| 1 | #! /usr/bin/python |
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| 2 | # -*- mode: python; coding: utf-8 -*- |
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| 3 | # :Progetto: vcpx -- Frontend capabilities |
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| 4 | # :Creato: dom 04 lug 2004 00:40:54 CEST |
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| 5 | # :Autore: Lele Gaifax <lele@nautilus.homeip.net> |
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| 6 | # |
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| 7 | |
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| 8 | """ |
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| 9 | Implement the basic capabilities of the frontend. |
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| 10 | |
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| 11 | This implementation stores the relevant project information, needed to |
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| 12 | keep the whole thing going on, such as the last synced revision, in a |
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| 13 | unversioned file named `tailor.info` at the root. |
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| 14 | """ |
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| 15 | |
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| 16 | __docformat__ = 'reStructuredText' |
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| 17 | |
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| 18 | from optparse import OptionParser, OptionGroup, make_option |
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| 19 | from dualwd import DualWorkingDir |
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| 20 | from source import InvocationError |
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| 21 | |
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| 22 | STATUS_FILENAME = 'tailor.info' |
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| 23 | LOG_FILENAME = 'tailor.log' |
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| 24 | |
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| 25 | def relpathto(source, dest): |
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| 26 | """ |
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| 27 | Compute the relative path needed to point `source` from `dest`. |
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| 28 | |
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| 29 | Warning: `dest` is assumed to be a directory. |
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| 30 | """ |
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| 31 | |
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| 32 | from os.path import abspath, split, commonprefix |
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| 33 | |
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| 34 | source = abspath(source) |
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| 35 | dest = abspath(dest) |
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| 36 | |
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| 37 | if source.startswith(dest): |
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| 38 | return source[len(dest)+1:] |
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| 39 | |
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| 40 | prefix = commonprefix([source, dest]) |
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| 41 | |
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| 42 | source = source[len(prefix):] |
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| 43 | dest = dest[len(prefix):] |
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| 44 | |
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| 45 | return '../' * len(dest.split('/')) + source |
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| 46 | |
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| 47 | |
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| 48 | class TailorConfig(object): |
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| 49 | """ |
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| 50 | Configuration of a set of tailorized projects. |
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| 51 | |
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| 52 | The configuration is stored in a persistent dictionary keyed on the |
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| 53 | relative path of each project. The information about a single project |
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| 54 | is another dictionary. |
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| 55 | """ |
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| 56 | |
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| 57 | def __init__(self, options): |
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| 58 | from os.path import abspath, split |
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| 59 | |
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| 60 | self.options = options |
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| 61 | self.configfile = abspath(options.configfile) |
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| 62 | self.basedir = split(self.configfile)[0] |
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| 63 | |
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| 64 | def __call__(self, args): |
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| 65 | from os.path import join, exists, split |
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| 66 | from source import ChangesetApplicationFailure |
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| 67 | |
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| 68 | self.__load() |
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| 69 | |
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| 70 | if len(args) == 0: |
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| 71 | fromconfig = True |
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| 72 | if self.options.bootstrap: |
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| 73 | f = lambda x: not exists(x) |
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| 74 | else: |
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| 75 | f = exists |
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| 76 | |
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| 77 | args = [p for p in [join(self.basedir, r) |
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| 78 | for r in self.config.keys()] if f(p)] |
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| 79 | args.sort() |
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| 80 | else: |
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| 81 | fromconfig = False |
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| 82 | |
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| 83 | try: |
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| 84 | for root in args: |
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| 85 | if self.options.bootstrap: |
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| 86 | if not (fromconfig or self.options.repository): |
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| 87 | raise InvocationError('Need a repository to bootstrap ' |
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| 88 | '%r' % root, '--bootstrap') |
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| 89 | else: |
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| 90 | if not self.config.has_key(relpathto(root, self.basedir)): |
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| 91 | raise UnknownProjectError("Project %r does not exist" % |
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| 92 | root) |
