cef/tools/make_ctocpp_impl.py
Marshall Greenblatt 06e73fff15 Implement Views framework on Windows and Linux (issue #1749).
- Add Views header files in a new include/views directory.
- Add initial top-level window (CefWindow), control (CefBrowserView,
  CefLabelButton, CefMenuButton, CefPanel, CefScrollView,
  CefTextfield) and layout (CefBoxLayout, CefFlowLayout) support.
  See libcef/browser/views/view_impl.h comments for implementation
  details.
- Add Views example usage in cefclient and cefsimple and Views unit
  tests in cef_unittests. Pass the `--use-views` command-line flag to
  cefclient, cefsimple and cef_unittests to run using the Views
  framework instead of platform APIs. For cefclient and cefsimple
  this will create the browser window and all related functionality
  using the Views framework. For cef_unittests this will run all
  tests (except OSR tests) in a Views-based browser window. Views-
  specific unit tests (`--gtest_filter=Views*`) will be run even if
  the the `--use-views` flag is not specified.
- Pass the `--hide-frame` command-line flag to cefclient to demo a
  frameless Views-based browser window.
- Pass the `--hide-controls` command-line flag to cefclient to demo a
  browser window without top controls. This also works in non-Views
  mode.
- Pass the `--enable-high-dpi-support` command-line flag to
  cef_unittests on Windows to test high-DPI support on a display
  that supports it.
- Add CefImage for reading/writing image file formats.
- Add CefBrowser::DownloadImage() for downloading image URLs as a
  CefImage representation. This is primarily for loading favicons.
- Add CefMenuModel::CreateMenuModel() and CefMenuModelDelegate for
  creating custom menus. This is primarily for use with
  CefMenuButton.
- Add CefBrowser::TryCloseBrowser() helper for closing a browser.
  Also improve related documentation in cef_life_span_handler.h.
- Rename cef_page_range_t to cef_range_t. It is now also used by
  CefTextfield.
- Remove CefLifeSpanHandler::RunModal() which is never called.
- Add draggable regions example to cefclient.
2016-04-26 11:58:13 -04:00

653 lines
27 KiB
Python

# 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 *
def make_ctocpp_impl_proto(clsname, name, func, parts):
const = ''
if clsname is None:
proto = 'CEF_GLOBAL '+parts['retval']+' '
else:
proto = parts['retval']+' '+clsname
if isinstance(func, obj_function_virtual):
proto += 'CToCpp'
if func.is_const():
const = ' const'
proto += '::'
proto += name+'('+string.join(parts['args'], ', ')+')'+const
return proto
def make_ctocpp_function_impl_existing(clsname, name, func, impl):
notify(name+' has manual edits')
# retrieve the C++ prototype parts
parts = func.get_cpp_parts(True)
changes = format_translation_changes(impl, parts)
if len(changes) > 0:
notify(name+' prototype changed')
return wrap_code(make_ctocpp_impl_proto(clsname, name, func, parts))+'{'+ \
changes+impl['body']+'\n}\n'
def make_ctocpp_function_impl_new(clsname, name, func):
# build the C++ prototype
parts = func.get_cpp_parts(True)
