graph: limit the number of displayed changest to a reasonable value

mercurial/hgweb/webcommands.py

@@ -1,611 +1,611 b''
 #
 # Copyright 21 May 2005 - (c) 2005 Jake Edge <[e-mail]>
 # Copyright 2005-2007 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 import os, mimetypes, re, cgi
 import webutil
 from mercurial import revlog, archival, templatefilters
 from mercurial.node import short, hex, nullid
 from mercurial.util import binary, datestr
 from mercurial.repo import RepoError
 from common import paritygen, staticfile, get_contact, ErrorResponse
 from common import HTTP_OK, HTTP_NOT_FOUND
 from mercurial import graphmod
 
 # __all__ is populated with the allowed commands. Be sure to add to it if
 # you're adding a new command, or the new command won't work.
 
 __all__ = [
    'log', 'rawfile', 'file', 'changelog', 'shortlog', 'changeset', 'rev',
    'manifest', 'tags', 'summary', 'filediff', 'diff', 'annotate', 'filelog',
    'archive', 'static', 'graph',
 ]
 
 def log(web, req, tmpl):
     if 'file' in req.form and req.form['file'][0]:
         return filelog(web, req, tmpl)
     else:
         return changelog(web, req, tmpl)
 
 def rawfile(web, req, tmpl):
     path = webutil.cleanpath(web.repo, req.form.get('file', [''])[0])
     if not path:
         content = manifest(web, req, tmpl)
         req.respond(HTTP_OK, web.ctype)
         return content
 
     try:
         fctx = webutil.filectx(web.repo, req)
     except revlog.LookupError, inst:
         try:
             content = manifest(web, req, tmpl)
             req.respond(HTTP_OK, web.ctype)
             return content
         except ErrorResponse:
             raise inst
 
     path = fctx.path()
     text = fctx.data()
     mt = mimetypes.guess_type(path)[0]
     if mt is None or binary(text):
         mt = mt or 'application/octet-stream'
 
     req.respond(HTTP_OK, mt, path, len(text))
     return [text]
 
 def _filerevision(web, tmpl, fctx):
     f = fctx.path()
     text = fctx.data()
     fl = fctx.filelog()
     n = fctx.filenode()
     parity = paritygen(web.stripecount)
 
     if binary(text):
         mt = mimetypes.guess_type(f)[0] or 'application/octet-stream'
         text = '(binary:%s)' % mt
 
     def lines():
         for lineno, t in enumerate(text.splitlines(1)):
             yield {"line": t,
                    "lineid": "l%d" % (lineno + 1),
                    "linenumber": "% 6d" % (lineno + 1),
                    "parity": parity.next()}
 
     return tmpl("filerevision",
                 file=f,
                 path=webutil.up(f),
                 text=lines(),
                 rev=fctx.rev(),
                 node=hex(fctx.node()),
                 author=fctx.user(),
                 date=fctx.date(),
                 desc=fctx.description(),
                 branch=webutil.nodebranchnodefault(fctx),
                 parent=webutil.siblings(fctx.parents()),
                 child=webutil.siblings(fctx.children()),
                 rename=webutil.renamelink(fctx),
                 permissions=fctx.manifest().flags(f))
 
 def file(web, req, tmpl):
     path = webutil.cleanpath(web.repo, req.form.get('file', [''])[0])
     if path:
         try:
             return _filerevision(web, tmpl, webutil.filectx(web.repo, req))
         except revlog.LookupError, inst:
             pass
 
     try:
         return manifest(web, req, tmpl)
     except ErrorResponse:
         raise inst
 
 def _search(web, tmpl, query):
 
     def changelist(**map):
         cl = web.repo.changelog
         count = 0
         qw = query.lower().split()
 
         def revgen():
             for i in xrange(cl.count() - 1, 0, -100):
                 l = []
                 for j in xrange(max(0, i - 100), i + 1):
                     ctx = web.repo.changectx(j)
                     l.append(ctx)
                 l.reverse()
                 for e in l:
                     yield e
 
         for ctx in revgen():
             miss = 0
             for q in qw:
                 if not (q in ctx.user().lower() or
                         q in ctx.description().lower() or
                         q in " ".join(ctx.files()).lower()):
                     miss = 1
                     break
             if miss:
                 continue
 
