Update FLAC to 1.3.1

src/share/win_utf8_io/win_utf8_io.c

Index: src/share/win_utf8_io/win_utf8_io.c
diff --git a/src/share/win_utf8_io/win_utf8_io.c b/src/share/win_utf8_io/win_utf8_io.c
new file mode 100644
index 0000000000000000000000000000000000000000..dd22d5bbba47bf17011e2b40f75bacc48e5894d5
--- /dev/null
+++ b/src/share/win_utf8_io/win_utf8_io.c
@@ -0,0 +1,373 @@
+/* libFLAC - Free Lossless Audio Codec library
+ * Copyright (C) 2013-2014  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 <stdio.h>
+#include <sys/stat.h>
+#include <sys/utime.h>
+#include <io.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h> /* for WideCharToMultiByte and MultiByteToWideChar */
+
+#include "share/win_utf8_io.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;
+}
+
+static UINT win_utf8_io_codepage = CP_ACP;
+
+/* 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;
+	len=(int)strlen(str)+1;
+	if ((widestr = (wchar_t *)malloc(len*sizeof(wchar_t))) != NULL) {
+		if (MultiByteToWideChar(win_utf8_io_codepage, 0, str, len, widestr, len) == 0) {
+			if (MultiByteToWideChar(CP_ACP, 0, str, len, widestr, len) == 0) { /* try conversion from Ansi in case the initial UTF-8 conversion had failed */
+				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 = LoadLibraryA("msvcrt.dll")) == NULL) return 1;
+	if ((wgetmainargs = (wgetmainargs_t)GetProcAddress(handle, "__wgetmainargs")) == NULL) return 1;
+	i = 0;
+	/* if __wgetmainargs expands wildcards then it also erroneously converts \\?\c:\path\to\file.flac to \\file.flac */
+	if (wgetmainargs(&wargc, &wargv, &wenv, 1, &i) != 0) return 1;
+	if ((utf8argv = (char **)calloc(wargc, sizeof(char*))) == NULL) return 1;
+	ret = 0;
+
+	for (i=0; i<wargc; i++) {
+		if ((utf8argv[i] = utf8_from_wchar(wargv[i])) == NULL) {
+			ret = 1;
+			break;
+		}
+	}
+
+	FreeLibrary(handle);
+
+	if (ret == 0) {
+		win_utf8_io_codepage = CP_UTF8;
+		*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;
+	if ((len = MultiByteToWideChar(win_utf8_io_codepage, 0, str, -1, NULL, 0)) == 0)
+		len = strlen(str);
+	return len;
+}
+
+/* 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 (GetConsoleScreenBufferInfo(hOut, &csbi) != 0) width = csbi.dwSize.X;
+	return width;
+}
+
+/* print functions */
+
+int print_console(FILE *stream, const wchar_t *text, size_t len)
+{
+	static HANDLE hOut;
+	static HANDLE hErr;
+	DWORD out;
+	hOut = GetStdHandle(STD_OUTPUT_HANDLE);
+	hErr = GetStdHandle(STD_ERROR_HANDLE);
+	if (stream == stdout && hOut != INVALID_HANDLE_VALUE && GetFileType(hOut) == FILE_TYPE_CHAR) {
+		if (WriteConsoleW(hOut, text, len, &out, NULL) == 0) return -1;
+		return out;
+	} else if (stream == stderr && hErr != INVALID_HANDLE_VALUE && GetFileType(hErr) == FILE_TYPE_CHAR) {
+		if (WriteConsoleW(hErr, text, len, &out, NULL) == 0) return -1;
+		return out;
+	} else {
+		int ret = fputws(text, stream);
+		if (ret < 0) return ret;
+		return len;
+	}
+}
+
+int printf_utf8(const char *format, ...)
+{
+	char *utmp = NULL;
+	wchar_t *wout = NULL;
+	int ret = -1;
+
+	while (1) {
+		va_list argptr;
+		if (!(utmp = (char *)malloc(UTF8_BUFFER_SIZE*sizeof(char)))) break;
+		va_start(argptr, format);
+		ret = local_vsnprintf(utmp, UTF8_BUFFER_SIZE, format, argptr);
+		va_end(argptr);
+		if (ret < 0) break;
+		if (!(wout = wchar_from_utf8(utmp))) {
+			ret = -1;
+			break;
+		}
+		ret = print_console(stdout, wout, wcslen(wout));
+		break;
+	}
+	if (utmp) free(utmp);
+	if (wout) free(wout);
+
+	return ret;
+}
+
+int fprintf_utf8(FILE *stream, const char *format, ...)
