Show More
@@ -1,636 +1,640 b'' | |||||
1 | # vfs.py - Mercurial 'vfs' classes |
|
1 | # vfs.py - Mercurial 'vfs' classes | |
2 | # |
|
2 | # | |
3 | # Copyright Matt Mackall <mpm@selenic.com> |
|
3 | # Copyright Matt Mackall <mpm@selenic.com> | |
4 | # |
|
4 | # | |
5 | # This software may be used and distributed according to the terms of the |
|
5 | # This software may be used and distributed according to the terms of the | |
6 | # GNU General Public License version 2 or any later version. |
|
6 | # GNU General Public License version 2 or any later version. | |
7 | from __future__ import absolute_import |
|
7 | from __future__ import absolute_import | |
8 |
|
8 | |||
9 | import contextlib |
|
9 | import contextlib | |
10 | import errno |
|
10 | import errno | |
11 | import os |
|
11 | import os | |
12 | import shutil |
|
12 | import shutil | |
13 | import stat |
|
13 | import stat | |
14 | import tempfile |
|
14 | import tempfile | |
15 | import threading |
|
15 | import threading | |
16 |
|
16 | |||
17 | from .i18n import _ |
|
17 | from .i18n import _ | |
18 | from . import ( |
|
18 | from . import ( | |
19 | error, |
|
19 | error, | |
20 | osutil, |
|
20 | osutil, | |
21 | pathutil, |
|
21 | pathutil, | |
22 | pycompat, |
|
22 | pycompat, | |
23 | util, |
|
23 | util, | |
24 | ) |
|
24 | ) | |
25 |
|
25 | |||
26 | class abstractvfs(object): |
|
26 | class abstractvfs(object): | |
27 | """Abstract base class; cannot be instantiated""" |
|
27 | """Abstract base class; cannot be instantiated""" | |
28 |
|
28 | |||
29 | def __init__(self, *args, **kwargs): |
|
29 | def __init__(self, *args, **kwargs): | |
30 | '''Prevent instantiation; don't call this from subclasses.''' |
|
30 | '''Prevent instantiation; don't call this from subclasses.''' | |
31 | raise NotImplementedError('attempted instantiating ' + str(type(self))) |
|
31 | raise NotImplementedError('attempted instantiating ' + str(type(self))) | |
32 |
|
32 | |||
33 | def tryread(self, path): |
|
33 | def tryread(self, path): | |
34 | '''gracefully return an empty string for missing files''' |
|
34 | '''gracefully return an empty string for missing files''' | |
35 | try: |
|
35 | try: | |
36 | return self.read(path) |
|
36 | return self.read(path) | |
37 | except IOError as inst: |
|
37 | except IOError as inst: | |
38 | if inst.errno != errno.ENOENT: |
|
38 | if inst.errno != errno.ENOENT: | |
39 | raise |
|
39 | raise | |
40 | return "" |
|
40 | return "" | |
41 |
|
41 | |||
42 | def tryreadlines(self, path, mode='rb'): |
|
42 | def tryreadlines(self, path, mode='rb'): | |
43 | '''gracefully return an empty array for missing files''' |
|
43 | '''gracefully return an empty array for missing files''' | |
44 | try: |
|
44 | try: | |
45 | return self.readlines(path, mode=mode) |
|
45 | return self.readlines(path, mode=mode) | |
46 | except IOError as inst: |
|
46 | except IOError as inst: | |
47 | if inst.errno != errno.ENOENT: |
|
47 | if inst.errno != errno.ENOENT: | |
48 | raise |
|
48 | raise | |
49 | return [] |
|
49 | return [] | |
50 |
|
50 | |||
51 | @util.propertycache |
|
51 | @util.propertycache | |
52 | def open(self): |
|
52 | def open(self): | |
53 | '''Open ``path`` file, which is relative to vfs root. |
|
53 | '''Open ``path`` file, which is relative to vfs root. | |
54 |
|
54 | |||
55 | Newly created directories are marked as "not to be indexed by |
|
55 | Newly created directories are marked as "not to be indexed by | |
56 | the content indexing service", if ``notindexed`` is specified |
|
56 | the content indexing service", if ``notindexed`` is specified | |
57 | for "write" mode access. |
|
57 | for "write" mode access. | |
58 | ''' |
|
58 | ''' | |
59 | return self.__call__ |
|
59 | return self.__call__ | |
60 |
|
60 | |||
61 | def read(self, path): |
|
61 | def read(self, path): | |
62 | with self(path, 'rb') as fp: |
|
62 | with self(path, 'rb') as fp: | |
63 | return fp.read() |
|
63 | return fp.read() | |
64 |
|
64 | |||
65 | def readlines(self, path, mode='rb'): |
|
65 | def readlines(self, path, mode='rb'): | |
66 | with self(path, mode=mode) as fp: |
|
66 | with self(path, mode=mode) as fp: | |
67 | return fp.readlines() |
|
67 | return fp.readlines() | |
68 |
|
68 | |||
69 | def write(self, path, data, backgroundclose=False): |
|
69 | def write(self, path, data, backgroundclose=False): | |
70 | with self(path, 'wb', backgroundclose=backgroundclose) as fp: |
|
70 | with self(path, 'wb', backgroundclose=backgroundclose) as fp: | |
71 | return fp.write(data) |
|
71 | return fp.write(data) | |
72 |
|
72 | |||
73 | def writelines(self, path, data, mode='wb', notindexed=False): |
|
73 | def writelines(self, path, data, mode='wb', notindexed=False): | |
74 | with self(path, mode=mode, notindexed=notindexed) as fp: |
|
74 | with self(path, mode=mode, notindexed=notindexed) as fp: | |
75 | return fp.writelines(data) |
|
75 | return fp.writelines(data) | |
76 |
|
76 | |||
77 | def append(self, path, data): |
|
77 | def append(self, path, data): | |
78 | with self(path, 'ab') as fp: |
|
78 | with self(path, 'ab') as fp: | |
79 | return fp.write(data) |
|
79 | return fp.write(data) | |
80 |
|
80 | |||
81 | def basename(self, path): |
|
81 | def basename(self, path): | |
82 | """return base element of a path (as os.path.basename would do) |
|
82 | """return base element of a path (as os.path.basename would do) | |
83 |
|
83 | |||
84 | This exists to allow handling of strange encoding if needed.""" |
|
84 | This exists to allow handling of strange encoding if needed.""" | |
85 | return os.path.basename(path) |
|
85 | return os.path.basename(path) | |
86 |
|
86 | |||
87 | def chmod(self, path, mode): |
|
87 | def chmod(self, path, mode): | |
88 | return os.chmod(self.join(path), mode) |
|
88 | return os.chmod(self.join(path), mode) | |
89 |
|
89 | |||