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| 93 | |
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| 94 | tailored = TailorizedProject(root, self.options.verbose, self) |
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| 95 | |
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| 96 | if self.options.bootstrap: |
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| 97 | if fromconfig: |
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| 98 | info = self.loadProject(root=root) |
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| 99 | self.options.source_kind = info['source_kind'] |
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| 100 | self.options.target_kind = info['target_kind'] |
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| 101 | self.options.repository = info['upstream_repos'] |
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| 102 | self.options.module = info['module'] |
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| 103 | self.options.subdir = info.get('subdir', |
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| 104 | split(info['module'])[1]) |
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| 105 | self.options.revision = info['upstream_revision'] |
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| 106 | |
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| 107 | tailored.bootstrap(self.options.source_kind, |
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| 108 | self.options.target_kind, |
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| 109 | self.options.repository, |
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| 110 | self.options.module, |
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| 111 | self.options.revision, |
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| 112 | self.options.subdir) |
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| 113 | elif self.options.migrate: |
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| 114 | tailored.migrateConfiguration() |
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| 115 | elif self.options.update: |
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| 116 | try: |
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| 117 | tailored.update(self.options.single_commit, |
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| 118 | self.options.concatenate_logs) |
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| 119 | except ChangesetApplicationFailure, e: |
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| 120 | print "Skipping '%s' because of errors:" % root, e |
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| 121 | finally: |
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| 122 | self.__save() |
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| 123 | |
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| 124 | def __save(self): |
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| 125 | from pprint import pprint |
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| 126 | |
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| 127 | configfile = open(self.configfile, 'w') |
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| 128 | pprint(self.config, configfile) |
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| 129 | configfile.close() |
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| 130 | |
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| 131 | def __load(self): |
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| 132 | from os.path import exists |
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| 133 | |
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| 134 | if exists(self.options.configfile): |
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| 135 | configfile = open(self.configfile) |
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| 136 | self.config = eval(configfile.read()) |
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| 137 | configfile.close() |
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| 138 | else: |
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| 139 | self.config = {} |
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| 140 | |
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| 141 | def loadProject(self, project=None, root=None): |
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| 142 | from os.path import split |
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| 143 | |
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| 144 | relpath = relpathto(project and project.root or root, self.basedir) |
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| 145 | |
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| 146 | info = self.config.get(relpath) |
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| 147 | if info and project: |
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| 148 | project.source_kind = info['source_kind'] |
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| 149 | project.target_kind = info['target_kind'] |
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| 150 | project.module = info['module'] |
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| 151 | project.subdir = info.get('subdir', split(project.module)[1]) |
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| 152 | project.upstream_repos = info['upstream_repos'] |
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| 153 | project.upstream_revision = info['upstream_revision'] |
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| 154 | |
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| 155 | return info |
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| 156 | |
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| 157 | def saveProject(self, project): |
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| 158 | relpath = relpathto(project.root, self.basedir) |
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| 159 | |
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| 160 | self.config[relpath] = { |
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| 161 | 'source_kind': project.source_kind, |
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| 162 | 'target_kind': project.target_kind, |
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| 163 | 'module': project.module, |
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| 164 | 'subdir': project.subdir, |
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| 165 | 'upstream_repos': project.upstream_repos, |
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| 166 | 'upstream_revision': project.upstream_revision, |
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| 167 | } |
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| 168 | |
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| 169 | |
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| 170 | class TailorizedProject(object): |
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| 171 | """ |
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| 172 | A TailorizedProject has two main capabilities: it may be bootstrapped |
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| 173 | from an upstream repository or brought in sync with current upstream |
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| 174 | revision. |
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| 175 | """ |
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| 176 | |
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| 177 | def __init__(self, root, verbose=False, config=None): |
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| 178 | import logging |
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| 179 | from os import makedirs |