+{
+	char *utmp = NULL;
+	wchar_t *wout = NULL;
+	int ret = -1;
+
+	while (1) {
+		va_list argptr;
+		if (!(utmp = (char *)malloc(UTF8_BUFFER_SIZE*sizeof(char)))) break;
+		va_start(argptr, format);
+		ret = local_vsnprintf(utmp, UTF8_BUFFER_SIZE, format, argptr);
+		va_end(argptr);
+		if (ret < 0) break;
+		if (!(wout = wchar_from_utf8(utmp))) {
+			ret = -1;
+			break;
+		}
+		ret = print_console(stream, wout, wcslen(wout));
+		break;
+	}
+	if (utmp) free(utmp);
+	if (wout) free(wout);
+
+	return ret;
+}
+
+int vfprintf_utf8(FILE *stream, const char *format, va_list argptr)
+{
+	char *utmp = NULL;
+	wchar_t *wout = NULL;
+	int ret = -1;
+
+	while (1) {
+		if (!(utmp = (char *)malloc(UTF8_BUFFER_SIZE*sizeof(char)))) break;
+		if ((ret = local_vsnprintf(utmp, UTF8_BUFFER_SIZE, format, argptr)) < 0) break;
+		if (!(wout = wchar_from_utf8(utmp))) {
+			ret = -1;
+			break;
+		}
+		ret = print_console(stream, wout, wcslen(wout));
+		break;
+	}
+	if (utmp) free(utmp);
+	if (wout) free(wout);
+
+	return ret;
+}
+
+/* file functions */
+
+FILE *fopen_utf8(const char *filename, const char *mode)
+{
+	wchar_t *wname = NULL;
+	wchar_t *wmode = NULL;
+	FILE *f = NULL;
+
+	while (1) {
+		if (!(wname = wchar_from_utf8(filename))) break;
+		if (!(wmode = wchar_from_utf8(mode))) break;
+		f = _wfopen(wname, wmode);
+		break;
+	}
+	if (wname) free(wname);
+	if (wmode) free(wmode);
+
+	return f;
+}
+
+int _stat64_utf8(const char *path, struct __stat64 *buffer)
+{
+	wchar_t *wpath;
+	int ret;
+
+	if (!(wpath = wchar_from_utf8(path))) return -1;
+	ret = _wstat64(wpath, buffer);
+	free(wpath);
+
+	return ret;
+}
+
+int chmod_utf8(const char *filename, int pmode)
+{
+	wchar_t *wname;
+	int ret;
+
+	if (!(wname = wchar_from_utf8(filename))) return -1;
+	ret = _wchmod(wname, pmode);
+	free(wname);
+
+	return ret;
+}
+
+int utime_utf8(const char *filename, struct utimbuf *times)
+{
+	wchar_t *wname;
+	struct __utimbuf64 ut;
+	int ret;
+
+	if (sizeof(*times) == sizeof(ut)) {
+		memcpy(&ut, times, sizeof(ut));
+	} else {
+		ut.actime = times->actime;
+		ut.modtime = times->modtime;
+	}
+
+	if (!(wname = wchar_from_utf8(filename))) return -1;
+	ret = _wutime64(wname, &ut);
+	free(wname);
+
+	return ret;
+}
+
+int unlink_utf8(const char *filename)
+{
+	wchar_t *wname;
+	int ret;
+
+	if (!(wname = wchar_from_utf8(filename))) return -1;
+	ret = _wunlink(wname);
+	free(wname);
+
+	return ret;
+}
+
+int rename_utf8(const char *oldname, const char *newname)
+{
+	wchar_t *wold = NULL;
+	wchar_t *wnew = NULL;
+	int ret = -1;
+
+	while (1) {
+		if (!(wold = wchar_from_utf8(oldname))) break;
+		if (!(wnew = wchar_from_utf8(newname))) break;
+		ret = _wrename(wold, wnew);
+		break;
+	}
+	if (wold) free(wold);
+	if (wnew) free(wnew);
+
+	return ret;
+}
+
+HANDLE WINAPI CreateFile_utf8(const char *lpFileName, DWORD dwDesiredAccess, DWORD dwShareMode, LPSECURITY_ATTRIBUTES lpSecurityAttributes, DWORD dwCreationDisposition, DWORD dwFlagsAndAttributes, HANDLE hTemplateFile)
+{
+	wchar_t *wname;
+	HANDLE handle = INVALID_HANDLE_VALUE;
+
+	if ((wname = wchar_from_utf8(lpFileName)) != NULL) {
+		handle = CreateFileW(wname, dwDesiredAccess, dwShareMode, lpSecurityAttributes, dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile);
+		free(wname);
+	}
+
+	return handle;
+}