/*
 * Utility routines
 *
 * Copyright 1998 Bertho A. Stultiens
 *
 */

#include "config.h"

#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <assert.h>
#include <ctype.h>

#include "wine/unicode.h"
#include "wrc.h"
#include "utils.h"
#include "parser.h"
#include "preproc.h"


/*
 * Ease debugging on OS/2.
 */
#if defined(__DEBUG_ALLOC__) && defined(__IBMC__)
#undef malloc
#define malloc(a)       _debug_malloc(a, pszFile, iLine)
#undef realloc
#define realloc(a,b)    _debug_realloc(a, b, pszFile, iLine)
#endif


/* #define WANT_NEAR_INDICATION */

static const union cptable *current_codepage;

#ifdef WANT_NEAR_INDICATION
void make_print(char *str)
{
    while(*str)
    {
        if(!isprint(*str))
            *str = ' ';
        str++;
    }
}
#endif

static void generic_msg(const char *s, const char *t, const char *n, va_list ap)
{
    fprintf(stderr, "%s:%d:%d: %s: ", input_name ? input_name : "stdin", line_number, char_number, t);
    vfprintf(stderr, s, ap);
#ifdef WANT_NEAR_INDICATION
    {
        char *cpy;
        if(n)
        {
            cpy = xstrdup(n);
            make_print(cpy);
            fprintf(stderr, " near '%s'", cpy);
            free(cpy);
        }
    }
#endif
    fprintf(stderr, "\n");
}


int yyerror(const char *s, ...)
{
    va_list ap;
    va_start(ap, s);
    generic_msg(s, "Error", yytext, ap);
    va_end(ap);
    exit(1);
    return 1;
}

int yywarning(const char *s, ...)
{
    va_list ap;
    va_start(ap, s);
    generic_msg(s, "Warning", yytext, ap);
    va_end(ap);
    return 0;
}

int pperror(const char *s, ...)
{
    va_list ap;
    va_start(ap, s);
    generic_msg(s, "Error", pptext, ap);
    va_end(ap);
    exit(1);
    return 1;
}

int ppwarning(const char *s, ...)
{
    va_list ap;
    va_start(ap, s);
    generic_msg(s, "Warning", pptext, ap);
    va_end(ap);
    return 0;
}


void internal_error(const char *file, int line, const char *s, ...)
{
    va_list ap;
    va_start(ap, s);
    fprintf(stderr, "Internal error (please report) %s %d: ", file, line);
    vfprintf(stderr, s, ap);
    fprintf(stderr, "\n");
    va_end(ap);
    exit(3);
}

void error(const char *s, ...)
{
    va_list ap;
    va_start(ap, s);
    fprintf(stderr, "Error: ");
    vfprintf(stderr, s, ap);
    fprintf(stderr, "\n");
    va_end(ap);
    exit(2);
}

void warning(const char *s, ...)
{
    va_list ap;
    va_start(ap, s);
    fprintf(stderr, "Warning: ");
    vfprintf(stderr, s, ap);
    fprintf(stderr, "\n");
    va_end(ap);
}

void chat(const char *s, ...)
{
    if(debuglevel & DEBUGLEVEL_CHAT)
    {
        va_list ap;
        va_start(ap, s);
        fprintf(stderr, "FYI: ");
        vfprintf(stderr, s, ap);
        fprintf(stderr, "\n");
        va_end(ap);
    }
}

char *dup_basename(const char *name, const char *ext)
{
    int namelen;
    int extlen = strlen(ext);
    char *base;
    char *slash;

    if(!name)
        name = "wrc.tab";

    slash = strrchr(name, '/');
    if (slash)
        name = slash + 1;

    namelen = strlen(name);

    /* +4 for later extension and +1 for '\0' */
    base = (char *)xmalloc(namelen +4 +1);
    strcpy(base, name);
    if(!strcasecmp(name + namelen-extlen, ext))
    {
        base[namelen - extlen] = '\0';
    }
    return base;
}

#if defined(__DEBUG_ALLOC__) && defined(__IBMC__)
void *_xmalloc(size_t size, char *pszFile, int iLine)
#else
void *xmalloc(size_t size)
#endif
{
    void *res;

    assert(size > 0);
    res = malloc(size);
    if(res == NULL)
    {
    error("Virtual memory exhausted.\n");
    }
    /*
     * We set it to 0.
     * This is *paramount* because we depend on it
     * just about everywhere in the rest of the code.
     */
    memset(res, 0, size);
    return res;
}