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| 180 | from os.path import join, exists, split |
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| 181 | |
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| 182 | self.root = root |
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| 183 | if not exists(root): |
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| 184 | makedirs(root) |
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| 185 | |
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| 186 | self.verbose = verbose |
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| 187 | self.logger = logging.getLogger('tailor.%s' % split(root)[1]) |
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| 188 | hdlr = logging.FileHandler(join(root, LOG_FILENAME)) |
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| 189 | formatter = logging.Formatter('%(asctime)s [%(levelname)s] %(message)s') |
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| 190 | hdlr.setFormatter(formatter) |
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| 191 | self.logger.addHandler(hdlr) |
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| 192 | self.logger.setLevel(logging.INFO) |
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| 193 | |
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| 194 | self.source_kind = self.target_kind = None |
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| 195 | |
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| 196 | self.config = config |
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| 197 | |
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| 198 | def migrateConfiguration(self): |
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| 199 | self.__loadOldStatus() |
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| 200 | self.__saveStatus() |
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| 201 | |
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| 202 | def __saveOldStatus(self): |
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| 203 | from os.path import join |
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| 204 | |
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| 205 | statusfilename = join(self.root, STATUS_FILENAME) |
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| 206 | f = open(statusfilename, 'w') |
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| 207 | print >>f, self.source_kind |
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| 208 | print >>f, self.target_kind |
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| 209 | print >>f, self.module |
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| 210 | print >>f, self.upstream_repos |
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| 211 | print >>f, self.upstream_revision |
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| 212 | print >>f, self.subdir |
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| 213 | f.close() |
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| 214 | |
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| 215 | def __saveStatus(self): |
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| 216 | """ |
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| 217 | Save relevant project information in a persistent way. |
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| 218 | """ |
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| 219 | |
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| 220 | if self.config: |
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| 221 | self.config.saveProject(self) |
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| 222 | else: |
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| 223 | self.__saveOldStatus() |
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| 224 | |
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| 225 | def __loadOldStatus(self): |
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| 226 | from os.path import join, split |
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| 227 | |
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| 228 | statusfilename = join(self.root, STATUS_FILENAME) |
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| 229 | f = open(statusfilename) |
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| 230 | self.source_kind = f.readline()[:-1] |
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| 231 | self.target_kind = f.readline()[:-1] |
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| 232 | self.module = f.readline()[:-1] |
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| 233 | self.upstream_repos = f.readline()[:-1] |
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| 234 | self.upstream_revision = f.readline()[:-1] |
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| 235 | subdir = f.readline() |
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| 236 | if subdir: |
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| 237 | self.subdir = subdir[:-1] |
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| 238 | else: |
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| 239 | self.subdir = split(self.module)[1] |
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| 240 | f.close() |
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| 241 | |
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| 242 | def __loadStatus(self): |
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| 243 | """ |
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| 244 | Load relevant project information. |
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| 245 | """ |
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| 246 | |
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| 247 | if self.config: |
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| 248 | self.config.loadProject(self) |
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| 249 | else: |
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| 250 | self.__loadOldStatus() |
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| 251 | |
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| 252 | def bootstrap(self, source_kind, target_kind, |
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| 253 | repository, module, revision, subdir): |
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| 254 | """ |
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| 255 | Bootstrap a new tailorized module. |
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| 256 | |
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| 257 | Extract a copy of the `repository` at given `revision` in the `root` |
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| 258 | directory and initialize a target repository with its content. |
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| 259 | |
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| 260 | The actual information on the project are stored in a text file. |
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| 261 | """ |
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| 262 | |
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| 263 | self.logger.info("Bootstrapping '%s'" % (self.root,)) |
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| 264 | |
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| 265 | dwd = DualWorkingDir(source_kind, target_kind) |
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| 266 | self.logger.info("getting %s revision '%s' of '%s' from '%s'" % ( |
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| 267 | source_kind, revision, module, repository)) |
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| 268 | |
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| 269 | try: |