90 | def dirname(self, path): |
|
90 | def dirname(self, path): | |
91 | """return dirname element of a path (as os.path.dirname would do) |
|
91 | """return dirname element of a path (as os.path.dirname would do) | |
92 |
|
92 | |||
93 | This exists to allow handling of strange encoding if needed.""" |
|
93 | This exists to allow handling of strange encoding if needed.""" | |
94 | return os.path.dirname(path) |
|
94 | return os.path.dirname(path) | |
95 |
|
95 | |||
96 | def exists(self, path=None): |
|
96 | def exists(self, path=None): | |
97 | return os.path.exists(self.join(path)) |
|
97 | return os.path.exists(self.join(path)) | |
98 |
|
98 | |||
99 | def fstat(self, fp): |
|
99 | def fstat(self, fp): | |
100 | return util.fstat(fp) |
|
100 | return util.fstat(fp) | |
101 |
|
101 | |||
102 | def isdir(self, path=None): |
|
102 | def isdir(self, path=None): | |
103 | return os.path.isdir(self.join(path)) |
|
103 | return os.path.isdir(self.join(path)) | |
104 |
|
104 | |||
105 | def isfile(self, path=None): |
|
105 | def isfile(self, path=None): | |
106 | return os.path.isfile(self.join(path)) |
|
106 | return os.path.isfile(self.join(path)) | |
107 |
|
107 | |||
108 | def islink(self, path=None): |
|
108 | def islink(self, path=None): | |
109 | return os.path.islink(self.join(path)) |
|
109 | return os.path.islink(self.join(path)) | |
110 |
|
110 | |||
111 | def isfileorlink(self, path=None): |
|
111 | def isfileorlink(self, path=None): | |
112 | '''return whether path is a regular file or a symlink |
|
112 | '''return whether path is a regular file or a symlink | |
113 |
|
113 | |||
114 | Unlike isfile, this doesn't follow symlinks.''' |
|
114 | Unlike isfile, this doesn't follow symlinks.''' | |
115 | try: |
|
115 | try: | |
116 | st = self.lstat(path) |
|
116 | st = self.lstat(path) | |
117 | except OSError: |
|
117 | except OSError: | |
118 | return False |
|
118 | return False | |
119 | mode = st.st_mode |
|
119 | mode = st.st_mode | |
120 | return stat.S_ISREG(mode) or stat.S_ISLNK(mode) |
|
120 | return stat.S_ISREG(mode) or stat.S_ISLNK(mode) | |
121 |
|
121 | |||
122 | def reljoin(self, *paths): |
|
122 | def reljoin(self, *paths): | |
123 | """join various elements of a path together (as os.path.join would do) |
|
123 | """join various elements of a path together (as os.path.join would do) | |
124 |
|
124 | |||
125 | The vfs base is not injected so that path stay relative. This exists |
|
125 | The vfs base is not injected so that path stay relative. This exists | |
126 | to allow handling of strange encoding if needed.""" |
|
126 | to allow handling of strange encoding if needed.""" | |
127 | return os.path.join(*paths) |
|
127 | return os.path.join(*paths) | |
128 |
|
128 | |||
129 | def split(self, path): |
|
129 | def split(self, path): | |
130 | """split top-most element of a path (as os.path.split would do) |
|
130 | """split top-most element of a path (as os.path.split would do) | |
131 |
|
131 | |||
132 | This exists to allow handling of strange encoding if needed.""" |
|
132 | This exists to allow handling of strange encoding if needed.""" | |
133 | return os.path.split(path) |
|
133 | return os.path.split(path) | |
134 |
|
134 | |||
135 | def lexists(self, path=None): |
|
135 | def lexists(self, path=None): | |
136 | return os.path.lexists(self.join(path)) |
|
136 | return os.path.lexists(self.join(path)) | |
137 |
|
137 | |||
138 | def lstat(self, path=None): |
|
138 | def lstat(self, path=None): | |
139 | return os.lstat(self.join(path)) |
|
139 | return os.lstat(self.join(path)) | |
140 |
|
140 | |||
141 | def listdir(self, path=None): |
|
141 | def listdir(self, path=None): | |
142 | return os.listdir(self.join(path)) |
|
142 | return os.listdir(self.join(path)) | |
143 |
|
143 | |||
144 | def makedir(self, path=None, notindexed=True): |
|
144 | def makedir(self, path=None, notindexed=True): | |
145 | return util.makedir(self.join(path), notindexed) |
|
145 | return util.makedir(self.join(path), notindexed) | |
146 |
|
146 | |||
147 | def makedirs(self, path=None, mode=None): |
|
147 | def makedirs(self, path=None, mode=None): | |
148 | return util.makedirs(self.join(path), mode) |
|
148 | return util.makedirs(self.join(path), mode) | |
149 |
|
149 | |||
150 | def makelock(self, info, path): |
|
150 | def makelock(self, info, path): | |
151 | return util.makelock(info, self.join(path)) |
|
151 | return util.makelock(info, self.join(path)) | |
152 |
|
152 | |||
153 | def mkdir(self, path=None): |
|
153 | def mkdir(self, path=None): | |
154 | return os.mkdir(self.join(path)) |
|
154 | return os.mkdir(self.join(path)) | |
155 |
|
155 | |||
156 | def mkstemp(self, suffix='', prefix='tmp', dir=None, text=False): |
|
156 | def mkstemp(self, suffix='', prefix='tmp', dir=None, text=False): | |
157 | fd, name = tempfile.mkstemp(suffix=suffix, prefix=prefix, |
|
157 | fd, name = tempfile.mkstemp(suffix=suffix, prefix=prefix, | |
158 | dir=self.join(dir), text=text) |
|
158 | dir=self.join(dir), text=text) | |
159 | dname, fname = util.split(name) |
|
159 | dname, fname = util.split(name) | |
160 | if dir: |
|
160 | if dir: | |
161 | return fd, os.path.join(dir, fname) |
|
161 | return fd, os.path.join(dir, fname) | |
162 | else: |
|
162 | else: | |
163 | return fd, fname |
|
163 | return fd, fname | |
164 |
|
164 | |||
165 | def readdir(self, path=None, stat=None, skip=None): |
|
165 | def readdir(self, path=None, stat=None, skip=None): | |
166 | return osutil.listdir(self.join(path), stat, skip) |
|
166 | return osutil.listdir(self.join(path), stat, skip) | |
167 |
|
167 | |||
168 | def readlock(self, path): |
|
168 | def readlock(self, path): | |
169 | return util.readlock(self.join(path)) |
|
169 | return util.readlock(self.join(path)) | |
170 |
|
170 | |||
171 | def rename(self, src, dst, checkambig=False): |
