mirror of
https://github.com/webmproject/libwebp.git
synced 2024-12-27 14:18:21 +01:00
9cf9841b5e
Define macros in examples/unicode.h to use Unicode argv on Windows. Keep char everywhere on Unix since it handles UTF-8 without any change. Impact: - All fopen () and SHCreateStreamOnFile(), - All fprintf() printing file paths, - All strcmp() used with "-", - File path parsing, - Gif reading. Concerned executables from examples/ and extras/: anim_diff, anim_dump, vwebp, vwebp_sdl, cwebp, dwebp, gif2webp, img2webp, webpmux, webpinfo, webp_quality, get_disto When compiled on Windows with Unicode enabled, webpmux and img2webp will not work when used with an argument file and will print "Reading arguments from a file is a feature unavailable with Unicode binaries." BUG=webp:398 Change-Id: Ic55d222a3ce1a715f9c4cce57ecbe2705d5ce317
102 lines
3.9 KiB
C
102 lines
3.9 KiB
C
// Copyright 2018 Google Inc. All Rights Reserved.
|
|
//
|
|
// Use of this source code is governed by a BSD-style license
|
|
// that can be found in the COPYING file in the root of the source
|
|
// tree. An additional intellectual property rights grant can be found
|
|
// in the file PATENTS. All contributing project authors may
|
|
// be found in the AUTHORS file in the root of the source tree.
|
|
// -----------------------------------------------------------------------------
|
|
//
|
|
// Unicode support for Windows. The main idea is to maintain an array of Unicode
|
|
// arguments (wargv) and use it only for file paths. The regular argv is used
|
|
// for everything else.
|
|
//
|
|
// Author: Yannis Guyon (yguyon@google.com)
|
|
|
|
#ifndef WEBP_EXAMPLES_UNICODE_H_
|
|
#define WEBP_EXAMPLES_UNICODE_H_
|
|
|
|
#if defined(_WIN32) && defined(_UNICODE)
|
|
|
|
// wchar_t is used instead of TCHAR because we only perform additional work when
|
|
// Unicode is enabled and because the output of CommandLineToArgvW() is wchar_t.
|
|
|
|
#include <wchar.h>
|
|
#include <windows.h>
|
|
#include <shellapi.h>
|
|
|
|
// Create a wchar_t array containing Unicode parameters.
|
|
#define INIT_WARGV(ARGC, ARGV) \
|
|
int wargc; \
|
|
const W_CHAR** const wargv = CommandLineToArgvW(GetCommandLineW(), &wargc); \
|
|
do { \
|
|
if (wargv == NULL || wargc != (ARGC)) { \
|
|
fprintf(stderr, "Error: Unable to get Unicode arguments.\n"); \
|
|
FREE_WARGV_AND_RETURN(-1); \
|
|
} \
|
|
} while (0)
|
|
|
|
// Use this to get a Unicode argument (e.g. file path).
|
|
#define GET_WARGV(UNUSED, C) wargv[C]
|
|
// For cases where argv is shifted by one compared to wargv.
|
|
#define GET_WARGV_SHIFTED(UNUSED, C) wargv[(C) + 1]
|
|
#define GET_WARGV_OR_NULL() wargv
|
|
|
|
// Release resources. LocalFree() is needed after CommandLineToArgvW().
|
|
#define FREE_WARGV() LOCAL_FREE((W_CHAR** const)wargv)
|
|
#define LOCAL_FREE(WARGV) \
|
|
do { \
|
|
if ((WARGV) != NULL) LocalFree(WARGV); \
|
|
} while (0)
|
|
|
|
#define W_CHAR wchar_t // WCHAR without underscore might already be defined.
|
|
#define TO_W_CHAR(STR) (L##STR)
|
|
|
|
#define WFOPEN(ARG, OPT) _wfopen((const W_CHAR*)ARG, TO_W_CHAR(OPT))
|
|
|
|
#define WPRINTF(STR, ...) wprintf(TO_W_CHAR(STR), __VA_ARGS__)
|
|
#define WFPRINTF(STDERR, STR, ...) fwprintf(STDERR, TO_W_CHAR(STR), __VA_ARGS__)
|
|
|
|
#define WSTRLEN(FILENAME) wcslen((const W_CHAR*)FILENAME)
|
|
#define WSTRCMP(FILENAME, STR) wcscmp((const W_CHAR*)FILENAME, TO_W_CHAR(STR))
|
|
#define WSTRRCHR(FILENAME, STR) wcsrchr((const W_CHAR*)FILENAME, TO_W_CHAR(STR))
|
|
#define WSNPRINTF(A, B, STR, ...) _snwprintf(A, B, TO_W_CHAR(STR), __VA_ARGS__)
|
|
|
|
#else
|
|
|
|
// Unicode file paths work as is on Unix platforms, and no extra work is done on
|
|
// Windows either if Unicode is disabled.
|
|
|
|
#define INIT_WARGV(ARGC, ARGV)
|
|
|
|
#define GET_WARGV(ARGV, C) (ARGV)[C]
|
|
#define GET_WARGV_SHIFTED(ARGV, C) (ARGV)[C]
|
|
#define GET_WARGV_OR_NULL() NULL
|
|
|
|
#define FREE_WARGV()
|
|
#define LOCAL_FREE(WARGV)
|
|
|
|
#define W_CHAR char
|
|
#define TO_W_CHAR(STR) (STR)
|
|
|
|
#define WFOPEN(ARG, OPT) fopen(ARG, OPT)
|
|
|
|
#define WPRINTF(STR, ...) printf(STR, __VA_ARGS__)
|
|
#define WFPRINTF(STDERR, STR, ...) fprintf(STDERR, STR, __VA_ARGS__)
|
|
|
|
#define WSTRLEN(FILENAME) strlen(FILENAME)
|
|
#define WSTRCMP(FILENAME, STR) strcmp(FILENAME, STR)
|
|
#define WSTRRCHR(FILENAME, STR) strrchr(FILENAME, STR)
|
|
#define WSNPRINTF(A, B, STR, ...) snprintf(A, B, STR, __VA_ARGS__)
|
|
|
|
#endif // defined(_WIN32) && defined(_UNICODE)
|
|
|
|
// Don't forget to free wargv before returning (e.g. from main).
|
|
#define FREE_WARGV_AND_RETURN(VALUE) \
|
|
do { \
|
|
FREE_WARGV(); \
|
|
return (VALUE); \
|
|
} while (0)
|
|
|
|
#endif // WEBP_EXAMPLES_UNICODE_H_
|