Show More
@@ -1,391 +1,393 b'' | |||
|
1 | 1 | # hgweb/hgweb_mod.py - Web interface for a repository. |
|
2 | 2 | # |
|
3 | 3 | # Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net> |
|
4 | 4 | # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> |
|
5 | 5 | # |
|
6 | 6 | # This software may be used and distributed according to the terms of the |
|
7 | 7 | # GNU General Public License version 2 or any later version. |
|
8 | 8 | |
|
9 | 9 | import os, re |
|
10 | 10 | from mercurial import ui, hg, hook, error, encoding, templater, util, repoview |
|
11 | 11 | from mercurial.templatefilters import websub |
|
12 | 12 | from mercurial.i18n import _ |
|
13 | 13 | from common import get_stat, ErrorResponse, permhooks, caching |
|
14 | 14 | from common import HTTP_OK, HTTP_NOT_MODIFIED, HTTP_BAD_REQUEST |
|
15 | 15 | from common import HTTP_NOT_FOUND, HTTP_SERVER_ERROR |
|
16 | 16 | from request import wsgirequest |
|
17 | 17 | import webcommands, protocol, webutil |
|
18 | 18 | |
|
19 | 19 | perms = { |
|
20 | 20 | 'changegroup': 'pull', |
|
21 | 21 | 'changegroupsubset': 'pull', |
|
22 | 22 | 'getbundle': 'pull', |
|
23 | 23 | 'stream_out': 'pull', |
|
24 | 24 | 'listkeys': 'pull', |
|
25 | 25 | 'unbundle': 'push', |
|
26 | 26 | 'pushkey': 'push', |
|
27 | 27 | } |
|
28 | 28 | |
|
29 | 29 | def makebreadcrumb(url, prefix=''): |
|
30 | 30 | '''Return a 'URL breadcrumb' list |
|
31 | 31 | |
|
32 | 32 | A 'URL breadcrumb' is a list of URL-name pairs, |
|
33 | 33 | corresponding to each of the path items on a URL. |
|
34 | 34 | This can be used to create path navigation entries. |
|
35 | 35 | ''' |
|
36 | 36 | if url.endswith('/'): |
|
37 | 37 | url = url[:-1] |
|
38 | 38 | if prefix: |
|
39 | 39 | url = '/' + prefix + url |
|
40 | 40 | relpath = url |
|
41 | 41 | if relpath.startswith('/'): |
|
42 | 42 | relpath = relpath[1:] |
|
43 | 43 | |
|
44 | 44 | breadcrumb = [] |
|
45 | 45 | urlel = url |
|
46 | 46 | pathitems = [''] + relpath.split('/') |
|
47 | 47 | for pathel in reversed(pathitems): |
|
48 | 48 | if not pathel or not urlel: |
|
49 | 49 | break |
|
50 | 50 | breadcrumb.append({'url': urlel, 'name': pathel}) |
|
51 | 51 | urlel = os.path.dirname(urlel) |
|
52 | 52 | return reversed(breadcrumb) |
|
53 | 53 | |
|
54 | 54 | |
|
55 | 55 | class hgweb(object): |
|
56 | 56 | def __init__(self, repo, name=None, baseui=None): |
|
57 | 57 | if isinstance(repo, str): |
|
58 | 58 | if baseui: |
|
59 | 59 | u = baseui.copy() |
|
60 | 60 | else: |
|
61 | 61 | u = ui.ui() |
|
62 |
|
|
|
62 | r = hg.repository(u, repo) | |
|
63 | 63 | else: |
|
64 |
|
|
|
64 | r = repo | |
|
65 | 65 | |
|
66 |
|
|
|
67 |
|
|
|
68 |
|
|
|
69 |
|
|
|
70 |
|
|
|
66 | r = self._getview(r) | |
|
67 | r.ui.setconfig('ui', 'report_untrusted', 'off') | |
|
68 | r.baseui.setconfig('ui', 'report_untrusted', 'off') | |
|
69 | r.ui.setconfig('ui', 'nontty', 'true') | |
|
70 | r.baseui.setconfig('ui', 'nontty', 'true') | |
|
71 | self.repo = r | |
|
71 | 72 | hook.redirect(True) |
|
72 | 73 | self.mtime = -1 |
|
73 | 74 | self.size = -1 |
|
74 | 75 | self.reponame = name |
|
75 | 76 | self.archives = 'zip', 'gz', 'bz2' |
|
76 | 77 | self.stripecount = 1 |
|
77 | 78 | # a repo owner may set web.templates in .hg/hgrc to get any file |
|
78 | 79 | # readable by the user running the CGI script |
|
79 | 80 | self.templatepath = self.config('web', 'templates') |
|
80 | 81 | self.websubtable = self.loadwebsub() |
|
81 | 82 | |
|
82 | 83 | # The CGI scripts are often run by a user different from the repo owner. |
|
83 | 84 | # Trust the settings from the .hg/hgrc files by default. |
|
84 | 85 | def config(self, section, name, default=None, untrusted=True): |
|
85 | 86 | return self.repo.ui.config(section, name, default, |
|
86 | 87 | untrusted=untrusted) |
|
87 | 88 | |
|
88 | 89 | def configbool(self, section, name, default=False, untrusted=True): |
|
89 | 90 | return self.repo.ui.configbool(section, name, default, |
|
90 | 91 | untrusted=untrusted) |
|
91 | 92 | |
|
92 | 93 | def configlist(self, section, name, default=None, untrusted=True): |
|
93 | 94 | return self.repo.ui.configlist(section, name, default, |
|
94 | 95 | untrusted=untrusted) |
|
95 | 96 | |
|
96 | 97 | def _getview(self, repo): |
|
97 |
viewconfig = |
|
|
98 | viewconfig = repo.ui.config('web', 'view', 'served', | |
|
99 | untrusted=True) | |
|
98 | 100 | if viewconfig == 'all': |
|
99 | 101 | return repo.unfiltered() |
|
100 | 102 | elif viewconfig in repoview.filtertable: |
|
101 | 103 | return repo.filtered(viewconfig) |
|
102 | 104 | else: |
|
103 | 105 | return repo.filtered('served') |
|
104 | 106 | |
|
105 | 107 | def refresh(self, request=None): |
|
106 | 108 | st = get_stat(self.repo.spath) |
|
107 | 109 | # compare changelog size in addition to mtime to catch |
|
108 | 110 | # rollbacks made less than a second ago |
|
109 | 111 | if st.st_mtime != self.mtime or st.st_size != self.size: |
|
110 | 112 | self.mtime = st.st_mtime |
|
111 | 113 | self.size = st.st_size |
|
112 | 114 | r = hg.repository(self.repo.baseui, self.repo.root) |
|
113 | 115 | self.repo = self._getview(r) |
|
114 | 116 | self.maxchanges = int(self.config("web", "maxchanges", 10)) |
|
115 | 117 | self.stripecount = int(self.config("web", "stripes", 1)) |
|
116 | 118 | self.maxshortchanges = int(self.config("web", "maxshortchanges", |
|
117 | 119 | 60)) |
|
118 | 120 | self.maxfiles = int(self.config("web", "maxfiles", 10)) |
|
119 | 121 | self.allowpull = self.configbool("web", "allowpull", True) |
|
120 | 122 | encoding.encoding = self.config("web", "encoding", |
|
121 | 123 | encoding.encoding) |
|
122 | 124 | if request: |
|
123 | 125 | self.repo.ui.environ = request.env |
|
124 | 126 | |
|
125 | 127 | def run(self): |
|
126 | 128 | if not os.environ.get('GATEWAY_INTERFACE', '').startswith("CGI/1."): |
|
127 | 129 | raise RuntimeError("This function is only intended to be " |
|
128 | 130 | "called while running as a CGI script.") |
|
129 | 131 | import mercurial.hgweb.wsgicgi as wsgicgi |
|
130 | 132 | wsgicgi.launch(self) |
|
131 | 133 | |
|
132 | 134 | def __call__(self, env, respond): |
|
133 | 135 | req = wsgirequest(env, respond) |
|
134 | 136 | return self.run_wsgi(req) |
|
135 | 137 | |
|
136 | 138 | def run_wsgi(self, req): |
|
137 | 139 | |
|
138 | 140 | self.refresh(req) |
|
139 | 141 | |
|
140 | 142 | # work with CGI variables to create coherent structure |
|
141 | 143 | # use SCRIPT_NAME, PATH_INFO and QUERY_STRING as well as our REPO_NAME |
|
142 | 144 | |
|
143 | 145 | req.url = req.env['SCRIPT_NAME'] |
|
144 | 146 | if not req.url.endswith('/'): |
|
145 | 147 | req.url += '/' |
|
146 | 148 | if 'REPO_NAME' in req.env: |
|
147 | 149 | req.url += req.env['REPO_NAME'] + '/' |
|
148 | 150 | |
|
149 | 151 | if 'PATH_INFO' in req.env: |
|
150 | 152 | parts = req.env['PATH_INFO'].strip('/').split('/') |
|
151 | 153 | repo_parts = req.env.get('REPO_NAME', '').split('/') |
|
152 | 154 | if parts[:len(repo_parts)] == repo_parts: |
|
153 | 155 | parts = parts[len(repo_parts):] |
|
154 | 156 | query = '/'.join(parts) |
|
155 | 157 | else: |
|
156 | 158 | query = req.env['QUERY_STRING'].split('&', 1)[0] |
|
157 | 159 | query = query.split(';', 1)[0] |
|
158 | 160 | |
|
159 | 161 | # process this if it's a protocol request |
|
160 | 162 | # protocol bits don't need to create any URLs |
|
161 | 163 | # and the clients always use the old URL structure |
|
162 | 164 | |
|
163 | 165 | cmd = req.form.get('cmd', [''])[0] |
|
164 | 166 | if protocol.iscmd(cmd): |
|
165 | 167 | try: |
|
166 | 168 | if query: |
|
167 | 169 | raise ErrorResponse(HTTP_NOT_FOUND) |
|
168 | 170 | if cmd in perms: |
|
169 | 171 | self.check_perm(req, perms[cmd]) |
|
170 | 172 | return protocol.call(self.repo, req, cmd) |
|
171 | 173 | except ErrorResponse, inst: |
|
172 | 174 | # A client that sends unbundle without 100-continue will |
|
173 | 175 | # break if we respond early. |
|
174 | 176 | if (cmd == 'unbundle' and |
|
175 | 177 | (req.env.get('HTTP_EXPECT', |
|
176 | 178 | '').lower() != '100-continue') or |
|
177 | 179 | req.env.get('X-HgHttp2', '')): |
|
178 | 180 | req.drain() |
|
179 | 181 | else: |
|
180 | 182 | req.headers.append(('Connection', 'Close')) |
|
181 | 183 | req.respond(inst, protocol.HGTYPE, |
|
182 | 184 | body='0\n%s\n' % inst.message) |
|
183 | 185 | return '' |
|
184 | 186 | |
|
185 | 187 | # translate user-visible url structure to internal structure |
|
186 | 188 | |
|
187 | 189 | args = query.split('/', 2) |
|
188 | 190 | if 'cmd' not in req.form and args and args[0]: |
|
189 | 191 | |
|
190 | 192 | cmd = args.pop(0) |
|
191 | 193 | style = cmd.rfind('-') |
|
192 | 194 | if style != -1: |
|
193 | 195 | req.form['style'] = [cmd[:style]] |
|
194 | 196 | cmd = cmd[style + 1:] |
|
195 | 197 | |
|
196 | 198 | # avoid accepting e.g. style parameter as command |
|
197 | 199 | if util.safehasattr(webcommands, cmd): |
|
198 | 200 | req.form['cmd'] = [cmd] |
|
199 | 201 | else: |
|
200 | 202 | cmd = '' |
|
201 | 203 | |
|
202 | 204 | if cmd == 'static': |
|
203 | 205 | req.form['file'] = ['/'.join(args)] |
|
204 | 206 | else: |
|
205 | 207 | if args and args[0]: |
|
206 | 208 | node = args.pop(0) |
|
207 | 209 | req.form['node'] = [node] |
|
208 | 210 | if args: |
|
209 | 211 | req.form['file'] = args |
|
210 | 212 | |
|
211 | 213 | ua = req.env.get('HTTP_USER_AGENT', '') |
|
212 | 214 | if cmd == 'rev' and 'mercurial' in ua: |
|
213 | 215 | req.form['style'] = ['raw'] |
|
214 | 216 | |
|
215 | 217 | if cmd == 'archive': |
|
216 | 218 | fn = req.form['node'][0] |
|
217 | 219 | for type_, spec in self.archive_specs.iteritems(): |
|
218 | 220 | ext = spec[2] |
|
219 | 221 | if fn.endswith(ext): |
|
220 | 222 | req.form['node'] = [fn[:-len(ext)]] |
|
221 | 223 | req.form['type'] = [type_] |
|
222 | 224 | |
|
223 | 225 | # process the web interface request |
|
224 | 226 | |
|
225 | 227 | try: |
|
226 | 228 | tmpl = self.templater(req) |
|
227 | 229 | ctype = tmpl('mimetype', encoding=encoding.encoding) |
|
228 | 230 | ctype = templater.stringify(ctype) |
|
229 | 231 | |
|
230 | 232 | # check read permissions non-static content |
|
231 | 233 | if cmd != 'static': |
|
232 | 234 | self.check_perm(req, None) |
|
233 | 235 | |
|
234 | 236 | if cmd == '': |
|
235 | 237 | req.form['cmd'] = [tmpl.cache['default']] |
|
236 | 238 | cmd = req.form['cmd'][0] |
|
237 | 239 | |
|
238 | 240 | if self.configbool('web', 'cache', True): |
|
239 | 241 | caching(self, req) # sets ETag header or raises NOT_MODIFIED |
|
240 | 242 | if cmd not in webcommands.__all__: |
|
241 | 243 | msg = 'no such method: %s' % cmd |
|
242 | 244 | raise ErrorResponse(HTTP_BAD_REQUEST, msg) |
|
243 | 245 | elif cmd == 'file' and 'raw' in req.form.get('style', []): |
|
244 | 246 | self.ctype = ctype |
|
245 | 247 | content = webcommands.rawfile(self, req, tmpl) |
|
246 | 248 | else: |
|
247 | 249 | content = getattr(webcommands, cmd)(self, req, tmpl) |
|
248 | 250 | req.respond(HTTP_OK, ctype) |
|
249 | 251 | |
|
250 | 252 | return content |
|
251 | 253 | |
|
252 | 254 | except (error.LookupError, error.RepoLookupError), err: |
|
253 | 255 | req.respond(HTTP_NOT_FOUND, ctype) |
|
254 | 256 | msg = str(err) |
|
255 | 257 | if (util.safehasattr(err, 'name') and |
|
256 | 258 | not isinstance(err, error.ManifestLookupError)): |
|
257 | 259 | msg = 'revision not found: %s' % err.name |
|
258 | 260 | return tmpl('error', error=msg) |
|
259 | 261 | except (error.RepoError, error.RevlogError), inst: |
|
260 | 262 | req.respond(HTTP_SERVER_ERROR, ctype) |
|
261 | 263 | return tmpl('error', error=str(inst)) |
|
262 | 264 | except ErrorResponse, inst: |
|
263 | 265 | req.respond(inst, ctype) |
|
264 | 266 | if inst.code == HTTP_NOT_MODIFIED: |
|
265 | 267 | # Not allowed to return a body on a 304 |
|
266 | 268 | return [''] |
|
267 | 269 | return tmpl('error', error=inst.message) |
|
268 | 270 | |
|
269 | 271 | def loadwebsub(self): |
|
270 | 272 | websubtable = [] |
|
271 | 273 | websubdefs = self.repo.ui.configitems('websub') |
|
272 | 274 | # we must maintain interhg backwards compatibility |
|
273 | 275 | websubdefs += self.repo.ui.configitems('interhg') |
|
274 | 276 | for key, pattern in websubdefs: |
|
275 | 277 | # grab the delimiter from the character after the "s" |
|
276 | 278 | unesc = pattern[1] |
|
277 | 279 | delim = re.escape(unesc) |
|
278 | 280 | |
|
279 | 281 | # identify portions of the pattern, taking care to avoid escaped |
|
280 | 282 | # delimiters. the replace format and flags are optional, but |
|
281 | 283 | # delimiters are required. |
|
282 | 284 | match = re.match( |
|
283 | 285 | r'^s%s(.+)(?:(?<=\\\\)|(?<!\\))%s(.*)%s([ilmsux])*$' |
|
284 | 286 | % (delim, delim, delim), pattern) |
|
285 | 287 | if not match: |
|
286 | 288 | self.repo.ui.warn(_("websub: invalid pattern for %s: %s\n") |
|
287 | 289 | % (key, pattern)) |
|
288 | 290 | continue |
|
289 | 291 | |
|
290 | 292 | # we need to unescape the delimiter for regexp and format |
|
291 | 293 | delim_re = re.compile(r'(?<!\\)\\%s' % delim) |
|
292 | 294 | regexp = delim_re.sub(unesc, match.group(1)) |
|
293 | 295 | format = delim_re.sub(unesc, match.group(2)) |
|
294 | 296 | |
|
295 | 297 | # the pattern allows for 6 regexp flags, so set them if necessary |
|
296 | 298 | flagin = match.group(3) |
|
297 | 299 | flags = 0 |
|
298 | 300 | if flagin: |