|
171 | def rename(self, src, dst, checkambig=False): | |
172 | """Rename from src to dst |
|
172 | """Rename from src to dst | |
173 |
|
173 | |||
174 | checkambig argument is used with util.filestat, and is useful |
|
174 | checkambig argument is used with util.filestat, and is useful | |
175 | only if destination file is guarded by any lock |
|
175 | only if destination file is guarded by any lock | |
176 | (e.g. repo.lock or repo.wlock). |
|
176 | (e.g. repo.lock or repo.wlock). | |
177 | """ |
|
177 | """ | |
178 | dstpath = self.join(dst) |
|
178 | dstpath = self.join(dst) | |
179 | oldstat = checkambig and util.filestat(dstpath) |
|
179 | oldstat = checkambig and util.filestat(dstpath) | |
180 | if oldstat and oldstat.stat: |
|
180 | if oldstat and oldstat.stat: | |
181 | ret = util.rename(self.join(src), dstpath) |
|
181 | ret = util.rename(self.join(src), dstpath) | |
182 | newstat = util.filestat(dstpath) |
|
182 | newstat = util.filestat(dstpath) | |
183 | if newstat.isambig(oldstat): |
|
183 | if newstat.isambig(oldstat): | |
184 | # stat of renamed file is ambiguous to original one |
|
184 | # stat of renamed file is ambiguous to original one | |
185 | newstat.avoidambig(dstpath, oldstat) |
|
185 | newstat.avoidambig(dstpath, oldstat) | |
186 | return ret |
|
186 | return ret | |
187 | return util.rename(self.join(src), dstpath) |
|
187 | return util.rename(self.join(src), dstpath) | |
188 |
|
188 | |||
189 | def readlink(self, path): |
|
189 | def readlink(self, path): | |
190 | return os.readlink(self.join(path)) |
|
190 | return os.readlink(self.join(path)) | |
191 |
|
191 | |||
192 | def removedirs(self, path=None): |
|
192 | def removedirs(self, path=None): | |
193 | """Remove a leaf directory and all empty intermediate ones |
|
193 | """Remove a leaf directory and all empty intermediate ones | |
194 | """ |
|
194 | """ | |
195 | return util.removedirs(self.join(path)) |
|
195 | return util.removedirs(self.join(path)) | |
196 |
|
196 | |||
197 | def rmtree(self, path=None, ignore_errors=False, forcibly=False): |
|
197 | def rmtree(self, path=None, ignore_errors=False, forcibly=False): | |
198 | """Remove a directory tree recursively |
|
198 | """Remove a directory tree recursively | |
199 |
|
199 | |||
200 | If ``forcibly``, this tries to remove READ-ONLY files, too. |
|
200 | If ``forcibly``, this tries to remove READ-ONLY files, too. | |
201 | """ |
|
201 | """ | |
202 | if forcibly: |
|
202 | if forcibly: | |
203 | def onerror(function, path, excinfo): |
|
203 | def onerror(function, path, excinfo): | |
204 | if function is not os.remove: |
|
204 | if function is not os.remove: | |
205 | raise |
|
205 | raise | |
206 | # read-only files cannot be unlinked under Windows |
|
206 | # read-only files cannot be unlinked under Windows | |
207 | s = os.stat(path) |
|
207 | s = os.stat(path) | |
208 | if (s.st_mode & stat.S_IWRITE) != 0: |
|
208 | if (s.st_mode & stat.S_IWRITE) != 0: | |
209 | raise |
|
209 | raise | |
210 | os.chmod(path, stat.S_IMODE(s.st_mode) | stat.S_IWRITE) |
|
210 | os.chmod(path, stat.S_IMODE(s.st_mode) | stat.S_IWRITE) | |
211 | os.remove(path) |
|
211 | os.remove(path) | |
212 | else: |
|
212 | else: | |
213 | onerror = None |
|
213 | onerror = None | |
214 | return shutil.rmtree(self.join(path), |
|
214 | return shutil.rmtree(self.join(path), | |
215 | ignore_errors=ignore_errors, onerror=onerror) |
|
215 | ignore_errors=ignore_errors, onerror=onerror) | |
216 |
|
216 | |||
217 | def setflags(self, path, l, x): |
|
217 | def setflags(self, path, l, x): | |
218 | return util.setflags(self.join(path), l, x) |
|
218 | return util.setflags(self.join(path), l, x) | |
219 |
|
219 | |||
220 | def stat(self, path=None): |
|
220 | def stat(self, path=None): | |
221 | return os.stat(self.join(path)) |
|
221 | return os.stat(self.join(path)) | |
222 |
|
222 | |||
223 | def unlink(self, path=None): |
|
223 | def unlink(self, path=None): | |
224 | return util.unlink(self.join(path)) |
|
224 | return util.unlink(self.join(path)) | |
225 |
|
225 | |||
|
226 | def tryunlink(self, path=None): | |||
|
227 | """Attempt to remove a file, ignoring missing file errors.""" | |||
|
228 | util.tryunlink(self.join(path)) | |||
|
229 | ||||
226 | def unlinkpath(self, path=None, ignoremissing=False): |
|
230 | def unlinkpath(self, path=None, ignoremissing=False): | |
227 | return util.unlinkpath(self.join(path), ignoremissing=ignoremissing) |
|
231 | return util.unlinkpath(self.join(path), ignoremissing=ignoremissing) | |
228 |
|
232 | |||
229 | def utime(self, path=None, t=None): |
|
233 | def utime(self, path=None, t=None): | |
230 | return os.utime(self.join(path), t) |
|
234 | return os.utime(self.join(path), t) | |
231 |
|
235 | |||
232 | def walk(self, path=None, onerror=None): |
|
236 | def walk(self, path=None, onerror=None): | |
233 | """Yield (dirpath, dirs, files) tuple for each directories under path |
|
237 | """Yield (dirpath, dirs, files) tuple for each directories under path | |
234 |
|
238 | |||
235 | ``dirpath`` is relative one from the root of this vfs. This |
|
239 | ``dirpath`` is relative one from the root of this vfs. This | |
236 | uses ``os.sep`` as path separator, even you specify POSIX |
|
240 | uses ``os.sep`` as path separator, even you specify POSIX | |
237 | style ``path``. |
|
241 | style ``path``. | |
238 |
|
242 | |||
239 | "The root of this vfs" is represented as empty ``dirpath``. |
|
243 | "The root of this vfs" is represented as empty ``dirpath``. | |
240 | """ |
|
244 | """ | |
241 | root = os.path.normpath(self.join(None)) |
|
245 | root = os.path.normpath(self.join(None)) | |
242 | # when dirpath == root, dirpath[prefixlen:] becomes empty |
|
246 | # when dirpath == root, dirpath[prefixlen:] becomes empty | |
243 | # because len(dirpath) < prefixlen. |
|
