<commit_before>/*****************************************************************************
 * unicode.c: Unicode <-> locale functions
 *****************************************************************************
 * Copyright (C) 2005-2006 the VideoLAN team
 * Copyright © 2005-2008 <NAME>
 *
 * Authors: <NAME> <rem # videolan.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <vlc_common.h>
#include <vlc_charset.h>

#include <assert.h>

#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <sys/types.h>
#ifdef UNDER_CE
#  include <tchar.h>
#endif
#include <errno.h>

#if defined (__APPLE__) || defined (HAVE_MAEMO)
/* Define this if the OS always use UTF-8 internally */
# define ASSUME_UTF8 1
#endif

#if defined (ASSUME_UTF8)
/* Cool */
#elif defined (WIN32) || defined (UNDER_CE)
# define USE_MB2MB 1
#elif defined (HAVE_ICONV)
# define USE_ICONV 1
#else
# error No UTF8 charset conversion implemented on this platform!
#endif

#if defined (USE_ICONV)
# include <langinfo.h>
static char charset[sizeof ("CSISO11SWEDISHFORNAMES")] = "";

static void find_charset_once (void)
{
    strlcpy (charset, nl_langinfo (CODESET), sizeof (charset));
    if (!strcasecmp (charset, "ASCII")
     || !strcasecmp (charset, "ANSI_X3.4-1968"))
        strcpy (charset, "UTF-8"); /* superset... */
}

static int find_charset (void)
{
    static pthread_once_t once = PTHREAD_ONCE_INIT;
    pthread_once (&once, find_charset_once);
    return !strcasecmp (charset, "UTF-8");
}
#endif


static char *locale_fast (const char *string, bool from)
{
    if( string == NULL )
        return NULL;

#if defined (USE_ICONV)
    if (find_charset ())
        return (char *)string;

    vlc_iconv_t hd = vlc_iconv_open (from ? "UTF-8" : charset,
                                     from ? charset : "UTF-8");
    if (hd == (vlc_iconv_t)(-1))
        return NULL; /* Uho! */

    const char *iptr = string;
    size_t inb = strlen (string);
    size_t outb = inb * 6 + 1;
    char output[outb], *optr = output;

    while (vlc_iconv (hd, &iptr, &inb, &optr, &outb) == (size_t)(-1))
    {
        *optr++ = '?';
        outb--;
        iptr++;
        inb--;
        vlc_iconv (hd, NULL, NULL, NULL, NULL); /* reset */
    }
    *optr = '\0';
    vlc_iconv_close (hd);

    assert (inb == 0);
    assert (*iptr == '\0');
    assert (*optr == '\0');
    assert (strlen (output) == (size_t)(optr - output));
    return strdup (output);
#elif defined (USE_MB2MB)
    char *out;
    int len;

    len = 1 + MultiByteToWideChar (from ? CP_ACP : CP_UTF8,
                                   0, string, -1, NULL, 0);
    wchar_t *wide = malloc (len * sizeof (wchar_t));
    if (wide == NULL)
        return NULL;

    MultiByteToWideChar (from ? CP_ACP : CP_UTF8, 0, string, -1, wide, len);
    len = 1 + WideCharToMultiByte (from ? CP_UTF8 : CP_ACP, 0, wide, -1,
                                   NULL, 0, NULL, NULL);
    out = malloc (len);
    if (out != NULL)
        WideCharToMultiByte (from ? CP_UTF8 : CP_ACP, 0, wide, -1, out, len,
                             NULL, NULL);
    free (wide);
    return out;
#else
    (void)from;
    return (char *)string;
#endif
}


static inline char *locale_dup (const char *string, bool from)
{
    assert( string );

#if defined (USE_ICONV)
    if (find_charset ())
        return strdup (string);
    return locale_fast (string, from);
#elif defined (USE_MB2MB)
    return locale_fast (string, from);
#else
    (void)from;
    return strdup (string);
#endif
}

/**
 * Releases (if needed) a localized or uniformized string.
 * @param str non-NULL return value from FromLocale() or ToLocale().
 */
void LocaleFree (const char *str)
{
#if defined (USE_ICONV)
    if (!find_charset ())
        free ((char *)str);
#elif defined (USE_MB2MB)
    free ((char *)str);
#else
    (void)str;
#endif
}


/**
 * Converts a string from the system locale character encoding to UTF-8.
 *
 * @param locale nul-terminated string to convert
 *
 * @return a nul-terminated UTF-8 string, or NULL in case of error.
 * To avoid memory leak, you have to pass the result to LocaleFree()
 * when it is no longer needed.
 */
char *FromLocale (const char *locale)
{
    return locale_fast (locale, true);
}

