| 1 | # -*- mode: python; coding: utf-8 -*- |
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| 2 | # :Progetto: vcpx -- Subversion details |
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| 3 | # :Creato: ven 18 giu 2004 15:00:52 CEST |
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| 4 | # :Autore: Lele Gaifax <lele@nautilus.homeip.net> |
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| 5 | # :Licenza: GNU General Public License |
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| 6 | # |
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| 7 | |
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| 8 | """ |
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| 9 | This module contains supporting classes for Subversion. |
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| 10 | """ |
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| 11 | |
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| 12 | __docformat__ = 'reStructuredText' |
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| 13 | |
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| 14 | from shwrap import ExternalCommand, PIPE, STDOUT, ReopenableNamedTemporaryFile |
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| 15 | from source import UpdatableSourceWorkingDir, \ |
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| 16 | ChangesetApplicationFailure, GetUpstreamChangesetsFailure |
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| 17 | from target import SyncronizableTargetWorkingDir, TargetInitializationFailure |
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| 18 | |
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| 19 | def changesets_from_svnlog(log, repository, module): |
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| 20 | from xml.sax import parseString |
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| 21 | from xml.sax.handler import ContentHandler |
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| 22 | from changes import ChangesetEntry, Changeset |
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| 23 | from datetime import datetime |
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| 24 | from string import maketrans |
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| 25 | |
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| 26 | def get_entry_from_path(path, module=module): |
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| 27 | # Given the repository url of this wc, say |
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| 28 | # "http://server/plone/CMFPlone/branches/Plone-2_0-branch" |
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| 29 | # extract the "entry" portion (a relative path) from what |
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| 30 | # svn log --xml says, ie |
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| 31 | # "/CMFPlone/branches/Plone-2_0-branch/tests/PloneTestCase.py" |
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| 32 | # that is to say "tests/PloneTestCase.py" |
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| 33 | |
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| 34 | if path.startswith(module): |
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| 35 | relative = path[len(module):] |
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| 36 | if relative.startswith('/'): |
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| 37 | return relative[1:] |
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| 38 | else: |
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| 39 | return relative |
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| 40 | |
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| 41 | # The path is outside our tracked tree... |
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| 42 | return None |
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| 43 | |
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| 44 | class SvnXMLLogHandler(ContentHandler): |
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| 45 | # Map between svn action and tailor's. |
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| 46 | # NB: 'R', in svn parlance, means REPLACED, something other |
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| 47 | # system may view as a simpler ADD, taking the following as |
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| 48 | # the most common idiom:: |
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| 49 | # |
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| 50 | # # Rename the old file with a better name |
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| 51 | # $ svn mv somefile nicer-name-scheme.py |
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| 52 | # |
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| 53 | # # Be nice with lazy users |
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| 54 | # $ echo "exec nicer-name-scheme.py" > somefile |
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| 55 | # |
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| 56 | # # Add the wrapper with the old name |
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| 57 | # $ svn add somefile |
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| 58 | # |
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| 59 | # $ svn commit -m "Longer name for somefile" |
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| 60 | |
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| 61 | ACTIONSMAP = {'R': 'R', # will be ChangesetEntry.ADDED |
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| 62 | 'M': ChangesetEntry.UPDATED, |
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| 63 | 'A': ChangesetEntry.ADDED, |
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| 64 | 'D': ChangesetEntry.DELETED} |
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| 65 | |
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| 66 | def __init__(self): |
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| 67 | self.changesets = [] |
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| 68 | self.current = None |
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| 69 | self.current_field = [] |
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| 70 | self.renamed = {} |
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| 71 | |
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| 72 | def startElement(self, name, attributes): |
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| 73 | if name == 'logentry': |
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| 74 | self.current = {} |
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| 75 | self.current['revision'] = attributes['revision'] |
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| 76 | self.current['entries'] = [] |
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| 77 | elif name in ['author', 'date', 'msg']: |
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| 78 | self.current_field = [] |
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| 79 | elif name == 'path': |
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| 80 | self.current_field = [] |
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| 81 | if attributes.has_key('copyfrom-path'): |
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| 82 | self.current_path_action = ( |
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| 83 | attributes['action'], |
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| 84 | attributes['copyfrom-path'], |