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| 270 | actual = dwd.checkoutUpstreamRevision(self.root, repository, |
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| 271 | module, revision, |
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| 272 | subdir=subdir, |
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| 273 | logger=self.logger) |
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| 274 | except: |
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| 275 | self.logger.exception('Checkout failed!') |
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| 276 | raise |
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| 277 | |
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| 278 | # the above machinery checked out a copy under of the wc |
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| 279 | # in the directory named as the last component of the module's name |
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| 280 | |
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| 281 | if not subdir: |
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| 282 | subdir = module |
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| 283 | |
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| 284 | try: |
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| 285 | dwd.initializeNewWorkingDir(self.root, repository, subdir, actual) |
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| 286 | except: |
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| 287 | self.logger.exception('Working copy initialization failed!') |
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| 288 | raise |
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| 289 | |
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| 290 | self.source_kind = source_kind |
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| 291 | self.target_kind = target_kind |
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| 292 | self.upstream_repos = repository |
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| 293 | self.module = module |
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| 294 | self.subdir = subdir |
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| 295 | self.upstream_revision = actual |
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| 296 | |
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| 297 | self.__saveStatus() |
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| 298 | |
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| 299 | self.logger.info("Bootstrap completed") |
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| 300 | |
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| 301 | def applyable(self, root, changeset): |
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| 302 | """ |
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| 303 | Print the changeset being applied. |
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| 304 | """ |
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| 305 | |
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| 306 | if self.verbose: |
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| 307 | print "Changeset %s:" % changeset.revision |
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| 308 | print changeset.log |
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| 309 | |
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| 310 | return True |
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| 311 | |
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| 312 | def applied(self, root, changeset): |
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| 313 | """ |
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| 314 | Save current status. |
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| 315 | """ |
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| 316 | |
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| 317 | self.upstream_revision = changeset.revision |
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| 318 | self.__saveStatus() |
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| 319 | if self.verbose: |
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| 320 | print |
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| 321 | |
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| 322 | def update(self, single_commit, concatenate_logs): |
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| 323 | """ |
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| 324 | Update an existing tailorized project. |
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| 325 | |
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| 326 | Fetch the upstream changesets and apply them to the working copy. |
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| 327 | Use the information stored in the `tailor.info` file to ask just |
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| 328 | the new changeset since last bootstrap/synchronization. |
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| 329 | """ |
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| 330 | |
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| 331 | from os.path import join |
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| 332 | |
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| 333 | self.__loadStatus() |
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| 334 | |
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| 335 | proj = join(self.root, self.subdir) |
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| 336 | self.logger.info("Updating '%s' from revision '%s'" % ( |
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| 337 | self.module, self.upstream_revision)) |
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| 338 | |
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| 339 | if self.verbose: |
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| 340 | print "\nUpdating '%s' from revision '%s'" % (self.module, |
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| 341 | self.upstream_revision) |
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| 342 | |
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| 343 | dwd = DualWorkingDir(self.source_kind, self.target_kind) |
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| 344 | changesets = dwd.getUpstreamChangesets(proj, self.upstream_revision) |
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| 345 | |
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| 346 | nchanges = len(changesets) |
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| 347 | if nchanges: |
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| 348 | if self.verbose: |
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| 349 | print "Applying %d upstream changesets" % nchanges |
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| 350 | |
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| 351 | try: |
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| 352 | l,c = dwd.applyUpstreamChangesets(proj, changesets, |
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| 353 | applyable=self.applyable, |
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| 354 | applied=self.applied, |
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| 355 | logger=self.logger, |
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| 356 | delayed_commit=single_commit) |
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| 357 | except: |
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| 358 | self.logger.exception('Upstream change application failed') |
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| 359 | |
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| 360 | if l: |
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| 361 | if single_commit: |