#if defined(__DEBUG_ALLOC__) && defined(__IBMC__)
void *_xrealloc(void *p, size_t size, char *pszFile, int iLine)
#else
void *xrealloc(void *p, size_t size)
#endif
{
    void *res;

    assert(size > 0);
    res = realloc(p, size);
    if(res == NULL)
    {
    error("Virtual memory exhausted.\n");
    }
    return res;
}

#if defined(__DEBUG_ALLOC__) && defined(__IBMC__)
char *_xstrdup(const char *str, char *pszFile, int iLine)
#else
char *xstrdup(const char *str)
#endif
{
    char *s;

    assert(str != NULL);
    #if defined(__DEBUG_ALLOC__) && defined(__IBMC__)
        s = (char *)_xmalloc(strlen(str)+1, pszFile, iLine);
    #else
        s = (char *)xmalloc(strlen(str)+1);
    #endif
    return strcpy(s, str);
}

char *xtempnam(const char *dir, const char *prefix)
{
#ifdef __EMX__
    // fullpath() called internally by tempnam() is broken and changes CWD (see
    // http://svn.netlabs.org/odin32/ticket/63 for details). Preserve it.
    int drv = _getdrive();
#endif
    char *res = tempnam(dir, prefix);
#ifdef __EMX__
    _chdrive(drv);
#endif
    if (!res)
    {
        fprintf (stderr, "Virtual memory exhausted.\n");
        exit (1);
    }
    return res;
}

short *dupcstr2wstr(const char *str)
{
    int len;
    WCHAR *ws;

    if (!current_codepage) set_language( LANG_NEUTRAL, SUBLANG_NEUTRAL );
    len = cp_mbstowcs( current_codepage, 0, str, strlen(str), NULL, 0 );
    ws = xmalloc( sizeof(WCHAR) * (len + 1) );
    len = cp_mbstowcs( current_codepage, 0, str, strlen(str), ws, len );
    ws[len] = 0;
    return ws;
}

char *dupwstr2cstr(const short *str)
{
    int len;
    char *cs;

    if (!current_codepage) set_language( LANG_NEUTRAL, SUBLANG_NEUTRAL );
    len = cp_wcstombs( current_codepage, 0, str, strlenW(str), NULL, 0, NULL, NULL );
    cs = xmalloc( len + 1 );
    len = cp_wcstombs( current_codepage, 0, str, strlenW(str),  cs, len, NULL, NULL );
    cs[len] = 0;
    return cs;
}

/*
 *****************************************************************************
 * Function : compare_name_id
 * Syntax   : int compare_name_id(name_id_t *n1, name_id_t *n2)
 * Input    :
 * Output   :
 * Description  :
 * Remarks  :
 *****************************************************************************
*/
int compare_name_id(name_id_t *n1, name_id_t *n2)
{
    if(n1->type == name_ord && n2->type == name_ord)
    {
        return n1->name.i_name - n2->name.i_name;
    }
    else if(n1->type == name_str && n2->type == name_str)
    {
        if(n1->name.s_name->type == str_char
        && n2->name.s_name->type == str_char)
        {
            return strcasecmp(n1->name.s_name->str.cstr, n2->name.s_name->str.cstr);
        }
        else if(n1->name.s_name->type == str_unicode
        && n2->name.s_name->type == str_unicode)
        {
            return strcmpiW(n1->name.s_name->str.wstr, n2->name.s_name->str.wstr);
        }
        else
        {
            internal_error(__FILE__, __LINE__, "Can't yet compare strings of mixed type");
        }
    }
    else if(n1->type == name_ord && n2->type == name_str)
        return 1;
    else if(n1->type == name_str && n2->type == name_ord)
        return -1;
    else
        internal_error(__FILE__, __LINE__, "Comparing name-ids with unknown types (%d, %d)",
                n1->type, n2->type);

    return 0; /* Keep the compiler happy */
}

string_t *convert_string(const string_t *str, enum str_e type)
{
        string_t *ret = xmalloc(sizeof(*ret));

