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Darwin/lib/python3.4/site-packages/pip/vcs/mercurial.py

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+import os
+import tempfile
+import re
+import sys
+from pip.util import call_subprocess
+from pip.util import display_path, rmtree
+from pip.log import logger
+from pip.vcs import vcs, VersionControl
+from pip.download import path_to_url
+from pip.backwardcompat import ConfigParser
+
+
+class Mercurial(VersionControl):
+    name = 'hg'
+    dirname = '.hg'
+    repo_name = 'clone'
+    schemes = ('hg', 'hg+http', 'hg+https', 'hg+ssh', 'hg+static-http')
+    bundle_file = 'hg-clone.txt'
+    guide = ('# This was a Mercurial repo; to make it a repo again run:\n'
+            'hg init\nhg pull %(url)s\nhg update -r %(rev)s\n')
+
+    def parse_vcs_bundle_file(self, content):
+        url = rev = None
+        for line in content.splitlines():
+            if not line.strip() or line.strip().startswith('#'):
+                continue
+            url_match = re.search(r'hg\s*pull\s*(.*)\s*', line)
+            if url_match:
+                url = url_match.group(1).strip()
+            rev_match = re.search(r'^hg\s*update\s*-r\s*(.*)\s*', line)
+            if rev_match:
+                rev = rev_match.group(1).strip()
+            if url and rev:
+                return url, rev
+        return None, None
+
+    def export(self, location):
+        """Export the Hg repository at the url to the destination location"""
+        temp_dir = tempfile.mkdtemp('-export', 'pip-')
+        self.unpack(temp_dir)
+        try:
+            call_subprocess(
+                [self.cmd, 'archive', location],
+                filter_stdout=self._filter, show_stdout=False, cwd=temp_dir)
+        finally:
+            rmtree(temp_dir)
+
+    def switch(self, dest, url, rev_options):
+        repo_config = os.path.join(dest, self.dirname, 'hgrc')
+        config = ConfigParser.SafeConfigParser()
+        try:
+            config.read(repo_config)
+            config.set('paths', 'default', url)
+            config_file = open(repo_config, 'w')
+            config.write(config_file)
+            config_file.close()
+        except (OSError, ConfigParser.NoSectionError):
+            e = sys.exc_info()[1]
+            logger.warn(
+                'Could not switch Mercurial repository to %s: %s'
+                % (url, e))
+        else:
+            call_subprocess([self.cmd, 'update', '-q'] + rev_options, cwd=dest)
+
+    def update(self, dest, rev_options):
+        call_subprocess([self.cmd, 'pull', '-q'], cwd=dest)
+        call_subprocess(
+            [self.cmd, 'update', '-q'] + rev_options, cwd=dest)
+
+    def obtain(self, dest):
+        url, rev = self.get_url_rev()
+        if rev:
+            rev_options = [rev]
+            rev_display = ' (to revision %s)' % rev
+        else:
+            rev_options = []
+            rev_display = ''
+        if self.check_destination(dest, url, rev_options, rev_display):
+            logger.notify('Cloning hg %s%s to %s'
+                          % (url, rev_display, display_path(dest)))
+            call_subprocess([self.cmd, 'clone', '--noupdate', '-q', url, dest])
+            call_subprocess([self.cmd, 'update', '-q'] + rev_options, cwd=dest)
+
+    def get_url(self, location):
+        url = call_subprocess(
+            [self.cmd, 'showconfig', 'paths.default'],
+            show_stdout=False, cwd=location).strip()
+        if self._is_local_repository(url):
+            url = path_to_url(url)
+        return url.strip()
+
+    def get_tag_revs(self, location):
+        tags = call_subprocess(
+            [self.cmd, 'tags'], show_stdout=False, cwd=location)
+        tag_revs = []
+        for line in tags.splitlines():
+            tags_match = re.search(r'([\w\d\.-]+)\s*([\d]+):.*$', line)
+            if tags_match:
+                tag = tags_match.group(1)
+                rev = tags_match.group(2)
+                if "tip" != tag:
+                    tag_revs.append((rev.strip(), tag.strip()))
+        return dict(tag_revs)
+
+    def get_branch_revs(self, location):
+        branches = call_subprocess(
+            [self.cmd, 'branches'], show_stdout=False, cwd=location)
+        branch_revs = []
+        for line in branches.splitlines():
+            branches_match = re.search(r'([\w\d\.-]+)\s*([\d]+):.*$', line)
+            if branches_match:
+                branch = branches_match.group(1)
+                rev = branches_match.group(2)
+                if "default" != branch:
+                    branch_revs.append((rev.strip(), branch.strip()))
+        return dict(branch_revs)
+
+    def get_revision(self, location):
+        current_revision = call_subprocess(
+            [self.cmd, 'parents', '--template={rev}'],
+            show_stdout=False, cwd=location).strip()
+        return current_revision
+
+    def get_revision_hash(self, location):
+        current_rev_hash = call_subprocess(
+            [self.cmd, 'parents', '--template={node}'],
+            show_stdout=False, cwd=location).strip()
+        return current_rev_hash
+
+    def get_src_requirement(self, dist, location, find_tags):
+        repo = self.get_url(location)
+        if not repo.lower().startswith('hg:'):
+            repo = 'hg+' + repo
+        egg_project_name = dist.egg_name().split('-', 1)[0]
+        if not repo:
+            return None
+        current_rev = self.get_revision(location)
+        current_rev_hash = self.get_revision_hash(location)
+        tag_revs = self.get_tag_revs(location)
+        branch_revs = self.get_branch_revs(location)
+        if current_rev in tag_revs:
+            # It's a tag
+            full_egg_name = '%s-%s' % (egg_project_name, tag_revs[current_rev])
+        elif current_rev in branch_revs:
+            # It's the tip of a branch
+            full_egg_name = '%s-%s' % (egg_project_name, branch_revs[current_rev])
+        else:
+            full_egg_name = '%s-dev' % egg_project_name
+        return '%s@%s#egg=%s' % (repo, current_rev_hash, full_egg_name)
+
+vcs.register(Mercurial)