|
299 | 301 | for flag in flagin.upper(): |
|
300 | 302 | flags |= re.__dict__[flag] |
|
301 | 303 | |
|
302 | 304 | try: |
|
303 | 305 | regexp = re.compile(regexp, flags) |
|
304 | 306 | websubtable.append((regexp, format)) |
|
305 | 307 | except re.error: |
|
306 | 308 | self.repo.ui.warn(_("websub: invalid regexp for %s: %s\n") |
|
307 | 309 | % (key, regexp)) |
|
308 | 310 | return websubtable |
|
309 | 311 | |
|
310 | 312 | def templater(self, req): |
|
311 | 313 | |
|
312 | 314 | # determine scheme, port and server name |
|
313 | 315 | # this is needed to create absolute urls |
|
314 | 316 | |
|
315 | 317 | proto = req.env.get('wsgi.url_scheme') |
|
316 | 318 | if proto == 'https': |
|
317 | 319 | proto = 'https' |
|
318 | 320 | default_port = "443" |
|
319 | 321 | else: |
|
320 | 322 | proto = 'http' |
|
321 | 323 | default_port = "80" |
|
322 | 324 | |
|
323 | 325 | port = req.env["SERVER_PORT"] |
|
324 | 326 | port = port != default_port and (":" + port) or "" |
|
325 | 327 | urlbase = '%s://%s%s' % (proto, req.env['SERVER_NAME'], port) |
|
326 | 328 | logourl = self.config("web", "logourl", "http://mercurial.selenic.com/") |
|
327 | 329 | logoimg = self.config("web", "logoimg", "hglogo.png") |
|
328 | 330 | staticurl = self.config("web", "staticurl") or req.url + 'static/' |
|
329 | 331 | if not staticurl.endswith('/'): |
|
330 | 332 | staticurl += '/' |
|
331 | 333 | |
|
332 | 334 | # some functions for the templater |
|
333 | 335 | |
|
334 | 336 | def motd(**map): |
|
335 | 337 | yield self.config("web", "motd", "") |
|
336 | 338 | |
|
337 | 339 | # figure out which style to use |
|
338 | 340 | |
|
339 | 341 | vars = {} |
|
340 | 342 | styles = ( |
|
341 | 343 | req.form.get('style', [None])[0], |
|
342 | 344 | self.config('web', 'style'), |
|
343 | 345 | 'paper', |
|
344 | 346 | ) |
|
345 | 347 | style, mapfile = templater.stylemap(styles, self.templatepath) |
|
346 | 348 | if style == styles[0]: |
|
347 | 349 | vars['style'] = style |
|
348 | 350 | |
|
349 | 351 | start = req.url[-1] == '?' and '&' or '?' |
|
350 | 352 | sessionvars = webutil.sessionvars(vars, start) |
|
351 | 353 | |
|
352 | 354 | if not self.reponame: |
|
353 | 355 | self.reponame = (self.config("web", "name") |
|
354 | 356 | or req.env.get('REPO_NAME') |
|
355 | 357 | or req.url.strip('/') or self.repo.root) |
|
356 | 358 | |
|
357 | 359 | def websubfilter(text): |
|
358 | 360 | return websub(text, self.websubtable) |
|
359 | 361 | |
|
360 | 362 | # create the templater |
|
361 | 363 | |
|
362 | 364 | tmpl = templater.templater(mapfile, |
|
363 | 365 | filters={"websub": websubfilter}, |
|
364 | 366 | defaults={"url": req.url, |
|
365 | 367 | "logourl": logourl, |
|
366 | 368 | "logoimg": logoimg, |
|
367 | 369 | "staticurl": staticurl, |
|
368 | 370 | "urlbase": urlbase, |
|
369 | 371 | "repo": self.reponame, |
|
370 | 372 | "encoding": encoding.encoding, |
|
371 | 373 | "motd": motd, |
|
372 | 374 | "sessionvars": sessionvars, |
|
373 | 375 | "pathdef": makebreadcrumb(req.url), |
|
374 | 376 | }) |
|
375 | 377 | return tmpl |
|
376 | 378 | |
|
377 | 379 | def archivelist(self, nodeid): |
|
378 | 380 | allowed = self.configlist("web", "allow_archive") |
|
379 | 381 | for i, spec in self.archive_specs.iteritems(): |
|
380 | 382 | if i in allowed or self.configbool("web", "allow" + i): |
|
381 | 383 | yield {"type" : i, "extension" : spec[2], "node" : nodeid} |
|
382 | 384 | |
|
383 | 385 | archive_specs = { |
|
384 | 386 | 'bz2': ('application/x-bzip2', 'tbz2', '.tar.bz2', None), |
|
385 | 387 | 'gz': ('application/x-gzip', 'tgz', '.tar.gz', None), |
|
386 | 388 | 'zip': ('application/zip', 'zip', '.zip', None), |
|
387 | 389 | } |
|
388 | 390 | |
|
389 | 391 | def check_perm(self, req, op): |
|
390 | 392 | for hook in permhooks: |
|
391 | 393 | hook(self, req, op) |
@@ -1,429 +1,420 b'' | |||
|
1 | 1 | /* |
|
2 | 2 | mpatch.c - efficient binary patching for Mercurial |
|
3 | 3 | |
|
4 | 4 | This implements a patch algorithm that's O(m + nlog n) where m is the |
|
5 | 5 | size of the output and n is the number of patches. |
|
6 | 6 | |
|
7 | 7 | Given a list of binary patches, it unpacks each into a hunk list, |
|
8 | 8 | then combines the hunk lists with a treewise recursion to form a |
|
9 | 9 | single hunk list. This hunk list is then applied to the original |
|
10 | 10 | text. |
|
11 | 11 | |
|
12 | 12 | The text (or binary) fragments are copied directly from their source |
|
13 | 13 | Python objects into a preallocated output string to avoid the |
|
14 | 14 | allocation of intermediate Python objects. Working memory is about 2x |
|
15 | 15 | the total number of hunks. |
|
16 | 16 | |
|
17 | 17 | Copyright 2005, 2006 Matt Mackall <mpm@selenic.com> |
|
18 | 18 | |
|
19 | 19 | This software may be used and distributed according to the terms |
|
20 | 20 | of the GNU General Public License, incorporated herein by reference. |
|
21 | 21 | */ |
|
22 | 22 | |
|
23 | 23 | #define PY_SSIZE_T_CLEAN |
|
24 | 24 | #include <Python.h> |
|
25 | 25 | #include <stdlib.h> |
|
26 | 26 | #include <string.h> |
|
27 | 27 | |
|
28 | 28 | #include "util.h" |
|
29 | 29 | |
|
30 | 30 | static char mpatch_doc[] = "Efficient binary patching."; |
|
31 | 31 | static PyObject *mpatch_Error; |
|
32 | 32 | |
|
33 | 33 | struct frag { |
|
34 | 34 | int start, end, len; |
|
35 | 35 | const char *data; |
|
36 | 36 | }; |
|
37 | 37 | |
|
38 | 38 | struct flist { |
|
39 | 39 | struct frag *base, *head, *tail; |
|
40 | 40 | }; |
|
41 | 41 | |
|
42 | 42 | static struct flist *lalloc(Py_ssize_t size) |
|
43 | 43 | { |
|
44 | 44 | struct flist *a = NULL; |
|
45 | 45 | |
|
46 | 46 | if (size < 1) |
|
47 | 47 | size = 1; |
|
48 | 48 | |
|
49 | 49 | a = (struct flist *)malloc(sizeof(struct flist)); |
|
50 | 50 | if (a) { |
|
51 | 51 | a->base = (struct frag *)malloc(sizeof(struct frag) * size); |
|
52 | 52 | if (a->base) { |
|
53 | 53 | a->head = a->tail = a->base; |
|
54 | 54 | return a; |
|
55 | 55 | } |
|
56 | 56 | free(a); |
|
57 | 57 | a = NULL; |
|
58 | 58 | } |
|
59 | 59 | if (!PyErr_Occurred()) |
|
60 | 60 | PyErr_NoMemory(); |
|
61 | 61 | return NULL; |
|
62 | 62 | } |
|
63 | 63 | |
|
64 | 64 | static void lfree(struct flist *a) |
|
65 | 65 | { |
|
66 | 66 | if (a) { |
|
67 | 67 | free(a->base); |
|
68 | 68 | free(a); |
|
69 | 69 | } |
|
70 | 70 | } |
|
71 | 71 | |
|
72 | 72 | static Py_ssize_t lsize(struct flist *a) |
|
73 | 73 | { |
|
74 | 74 | return a->tail - a->head; |
|
75 | 75 | } |
|
76 | 76 | |
|
77 | 77 | /* move hunks in source that are less cut to dest, compensating |
|
78 | 78 | for changes in offset. the last hunk may be split if necessary. |
|
79 | 79 | */ |
|
80 | 80 | static int gather(struct flist *dest, struct flist *src, int cut, int offset) |
|
81 | 81 | { |
|
82 | 82 | struct frag *d = dest->tail, *s = src->head; |
|
83 | 83 | int postend, c, l; |
|
84 | 84 | |
|
85 | 85 | while (s != src->tail) { |
|
86 | 86 | if (s->start + offset >= cut) |
|
87 | 87 | break; /* we've gone far enough */ |
|
88 | 88 | |
|
89 | 89 | postend = offset + s->start + s->len; |
|
90 | 90 | if (postend <= cut) { |
|
91 | 91 | /* save this hunk */ |
|
92 | 92 | offset += s->start + s->len - s->end; |
|
93 | 93 | *d++ = *s++; |
|
94 | 94 | } |
|
95 | 95 | else { |
|
96 | 96 | /* break up this hunk */ |
|
97 | 97 | c = cut - offset; |
|
98 | 98 | if (s->end < c) |
|
99 | 99 | c = s->end; |
|
100 | 100 | l = cut - offset - s->start; |
|
101 | 101 | if (s->len < l) |
|
102 | 102 | l = s->len; |
|
103 | 103 | |
|
104 | 104 | offset += s->start + l - c; |
|
105 | 105 | |
|
106 | 106 | d->start = s->start; |
|
107 | 107 | d->end = c; |
|
108 | 108 | d->len = l; |
|
109 | 109 | d->data = s->data; |
|
110 | 110 | d++; |
|
111 | 111 | s->start = c; |
|
112 | 112 | s->len = s->len - l; |
|
113 | 113 | s->data = s->data + l; |
|
114 | 114 | |
|
115 | 115 | break; |
|
116 | 116 | } |
|
117 | 117 | } |
|
118 | 118 | |
|
119 | 119 | dest->tail = d; |
|
120 | 120 | src->head = s; |
|
121 | 121 | return offset; |
|
122 | 122 | } |
|
123 | 123 | |
|
124 | 124 | /* like gather, but with no output list */ |
|
125 | 125 | static int discard(struct flist *src, int cut, int offset) |
|
126 | 126 | { |
|
127 | 127 | struct frag *s = src->head; |
|
128 | 128 | int postend, c, l; |
|
129 | 129 | |
|
130 | 130 | while (s != src->tail) { |
|
131 | 131 | if (s->start + offset >= cut) |
|
132 | 132 | break; |
|
133 | 133 | |
|
134 | 134 | postend = offset + s->start + s->len; |
|
135 | 135 | if (postend <= cut) { |
|
136 | 136 | offset += s->start + s->len - s->end; |
|
137 | 137 | s++; |
|
138 | 138 | } |
|
139 | 139 | else { |
|
140 | 140 | c = cut - offset; |
|
141 | 141 | if (s->end < c) |
|
142 | 142 | c = s->end; |
|
143 | 143 | l = cut - offset - s->start; |
|
144 | 144 | if (s->len < l) |
|
145 | 145 | l = s->len; |
|
146 | 146 | |
|
147 | 147 | offset += s->start + l - c; |
|
148 | 148 | s->start = c; |
|
149 | 149 | s->len = s->len - l; |
|
150 | 150 | s->data = s->data + l; |
|
151 | 151 | |
|
152 | 152 | break; |
|
153 | 153 | } |
|
154 | 154 | } |
|
155 | 155 | |
|
156 | 156 | src->head = s; |
|
157 | 157 | return offset; |
|
158 | 158 | } |
|
159 | 159 | |
|
160 | 160 | /* combine hunk lists a and b, while adjusting b for offset changes in a/ |
|
161 | 161 | this deletes a and b and returns the resultant list. */ |
|
162 | 162 | static struct flist *combine(struct flist *a, struct flist *b) |
|
163 | 163 | { |
|
164 | 164 | struct flist *c = NULL; |
|
165 | 165 | struct frag *bh, *ct; |
|
166 | 166 | int offset = 0, post; |
|
167 | 167 | |
|
168 | 168 | if (a && b) |
|
169 | 169 | c = lalloc((lsize(a) + lsize(b)) * 2); |
|
170 | 170 | |
|
171 | 171 | if (c) { |
|
172 | 172 | |
|
173 | 173 | for (bh = b->head; bh != b->tail; bh++) { |
|
174 | 174 | /* save old hunks */ |
|
175 | 175 | offset = gather(c, a, bh->start, offset); |
|
176 | 176 | |
|
177 | 177 | /* discard replaced hunks */ |
|
178 | 178 | post = discard(a, bh->end, offset); |
|
179 | 179 | |
|
180 | 180 | /* insert new hunk */ |
|
181 | 181 | ct = c->tail; |
|
182 | 182 | ct->start = bh->start - offset; |
|
183 | 183 | ct->end = bh->end - post; |
|
184 | 184 | ct->len = bh->len; |
|
185 | 185 | ct->data = bh->data; |
|
186 | 186 | c->tail++; |
|
187 | 187 | offset = post; |
|
188 | 188 | } |
|
189 | 189 | |
|
190 | 190 | /* hold on to tail from a */ |
|
191 | 191 | memcpy(c->tail, a->head, sizeof(struct frag) * lsize(a)); |
|
192 | 192 | c->tail += lsize(a); |
|
193 | 193 | } |
|
194 | 194 | |
|
195 | 195 | lfree(a); |
|
196 | 196 | lfree(b); |
|
197 | 197 | return c; |
|
198 | 198 | } |
|
199 | 199 | |
|
200 | 200 | /* decode a binary patch into a hunk list */ |
|
201 | 201 | static struct flist *decode(const char *bin, Py_ssize_t len) |
|
202 | 202 | { |
|
203 | 203 | struct flist *l; |
|
204 | 204 | struct frag *lt; |
|
205 | const char *data = bin + 12, *end = bin + len; | |
|
205 | int pos = 0; | |
|
206 | 206 | |
|
207 | 207 | /* assume worst case size, we won't have many of these lists */ |
|
208 | 208 | l = lalloc(len / 12); |
|
209 | 209 | if (!l) |
|
210 | 210 | return NULL; |
|
211 | 211 | |
|
212 | 212 | lt = l->tail; |
|
213 | 213 | |
|
214 | while (data <= end) { | |
|
215 | lt->start = getbe32(bin); | |
|
216 | lt->end = getbe32(bin + 4); | |
|
217 | lt->len = getbe32(bin + 8); | |
|
214 | while (pos >= 0 && pos < len) { | |
|
215 | lt->start = getbe32(bin + pos); | |
|
216 | lt->end = getbe32(bin + pos + 4); | |
|
217 | lt->len = getbe32(bin + pos + 8); | |
|
218 | 218 | if (lt->start > lt->end) |
|
219 | 219 | break; /* sanity check */ |
|
220 | bin = data + lt->len; | |
|
221 | if (bin < data) | |
|
222 | break; /* big data + big (bogus) len can wrap around */ | |
|
223 | lt->data = data; | |
|
224 | data = bin + 12; | |
|
220 | lt->data = bin + pos + 12; | |
|
221 | pos += 12 + lt->len; | |
|
225 | 222 | lt++; |
|
226 | 223 | } |
|
227 | 224 | |
|
228 |
if ( |
|
|
225 | if (pos != len) { | |
|
229 | 226 | if (!PyErr_Occurred()) |
|
230 | 227 | PyErr_SetString(mpatch_Error, "patch cannot be decoded"); |
|
231 | 228 | lfree(l); |
|
232 | 229 | return NULL; |
|
233 | 230 | } |
|
234 | 231 | |
|
235 | 232 | l->tail = lt; |
|
236 | 233 | return l; |
|
237 | 234 | } |
|
238 | 235 | |
|
239 | 236 | /* calculate the size of resultant text */ |
|
240 | 237 | static Py_ssize_t calcsize(Py_ssize_t len, struct flist *l) |
|
241 | 238 | { |
|
242 | 239 | Py_ssize_t outlen = 0, last = 0; |
|
243 | 240 | struct frag *f = l->head; |
|
244 | 241 | |
|
245 | 242 | while (f != l->tail) { |
|
246 | 243 | if (f->start < last || f->end > len) { |
|
247 | 244 | if (!PyErr_Occurred()) |
|
248 | 245 | PyErr_SetString(mpatch_Error, |
|
249 | 246 | "invalid patch"); |
|
250 | 247 | return -1; |
|
251 | 248 | } |
|
252 | 249 | outlen += f->start - last; |
|
253 | 250 | last = f->end; |
|
254 | 251 | outlen += f->len; |
|
255 | 252 | f++; |
|
256 | 253 | } |
|
257 | 254 | |
|
258 | 255 | outlen += len - last; |
|
259 | 256 | return outlen; |
|
260 | 257 | } |
|
261 | 258 | |
|
262 | 259 | static int apply(char *buf, const char *orig, Py_ssize_t len, struct flist *l) |
|
263 | 260 | { |
|
264 | 261 | struct frag *f = l->head; |
|
265 | 262 | int last = 0; |
|
266 | 263 | char *p = buf; |
|
267 | 264 | |
|
268 | 265 | while (f != l->tail) { |
|
269 | 266 | if (f->start < last || f->end > len) { |
