cef/tools/make_cmake.py

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# Copyright (c) 2014 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 __future__ import absolute_import
import os
from file_util import *
import sys
# script directory.
script_dir = os.path.dirname(__file__)
# CEF root directory.
cef_dir = os.path.abspath(os.path.join(script_dir, os.pardir))
def get_files_for_variable(cmake_path, variables, variable):
""" Returns the path values associated with |variable| and relative to the
|cmake_path| directory. """
if not variable in variables:
raise Exception('Variable %s does not exist' % variable)
# Cmake file directory.
cmake_dirname = os.path.dirname(cmake_path) + '/'
# Return path values relative to the cmake file directory.
# Example 1:
# cmake file = "/path/to/libcef_dll/CMakeLists.txt"
# include path = "/path/to/libcef_dll/wrapper/cef_browser_info_map.h"
# return path = "wrapper/cef_browser_info_map.h"
# Example 2:
# cmake file = "/path/to/libcef_dll/CMakeLists.txt"
# include path = "/path/to/include/internal/cef_export.h"
# return path = "../include/internal/cef_export.h"
new_paths = []
paths = variables[variable]
for path in paths:
abspath = os.path.join(cef_dir, path)
newpath = normalize_path(os.path.relpath(abspath, cmake_dirname))
new_paths.append(newpath)
return new_paths
def format_cmake_set(name, values):
result = 'set(%s\n' % name
for value in values:
result += ' %s\n' % value
return result + ' )\n'
def format_cmake_group(cmake_path, name, files, platform_sep, append_macro):
platforms = {}
common = []
# Folder will be the cmake parent directory name combined with the path to
# first file in the files list.
# Example 1:
# cmake file = "/path/to/libcef_dll/CMakeLists.txt"
# include path = "wrapper/cef_browser_info_map.h"
# folder = "libcef_dll\\\\wrapper"
# Example 2:
# cmake file = "/path/to/libcef_dll/CMakeLists.txt"
# include path = "../include/internal/cef_export.h"
# folder = "include\\\\internal"
folder = os.path.basename(os.path.dirname(cmake_path))
folder = os.path.dirname(os.path.normpath(os.path.join(folder, files[0])))
folder = normalize_path(folder).replace('/', '\\\\\\\\')
# Group the files by platform.
for file in files:
parts = file.split(platform_sep)
file = parts[0]
if len(parts) > 1:
# Add the file under the platform.
platform = parts[1]
if not platform in platforms:
platforms[platform] = []
platforms[platform].append(file)
else:
common.append(file)
result = ''
if len(common) > 0:
result += format_cmake_set(name, common)
if len(platforms) > 0:
keys = sorted(platforms.keys())
for key in keys:
result += format_cmake_set(name + '_' + key, platforms[key])
result += '%s(%s)\n' % (append_macro, name)
result += 'source_group(%s FILES ${%s})\n\n' % (folder, name)
return result
def format_cmake_library(name, group_names):
result = 'add_library(%s\n' % name
for group in group_names:
result += ' ${%s}\n' % group
return result + ' )\n\n'
def process_cmake_template_segment(segment, segment_ct, cmake_path, variables):
prefix = None
library = None
set = None
includes = []
suffix = '_SRCS' # Appended to each group name before the platform name.
platform_sep = ':' # Used to separate value from platform name.
append_macro = 'APPEND_PLATFORM_SOURCES' # CMake macro name.
# Extract values from |segment|. Example |segment| contents:
# 'prefix': 'cefsimple',
# 'includes': [
# 'cefsimple_sources_common',
# 'cefsimple_sources_win:WINDOWS',
# 'cefsimple_sources_mac:MAC',
# 'cefsimple_sources_linux:LINUX',
# ],
values = eval('{' + segment + '}', {'__builtins__': None}, None)
if 'prefix' in values:
prefix = values['prefix']
else:
raise Exception('Missing prefix value in segment %d' % segment_ct)
if 'library' in values:
library = values['library']
if 'set' in values:
set = values['set']
if 'append_macro' in values:
append_macro = values['append_macro']
if 'includes' in values and len(values['includes']) > 0:
for include in values['includes']:
parts = include.strip().split(platform_sep)
files = get_files_for_variable(cmake_path, variables, parts[0])
if len(parts) == 2:
# Append the platform to each file path.
files = [file + platform_sep + parts[1] for file in files]
includes.extend(files)
else:
raise Exception('Missing includes value in segment %d' % segment_ct)
# Sort the file paths alphabetically.
includes.sort()
# Group files by path.
# For example, '../include/base/foo.h' and '../include/base/bar.h' will be
# grouped as 'PREFIX_INCLUDE_BASE'.
groups = {}
for include in includes:
paths = include.split('/')
label = prefix
for path in paths[0:-1]:
if path == '..':
continue
label += '_' + path
label = label.replace('.', '_').upper()
if not label in groups:
groups[label] = []
groups[label].append(include)
# Create the output results.
result = ''
keys = sorted(groups.keys())
for key in keys:
# Add a group of files that share the same path.
result += format_cmake_group(cmake_path, key + suffix, groups[key], \
platform_sep, append_macro)
if not library is None:
# Add the library declaration if requested.
result += format_cmake_library(library, [key + suffix for key in keys])
if not set is None:
# Add the set declaration if requested.
result += format_cmake_set(set, \
['${' + key + suffix + '}' for key in keys])
return result.strip()
def process_cmake_template(input, output, variables, quiet=False):
""" Reads the |input| template, parses variable substitution sections and
writes |output|. """
if not quiet:
sys.stdout.write('Processing "%s" to "%s"...\n' % (input, output))
if not os.path.exists(input):
raise Exception('File %s does not exist' % input)
cmake_path = normalize_path(os.path.abspath(input))
template = read_file(cmake_path)
delim_start = '{{'
delim_end = '}}'
# Process the template file, replacing segments delimited by |delim_start|
# and |delim_end|.
result = ''
end = 0
segment_ct = 0
while True:
start = template.find(delim_start, end)
if start == -1:
break
result += template[end:start]
end = template.find(delim_end, start + len(delim_start))
if end == -1:
break
segment = template[start + len(delim_start):end]
segment_ct = segment_ct + 1
result += process_cmake_template_segment(segment, segment_ct, \
cmake_path, variables)
end += len(delim_end)
result += template[end:]
# Only write the output file if the contents have changed.
changed = True
if os.path.exists(output):
existing = read_file(output)
changed = result != existing
if changed:
write_file(output, result)
def read_gypi_variables(source):
""" Read the |source| gypi file and extract the variables section. """
path = os.path.join(cef_dir, source + '.gypi')
if not os.path.exists(path):
raise Exception('File %s does not exist' % path)
contents = eval_file(path)
if not 'variables' in contents:
raise Exception('File %s does not have a variables section' % path)
return contents['variables']
# File entry point.
if __name__ == "__main__":
# Verify that the correct number of command-line arguments are provided.
if len(sys.argv) != 3:
sys.stderr.write('Usage: ' + sys.argv[0] + ' <infile> <outfile>')
sys.exit()
# Read the gypi files and combine into a single dictionary.
variables1 = read_gypi_variables('cef_paths')
variables2 = read_gypi_variables('cef_paths2')
variables = dict(variables1.items() + variables2.items())
# Process the cmake template.
process_cmake_template(sys.argv[1], sys.argv[2], variables)