result = make_ctocpp_impl_proto(clsname, name, func, parts)+' {'
if isinstance(func, obj_function_virtual):
# determine how the struct should be referenced
if clsname == func.parent.get_name():
result += '\n '+get_capi_name(clsname, True)+'* _struct = GetStruct();'
else:
result += '\n '+func.parent.get_capi_name()+'* _struct = reinterpret_cast<'+\
func.parent.get_capi_name()+'*>(GetStruct());'
invalid = []
# retrieve the function arguments
args = func.get_arguments()
# determine the argument types
for arg in args:
if arg.get_arg_type() == 'invalid':
invalid.append(arg.get_name())
# retrieve the function return value
retval = func.get_retval()
retval_type = retval.get_retval_type()
if retval_type == 'invalid':
invalid.append('(return value)')
retval_default = ''
else:
retval_default = retval.get_retval_default(False)
if len(retval_default) > 0:
retval_default = ' '+retval_default;
# add API hash check
if func.has_attrib('api_hash_check'):
result += '\n const char* api_hash = cef_api_hash(0);'\
'\n if (strcmp(api_hash, CEF_API_HASH_PLATFORM)) {'\
'\n // The libcef API hash does not match the current header API hash.'\
'\n NOTREACHED();'\
'\n return'+retval_default+';'\
'\n }\n'
if isinstance(func, obj_function_virtual):
# add the structure size check
result += '\n if (CEF_MEMBER_MISSING(_struct, '+func.get_capi_name()+'))'
result += '\n return'+retval_default+';\n'
if len(invalid) > 0:
notify(name+' could not be autogenerated')
# code could not be auto-generated
result += '\n // BEGIN DELETE BEFORE MODIFYING'
result += '\n // AUTO-GENERATED CONTENT'
result += '\n // COULD NOT IMPLEMENT DUE TO: '+string.join(invalid, ', ')
result += '\n #pragma message("Warning: "__FILE__": '+name+' is not implemented")'
result += '\n // END DELETE BEFORE MODIFYING'
result += '\n}\n\n'
return wrap_code(result)
result += '\n // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING\n'
result_len = len(result)
optional = []
# parameter verification
for arg in args:
arg_type = arg.get_arg_type()
arg_name = arg.get_type().get_name()
# skip optional params
optional_params = arg.parent.get_attrib_list('optional_param')
if not optional_params is None and arg_name in optional_params:
optional.append(arg_name)
continue
comment = '\n // Verify param: '+arg_name+'; type: '+arg_type
if arg_type == 'simple_byaddr' or arg_type == 'bool_byaddr':
result += comment+\
'\n DCHECK('+arg_name+');'\
'\n if (!'+arg_name+')'\
'\n return'+retval_default+';'
elif arg_type == 'refptr_same' or arg_type == 'refptr_diff':
result += comment+\
'\n DCHECK('+arg_name+'.get());'\
'\n if (!'+arg_name+'.get())'\
'\n return'+retval_default+';'
elif arg_type == 'string_byref_const':
result += comment+\
'\n DCHECK(!'+arg_name+'.empty());'\
'\n if ('+arg_name+'.empty())'\
'\n return'+retval_default+';'
# check index params
index_params = arg.parent.get_attrib_list('index_param')
if not index_params is None and arg_name in index_params:
result += comment+\
'\n DCHECK_GE('+arg_name+', 0);'\
'\n if ('+arg_name+' < 0)'\
'\n return'+retval_default+';'
if len(optional) > 0:
# Wrap the comment at 80 characters.
str = '\n // Unverified params: ' + optional[0]
for name in optional[1:]:
str += ','
if len(str) + len(name) + 1 > 80:
result += str
str = '\n //'
str += ' ' + name
result += str
if len(result) != result_len:
result += '\n'
result_len = len(result)
# parameter translation
params = []
if isinstance(func, obj_function_virtual):
params.append('_struct')
for arg in args:
arg_type = arg.get_arg_type()
arg_name = arg.get_type().get_name()
comment = '\n // Translate param: '+arg_name+'; type: '+arg_type
if arg_type == 'simple_byval' or arg_type == 'simple_byaddr' or \
arg_type == 'bool_byval':
params.append(arg_name)
elif arg_type == 'simple_byref' or arg_type == 'simple_byref_const' or \
arg_type == 'struct_byref_const' or arg_type == 'struct_byref':
params.append('&'+arg_name)
elif arg_type == 'bool_byref':
result += comment+\
'\n int '+arg_name+'Int = '+arg_name+';'
params.append('&'+arg_name+'Int')
elif arg_type == 'bool_byaddr':
result += comment+\
'\n int '+arg_name+'Int = '+arg_name+'?*'+arg_name+':0;'
params.append('&'+arg_name+'Int')
elif arg_type == 'string_byref_const':
params.append(arg_name+'.GetStruct()')
elif arg_type == 'string_byref':
params.append(arg_name+'.GetWritableStruct()')
elif arg_type == 'refptr_same':
refptr_class = arg.get_type().get_refptr_type()
params.append(refptr_class+'CToCpp::Unwrap('+arg_name+')')
elif arg_type == 'refptr_diff':
refptr_class = arg.get_type().get_refptr_type()
params.append(refptr_class+'CppToC::Wrap('+arg_name+')')
elif arg_type == 'refptr_same_byref' or arg_type == 'refptr_diff_byref':
refptr_class = arg.get_type().get_refptr_type()
refptr_struct = arg.get_type().get_result_refptr_type_root()
if arg_type == 'refptr_same_byref':
assign = refptr_class+'CToCpp::Unwrap('+arg_name+')'
else:
assign = refptr_class+'CppToC::Wrap('+arg_name+')'
result += comment+\
'\n '+refptr_struct+'* '+arg_name+'Struct = NULL;'\
'\n if ('+arg_name+'.get())'\
'\n '+arg_name+'Struct = '+assign+';'\
'\n '+refptr_struct+'* '+arg_name+'Orig = '+arg_name+'Struct;'
params.append('&'+arg_name+'Struct')
elif arg_type == 'string_vec_byref' or arg_type == 'string_vec_byref_const':
result += comment+\
'\n cef_string_list_t '+arg_name+'List = cef_string_list_alloc();'\
'\n DCHECK('+arg_name+'List);'\
'\n if ('+arg_name+'List)'\
'\n transfer_string_list_contents('+arg_name+', '+arg_name+'List);'
params.append(arg_name+'List')
elif arg_type == 'string_map_single_byref' or arg_type == 'string_map_single_byref_const':
result += comment+\
'\n cef_string_map_t '+arg_name+'Map = cef_string_map_alloc();'\
'\n DCHECK('+arg_name+'Map);'\
'\n if ('+arg_name+'Map)'\
'\n transfer_string_map_contents('+arg_name+', '+arg_name+'Map);'
params.append(arg_name+'Map')
elif arg_type == 'string_map_multi_byref' or arg_type == 'string_map_multi_byref_const':
result += comment+\
'\n cef_string_multimap_t '+arg_name+'Multimap = cef_string_multimap_alloc();'\
'\n DCHECK('+arg_name+'Multimap);'\
'\n if ('+arg_name+'Multimap)'\
'\n transfer_string_multimap_contents('+arg_name+', '+arg_name+'Multimap);'
params.append(arg_name+'Multimap')
elif arg_type == 'simple_vec_byref' or arg_type == 'bool_vec_byref' or \
arg_type == 'refptr_vec_same_byref' or arg_type == 'refptr_vec_diff_byref':
count_func = arg.get_attrib_count_func()
vec_type = arg.get_type().get_result_vector_type_root()