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| 85 | attributes['copyfrom-rev']) |
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| 86 | else: |
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| 87 | self.current_path_action = attributes['action'] |
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| 88 | |
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| 89 | def endElement(self, name): |
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| 90 | if name == 'logentry': |
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| 91 | # Sort the paths to make tests easier |
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| 92 | self.current['entries'].sort(lambda a,b: cmp(a.name, b.name)) |
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| 93 | |
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| 94 | # Eliminate "useless" entries: SVN does not have atomic |
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| 95 | # renames, but rather uses a ADD+RM duo. |
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| 96 | # |
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| 97 | # So cycle over all entries of this patch, discarding |
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| 98 | # the deletion of files that were actually renamed, and |
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| 99 | # at the same time change related entry from ADDED to |
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| 100 | # RENAMED. |
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| 101 | |
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| 102 | mv_or_cp = {} |
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| 103 | for e in self.current['entries']: |
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| 104 | if e.action_kind == e.ADDED and e.old_name is not None: |
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| 105 | mv_or_cp[e.old_name] = e |
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| 106 | |
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| 107 | entries = [] |
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| 108 | for e in self.current['entries']: |
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| 109 | if e.action_kind==e.DELETED and mv_or_cp.has_key(e.name): |
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| 110 | mv_or_cp[e.name].action_kind = e.RENAMED |
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| 111 | elif e.action_kind=='R': |
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| 112 | if mv_or_cp.has_key(e.name): |
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| 113 | mv_or_cp[e.name].action_kind = e.RENAMED |
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| 114 | e.action_kind = e.ADDED |
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| 115 | entries.append(e) |
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| 116 | else: |
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| 117 | entries.append(e) |
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| 118 | |
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| 119 | svndate = self.current['date'] |
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| 120 | # 2004-04-16T17:12:48.000000Z |
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| 121 | y,m,d = map(int, svndate[:10].split('-')) |
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| 122 | hh,mm,ss = map(int, svndate[11:19].split(':')) |
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| 123 | ms = int(svndate[20:-1]) |
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| 124 | timestamp = datetime(y, m, d, hh, mm, ss, ms) |
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| 125 | |
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| 126 | changeset = Changeset(self.current['revision'], |
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| 127 | timestamp, |
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| 128 | self.current.get('author'), |
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| 129 | self.current['msg'], |
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| 130 | entries) |
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| 131 | self.changesets.append(changeset) |
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| 132 | self.current = None |
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| 133 | elif name in ['author', 'date', 'msg']: |
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| 134 | self.current[name] = ''.join(self.current_field) |
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| 135 | elif name == 'path': |
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| 136 | path = ''.join(self.current_field) |
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| 137 | entrypath = get_entry_from_path(path) |
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| 138 | if entrypath: |
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| 139 | entry = ChangesetEntry(entrypath) |
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| 140 | |
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| 141 | if type(self.current_path_action) == type( () ): |
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| 142 | old = get_entry_from_path(self.current_path_action[1]) |
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| 143 | if old: |
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| 144 | entry.action_kind = self.ACTIONSMAP[self.current_path_action[0]] |
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| 145 | entry.old_name = old |
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| 146 | self.renamed[entry.old_name] = True |
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| 147 | else: |
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| 148 | entry.action_kind = entry.ADDED |
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| 149 | else: |
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| 150 | entry.action_kind = self.ACTIONSMAP[self.current_path_action] |
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| 151 | |
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| 152 | self.current['entries'].append(entry) |
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| 153 | |
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| 154 | |
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| 155 | def characters(self, data): |
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| 156 | self.current_field.append(data) |
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| 157 | |
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| 158 | |
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| 159 | # Apparently some (SVN repo contains)/(SVN server dumps) some characters that |
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| 160 | # are illegal in an XML stream. This was the case with Twisted Matrix master |
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| 161 | # repository. To be safe, we replace all of them with a question mark. |
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| 162 | |
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| 163 | allbadchars = "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0B\x0C\x0E\x0F\x10\x11" \ |
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| 164 | "\x12\x13\x14\x15\x16\x17\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F\x7f" |
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| 165 | tt = maketrans(allbadchars, "?"*len(allbadchars)) |
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| 166 | handler = SvnXMLLogHandler() |
