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Refactoring of win_utf8_io

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* Simplifies *print functions.
* Improves file related functions.
* Preparation to move all file related functions into libFLAC.

Patch-from: lvqcl <lvqcl.mail@gmail.com>
This commit is contained in:
Erik de Castro Lopo
2016-01-31 12:42:23 +11:00
parent 7917b60bdb
commit 7be5df6c7f
3 changed files with 175 additions and 159 deletions
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2
include/share/compat.h
View File

@@ -151,6 +151,7 @@
#define flac_printf printf_utf8
#define flac_fprintf fprintf_utf8
#define flac_vfprintf vfprintf_utf8
#define flac_fopen fopen_utf8
#define flac_chmod chmod_utf8
#define flac_utime utime_utf8
@@ -163,6 +164,7 @@
#define flac_printf printf
#define flac_fprintf fprintf
#define flac_vfprintf vfprintf
#define flac_fopen fopen
#define flac_chmod chmod
#define flac_utime utime

7
include/share/win_utf8_io.h
View File

@@ -43,6 +43,9 @@ extern "C" {
#include <stdarg.h>
#include <windows.h>
size_t strlen_utf8(const char *str);
int win_get_console_width(void);
int get_utf8_argv(int *argc, char ***argv);
int printf_utf8(const char *format, ...);
@@ -50,15 +53,11 @@ int fprintf_utf8(FILE *stream, const char *format, ...);
int vfprintf_utf8(FILE *stream, const char *format, va_list argptr);
FILE *fopen_utf8(const char *filename, const char *mode);
int stat_utf8(const char *path, struct stat *buffer);
int _stat64_utf8(const char *path, struct __stat64 *buffer);
int chmod_utf8(const char *filename, int pmode);
int utime_utf8(const char *filename, struct utimbuf *times);
int unlink_utf8(const char *filename);
int rename_utf8(const char *oldname, const char *newname);
size_t strlen_utf8(const char *str);
int win_get_console_width(void);
int print_console(FILE *stream, const wchar_t *text, size_t len);
HANDLE WINAPI CreateFile_utf8(const char *lpFileName, DWORD dwDesiredAccess, DWORD dwShareMode, LPSECURITY_ATTRIBUTES lpSecurityAttributes, DWORD dwCreationDisposition, DWORD dwFlagsAndAttributes, HANDLE hTemplateFile);
#ifdef __cplusplus

