#!/usr/bin/env python
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"""fuse_gmock_files.py v0.1.0
Fuses Google Mock and Google Test source code into two .h files and a .cc file.
SYNOPSIS
fuse_gmock_files.py [GMOCK_ROOT_DIR] OUTPUT_DIR
Scans GMOCK_ROOT_DIR for Google Mock and Google Test source
code, assuming Google Test is in the GMOCK_ROOT_DIR/../googletest
directory, and generates three files:
OUTPUT_DIR/gtest/gtest.h, OUTPUT_DIR/gmock/gmock.h, and
OUTPUT_DIR/gmock-gtest-all.cc. Then you can build your tests
by adding OUTPUT_DIR to the include search path and linking
with OUTPUT_DIR/gmock-gtest-all.cc. These three files contain
everything you need to use Google Mock. Hence you can
"install" Google Mock by copying them to wherever you want.
GMOCK_ROOT_DIR can be omitted and defaults to the parent
directory of the directory holding this script.
EXAMPLES
./fuse_gmock_files.py fused_gmock
./fuse_gmock_files.py path/to/unpacked/gmock fused_gmock
This tool is experimental. In particular, it assumes that there is no
conditional inclusion of Google Mock or Google Test headers. Please
report any problems to googlemock@googlegroups.com. You can read
https://github.com/google/googletest/blob/master/googlemock/docs/CookBook.md for more
information.
"""
__author__ = 'wan@google.com (Zhanyong Wan)'
import os
import re
import sets
import sys
# We assume that this file is in the scripts/ directory in the Google
# Mock root directory.
DEFAULT_GMOCK_ROOT_DIR = os.path.join(os.path.dirname(__file__), '..')
# We need to call into googletest/scripts/fuse_gtest_files.py.
sys.path.append(os.path.join(DEFAULT_GMOCK_ROOT_DIR, '../googletest/scripts'))
import fuse_gtest_files
gtest = fuse_gtest_files
# Regex for matching '#include "gmock/..."'.
INCLUDE_GMOCK_FILE_REGEX = re.compile(r'^\s*#\s*include\s*"(gmock/.+)"')
# Where to find the source seed files.
GMOCK_H_SEED = 'include/gmock/gmock.h'
GMOCK_ALL_CC_SEED = 'src/gmock-all.cc'
# Where to put the generated files.
GTEST_H_OUTPUT = 'gtest/gtest.h'
GMOCK_H_OUTPUT = 'gmock/gmock.h'
GMOCK_GTEST_ALL_CC_OUTPUT = 'gmock-gtest-all.cc'
def GetGTestRootDir(gmock_root):
"""Returns the root directory of Google Test."""
return os.path.join(gmock_root, '../googletest')
def ValidateGMockRootDir(gmock_root):
"""Makes sure gmock_root points to a valid gmock root directory.
The function aborts the program on failure.
"""
gtest.ValidateGTestRootDir(GetGTestRootDir(gmock_root))
gtest.VerifyFileExists(gmock_root, GMOCK_H_SEED)
gtest.VerifyFileExists(gmock_root, GMOCK_ALL_CC_SEED)
def ValidateOutputDir(output_dir):
"""Makes sure output_dir points to a valid output directory.
The function aborts the program on failure.
"""
gtest.VerifyOutputFile(output_dir, gtest.GTEST_H_OUTPUT)
gtest.VerifyOutputFile(output_dir, GMOCK_H_OUTPUT)
gtest.VerifyOutputFile(output_dir, GMOCK_GTEST_ALL_CC_OUTPUT)
def FuseGMockH(gmock_root, output_dir):
"""Scans folder gmock_root to generate gmock/gmock.h in output_dir."""
output_file = file(os.path.join(output_dir, GMOCK_H_OUTPUT), 'w')
processed_files = sets.Set() # Holds all gmock headers we've processed.
def ProcessFile(gmock_header_path):
"""Processes the given gmock header file."""