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| 167 | parseString(log.read().translate(tt), handler) |
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| 168 | return handler.changesets |
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| 169 | |
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| 170 | |
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| 171 | class SvnWorkingDir(UpdatableSourceWorkingDir, SyncronizableTargetWorkingDir): |
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| 172 | |
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| 173 | ## UpdatableSourceWorkingDir |
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| 174 | |
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| 175 | def _getUpstreamChangesets(self, sincerev=None): |
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| 176 | if sincerev: |
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| 177 | sincerev = int(sincerev) |
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| 178 | else: |
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| 179 | sincerev = 0 |
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| 180 | |
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| 181 | cmd = self.repository.command("log", "--verbose", "--xml", |
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| 182 | "--revision", "%d:HEAD" % (sincerev+1)) |
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| 183 | svnlog = ExternalCommand(cwd=self.basedir, command=cmd) |
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| 184 | log = svnlog.execute('.', stdout=PIPE, TZ='UTC')[0] |
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| 185 | |
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| 186 | if svnlog.exit_status: |
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| 187 | return [] |
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| 188 | |
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| 189 | return changesets_from_svnlog(log, |
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| 190 | self.repository.repository, |
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| 191 | self.repository.module) |
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| 192 | |
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| 193 | def _applyChangeset(self, changeset): |
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| 194 | from time import sleep |
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| 195 | |
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| 196 | cmd = self.repository.command("update", |
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| 197 | "--revision", changeset.revision, ".") |
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| 198 | svnup = ExternalCommand(cwd=self.basedir, command=cmd) |
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| 199 | |
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| 200 | retry = 0 |
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| 201 | while True: |
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| 202 | out = svnup.execute(stdout=PIPE)[0] |
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| 203 | |
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| 204 | if svnup.exit_status == 1: |
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| 205 | retry += 1 |
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| 206 | if retry>3: |
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| 207 | break |
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| 208 | delay = 2**retry |
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| 209 | self.log_info("%s returned status %s, " |
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| 210 | "retrying in %d seconds..." % |
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| 211 | (str(svnup), svnup.exit_status, delay)) |
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| 212 | sleep(delay) |
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| 213 | else: |
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| 214 | break |
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| 215 | |
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| 216 | if svnup.exit_status: |
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| 217 | raise ChangesetApplicationFailure( |
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| 218 | "%s returned status %s" % (str(svnup), svnup.exit_status)) |
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| 219 | |
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| 220 | self.log_info("%s updated to %s" % ( |
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| 221 | ','.join([e.name for e in changeset.entries]), |
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| 222 | changeset.revision)) |
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| 223 | |
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| 224 | result = [] |
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| 225 | for line in out: |
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| 226 | if len(line)>2 and line[0] == 'C' and line[1] == ' ': |
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| 227 | self.log_info("Conflict after 'svn update': '%s'" % line) |
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| 228 | result.append(line[2:-1]) |
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| 229 | |
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| 230 | return result |
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| 231 | |
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| 232 | def _checkoutUpstreamRevision(self, revision): |
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| 233 | """ |
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| 234 | Concretely do the checkout of the upstream revision. |
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| 235 | """ |
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| 236 | |
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| 237 | from os.path import join, exists |
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| 238 | |
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| 239 | if revision == 'INITIAL': |
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| 240 | initial = True |
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| 241 | cmd = self.repository.command("log", "--verbose", "--xml", |
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| 242 | "--limit", "1", |
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| 243 | "--revision", "1:HEAD") |
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| 244 | svnlog = ExternalCommand(command=cmd) |
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| 245 | output = svnlog.execute("%s%s" % (self.repository.repository, |
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| 246 | self.repository.module), |
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| 247 | stdout=PIPE)[0] |
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| 248 | |
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| 249 | if svnlog.exit_status: |
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| 250 | raise TargetInitializationFailure( |
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| 251 | "%s returned status %d saying \"%s\"" % |
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| 252 | (str(output), changes.exit_status, output.read())) |
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| 253 | |
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| 254 | csets = changesets_from_svnlog(output, |