             count += 1
             n = ctx.node()
             showtags = webutil.showtag(web.repo, tmpl, 'changelogtag', n)
 
             yield tmpl('searchentry',
                        parity=parity.next(),
                        author=ctx.user(),
                        parent=webutil.siblings(ctx.parents()),
                        child=webutil.siblings(ctx.children()),
                        changelogtag=showtags,
                        desc=ctx.description(),
                        date=ctx.date(),
                        files=web.listfilediffs(tmpl, ctx.files(), n),
                        rev=ctx.rev(),
                        node=hex(n),
                        tags=webutil.nodetagsdict(web.repo, n),
                        inbranch=webutil.nodeinbranch(web.repo, ctx),
                        branches=webutil.nodebranchdict(web.repo, ctx))
 
             if count >= web.maxchanges:
                 break
 
     cl = web.repo.changelog
     parity = paritygen(web.stripecount)
 
     return tmpl('search',
                 query=query,
                 node=hex(cl.tip()),
                 entries=changelist,
                 archives=web.archivelist("tip"))
 
 def changelog(web, req, tmpl, shortlog = False):
     if 'node' in req.form:
         ctx = webutil.changectx(web.repo, req)
     else:
         if 'rev' in req.form:
             hi = req.form['rev'][0]
         else:
             hi = web.repo.changelog.count() - 1
         try:
             ctx = web.repo.changectx(hi)
         except RepoError:
             return _search(web, tmpl, hi) # XXX redirect to 404 page?
 
     def changelist(limit=0, **map):
         cl = web.repo.changelog
         l = [] # build a list in forward order for efficiency
         for i in xrange(start, end):
             ctx = web.repo.changectx(i)
             n = ctx.node()
             showtags = webutil.showtag(web.repo, tmpl, 'changelogtag', n)
 
             l.insert(0, {"parity": parity.next(),
                          "author": ctx.user(),
                          "parent": webutil.siblings(ctx.parents(), i - 1),
                          "child": webutil.siblings(ctx.children(), i + 1),
                          "changelogtag": showtags,
                          "desc": ctx.description(),
                          "date": ctx.date(),
                          "files": web.listfilediffs(tmpl, ctx.files(), n),
                          "rev": i,
                          "node": hex(n),
                          "tags": webutil.nodetagsdict(web.repo, n),
                          "inbranch": webutil.nodeinbranch(web.repo, ctx),
                          "branches": webutil.nodebranchdict(web.repo, ctx)
                         })
 
         if limit > 0:
             l = l[:limit]
 
         for e in l:
             yield e
 
     maxchanges = shortlog and web.maxshortchanges or web.maxchanges
     cl = web.repo.changelog
     count = cl.count()
     pos = ctx.rev()
     start = max(0, pos - maxchanges + 1)
     end = min(count, start + maxchanges)
     pos = end - 1
     parity = paritygen(web.stripecount, offset=start-end)
 
     changenav = webutil.revnavgen(pos, maxchanges, count, web.repo.changectx)
 
     return tmpl(shortlog and 'shortlog' or 'changelog',
                 changenav=changenav,
                 node=hex(ctx.node()),
                 rev=pos, changesets=count,
                 entries=lambda **x: changelist(limit=0,**x),
                 latestentry=lambda **x: changelist(limit=1,**x),
                 archives=web.archivelist("tip"))
 
 def shortlog(web, req, tmpl):
     return changelog(web, req, tmpl, shortlog = True)
 
 def changeset(web, req, tmpl):
     ctx = webutil.changectx(web.repo, req)
     n = ctx.node()
     showtags = webutil.showtag(web.repo, tmpl, 'changesettag', n)
     parents = ctx.parents()
     p1 = parents[0].node()
 
     files = []
     parity = paritygen(web.stripecount)
     for f in ctx.files():
         files.append(tmpl("filenodelink",
                           node=hex(n), file=f,
                           parity=parity.next()))
 
