cef/tools/cef_api_hash.py

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# Copyright (c) 2013 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 file_util import *
import os
import re
import shutil
import string
import sys
import textwrap
import time
import itertools
import hashlib
class cef_api_hash:
""" CEF API hash calculator """
def __init__(self, headerdir, debugdir = None, verbose = False):
if headerdir is None or len(headerdir) == 0:
raise AssertionError("headerdir is not specified")
self.__headerdir = headerdir;
self.__debugdir = debugdir;
self.__verbose = verbose;
self.__debug_enabled = not (self.__debugdir is None) and len(self.__debugdir) > 0;
self.platforms = [ "windows", "macosx", "linux" ];
self.platform_files = {
"windows": [
"internal/cef_types_win.h"
],
"macosx": [
"internal/cef_types_mac.h",
],
"linux": [
"internal/cef_types_linux.h"
]
};
self.included_files = [
"cef_trace_event.h"
];
self.excluded_files = [
"cef_version.h",
"internal/cef_tuple.h",
"internal/cef_types_wrappers.h",
"internal/cef_string_wrappers.h",
"internal/cef_win.h",
"internal/cef_mac.h",
"internal/cef_linux.h",
];
def calculate(self):
filenames = [filename for filename in self.__get_filenames() if not filename in self.excluded_files]
objects = []
for filename in filenames:
if self.__verbose:
print "Processing " + filename + "..."
content = read_file(os.path.join(self.__headerdir, filename), True)
platforms = list([p for p in self.platforms if self.__is_platform_filename(filename, p)])
# Parse cef_string.h happens in special case: grab only defined CEF_STRING_TYPE_xxx declaration
content_objects = None
if filename == "internal/cef_string.h":
content_objects = self.__parse_string_type(content)
else:
content_objects = self.__parse_objects(content)
for o in content_objects:
o["text"] = self.__prepare_text(o["text"])
o["platforms"] = platforms
o["filename"] = filename
objects.append(o)
# objects will be sorted including filename, to make stable universal hashes
objects = sorted(objects, key = lambda o: o["name"] + "@" + o["filename"])
if self.__debug_enabled:
namelen = max([len(o["name"]) for o in objects])
filenamelen = max([len(o["filename"]) for o in objects])
dumpsig = [];
for o in objects:
dumpsig.append(format(o["name"], str(namelen) + "s") + "|" + format(o["filename"], "" + str(filenamelen) + "s") + "|" + o["text"]);
self.__write_debug_file("objects.txt", dumpsig)
revisions = { };
for platform in itertools.chain(["universal"], self.platforms):
sig = self.__get_final_sig(objects, platform)
if self.__debug_enabled:
self.__write_debug_file(platform + ".sig", sig)
rev = hashlib.sha1(sig).digest();
revstr = ''.join(format(ord(i),'0>2x') for i in rev)
revisions[platform] = revstr
return revisions
def __parse_objects(self, content):
""" Returns array of objects in content file. """
objects = []
content = re.sub("//.*\n", "", content)
# function declarations
for m in re.finditer("\nCEF_EXPORT\s+?.*?\s+?(\w+)\s*?\(.*?\)\s*?;", content, flags = re.DOTALL):
object = {
"name": m.group(1),
"text": m.group(0).strip()
}
objects.append(object)
# structs
for m in re.finditer("\ntypedef\s+?struct\s+?(\w+)\s+?\{.*?\}\s+?(\w+)\s*?;", content, flags = re.DOTALL):
object = {
"name": m.group(2),
"text": m.group(0).strip()
}
objects.append(object)
# enums
for m in re.finditer("\nenum\s+?(\w+)\s+?\{.*?\}\s*?;", content, flags = re.DOTALL):
object = {
"name": m.group(1),
"text": m.group(0).strip()
}
objects.append(object)
# typedefs
for m in re.finditer("\ntypedef\s+?.*?\s+(\w+);", content, flags = 0):
object = {
"name": m.group(1),
"text": m.group(0).strip()
}
objects.append(object)
return objects
def __parse_string_type(self, content):
""" Grab defined CEF_STRING_TYPE_xxx """
objects = []
for m in re.finditer("\n\s*?#\s*?define\s+?(CEF_STRING_TYPE_\w+)\s+?.*?\n", content, flags = 0):
object = {
"name": m.group(1),
"text": m.group(0),
}
objects.append(object)
return objects
def __prepare_text(self, text):
text = text.strip()
text = re.sub("\s+", " ", text);
text = re.sub("\(\s+", "(", text);
return text
def __get_final_sig(self, objects, platform):
sig = []
for o in objects:
if platform == "universal" or platform in o["platforms"]:
sig.append(o["text"])
return "\n".join(sig)
def __get_filenames(self):
""" Returns file names to be processed, relative to headerdir """
headers = [os.path.join(self.__headerdir, filename) for filename in self.included_files];
headers = itertools.chain(headers, get_files(os.path.join(self.__headerdir, "capi", "*.h")))
headers = itertools.chain(headers, get_files(os.path.join(self.__headerdir, "internal", "*.h")))
for v in self.platform_files.values():
headers = itertools.chain(headers, [os.path.join(self.__headerdir, f) for f in v])
normalized = [os.path.relpath(filename, self.__headerdir) for filename in headers];
normalized = [f.replace('\\', '/').lower() for f in normalized];
return list(set(normalized));
def __is_platform_filename(self, filename, platform):
if platform == "universal":
return True
if not platform in self.platform_files:
return False
listed = False
for p in self.platforms:
if filename in self.platform_files[p]:
if p == platform:
return True
else:
listed = True
return not listed
def __write_debug_file(self, filename, content):
make_dir(self.__debugdir);
outfile = os.path.join(self.__debugdir, filename);
dir = os.path.dirname(outfile);
make_dir(dir);
if not isinstance(content, basestring):
content = "\n".join(content)
write_file(outfile, content)
if __name__ == "__main__":
from optparse import OptionParser
import time
disc = """
This utility calculates CEF API hash.
"""
parser = OptionParser(description=disc)
parser.add_option('--cpp-header-dir', dest='cppheaderdir', metavar='DIR',
help='input directory for C++ header files [required]')
parser.add_option('--debug-dir', dest='debugdir', metavar='DIR',
help='intermediate directory for easy debugging')
parser.add_option('-v', '--verbose',
action='store_true', dest='verbose', default=False,
help='output detailed status information')
(options, args) = parser.parse_args()
# the cppheader option is required
if options.cppheaderdir is None:
parser.print_help(sys.stdout)
sys.exit()
# calculate
c_start_time = time.time()
calc = cef_api_hash(options.cppheaderdir, options.debugdir, options.verbose);
revisions = calc.calculate();
c_completed_in = time.time() - c_start_time
print "{"
for k in sorted(revisions.keys()):
print format("\"" + k + "\"", ">12s") + ": \"" + revisions[k] + "\""
print "}"
# print
# print 'Completed in: ' + str(c_completed_in)
# print
# print "Press any key to continue...";
# sys.stdin.readline();