|
270 | 267 | if (!PyErr_Occurred()) |
|
271 | 268 | PyErr_SetString(mpatch_Error, |
|
272 | 269 | "invalid patch"); |
|
273 | 270 | return 0; |
|
274 | 271 | } |
|
275 | 272 | memcpy(p, orig + last, f->start - last); |
|
276 | 273 | p += f->start - last; |
|
277 | 274 | memcpy(p, f->data, f->len); |
|
278 | 275 | last = f->end; |
|
279 | 276 | p += f->len; |
|
280 | 277 | f++; |
|
281 | 278 | } |
|
282 | 279 | memcpy(p, orig + last, len - last); |
|
283 | 280 | return 1; |
|
284 | 281 | } |
|
285 | 282 | |
|
286 | 283 | /* recursively generate a patch of all bins between start and end */ |
|
287 | 284 | static struct flist *fold(PyObject *bins, Py_ssize_t start, Py_ssize_t end) |
|
288 | 285 | { |
|
289 | 286 | Py_ssize_t len, blen; |
|
290 | 287 | const char *buffer; |
|
291 | 288 | |
|
292 | 289 | if (start + 1 == end) { |
|
293 | 290 | /* trivial case, output a decoded list */ |
|
294 | 291 | PyObject *tmp = PyList_GetItem(bins, start); |
|
295 | 292 | if (!tmp) |
|
296 | 293 | return NULL; |
|
297 | 294 | if (PyObject_AsCharBuffer(tmp, &buffer, &blen)) |
|
298 | 295 | return NULL; |
|
299 | 296 | return decode(buffer, blen); |
|
300 | 297 | } |
|
301 | 298 | |
|
302 | 299 | /* divide and conquer, memory management is elsewhere */ |
|
303 | 300 | len = (end - start) / 2; |
|
304 | 301 | return combine(fold(bins, start, start + len), |
|
305 | 302 | fold(bins, start + len, end)); |
|
306 | 303 | } |
|
307 | 304 | |
|
308 | 305 | static PyObject * |
|
309 | 306 | patches(PyObject *self, PyObject *args) |
|
310 | 307 | { |
|
311 | 308 | PyObject *text, *bins, *result; |
|
312 | 309 | struct flist *patch; |
|
313 | 310 | const char *in; |
|
314 | 311 | char *out; |
|
315 | 312 | Py_ssize_t len, outlen, inlen; |
|
316 | 313 | |
|
317 | 314 | if (!PyArg_ParseTuple(args, "OO:mpatch", &text, &bins)) |
|
318 | 315 | return NULL; |
|
319 | 316 | |
|
320 | 317 | len = PyList_Size(bins); |
|
321 | 318 | if (!len) { |
|
322 | 319 | /* nothing to do */ |
|
323 | 320 | Py_INCREF(text); |
|
324 | 321 | return text; |
|
325 | 322 | } |
|
326 | 323 | |
|
327 | 324 | if (PyObject_AsCharBuffer(text, &in, &inlen)) |
|
328 | 325 | return NULL; |
|
329 | 326 | |
|
330 | 327 | patch = fold(bins, 0, len); |
|
331 | 328 | if (!patch) |
|
332 | 329 | return NULL; |
|
333 | 330 | |
|
334 | 331 | outlen = calcsize(inlen, patch); |
|
335 | 332 | if (outlen < 0) { |
|
336 | 333 | result = NULL; |
|
337 | 334 | goto cleanup; |
|
338 | 335 | } |
|
339 | 336 | result = PyBytes_FromStringAndSize(NULL, outlen); |
|
340 | 337 | if (!result) { |
|
341 | 338 | result = NULL; |
|
342 | 339 | goto cleanup; |
|
343 | 340 | } |
|
344 | 341 | out = PyBytes_AsString(result); |
|
345 | 342 | if (!apply(out, in, inlen, patch)) { |
|
346 | 343 | Py_DECREF(result); |
|
347 | 344 | result = NULL; |
|
348 | 345 | } |
|
349 | 346 | cleanup: |
|
350 | 347 | lfree(patch); |
|
351 | 348 | return result; |
|
352 | 349 | } |
|
353 | 350 | |
|
354 | 351 | /* calculate size of a patched file directly */ |
|
355 | 352 | static PyObject * |
|
356 | 353 | patchedsize(PyObject *self, PyObject *args) |
|
357 | 354 | { |
|
358 | long orig, start, end, len, outlen = 0, last = 0; | |
|
355 | long orig, start, end, len, outlen = 0, last = 0, pos = 0; | |
|
359 | 356 | Py_ssize_t patchlen; |
|
360 | char *bin, *binend, *data; | |
|
357 | char *bin; | |
|
361 | 358 | |
|
362 | 359 | if (!PyArg_ParseTuple(args, "ls#", &orig, &bin, &patchlen)) |
|
363 | 360 | return NULL; |
|
364 | 361 | |
|
365 | binend = bin + patchlen; | |
|
366 | data = bin + 12; | |
|
367 | ||
|
368 | while (data <= binend) { | |
|
369 | start = getbe32(bin); | |
|
370 | end = getbe32(bin + 4); | |
|
371 | len = getbe32(bin + 8); | |
|
362 | while (pos >= 0 && pos < patchlen) { | |
|
363 | start = getbe32(bin + pos); | |
|
364 | end = getbe32(bin + pos + 4); | |
|
365 | len = getbe32(bin + pos + 8); | |
|
372 | 366 | if (start > end) |
|
373 | 367 | break; /* sanity check */ |
|
374 |
|
|
|
375 | if (bin < data) | |
|
376 | break; /* big data + big (bogus) len can wrap around */ | |
|
377 | data = bin + 12; | |
|
368 | pos += 12 + len; | |
|
378 | 369 | outlen += start - last; |
|
379 | 370 | last = end; |
|
380 | 371 | outlen += len; |
|
381 | 372 | } |
|
382 | 373 | |
|
383 |
if ( |
|
|
374 | if (pos != patchlen) { | |
|
384 | 375 | if (!PyErr_Occurred()) |
|
385 | 376 | PyErr_SetString(mpatch_Error, "patch cannot be decoded"); |
|
386 | 377 | return NULL; |
|
387 | 378 | } |
|
388 | 379 | |
|
389 | 380 | outlen += orig - last; |
|
390 | 381 | return Py_BuildValue("l", outlen); |
|
391 | 382 | } |
|
392 | 383 | |
|
393 | 384 | static PyMethodDef methods[] = { |
|
394 | 385 | {"patches", patches, METH_VARARGS, "apply a series of patches\n"}, |
|
395 | 386 | {"patchedsize", patchedsize, METH_VARARGS, "calculed patched size\n"}, |
|
396 | 387 | {NULL, NULL} |
|
397 | 388 | }; |
|
398 | 389 | |
|
399 | 390 | #ifdef IS_PY3K |
|
400 | 391 | static struct PyModuleDef mpatch_module = { |
|
401 | 392 | PyModuleDef_HEAD_INIT, |
|
402 | 393 | "mpatch", |
|
403 | 394 | mpatch_doc, |
|
404 | 395 | -1, |
|
405 | 396 | methods |
|
406 | 397 | }; |
|
407 | 398 | |
|
408 | 399 | PyMODINIT_FUNC PyInit_mpatch(void) |
|
409 | 400 | { |
|
410 | 401 | PyObject *m; |
|
411 | 402 | |
|
412 | 403 | m = PyModule_Create(&mpatch_module); |
|
413 | 404 | if (m == NULL) |
|
414 | 405 | return NULL; |
|
415 | 406 | |
|
416 | 407 | mpatch_Error = PyErr_NewException("mpatch.mpatchError", NULL, NULL); |
|
417 | 408 | Py_INCREF(mpatch_Error); |
|
418 | 409 | PyModule_AddObject(m, "mpatchError", mpatch_Error); |
|
419 | 410 | |
|
420 | 411 | return m; |
|
421 | 412 | } |
|
422 | 413 | #else |
|
423 | 414 | PyMODINIT_FUNC |
|
424 | 415 | initmpatch(void) |
|
425 | 416 | { |
|
426 | 417 | Py_InitModule3("mpatch", methods, mpatch_doc); |
|
427 | 418 | mpatch_Error = PyErr_NewException("mpatch.mpatchError", NULL, NULL); |
|
428 | 419 | } |
|
429 | 420 | #endif |
@@ -1,1965 +1,1959 b'' | |||
|
1 | 1 | /* |
|
2 | 2 | parsers.c - efficient content parsing |
|
3 | 3 | |
|
4 | 4 | Copyright 2008 Matt Mackall <mpm@selenic.com> and others |
|
5 | 5 | |
|
6 | 6 | This software may be used and distributed according to the terms of |
|
7 | 7 | the GNU General Public License, incorporated herein by reference. |
|
8 | 8 | */ |
|
9 | 9 | |
|
10 | 10 | #include <Python.h> |
|
11 | 11 | #include <ctype.h> |
|
12 | 12 | #include <stddef.h> |
|
13 | 13 | #include <string.h> |
|
14 | 14 | |
|
15 | 15 | #include "util.h" |
|
16 | 16 | |
|
17 | 17 | static int8_t hextable[256] = { |
|
18 | 18 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
|
19 | 19 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
|
20 | 20 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
|
21 | 21 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1, /* 0-9 */ |
|
22 | 22 | -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* A-F */ |
|
23 | 23 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
|
24 | 24 | -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* a-f */ |
|
25 | 25 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
|
26 | 26 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
|
27 | 27 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
|
28 | 28 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
|
29 | 29 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
|
30 | 30 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
|
31 | 31 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
|
32 | 32 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
|
33 | 33 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 |
|
34 | 34 | }; |
|
35 | 35 | |
|
36 | 36 | static inline int hexdigit(const char *p, Py_ssize_t off) |
|
37 | 37 | { |
|
38 | 38 | int8_t val = hextable[(unsigned char)p[off]]; |
|
39 | 39 | |
|
40 | 40 | if (val >= 0) { |
|
41 | 41 | return val; |
|
42 | 42 | } |
|
43 | 43 | |
|
44 | 44 | PyErr_SetString(PyExc_ValueError, "input contains non-hex character"); |
|
45 | 45 | return 0; |
|
46 | 46 | } |
|
47 | 47 | |
|
48 | 48 | /* |
|
49 | 49 | * Turn a hex-encoded string into binary. |
|
50 | 50 | */ |
|
51 | 51 | static PyObject *unhexlify(const char *str, int len) |
|
52 | 52 | { |
|
53 | 53 | PyObject *ret; |
|
54 | 54 | char *d; |
|
55 | 55 | int i; |
|
56 | 56 | |
|
57 | 57 | ret = PyBytes_FromStringAndSize(NULL, len / 2); |
|
58 | 58 | |
|
59 | 59 | if (!ret) |
|
60 | 60 | return NULL; |
|
61 | 61 | |
|
62 | 62 | d = PyBytes_AsString(ret); |
|
63 | 63 | |
|
64 | 64 | for (i = 0; i < len;) { |
|
65 | 65 | int hi = hexdigit(str, i++); |
|
66 | 66 | int lo = hexdigit(str, i++); |
|
67 | 67 | *d++ = (hi << 4) | lo; |
|
68 | 68 | } |
|
69 | 69 | |
|
70 | 70 | return ret; |
|
71 | 71 | } |
|
72 | 72 | |
|
73 | 73 | /* |
|
74 | 74 | * This code assumes that a manifest is stitched together with newline |
|
75 | 75 | * ('\n') characters. |
|
76 | 76 | */ |
|
77 | 77 | static PyObject *parse_manifest(PyObject *self, PyObject *args) |
|
78 | 78 | { |
|
79 | 79 | PyObject *mfdict, *fdict; |
|
80 | 80 | char *str, *start, *end; |
|
81 | 81 | int len; |
|
82 | 82 | |
|
83 | 83 | if (!PyArg_ParseTuple(args, "O!O!s#:parse_manifest", |
|
84 | 84 | &PyDict_Type, &mfdict, |
|
85 | 85 | &PyDict_Type, &fdict, |
|
86 | 86 | &str, &len)) |
|
87 | 87 | goto quit; |
|
88 | 88 | |
|
89 | 89 | start = str; |
|
90 | 90 | end = str + len; |
|
91 | 91 | while (start < end) { |
|
92 | 92 | PyObject *file = NULL, *node = NULL; |
|
93 | 93 | PyObject *flags = NULL; |
|
94 | 94 | char *zero = NULL, *newline = NULL; |
|
95 | 95 | ptrdiff_t nlen; |
|
96 | 96 | |
|
97 | 97 | zero = memchr(start, '\0', end - start); |
|
98 | 98 | if (!zero) { |
|
99 | 99 | PyErr_SetString(PyExc_ValueError, |
|
100 | 100 | "manifest entry has no separator"); |
|
101 | 101 | goto quit; |
|
102 | 102 | } |
|
103 | 103 | |
|
104 | 104 | newline = memchr(zero + 1, '\n', end - (zero + 1)); |
|
105 | 105 | if (!newline) { |
|
106 | 106 | PyErr_SetString(PyExc_ValueError, |
|
107 | 107 | "manifest contains trailing garbage"); |
|
108 | 108 | goto quit; |
|
109 | 109 | } |
|
110 | 110 | |
|
111 | 111 | file = PyBytes_FromStringAndSize(start, zero - start); |
|
112 | 112 | |
|
113 | 113 | if (!file) |
|
114 | 114 | goto bail; |
|
115 | 115 | |
|
116 | 116 | nlen = newline - zero - 1; |
|
117 | 117 | |
|
118 | 118 | node = unhexlify(zero + 1, nlen > 40 ? 40 : (int)nlen); |
|
119 | 119 | if (!node) |
|
120 | 120 | goto bail; |
|
121 | 121 | |
|
122 | 122 | if (nlen > 40) { |
|
123 | 123 | flags = PyBytes_FromStringAndSize(zero + 41, |
|
124 | 124 | nlen - 40); |
|
125 | 125 | if (!flags) |
|
126 | 126 | goto bail; |
|
127 | 127 | |
|
128 | 128 | if (PyDict_SetItem(fdict, file, flags) == -1) |
|
129 | 129 | goto bail; |
|
130 | 130 | } |
|
131 | 131 | |
|
132 | 132 | if (PyDict_SetItem(mfdict, file, node) == -1) |
|
133 | 133 | goto bail; |
|
134 | 134 | |
|
135 | 135 | start = newline + 1; |
|
136 | 136 | |
|
137 | 137 | Py_XDECREF(flags); |
|
138 | 138 | Py_XDECREF(node); |
|
139 | 139 | Py_XDECREF(file); |
|
140 | 140 | continue; |
|
141 | 141 | bail: |
|
142 | 142 | Py_XDECREF(flags); |
|
143 | 143 | Py_XDECREF(node); |
|
144 | 144 | Py_XDECREF(file); |
|
145 | 145 | goto quit; |
|
146 | 146 | } |
|
147 | 147 | |
|
148 | 148 | Py_INCREF(Py_None); |
|
149 | 149 | return Py_None; |
|
150 | 150 | quit: |
|
151 | 151 | return NULL; |
|
152 | 152 | } |
|
153 | 153 | |
|
154 | 154 | static PyObject *parse_dirstate(PyObject *self, PyObject *args) |
|
155 | 155 | { |
|
156 | 156 | PyObject *dmap, *cmap, *parents = NULL, *ret = NULL; |
|
157 | 157 | PyObject *fname = NULL, *cname = NULL, *entry = NULL; |
|
158 |
char state, * |
|
|
158 | char state, *cur, *str, *cpos; | |
|
159 | 159 | int mode, size, mtime; |
|
160 | 160 | unsigned int flen; |
|
161 | int len; | |
|
161 | int len, pos = 40; | |
|
162 | 162 | |
|
163 | 163 | if (!PyArg_ParseTuple(args, "O!O!s#:parse_dirstate", |
|
164 | 164 | &PyDict_Type, &dmap, |
|
165 | 165 | &PyDict_Type, &cmap, |
|
166 | 166 | &str, &len)) |
|
167 | 167 | goto quit; |
|
168 | 168 | |
|
169 | 169 | /* read parents */ |
|
170 | 170 | if (len < 40) |
|
171 | 171 | goto quit; |
|
172 | 172 | |
|
173 | 173 | parents = Py_BuildValue("s#s#", str, 20, str + 20, 20); |
|
174 | 174 | if (!parents) |
|
175 | 175 | goto quit; |
|
176 | 176 | |
|
177 | 177 | /* read filenames */ |
|
178 | cur = str + 40; | |
|
179 |
|
|
|
180 | ||
|
181 | while (cur < end - 17) { | |
|
178 | while (pos >= 40 && pos < len) { | |
|
179 | cur = str + pos; | |
|
182 | 180 | /* unpack header */ |
|
183 | 181 | state = *cur; |
|
184 | 182 | mode = getbe32(cur + 1); |
|
185 | 183 | size = getbe32(cur + 5); |
|
186 | 184 | mtime = getbe32(cur + 9); |
|
187 | 185 | flen = getbe32(cur + 13); |
|
186 | pos += 17; | |
|
188 | 187 | cur += 17; |
|
189 |
if ( |
|
|
188 | if (flen > len - pos || flen < 0) { | |
|
190 | 189 | PyErr_SetString(PyExc_ValueError, "overflow in dirstate"); |
|
191 | 190 | goto quit; |
|
192 | 191 | } |
|
193 | 192 | |
|
194 | 193 | entry = Py_BuildValue("ciii", state, mode, size, mtime); |
|
195 | 194 | if (!entry) |
|
196 | 195 | goto quit; |
|
197 | 196 | PyObject_GC_UnTrack(entry); /* don't waste time with this */ |
|
198 | 197 | |
|
199 | 198 | cpos = memchr(cur, 0, flen); |
|
200 | 199 | if (cpos) { |
|