325
src/share/win_utf8_io/win_utf8_io.c
View File

@@ -40,45 +40,41 @@
#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)
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);
rc = vsnprintf_s(str, size, _TRUNCATE, fmt, va);
if (rc < 0)
rc = size - 1;
#elif defined __MINGW32__
rc = __mingw_vsnprintf (str, size, fmt, va);
rc = __mingw_vsnprintf(str, size, fmt, va);
#else
rc = vsnprintf (str, size, fmt, va);
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)
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 (!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;
@@ -88,26 +84,27 @@ char *utf8_from_wchar(const wchar_t *wstr)
}
/* convert UTF-8 back to WCHAR. Caller is responsible for freeing memory */
static
wchar_t *wchar_from_utf8(const char *str)
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;
}
}
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;
}
void set_filename_utf8(int b);
/* retrieve WCHAR commandline, expand wildcards and convert everything to UTF-8 */
int get_utf8_argv(int *argc, char ***argv)
{
@@ -126,7 +123,7 @@ int get_utf8_argv(int *argc, char ***argv)
return 1;
}
i = 0;
/* if __wgetmainargs expands wildcards then it also erroneously converts \\?\c:\path\to\file.flac to \\file.flac */
/* 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;
@@ -147,7 +144,7 @@ int get_utf8_argv(int *argc, char ***argv)
FreeLibrary(handle); /* do not free it when wargv or wenv are still in use */
if (ret == 0) {
win_utf8_io_codepage = CP_UTF8;
set_filename_utf8(1);
*argc = wargc;
*argv = utf8argv;
} else {
@@ -163,9 +160,11 @@ int get_utf8_argv(int *argc, char ***argv)
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;
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 */
@@ -174,80 +173,66 @@ 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;
if(hOut != INVALID_HANDLE_VALUE && hOut != NULL)
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 int wprint_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 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, ...)
{
char *utmp = NULL;
wchar_t *wout = NULL;
int ret = -1;
int ret;
va_list argptr;
va_start(argptr, format);
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);
ret = vfprintf_utf8(stdout, format, argptr);
va_end(argptr);
return ret;
}
int fprintf_utf8(FILE *stream, const char *format, ...)
{
char *utmp = NULL;
wchar_t *wout = NULL;
int ret = -1;
int ret;
va_list argptr;
va_start(argptr, format);
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);
ret = vfprintf_utf8(stream, format, argptr);
va_end(argptr);
return ret;
}
@@ -258,125 +243,155 @@ int vfprintf_utf8(FILE *stream, const char *format, va_list argptr)
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;
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 = print_console(stream, wout, wcslen(wout));
break;
}
if (utmp) free(utmp);
if (wout) free(wout);
ret = wprint_console(stream, wout, wcslen(wout));
} while(0);
free(utmp);
free(wout);
return ret;
}
/* file functions */
static int utf8_filename = 0;
static void set_filename_utf8(int b)
{
utf8_filename = b ? 1: 0;
}
FILE *fopen_utf8(const char *filename, const char *mode)
{
wchar_t *wname = NULL;
wchar_t *wmode = NULL;
FILE *f = NULL;
if (0 == utf8_filename) {
return fopen(filename, mode);
} else {
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;
do {
if (!(wname = wchar_from_utf8(filename))) break;
if (!(wmode = wchar_from_utf8(mode))) break;
f = _wfopen(wname, wmode);
} while(0);
free(wname);
free(wmode);
return f;
}
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 (0 == utf8_filename) {
return _stat64(path, buffer);
} else {
wchar_t *wpath;
int ret;
if (!(wpath = wchar_from_utf8(path))) return -1;
ret = _wstat64(wpath, buffer);
free(wpath);
if (!(wpath = wchar_from_utf8(path))) return -1;
ret = _wstat64(wpath, buffer);
free(wpath);
return ret;
return ret;
}
}
int chmod_utf8(const char *filename, int pmode)
{
wchar_t *wname;
int ret;
if (0 == utf8_filename) {
return _chmod(filename, pmode);
} else {
wchar_t *wname;
int ret;
if (!(wname = wchar_from_utf8(filename))) return -1;
ret = _wchmod(wname, pmode);
free(wname);
if (!(wname = wchar_from_utf8(filename))) return -1;
ret = _wchmod(wname, pmode);
free(wname);
return ret;
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));
if (0 == utf8_filename) {
return utime(filename, times);
} else {
wchar_t *wname;
struct __utimbuf64 ut;
int ret;
if (!(wname = wchar_from_utf8(filename))) return -1;
ut.actime = times->actime;
ut.modtime = times->modtime;
ret = _wutime64(wname, &ut);
free(wname);
return ret;
}
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 (0 == utf8_filename) {
return _unlink(filename);
} else {
wchar_t *wname;
int ret;
if (!(wname = wchar_from_utf8(filename))) return -1;
ret = _wunlink(wname);
free(wname);
if (!(wname = wchar_from_utf8(filename))) return -1;
ret = _wunlink(wname);
free(wname);
return ret;
return ret;
}
}
int rename_utf8(const char *oldname, const char *newname)
{
wchar_t *wold = NULL;
wchar_t *wnew = NULL;
int ret = -1;
if (0 == utf8_filename) {
return rename(oldname, newname);
} else {
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;
do {
if (!(wold = wchar_from_utf8(oldname))) break;
if (!(wnew = wchar_from_utf8(newname))) break;
ret = _wrename(wold, wnew);
} while(0);
free(wold);
free(wnew);
return ret;
}
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 (0 == utf8_filename) {
return CreateFileA(lpFileName, dwDesiredAccess, dwShareMode, lpSecurityAttributes, dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile);
} else {
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);
if ((wname = wchar_from_utf8(lpFileName)) != NULL) {
handle = CreateFileW(wname, dwDesiredAccess, dwShareMode, lpSecurityAttributes, dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile);
free(wname);
}
return handle;
}
return handle;
}