# We don't process the same header twice.
if gmock_header_path in processed_files:
return
processed_files.add(gmock_header_path)
# Reads each line in the given gmock header.
for line in file(os.path.join(gmock_root, gmock_header_path), 'r'):
m = INCLUDE_GMOCK_FILE_REGEX.match(line)
if m:
# It's '#include "gmock/..."' - let's process it recursively.
ProcessFile('include/' + m.group(1))
else:
m = gtest.INCLUDE_GTEST_FILE_REGEX.match(line)
if m:
# It's '#include "gtest/foo.h"'. We translate it to
# "gtest/gtest.h", regardless of what foo is, since all
# gtest headers are fused into gtest/gtest.h.
# There is no need to #include gtest.h twice.
if not gtest.GTEST_H_SEED in processed_files:
processed_files.add(gtest.GTEST_H_SEED)
output_file.write('#include "%s"\n' % (gtest.GTEST_H_OUTPUT,))
else:
# Otherwise we copy the line unchanged to the output file.
output_file.write(line)
ProcessFile(GMOCK_H_SEED)
output_file.close()
def FuseGMockAllCcToFile(gmock_root, output_file):
"""Scans folder gmock_root to fuse gmock-all.cc into output_file."""
processed_files = sets.Set()
def ProcessFile(gmock_source_file):
"""Processes the given gmock source file."""
# We don't process the same #included file twice.
if gmock_source_file in processed_files:
return
processed_files.add(gmock_source_file)
# Reads each line in the given gmock source file.
for line in file(os.path.join(gmock_root, gmock_source_file), 'r'):
m = INCLUDE_GMOCK_FILE_REGEX.match(line)
if m:
# It's '#include "gmock/foo.h"'. We treat it as '#include
# "gmock/gmock.h"', as all other gmock headers are being fused
# into gmock.h and cannot be #included directly.
# There is no need to #include "gmock/gmock.h" more than once.
if not GMOCK_H_SEED in processed_files:
processed_files.add(GMOCK_H_SEED)
output_file.write('#include "%s"\n' % (GMOCK_H_OUTPUT,))
else:
m = gtest.INCLUDE_GTEST_FILE_REGEX.match(line)
if m:
# It's '#include "gtest/..."'.
# There is no need to #include gtest.h as it has been
# #included by gtest-all.cc.
pass
else:
m = gtest.INCLUDE_SRC_FILE_REGEX.match(line)
if m:
# It's '#include "src/foo"' - let's process it recursively.
ProcessFile(m.group(1))
else:
# Otherwise we copy the line unchanged to the output file.
output_file.write(line)
ProcessFile(GMOCK_ALL_CC_SEED)
def FuseGMockGTestAllCc(gmock_root, output_dir):
"""Scans folder gmock_root to generate gmock-gtest-all.cc in output_dir."""
output_file = file(os.path.join(output_dir, GMOCK_GTEST_ALL_CC_OUTPUT), 'w')
# First, fuse gtest-all.cc into gmock-gtest-all.cc.
gtest.FuseGTestAllCcToFile(GetGTestRootDir(gmock_root), output_file)
# Next, append fused gmock-all.cc to gmock-gtest-all.cc.
FuseGMockAllCcToFile(gmock_root, output_file)
output_file.close()
def FuseGMock(gmock_root, output_dir):
"""Fuses gtest.h, gmock.h, and gmock-gtest-all.h."""
ValidateGMockRootDir(gmock_root)
ValidateOutputDir(output_dir)
gtest.FuseGTestH(GetGTestRootDir(gmock_root), output_dir)
FuseGMockH(gmock_root, output_dir)
FuseGMockGTestAllCc(gmock_root, output_dir)
def main():
argc = len(sys.argv)
if argc == 2:
# fuse_gmock_files.py OUTPUT_DIR
FuseGMock(DEFAULT_GMOCK_ROOT_DIR, sys.argv[1])
elif argc == 3:
# fuse_gmock_files.py GMOCK_ROOT_DIR OUTPUT_DIR
FuseGMock(sys.argv[1], sys.argv[2])
else:
print __doc__
sys.exit(1)
if __name__ == '__main__':
main()