201 | 200 | fname = PyBytes_FromStringAndSize(cur, cpos - cur); |
|
202 | 201 | cname = PyBytes_FromStringAndSize(cpos + 1, |
|
203 | 202 | flen - (cpos - cur) - 1); |
|
204 | 203 | if (!fname || !cname || |
|
205 | 204 | PyDict_SetItem(cmap, fname, cname) == -1 || |
|
206 | 205 | PyDict_SetItem(dmap, fname, entry) == -1) |
|
207 | 206 | goto quit; |
|
208 | 207 | Py_DECREF(cname); |
|
209 | 208 | } else { |
|
210 | 209 | fname = PyBytes_FromStringAndSize(cur, flen); |
|
211 | 210 | if (!fname || |
|
212 | 211 | PyDict_SetItem(dmap, fname, entry) == -1) |
|
213 | 212 | goto quit; |
|
214 | 213 | } |
|
215 | cur += flen; | |
|
216 | 214 | Py_DECREF(fname); |
|
217 | 215 | Py_DECREF(entry); |
|
218 | 216 | fname = cname = entry = NULL; |
|
217 | pos += flen; | |
|
219 | 218 | } |
|
220 | 219 | |
|
221 | 220 | ret = parents; |
|
222 | 221 | Py_INCREF(ret); |
|
223 | 222 | quit: |
|
224 | 223 | Py_XDECREF(fname); |
|
225 | 224 | Py_XDECREF(cname); |
|
226 | 225 | Py_XDECREF(entry); |
|
227 | 226 | Py_XDECREF(parents); |
|
228 | 227 | return ret; |
|
229 | 228 | } |
|
230 | 229 | |
|
231 | 230 | static inline int getintat(PyObject *tuple, int off, uint32_t *v) |
|
232 | 231 | { |
|
233 | 232 | PyObject *o = PyTuple_GET_ITEM(tuple, off); |
|
234 | 233 | long val; |
|
235 | 234 | |
|
236 | 235 | if (PyInt_Check(o)) |
|
237 | 236 | val = PyInt_AS_LONG(o); |
|
238 | 237 | else if (PyLong_Check(o)) { |
|
239 | 238 | val = PyLong_AsLong(o); |
|
240 | 239 | if (val == -1 && PyErr_Occurred()) |
|
241 | 240 | return -1; |
|
242 | 241 | } else { |
|
243 | 242 | PyErr_SetString(PyExc_TypeError, "expected an int or long"); |
|
244 | 243 | return -1; |
|
245 | 244 | } |
|
246 | 245 | if (LONG_MAX > INT_MAX && (val > INT_MAX || val < INT_MIN)) { |
|
247 | 246 | PyErr_SetString(PyExc_OverflowError, |
|
248 | 247 | "Python value to large to convert to uint32_t"); |
|
249 | 248 | return -1; |
|
250 | 249 | } |
|
251 | 250 | *v = (uint32_t)val; |
|
252 | 251 | return 0; |
|
253 | 252 | } |
|
254 | 253 | |
|
255 | 254 | static PyObject *dirstate_unset; |
|
256 | 255 | |
|
257 | 256 | /* |
|
258 | 257 | * Efficiently pack a dirstate object into its on-disk format. |
|
259 | 258 | */ |
|
260 | 259 | static PyObject *pack_dirstate(PyObject *self, PyObject *args) |
|
261 | 260 | { |
|
262 | 261 | PyObject *packobj = NULL; |
|
263 | 262 | PyObject *map, *copymap, *pl; |
|
264 | 263 | Py_ssize_t nbytes, pos, l; |
|
265 | 264 | PyObject *k, *v, *pn; |
|
266 | 265 | char *p, *s; |
|
267 | 266 | double now; |
|
268 | 267 | |
|
269 | 268 | if (!PyArg_ParseTuple(args, "O!O!Od:pack_dirstate", |
|
270 | 269 | &PyDict_Type, &map, &PyDict_Type, ©map, |
|
271 | 270 | &pl, &now)) |
|
272 | 271 | return NULL; |
|
273 | 272 | |
|
274 | 273 | if (!PySequence_Check(pl) || PySequence_Size(pl) != 2) { |
|
275 | 274 | PyErr_SetString(PyExc_TypeError, "expected 2-element sequence"); |
|
276 | 275 | return NULL; |
|
277 | 276 | } |
|
278 | 277 | |
|
279 | 278 | /* Figure out how much we need to allocate. */ |
|
280 | 279 | for (nbytes = 40, pos = 0; PyDict_Next(map, &pos, &k, &v);) { |
|
281 | 280 | PyObject *c; |
|
282 | 281 | if (!PyString_Check(k)) { |
|
283 | 282 | PyErr_SetString(PyExc_TypeError, "expected string key"); |
|
284 | 283 | goto bail; |
|
285 | 284 | } |
|
286 | 285 | nbytes += PyString_GET_SIZE(k) + 17; |
|
287 | 286 | c = PyDict_GetItem(copymap, k); |
|
288 | 287 | if (c) { |
|
289 | 288 | if (!PyString_Check(c)) { |
|
290 | 289 | PyErr_SetString(PyExc_TypeError, |
|
291 | 290 | "expected string key"); |
|
292 | 291 | goto bail; |
|
293 | 292 | } |
|
294 | 293 | nbytes += PyString_GET_SIZE(c) + 1; |
|
295 | 294 | } |
|
296 | 295 | } |
|
297 | 296 | |
|
298 | 297 | packobj = PyString_FromStringAndSize(NULL, nbytes); |
|
299 | 298 | if (packobj == NULL) |
|
300 | 299 | goto bail; |
|
301 | 300 | |
|
302 | 301 | p = PyString_AS_STRING(packobj); |
|
303 | 302 | |
|
304 | 303 | pn = PySequence_ITEM(pl, 0); |
|
305 | 304 | if (PyString_AsStringAndSize(pn, &s, &l) == -1 || l != 20) { |
|
306 | 305 | PyErr_SetString(PyExc_TypeError, "expected a 20-byte hash"); |
|
307 | 306 | goto bail; |
|
308 | 307 | } |
|
309 | 308 | memcpy(p, s, l); |
|
310 | 309 | p += 20; |
|
311 | 310 | pn = PySequence_ITEM(pl, 1); |
|
312 | 311 | if (PyString_AsStringAndSize(pn, &s, &l) == -1 || l != 20) { |
|
313 | 312 | PyErr_SetString(PyExc_TypeError, "expected a 20-byte hash"); |
|
314 | 313 | goto bail; |
|
315 | 314 | } |
|
316 | 315 | memcpy(p, s, l); |
|
317 | 316 | p += 20; |
|
318 | 317 | |
|
319 | 318 | for (pos = 0; PyDict_Next(map, &pos, &k, &v); ) { |
|
320 | 319 | uint32_t mode, size, mtime; |
|
321 | 320 | Py_ssize_t len, l; |
|
322 | 321 | PyObject *o; |
|
323 | 322 | char *s, *t; |
|
324 | 323 | |
|
325 | 324 | if (!PyTuple_Check(v) || PyTuple_GET_SIZE(v) != 4) { |
|
326 | 325 | PyErr_SetString(PyExc_TypeError, "expected a 4-tuple"); |
|
327 | 326 | goto bail; |
|
328 | 327 | } |
|
329 | 328 | o = PyTuple_GET_ITEM(v, 0); |
|
330 | 329 | if (PyString_AsStringAndSize(o, &s, &l) == -1 || l != 1) { |
|
331 | 330 | PyErr_SetString(PyExc_TypeError, "expected one byte"); |
|
332 | 331 | goto bail; |
|
333 | 332 | } |
|
334 | 333 | *p++ = *s; |
|
335 | 334 | if (getintat(v, 1, &mode) == -1) |
|
336 | 335 | goto bail; |
|
337 | 336 | if (getintat(v, 2, &size) == -1) |
|
338 | 337 | goto bail; |
|
339 | 338 | if (getintat(v, 3, &mtime) == -1) |
|
340 | 339 | goto bail; |
|
341 | 340 | if (*s == 'n' && mtime == (uint32_t)now) { |
|
342 | 341 | /* See pure/parsers.py:pack_dirstate for why we do |
|
343 | 342 | * this. */ |
|
344 | 343 | if (PyDict_SetItem(map, k, dirstate_unset) == -1) |
|
345 | 344 | goto bail; |
|
346 | 345 | mtime = -1; |
|
347 | 346 | } |
|
348 | 347 | putbe32(mode, p); |
|
349 | 348 | putbe32(size, p + 4); |
|
350 | 349 | putbe32(mtime, p + 8); |
|
351 | 350 | t = p + 12; |
|
352 | 351 | p += 16; |
|
353 | 352 | len = PyString_GET_SIZE(k); |
|
354 | 353 | memcpy(p, PyString_AS_STRING(k), len); |
|
355 | 354 | p += len; |
|
356 | 355 | o = PyDict_GetItem(copymap, k); |
|
357 | 356 | if (o) { |
|
358 | 357 | *p++ = '\0'; |
|
359 | 358 | l = PyString_GET_SIZE(o); |
|
360 | 359 | memcpy(p, PyString_AS_STRING(o), l); |
|
361 | 360 | p += l; |
|
362 | 361 | len += l + 1; |
|
363 | 362 | } |
|
364 | 363 | putbe32((uint32_t)len, t); |
|
365 | 364 | } |
|
366 | 365 | |
|
367 | 366 | pos = p - PyString_AS_STRING(packobj); |
|
368 | 367 | if (pos != nbytes) { |
|
369 | 368 | PyErr_Format(PyExc_SystemError, "bad dirstate size: %ld != %ld", |
|
370 | 369 | (long)pos, (long)nbytes); |
|
371 | 370 | goto bail; |
|
372 | 371 | } |
|
373 | 372 | |
|
374 | 373 | return packobj; |
|
375 | 374 | bail: |
|
376 | 375 | Py_XDECREF(packobj); |
|
377 | 376 | return NULL; |
|
378 | 377 | } |
|
379 | 378 | |
|
380 | 379 | /* |
|
381 | 380 | * A base-16 trie for fast node->rev mapping. |
|
382 | 381 | * |
|
383 | 382 | * Positive value is index of the next node in the trie |
|
384 | 383 | * Negative value is a leaf: -(rev + 1) |
|
385 | 384 | * Zero is empty |
|
386 | 385 | */ |
|
387 | 386 | typedef struct { |
|
388 | 387 | int children[16]; |
|
389 | 388 | } nodetree; |
|
390 | 389 | |
|
391 | 390 | /* |
|
392 | 391 | * This class has two behaviours. |
|
393 | 392 | * |
|
394 | 393 | * When used in a list-like way (with integer keys), we decode an |
|
395 | 394 | * entry in a RevlogNG index file on demand. Our last entry is a |
|
396 | 395 | * sentinel, always a nullid. We have limited support for |
|
397 | 396 | * integer-keyed insert and delete, only at elements right before the |
|
398 | 397 | * sentinel. |
|
399 | 398 | * |
|
400 | 399 | * With string keys, we lazily perform a reverse mapping from node to |
|
401 | 400 | * rev, using a base-16 trie. |
|
402 | 401 | */ |
|
403 | 402 | typedef struct { |
|
404 | 403 | PyObject_HEAD |
|
405 | 404 | /* Type-specific fields go here. */ |
|
406 | 405 | PyObject *data; /* raw bytes of index */ |
|
407 | 406 | PyObject **cache; /* cached tuples */ |
|
408 | 407 | const char **offsets; /* populated on demand */ |
|
409 | 408 | Py_ssize_t raw_length; /* original number of elements */ |
|
410 | 409 | Py_ssize_t length; /* current number of elements */ |
|
411 | 410 | PyObject *added; /* populated on demand */ |
|
412 | 411 | PyObject *headrevs; /* cache, invalidated on changes */ |
|
413 | 412 | nodetree *nt; /* base-16 trie */ |
|
414 | 413 | int ntlength; /* # nodes in use */ |
|
415 | 414 | int ntcapacity; /* # nodes allocated */ |
|
416 | 415 | int ntdepth; /* maximum depth of tree */ |
|
417 | 416 | int ntsplits; /* # splits performed */ |
|
418 | 417 | int ntrev; /* last rev scanned */ |
|
419 | 418 | int ntlookups; /* # lookups */ |
|
420 | 419 | int ntmisses; /* # lookups that miss the cache */ |
|
421 | 420 | int inlined; |
|
422 | 421 | } indexObject; |
|
423 | 422 | |
|
424 | 423 | static Py_ssize_t index_length(const indexObject *self) |
|
425 | 424 | { |
|
426 | 425 | if (self->added == NULL) |
|
427 | 426 | return self->length; |
|
428 | 427 | return self->length + PyList_GET_SIZE(self->added); |
|
429 | 428 | } |
|
430 | 429 | |
|
431 | 430 | static PyObject *nullentry; |
|
432 | 431 | static const char nullid[20]; |
|
433 | 432 | |
|
434 | 433 | static long inline_scan(indexObject *self, const char **offsets); |
|
435 | 434 | |
|
436 | 435 | #if LONG_MAX == 0x7fffffffL |
|
437 | 436 | static char *tuple_format = "Kiiiiiis#"; |
|
438 | 437 | #else |
|
439 | 438 | static char *tuple_format = "kiiiiiis#"; |
|
440 | 439 | #endif |
|
441 | 440 | |
|
442 | 441 | /* A RevlogNG v1 index entry is 64 bytes long. */ |
|
443 | 442 | static const long v1_hdrsize = 64; |
|
444 | 443 | |
|
445 | 444 | /* |
|
446 | 445 | * Return a pointer to the beginning of a RevlogNG record. |
|
447 | 446 | */ |
|
448 | 447 | static const char *index_deref(indexObject *self, Py_ssize_t pos) |
|
449 | 448 | { |
|
450 | 449 | if (self->inlined && pos > 0) { |
|
451 | 450 | if (self->offsets == NULL) { |
|
452 | 451 | self->offsets = malloc(self->raw_length * |
|
453 | 452 | sizeof(*self->offsets)); |
|
454 | 453 | if (self->offsets == NULL) |
|
455 | 454 | return (const char *)PyErr_NoMemory(); |
|
456 | 455 | inline_scan(self, self->offsets); |
|
457 | 456 | } |
|
458 | 457 | return self->offsets[pos]; |
|
459 | 458 | } |
|
460 | 459 | |
|
461 | 460 | return PyString_AS_STRING(self->data) + pos * v1_hdrsize; |
|
462 | 461 | } |
|
463 | 462 | |
|
464 | 463 | /* |
|
465 | 464 | * RevlogNG format (all in big endian, data may be inlined): |
|
466 | 465 | * 6 bytes: offset |
|
467 | 466 | * 2 bytes: flags |
|
468 | 467 | * 4 bytes: compressed length |
|
469 | 468 | * 4 bytes: uncompressed length |
|
470 | 469 | * 4 bytes: base revision |
|
471 | 470 | * 4 bytes: link revision |
|
472 | 471 | * 4 bytes: parent 1 revision |
|
473 | 472 | * 4 bytes: parent 2 revision |
|
474 | 473 | * 32 bytes: nodeid (only 20 bytes used) |
|
475 | 474 | */ |
|
476 | 475 | static PyObject *index_get(indexObject *self, Py_ssize_t pos) |
|
477 | 476 | { |
|
478 | 477 | uint64_t offset_flags; |
|
479 | 478 | int comp_len, uncomp_len, base_rev, link_rev, parent_1, parent_2; |
|
480 | 479 | const char *c_node_id; |
|
481 | 480 | const char *data; |
|
482 | 481 | Py_ssize_t length = index_length(self); |
|
483 | 482 | PyObject *entry; |
|
484 | 483 | |
|
485 | 484 | if (pos < 0) |
|
486 | 485 | pos += length; |
|
487 | 486 | |
|
488 | 487 | if (pos < 0 || pos >= length) { |
|
489 | 488 | PyErr_SetString(PyExc_IndexError, "revlog index out of range"); |
|
490 | 489 | return NULL; |
|
491 | 490 | } |
|
492 | 491 | |
|
493 | 492 | if (pos == length - 1) { |
|
494 | 493 | Py_INCREF(nullentry); |
|
495 | 494 | return nullentry; |
|
496 | 495 | } |
|
497 | 496 | |
|
498 | 497 | if (pos >= self->length - 1) { |
|
499 | 498 | PyObject *obj; |
|
500 | 499 | obj = PyList_GET_ITEM(self->added, pos - self->length + 1); |
|
501 | 500 | Py_INCREF(obj); |
|
502 | 501 | return obj; |
|
503 | 502 | } |
|
504 | 503 | |
|
505 | 504 | if (self->cache) { |
|
506 | 505 | if (self->cache[pos]) { |
|
507 | 506 | Py_INCREF(self->cache[pos]); |
|
508 | 507 | return self->cache[pos]; |
|
509 | 508 | } |
|
510 | 509 | } else { |
|
511 | 510 | self->cache = calloc(self->raw_length, sizeof(PyObject *)); |
|
512 | 511 | if (self->cache == NULL) |
|
513 | 512 | return PyErr_NoMemory(); |
|
514 | 513 | } |
|
515 | 514 | |
|
516 | 515 | data = index_deref(self, pos); |
|
517 | 516 | if (data == NULL) |
|
518 | 517 | return NULL; |
|
519 | 518 | |
|
520 | 519 | offset_flags = getbe32(data + 4); |
|
521 | 520 | if (pos == 0) /* mask out version number for the first entry */ |
|
522 | 521 | offset_flags &= 0xFFFF; |
|
523 | 522 | else { |
|
524 | 523 | uint32_t offset_high = getbe32(data); |
|
525 | 524 | offset_flags |= ((uint64_t)offset_high) << 32; |
|
526 | 525 | } |
|
527 | 526 | |
|
528 | 527 | comp_len = getbe32(data + 8); |
|
529 | 528 | uncomp_len = getbe32(data + 12); |
|
530 | 529 | base_rev = getbe32(data + 16); |
|
531 | 530 | link_rev = getbe32(data + 20); |
|
532 | 531 | parent_1 = getbe32(data + 24); |
|
533 | 532 | parent_2 = getbe32(data + 28); |
|
534 | 533 | c_node_id = data + 32; |
|
535 | 534 | |
|
536 | 535 | entry = Py_BuildValue(tuple_format, offset_flags, comp_len, |
|
537 | 536 | uncomp_len, base_rev, link_rev, |
|
538 | 537 | parent_1, parent_2, c_node_id, 20); |