247 | # because len(dirpath) < prefixlen. | |
244 | prefixlen = len(pathutil.normasprefix(root)) |
|
248 | prefixlen = len(pathutil.normasprefix(root)) | |
245 | for dirpath, dirs, files in os.walk(self.join(path), onerror=onerror): |
|
249 | for dirpath, dirs, files in os.walk(self.join(path), onerror=onerror): | |
246 | yield (dirpath[prefixlen:], dirs, files) |
|
250 | yield (dirpath[prefixlen:], dirs, files) | |
247 |
|
251 | |||
248 | @contextlib.contextmanager |
|
252 | @contextlib.contextmanager | |
249 | def backgroundclosing(self, ui, expectedcount=-1): |
|
253 | def backgroundclosing(self, ui, expectedcount=-1): | |
250 | """Allow files to be closed asynchronously. |
|
254 | """Allow files to be closed asynchronously. | |
251 |
|
255 | |||
252 | When this context manager is active, ``backgroundclose`` can be passed |
|
256 | When this context manager is active, ``backgroundclose`` can be passed | |
253 | to ``__call__``/``open`` to result in the file possibly being closed |
|
257 | to ``__call__``/``open`` to result in the file possibly being closed | |
254 | asynchronously, on a background thread. |
|
258 | asynchronously, on a background thread. | |
255 | """ |
|
259 | """ | |
256 | # This is an arbitrary restriction and could be changed if we ever |
|
260 | # This is an arbitrary restriction and could be changed if we ever | |
257 | # have a use case. |
|
261 | # have a use case. | |
258 | vfs = getattr(self, 'vfs', self) |
|
262 | vfs = getattr(self, 'vfs', self) | |
259 | if getattr(vfs, '_backgroundfilecloser', None): |
|
263 | if getattr(vfs, '_backgroundfilecloser', None): | |
260 | raise error.Abort( |
|
264 | raise error.Abort( | |
261 | _('can only have 1 active background file closer')) |
|
265 | _('can only have 1 active background file closer')) | |
262 |
|
266 | |||
263 | with backgroundfilecloser(ui, expectedcount=expectedcount) as bfc: |
|
267 | with backgroundfilecloser(ui, expectedcount=expectedcount) as bfc: | |
264 | try: |
|
268 | try: | |
265 | vfs._backgroundfilecloser = bfc |
|
269 | vfs._backgroundfilecloser = bfc | |
266 | yield bfc |
|
270 | yield bfc | |
267 | finally: |
|
271 | finally: | |
268 | vfs._backgroundfilecloser = None |
|
272 | vfs._backgroundfilecloser = None | |
269 |
|
273 | |||
270 | class vfs(abstractvfs): |
|
274 | class vfs(abstractvfs): | |
271 | '''Operate files relative to a base directory |
|
275 | '''Operate files relative to a base directory | |
272 |
|
276 | |||
273 | This class is used to hide the details of COW semantics and |
|
277 | This class is used to hide the details of COW semantics and | |
274 | remote file access from higher level code. |
|
278 | remote file access from higher level code. | |
275 | ''' |
|
279 | ''' | |
276 | def __init__(self, base, audit=True, expandpath=False, realpath=False): |
|
280 | def __init__(self, base, audit=True, expandpath=False, realpath=False): | |
277 | if expandpath: |
|
281 | if expandpath: | |
278 | base = util.expandpath(base) |
|
282 | base = util.expandpath(base) | |
279 | if realpath: |
|
283 | if realpath: | |
280 | base = os.path.realpath(base) |
|
284 | base = os.path.realpath(base) | |
281 | self.base = base |
|
285 | self.base = base | |
282 | self.mustaudit = audit |
|
286 | self.mustaudit = audit | |
283 | self.createmode = None |
|
287 | self.createmode = None | |
284 | self._trustnlink = None |
|
288 | self._trustnlink = None | |
285 |
|
289 | |||
286 | @property |
|
290 | @property | |
287 | def mustaudit(self): |
|
291 | def mustaudit(self): | |
288 | return self._audit |
|
292 | return self._audit | |
289 |
|
293 | |||
290 | @mustaudit.setter |
|
294 | @mustaudit.setter | |
291 | def mustaudit(self, onoff): |
|
295 | def mustaudit(self, onoff): | |
292 | self._audit = onoff |
|
296 | self._audit = onoff | |
293 | if onoff: |
|
297 | if onoff: | |
294 | self.audit = pathutil.pathauditor(self.base) |
|
298 | self.audit = pathutil.pathauditor(self.base) | |
295 | else: |
|
299 | else: | |
296 | self.audit = util.always |
|
300 | self.audit = util.always | |
297 |
|
301 | |||
298 | @util.propertycache |
|
302 | @util.propertycache | |
299 | def _cansymlink(self): |
|
303 | def _cansymlink(self): | |
300 | return util.checklink(self.base) |
|
304 | return util.checklink(self.base) | |
301 |
|
305 | |||
302 | @util.propertycache |
|
306 | @util.propertycache | |
303 | def _chmod(self): |
|
307 | def _chmod(self): | |
304 | return util.checkexec(self.base) |
|
308 | return util.checkexec(self.base) | |
305 |
|
309 | |||
306 | def _fixfilemode(self, name): |
|
310 | def _fixfilemode(self, name): | |
307 | if self.createmode is None or not self._chmod: |
|
311 | if self.createmode is None or not self._chmod: | |
308 | return |
|
312 | return | |
309 | os.chmod(name, self.createmode & 0o666) |
|
313 | os.chmod(name, self.createmode & 0o666) | |
310 |
|
314 | |||
311 | def __call__(self, path, mode="r", text=False, atomictemp=False, |
|
315 | def __call__(self, path, mode="r", text=False, atomictemp=False, | |
312 | notindexed=False, backgroundclose=False, checkambig=False): |
|
316 | notindexed=False, backgroundclose=False, checkambig=False): | |
313 | '''Open ``path`` file, which is relative to vfs root. |
|
317 | '''Open ``path`` file, which is relative to vfs root. | |
314 |
|
318 | |||
315 | Newly created directories are marked as "not to be indexed by |
|
319 | Newly created directories are marked as "not to be indexed by | |
316 | the content indexing service", if ``notindexed`` is specified |
|
320 | the content indexing service", if ``notindexed`` is specified | |
317 | for "write" mode access. |
|
321 | for "write" mode access. | |
318 |
|
322 | |||
319 | If ``backgroundclose`` is passed, the file may be closed asynchronously. |
|
323 | If ``backgroundclose`` is passed, the file may be closed asynchronously. | |
