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https://bitbucket.org/chromiumembedded/cef
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Set eol-style property on all files. Future commits will use the subversion auto-props configuration at http://src.chromium.org/viewvc/chrome/trunk/tools/buildbot/slave/config
git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@109 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
This commit is contained in:
Marshall Greenblatt
@ -1,163 +1,163 @@
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// Copyright (c) 2009 The Chromium Embedded Framework Authors. All rights
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// reserved. Use of this source code is governed by a BSD-style license that
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// can be found in the LICENSE file.
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#include "include/cef_string.h"
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#include <limits.h>
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#include <malloc.h>
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#include <string.h>
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typedef unsigned long dword_t;
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CEF_EXPORT size_t cef_string_length(cef_string_t str)
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{
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dword_t* ptr;
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if(!str)
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return 0;
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// The string length, in bytes, is placed in a dword_t immediately proceeding
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// the string value.
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ptr = (dword_t*)str;
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ptr--;
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return (size_t)(*ptr / sizeof(wchar_t));
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}
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CEF_EXPORT cef_string_t cef_string_alloc(const wchar_t* str)
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{
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if(!str)
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return NULL;
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return cef_string_alloc_length(str, wcslen(str));
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}
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CEF_EXPORT cef_string_t cef_string_alloc_length(const wchar_t* str,
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size_t len)
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{
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dword_t size, *ptr;
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wchar_t* newstr;
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// Check that the size can fit in a dword_t.
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if(len >= (UINT_MAX - sizeof(wchar_t) - sizeof(dword_t)) / sizeof(wchar_t))
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return NULL;
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// Get the size of the string in bytes.
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size = sizeof(wchar_t) * len;
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// Allocate the new buffer including space for the proceeding dword_t size
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// value and the terminating nul.
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ptr = (dword_t*)malloc(sizeof(dword_t) + size + sizeof(wchar_t));
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if(!ptr)
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return NULL;
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// Set the size as the first value in the newly allocated memory and
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// increment to the string location.
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*ptr = size;
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ptr++;
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if(str != NULL)
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{
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// Copy the string to the buffer.
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memcpy(ptr, str, size);
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}
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else
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{
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// Initialize the string to zeros.
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memset(ptr, 0, size);
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}
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newstr = (wchar_t*)ptr;
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// Nul-terminate the string.
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newstr[len] = '\0';
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return (cef_string_t)newstr;
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}
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CEF_EXPORT int cef_string_realloc(cef_string_t* oldstr, const wchar_t* newstr)
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{
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if(!oldstr)
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return 0;
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// Free the old string.
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cef_string_free(*oldstr);
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// Copy the new string.
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*oldstr = cef_string_alloc(newstr);
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return 1;
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}
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CEF_EXPORT int cef_string_realloc_length(cef_string_t* oldstr,
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const wchar_t* newstr,
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size_t len)
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{
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if(!oldstr)
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return 0;
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// Check that the size can fit in a dword_t.
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if(len >= (UINT_MAX - sizeof(wchar_t) - sizeof(dword_t)) / sizeof(wchar_t))
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return 0;
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if(*oldstr)
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{
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dword_t newsize, *oldptr, *newptr;
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// Get the new size of the string in bytes.
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newsize = sizeof(wchar_t) * len;
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// Adjust the pointer to account for the dword_t immediately proceeding the
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// string value.
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oldptr = (dword_t*)*oldstr;
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oldptr--;
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// Re-allocate the buffer including space for the proceeding dword_t size
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// value and the terminating nul.
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newptr = (dword_t*)realloc(
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oldptr, sizeof(dword_t) + newsize + sizeof(wchar_t));
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if(!newptr)
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return 0;
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// Set the size as the first value in the newly allocated memory and
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// increment to the string location.
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*newptr = newsize;
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newptr++;
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// Set the string pointer to the beginning on the string in the newly
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// allocated memory.
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*oldstr = (cef_string_t)newptr;
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if(newstr)
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{
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// Copy the new string value. Use of memmove() ensures that any
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// overlapping region in the old string will be copied before being
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// overwritten.
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memmove(*oldstr, newstr, newsize);
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// Nul-terminate the string.
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*oldstr[len] = '\0';
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}
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}
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else
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{
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// Allocate the string.
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*oldstr = cef_string_alloc_length(newstr, len);
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}
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return 1;
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}
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CEF_EXPORT void cef_string_free(cef_string_t str)
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{
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dword_t* ptr;
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if(!str)
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return;
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// The size is placed in a dword_t immediately proceeding the string value.
