for discussion: add tools/roll_pdfium.py

tools/roll_pdfium.py

Index: tools/roll_pdfium.py
diff --git a/tools/roll_angle.py b/tools/roll_pdfium.py
similarity index 91%
copy from tools/roll_angle.py
copy to tools/roll_pdfium.py
index 92323170631239bb16da2ad915d57447619bc6ed..2ac93bbaacba5c88a30548a3e758594328fea229 100755
--- a/tools/roll_angle.py
+++ b/tools/roll_pdfium.py
@@ -27,12 +27,12 @@ upload.verbosity = 0  # Errors only.
 CHROMIUM_GIT_URL = 'https://chromium.googlesource.com/chromium/src.git'
 CL_ISSUE_RE = re.compile('^Issue number: ([0-9]+) \((.*)\)$')
 RIETVELD_URL_RE = re.compile('^https?://(.*)/(.*)')
-ROLL_BRANCH_NAME = 'special_angle_roll_branch'
+ROLL_BRANCH_NAME = 'special_pdfium_roll_branch'
 TRYJOB_STATUS_SLEEP_SECONDS = 30
 
 # Use a shell for subcommands on Windows to get a PATH search.
 IS_WIN = sys.platform.startswith('win')
-ANGLE_PATH = os.path.join('third_party', 'angle')
+PDFIUM_PATH = os.path.join('third_party', 'pdfium')
 
 CommitInfo = collections.namedtuple('CommitInfo', ['git_commit',
                                                    'git_repo_url'])
@@ -71,7 +71,7 @@ def _ParseDepsDict(deps_content):
   return local_scope
 
 
-def _GenerateCLDescriptionCommand(angle_current, angle_new, bugs):
+def _GenerateCLDescriptionCommand(pdfium_current, pdfium_new, bugs):
   def GetChangeString(current_hash, new_hash):
     return '%s..%s' % (current_hash[0:7], new_hash[0:7]);
 
@@ -84,14 +84,14 @@ def _GenerateCLDescriptionCommand(angle_current, angle_new, bugs):
       bug_str += str(bug) + ','
     return bug_str.rstrip(',')
 
-  if angle_current.git_commit != angle_new.git_commit:
-    change_str = GetChangeString(angle_current.git_commit,
-                                 angle_new.git_commit)
-    changelog_url = GetChangeLogURL(angle_current.git_repo_url,
+  if pdfium_current.git_commit != pdfium_new.git_commit:
+    change_str = GetChangeString(pdfium_current.git_commit,
+                                 pdfium_new.git_commit)
+    changelog_url = GetChangeLogURL(pdfium_current.git_repo_url,
                                     change_str)
 
   return [
-    '-m', 'Roll ANGLE ' + change_str,
+    '-m', 'Roll PDFium ' + change_str,
     '-m', '%s' % changelog_url,
     '-m', GetBugString(bugs),
     '-m', 'TEST=bots',
@@ -173,11 +173,11 @@ class AutoRoller(object):
     logging.debug('Dirty/unversioned files:\n%s', '\n'.join(lines))
     return False
 
-  def _GetBugList(self, path_below_src, angle_current, angle_new):
+  def _GetBugList(self, path_below_src, pdfium_current, pdfium_new):
     working_dir = os.path.join(self._chromium_src, path_below_src)
     lines = self._RunCommand(
         ['git','log',
-            '%s..%s' % (angle_current.git_commit, angle_new.git_commit)],
+            '%s..%s' % (pdfium_current.git_commit, pdfium_new.git_commit)],
         working_dir=working_dir).split('\n')
     bugs = set()
     for line in lines:
@@ -190,7 +190,7 @@ class AutoRoller(object):
             bugs.add(int(bug_string))
           except:
             # skip this, it may be a project specific bug such as
-            # "angleproject:X" or an ill-formed BUG= message
+            # "pdfium:X" or an ill-formed BUG= message
             pass
     return bugs
 
@@ -229,24 +229,24 @@ class AutoRoller(object):
     # Parse current hashes.
     deps_filename = os.path.join(self._chromium_src, 'DEPS')
     deps = _ParseDepsFile(deps_filename)
-    angle_current = self._GetDepsCommitInfo(deps, ANGLE_PATH)
+    pdfium_current = self._GetDepsCommitInfo(deps, PDFIUM_PATH)
 
     # Find ToT revisions.
-    angle_latest = self._GetCommitInfo(ANGLE_PATH)
+    pdfium_latest = self._GetCommitInfo(PDFIUM_PATH)
 
     if IS_WIN:
       # Make sure the roll script doesn't use windows line endings
       self._RunCommand(['git', 'config', 'core.autocrlf', 'true'])
 
-    self._UpdateDep(deps_filename, ANGLE_PATH, angle_latest)
+    self._UpdateDep(deps_filename, PDFIUM_PATH, pdfium_latest)
 
     if self._IsTreeClean():
       logging.debug('Tree is clean - no changes detected.')
       self._DeleteRollBranch()
     else:
-      bugs = self._GetBugList(ANGLE_PATH, angle_current, angle_latest)
+      bugs = self._GetBugList(PDFIUM_PATH, pdfium_current, pdfium_latest)
       description = _GenerateCLDescriptionCommand(
-          angle_current, angle_latest, bugs)
+          pdfium_current, pdfium_latest, bugs)
       logging.debug('Committing changes locally.')
       self._RunCommand(['git', 'add', '--update', '.'])
       self._RunCommand(['git', 'commit'] + description)
@@ -315,7 +315,7 @@ class AutoRoller(object):
 
 def main():
   parser = argparse.ArgumentParser(
-      description='Auto-generates a CL containing an ANGLE roll.')
+      description='Auto-generates a CL containing an PDFium roll.')
   parser.add_argument('--abort',
     help=('Aborts a previously prepared roll. '
           'Closes any associated issues and deletes the roll branches'),