320 | It can only be used if the ``self.backgroundclosing()`` context manager |
|
324 | It can only be used if the ``self.backgroundclosing()`` context manager | |
321 | is active. This should only be specified if the following criteria hold: |
|
325 | is active. This should only be specified if the following criteria hold: | |
322 |
|
326 | |||
323 | 1. There is a potential for writing thousands of files. Unless you |
|
327 | 1. There is a potential for writing thousands of files. Unless you | |
324 | are writing thousands of files, the performance benefits of |
|
328 | are writing thousands of files, the performance benefits of | |
325 | asynchronously closing files is not realized. |
|
329 | asynchronously closing files is not realized. | |
326 | 2. Files are opened exactly once for the ``backgroundclosing`` |
|
330 | 2. Files are opened exactly once for the ``backgroundclosing`` | |
327 | active duration and are therefore free of race conditions between |
|
331 | active duration and are therefore free of race conditions between | |
328 | closing a file on a background thread and reopening it. (If the |
|
332 | closing a file on a background thread and reopening it. (If the | |
329 | file were opened multiple times, there could be unflushed data |
|
333 | file were opened multiple times, there could be unflushed data | |
330 | because the original file handle hasn't been flushed/closed yet.) |
|
334 | because the original file handle hasn't been flushed/closed yet.) | |
331 |
|
335 | |||
332 | ``checkambig`` argument is passed to atomictemplfile (valid |
|
336 | ``checkambig`` argument is passed to atomictemplfile (valid | |
333 | only for writing), and is useful only if target file is |
|
337 | only for writing), and is useful only if target file is | |
334 | guarded by any lock (e.g. repo.lock or repo.wlock). |
|
338 | guarded by any lock (e.g. repo.lock or repo.wlock). | |
335 | ''' |
|
339 | ''' | |
336 | if self._audit: |
|
340 | if self._audit: | |
337 | r = util.checkosfilename(path) |
|
341 | r = util.checkosfilename(path) | |
338 | if r: |
|
342 | if r: | |
339 | raise error.Abort("%s: %r" % (r, path)) |
|
343 | raise error.Abort("%s: %r" % (r, path)) | |
340 | self.audit(path) |
|
344 | self.audit(path) | |
341 | f = self.join(path) |
|
345 | f = self.join(path) | |
342 |
|
346 | |||
343 | if not text and "b" not in mode: |
|
347 | if not text and "b" not in mode: | |
344 | mode += "b" # for that other OS |
|
348 | mode += "b" # for that other OS | |
345 |
|
349 | |||
346 | nlink = -1 |
|
350 | nlink = -1 | |
347 | if mode not in ('r', 'rb'): |
|
351 | if mode not in ('r', 'rb'): | |
348 | dirname, basename = util.split(f) |
|
352 | dirname, basename = util.split(f) | |
349 | # If basename is empty, then the path is malformed because it points |
|
353 | # If basename is empty, then the path is malformed because it points | |
350 | # to a directory. Let the posixfile() call below raise IOError. |
|
354 | # to a directory. Let the posixfile() call below raise IOError. | |
351 | if basename: |
|
355 | if basename: | |
352 | if atomictemp: |
|
356 | if atomictemp: | |
353 | util.makedirs(dirname, self.createmode, notindexed) |
|
357 | util.makedirs(dirname, self.createmode, notindexed) | |
354 | return util.atomictempfile(f, mode, self.createmode, |
|
358 | return util.atomictempfile(f, mode, self.createmode, | |
355 | checkambig=checkambig) |
|
359 | checkambig=checkambig) | |
356 | try: |
|
360 | try: | |
357 | if 'w' in mode: |
|
361 | if 'w' in mode: | |
358 | util.unlink(f) |
|
362 | util.unlink(f) | |
359 | nlink = 0 |
|
363 | nlink = 0 | |
360 | else: |
|
364 | else: | |
361 | # nlinks() may behave differently for files on Windows |
|
365 | # nlinks() may behave differently for files on Windows | |
362 | # shares if the file is open. |
|
366 | # shares if the file is open. | |
363 | with util.posixfile(f): |
|
367 | with util.posixfile(f): | |
364 | nlink = util.nlinks(f) |
|
368 | nlink = util.nlinks(f) | |
365 | if nlink < 1: |
|
369 | if nlink < 1: | |
366 | nlink = 2 # force mktempcopy (issue1922) |
|
370 | nlink = 2 # force mktempcopy (issue1922) | |
367 | except (OSError, IOError) as e: |
|
371 | except (OSError, IOError) as e: | |
368 | if e.errno != errno.ENOENT: |
|
372 | if e.errno != errno.ENOENT: | |
369 | raise |
|
373 | raise | |
370 | nlink = 0 |
|
374 | nlink = 0 | |
371 | util.makedirs(dirname, self.createmode, notindexed) |
|
375 | util.makedirs(dirname, self.createmode, notindexed) | |
372 | if nlink > 0: |
|
376 | if nlink > 0: | |
373 | if self._trustnlink is None: |
|
377 | if self._trustnlink is None: | |
374 | self._trustnlink = nlink > 1 or util.checknlink(f) |
|
378 | self._trustnlink = nlink > 1 or util.checknlink(f) | |
375 | if nlink > 1 or not self._trustnlink: |
|
379 | if nlink > 1 or not self._trustnlink: | |
376 | util.rename(util.mktempcopy(f), f) |
|
380 | util.rename(util.mktempcopy(f), f) | |
377 | fp = util.posixfile(f, mode) |
|
381 | fp = util.posixfile(f, mode) | |
378 | if nlink == 0: |
|
382 | if nlink == 0: | |
379 | self._fixfilemode(f) |
|
383 | self._fixfilemode(f) | |
380 |
|
384 | |||
381 | if checkambig: |
|
385 | if checkambig: | |
382 | if mode in ('r', 'rb'): |
|
386 | if mode in ('r', 'rb'): | |
383 | raise error.Abort(_('implementation error: mode %s is not' |
|
387 | raise error.Abort(_('implementation error: mode %s is not' | |
384 | ' valid for checkambig=True') % mode) |
|
388 | ' valid for checkambig=True') % mode) | |
385 | fp = checkambigatclosing(fp) |
|
389 | fp = checkambigatclosing(fp) | |
386 |
|
390 | |||
387 | if backgroundclose: |
|
391 | if backgroundclose: | |
388 | if not self._backgroundfilecloser: |
|
392 | if not self._backgroundfilecloser: | |
389 | raise error.Abort(_('backgroundclose can only be used when a ' |
|