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| 362 | dwd.commitDelayedChangesets(proj, concatenate_logs) |
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| 363 | |
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| 364 | self.logger.info("Update completed, now at revision '%s'" % ( |
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| 365 | self.upstream_revision,)) |
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| 366 | else: |
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| 367 | self.logger.info("Update completed with no upstream changes") |
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| 368 | |
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| 369 | |
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| 370 | GENERAL_OPTIONS = [ |
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| 371 | make_option("-D", "--debug", dest="debug", |
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| 372 | action="store_true", default=False, |
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| 373 | help="Print each executed command."), |
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| 374 | make_option("-v", "--verbose", dest="verbose", |
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| 375 | action="store_true", default=False, |
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| 376 | help="Be verbose, echoing the changelog of each applied " |
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| 377 | "changeset to stdout."), |
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| 378 | make_option("--configfile", metavar="CONFNAME", |
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| 379 | help="Centralized storage of projects info. With this " |
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| 380 | "option and no other arguments tailor will update " |
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| 381 | "every project found in the config file."), |
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| 382 | make_option("--migrate-config", dest="migrate", |
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| 383 | action="store_true", default=False, |
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| 384 | help="Migrate old configuration to new centralized storage."), |
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| 385 | ] |
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| 386 | |
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| 387 | UPDATE_OPTIONS = [ |
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| 388 | make_option("--update", action="store_true", default=True, |
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| 389 | help="Update the given repositories, fetching upstream " |
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| 390 | "changesets, applying and re-registering each one. " |
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| 391 | "This is the default behaviour."), |
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| 392 | make_option("-S", "--single-commit", action="store_true", default=False, |
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| 393 | help="Do a single, final commit on the target VC, effectively " |
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| 394 | "grouping together all upstream changeset into a single " |
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| 395 | "one, from the target VC point of view."), |
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| 396 | make_option("-C", "--concatenate-logs", action="store_true", default=False, |
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| 397 | help="With --single-commit, concatenate each changeset " |
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| 398 | "message log to the final changelog, instead of just " |
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| 399 | "the name of the patch."), |
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| 400 | ] |
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| 401 | |
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| 402 | BOOTSTRAP_OPTIONS = [ |
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| 403 | make_option("-b", "--bootstrap", action="store_true", default=False, |
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| 404 | help="Bootstrap mode, that is the initial copy of the " |
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| 405 | "upstream tree, given as an URI (see -R) and maybe " |
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| 406 | "a revision (-r). This overrides --update."), |
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| 407 | make_option("-s", "--source-kind", dest="source_kind", metavar="VC-KIND", |
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| 408 | help="Select the backend for the upstream source " |
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| 409 | "version control VC-KIND. Default is 'cvs'.", |
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| 410 | default="cvs"), |
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| 411 | make_option("-t", "--target-kind", dest="target_kind", metavar="VC-KIND", |
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| 412 | help="Select VC-KIND as backend for the shadow repository, " |
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| 413 | "with 'darcs' as default.", |
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| 414 | default="darcs"), |
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| 415 | make_option("-R", "--repository", dest="repository", metavar="REPOS", |
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| 416 | help="Specify the upstream repository, from where bootstrap " |
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| 417 | "will checkout the module. REPOS syntax depends on " |
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| 418 | "the source version control kind."), |
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| 419 | make_option("-m", "--module", dest="module", metavar="MODULE", |
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| 420 | help="Specify the module to checkout at bootstrap time."), |
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| 421 | make_option("-r", "--revision", dest="revision", metavar="REV", |
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| 422 | help="Specify the revision bootstrap should checkout. REV " |
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| 423 | "must be a valid 'name' for a revision in the upstream " |
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| 424 | "version control kind. For CVS it may be a tag/branch. " |
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| 425 | "'HEAD', the default, means the latest version in all " |
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| 426 | "backends.", |
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| 427 | default="HEAD"), |
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| 428 | make_option("--subdir", metavar="DIR", |
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| 429 | help="Force the subdirectory where the checkout will happen, " |
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| 430 | "by default it's the tail part of the module name."), |
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| 431 | ] |
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| 432 | |
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| 433 | class ExistingProjectError(Exception): |
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| 434 | """ |
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| 435 | Raised when, in bootstrap mode, the directory for the project is already |
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| 436 | there. |