if arg_type == 'refptr_vec_same_byref':
refptr_class = arg.get_type().get_refptr_type()
assign = refptr_class+'CToCpp::Unwrap('+arg_name+'[i])'
elif arg_type == 'refptr_vec_diff_byref':
refptr_class = arg.get_type().get_refptr_type()
assign = refptr_class+'CppToC::Wrap('+arg_name+'[i])'
else:
assign = arg_name+'[i]'
result += comment+\
'\n size_t '+arg_name+'Size = '+arg_name+'.size();'\
'\n size_t '+arg_name+'Count = std::max('+count_func+'(), '+arg_name+'Size);'\
'\n '+vec_type+'* '+arg_name+'List = NULL;'\
'\n if ('+arg_name+'Count > 0) {'\
'\n '+arg_name+'List = new '+vec_type+'['+arg_name+'Count];'\
'\n DCHECK('+arg_name+'List);'\
'\n if ('+arg_name+'List) {'\
'\n memset('+arg_name+'List, 0, sizeof('+vec_type+')*'+arg_name+'Count);'\
'\n }'\
'\n if ('+arg_name+'List && '+arg_name+'Size > 0) {'\
'\n for (size_t i = 0; i < '+arg_name+'Size; ++i) {'\
'\n '+arg_name+'List[i] = '+assign+';'\
'\n }'\
'\n }'\
'\n }'
params.append('&'+arg_name+'Count')
params.append(arg_name+'List')
elif arg_type == 'simple_vec_byref_const' or arg_type == 'bool_vec_byref_const' or \
arg_type == 'refptr_vec_same_byref_const' or arg_type == 'refptr_vec_diff_byref_const':
count_func = arg.get_attrib_count_func()
vec_type = arg.get_type().get_result_vector_type_root()
if arg_type == 'refptr_vec_same_byref_const':
refptr_class = arg.get_type().get_refptr_type()
assign = refptr_class+'CToCpp::Unwrap('+arg_name+'[i])'
elif arg_type == 'refptr_vec_diff_byref_const':
refptr_class = arg.get_type().get_refptr_type()
assign = refptr_class+'CppToC::Wrap('+arg_name+'[i])'
else:
assign = arg_name+'[i]'
result += comment+\
'\n const size_t '+arg_name+'Count = '+arg_name+'.size();'\
'\n '+vec_type+'* '+arg_name+'List = NULL;'\
'\n if ('+arg_name+'Count > 0) {'\
'\n '+arg_name+'List = new '+vec_type+'['+arg_name+'Count];'\
'\n DCHECK('+arg_name+'List);'\
'\n if ('+arg_name+'List) {'\
'\n for (size_t i = 0; i < '+arg_name+'Count; ++i) {'\
'\n '+arg_name+'List[i] = '+assign+';'\
'\n }'\
'\n }'\
'\n }'
params.append(arg_name+'Count')
params.append(arg_name+'List')
if len(result) != result_len:
result += '\n'
result_len = len(result)
# execution
result += '\n // Execute\n '
if retval_type != 'none':
# has a return value
if retval_type == 'simple' or retval_type == 'bool':
result += retval.get_type().get_result_simple_type_root()
elif retval_type == 'string':
result += 'cef_string_userfree_t'
elif retval_type == 'refptr_same' or retval_type == 'refptr_diff':
refptr_struct = retval.get_type().get_result_refptr_type_root()
result += refptr_struct+'*'
result += ' _retval = '
if isinstance(func, obj_function_virtual):
result += '_struct->'
result += func.get_capi_name()+'('
if len(params) > 0:
if not isinstance(func, obj_function_virtual):
result += '\n '
result += string.join(params,',\n ')
result += ');\n'
result_len = len(result)
# parameter restoration
for arg in args:
arg_type = arg.get_arg_type()
arg_name = arg.get_type().get_name()
comment = '\n // Restore param:'+arg_name+'; type: '+arg_type
if arg_type == 'bool_byref':
result += comment+\
'\n '+arg_name+' = '+arg_name+'Int?true:false;'
elif arg_type == 'bool_byaddr':
result += comment+\
'\n if ('+arg_name+')'\
'\n *'+arg_name+' = '+arg_name+'Int?true:false;'
elif arg_type == 'refptr_same_byref' or arg_type == 'refptr_diff_byref':
refptr_class = arg.get_type().get_refptr_type()