393 | raise error.Abort(_('backgroundclose can only be used when a ' | |
390 | 'backgroundclosing context manager is active') |
|
394 | 'backgroundclosing context manager is active') | |
391 | ) |
|
395 | ) | |
392 |
|
396 | |||
393 | fp = delayclosedfile(fp, self._backgroundfilecloser) |
|
397 | fp = delayclosedfile(fp, self._backgroundfilecloser) | |
394 |
|
398 | |||
395 | return fp |
|
399 | return fp | |
396 |
|
400 | |||
397 | def symlink(self, src, dst): |
|
401 | def symlink(self, src, dst): | |
398 | self.audit(dst) |
|
402 | self.audit(dst) | |
399 | linkname = self.join(dst) |
|
403 | linkname = self.join(dst) | |
400 | try: |
|
404 | try: | |
401 | os.unlink(linkname) |
|
405 | os.unlink(linkname) | |
402 | except OSError: |
|
406 | except OSError: | |
403 | pass |
|
407 | pass | |
404 |
|
408 | |||
405 | util.makedirs(os.path.dirname(linkname), self.createmode) |
|
409 | util.makedirs(os.path.dirname(linkname), self.createmode) | |
406 |
|
410 | |||
407 | if self._cansymlink: |
|
411 | if self._cansymlink: | |
408 | try: |
|
412 | try: | |
409 | os.symlink(src, linkname) |
|
413 | os.symlink(src, linkname) | |
410 | except OSError as err: |
|
414 | except OSError as err: | |
411 | raise OSError(err.errno, _('could not symlink to %r: %s') % |
|
415 | raise OSError(err.errno, _('could not symlink to %r: %s') % | |
412 | (src, err.strerror), linkname) |
|
416 | (src, err.strerror), linkname) | |
413 | else: |
|
417 | else: | |
414 | self.write(dst, src) |
|
418 | self.write(dst, src) | |
415 |
|
419 | |||
416 | def join(self, path, *insidef): |
|
420 | def join(self, path, *insidef): | |
417 | if path: |
|
421 | if path: | |
418 | return os.path.join(self.base, path, *insidef) |
|
422 | return os.path.join(self.base, path, *insidef) | |
419 | else: |
|
423 | else: | |
420 | return self.base |
|
424 | return self.base | |
421 |
|
425 | |||
422 | opener = vfs |
|
426 | opener = vfs | |
423 |
|
427 | |||
424 | class auditvfs(object): |
|
428 | class auditvfs(object): | |
425 | def __init__(self, vfs): |
|
429 | def __init__(self, vfs): | |
426 | self.vfs = vfs |
|
430 | self.vfs = vfs | |
427 |
|
431 | |||
428 | @property |
|
432 | @property | |
429 | def mustaudit(self): |
|
433 | def mustaudit(self): | |
430 | return self.vfs.mustaudit |
|
434 | return self.vfs.mustaudit | |
431 |
|
435 | |||
432 | @mustaudit.setter |
|
436 | @mustaudit.setter | |
433 | def mustaudit(self, onoff): |
|
437 | def mustaudit(self, onoff): | |
434 | self.vfs.mustaudit = onoff |
|
438 | self.vfs.mustaudit = onoff | |
435 |
|
439 | |||
436 | @property |
|
440 | @property | |
437 | def options(self): |
|
441 | def options(self): | |
438 | return self.vfs.options |
|
442 | return self.vfs.options | |
439 |
|
443 | |||
440 | @options.setter |
|
444 | @options.setter | |
441 | def options(self, value): |
|
445 | def options(self, value): | |
442 | self.vfs.options = value |
|
446 | self.vfs.options = value | |
443 |
|
447 | |||
444 | class filtervfs(abstractvfs, auditvfs): |
|
448 | class filtervfs(abstractvfs, auditvfs): | |
445 | '''Wrapper vfs for filtering filenames with a function.''' |
|
449 | '''Wrapper vfs for filtering filenames with a function.''' | |
446 |
|
450 | |||
447 | def __init__(self, vfs, filter): |
|
451 | def __init__(self, vfs, filter): | |
448 | auditvfs.__init__(self, vfs) |
|
452 | auditvfs.__init__(self, vfs) | |
449 | self._filter = filter |
|
453 | self._filter = filter | |
450 |
|
454 | |||
451 | def __call__(self, path, *args, **kwargs): |
|
455 | def __call__(self, path, *args, **kwargs): | |
452 | return self.vfs(self._filter(path), *args, **kwargs) |
|
456 | return self.vfs(self._filter(path), *args, **kwargs) | |
453 |
|
457 | |||
454 | def join(self, path, *insidef): |
|
458 | def join(self, path, *insidef): | |
455 | if path: |
|
459 | if path: | |
456 | return self.vfs.join(self._filter(self.vfs.reljoin(path, *insidef))) |
|
460 | return self.vfs.join(self._filter(self.vfs.reljoin(path, *insidef))) | |
457 | else: |
|
461 | else: | |
458 | return self.vfs.join(path) |
|
462 | return self.vfs.join(path) | |
459 |
|
463 | |||
460 | filteropener = filtervfs |
|
464 | filteropener = filtervfs | |
461 |
|
465 | |||
462 | class readonlyvfs(abstractvfs, auditvfs): |
|
466 | class readonlyvfs(abstractvfs, auditvfs): | |
463 | '''Wrapper vfs preventing any writing.''' |
|
467 | '''Wrapper vfs preventing any writing.''' | |
464 |
|
468 | |||
465 | def __init__(self, vfs): |
|
469 | def __init__(self, vfs): | |
466 | auditvfs.__init__(self, vfs) |
|
470 | auditvfs.__init__(self, vfs) | |
467 |
|
471 | |||
468 | def __call__(self, path, mode='r', *args, **kw): |
|
472 | def __call__(self, path, mode='r', *args, **kw): | |
469 | if mode not in ('r', 'rb'): |
|
473 | if mode not in ('r', 'rb'): | |
470 | raise error.Abort(_('this vfs is read only')) |
|
474 | raise error.Abort(_('this vfs is read only')) | |
471 | return self.vfs(path, mode, *args, **kw) |
|
475 | return self.vfs(path, mode, *args, **kw) | |
472 |
|
476 | |||
473 | def join(self, path, *insidef): |
|
477 | def join(self, path, *insidef): | |
474 | return self.vfs.join(path, *insidef) |
|
478 | return self.vfs.join(path, *insidef) | |
475 |
|
479 | |||
476 | class closewrapbase(object): |
|
480 | class closewrapbase(object): | |
477 | """Base class of wrapper, which hooks closing |
|
481 | """Base class of wrapper, which hooks closing | |
478 |
|
482 | |||
479 | Do not instantiate outside of the vfs layer. |
|
483 | Do not instantiate outside of the vfs layer. | |
480 | """ |
|
484 | """ | |
481 | def __init__(self, fh): |
|
485 | def __init__(self, fh): | |
482 | object.__setattr__(self, '_origfh', fh) |
|
486 | object.__setattr__(self, '_origfh', fh) | |
483 |
|
487 | |||
484 | def __getattr__(self, attr): |
|
488 | def __getattr__(self, attr): | |