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| 255 | self.repository.repository, |
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| 256 | self.repository.module) |
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| 257 | revision = csets[0].revision |
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| 258 | else: |
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| 259 | initial = False |
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| 260 | |
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| 261 | if not exists(join(self.basedir, '.svn')): |
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| 262 | self.log_info("checking out a working copy") |
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| 263 | cmd = self.repository.command("co", "--quiet", |
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| 264 | "--revision", revision) |
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| 265 | svnco = ExternalCommand(command=cmd) |
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| 266 | svnco.execute("%s%s" % (self.repository.repository, |
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| 267 | self.repository.module), self.basedir) |
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| 268 | if svnco.exit_status: |
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| 269 | raise TargetInitializationFailure( |
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| 270 | "%s returned status %s" % (str(svnco), svnco.exit_status)) |
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| 271 | else: |
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| 272 | self.log_info("%s already exists, assuming it's a svn working dir" % self.basedir) |
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| 273 | |
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| 274 | if not initial: |
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| 275 | cmd = self.repository.command("log", "--verbose", "--xml", |
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| 276 | "--revision", revision=='HEAD' and 'COMMITTED' or revision) |
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| 277 | svnlog = ExternalCommand(cwd=self.basedir, command=cmd) |
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| 278 | output = svnlog.execute(stdout=PIPE)[0] |
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| 279 | |
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| 280 | if svnlog.exit_status: |
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| 281 | raise TargetInitializationFailure( |
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| 282 | "%s returned status %d saying \"%s\"" % |
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| 283 | (str(changes), changes.exit_status, output.read())) |
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| 284 | |
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| 285 | csets = changesets_from_svnlog(output, |
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| 286 | self.repository.repository, |
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| 287 | self.repository.module) |
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| 288 | |
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| 289 | last = csets[0] |
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| 290 | |
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| 291 | self.log_info("working copy up to svn revision %s" % last.revision) |
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| 292 | |
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| 293 | return last |
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| 294 | |
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| 295 | ## SyncronizableTargetWorkingDir |
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| 296 | |
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| 297 | def _addPathnames(self, names): |
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| 298 | """ |
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| 299 | Add some new filesystem objects. |
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| 300 | """ |
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| 301 | |
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| 302 | cmd = self.repository.command("add", "--quiet", "--no-auto-props", |
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| 303 | "--non-recursive") |
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| 304 | ExternalCommand(cwd=self.basedir, command=cmd).execute(names) |
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| 305 | |
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| 306 | def _getCommitEntries(self, changeset): |
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| 307 | """ |
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| 308 | Extract the names of the entries for the commit phase. Since SVN |
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| 309 | handles "rename" operations as "remove+add", both entries must be |
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| 310 | committed. |
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| 311 | """ |
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| 312 | |
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| 313 | entries = SyncronizableTargetWorkingDir._getCommitEntries(self, |
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| 314 | changeset) |
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| 315 | entries.extend([e.old_name for e in changeset.renamedEntries()]) |
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| 316 | |
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| 317 | return entries |
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| 318 | |
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| 319 | def _commit(self, date, author, patchname, changelog=None, entries=None): |
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| 320 | """ |
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| 321 | Commit the changeset. |
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| 322 | """ |
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| 323 | |
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| 324 | from sys import getdefaultencoding |
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| 325 | |
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| 326 | encoding = ExternalCommand.FORCE_ENCODING or getdefaultencoding() |
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| 327 | |
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| 328 | logmessage = [] |
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| 329 | if patchname: |
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| 330 | logmessage.append(patchname.encode(encoding)) |
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| 331 | if changelog: |
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| 332 | logmessage.append(changelog.encode(encoding)) |
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| 333 | |
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| 334 | # If we cannot use propset, fall back to old behaviour of |
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| 335 | # appending these info to the changelog |
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| 336 | |
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| 337 | if not self.USE_PROPSET: |
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| 338 | logmessage.append('') |