refptr_struct = arg.get_type().get_result_refptr_type_root()
if arg_type == 'refptr_same_byref':
assign = refptr_class+'CToCpp::Wrap('+arg_name+'Struct)'
else:
assign = refptr_class+'CppToC::Unwrap('+arg_name+'Struct)'
result += comment+\
'\n if ('+arg_name+'Struct) {'\
'\n if ('+arg_name+'Struct != '+arg_name+'Orig) {'\
'\n '+arg_name+' = '+assign+';'\
'\n }'\
'\n } else {'\
'\n '+arg_name+' = NULL;'\
'\n }'
elif arg_type == 'string_vec_byref':
result += comment+\
'\n if ('+arg_name+'List) {'\
'\n '+arg_name+'.clear();'\
'\n transfer_string_list_contents('+arg_name+'List, '+arg_name+');'\
'\n cef_string_list_free('+arg_name+'List);'\
'\n }'
elif arg_type == 'string_vec_byref_const':
result += comment+\
'\n if ('+arg_name+'List)'\
'\n cef_string_list_free('+arg_name+'List);'
elif arg_type == 'string_map_single_byref':
result += comment+\
'\n if ('+arg_name+'Map) {'\
'\n '+arg_name+'.clear();'\
'\n transfer_string_map_contents('+arg_name+'Map, '+arg_name+');'\
'\n cef_string_map_free('+arg_name+'Map);'\
'\n }'
elif arg_type == 'string_map_single_byref_const':
result += comment+\
'\n if ('+arg_name+'Map)'\
'\n cef_string_map_free('+arg_name+'Map);'
elif arg_type == 'string_map_multi_byref':
result += comment+\
'\n if ('+arg_name+'Multimap) {'\
'\n '+arg_name+'.clear();'\
'\n transfer_string_multimap_contents('+arg_name+'Multimap, '+arg_name+');'\
'\n cef_string_multimap_free('+arg_name+'Multimap);'\
'\n }'
elif arg_type == 'string_map_multi_byref_const':
result += comment+\
'\n if ('+arg_name+'Multimap)'\
'\n cef_string_multimap_free('+arg_name+'Multimap);'
elif arg_type == 'simple_vec_byref' or arg_type == 'bool_vec_byref' or \
arg_type == 'refptr_vec_same_byref' or arg_type == 'refptr_vec_diff_byref':
count_func = arg.get_attrib_count_func()
vec_type = arg.get_type().get_result_vector_type_root()
if arg_type == 'refptr_vec_same_byref':
refptr_class = arg.get_type().get_refptr_type()
assign = refptr_class+'CToCpp::Wrap('+arg_name+'List[i])'
elif arg_type == 'refptr_vec_diff_byref':
refptr_class = arg.get_type().get_refptr_type()
assign = refptr_class+'CppToC::Unwrap('+arg_name+'List[i])'
elif arg_type == 'bool_vec_byref':
assign = arg_name+'List[i]?true:false'
else:
assign = arg_name+'List[i]'
result += comment+\
'\n '+arg_name+'.clear();'\
'\n if ('+arg_name+'Count > 0 && '+arg_name+'List) {'\
'\n for (size_t i = 0; i < '+arg_name+'Count; ++i) {'\
'\n '+arg_name+'.push_back('+assign+');'\
'\n }'\
'\n delete [] '+arg_name+'List;'\
'\n }'
elif arg_type == 'simple_vec_byref_const' or arg_type == 'bool_vec_byref_const' or \
arg_type == 'refptr_vec_same_byref_const' or arg_type == 'refptr_vec_diff_byref_const':
result += comment+\
'\n if ('+arg_name+'List)'\
'\n delete [] '+arg_name+'List;'
if len(result) != result_len:
result += '\n'
result_len = len(result)
# special handling for the global CefShutdown function
if name == 'CefShutdown' and isinstance(func.parent, obj_header):
classes = func.parent.get_classes()
names = []
for cls in classes:
if cls.has_attrib('no_debugct_check'):
continue;
if cls.is_library_side():
names.append(cls.get_name()+'CToCpp')
else:
names.append(cls.get_name()+'CppToC')
if len(names) > 0:
names = sorted(names)
result += '\n#ifndef NDEBUG'\
'\n // Check that all wrapper objects have been destroyed'
for name in names:
result += '\n DCHECK(base::AtomicRefCountIsZero(&'+name+'::DebugObjCt));';