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ptr = (dword_t*)str;
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ptr--;
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free(ptr);
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}
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// Copyright (c) 2009 The Chromium Embedded Framework Authors. All rights
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// reserved. Use of this source code is governed by a BSD-style license that
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// can be found in the LICENSE file.
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#include "include/cef_string.h"
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#include <limits.h>
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#include <malloc.h>
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#include <string.h>
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typedef unsigned long dword_t;
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CEF_EXPORT size_t cef_string_length(cef_string_t str)
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{
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dword_t* ptr;
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if(!str)
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return 0;
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// The string length, in bytes, is placed in a dword_t immediately proceeding
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// the string value.
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ptr = (dword_t*)str;
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ptr--;
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return (size_t)(*ptr / sizeof(wchar_t));
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}
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CEF_EXPORT cef_string_t cef_string_alloc(const wchar_t* str)
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{
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if(!str)
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return NULL;
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return cef_string_alloc_length(str, wcslen(str));
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}
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CEF_EXPORT cef_string_t cef_string_alloc_length(const wchar_t* str,
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size_t len)
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{
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dword_t size, *ptr;
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wchar_t* newstr;
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// Check that the size can fit in a dword_t.
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if(len >= (UINT_MAX - sizeof(wchar_t) - sizeof(dword_t)) / sizeof(wchar_t))
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return NULL;
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// Get the size of the string in bytes.
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size = sizeof(wchar_t) * len;
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// Allocate the new buffer including space for the proceeding dword_t size
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// value and the terminating nul.
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ptr = (dword_t*)malloc(sizeof(dword_t) + size + sizeof(wchar_t));
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if(!ptr)
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return NULL;
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// Set the size as the first value in the newly allocated memory and
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// increment to the string location.
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*ptr = size;
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ptr++;
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if(str != NULL)
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{
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// Copy the string to the buffer.
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memcpy(ptr, str, size);
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}
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else
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{
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// Initialize the string to zeros.
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memset(ptr, 0, size);
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}
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newstr = (wchar_t*)ptr;
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// Nul-terminate the string.
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newstr[len] = '\0';
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return (cef_string_t)newstr;
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}
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CEF_EXPORT int cef_string_realloc(cef_string_t* oldstr, const wchar_t* newstr)
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{
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if(!oldstr)
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return 0;
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// Free the old string.
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cef_string_free(*oldstr);
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// Copy the new string.
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*oldstr = cef_string_alloc(newstr);
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return 1;
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}
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CEF_EXPORT int cef_string_realloc_length(cef_string_t* oldstr,
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const wchar_t* newstr,
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size_t len)
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{
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if(!oldstr)
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return 0;
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// Check that the size can fit in a dword_t.
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if(len >= (UINT_MAX - sizeof(wchar_t) - sizeof(dword_t)) / sizeof(wchar_t))
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return 0;
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if(*oldstr)
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{
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dword_t newsize, *oldptr, *newptr;
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// Get the new size of the string in bytes.
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newsize = sizeof(wchar_t) * len;
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// Adjust the pointer to account for the dword_t immediately proceeding the
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// string value.
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oldptr = (dword_t*)*oldstr;
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oldptr--;
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// Re-allocate the buffer including space for the proceeding dword_t size
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// value and the terminating nul.
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newptr = (dword_t*)realloc(
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oldptr, sizeof(dword_t) + newsize + sizeof(wchar_t));
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if(!newptr)
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return 0;
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// Set the size as the first value in the newly allocated memory and
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// increment to the string location.
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*newptr = newsize;
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newptr++;
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// Set the string pointer to the beginning on the string in the newly
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// allocated memory.
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*oldstr = (cef_string_t)newptr;
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if(newstr)
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{
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// Copy the new string value. Use of memmove() ensures that any
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// overlapping region in the old string will be copied before being
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// overwritten.
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memmove(*oldstr, newstr, newsize);
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// Nul-terminate the string.
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*oldstr[len] = '\0';
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}
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}
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else
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{
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// Allocate the string.
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*oldstr = cef_string_alloc_length(newstr, len);
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}
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return 1;
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}
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CEF_EXPORT void cef_string_free(cef_string_t str)
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{
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dword_t* ptr;
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if(!str)
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return;
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// The size is placed in a dword_t immediately proceeding the string value.
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ptr = (dword_t*)str;
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ptr--;
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free(ptr);
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}
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