cef/tools/make_capi_header.py

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# 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 __future__ import absolute_import
from cef_parser import *
def make_capi_global_funcs(funcs, defined_names, translate_map, indent):
result = ''
first = True
for func in funcs:
comment = func.get_comment()
if first or len(comment) > 0:
result += '\n' + format_comment(comment, indent, translate_map)
if func.get_retval().get_type().is_result_string():
result += indent + '// The resulting string must be freed by calling cef_string_userfree_free().\n'
result += indent + 'CEF_EXPORT ' + func.get_capi_proto(defined_names) + ';\n'
if first:
first = False
return result
def make_capi_member_funcs(funcs, defined_names, translate_map, indent):
result = ''
first = True
for func in funcs:
comment = func.get_comment()
if first or len(comment) > 0:
result += '\n' + format_comment(comment, indent, translate_map)
if func.get_retval().get_type().is_result_string():
result += indent + '// The resulting string must be freed by calling cef_string_userfree_free().\n'
parts = func.get_capi_parts()
result += indent+parts['retval']+' (CEF_CALLBACK *'+parts['name']+ \
')('+', '.join(parts['args'])+');\n'
if first:
first = False
return result
def make_capi_header(header, filename):
# structure names that have already been defined
defined_names = header.get_defined_structs()
# map of strings that will be changed in C++ comments
translate_map = header.get_capi_translations()
# header string
result = get_copyright(full=True, translator=False) + \
"""//
// ---------------------------------------------------------------------------
//
// This file was generated by the CEF translator tool and should not edited
// by hand. See the translator.README.txt file in the tools directory for
// more information.
//
// $hash=$$HASH$$$
//
#ifndef $GUARD$
#define $GUARD$
#pragma once
"""
# Protect against incorrect use of test headers.
if filename.startswith('test/'):
result += \
"""#if !defined(BUILDING_CEF_SHARED) && !defined(WRAPPING_CEF_SHARED) && \\
!defined(UNIT_TEST)
#error This file can be included for unit tests only
#endif
"""
classes = header.get_classes(filename)
# identify all includes and forward declarations
translated_includes = set([])
internal_includes = set([])
all_declares = set([])
for cls in classes:
includes = cls.get_includes()
for include in includes:
if include.startswith('base/'):
# base/ headers are C++. They should not be included by
# translated CEF API headers.
raise Exception('Disallowed include of %s.h from %s' % (include,
filename))
elif include.startswith('internal/'):
# internal/ headers may be C or C++. Include them as-is.
internal_includes.add(include)
else:
translated_includes.add(include)
declares = cls.get_forward_declares()
for declare in declares:
declare_cls = header.get_class(declare)
if declare_cls is None:
raise Exception('Unknown class: %s' % declare)
all_declares.add(declare_cls.get_capi_name())
# output translated includes
if len(translated_includes) > 0:
sorted_includes = sorted(translated_includes)
for include in sorted_includes:
result += '#include "include/capi/' + include + '_capi.h"\n'
else:
result += '#include "include/capi/cef_base_capi.h"\n'
# output internal includes
if len(internal_includes) > 0:
sorted_includes = sorted(internal_includes)
for include in sorted_includes:
result += '#include "include/' + include + '.h"\n'
result += \
"""
#ifdef __cplusplus
extern "C" {
#endif
"""
# output forward declarations
if len(all_declares) > 0:
sorted_declares = sorted(all_declares)
for declare in sorted_declares:
result += 'struct _' + declare + ';\n'
# output classes
for cls in classes:
# virtual functions are inside the structure
classname = cls.get_capi_name()
result += '\n' + format_comment(cls.get_comment(), '', translate_map)
result += 'typedef struct _'+classname+' {\n'+\
' ///\n'+\
' /// Base structure.\n'+\
' ///\n'+\
' '+cls.get_parent_capi_name()+' base;\n'
funcs = cls.get_virtual_funcs()
result += make_capi_member_funcs(funcs, defined_names, translate_map, ' ')
result += '} ' + classname + ';\n\n'
defined_names.append(cls.get_capi_name())
# static functions become global
funcs = cls.get_static_funcs()
if len(funcs) > 0:
result += make_capi_global_funcs(funcs, defined_names, translate_map,
'') + '\n'
# output global functions
funcs = header.get_funcs(filename)
if len(funcs) > 0:
result += make_capi_global_funcs(funcs, defined_names, translate_map, '')
# footer string
result += \
"""
#ifdef __cplusplus
}
#endif
#endif // $GUARD$
"""
# add the guard string
guard = 'CEF_INCLUDE_CAPI_' + \
filename.replace('/', '_').replace('.', '_capi_').upper() + '_'
result = result.replace('$GUARD$', guard)
return result
def write_capi_header(header, header_dir, filename):
file = get_capi_file_name(os.path.join(header_dir, filename))
newcontents = make_capi_header(header, filename)
return (file, newcontents)
# test the module
if __name__ == "__main__":
import sys
# verify that the correct number of command-line arguments are provided
if len(sys.argv) < 2:
sys.stderr.write('Usage: ' + sys.argv[0] + ' <infile>\n')
sys.exit()
# create the header object
header = obj_header()
header.add_file(sys.argv[1])
# dump the result to stdout
filename = os.path.split(sys.argv[1])[1]
sys.stdout.write(make_capi_header(header, filename))