result += '\n#endif // !NDEBUG'
if len(result) != result_len:
result += '\n'
result_len = len(result)
# return translation
if retval_type != 'none':
# has a return value
result += '\n // Return type: '+retval_type
if retval_type == 'simple':
result += '\n return _retval;'
elif retval_type == 'bool':
result += '\n return _retval?true:false;'
elif retval_type == 'string':
result += '\n CefString _retvalStr;'\
'\n _retvalStr.AttachToUserFree(_retval);'\
'\n return _retvalStr;'
elif retval_type == 'refptr_same':
refptr_class = retval.get_type().get_refptr_type()
result += '\n return '+refptr_class+'CToCpp::Wrap(_retval);'
elif retval_type == 'refptr_diff':
refptr_class = retval.get_type().get_refptr_type()
result += '\n return '+refptr_class+'CppToC::Unwrap(_retval);'
if len(result) != result_len:
result += '\n'
result += '}\n'
return wrap_code(result)
def make_ctocpp_function_impl(clsname, funcs, existing):
impl = ''
for func in funcs:
name = func.get_name()
value = get_next_function_impl(existing, name)
if not value is None \
and value['body'].find('// AUTO-GENERATED CONTENT') < 0:
# an implementation exists that was not auto-generated
impl += make_ctocpp_function_impl_existing(clsname, name, func, value)
else:
impl += make_ctocpp_function_impl_new(clsname, name, func)
return impl
def make_ctocpp_virtual_function_impl(header, cls, existing):
impl = make_ctocpp_function_impl(cls.get_name(), cls.get_virtual_funcs(), existing)
cur_cls = cls
while True:
parent_name = cur_cls.get_parent_name()
if parent_name == 'CefBase':
break
else:
parent_cls = header.get_class(parent_name)
if parent_cls is None:
raise Exception('Class does not exist: '+parent_name)
impl += make_ctocpp_function_impl(cls.get_name(), parent_cls.get_virtual_funcs(), existing)
cur_cls = header.get_class(parent_name)
return impl
def make_ctocpp_unwrap_derived(header, cls):
# identify all classes that derive from cls
derived_classes = []
clsname = cls.get_name()
allclasses = header.get_classes()
for cur_cls in allclasses:
if cur_cls.get_name() == clsname:
continue
if cur_cls.has_parent(clsname):
derived_classes.append(cur_cls.get_name())
derived_classes = sorted(derived_classes)
impl = ''
for clsname in derived_classes:
impl += ' if (type == '+get_wrapper_type_enum(clsname)+') {\n'+\
' return reinterpret_cast<'+get_capi_name(cls.get_name(), True)+'*>('+\
clsname+'CToCpp::Unwrap(reinterpret_cast<'+clsname+'*>(c)));\n'+\
' }\n'
return impl
def make_ctocpp_class_impl(header, clsname, impl):
cls = header.get_class(clsname)
if cls is None:
raise Exception('Class does not exist: '+clsname)
capiname = cls.get_capi_name()
# retrieve the existing virtual function implementations
existing = get_function_impls(impl, clsname+'CToCpp::')
# generate virtual functions
virtualimpl = make_ctocpp_virtual_function_impl(header, cls, existing)
if len(virtualimpl) > 0:
virtualimpl = '\n// VIRTUAL METHODS - Body may be edited by hand.\n\n'+virtualimpl
# retrieve the existing static function implementations
existing = get_function_impls(impl, clsname+'::')
# generate static functions
staticimpl = make_ctocpp_function_impl(clsname, cls.get_static_funcs(), existing)
if len(staticimpl) > 0:
staticimpl = '\n// STATIC METHODS - Body may be edited by hand.\n\n'+staticimpl
resultingimpl = staticimpl + virtualimpl