/**
 * converts a string from the system locale character encoding to utf-8,<commit_msg>nl_langinfo is not thread-safe, avoid it<commit_after>/*****************************************************************************
 * unicode.c: Unicode <-> locale functions
 *****************************************************************************
 * Copyright (C) 2005-2006 the VideoLAN team
 * Copyright © 2005-2008 <NAME>
 *
 * Authors: <NAME> <rem # videolan.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <vlc_common.h>
#include <vlc_charset.h>

#include <assert.h>

#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <sys/types.h>
#ifdef UNDER_CE
#  include <tchar.h>
#endif
#include <errno.h>

#if defined (__APPLE__) || defined (HAVE_MAEMO)
/* Define this if the OS always use UTF-8 internally */
# define ASSUME_UTF8 1
#endif

#if defined (ASSUME_UTF8)
/* Cool */
#elif defined (WIN32) || defined (UNDER_CE)
# define USE_MB2MB 1
#elif defined (HAVE_ICONV)
# define USE_ICONV 1
#else
# error No UTF8 charset conversion implemented on this platform!
#endif

static char *locale_fast (const char *string, bool from)
{
    if( string == NULL )
        return NULL;

#if defined (USE_ICONV)
    vlc_iconv_t hd = vlc_iconv_open (from ? "UTF-8" : "",
                                     from ? "" : "UTF-8");
    if (hd == (vlc_iconv_t)(-1))
        return NULL; /* Uho! */

    const char *iptr = string;
    size_t inb = strlen (string);
    size_t outb = inb * 6 + 1;
    char output[outb], *optr = output;

    while (vlc_iconv (hd, &iptr, &inb, &optr, &outb) == (size_t)(-1))
    {
        *optr++ = '?';
        outb--;
        iptr++;
        inb--;
        vlc_iconv (hd, NULL, NULL, NULL, NULL); /* reset */
    }
    *optr = '\0';
    vlc_iconv_close (hd);

    assert (inb == 0);
    assert (*iptr == '\0');
    assert (*optr == '\0');
    assert (strlen (output) == (size_t)(optr - output));
    return strdup (output);
#elif defined (USE_MB2MB)
    char *out;
    int len;

    len = 1 + MultiByteToWideChar (from ? CP_ACP : CP_UTF8,
                                   0, string, -1, NULL, 0);
    wchar_t *wide = malloc (len * sizeof (wchar_t));
    if (wide == NULL)
        return NULL;

    MultiByteToWideChar (from ? CP_ACP : CP_UTF8, 0, string, -1, wide, len);
    len = 1 + WideCharToMultiByte (from ? CP_UTF8 : CP_ACP, 0, wide, -1,
                                   NULL, 0, NULL, NULL);
    out = malloc (len);
    if (out != NULL)
        WideCharToMultiByte (from ? CP_UTF8 : CP_ACP, 0, wide, -1, out, len,
                             NULL, NULL);
    free (wide);
    return out;
#else
    (void)from;
    return (char *)string;
#endif
}


static inline char *locale_dup (const char *string, bool from)
{
    assert( string );

#if defined (USE_ICONV)
    return locale_fast (string, from);
#elif defined (USE_MB2MB)
    return locale_fast (string, from);
#else
    (void)from;
    return strdup (string);
#endif
}

/**
 * Releases (if needed) a localized or uniformized string.
 * @param str non-NULL return value from FromLocale() or ToLocale().
 */
void LocaleFree (const char *str)
{
#if defined (USE_ICONV)
    free ((char *)str);
#elif defined (USE_MB2MB)
    free ((char *)str);
#else
    (void)str;
#endif
}


/**
 * Converts a string from the system locale character encoding to UTF-8.
 *
 * @param locale nul-terminated string to convert
 *
 * @return a nul-terminated UTF-8 string, or NULL in case of error.
 * To avoid memory leak, you have to pass the result to LocaleFree()
 * when it is no longer needed.
 */
char *FromLocale (const char *locale)
{
    return locale_fast (locale, true);
}

/**
 * converts a string from the system locale character encoding to utf-8,
{'fraction_non_alphanumeric': 0.19276136707329367, 'fraction_numerical': 0.01512249218671237, 'mean_word_length': 3.198053322048244, 'pattern_counts': {'":': 0, '<': 30, '<?xml version=': 0, '>': 30, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 8, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '1831007', 'n_tokens_mistral': 3261, 'n_tokens_neox': 3062, 'n_words': 1072}