|
539 | 538 | |
|
540 | 539 | if (entry) { |
|
541 | 540 | PyObject_GC_UnTrack(entry); |
|
542 | 541 | Py_INCREF(entry); |
|
543 | 542 | } |
|
544 | 543 | |
|
545 | 544 | self->cache[pos] = entry; |
|
546 | 545 | |
|
547 | 546 | return entry; |
|
548 | 547 | } |
|
549 | 548 | |
|
550 | 549 | /* |
|
551 | 550 | * Return the 20-byte SHA of the node corresponding to the given rev. |
|
552 | 551 | */ |
|
553 | 552 | static const char *index_node(indexObject *self, Py_ssize_t pos) |
|
554 | 553 | { |
|
555 | 554 | Py_ssize_t length = index_length(self); |
|
556 | 555 | const char *data; |
|
557 | 556 | |
|
558 | 557 | if (pos == length - 1 || pos == INT_MAX) |
|
559 | 558 | return nullid; |
|
560 | 559 | |
|
561 | 560 | if (pos >= length) |
|
562 | 561 | return NULL; |
|
563 | 562 | |
|
564 | 563 | if (pos >= self->length - 1) { |
|
565 | 564 | PyObject *tuple, *str; |
|
566 | 565 | tuple = PyList_GET_ITEM(self->added, pos - self->length + 1); |
|
567 | 566 | str = PyTuple_GetItem(tuple, 7); |
|
568 | 567 | return str ? PyString_AS_STRING(str) : NULL; |
|
569 | 568 | } |
|
570 | 569 | |
|
571 | 570 | data = index_deref(self, pos); |
|
572 | 571 | return data ? data + 32 : NULL; |
|
573 | 572 | } |
|
574 | 573 | |
|
575 | 574 | static int nt_insert(indexObject *self, const char *node, int rev); |
|
576 | 575 | |
|
577 | 576 | static int node_check(PyObject *obj, char **node, Py_ssize_t *nodelen) |
|
578 | 577 | { |
|
579 | 578 | if (PyString_AsStringAndSize(obj, node, nodelen) == -1) |
|
580 | 579 | return -1; |
|
581 | 580 | if (*nodelen == 20) |
|
582 | 581 | return 0; |
|
583 | 582 | PyErr_SetString(PyExc_ValueError, "20-byte hash required"); |
|
584 | 583 | return -1; |
|
585 | 584 | } |
|
586 | 585 | |
|
587 | 586 | static PyObject *index_insert(indexObject *self, PyObject *args) |
|
588 | 587 | { |
|
589 | 588 | PyObject *obj; |
|
590 | 589 | char *node; |
|
591 | 590 | long offset; |
|
592 | 591 | Py_ssize_t len, nodelen; |
|
593 | 592 | |
|
594 | 593 | if (!PyArg_ParseTuple(args, "lO", &offset, &obj)) |
|
595 | 594 | return NULL; |
|
596 | 595 | |
|
597 | 596 | if (!PyTuple_Check(obj) || PyTuple_GET_SIZE(obj) != 8) { |
|
598 | 597 | PyErr_SetString(PyExc_TypeError, "8-tuple required"); |
|
599 | 598 | return NULL; |
|
600 | 599 | } |
|
601 | 600 | |
|
602 | 601 | if (node_check(PyTuple_GET_ITEM(obj, 7), &node, &nodelen) == -1) |
|
603 | 602 | return NULL; |
|
604 | 603 | |
|
605 | 604 | len = index_length(self); |
|
606 | 605 | |
|
607 | 606 | if (offset < 0) |
|
608 | 607 | offset += len; |
|
609 | 608 | |
|
610 | 609 | if (offset != len - 1) { |
|
611 | 610 | PyErr_SetString(PyExc_IndexError, |
|
612 | 611 | "insert only supported at index -1"); |
|
613 | 612 | return NULL; |
|
614 | 613 | } |
|
615 | 614 | |
|
616 | 615 | if (offset > INT_MAX) { |
|
617 | 616 | PyErr_SetString(PyExc_ValueError, |
|
618 | 617 | "currently only 2**31 revs supported"); |
|
619 | 618 | return NULL; |
|
620 | 619 | } |
|
621 | 620 | |
|
622 | 621 | if (self->added == NULL) { |
|
623 | 622 | self->added = PyList_New(0); |
|
624 | 623 | if (self->added == NULL) |
|
625 | 624 | return NULL; |
|
626 | 625 | } |
|
627 | 626 | |
|
628 | 627 | if (PyList_Append(self->added, obj) == -1) |
|
629 | 628 | return NULL; |
|
630 | 629 | |
|
631 | 630 | if (self->nt) |
|
632 | 631 | nt_insert(self, node, (int)offset); |
|
633 | 632 | |
|
634 | 633 | Py_CLEAR(self->headrevs); |
|
635 | 634 | Py_RETURN_NONE; |
|
636 | 635 | } |
|
637 | 636 | |
|
638 | 637 | static void _index_clearcaches(indexObject *self) |
|
639 | 638 | { |
|
640 | 639 | if (self->cache) { |
|
641 | 640 | Py_ssize_t i; |
|
642 | 641 | |
|
643 | 642 | for (i = 0; i < self->raw_length; i++) |
|
644 | 643 | Py_CLEAR(self->cache[i]); |
|
645 | 644 | free(self->cache); |
|
646 | 645 | self->cache = NULL; |
|
647 | 646 | } |
|
648 | 647 | if (self->offsets) { |
|
649 | 648 | free(self->offsets); |
|
650 | 649 | self->offsets = NULL; |
|
651 | 650 | } |
|
652 | 651 | if (self->nt) { |
|
653 | 652 | free(self->nt); |
|
654 | 653 | self->nt = NULL; |
|
655 | 654 | } |
|
656 | 655 | Py_CLEAR(self->headrevs); |
|
657 | 656 | } |
|
658 | 657 | |
|
659 | 658 | static PyObject *index_clearcaches(indexObject *self) |
|
660 | 659 | { |
|
661 | 660 | _index_clearcaches(self); |
|
662 | 661 | self->ntlength = self->ntcapacity = 0; |
|
663 | 662 | self->ntdepth = self->ntsplits = 0; |
|
664 | 663 | self->ntrev = -1; |
|
665 | 664 | self->ntlookups = self->ntmisses = 0; |
|
666 | 665 | Py_RETURN_NONE; |
|
667 | 666 | } |
|
668 | 667 | |
|
669 | 668 | static PyObject *index_stats(indexObject *self) |
|
670 | 669 | { |
|
671 | 670 | PyObject *obj = PyDict_New(); |
|
672 | 671 | |
|
673 | 672 | if (obj == NULL) |
|
674 | 673 | return NULL; |
|
675 | 674 | |
|
676 | 675 | #define istat(__n, __d) \ |
|
677 | 676 | if (PyDict_SetItemString(obj, __d, PyInt_FromSsize_t(self->__n)) == -1) \ |
|
678 | 677 | goto bail; |
|
679 | 678 | |
|
680 | 679 | if (self->added) { |
|
681 | 680 | Py_ssize_t len = PyList_GET_SIZE(self->added); |
|
682 | 681 | if (PyDict_SetItemString(obj, "index entries added", |
|
683 | 682 | PyInt_FromSsize_t(len)) == -1) |
|
684 | 683 | goto bail; |
|
685 | 684 | } |
|
686 | 685 | |
|
687 | 686 | if (self->raw_length != self->length - 1) |
|
688 | 687 | istat(raw_length, "revs on disk"); |
|
689 | 688 | istat(length, "revs in memory"); |
|
690 | 689 | istat(ntcapacity, "node trie capacity"); |
|
691 | 690 | istat(ntdepth, "node trie depth"); |
|
692 | 691 | istat(ntlength, "node trie count"); |
|
693 | 692 | istat(ntlookups, "node trie lookups"); |
|
694 | 693 | istat(ntmisses, "node trie misses"); |
|
695 | 694 | istat(ntrev, "node trie last rev scanned"); |
|
696 | 695 | istat(ntsplits, "node trie splits"); |
|
697 | 696 | |
|
698 | 697 | #undef istat |
|
699 | 698 | |
|
700 | 699 | return obj; |
|
701 | 700 | |
|
702 | 701 | bail: |
|
703 | 702 | Py_XDECREF(obj); |
|
704 | 703 | return NULL; |
|
705 | 704 | } |
|
706 | 705 | |
|
707 | 706 | /* |
|
708 | 707 | * When we cache a list, we want to be sure the caller can't mutate |
|
709 | 708 | * the cached copy. |
|
710 | 709 | */ |
|
711 | 710 | static PyObject *list_copy(PyObject *list) |
|
712 | 711 | { |
|
713 | 712 | Py_ssize_t len = PyList_GET_SIZE(list); |
|
714 | 713 | PyObject *newlist = PyList_New(len); |
|
715 | 714 | Py_ssize_t i; |
|
716 | 715 | |
|
717 | 716 | if (newlist == NULL) |
|
718 | 717 | return NULL; |
|
719 | 718 | |
|
720 | 719 | for (i = 0; i < len; i++) { |
|
721 | 720 | PyObject *obj = PyList_GET_ITEM(list, i); |
|
722 | 721 | Py_INCREF(obj); |
|
723 | 722 | PyList_SET_ITEM(newlist, i, obj); |
|
724 | 723 | } |
|
725 | 724 | |
|
726 | 725 | return newlist; |
|
727 | 726 | } |
|
728 | 727 | |
|
729 | 728 | static PyObject *index_headrevs(indexObject *self) |
|
730 | 729 | { |
|
731 | 730 | Py_ssize_t i, len, addlen; |
|
732 | 731 | char *nothead = NULL; |
|
733 | 732 | PyObject *heads; |
|
734 | 733 | |
|
735 | 734 | if (self->headrevs) |
|
736 | 735 | return list_copy(self->headrevs); |
|
737 | 736 | |
|
738 | 737 | len = index_length(self) - 1; |
|
739 | 738 | heads = PyList_New(0); |
|
740 | 739 | if (heads == NULL) |
|
741 | 740 | goto bail; |
|
742 | 741 | if (len == 0) { |
|
743 | 742 | PyObject *nullid = PyInt_FromLong(-1); |
|
744 | 743 | if (nullid == NULL || PyList_Append(heads, nullid) == -1) { |
|
745 | 744 | Py_XDECREF(nullid); |
|
746 | 745 | goto bail; |
|
747 | 746 | } |
|
748 | 747 | goto done; |
|
749 | 748 | } |
|
750 | 749 | |
|
751 | 750 | nothead = calloc(len, 1); |
|
752 | 751 | if (nothead == NULL) |
|
753 | 752 | goto bail; |
|
754 | 753 | |
|
755 | 754 | for (i = 0; i < self->raw_length; i++) { |
|
756 | 755 | const char *data = index_deref(self, i); |
|
757 | 756 | int parent_1 = getbe32(data + 24); |
|
758 | 757 | int parent_2 = getbe32(data + 28); |
|
759 | 758 | if (parent_1 >= 0) |
|
760 | 759 | nothead[parent_1] = 1; |
|
761 | 760 | if (parent_2 >= 0) |
|
762 | 761 | nothead[parent_2] = 1; |
|
763 | 762 | } |
|
764 | 763 | |
|
765 | 764 | addlen = self->added ? PyList_GET_SIZE(self->added) : 0; |
|
766 | 765 | |
|
767 | 766 | for (i = 0; i < addlen; i++) { |
|
768 | 767 | PyObject *rev = PyList_GET_ITEM(self->added, i); |
|
769 | 768 | PyObject *p1 = PyTuple_GET_ITEM(rev, 5); |
|
770 | 769 | PyObject *p2 = PyTuple_GET_ITEM(rev, 6); |
|
771 | 770 | long parent_1, parent_2; |
|
772 | 771 | |
|
773 | 772 | if (!PyInt_Check(p1) || !PyInt_Check(p2)) { |
|
774 | 773 | PyErr_SetString(PyExc_TypeError, |
|
775 | 774 | "revlog parents are invalid"); |
|
776 | 775 | goto bail; |
|
777 | 776 | } |
|
778 | 777 | parent_1 = PyInt_AS_LONG(p1); |
|
779 | 778 | parent_2 = PyInt_AS_LONG(p2); |
|
780 | 779 | if (parent_1 >= 0) |
|
781 | 780 | nothead[parent_1] = 1; |
|
782 | 781 | if (parent_2 >= 0) |
|
783 | 782 | nothead[parent_2] = 1; |
|
784 | 783 | } |
|
785 | 784 | |
|
786 | 785 | for (i = 0; i < len; i++) { |
|
787 | 786 | PyObject *head; |
|
788 | 787 | |
|
789 | 788 | if (nothead[i]) |
|
790 | 789 | continue; |
|
791 | 790 | head = PyInt_FromLong(i); |
|
792 | 791 | if (head == NULL || PyList_Append(heads, head) == -1) { |
|
793 | 792 | Py_XDECREF(head); |
|
794 | 793 | goto bail; |
|
795 | 794 | } |
|
796 | 795 | } |
|
797 | 796 | |
|
798 | 797 | done: |
|
799 | 798 | self->headrevs = heads; |
|
800 | 799 | free(nothead); |
|
801 | 800 | return list_copy(self->headrevs); |
|
802 | 801 | bail: |
|
803 | 802 | Py_XDECREF(heads); |
|
804 | 803 | free(nothead); |
|
805 | 804 | return NULL; |
|
806 | 805 | } |
|
807 | 806 | |
|
808 | 807 | static inline int nt_level(const char *node, Py_ssize_t level) |
|
809 | 808 | { |
|
810 | 809 | int v = node[level>>1]; |
|
811 | 810 | if (!(level & 1)) |
|
812 | 811 | v >>= 4; |
|
813 | 812 | return v & 0xf; |
|
814 | 813 | } |
|
815 | 814 | |
|
816 | 815 | /* |
|
817 | 816 | * Return values: |
|
818 | 817 | * |
|
819 | 818 | * -4: match is ambiguous (multiple candidates) |
|
820 | 819 | * -2: not found |
|
821 | 820 | * rest: valid rev |
|
822 | 821 | */ |
|
823 | 822 | static int nt_find(indexObject *self, const char *node, Py_ssize_t nodelen, |
|
824 | 823 | int hex) |
|
825 | 824 | { |
|
826 | 825 | int (*getnybble)(const char *, Py_ssize_t) = hex ? hexdigit : nt_level; |
|
827 | 826 | int level, maxlevel, off; |
|
828 | 827 | |
|
829 | 828 | if (nodelen == 20 && node[0] == '\0' && memcmp(node, nullid, 20) == 0) |
|
830 | 829 | return -1; |
|
831 | 830 | |
|
832 | 831 | if (self->nt == NULL) |
|
833 | 832 | return -2; |
|
834 | 833 | |
|
835 | 834 | if (hex) |
|
836 | 835 | maxlevel = nodelen > 40 ? 40 : (int)nodelen; |
|
837 | 836 | else |
|
838 | 837 | maxlevel = nodelen > 20 ? 40 : ((int)nodelen * 2); |
|
839 | 838 | |
|
840 | 839 | for (level = off = 0; level < maxlevel; level++) { |
|
841 | 840 | int k = getnybble(node, level); |
|
842 | 841 | nodetree *n = &self->nt[off]; |
|
843 | 842 | int v = n->children[k]; |
|
844 | 843 | |
|
845 | 844 | if (v < 0) { |
|
846 | 845 | const char *n; |
|
847 | 846 | Py_ssize_t i; |
|
848 | 847 | |
|
849 | 848 | v = -v - 1; |
|
850 | 849 | n = index_node(self, v); |
|
851 | 850 | if (n == NULL) |
|
852 | 851 | return -2; |
|
853 | 852 | for (i = level; i < maxlevel; i++) |
|
854 | 853 | if (getnybble(node, i) != nt_level(n, i)) |
|
855 | 854 | return -2; |
|
856 | 855 | return v; |
|
857 | 856 | } |
|
858 | 857 | if (v == 0) |
|
859 | 858 | return -2; |
|
860 | 859 | off = v; |
|
861 | 860 | } |
|
862 | 861 | /* multiple matches against an ambiguous prefix */ |
|
863 | 862 | return -4; |
|
864 | 863 | } |
|
865 | 864 | |
|
866 | 865 | static int nt_new(indexObject *self) |
|
867 | 866 | { |
|
868 | 867 | if (self->ntlength == self->ntcapacity) { |
|
869 | 868 | self->ntcapacity *= 2; |
|
870 | 869 | self->nt = realloc(self->nt, |
|
871 | 870 | self->ntcapacity * sizeof(nodetree)); |
|
872 | 871 | if (self->nt == NULL) { |
|
873 | 872 | PyErr_SetString(PyExc_MemoryError, "out of memory"); |
|
874 | 873 | return -1; |
|
875 | 874 | } |
|
876 | 875 | memset(&self->nt[self->ntlength], 0, |
|
877 | 876 | sizeof(nodetree) * (self->ntcapacity - self->ntlength)); |
|
878 | 877 | } |
|
879 | 878 | return self->ntlength++; |
|
880 | 879 | } |
|
881 | 880 | |
|
882 | 881 | static int nt_insert(indexObject *self, const char *node, int rev) |
|
883 | 882 | { |
|
884 | 883 | int level = 0; |
|
885 | 884 | int off = 0; |
|
886 | 885 | |
|
887 | 886 | while (level < 40) { |
|
888 | 887 | int k = nt_level(node, level); |
|
889 | 888 | nodetree *n; |
|
890 | 889 | int v; |
|
891 | 890 | |
|
892 | 891 | n = &self->nt[off]; |
|
893 | 892 | v = n->children[k]; |
|
894 | 893 | |
|
895 | 894 | if (v == 0) { |
|
896 | 895 | n->children[k] = -rev - 1; |
|
897 | 896 | return 0; |
|
898 | 897 | } |
|
899 | 898 | if (v < 0) { |
|
900 | 899 | const char *oldnode = index_node(self, -v - 1); |
|
901 | 900 | int noff; |
|
902 | 901 | |
|
903 | 902 | if (!oldnode || !memcmp(oldnode, node, 20)) { |
|
904 | 903 | n->children[k] = -rev - 1; |
|
905 | 904 | return 0; |
|
906 | 905 | } |
|
907 | 906 | noff = nt_new(self); |
|
908 | 907 | if (noff == -1) |
|
909 | 908 | return -1; |
|
910 | 909 | /* self->nt may have been changed by realloc */ |
|
911 | 910 | self->nt[off].children[k] = noff; |
|
912 | 911 | off = noff; |
|
913 | 912 | n = &self->nt[off]; |
|
914 | 913 | n->children[nt_level(oldnode, ++level)] = v; |