     diffs = web.diff(tmpl, p1, n, None)
     return tmpl('changeset',
                 diff=diffs,
                 rev=ctx.rev(),
                 node=hex(n),
                 parent=webutil.siblings(parents),
                 child=webutil.siblings(ctx.children()),
                 changesettag=showtags,
                 author=ctx.user(),
                 desc=ctx.description(),
                 date=ctx.date(),
                 files=files,
                 archives=web.archivelist(hex(n)),
                 tags=webutil.nodetagsdict(web.repo, n),
                 branch=webutil.nodebranchnodefault(ctx),
                 inbranch=webutil.nodeinbranch(web.repo, ctx),
                 branches=webutil.nodebranchdict(web.repo, ctx))
 
 rev = changeset
 
 def manifest(web, req, tmpl):
     ctx = webutil.changectx(web.repo, req)
     path = webutil.cleanpath(web.repo, req.form.get('file', [''])[0])
     mf = ctx.manifest()
     node = ctx.node()
 
     files = {}
     parity = paritygen(web.stripecount)
 
     if path and path[-1] != "/":
         path += "/"
     l = len(path)
     abspath = "/" + path
 
     for f, n in mf.items():
         if f[:l] != path:
             continue
         remain = f[l:]
         if "/" in remain:
             short = remain[:remain.index("/") + 1] # bleah
             files[short] = (f, None)
         else:
             short = os.path.basename(remain)
             files[short] = (f, n)
 
     if not files:
         raise ErrorResponse(HTTP_NOT_FOUND, 'path not found: ' + path)
 
     def filelist(**map):
         fl = files.keys()
         fl.sort()
         for f in fl:
             full, fnode = files[f]
             if not fnode:
                 continue
 
             fctx = ctx.filectx(full)
             yield {"file": full,
                    "parity": parity.next(),
                    "basename": f,
                    "date": fctx.changectx().date(),
                    "size": fctx.size(),
                    "permissions": mf.flags(full)}
 
     def dirlist(**map):
         fl = files.keys()
         fl.sort()
         for f in fl:
             full, fnode = files[f]
             if fnode:
                 continue
 
             yield {"parity": parity.next(),
                    "path": "%s%s" % (abspath, f),
                    "basename": f[:-1]}
 
     return tmpl("manifest",
                 rev=ctx.rev(),
                 node=hex(node),
                 path=abspath,
                 up=webutil.up(abspath),
                 upparity=parity.next(),
                 fentries=filelist,
                 dentries=dirlist,
                 archives=web.archivelist(hex(node)),
                 tags=webutil.nodetagsdict(web.repo, node),
                 inbranch=webutil.nodeinbranch(web.repo, ctx),
                 branches=webutil.nodebranchdict(web.repo, ctx))
 
 def tags(web, req, tmpl):
     i = web.repo.tagslist()
     i.reverse()
     parity = paritygen(web.stripecount)
 
     def entries(notip=False,limit=0, **map):
         count = 0
         for k, n in i:
             if notip and k == "tip":
                 continue
             if limit > 0 and count >= limit:
                 continue
             count = count + 1
             yield {"parity": parity.next(),
                    "tag": k,
                    "date": web.repo.changectx(n).date(),
                    "node": hex(n)}
 
     return tmpl("tags",
                 node=hex(web.repo.changelog.tip()),
                 entries=lambda **x: entries(False,0, **x),
                 entriesnotip=lambda **x: entries(True,0, **x),
                 latestentry=lambda **x: entries(True,1, **x))
 
 def summary(web, req, tmpl):
     i = web.repo.tagslist()
     i.reverse()
 
     def tagentries(**map):
         parity = paritygen(web.stripecount)
         count = 0
         for k, n in i:
             if k == "tip": # skip tip
                 continue
 
             count += 1
             if count > 10: # limit to 10 tags
                 break
 
             yield tmpl("tagentry",
                        parity=parity.next(),
                        tag=k,
                        node=hex(n),
                        date=web.repo.changectx(n).date())
 
     def branches(**map):
         parity = paritygen(web.stripecount)
 
         b = web.repo.branchtags()
         l = [(-web.repo.changelog.rev(n), n, t) for t, n in b.items()]
         l.sort()
 
