Add make_version_header tool for populating libcef.dll version number and copyright year via version.h header file (issue #108).

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@224 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

tools/make_version_header.py

@@ -0,0 +1,82 @@
+# Copyright (c) 2011 The Chromium Embedded Framework Authors. All rights
+# reserved. Use of this source code is governed by a BSD-style license that
+# can be found in the LICENSE file.
+
+from cef_parser import *
+import datetime
+from optparse import OptionParser
+import os
+import shutil
+import sys
+
+# cannot be loaded as a module
+if __name__ != "__main__":
+    sys.stderr.write('This file cannot be loaded as a module!')
+    sys.exit()
+
+
+# parse command-line options
+disc = """
+This utility creates the version header file.
+"""
+
+parser = OptionParser(description=disc)
+parser.add_option('--header', dest='header', metavar='FILE',
+                  help='output version header file [required]')
+parser.add_option('-q', '--quiet',
+                  action='store_true', dest='quiet', default=False,
+                  help='do not output detailed status information')
+(options, args) = parser.parse_args()
+
+# the header option is required
+if options.header is None:
+    parser.print_help(sys.stdout)
+    sys.exit()
+
+def get_revision():
+    """ Retrieves the revision number from stdin. """
+    try:
+        # read the revision number
+        for line in sys.stdin:
+            if line[0:9] == "Revision:":
+                return line[10:-1];
+        raise IOError("Revision line not found.")
+    except IOError, (errno, strerror):
+        sys.stderr.write('Failed to read revision from stdin: ' + strerror)
+        raise
+
+def get_year():
+    """ Returns the current year. """
+    return str(datetime.datetime.now().year)
+
+def write_svn_header(file):
+    """ Creates the header file for the current revision if the revision has
+        changed or if the file doesn't already exist. """
+    if file_exists(file):
+        oldcontents = read_file(file)
+    else:
+        oldcontents = ''
+
+    newcontents = '// This file is generated by the make_version_header.py tool.\n'+\
+                  '#ifndef _VERSION_H\n'+\
+                  '#define _VERSION_H\n'+\
+                  '\n'+\
+                  '#define SVN_REVISION ' + get_revision() + '\n'+\
+                  '#define COPYRIGHT_YEAR ' + get_year() + '\n'+\
+                  '\n'+\
+                  '#define DO_MAKE_STRING(p) #p\n'+\
+                  '#define MAKE_STRING(p) DO_MAKE_STRING(p)\n'+\
+                  '\n'+\
+                  '#endif\n'
+    if newcontents != oldcontents:
+        write_file(file, newcontents)
+        return True
+
+    return False
+
+written = write_svn_header(options.header)
+if not options.quiet:
+  if written:
+    sys.stdout.write('File '+options.header+' updated.\n')
+  else:
+    sys.stdout.write('File '+options.header+' is already up to date.\n')