|
915 | 914 | if (level > self->ntdepth) |
|
916 | 915 | self->ntdepth = level; |
|
917 | 916 | self->ntsplits += 1; |
|
918 | 917 | } else { |
|
919 | 918 | level += 1; |
|
920 | 919 | off = v; |
|
921 | 920 | } |
|
922 | 921 | } |
|
923 | 922 | |
|
924 | 923 | return -1; |
|
925 | 924 | } |
|
926 | 925 | |
|
927 | 926 | static int nt_init(indexObject *self) |
|
928 | 927 | { |
|
929 | 928 | if (self->nt == NULL) { |
|
930 | 929 | if (self->raw_length > INT_MAX) { |
|
931 | 930 | PyErr_SetString(PyExc_ValueError, "overflow in nt_init"); |
|
932 | 931 | return -1; |
|
933 | 932 | } |
|
934 | 933 | self->ntcapacity = self->raw_length < 4 |
|
935 | 934 | ? 4 : (int)self->raw_length / 2; |
|
936 | 935 | |
|
937 | 936 | self->nt = calloc(self->ntcapacity, sizeof(nodetree)); |
|
938 | 937 | if (self->nt == NULL) { |
|
939 | 938 | PyErr_NoMemory(); |
|
940 | 939 | return -1; |
|
941 | 940 | } |
|
942 | 941 | self->ntlength = 1; |
|
943 | 942 | self->ntrev = (int)index_length(self) - 1; |
|
944 | 943 | self->ntlookups = 1; |
|
945 | 944 | self->ntmisses = 0; |
|
946 | 945 | if (nt_insert(self, nullid, INT_MAX) == -1) |
|
947 | 946 | return -1; |
|
948 | 947 | } |
|
949 | 948 | return 0; |
|
950 | 949 | } |
|
951 | 950 | |
|
952 | 951 | /* |
|
953 | 952 | * Return values: |
|
954 | 953 | * |
|
955 | 954 | * -3: error (exception set) |
|
956 | 955 | * -2: not found (no exception set) |
|
957 | 956 | * rest: valid rev |
|
958 | 957 | */ |
|
959 | 958 | static int index_find_node(indexObject *self, |
|
960 | 959 | const char *node, Py_ssize_t nodelen) |
|
961 | 960 | { |
|
962 | 961 | int rev; |
|
963 | 962 | |
|
964 | 963 | self->ntlookups++; |
|
965 | 964 | rev = nt_find(self, node, nodelen, 0); |
|
966 | 965 | if (rev >= -1) |
|
967 | 966 | return rev; |
|
968 | 967 | |
|
969 | 968 | if (nt_init(self) == -1) |
|
970 | 969 | return -3; |
|
971 | 970 | |
|
972 | 971 | /* |
|
973 | 972 | * For the first handful of lookups, we scan the entire index, |
|
974 | 973 | * and cache only the matching nodes. This optimizes for cases |
|
975 | 974 | * like "hg tip", where only a few nodes are accessed. |
|
976 | 975 | * |
|
977 | 976 | * After that, we cache every node we visit, using a single |
|
978 | 977 | * scan amortized over multiple lookups. This gives the best |
|
979 | 978 | * bulk performance, e.g. for "hg log". |
|
980 | 979 | */ |
|
981 | 980 | if (self->ntmisses++ < 4) { |
|
982 | 981 | for (rev = self->ntrev - 1; rev >= 0; rev--) { |
|
983 | 982 | const char *n = index_node(self, rev); |
|
984 | 983 | if (n == NULL) |
|
985 | 984 | return -2; |
|
986 | 985 | if (memcmp(node, n, nodelen > 20 ? 20 : nodelen) == 0) { |
|
987 | 986 | if (nt_insert(self, n, rev) == -1) |
|
988 | 987 | return -3; |
|
989 | 988 | break; |
|
990 | 989 | } |
|
991 | 990 | } |
|
992 | 991 | } else { |
|
993 | 992 | for (rev = self->ntrev - 1; rev >= 0; rev--) { |
|
994 | 993 | const char *n = index_node(self, rev); |
|
995 | 994 | if (n == NULL) { |
|
996 | 995 | self->ntrev = rev + 1; |
|
997 | 996 | return -2; |
|
998 | 997 | } |
|
999 | 998 | if (nt_insert(self, n, rev) == -1) { |
|
1000 | 999 | self->ntrev = rev + 1; |
|
1001 | 1000 | return -3; |
|
1002 | 1001 | } |
|
1003 | 1002 | if (memcmp(node, n, nodelen > 20 ? 20 : nodelen) == 0) { |
|
1004 | 1003 | break; |
|
1005 | 1004 | } |
|
1006 | 1005 | } |
|
1007 | 1006 | self->ntrev = rev; |
|
1008 | 1007 | } |
|
1009 | 1008 | |
|
1010 | 1009 | if (rev >= 0) |
|
1011 | 1010 | return rev; |
|
1012 | 1011 | return -2; |
|
1013 | 1012 | } |
|
1014 | 1013 | |
|
1015 | 1014 | static PyObject *raise_revlog_error(void) |
|
1016 | 1015 | { |
|
1017 | 1016 | static PyObject *errclass; |
|
1018 | 1017 | PyObject *mod = NULL, *errobj; |
|
1019 | 1018 | |
|
1020 | 1019 | if (errclass == NULL) { |
|
1021 | 1020 | PyObject *dict; |
|
1022 | 1021 | |
|
1023 | 1022 | mod = PyImport_ImportModule("mercurial.error"); |
|
1024 | 1023 | if (mod == NULL) |
|
1025 | 1024 | goto classfail; |
|
1026 | 1025 | |
|
1027 | 1026 | dict = PyModule_GetDict(mod); |
|
1028 | 1027 | if (dict == NULL) |
|
1029 | 1028 | goto classfail; |
|
1030 | 1029 | |
|
1031 | 1030 | errclass = PyDict_GetItemString(dict, "RevlogError"); |
|
1032 | 1031 | if (errclass == NULL) { |
|
1033 | 1032 | PyErr_SetString(PyExc_SystemError, |
|
1034 | 1033 | "could not find RevlogError"); |
|
1035 | 1034 | goto classfail; |
|
1036 | 1035 | } |
|
1037 | 1036 | Py_INCREF(errclass); |
|
1038 | 1037 | } |
|
1039 | 1038 | |
|
1040 | 1039 | errobj = PyObject_CallFunction(errclass, NULL); |
|
1041 | 1040 | if (errobj == NULL) |
|
1042 | 1041 | return NULL; |
|
1043 | 1042 | PyErr_SetObject(errclass, errobj); |
|
1044 | 1043 | return errobj; |
|
1045 | 1044 | |
|
1046 | 1045 | classfail: |
|
1047 | 1046 | Py_XDECREF(mod); |
|
1048 | 1047 | return NULL; |
|
1049 | 1048 | } |
|
1050 | 1049 | |
|
1051 | 1050 | static PyObject *index_getitem(indexObject *self, PyObject *value) |
|
1052 | 1051 | { |
|
1053 | 1052 | char *node; |
|
1054 | 1053 | Py_ssize_t nodelen; |
|
1055 | 1054 | int rev; |
|
1056 | 1055 | |
|
1057 | 1056 | if (PyInt_Check(value)) |
|
1058 | 1057 | return index_get(self, PyInt_AS_LONG(value)); |
|
1059 | 1058 | |
|
1060 | 1059 | if (node_check(value, &node, &nodelen) == -1) |
|
1061 | 1060 | return NULL; |
|
1062 | 1061 | rev = index_find_node(self, node, nodelen); |
|
1063 | 1062 | if (rev >= -1) |
|
1064 | 1063 | return PyInt_FromLong(rev); |
|
1065 | 1064 | if (rev == -2) |
|
1066 | 1065 | raise_revlog_error(); |
|
1067 | 1066 | return NULL; |
|
1068 | 1067 | } |
|
1069 | 1068 | |
|
1070 | 1069 | static int nt_partialmatch(indexObject *self, const char *node, |
|
1071 | 1070 | Py_ssize_t nodelen) |
|
1072 | 1071 | { |
|
1073 | 1072 | int rev; |
|
1074 | 1073 | |
|
1075 | 1074 | if (nt_init(self) == -1) |
|
1076 | 1075 | return -3; |
|
1077 | 1076 | |
|
1078 | 1077 | if (self->ntrev > 0) { |
|
1079 | 1078 | /* ensure that the radix tree is fully populated */ |
|
1080 | 1079 | for (rev = self->ntrev - 1; rev >= 0; rev--) { |
|
1081 | 1080 | const char *n = index_node(self, rev); |
|
1082 | 1081 | if (n == NULL) |
|
1083 | 1082 | return -2; |
|
1084 | 1083 | if (nt_insert(self, n, rev) == -1) |
|
1085 | 1084 | return -3; |
|
1086 | 1085 | } |
|
1087 | 1086 | self->ntrev = rev; |
|
1088 | 1087 | } |
|
1089 | 1088 | |
|
1090 | 1089 | return nt_find(self, node, nodelen, 1); |
|
1091 | 1090 | } |
|
1092 | 1091 | |
|
1093 | 1092 | static PyObject *index_partialmatch(indexObject *self, PyObject *args) |
|
1094 | 1093 | { |
|
1095 | 1094 | const char *fullnode; |
|
1096 | 1095 | int nodelen; |
|
1097 | 1096 | char *node; |
|
1098 | 1097 | int rev, i; |
|
1099 | 1098 | |
|
1100 | 1099 | if (!PyArg_ParseTuple(args, "s#", &node, &nodelen)) |
|
1101 | 1100 | return NULL; |
|
1102 | 1101 | |
|
1103 | 1102 | if (nodelen < 4) { |
|
1104 | 1103 | PyErr_SetString(PyExc_ValueError, "key too short"); |
|
1105 | 1104 | return NULL; |
|
1106 | 1105 | } |
|
1107 | 1106 | |
|
1108 | 1107 | if (nodelen > 40) { |
|
1109 | 1108 | PyErr_SetString(PyExc_ValueError, "key too long"); |
|
1110 | 1109 | return NULL; |
|
1111 | 1110 | } |
|
1112 | 1111 | |
|
1113 | 1112 | for (i = 0; i < nodelen; i++) |
|
1114 | 1113 | hexdigit(node, i); |
|
1115 | 1114 | if (PyErr_Occurred()) { |
|
1116 | 1115 | /* input contains non-hex characters */ |
|
1117 | 1116 | PyErr_Clear(); |
|
1118 | 1117 | Py_RETURN_NONE; |
|
1119 | 1118 | } |
|
1120 | 1119 | |
|
1121 | 1120 | rev = nt_partialmatch(self, node, nodelen); |
|
1122 | 1121 | |
|
1123 | 1122 | switch (rev) { |
|
1124 | 1123 | case -4: |
|
1125 | 1124 | raise_revlog_error(); |
|
1126 | 1125 | case -3: |
|
1127 | 1126 | return NULL; |
|
1128 | 1127 | case -2: |
|
1129 | 1128 | Py_RETURN_NONE; |
|
1130 | 1129 | case -1: |
|
1131 | 1130 | return PyString_FromStringAndSize(nullid, 20); |
|
1132 | 1131 | } |
|
1133 | 1132 | |
|
1134 | 1133 | fullnode = index_node(self, rev); |
|
1135 | 1134 | if (fullnode == NULL) { |
|
1136 | 1135 | PyErr_Format(PyExc_IndexError, |
|
1137 | 1136 | "could not access rev %d", rev); |
|
1138 | 1137 | return NULL; |
|
1139 | 1138 | } |
|
1140 | 1139 | return PyString_FromStringAndSize(fullnode, 20); |
|
1141 | 1140 | } |
|
1142 | 1141 | |
|
1143 | 1142 | static PyObject *index_m_get(indexObject *self, PyObject *args) |
|
1144 | 1143 | { |
|
1145 | 1144 | Py_ssize_t nodelen; |
|
1146 | 1145 | PyObject *val; |
|
1147 | 1146 | char *node; |
|
1148 | 1147 | int rev; |
|
1149 | 1148 | |
|
1150 | 1149 | if (!PyArg_ParseTuple(args, "O", &val)) |
|
1151 | 1150 | return NULL; |
|
1152 | 1151 | if (node_check(val, &node, &nodelen) == -1) |
|
1153 | 1152 | return NULL; |
|
1154 | 1153 | rev = index_find_node(self, node, nodelen); |
|
1155 | 1154 | if (rev == -3) |
|
1156 | 1155 | return NULL; |
|
1157 | 1156 | if (rev == -2) |
|
1158 | 1157 | Py_RETURN_NONE; |
|
1159 | 1158 | return PyInt_FromLong(rev); |
|
1160 | 1159 | } |
|
1161 | 1160 | |
|
1162 | 1161 | static int index_contains(indexObject *self, PyObject *value) |
|
1163 | 1162 | { |
|
1164 | 1163 | char *node; |
|
1165 | 1164 | Py_ssize_t nodelen; |
|
1166 | 1165 | |
|
1167 | 1166 | if (PyInt_Check(value)) { |
|
1168 | 1167 | long rev = PyInt_AS_LONG(value); |
|
1169 | 1168 | return rev >= -1 && rev < index_length(self); |
|
1170 | 1169 | } |
|
1171 | 1170 | |
|
1172 | 1171 | if (node_check(value, &node, &nodelen) == -1) |
|
1173 | 1172 | return -1; |
|
1174 | 1173 | |
|
1175 | 1174 | switch (index_find_node(self, node, nodelen)) { |
|
1176 | 1175 | case -3: |
|
1177 | 1176 | return -1; |
|
1178 | 1177 | case -2: |
|
1179 | 1178 | return 0; |
|
1180 | 1179 | default: |
|
1181 | 1180 | return 1; |
|
1182 | 1181 | } |
|
1183 | 1182 | } |
|
1184 | 1183 | |
|
1185 | 1184 | static inline void index_get_parents(indexObject *self, int rev, int *ps) |
|
1186 | 1185 | { |
|
1187 | 1186 | if (rev >= self->length - 1) { |
|
1188 | 1187 | PyObject *tuple = PyList_GET_ITEM(self->added, |
|
1189 | 1188 | rev - self->length + 1); |
|
1190 | 1189 | ps[0] = (int)PyInt_AS_LONG(PyTuple_GET_ITEM(tuple, 5)); |
|
1191 | 1190 | ps[1] = (int)PyInt_AS_LONG(PyTuple_GET_ITEM(tuple, 6)); |
|
1192 | 1191 | } else { |
|
1193 | 1192 | const char *data = index_deref(self, rev); |
|
1194 | 1193 | ps[0] = getbe32(data + 24); |
|
1195 | 1194 | ps[1] = getbe32(data + 28); |
|
1196 | 1195 | } |
|
1197 | 1196 | } |
|
1198 | 1197 | |
|
1199 | 1198 | typedef uint64_t bitmask; |
|
1200 | 1199 | |
|
1201 | 1200 | /* |
|
1202 | 1201 | * Given a disjoint set of revs, return all candidates for the |
|
1203 | 1202 | * greatest common ancestor. In revset notation, this is the set |
|
1204 | 1203 | * "heads(::a and ::b and ...)" |
|
1205 | 1204 | */ |
|
1206 | 1205 | static PyObject *find_gca_candidates(indexObject *self, const int *revs, |
|
1207 | 1206 | int revcount) |
|
1208 | 1207 | { |
|
1209 | 1208 | const bitmask allseen = (1ull << revcount) - 1; |
|
1210 | 1209 | const bitmask poison = 1ull << revcount; |
|
1211 | 1210 | PyObject *gca = PyList_New(0); |
|
1212 | 1211 | int i, v, interesting, left; |
|
1213 | 1212 | int maxrev = -1; |
|
1214 | 1213 | long sp; |
|
1215 | 1214 | bitmask *seen; |
|
1216 | 1215 | |
|
1217 | 1216 | if (gca == NULL) |
|
1218 | 1217 | return PyErr_NoMemory(); |
|
1219 | 1218 | |
|
1220 | 1219 | for (i = 0; i < revcount; i++) { |
|
1221 | 1220 | if (revs[i] > maxrev) |
|
1222 | 1221 | maxrev = revs[i]; |
|
1223 | 1222 | } |
|
1224 | 1223 | |
|
1225 | 1224 | seen = calloc(sizeof(*seen), maxrev + 1); |
|
1226 | 1225 | if (seen == NULL) { |
|
1227 | 1226 | Py_DECREF(gca); |
|
1228 | 1227 | return PyErr_NoMemory(); |
|
1229 | 1228 | } |
|
1230 | 1229 | |
|
1231 | 1230 | for (i = 0; i < revcount; i++) |
|
1232 | 1231 | seen[revs[i]] = 1ull << i; |
|
1233 | 1232 | |
|
1234 | 1233 | interesting = left = revcount; |
|
1235 | 1234 | |
|
1236 | 1235 | for (v = maxrev; v >= 0 && interesting; v--) { |
|
1237 | 1236 | long sv = seen[v]; |
|
1238 | 1237 | int parents[2]; |
|
1239 | 1238 | |
|
1240 | 1239 | if (!sv) |
|
1241 | 1240 | continue; |
|
1242 | 1241 | |
|
1243 | 1242 | if (sv < poison) { |
|
1244 | 1243 | interesting -= 1; |
|
1245 | 1244 | if (sv == allseen) { |
|
1246 | 1245 | PyObject *obj = PyInt_FromLong(v); |
|
1247 | 1246 | if (obj == NULL) |
|
1248 | 1247 | goto bail; |
|
1249 | 1248 | if (PyList_Append(gca, obj) == -1) { |
|
1250 | 1249 | Py_DECREF(obj); |
|
1251 | 1250 | goto bail; |
|
1252 | 1251 | } |
|
1253 | 1252 | sv |= poison; |
|
1254 | 1253 | for (i = 0; i < revcount; i++) { |
|
1255 | 1254 | if (revs[i] == v) { |
|
1256 | 1255 | if (--left <= 1) |
|
1257 | 1256 | goto done; |
|
1258 | 1257 | break; |
|
1259 | 1258 | } |
|
1260 | 1259 | } |
|
1261 | 1260 | } |
|
1262 | 1261 | } |
|
1263 | 1262 | index_get_parents(self, v, parents); |
|
1264 | 1263 | |
|
1265 | 1264 | for (i = 0; i < 2; i++) { |
|
1266 | 1265 | int p = parents[i]; |
|
1267 | 1266 | if (p == -1) |
|
1268 | 1267 | continue; |
|
1269 | 1268 | sp = seen[p]; |
|
1270 | 1269 | if (sv < poison) { |
|
1271 | 1270 | if (sp == 0) { |
|
1272 | 1271 | seen[p] = sv; |
|
1273 | 1272 | interesting++; |
|
1274 | 1273 | } |
|
1275 | 1274 | else if (sp != sv) |
|
1276 | 1275 | seen[p] |= sv; |
|
1277 | 1276 | } else { |
|
1278 | 1277 | if (sp && sp < poison) |
|
1279 | 1278 | interesting--; |
|
1280 | 1279 | seen[p] = sv; |
|
1281 | 1280 | } |
|
1282 | 1281 | } |