         for r,n,t in l:
             ctx = web.repo.changectx(n)
             yield {'parity': parity.next(),
                    'branch': t,
                    'node': hex(n),
                    'date': ctx.date()}
 
     def changelist(**map):
         parity = paritygen(web.stripecount, offset=start-end)
         l = [] # build a list in forward order for efficiency
         for i in xrange(start, end):
             ctx = web.repo.changectx(i)
             n = ctx.node()
             hn = hex(n)
 
             l.insert(0, tmpl(
                'shortlogentry',
                 parity=parity.next(),
                 author=ctx.user(),
                 desc=ctx.description(),
                 date=ctx.date(),
                 rev=i,
                 node=hn,
                 tags=webutil.nodetagsdict(web.repo, n),
                 inbranch=webutil.nodeinbranch(web.repo, ctx),
                 branches=webutil.nodebranchdict(web.repo, ctx)))
 
         yield l
 
     cl = web.repo.changelog
     count = cl.count()
     start = max(0, count - web.maxchanges)
     end = min(count, start + web.maxchanges)
 
     return tmpl("summary",
                 desc=web.config("web", "description", "unknown"),
                 owner=get_contact(web.config) or "unknown",
                 lastchange=cl.read(cl.tip())[2],
                 tags=tagentries,
                 branches=branches,
                 shortlog=changelist,
                 node=hex(cl.tip()),
                 archives=web.archivelist("tip"))
 
 def filediff(web, req, tmpl):
     fctx = webutil.filectx(web.repo, req)
     n = fctx.node()
     path = fctx.path()
     parents = fctx.parents()
     p1 = parents and parents[0].node() or nullid
 
     diffs = web.diff(tmpl, p1, n, [path])
     return tmpl("filediff",
                 file=path,
                 node=hex(n),
                 rev=fctx.rev(),
                 date=fctx.date(),
                 desc=fctx.description(),
                 author=fctx.user(),
                 rename=webutil.renamelink(fctx),
                 branch=webutil.nodebranchnodefault(fctx),
                 parent=webutil.siblings(parents),
                 child=webutil.siblings(fctx.children()),
                 diff=diffs)
 
 diff = filediff
 
 def annotate(web, req, tmpl):
     fctx = webutil.filectx(web.repo, req)
     f = fctx.path()
     n = fctx.filenode()
     fl = fctx.filelog()
     parity = paritygen(web.stripecount)
 
     def annotate(**map):
         last = None
         if binary(fctx.data()):
             mt = (mimetypes.guess_type(fctx.path())[0]
                   or 'application/octet-stream')
             lines = enumerate([((fctx.filectx(fctx.filerev()), 1),
                                 '(binary:%s)' % mt)])
         else:
             lines = enumerate(fctx.annotate(follow=True, linenumber=True))
         for lineno, ((f, targetline), l) in lines:
             fnode = f.filenode()
 
             if last != fnode:
                 last = fnode
 
             yield {"parity": parity.next(),
                    "node": hex(f.node()),
                    "rev": f.rev(),
                    "author": f.user(),
                    "desc": f.description(),
                    "file": f.path(),
                    "targetline": targetline,
                    "line": l,
                    "lineid": "l%d" % (lineno + 1),
                    "linenumber": "% 6d" % (lineno + 1)}
 
     return tmpl("fileannotate",
                 file=f,
                 annotate=annotate,
                 path=webutil.up(f),
                 rev=fctx.rev(),
                 node=hex(fctx.node()),
                 author=fctx.user(),
                 date=fctx.date(),
                 desc=fctx.description(),
                 rename=webutil.renamelink(fctx),
                 branch=webutil.nodebranchnodefault(fctx),
                 parent=webutil.siblings(fctx.parents()),
                 child=webutil.siblings(fctx.children()),
                 permissions=fctx.manifest().flags(f))
 
 def filelog(web, req, tmpl):
     fctx = webutil.filectx(web.repo, req)
     f = fctx.path()
     fl = fctx.filelog()
     count = fl.count()
     pagelen = web.maxshortchanges
     pos = fctx.filerev()
     start = max(0, pos - pagelen + 1)
     end = min(count, start + pagelen)
     pos = end - 1
     parity = paritygen(web.stripecount, offset=start-end)
 