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| 437 | """ |
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| 438 | |
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| 439 | class UnknownProjectError(Exception): |
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| 440 | """ |
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| 441 | Raised when, in normal mode, the directory for the project does not |
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| 442 | exist. |
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| 443 | """ |
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| 444 | |
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| 445 | class ProjectNotTailored(Exception): |
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| 446 | """ |
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| 447 | Raised when trying to do something on a project that has not been |
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| 448 | tailored. |
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| 449 | """ |
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| 450 | |
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| 451 | def main(): |
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| 452 | """ |
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| 453 | Script entry point. |
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| 454 | |
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| 455 | Parse the command line options and arguments, and for each |
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| 456 | specified working copy directory (the current working directory by |
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| 457 | default) execute the tailorization steps. |
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| 458 | """ |
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| 459 | |
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| 460 | from os import getcwd, chdir |
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| 461 | from os.path import abspath, exists, join |
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| 462 | from shwrap import SystemCommand |
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| 463 | |
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| 464 | parser = OptionParser(usage='%prog [options] [project ...]', |
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| 465 | option_list=GENERAL_OPTIONS) |
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| 466 | |
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| 467 | bsoptions = OptionGroup(parser, "Bootstrap options") |
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| 468 | bsoptions.add_options(BOOTSTRAP_OPTIONS) |
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| 469 | |
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| 470 | upoptions = OptionGroup(parser, "Update options") |
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| 471 | upoptions.add_options(UPDATE_OPTIONS) |
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| 472 | |
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| 473 | parser.add_option_group(bsoptions) |
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| 474 | parser.add_option_group(upoptions) |
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| 475 | |
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| 476 | options, args = parser.parse_args() |
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| 477 | |
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| 478 | SystemCommand.VERBOSE = options.debug |
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| 479 | |
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| 480 | if options.configfile: |
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| 481 | config = TailorConfig(options) |
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| 482 | |
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| 483 | config(map(abspath, args)) |
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| 484 | else: |
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| 485 | # Good (?) old way |
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| 486 | |
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| 487 | config = None |
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| 488 | |
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| 489 | base = getcwd() |
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| 490 | |
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| 491 | if len(args) == 0: |
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| 492 | args.append(base) |
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| 493 | |
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| 494 | while args: |
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| 495 | chdir(base) |
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| 496 | |
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| 497 | proj = args.pop(0) |
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| 498 | root = abspath(proj) |
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| 499 | |
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| 500 | if options.bootstrap: |
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| 501 | if exists(join(root, STATUS_FILENAME)): |
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| 502 | raise ExistingProjectError( |
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| 503 | "Project %r cannot be bootstrapped twice" % proj) |
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| 504 | |
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| 505 | if not options.repository: |
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| 506 | raise InvocationError('Need a repository to bootstrap %r' % |
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| 507 | proj) |
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| 508 | else: |
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| 509 | if not exists(proj): |
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| 510 | raise UnknownProjectError("Project %r does not exist" % |
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| 511 | proj) |
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| 512 | |
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| 513 | if not exists(join(root, STATUS_FILENAME)): |
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| 514 | raise UnknownProjectError( |
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| 515 | "%r is not a tailorized project" % proj) |
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| 516 | |
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| 517 | tailored = TailorizedProject(root, options.verbose, config) |
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| 518 | |
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| 519 | if options.bootstrap: |
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| 520 | tailored.bootstrap(options.source_kind, options.target_kind, |
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| 521 | options.repository, |
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| 522 | options.module, |
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| 523 | options.revision, |
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| 524 | options.subdir) |
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| 525 | elif options.update: |
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| 526 | tailored.update(options.single_commit, |
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| 527 | options.concatenate_logs) |
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| 528 | |
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