|
1283 | 1282 | } |
|
1284 | 1283 | |
|
1285 | 1284 | done: |
|
1286 | 1285 | free(seen); |
|
1287 | 1286 | return gca; |
|
1288 | 1287 | bail: |
|
1289 | 1288 | free(seen); |
|
1290 | 1289 | Py_XDECREF(gca); |
|
1291 | 1290 | return NULL; |
|
1292 | 1291 | } |
|
1293 | 1292 | |
|
1294 | 1293 | /* |
|
1295 | 1294 | * Given a disjoint set of revs, return the subset with the longest |
|
1296 | 1295 | * path to the root. |
|
1297 | 1296 | */ |
|
1298 | 1297 | static PyObject *find_deepest(indexObject *self, PyObject *revs) |
|
1299 | 1298 | { |
|
1300 | 1299 | const Py_ssize_t revcount = PyList_GET_SIZE(revs); |
|
1301 | 1300 | static const Py_ssize_t capacity = 24; |
|
1302 | 1301 | int *depth, *interesting = NULL; |
|
1303 | 1302 | int i, j, v, ninteresting; |
|
1304 | 1303 | PyObject *dict = NULL, *keys; |
|
1305 | 1304 | long *seen = NULL; |
|
1306 | 1305 | int maxrev = -1; |
|
1307 | 1306 | long final; |
|
1308 | 1307 | |
|
1309 | 1308 | if (revcount > capacity) { |
|
1310 | 1309 | PyErr_Format(PyExc_OverflowError, |
|
1311 | 1310 | "bitset size (%ld) > capacity (%ld)", |
|
1312 | 1311 | (long)revcount, (long)capacity); |
|
1313 | 1312 | return NULL; |
|
1314 | 1313 | } |
|
1315 | 1314 | |
|
1316 | 1315 | for (i = 0; i < revcount; i++) { |
|
1317 | 1316 | int n = (int)PyInt_AsLong(PyList_GET_ITEM(revs, i)); |
|
1318 | 1317 | if (n > maxrev) |
|
1319 | 1318 | maxrev = n; |
|
1320 | 1319 | } |
|
1321 | 1320 | |
|
1322 | 1321 | depth = calloc(sizeof(*depth), maxrev + 1); |
|
1323 | 1322 | if (depth == NULL) |
|
1324 | 1323 | return PyErr_NoMemory(); |
|
1325 | 1324 | |
|
1326 | 1325 | seen = calloc(sizeof(*seen), maxrev + 1); |
|
1327 | 1326 | if (seen == NULL) { |
|
1328 | 1327 | PyErr_NoMemory(); |
|
1329 | 1328 | goto bail; |
|
1330 | 1329 | } |
|
1331 | 1330 | |
|
1332 | 1331 | interesting = calloc(sizeof(*interesting), 2 << revcount); |
|
1333 | 1332 | if (interesting == NULL) { |
|
1334 | 1333 | PyErr_NoMemory(); |
|
1335 | 1334 | goto bail; |
|
1336 | 1335 | } |
|
1337 | 1336 | |
|
1338 | 1337 | if (PyList_Sort(revs) == -1) |
|
1339 | 1338 | goto bail; |
|
1340 | 1339 | |
|
1341 | 1340 | for (i = 0; i < revcount; i++) { |
|
1342 | 1341 | int n = (int)PyInt_AsLong(PyList_GET_ITEM(revs, i)); |
|
1343 | 1342 | long b = 1l << i; |
|
1344 | 1343 | depth[n] = 1; |
|
1345 | 1344 | seen[n] = b; |
|
1346 | 1345 | interesting[b] = 1; |
|
1347 | 1346 | } |
|
1348 | 1347 | |
|
1349 | 1348 | ninteresting = (int)revcount; |
|
1350 | 1349 | |
|
1351 | 1350 | for (v = maxrev; v >= 0 && ninteresting > 1; v--) { |
|
1352 | 1351 | int dv = depth[v]; |
|
1353 | 1352 | int parents[2]; |
|
1354 | 1353 | long sv; |
|
1355 | 1354 | |
|
1356 | 1355 | if (dv == 0) |
|
1357 | 1356 | continue; |
|
1358 | 1357 | |
|
1359 | 1358 | sv = seen[v]; |
|
1360 | 1359 | index_get_parents(self, v, parents); |
|
1361 | 1360 | |
|
1362 | 1361 | for (i = 0; i < 2; i++) { |
|
1363 | 1362 | int p = parents[i]; |
|
1364 | 1363 | long nsp, sp; |
|
1365 | 1364 | int dp; |
|
1366 | 1365 | |
|
1367 | 1366 | if (p == -1) |
|
1368 | 1367 | continue; |
|
1369 | 1368 | |
|
1370 | 1369 | dp = depth[p]; |
|
1371 | 1370 | nsp = sp = seen[p]; |
|
1372 | 1371 | if (dp <= dv) { |
|
1373 | 1372 | depth[p] = dv + 1; |
|
1374 | 1373 | if (sp != sv) { |
|
1375 | 1374 | interesting[sv] += 1; |
|
1376 | 1375 | nsp = seen[p] = sv; |
|
1377 | 1376 | if (sp) { |
|
1378 | 1377 | interesting[sp] -= 1; |
|
1379 | 1378 | if (interesting[sp] == 0) |
|
1380 | 1379 | ninteresting -= 1; |
|
1381 | 1380 | } |
|
1382 | 1381 | } |
|
1383 | 1382 | } |
|
1384 | 1383 | else if (dv == dp - 1) { |
|
1385 | 1384 | nsp = sp | sv; |
|
1386 | 1385 | if (nsp == sp) |
|
1387 | 1386 | continue; |
|
1388 | 1387 | seen[p] = nsp; |
|
1389 | 1388 | interesting[sp] -= 1; |
|
1390 | 1389 | if (interesting[sp] == 0 && interesting[nsp] > 0) |
|
1391 | 1390 | ninteresting -= 1; |
|
1392 | 1391 | interesting[nsp] += 1; |
|
1393 | 1392 | } |
|
1394 | 1393 | } |
|
1395 | 1394 | interesting[sv] -= 1; |
|
1396 | 1395 | if (interesting[sv] == 0) |
|
1397 | 1396 | ninteresting -= 1; |
|
1398 | 1397 | } |
|
1399 | 1398 | |
|
1400 | 1399 | final = 0; |
|
1401 | 1400 | j = ninteresting; |
|
1402 | 1401 | for (i = 0; i < (int)(2 << revcount) && j > 0; i++) { |
|
1403 | 1402 | if (interesting[i] == 0) |
|
1404 | 1403 | continue; |
|
1405 | 1404 | final |= i; |
|
1406 | 1405 | j -= 1; |
|
1407 | 1406 | } |
|
1408 | 1407 | if (final == 0) |
|
1409 | 1408 | return PyList_New(0); |
|
1410 | 1409 | |
|
1411 | 1410 | dict = PyDict_New(); |
|
1412 | 1411 | if (dict == NULL) |
|
1413 | 1412 | goto bail; |
|
1414 | 1413 | |
|
1415 | 1414 | for (i = 0; i < revcount; i++) { |
|
1416 | 1415 | PyObject *key; |
|
1417 | 1416 | |
|
1418 | 1417 | if ((final & (1 << i)) == 0) |
|
1419 | 1418 | continue; |
|
1420 | 1419 | |
|
1421 | 1420 | key = PyList_GET_ITEM(revs, i); |
|
1422 | 1421 | Py_INCREF(key); |
|
1423 | 1422 | Py_INCREF(Py_None); |
|
1424 | 1423 | if (PyDict_SetItem(dict, key, Py_None) == -1) { |
|
1425 | 1424 | Py_DECREF(key); |
|
1426 | 1425 | Py_DECREF(Py_None); |
|
1427 | 1426 | goto bail; |
|
1428 | 1427 | } |
|
1429 | 1428 | } |
|
1430 | 1429 | |
|
1431 | 1430 | keys = PyDict_Keys(dict); |
|
1432 | 1431 | |
|
1433 | 1432 | free(depth); |
|
1434 | 1433 | free(seen); |
|
1435 | 1434 | free(interesting); |
|
1436 | 1435 | Py_DECREF(dict); |
|
1437 | 1436 | |
|
1438 | 1437 | return keys; |
|
1439 | 1438 | bail: |
|
1440 | 1439 | free(depth); |
|
1441 | 1440 | free(seen); |
|
1442 | 1441 | free(interesting); |
|
1443 | 1442 | Py_XDECREF(dict); |
|
1444 | 1443 | |
|
1445 | 1444 | return NULL; |
|
1446 | 1445 | } |
|
1447 | 1446 | |
|
1448 | 1447 | /* |
|
1449 | 1448 | * Given a (possibly overlapping) set of revs, return the greatest |
|
1450 | 1449 | * common ancestors: those with the longest path to the root. |
|
1451 | 1450 | */ |
|
1452 | 1451 | static PyObject *index_ancestors(indexObject *self, PyObject *args) |
|
1453 | 1452 | { |
|
1454 | 1453 | PyObject *ret = NULL, *gca = NULL; |
|
1455 | 1454 | Py_ssize_t argcount, i, len; |
|
1456 | 1455 | bitmask repeat = 0; |
|
1457 | 1456 | int revcount = 0; |
|
1458 | 1457 | int *revs; |
|
1459 | 1458 | |
|
1460 | 1459 | argcount = PySequence_Length(args); |
|
1461 | 1460 | revs = malloc(argcount * sizeof(*revs)); |
|
1462 | 1461 | if (argcount > 0 && revs == NULL) |
|
1463 | 1462 | return PyErr_NoMemory(); |
|
1464 | 1463 | len = index_length(self) - 1; |
|
1465 | 1464 | |
|
1466 | 1465 | for (i = 0; i < argcount; i++) { |
|
1467 | 1466 | static const int capacity = 24; |
|
1468 | 1467 | PyObject *obj = PySequence_GetItem(args, i); |
|
1469 | 1468 | bitmask x; |
|
1470 | 1469 | long val; |
|
1471 | 1470 | |
|
1472 | 1471 | if (!PyInt_Check(obj)) { |
|
1473 | 1472 | PyErr_SetString(PyExc_TypeError, |
|
1474 | 1473 | "arguments must all be ints"); |
|
1475 | 1474 | goto bail; |
|
1476 | 1475 | } |
|
1477 | 1476 | val = PyInt_AsLong(obj); |
|
1478 | 1477 | if (val == -1) { |
|
1479 | 1478 | ret = PyList_New(0); |
|
1480 | 1479 | goto done; |
|
1481 | 1480 | } |
|
1482 | 1481 | if (val < 0 || val >= len) { |
|
1483 | 1482 | PyErr_SetString(PyExc_IndexError, |
|
1484 | 1483 | "index out of range"); |
|
1485 | 1484 | goto bail; |
|
1486 | 1485 | } |
|
1487 | 1486 | /* this cheesy bloom filter lets us avoid some more |
|
1488 | 1487 | * expensive duplicate checks in the common set-is-disjoint |
|
1489 | 1488 | * case */ |
|
1490 | 1489 | x = 1ull << (val & 0x3f); |
|
1491 | 1490 | if (repeat & x) { |
|
1492 | 1491 | int k; |
|
1493 | 1492 | for (k = 0; k < revcount; k++) { |
|
1494 | 1493 | if (val == revs[k]) |
|
1495 | 1494 | goto duplicate; |
|
1496 | 1495 | } |
|
1497 | 1496 | } |
|
1498 | 1497 | else repeat |= x; |
|
1499 | 1498 | if (revcount >= capacity) { |
|
1500 | 1499 | PyErr_Format(PyExc_OverflowError, |
|
1501 | 1500 | "bitset size (%d) > capacity (%d)", |
|
1502 | 1501 | revcount, capacity); |
|
1503 | 1502 | goto bail; |
|
1504 | 1503 | } |
|
1505 | 1504 | revs[revcount++] = (int)val; |
|
1506 | 1505 | duplicate:; |
|
1507 | 1506 | } |
|
1508 | 1507 | |
|
1509 | 1508 | if (revcount == 0) { |
|
1510 | 1509 | ret = PyList_New(0); |
|
1511 | 1510 | goto done; |
|
1512 | 1511 | } |
|
1513 | 1512 | if (revcount == 1) { |
|
1514 | 1513 | PyObject *obj; |
|
1515 | 1514 | ret = PyList_New(1); |
|
1516 | 1515 | if (ret == NULL) |
|
1517 | 1516 | goto bail; |
|
1518 | 1517 | obj = PyInt_FromLong(revs[0]); |
|
1519 | 1518 | if (obj == NULL) |
|
1520 | 1519 | goto bail; |
|
1521 | 1520 | PyList_SET_ITEM(ret, 0, obj); |
|
1522 | 1521 | goto done; |
|
1523 | 1522 | } |
|
1524 | 1523 | |
|
1525 | 1524 | gca = find_gca_candidates(self, revs, revcount); |
|
1526 | 1525 | if (gca == NULL) |
|
1527 | 1526 | goto bail; |
|
1528 | 1527 | |
|
1529 | 1528 | if (PyList_GET_SIZE(gca) <= 1) { |
|
1530 | 1529 | ret = gca; |
|
1531 | 1530 | Py_INCREF(gca); |
|
1532 | 1531 | } |
|
1533 | 1532 | else if (PyList_GET_SIZE(gca) == 1) { |
|
1534 | 1533 | ret = PyList_GET_ITEM(gca, 0); |
|
1535 | 1534 | Py_INCREF(ret); |
|
1536 | 1535 | } |
|
1537 | 1536 | else ret = find_deepest(self, gca); |
|
1538 | 1537 | |
|
1539 | 1538 | done: |
|
1540 | 1539 | free(revs); |
|
1541 | 1540 | Py_XDECREF(gca); |
|
1542 | 1541 | |
|
1543 | 1542 | return ret; |
|
1544 | 1543 | |
|
1545 | 1544 | bail: |
|
1546 | 1545 | free(revs); |
|
1547 | 1546 | Py_XDECREF(gca); |
|
1548 | 1547 | Py_XDECREF(ret); |
|
1549 | 1548 | return NULL; |
|
1550 | 1549 | } |
|
1551 | 1550 | |
|
1552 | 1551 | /* |
|
1553 | 1552 | * Invalidate any trie entries introduced by added revs. |
|
1554 | 1553 | */ |
|
1555 | 1554 | static void nt_invalidate_added(indexObject *self, Py_ssize_t start) |
|
1556 | 1555 | { |
|
1557 | 1556 | Py_ssize_t i, len = PyList_GET_SIZE(self->added); |
|
1558 | 1557 | |
|
1559 | 1558 | for (i = start; i < len; i++) { |
|
1560 | 1559 | PyObject *tuple = PyList_GET_ITEM(self->added, i); |
|
1561 | 1560 | PyObject *node = PyTuple_GET_ITEM(tuple, 7); |
|
1562 | 1561 | |
|
1563 | 1562 | nt_insert(self, PyString_AS_STRING(node), -1); |
|
1564 | 1563 | } |
|
1565 | 1564 | |
|
1566 | 1565 | if (start == 0) |
|
1567 | 1566 | Py_CLEAR(self->added); |
|
1568 | 1567 | } |
|
1569 | 1568 | |
|
1570 | 1569 | /* |
|
1571 | 1570 | * Delete a numeric range of revs, which must be at the end of the |
|
1572 | 1571 | * range, but exclude the sentinel nullid entry. |
|
1573 | 1572 | */ |
|
1574 | 1573 | static int index_slice_del(indexObject *self, PyObject *item) |
|
1575 | 1574 | { |
|
1576 | 1575 | Py_ssize_t start, stop, step, slicelength; |
|
1577 | 1576 | Py_ssize_t length = index_length(self); |
|
1578 | 1577 | int ret = 0; |
|
1579 | 1578 | |
|
1580 | 1579 | if (PySlice_GetIndicesEx((PySliceObject*)item, length, |
|
1581 | 1580 | &start, &stop, &step, &slicelength) < 0) |
|
1582 | 1581 | return -1; |
|
1583 | 1582 | |
|
1584 | 1583 | if (slicelength <= 0) |
|
1585 | 1584 | return 0; |
|
1586 | 1585 | |
|
1587 | 1586 | if ((step < 0 && start < stop) || (step > 0 && start > stop)) |
|
1588 | 1587 | stop = start; |
|
1589 | 1588 | |
|
1590 | 1589 | if (step < 0) { |
|
1591 | 1590 | stop = start + 1; |
|
1592 | 1591 | start = stop + step*(slicelength - 1) - 1; |
|
1593 | 1592 | step = -step; |
|
1594 | 1593 | } |
|
1595 | 1594 | |
|
1596 | 1595 | if (step != 1) { |
|
1597 | 1596 | PyErr_SetString(PyExc_ValueError, |
|
1598 | 1597 | "revlog index delete requires step size of 1"); |
|
1599 | 1598 | return -1; |
|
1600 | 1599 | } |
|
1601 | 1600 | |
|
1602 | 1601 | if (stop != length - 1) { |
|
1603 | 1602 | PyErr_SetString(PyExc_IndexError, |
|
1604 | 1603 | "revlog index deletion indices are invalid"); |
|
1605 | 1604 | return -1; |
|
1606 | 1605 | } |
|
1607 | 1606 | |
|
1608 | 1607 | if (start < self->length - 1) { |
|
1609 | 1608 | if (self->nt) { |
|
1610 | 1609 | Py_ssize_t i; |
|
1611 | 1610 | |
|
1612 | 1611 | for (i = start + 1; i < self->length - 1; i++) { |
|
1613 | 1612 | const char *node = index_node(self, i); |
|
1614 | 1613 | |
|
1615 | 1614 | if (node) |
|
1616 | 1615 | nt_insert(self, node, -1); |
|
1617 | 1616 | } |
|
1618 | 1617 | if (self->added) |
|
1619 | 1618 | nt_invalidate_added(self, 0); |
|
1620 | 1619 | if (self->ntrev > start) |
|
1621 | 1620 | self->ntrev = (int)start; |
|
1622 | 1621 | } |
|
1623 | 1622 | self->length = start + 1; |
|
1624 | 1623 | if (start < self->raw_length) { |
|
1625 | 1624 | if (self->cache) { |
|
1626 | 1625 | Py_ssize_t i; |
|
1627 | 1626 | for (i = start; i < self->raw_length; i++) |
|
1628 | 1627 | Py_CLEAR(self->cache[i]); |
|
1629 | 1628 | } |
|
1630 | 1629 | self->raw_length = start; |
|
1631 | 1630 | } |
|
1632 | 1631 | goto done; |
|
1633 | 1632 | } |
|
1634 | 1633 | |
|
1635 | 1634 | if (self->nt) { |
|
1636 | 1635 | nt_invalidate_added(self, start - self->length + 1); |
|
1637 | 1636 | if (self->ntrev > start) |
|
1638 | 1637 | self->ntrev = (int)start; |
|
1639 | 1638 | } |
|
1640 | 1639 | if (self->added) |
|
1641 | 1640 | ret = PyList_SetSlice(self->added, start - self->length + 1, |
|
1642 | 1641 | PyList_GET_SIZE(self->added), NULL); |
|
1643 | 1642 | done: |
|
1644 | 1643 | Py_CLEAR(self->headrevs); |
|
1645 | 1644 | return ret; |
|
1646 | 1645 | } |
|
1647 | 1646 | |
|
1648 | 1647 | /* |
|
1649 | 1648 | * Supported ops: |
|
1650 | 1649 | * |
|
1651 | 1650 | * slice deletion |
|
1652 | 1651 | * string assignment (extend node->rev mapping) |