     def entries(limit=0, **map):
         l = []
 
         for i in xrange(start, end):
             ctx = fctx.filectx(i)
             n = fl.node(i)
 
             l.insert(0, {"parity": parity.next(),
                          "filerev": i,
                          "file": f,
                          "node": hex(ctx.node()),
                          "author": ctx.user(),
                          "date": ctx.date(),
                          "rename": webutil.renamelink(fctx),
                          "parent": webutil.siblings(fctx.parents()),
                          "child": webutil.siblings(fctx.children()),
                          "desc": ctx.description()})
 
         if limit > 0:
             l = l[:limit]
 
         for e in l:
             yield e
 
     nodefunc = lambda x: fctx.filectx(fileid=x)
     nav = webutil.revnavgen(pos, pagelen, count, nodefunc)
     return tmpl("filelog", file=f, node=hex(fctx.node()), nav=nav,
                 entries=lambda **x: entries(limit=0, **x),
                 latestentry=lambda **x: entries(limit=1, **x))
 
 
 def archive(web, req, tmpl):
     type_ = req.form.get('type', [None])[0]
     allowed = web.configlist("web", "allow_archive")
     key = req.form['node'][0]
 
     if not (type_ in web.archives and (type_ in allowed or
         web.configbool("web", "allow" + type_, False))):
         msg = 'Unsupported archive type: %s' % type_
         raise ErrorResponse(HTTP_NOT_FOUND, msg)
 
     reponame = re.sub(r"\W+", "-", os.path.basename(web.reponame))
     cnode = web.repo.lookup(key)
     arch_version = key
     if cnode == key or key == 'tip':
         arch_version = short(cnode)
     name = "%s-%s" % (reponame, arch_version)
     mimetype, artype, extension, encoding = web.archive_specs[type_]
     headers = [
         ('Content-Type', mimetype),
         ('Content-Disposition', 'attachment; filename=%s%s' % (name, extension))
     ]
     if encoding:
         headers.append(('Content-Encoding', encoding))
     req.header(headers)
     req.respond(HTTP_OK)
     archival.archive(web.repo, req, cnode, artype, prefix=name)
     return []
 
 
 def static(web, req, tmpl):
     fname = req.form['file'][0]
     # a repo owner may set web.static in .hg/hgrc to get any file
     # readable by the user running the CGI script
     static = web.config("web", "static",
                         os.path.join(web.templatepath, "static"),
                         untrusted=False)
     return [staticfile(static, fname, req)]
 
 def graph(web, req, tmpl):
     rev = webutil.changectx(web.repo, req).rev()
-    revcount = int(req.form.get('revcount', [25])[0])
     bg_height = 39
 
     max_rev = web.repo.changelog.count() - 1
+    revcount = min(max_rev, int(req.form.get('revcount', [25])[0]))
     revnode = web.repo.changelog.node(rev)
     revnode_hex = hex(revnode)
     uprev = min(max_rev, rev + revcount)
     downrev = max(0, rev - revcount)
     lessrev = max(0, rev - revcount / 2)
 
     maxchanges = web.maxshortchanges or web.maxchanges
     count = web.repo.changelog.count()
     changenav = webutil.revnavgen(rev, maxchanges, count, web.repo.changectx)
 
     tree = list(graphmod.graph(web.repo, rev, rev - revcount))
     canvasheight = (len(tree) + 1) * bg_height - 27;
 
     data = []
     for i, (ctx, vtx, edges) in enumerate(tree):
         node = short(ctx.node())
         age = templatefilters.age(ctx.date())
         desc = templatefilters.firstline(ctx.description())
         desc = cgi.escape(desc)
         user = cgi.escape(templatefilters.person(ctx.user()))
         data.append((node, vtx, edges, desc, user, age, ctx.tags()))
 
     return tmpl('graph', rev=rev, revcount=revcount, uprev=uprev,
                 lessrev=lessrev, revcountmore=revcount and 2 * revcount or 1,
                 revcountless=revcount / 2, downrev=downrev,
                 canvasheight=canvasheight, bg_height=bg_height,
                 jsdata=data, node=revnode_hex, changenav=changenav)