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| 339 | logmessage.append('Original author: %s' % author.encode(encoding)) |
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| 340 | logmessage.append('Date: %s' % date) |
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| 341 | |
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| 342 | rontf = ReopenableNamedTemporaryFile('svn', 'tailor') |
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| 343 | log = open(rontf.name, "w") |
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| 344 | log.write('\n'.join(logmessage)) |
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| 345 | log.close() |
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| 346 | |
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| 347 | cmd = self.repository.command("commit", "--file", rontf.name) |
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| 348 | commit = ExternalCommand(cwd=self.basedir, command=cmd) |
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| 349 | |
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| 350 | if not entries: |
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| 351 | entries = ['.'] |
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| 352 | |
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| 353 | out = commit.execute(entries, stdout=PIPE, LANG='C')[0] |
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| 354 | |
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| 355 | if commit.exit_status: |
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| 356 | raise ChangesetApplicationFailure("%s returned status %d" % |
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| 357 | (str(commit), commit.exit_status)) |
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| 358 | line = out.readline() |
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| 359 | while line and not line.startswith('Committed revision '): |
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| 360 | if not line.startswith('Sending ') and \ |
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| 361 | not line.startswith('Transmitting file data ') and \ |
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| 362 | not line.startswith('Adding ') and \ |
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| 363 | not line.startswith('Deleting '): |
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| 364 | break |
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| 365 | line = out.readline() |
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| 366 | if not line.startswith('Committed revision '): |
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| 367 | raise ChangesetApplicationFailure("%s wrote unexpected line %r" % |
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| 368 | (str(commit), line)) |
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| 369 | revision = line[19:-2] |
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| 370 | |
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| 371 | if self.USE_PROPSET: |
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| 372 | cmd = self.repository.command("propset", "%(propname)s", |
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| 373 | "--quiet", "--revprop", |
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| 374 | "--revision", revision) |
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| 375 | propset = ExternalCommand(cwd=self.basedir, command=cmd) |
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| 376 | |
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| 377 | propset.execute(date.isoformat()+".000000Z", propname='svn:date') |
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| 378 | propset.execute(author, propname='svn:author') |
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| 379 | |
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| 380 | cmd = self.repository.command("update", "--quiet", |
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| 381 | "--revision", revision) |
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| 382 | ExternalCommand(cwd=self.basedir, command=cmd).execute() |
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| 383 | |
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| 384 | def _removePathnames(self, names): |
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| 385 | """ |
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| 386 | Remove some filesystem objects. |
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| 387 | """ |
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| 388 | |
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| 389 | cmd = self.repository.command("remove", "--quiet", "--force") |
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| 390 | remove = ExternalCommand(cwd=self.basedir, command=cmd) |
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| 391 | remove.execute(names) |
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| 392 | |
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| 393 | def _renamePathname(self, oldname, newname): |
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| 394 | """ |
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| 395 | Rename a filesystem object. |
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| 396 | """ |
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| 397 | |
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| 398 | cmd = self.repository.command("mv", "--quiet") |
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| 399 | move = ExternalCommand(cwd=self.basedir, command=cmd) |
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| 400 | move.execute(oldname, newname) |
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| 401 | if move.exit_status: |
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| 402 | # Subversion does not seem to allow |
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| 403 | # $ mv a.txt b.txt |
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| 404 | # $ svn mv a.txt b.txt |
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| 405 | # Here we are in this situation, since upstream VCS already |
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| 406 | # moved the item. OTOH, svn really treats "mv" as "cp+rm", |
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| 407 | # so we do the same here |
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| 408 | self._removePathnames([oldname]) |
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| 409 | self._addPathnames([newname]) |
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| 410 | |
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| 411 | def __createRepository(self, target_repository, target_module): |
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| 412 | """ |
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| 413 | Create a local repository. |
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| 414 | """ |
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| 415 | |
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| 416 | from os.path import join |
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| 417 | from sys import platform |
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| 418 | |
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| 419 | assert target_repository.startswith('file:///') |
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| 420 | repodir = target_repository[7:] |
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| 421 | cmd = self.repository.command("create", "--fs-type", "fsfs", |