|
1653 | 1652 | * string deletion (shrink node->rev mapping) |
|
1654 | 1653 | */ |
|
1655 | 1654 | static int index_assign_subscript(indexObject *self, PyObject *item, |
|
1656 | 1655 | PyObject *value) |
|
1657 | 1656 | { |
|
1658 | 1657 | char *node; |
|
1659 | 1658 | Py_ssize_t nodelen; |
|
1660 | 1659 | long rev; |
|
1661 | 1660 | |
|
1662 | 1661 | if (PySlice_Check(item) && value == NULL) |
|
1663 | 1662 | return index_slice_del(self, item); |
|
1664 | 1663 | |
|
1665 | 1664 | if (node_check(item, &node, &nodelen) == -1) |
|
1666 | 1665 | return -1; |
|
1667 | 1666 | |
|
1668 | 1667 | if (value == NULL) |
|
1669 | 1668 | return self->nt ? nt_insert(self, node, -1) : 0; |
|
1670 | 1669 | rev = PyInt_AsLong(value); |
|
1671 | 1670 | if (rev > INT_MAX || rev < 0) { |
|
1672 | 1671 | if (!PyErr_Occurred()) |
|
1673 | 1672 | PyErr_SetString(PyExc_ValueError, "rev out of range"); |
|
1674 | 1673 | return -1; |
|
1675 | 1674 | } |
|
1676 | 1675 | return nt_insert(self, node, (int)rev); |
|
1677 | 1676 | } |
|
1678 | 1677 | |
|
1679 | 1678 | /* |
|
1680 | 1679 | * Find all RevlogNG entries in an index that has inline data. Update |
|
1681 | 1680 | * the optional "offsets" table with those entries. |
|
1682 | 1681 | */ |
|
1683 | 1682 | static long inline_scan(indexObject *self, const char **offsets) |
|
1684 | 1683 | { |
|
1685 | 1684 | const char *data = PyString_AS_STRING(self->data); |
|
1686 | const char *end = data + PyString_GET_SIZE(self->data); | |
|
1685 | Py_ssize_t pos = 0; | |
|
1686 | Py_ssize_t end = PyString_GET_SIZE(self->data); | |
|
1687 | 1687 | long incr = v1_hdrsize; |
|
1688 | 1688 | Py_ssize_t len = 0; |
|
1689 | 1689 | |
|
1690 |
while ( |
|
|
1690 | while (pos + v1_hdrsize <= end && pos >= 0) { | |
|
1691 | 1691 | uint32_t comp_len; |
|
1692 | const char *old_data; | |
|
1693 | 1692 | /* 3rd element of header is length of compressed inline data */ |
|
1694 | comp_len = getbe32(data + 8); | |
|
1693 | comp_len = getbe32(data + pos + 8); | |
|
1695 | 1694 | incr = v1_hdrsize + comp_len; |
|
1696 | if (incr < v1_hdrsize) | |
|
1697 | break; | |
|
1698 | 1695 | if (offsets) |
|
1699 | offsets[len] = data; | |
|
1696 | offsets[len] = data + pos; | |
|
1700 | 1697 | len++; |
|
1701 | old_data = data; | |
|
1702 | data += incr; | |
|
1703 | if (data <= old_data) | |
|
1704 | break; | |
|
1698 | pos += incr; | |
|
1705 | 1699 | } |
|
1706 | 1700 | |
|
1707 | if (data != end && data + v1_hdrsize != end) { | |
|
1701 | if (pos != end) { | |
|
1708 | 1702 | if (!PyErr_Occurred()) |
|
1709 | 1703 | PyErr_SetString(PyExc_ValueError, "corrupt index file"); |
|
1710 | 1704 | return -1; |
|
1711 | 1705 | } |
|
1712 | 1706 | |
|
1713 | 1707 | return len; |
|
1714 | 1708 | } |
|
1715 | 1709 | |
|
1716 | 1710 | static int index_init(indexObject *self, PyObject *args) |
|
1717 | 1711 | { |
|
1718 | 1712 | PyObject *data_obj, *inlined_obj; |
|
1719 | 1713 | Py_ssize_t size; |
|
1720 | 1714 | |
|
1721 | 1715 | /* Initialize before argument-checking to avoid index_dealloc() crash. */ |
|
1722 | 1716 | self->raw_length = 0; |
|
1723 | 1717 | self->added = NULL; |
|
1724 | 1718 | self->cache = NULL; |
|
1725 | 1719 | self->data = NULL; |
|
1726 | 1720 | self->headrevs = NULL; |
|
1727 | 1721 | self->nt = NULL; |
|
1728 | 1722 | self->offsets = NULL; |
|
1729 | 1723 | |
|
1730 | 1724 | if (!PyArg_ParseTuple(args, "OO", &data_obj, &inlined_obj)) |
|
1731 | 1725 | return -1; |
|
1732 | 1726 | if (!PyString_Check(data_obj)) { |
|
1733 | 1727 | PyErr_SetString(PyExc_TypeError, "data is not a string"); |
|
1734 | 1728 | return -1; |
|
1735 | 1729 | } |
|
1736 | 1730 | size = PyString_GET_SIZE(data_obj); |
|
1737 | 1731 | |
|
1738 | 1732 | self->inlined = inlined_obj && PyObject_IsTrue(inlined_obj); |
|
1739 | 1733 | self->data = data_obj; |
|
1740 | 1734 | |
|
1741 | 1735 | self->ntlength = self->ntcapacity = 0; |
|
1742 | 1736 | self->ntdepth = self->ntsplits = 0; |
|
1743 | 1737 | self->ntlookups = self->ntmisses = 0; |
|
1744 | 1738 | self->ntrev = -1; |
|
1745 | 1739 | Py_INCREF(self->data); |
|
1746 | 1740 | |
|
1747 | 1741 | if (self->inlined) { |
|
1748 | 1742 | long len = inline_scan(self, NULL); |
|
1749 | 1743 | if (len == -1) |
|
1750 | 1744 | goto bail; |
|
1751 | 1745 | self->raw_length = len; |
|
1752 | 1746 | self->length = len + 1; |
|
1753 | 1747 | } else { |
|
1754 | 1748 | if (size % v1_hdrsize) { |
|
1755 | 1749 | PyErr_SetString(PyExc_ValueError, "corrupt index file"); |
|
1756 | 1750 | goto bail; |
|
1757 | 1751 | } |
|
1758 | 1752 | self->raw_length = size / v1_hdrsize; |
|
1759 | 1753 | self->length = self->raw_length + 1; |
|
1760 | 1754 | } |
|
1761 | 1755 | |
|
1762 | 1756 | return 0; |
|
1763 | 1757 | bail: |
|
1764 | 1758 | return -1; |
|
1765 | 1759 | } |
|
1766 | 1760 | |
|
1767 | 1761 | static PyObject *index_nodemap(indexObject *self) |
|
1768 | 1762 | { |
|
1769 | 1763 | Py_INCREF(self); |
|
1770 | 1764 | return (PyObject *)self; |
|
1771 | 1765 | } |
|
1772 | 1766 | |
|
1773 | 1767 | static void index_dealloc(indexObject *self) |
|
1774 | 1768 | { |
|
1775 | 1769 | _index_clearcaches(self); |
|
1776 | 1770 | Py_XDECREF(self->data); |
|
1777 | 1771 | Py_XDECREF(self->added); |
|
1778 | 1772 | PyObject_Del(self); |
|
1779 | 1773 | } |
|
1780 | 1774 | |
|
1781 | 1775 | static PySequenceMethods index_sequence_methods = { |
|
1782 | 1776 | (lenfunc)index_length, /* sq_length */ |
|
1783 | 1777 | 0, /* sq_concat */ |
|
1784 | 1778 | 0, /* sq_repeat */ |
|
1785 | 1779 | (ssizeargfunc)index_get, /* sq_item */ |
|
1786 | 1780 | 0, /* sq_slice */ |
|
1787 | 1781 | 0, /* sq_ass_item */ |
|
1788 | 1782 | 0, /* sq_ass_slice */ |
|
1789 | 1783 | (objobjproc)index_contains, /* sq_contains */ |
|
1790 | 1784 | }; |
|
1791 | 1785 | |
|
1792 | 1786 | static PyMappingMethods index_mapping_methods = { |
|
1793 | 1787 | (lenfunc)index_length, /* mp_length */ |
|
1794 | 1788 | (binaryfunc)index_getitem, /* mp_subscript */ |
|
1795 | 1789 | (objobjargproc)index_assign_subscript, /* mp_ass_subscript */ |
|
1796 | 1790 | }; |
|
1797 | 1791 | |
|
1798 | 1792 | static PyMethodDef index_methods[] = { |
|
1799 | 1793 | {"ancestors", (PyCFunction)index_ancestors, METH_VARARGS, |
|
1800 | 1794 | "return the gca set of the given revs"}, |
|
1801 | 1795 | {"clearcaches", (PyCFunction)index_clearcaches, METH_NOARGS, |
|
1802 | 1796 | "clear the index caches"}, |
|
1803 | 1797 | {"get", (PyCFunction)index_m_get, METH_VARARGS, |
|
1804 | 1798 | "get an index entry"}, |
|
1805 | 1799 | {"headrevs", (PyCFunction)index_headrevs, METH_NOARGS, |
|
1806 | 1800 | "get head revisions"}, |
|
1807 | 1801 | {"insert", (PyCFunction)index_insert, METH_VARARGS, |
|
1808 | 1802 | "insert an index entry"}, |
|
1809 | 1803 | {"partialmatch", (PyCFunction)index_partialmatch, METH_VARARGS, |
|
1810 | 1804 | "match a potentially ambiguous node ID"}, |
|
1811 | 1805 | {"stats", (PyCFunction)index_stats, METH_NOARGS, |
|
1812 | 1806 | "stats for the index"}, |
|
1813 | 1807 | {NULL} /* Sentinel */ |
|
1814 | 1808 | }; |
|
1815 | 1809 | |
|
1816 | 1810 | static PyGetSetDef index_getset[] = { |
|
1817 | 1811 | {"nodemap", (getter)index_nodemap, NULL, "nodemap", NULL}, |
|
1818 | 1812 | {NULL} /* Sentinel */ |
|
1819 | 1813 | }; |
|
1820 | 1814 | |
|
1821 | 1815 | static PyTypeObject indexType = { |
|
1822 | 1816 | PyObject_HEAD_INIT(NULL) |
|
1823 | 1817 | 0, /* ob_size */ |
|
1824 | 1818 | "parsers.index", /* tp_name */ |
|
1825 | 1819 | sizeof(indexObject), /* tp_basicsize */ |
|
1826 | 1820 | 0, /* tp_itemsize */ |
|
1827 | 1821 | (destructor)index_dealloc, /* tp_dealloc */ |
|
1828 | 1822 | 0, /* tp_print */ |
|
1829 | 1823 | 0, /* tp_getattr */ |
|
1830 | 1824 | 0, /* tp_setattr */ |
|
1831 | 1825 | 0, /* tp_compare */ |
|
1832 | 1826 | 0, /* tp_repr */ |
|
1833 | 1827 | 0, /* tp_as_number */ |
|
1834 | 1828 | &index_sequence_methods, /* tp_as_sequence */ |
|
1835 | 1829 | &index_mapping_methods, /* tp_as_mapping */ |
|
1836 | 1830 | 0, /* tp_hash */ |
|
1837 | 1831 | 0, /* tp_call */ |
|
1838 | 1832 | 0, /* tp_str */ |
|
1839 | 1833 | 0, /* tp_getattro */ |
|
1840 | 1834 | 0, /* tp_setattro */ |
|
1841 | 1835 | 0, /* tp_as_buffer */ |
|
1842 | 1836 | Py_TPFLAGS_DEFAULT, /* tp_flags */ |
|
1843 | 1837 | "revlog index", /* tp_doc */ |
|
1844 | 1838 | 0, /* tp_traverse */ |
|
1845 | 1839 | 0, /* tp_clear */ |
|
1846 | 1840 | 0, /* tp_richcompare */ |
|
1847 | 1841 | 0, /* tp_weaklistoffset */ |
|
1848 | 1842 | 0, /* tp_iter */ |
|
1849 | 1843 | 0, /* tp_iternext */ |
|
1850 | 1844 | index_methods, /* tp_methods */ |
|
1851 | 1845 | 0, /* tp_members */ |
|
1852 | 1846 | index_getset, /* tp_getset */ |
|
1853 | 1847 | 0, /* tp_base */ |
|
1854 | 1848 | 0, /* tp_dict */ |
|
1855 | 1849 | 0, /* tp_descr_get */ |
|
1856 | 1850 | 0, /* tp_descr_set */ |
|
1857 | 1851 | 0, /* tp_dictoffset */ |
|
1858 | 1852 | (initproc)index_init, /* tp_init */ |
|
1859 | 1853 | 0, /* tp_alloc */ |
|
1860 | 1854 | }; |
|
1861 | 1855 | |
|
1862 | 1856 | /* |
|
1863 | 1857 | * returns a tuple of the form (index, index, cache) with elements as |
|
1864 | 1858 | * follows: |
|
1865 | 1859 | * |
|
1866 | 1860 | * index: an index object that lazily parses RevlogNG records |
|
1867 | 1861 | * cache: if data is inlined, a tuple (index_file_content, 0), else None |
|
1868 | 1862 | * |
|
1869 | 1863 | * added complications are for backwards compatibility |
|
1870 | 1864 | */ |
|
1871 | 1865 | static PyObject *parse_index2(PyObject *self, PyObject *args) |
|
1872 | 1866 | { |
|
1873 | 1867 | PyObject *tuple = NULL, *cache = NULL; |
|
1874 | 1868 | indexObject *idx; |
|
1875 | 1869 | int ret; |
|
1876 | 1870 | |
|
1877 | 1871 | idx = PyObject_New(indexObject, &indexType); |
|
1878 | 1872 | if (idx == NULL) |
|
1879 | 1873 | goto bail; |
|
1880 | 1874 | |
|
1881 | 1875 | ret = index_init(idx, args); |
|
1882 | 1876 | if (ret == -1) |
|
1883 | 1877 | goto bail; |
|
1884 | 1878 | |
|
1885 | 1879 | if (idx->inlined) { |
|
1886 | 1880 | cache = Py_BuildValue("iO", 0, idx->data); |
|
1887 | 1881 | if (cache == NULL) |
|
1888 | 1882 | goto bail; |
|
1889 | 1883 | } else { |
|
1890 | 1884 | cache = Py_None; |
|
1891 | 1885 | Py_INCREF(cache); |
|
1892 | 1886 | } |
|
1893 | 1887 | |
|
1894 | 1888 | tuple = Py_BuildValue("NN", idx, cache); |
|
1895 | 1889 | if (!tuple) |
|
1896 | 1890 | goto bail; |
|
1897 | 1891 | return tuple; |
|
1898 | 1892 | |
|
1899 | 1893 | bail: |
|
1900 | 1894 | Py_XDECREF(idx); |
|
1901 | 1895 | Py_XDECREF(cache); |
|
1902 | 1896 | Py_XDECREF(tuple); |
|
1903 | 1897 | return NULL; |
|
1904 | 1898 | } |
|
1905 | 1899 | |
|
1906 | 1900 | static char parsers_doc[] = "Efficient content parsing."; |
|
1907 | 1901 | |
|
1908 | 1902 | PyObject *encodedir(PyObject *self, PyObject *args); |
|
1909 | 1903 | PyObject *pathencode(PyObject *self, PyObject *args); |
|
1910 | 1904 | PyObject *lowerencode(PyObject *self, PyObject *args); |
|
1911 | 1905 | |
|
1912 | 1906 | static PyMethodDef methods[] = { |
|
1913 | 1907 | {"pack_dirstate", pack_dirstate, METH_VARARGS, "pack a dirstate\n"}, |
|
1914 | 1908 | {"parse_manifest", parse_manifest, METH_VARARGS, "parse a manifest\n"}, |
|
1915 | 1909 | {"parse_dirstate", parse_dirstate, METH_VARARGS, "parse a dirstate\n"}, |
|
1916 | 1910 | {"parse_index2", parse_index2, METH_VARARGS, "parse a revlog index\n"}, |
|
1917 | 1911 | {"encodedir", encodedir, METH_VARARGS, "encodedir a path\n"}, |
|
1918 | 1912 | {"pathencode", pathencode, METH_VARARGS, "fncache-encode a path\n"}, |
|
1919 | 1913 | {"lowerencode", lowerencode, METH_VARARGS, "lower-encode a path\n"}, |
|
1920 | 1914 | {NULL, NULL} |
|
1921 | 1915 | }; |
|
1922 | 1916 | |
|
1923 | 1917 | void dirs_module_init(PyObject *mod); |
|
1924 | 1918 | |
|
1925 | 1919 | static void module_init(PyObject *mod) |
|
1926 | 1920 | { |
|
1927 | 1921 | dirs_module_init(mod); |
|
1928 | 1922 | |
|
1929 | 1923 | indexType.tp_new = PyType_GenericNew; |
|
1930 | 1924 | if (PyType_Ready(&indexType) < 0) |
|
1931 | 1925 | return; |
|
1932 | 1926 | Py_INCREF(&indexType); |
|
1933 | 1927 | |
|
1934 | 1928 | PyModule_AddObject(mod, "index", (PyObject *)&indexType); |
|
1935 | 1929 | |
|
1936 | 1930 | nullentry = Py_BuildValue("iiiiiiis#", 0, 0, 0, |
|
1937 | 1931 | -1, -1, -1, -1, nullid, 20); |
|
1938 | 1932 | if (nullentry) |
|
1939 | 1933 | PyObject_GC_UnTrack(nullentry); |
|
1940 | 1934 | |
|
1941 | 1935 | dirstate_unset = Py_BuildValue("ciii", 'n', 0, -1, -1); |
|
1942 | 1936 | } |
|
1943 | 1937 | |
|
1944 | 1938 | #ifdef IS_PY3K |
|
1945 | 1939 | static struct PyModuleDef parsers_module = { |
|
1946 | 1940 | PyModuleDef_HEAD_INIT, |
|
1947 | 1941 | "parsers", |
|
1948 | 1942 | parsers_doc, |
|
1949 | 1943 | -1, |
|
1950 | 1944 | methods |
|
1951 | 1945 | }; |
|
1952 | 1946 | |
|
1953 | 1947 | PyMODINIT_FUNC PyInit_parsers(void) |
|
1954 | 1948 | { |
|
1955 | 1949 | PyObject *mod = PyModule_Create(&parsers_module); |
|
1956 | 1950 | module_init(mod); |
|
1957 | 1951 | return mod; |
|
1958 | 1952 | } |
|
1959 | 1953 | #else |
|
1960 | 1954 | PyMODINIT_FUNC initparsers(void) |
|
1961 | 1955 | { |
|
1962 | 1956 | PyObject *mod = Py_InitModule3("parsers", methods, parsers_doc); |
|
1963 | 1957 | module_init(mod); |
|
1964 | 1958 | } |
|
1965 | 1959 | #endif |
General Comments 0
You need to be logged in to leave comments.
Login now