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/* libFLAC - Free Lossless Audio Codec library
* Copyright (C) 2013-2016 Xiph.Org Foundation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of the Xiph.org Foundation nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <windows.h>
#include "share/win_utf8_io.h"
#include "share/windows_unicode_filenames.h"
#define UTF8_BUFFER_SIZE 32768
static int local_vsnprintf(char *str, size_t size, const char *fmt, va_list va)
{
int rc;
#if defined _MSC_VER
if (size == 0)
return 1024;
rc = vsnprintf_s(str, size, _TRUNCATE, fmt, va);
if (rc < 0)
rc = size - 1;
#elif defined __MINGW32__
rc = __mingw_vsnprintf(str, size, fmt, va);
#else
rc = vsnprintf(str, size, fmt, va);
#endif
return rc;
}
/* convert WCHAR stored Unicode string to UTF-8. Caller is responsible for freeing memory */
static char *utf8_from_wchar(const wchar_t *wstr)
{
char *utf8str;
int len;
if (!wstr)
return NULL;
if ((len = WideCharToMultiByte(CP_UTF8, 0, wstr, -1, NULL, 0, NULL, NULL)) == 0)
return NULL;
if ((utf8str = (char *)malloc(len)) == NULL)
return NULL;
if (WideCharToMultiByte(CP_UTF8, 0, wstr, -1, utf8str, len, NULL, NULL) == 0) {
free(utf8str);
utf8str = NULL;
}
return utf8str;
}
/* convert UTF-8 back to WCHAR. Caller is responsible for freeing memory */
static wchar_t *wchar_from_utf8(const char *str)
{
wchar_t *widestr;
int len;
if (!str)
return NULL;
if ((len = MultiByteToWideChar(CP_UTF8, 0, str, -1, NULL, 0)) == 0)
return NULL;
if ((widestr = (wchar_t *)malloc(len*sizeof(wchar_t))) == NULL)
return NULL;
if (MultiByteToWideChar(CP_UTF8, 0, str, -1, widestr, len) == 0) {
free(widestr);
widestr = NULL;
}
return widestr;
}
/* retrieve WCHAR commandline, expand wildcards and convert everything to UTF-8 */
int get_utf8_argv(int *argc, char ***argv)
{
typedef int (__cdecl *wgetmainargs_t)(int*, wchar_t***, wchar_t***, int, int*);
wgetmainargs_t wgetmainargs;
HMODULE handle;
int wargc;
wchar_t **wargv;
wchar_t **wenv;
char **utf8argv;
int ret, i;
if ((handle = LoadLibrary("msvcrt.dll")) == NULL) return 1;
if ((wgetmainargs = (wgetmainargs_t)GetProcAddress(handle, "__wgetmainargs")) == NULL) {
FreeLibrary(handle);
return 1;
}
i = 0;
/* when the 4th argument is 1, __wgetmainargs expands wildcards but also erroneously converts \\?\c:\path\to\file.flac to \\file.flac */
if (wgetmainargs(&wargc, &wargv, &wenv, 1, &i) != 0) {
FreeLibrary(handle);
return 1;
}
if ((utf8argv = (char **)calloc(wargc, sizeof(char*))) == NULL) {
FreeLibrary(handle);
return 1;
}
ret = 0;
for (i=0; i<wargc; i++) {
if ((utf8argv[i] = utf8_from_wchar(wargv[i])) == NULL) {
ret = 1;
break;
}
}
FreeLibrary(handle); /* do not free it when wargv or wenv are still in use */
if (ret == 0) {
flac_set_utf8_filenames(true);
*argc = wargc;
*argv = utf8argv;
} else {
for (i=0; i<wargc; i++)
free(utf8argv[i]);
free(utf8argv);
}
return ret;
}
/* return number of characters in the UTF-8 string */
size_t strlen_utf8(const char *str)
{
size_t len;
len = MultiByteToWideChar(CP_UTF8, 0, str, -1, NULL, 0); /* includes terminating null */
if (len != 0)
return len-1;
else
return strlen(str);
}
/* get the console width in characters */
int win_get_console_width(void)
{
int width = 80;
CONSOLE_SCREEN_BUFFER_INFO csbi;
HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE);
if(hOut != INVALID_HANDLE_VALUE && hOut != NULL)
if (GetConsoleScreenBufferInfo(hOut, &csbi) != 0)
width = csbi.dwSize.X;
return width;
}
/* print functions */
static int wprint_console(FILE *stream, const wchar_t *text, size_t len)
{
DWORD out;
int ret;
do {
if (stream == stdout) {
HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE);
if (hOut == INVALID_HANDLE_VALUE || hOut == NULL || GetFileType(hOut) != FILE_TYPE_CHAR)
break;
if (WriteConsoleW(hOut, text, len, &out, NULL) == 0)
return -1;
return out;
}
if (stream == stderr) {
HANDLE hErr = GetStdHandle(STD_ERROR_HANDLE);
if (hErr == INVALID_HANDLE_VALUE || hErr == NULL || GetFileType(hErr) != FILE_TYPE_CHAR)
break;
if (WriteConsoleW(hErr, text, len, &out, NULL) == 0)
return -1;
return out;
}
} while(0);
ret = fputws(text, stream);
if (ret < 0)
return ret;
return len;
}
int printf_utf8(const char *format, ...)
{
int ret;
va_list argptr;
va_start(argptr, format);
ret = vfprintf_utf8(stdout, format, argptr);
va_end(argptr);
return ret;
}
int fprintf_utf8(FILE *stream, const char *format, ...)
{
int ret;
va_list argptr;
va_start(argptr, format);
ret = vfprintf_utf8(stream, format, argptr);
va_end(argptr);
return ret;
}
int vfprintf_utf8(FILE *stream, const char *format, va_list argptr)
{
char *utmp = NULL;
wchar_t *wout = NULL;
int ret = -1;
do {
if (!(utmp = (char *)malloc(UTF8_BUFFER_SIZE))) break;
if ((ret = local_vsnprintf(utmp, UTF8_BUFFER_SIZE, format, argptr)) <= 0) break;
if (!(wout = wchar_from_utf8(utmp))) {
ret = -1;
break;
}
ret = wprint_console(stream, wout, wcslen(wout));
} while(0);
free(utmp);
free(wout);
return ret;
}
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