485 | return getattr(self._origfh, attr) |
|
489 | return getattr(self._origfh, attr) | |
486 |
|
490 | |||
487 | def __setattr__(self, attr, value): |
|
491 | def __setattr__(self, attr, value): | |
488 | return setattr(self._origfh, attr, value) |
|
492 | return setattr(self._origfh, attr, value) | |
489 |
|
493 | |||
490 | def __delattr__(self, attr): |
|
494 | def __delattr__(self, attr): | |
491 | return delattr(self._origfh, attr) |
|
495 | return delattr(self._origfh, attr) | |
492 |
|
496 | |||
493 | def __enter__(self): |
|
497 | def __enter__(self): | |
494 | return self._origfh.__enter__() |
|
498 | return self._origfh.__enter__() | |
495 |
|
499 | |||
496 | def __exit__(self, exc_type, exc_value, exc_tb): |
|
500 | def __exit__(self, exc_type, exc_value, exc_tb): | |
497 | raise NotImplementedError('attempted instantiating ' + str(type(self))) |
|
501 | raise NotImplementedError('attempted instantiating ' + str(type(self))) | |
498 |
|
502 | |||
499 | def close(self): |
|
503 | def close(self): | |
500 | raise NotImplementedError('attempted instantiating ' + str(type(self))) |
|
504 | raise NotImplementedError('attempted instantiating ' + str(type(self))) | |
501 |
|
505 | |||
502 | class delayclosedfile(closewrapbase): |
|
506 | class delayclosedfile(closewrapbase): | |
503 | """Proxy for a file object whose close is delayed. |
|
507 | """Proxy for a file object whose close is delayed. | |
504 |
|
508 | |||
505 | Do not instantiate outside of the vfs layer. |
|
509 | Do not instantiate outside of the vfs layer. | |
506 | """ |
|
510 | """ | |
507 | def __init__(self, fh, closer): |
|
511 | def __init__(self, fh, closer): | |
508 | super(delayclosedfile, self).__init__(fh) |
|
512 | super(delayclosedfile, self).__init__(fh) | |
509 | object.__setattr__(self, '_closer', closer) |
|
513 | object.__setattr__(self, '_closer', closer) | |
510 |
|
514 | |||
511 | def __exit__(self, exc_type, exc_value, exc_tb): |
|
515 | def __exit__(self, exc_type, exc_value, exc_tb): | |
512 | self._closer.close(self._origfh) |
|
516 | self._closer.close(self._origfh) | |
513 |
|
517 | |||
514 | def close(self): |
|
518 | def close(self): | |
515 | self._closer.close(self._origfh) |
|
519 | self._closer.close(self._origfh) | |
516 |
|
520 | |||
517 | class backgroundfilecloser(object): |
|
521 | class backgroundfilecloser(object): | |
518 | """Coordinates background closing of file handles on multiple threads.""" |
|
522 | """Coordinates background closing of file handles on multiple threads.""" | |
519 | def __init__(self, ui, expectedcount=-1): |
|
523 | def __init__(self, ui, expectedcount=-1): | |
520 | self._running = False |
|
524 | self._running = False | |
521 | self._entered = False |
|
525 | self._entered = False | |
522 | self._threads = [] |
|
526 | self._threads = [] | |
523 | self._threadexception = None |
|
527 | self._threadexception = None | |
524 |
|
528 | |||
525 | # Only Windows/NTFS has slow file closing. So only enable by default |
|
529 | # Only Windows/NTFS has slow file closing. So only enable by default | |
526 | # on that platform. But allow to be enabled elsewhere for testing. |
|
530 | # on that platform. But allow to be enabled elsewhere for testing. | |
527 | defaultenabled = pycompat.osname == 'nt' |
|
531 | defaultenabled = pycompat.osname == 'nt' | |
528 | enabled = ui.configbool('worker', 'backgroundclose', defaultenabled) |
|
532 | enabled = ui.configbool('worker', 'backgroundclose', defaultenabled) | |
529 |
|
533 | |||
530 | if not enabled: |
|
534 | if not enabled: | |
531 | return |
|
535 | return | |
532 |
|
536 | |||
533 | # There is overhead to starting and stopping the background threads. |
|
537 | # There is overhead to starting and stopping the background threads. | |
534 | # Don't do background processing unless the file count is large enough |
|
538 | # Don't do background processing unless the file count is large enough | |
535 | # to justify it. |
|
539 | # to justify it. | |
536 | minfilecount = ui.configint('worker', 'backgroundcloseminfilecount', |
|
540 | minfilecount = ui.configint('worker', 'backgroundcloseminfilecount', | |
537 | 2048) |
|
541 | 2048) | |
538 | # FUTURE dynamically start background threads after minfilecount closes. |
|
542 | # FUTURE dynamically start background threads after minfilecount closes. | |
539 | # (We don't currently have any callers that don't know their file count) |
|
543 | # (We don't currently have any callers that don't know their file count) | |
540 | if expectedcount > 0 and expectedcount < minfilecount: |
|
544 | if expectedcount > 0 and expectedcount < minfilecount: | |
541 | return |
|
545 | return | |
542 |
|
546 | |||
543 | # Windows defaults to a limit of 512 open files. A buffer of 128 |
|
547 | # Windows defaults to a limit of 512 open files. A buffer of 128 | |
544 | # should give us enough headway. |
|
548 | # should give us enough headway. | |
545 | maxqueue = ui.configint('worker', 'backgroundclosemaxqueue', 384) |
|
549 | maxqueue = ui.configint('worker', 'backgroundclosemaxqueue', 384) | |
546 | threadcount = ui.configint('worker', 'backgroundclosethreadcount', 4) |
|
550 | threadcount = ui.configint('worker', 'backgroundclosethreadcount', 4) | |
547 |
|
551 | |||
548 | ui.debug('starting %d threads for background file closing\n' % |
|
552 | ui.debug('starting %d threads for background file closing\n' % | |
549 | threadcount) |
|
553 | threadcount) | |
550 |
|
554 | |||
551 | self._queue = util.queue(maxsize=maxqueue) |
|
555 | self._queue = util.queue(maxsize=maxqueue) | |
552 | self._running = True |
|
556 | self._running = True | |
553 |
|
557 | |||
554 | for i in range(threadcount): |
|
558 | for i in range(threadcount): | |
555 | t = threading.Thread(target=self._worker, name='backgroundcloser') |
|
559 | t = threading.Thread(target=self._worker, name='backgroundcloser') | |
