forked from Green-Sky/tomato
Green Sky
67653bbe50
git-subtree-dir: external/libwebp/libwebp git-subtree-split: dd7364c3cefe0f5c0b3c18c3b1887d353f90fc1f
117 lines
4.4 KiB
C
117 lines
4.4 KiB
C
// Copyright 2018 Google Inc. All Rights Reserved.
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//
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// Use of this source code is governed by a BSD-style license
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// that can be found in the COPYING file in the root of the source
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// tree. An additional intellectual property rights grant can be found
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// in the file PATENTS. All contributing project authors may
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// be found in the AUTHORS file in the root of the source tree.
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// -----------------------------------------------------------------------------
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//
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// Unicode support for Windows. The main idea is to maintain an array of Unicode
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// arguments (wargv) and use it only for file paths. The regular argv is used
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// for everything else.
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//
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// Author: Yannis Guyon (yguyon@google.com)
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#ifndef WEBP_EXAMPLES_UNICODE_H_
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#define WEBP_EXAMPLES_UNICODE_H_
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#include <stdio.h>
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#if defined(_WIN32) && defined(_UNICODE)
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// wchar_t is used instead of TCHAR because we only perform additional work when
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// Unicode is enabled and because the output of CommandLineToArgvW() is wchar_t.
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#include <fcntl.h>
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#include <io.h>
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#include <wchar.h>
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#include <windows.h>
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#include <shellapi.h>
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// Create a wchar_t array containing Unicode parameters.
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#define INIT_WARGV(ARGC, ARGV) \
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int wargc; \
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const W_CHAR** const wargv = \
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(const W_CHAR**)CommandLineToArgvW(GetCommandLineW(), &wargc); \
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do { \
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if (wargv == NULL || wargc != (ARGC)) { \
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fprintf(stderr, "Error: Unable to get Unicode arguments.\n"); \
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FREE_WARGV_AND_RETURN(-1); \
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} \
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} while (0)
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// Use this to get a Unicode argument (e.g. file path).
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#define GET_WARGV(UNUSED, C) wargv[C]
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// For cases where argv is shifted by one compared to wargv.
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#define GET_WARGV_SHIFTED(UNUSED, C) wargv[(C) + 1]
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#define GET_WARGV_OR_NULL() wargv
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// Release resources. LocalFree() is needed after CommandLineToArgvW().
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#define FREE_WARGV() LOCAL_FREE((W_CHAR** const)wargv)
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#define LOCAL_FREE(WARGV) \
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do { \
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if ((WARGV) != NULL) LocalFree(WARGV); \
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} while (0)
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#define W_CHAR wchar_t // WCHAR without underscore might already be defined.
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#define TO_W_CHAR(STR) (L##STR)
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#define WFOPEN(ARG, OPT) _wfopen((const W_CHAR*)ARG, TO_W_CHAR(OPT))
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#define WFPRINTF(STREAM, STR, ...) \
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do { \
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int prev_mode; \
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fflush(STREAM); \
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prev_mode = _setmode(_fileno(STREAM), _O_U8TEXT); \
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fwprintf(STREAM, TO_W_CHAR(STR), __VA_ARGS__); \
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fflush(STREAM); \
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(void)_setmode(_fileno(STREAM), prev_mode); \
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} while (0)
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#define WPRINTF(STR, ...) WFPRINTF(stdout, STR, __VA_ARGS__)
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#define WSTRLEN(FILENAME) wcslen((const W_CHAR*)FILENAME)
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#define WSTRCMP(FILENAME, STR) wcscmp((const W_CHAR*)FILENAME, TO_W_CHAR(STR))
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#define WSTRRCHR(FILENAME, STR) wcsrchr((const W_CHAR*)FILENAME, TO_W_CHAR(STR))
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#define WSNPRINTF(A, B, STR, ...) _snwprintf(A, B, TO_W_CHAR(STR), __VA_ARGS__)
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#else
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#include <string.h>
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// Unicode file paths work as is on Unix platforms, and no extra work is done on
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// Windows either if Unicode is disabled.
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#define INIT_WARGV(ARGC, ARGV)
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#define GET_WARGV(ARGV, C) (ARGV)[C]
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#define GET_WARGV_SHIFTED(ARGV, C) (ARGV)[C]
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#define GET_WARGV_OR_NULL() NULL
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#define FREE_WARGV()
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#define LOCAL_FREE(WARGV)
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#define W_CHAR char
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#define TO_W_CHAR(STR) (STR)
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#define WFOPEN(ARG, OPT) fopen(ARG, OPT)
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#define WPRINTF(STR, ...) printf(STR, __VA_ARGS__)
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#define WFPRINTF(STREAM, STR, ...) fprintf(STREAM, STR, __VA_ARGS__)
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#define WSTRLEN(FILENAME) strlen(FILENAME)
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#define WSTRCMP(FILENAME, STR) strcmp(FILENAME, STR)
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#define WSTRRCHR(FILENAME, STR) strrchr(FILENAME, STR)
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#define WSNPRINTF(A, B, STR, ...) snprintf(A, B, STR, __VA_ARGS__)
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#endif // defined(_WIN32) && defined(_UNICODE)
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// Don't forget to free wargv before returning (e.g. from main).
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#define FREE_WARGV_AND_RETURN(VALUE) \
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do { \
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FREE_WARGV(); \
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return (VALUE); \
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} while (0)
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#endif // WEBP_EXAMPLES_UNICODE_H_
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