# any derived classes can be unwrapped
unwrapderived = make_ctocpp_unwrap_derived(header, cls)
# determine what includes are required by identifying what translation
# classes are being used
includes = format_translation_includes(header, resultingimpl + unwrapderived)
# build the final output
result = get_copyright()
result += includes+'\n'+resultingimpl+'\n'
parent_sig = 'CefCToCpp<'+clsname+'CToCpp, '+clsname+', '+capiname+'>'
const = '// CONSTRUCTOR - Do not edit by hand.\n\n'+ \
clsname+'CToCpp::'+clsname+'CToCpp() {\n'+ \
'}\n\n'+ \
'template<> '+capiname+'* '+parent_sig+'::UnwrapDerived(CefWrapperType type, '+clsname+'* c) {\n'+ \
unwrapderived + \
' NOTREACHED() << "Unexpected class type: " << type;\n'+ \
' return NULL;\n'+ \
'}\n\n'+ \
'#ifndef NDEBUG\n'+ \
'template<> base::AtomicRefCount '+parent_sig+'::DebugObjCt = 0;\n'+ \
'#endif\n\n'+ \
'template<> CefWrapperType '+parent_sig+'::kWrapperType = '+get_wrapper_type_enum(clsname)+';'
result += wrap_code(const)
return result
def make_ctocpp_global_impl(header, impl):
# retrieve the existing global function implementations
existing = get_function_impls(impl, 'CEF_GLOBAL')
# generate static functions
impl = make_ctocpp_function_impl(None, header.get_funcs(), existing)
if len(impl) > 0:
impl = '\n// GLOBAL METHODS - Body may be edited by hand.\n\n'+impl
includes = ''
# include required headers for global functions
filenames = []
for func in header.get_funcs():
filename = func.get_file_name()
if not filename in filenames:
includes += '#include "include/'+func.get_file_name()+'"\n' \
'#include "include/capi/'+func.get_capi_file_name()+'"\n'
filenames.append(filename)
# determine what includes are required by identifying what translation
# classes are being used
includes += format_translation_includes(header, impl)
# build the final output
result = get_copyright()
result += includes+'\n// Define used to facilitate parsing.\n#define CEF_GLOBAL\n\n'+impl
return result
def write_ctocpp_impl(header, clsname, dir, backup):
if clsname is None:
# global file
file = dir
else:
# class file
# give the output file the same directory offset as the input file
cls = header.get_class(clsname)
dir = os.path.dirname(os.path.join(dir, cls.get_file_name()))
file = os.path.join(dir, get_capi_name(clsname[3:], False)+'_ctocpp.cc')
if path_exists(file):
oldcontents = read_file(file)
else:
oldcontents = ''
if clsname is None:
newcontents = make_ctocpp_global_impl(header, oldcontents)
else:
newcontents = make_ctocpp_class_impl(header, clsname, oldcontents)
if newcontents != oldcontents:
if backup and oldcontents != '':
backup_file(file)
file_dir = os.path.split(file)[0]
if not os.path.isdir(file_dir):
make_dir(file_dir)
write_file(file, newcontents)
return True
return False
# test the module
if __name__ == "__main__":
import sys
# verify that the correct number of command-line arguments are provided
if len(sys.argv) < 4:
sys.stderr.write('Usage: '+sys.argv[0]+' <infile> <classname> <existing_impl>')
sys.exit()
# create the header object
header = obj_header()
header.add_file(sys.argv[1])
# read the existing implementation file into memory
try:
f = open(sys.argv[3], 'r')
data = f.read()
except IOError, (errno, strerror):
raise Exception('Failed to read file '+sys.argv[3]+': '+strerror)
else:
f.close()
# dump the result to stdout
sys.stdout.write(make_ctocpp_class_impl(header, sys.argv[2], data))