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| 422 | svnadmin=True) |
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| 423 | svnadmin = ExternalCommand(command=cmd) |
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| 424 | svnadmin.execute(repodir) |
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| 425 | |
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| 426 | if svnadmin.exit_status: |
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| 427 | raise TargetInitializationFailure("Was not able to create a 'fsfs' " |
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| 428 | "svn repository at %r" % |
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| 429 | target_repository) |
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| 430 | if self.USE_PROPSET: |
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| 431 | hookname = join(repodir, 'hooks', 'pre-revprop-change') |
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| 432 | if platform == 'win32': |
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| 433 | hookname += '.bat' |
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| 434 | prehook = open(hookname, 'wU') |
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| 435 | if platform <> 'win32': |
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| 436 | prehook.write('#!/bin/sh\n') |
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| 437 | prehook.write('exit 0\n') |
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| 438 | prehook.close() |
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| 439 | if platform <> 'win32': |
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| 440 | from os import chmod |
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| 441 | chmod(hookname, 0755) |
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| 442 | |
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| 443 | if target_module and target_module <> '/': |
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| 444 | cmd = self.repository.command("mkdir", "-m", |
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| 445 | "This directory will host the " |
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| 446 | "upstream sources") |
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| 447 | svnmkdir = ExternalCommand(command=cmd) |
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| 448 | svnmkdir.execute(target_repository + target_module) |
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| 449 | if svnmkdir.exit_status: |
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| 450 | raise TargetInitializationFailure("Was not able to create the " |
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| 451 | "module %r, maybe more than " |
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| 452 | "one level directory?" % |
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| 453 | target_module) |
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| 454 | |
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| 455 | def _prepareTargetRepository(self): |
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| 456 | """ |
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| 457 | Check for target repository existence, eventually create it. |
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| 458 | """ |
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| 459 | |
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| 460 | if not self.repository.repository: |
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| 461 | return |
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| 462 | |
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| 463 | # Verify the existence of repository by listing its root |
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| 464 | cmd = self.repository.command("ls") |
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| 465 | svnls = ExternalCommand(command=cmd) |
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| 466 | svnls.execute(self.repository.repository) |
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| 467 | |
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| 468 | if svnls.exit_status: |
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| 469 | if self.repository.repository.startswith('file:///'): |
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| 470 | self.__createRepository(self.repository.repository, |
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| 471 | self.repository.module) |
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| 472 | else: |
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| 473 | raise TargetInitializationFailure("%r does not exist and " |
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| 474 | "cannot be created since " |
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| 475 | "it's not a local (file:///) " |
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| 476 | "repository" % |
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| 477 | self.repository.repository) |
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| 478 | |
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| 479 | def _prepareWorkingDirectory(self, source_repo): |
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| 480 | """ |
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| 481 | Checkout a working copy of the target SVN repository. |
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| 482 | """ |
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| 483 | |
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| 484 | from os.path import join, exists |
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| 485 | |
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| 486 | if not self.repository.repository or exists(join(self.basedir, '.svn')): |
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| 487 | return |
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| 488 | |
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| 489 | cmd = self.repository.command("co", "--quiet") |
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| 490 | svnco = ExternalCommand(command=cmd) |
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| 491 | svnco.execute("%s%s" % (self.repository.repository, |
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| 492 | self.repository.module), self.basedir) |
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| 493 | |
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| 494 | def _initializeWorkingDir(self): |
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| 495 | """ |
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| 496 | Add the given directory to an already existing svn working tree. |
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| 497 | """ |
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| 498 | |
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| 499 | from os.path import exists, join |
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| 500 | |
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| 501 | if not exists(join(self.basedir, '.svn')): |
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| 502 | raise TargetInitializationFailure("'%s' needs to be an SVN working copy already under SVN" % self.basedir) |
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| 503 | |
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| 504 | SyncronizableTargetWorkingDir._initializeWorkingDir(self) |
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