556 | self._threads.append(t) |
|
560 | self._threads.append(t) | |
557 | t.start() |
|
561 | t.start() | |
558 |
|
562 | |||
559 | def __enter__(self): |
|
563 | def __enter__(self): | |
560 | self._entered = True |
|
564 | self._entered = True | |
561 | return self |
|
565 | return self | |
562 |
|
566 | |||
563 | def __exit__(self, exc_type, exc_value, exc_tb): |
|
567 | def __exit__(self, exc_type, exc_value, exc_tb): | |
564 | self._running = False |
|
568 | self._running = False | |
565 |
|
569 | |||
566 | # Wait for threads to finish closing so open files don't linger for |
|
570 | # Wait for threads to finish closing so open files don't linger for | |
567 | # longer than lifetime of context manager. |
|
571 | # longer than lifetime of context manager. | |
568 | for t in self._threads: |
|
572 | for t in self._threads: | |
569 | t.join() |
|
573 | t.join() | |
570 |
|
574 | |||
571 | def _worker(self): |
|
575 | def _worker(self): | |
572 | """Main routine for worker thread.""" |
|
576 | """Main routine for worker thread.""" | |
573 | while True: |
|
577 | while True: | |
574 | try: |
|
578 | try: | |
575 | fh = self._queue.get(block=True, timeout=0.100) |
|
579 | fh = self._queue.get(block=True, timeout=0.100) | |
576 | # Need to catch or the thread will terminate and |
|
580 | # Need to catch or the thread will terminate and | |
577 | # we could orphan file descriptors. |
|
581 | # we could orphan file descriptors. | |
578 | try: |
|
582 | try: | |
579 | fh.close() |
|
583 | fh.close() | |
580 | except Exception as e: |
|
584 | except Exception as e: | |
581 | # Stash so can re-raise from main thread later. |
|
585 | # Stash so can re-raise from main thread later. | |
582 | self._threadexception = e |
|
586 | self._threadexception = e | |
583 | except util.empty: |
|
587 | except util.empty: | |
584 | if not self._running: |
|
588 | if not self._running: | |
585 | break |
|
589 | break | |
586 |
|
590 | |||
587 | def close(self, fh): |
|
591 | def close(self, fh): | |
588 | """Schedule a file for closing.""" |
|
592 | """Schedule a file for closing.""" | |
589 | if not self._entered: |
|
593 | if not self._entered: | |
590 | raise error.Abort(_('can only call close() when context manager ' |
|
594 | raise error.Abort(_('can only call close() when context manager ' | |
591 | 'active')) |
|
595 | 'active')) | |
592 |
|
596 | |||
593 | # If a background thread encountered an exception, raise now so we fail |
|
597 | # If a background thread encountered an exception, raise now so we fail | |
594 | # fast. Otherwise we may potentially go on for minutes until the error |
|
598 | # fast. Otherwise we may potentially go on for minutes until the error | |
595 | # is acted on. |
|
599 | # is acted on. | |
596 | if self._threadexception: |
|
600 | if self._threadexception: | |
597 | e = self._threadexception |
|
601 | e = self._threadexception | |
598 | self._threadexception = None |
|
602 | self._threadexception = None | |
599 | raise e |
|
603 | raise e | |
600 |
|
604 | |||
601 | # If we're not actively running, close synchronously. |
|
605 | # If we're not actively running, close synchronously. | |
602 | if not self._running: |
|
606 | if not self._running: | |
603 | fh.close() |
|
607 | fh.close() | |
604 | return |
|
608 | return | |
605 |
|
609 | |||
606 | self._queue.put(fh, block=True, timeout=None) |
|
610 | self._queue.put(fh, block=True, timeout=None) | |
607 |
|
611 | |||
608 | class checkambigatclosing(closewrapbase): |
|
612 | class checkambigatclosing(closewrapbase): | |
609 | """Proxy for a file object, to avoid ambiguity of file stat |
|
613 | """Proxy for a file object, to avoid ambiguity of file stat | |
610 |
|
614 | |||
611 | See also util.filestat for detail about "ambiguity of file stat". |
|
615 | See also util.filestat for detail about "ambiguity of file stat". | |
612 |
|
616 | |||
613 | This proxy is useful only if the target file is guarded by any |
|
617 | This proxy is useful only if the target file is guarded by any | |
614 | lock (e.g. repo.lock or repo.wlock) |
|
618 | lock (e.g. repo.lock or repo.wlock) | |
615 |
|
619 | |||
616 | Do not instantiate outside of the vfs layer. |
|
620 | Do not instantiate outside of the vfs layer. | |
617 | """ |
|
621 | """ | |
618 | def __init__(self, fh): |
|
622 | def __init__(self, fh): | |
619 | super(checkambigatclosing, self).__init__(fh) |
|
623 | super(checkambigatclosing, self).__init__(fh) | |
620 | object.__setattr__(self, '_oldstat', util.filestat(fh.name)) |
|
624 | object.__setattr__(self, '_oldstat', util.filestat(fh.name)) | |
621 |
|
625 | |||
622 | def _checkambig(self): |
|
626 | def _checkambig(self): | |
623 | oldstat = self._oldstat |
|
627 | oldstat = self._oldstat | |
624 | if oldstat.stat: |
|
628 | if oldstat.stat: | |
625 | newstat = util.filestat(self._origfh.name) |
|
629 | newstat = util.filestat(self._origfh.name) | |
626 | if newstat.isambig(oldstat): |
|
630 | if newstat.isambig(oldstat): | |
627 | # stat of changed file is ambiguous to original one |
|
631 | # stat of changed file is ambiguous to original one | |
628 | newstat.avoidambig(self._origfh.name, oldstat) |
|
632 | newstat.avoidambig(self._origfh.name, oldstat) | |
629 |
|
633 | |||
630 | def __exit__(self, exc_type, exc_value, exc_tb): |
|
634 | def __exit__(self, exc_type, exc_value, exc_tb): | |
631 | self._origfh.__exit__(exc_type, exc_value, exc_tb) |
|
635 | self._origfh.__exit__(exc_type, exc_value, exc_tb) | |
632 | self._checkambig() |
|
636 | self._checkambig() | |
633 |
|
637 | |||
634 | def close(self): |
|
638 | def close(self): | |
635 | self._origfh.close() |
|
639 | self._origfh.close() | |
636 | self._checkambig() |
|
640 | self._checkambig() |
General Comments 0
You need to be logged in to leave comments.
Login now