        if((str->type == str_char) && (type == str_unicode))
    {
        ret->str.wstr = dupcstr2wstr(str->str.cstr);
        ret->type     = str_unicode;
        ret->size     = strlenW(ret->str.wstr);
    }
    else if((str->type == str_unicode) && (type == str_char))
    {
            ret->str.cstr = dupwstr2cstr(str->str.wstr);
            ret->type     = str_char;
            ret->size     = strlen(ret->str.cstr);
    }
    else if(str->type == str_unicode)
        {
            ret->type     = str_unicode;
        ret->size     = strlenW(str->str.wstr);
        ret->str.wstr = xmalloc(sizeof(WCHAR)*(ret->size+1));
        strcpyW(ret->str.wstr, str->str.wstr);
    }
    else /* str->type == str_char */
        {
            ret->type     = str_char;
        ret->size     = strlen(str->str.cstr);
        ret->str.cstr = xmalloc( ret->size + 1 );
        strcpy(ret->str.cstr, str->str.cstr);
        }
    return ret;
}


struct lang2cp
{
    unsigned short lang;
    unsigned short sublang;
    unsigned int   cp;
} lang2cp_t;

/* language to codepage conversion table */
/* specific sublanguages need only be specified if their codepage */
/* differs from the default (SUBLANG_NEUTRAL) */
static const struct lang2cp lang2cps[] =
{
    { LANG_AFRIKAANS,      SUBLANG_NEUTRAL,              1252 },
    { LANG_ALBANIAN,       SUBLANG_NEUTRAL,              1250 },
    { LANG_ARABIC,         SUBLANG_NEUTRAL,              1256 },
    { LANG_ARMENIAN,       SUBLANG_NEUTRAL,              0    },
    { LANG_AZERI,          SUBLANG_NEUTRAL,              1254 },
    { LANG_AZERI,          SUBLANG_AZERI_CYRILLIC,       1251 },
    { LANG_BASQUE,         SUBLANG_NEUTRAL,              1252 },
    { LANG_BELARUSIAN,     SUBLANG_NEUTRAL,              1251 },
#ifdef LANG_BRETON
    { LANG_BRETON,         SUBLANG_NEUTRAL,              1252 },
#endif /* LANG_BRETON */
    { LANG_BULGARIAN,      SUBLANG_NEUTRAL,              1251 },
    { LANG_BELARUSIAN,     SUBLANG_NEUTRAL,              1251 }, /* ?? */
    { LANG_CATALAN,        SUBLANG_NEUTRAL,              1252 },
    { LANG_CHINESE,        SUBLANG_NEUTRAL,              936  },
    { LANG_CHINESE,        SUBLANG_CHINESE_SINGAPORE,    936  },
    { LANG_CHINESE,        SUBLANG_CHINESE_SIMPLIFIED,   936  },
#ifdef LANG_CORNISH
    { LANG_CORNISH,        SUBLANG_NEUTRAL,              1252 },
#endif /* LANG_CORNISH */
    { LANG_CROATIAN,       SUBLANG_NEUTRAL,              1250 },
    { LANG_CZECH,          SUBLANG_NEUTRAL,              1250 },
    { LANG_DANISH,         SUBLANG_NEUTRAL,              1252 },
    { LANG_DIVEHI,         SUBLANG_NEUTRAL,              0    },
    { LANG_DUTCH,          SUBLANG_NEUTRAL,              1252 },
    { LANG_ENGLISH,        SUBLANG_NEUTRAL,              1252 },
#ifdef LANG_ESPERANTO
    { LANG_ESPERANTO,      SUBLANG_NEUTRAL,              1252 },
#endif /* LANG_ESPERANTO */
    { LANG_ESTONIAN,       SUBLANG_NEUTRAL,              1257 },
    { LANG_FAEROESE,       SUBLANG_NEUTRAL,              1252 },
    { LANG_FARSI,          SUBLANG_NEUTRAL,              1256 },
    { LANG_FINNISH,        SUBLANG_NEUTRAL,              1252 },
    { LANG_FRENCH,         SUBLANG_NEUTRAL,              1252 },
#ifdef LANG_GAELIC
    { LANG_GAELIC,         SUBLANG_NEUTRAL,              1252 },
#endif /* LANG_GAELIC */
    { LANG_GALICIAN,       SUBLANG_NEUTRAL,              1252 },
    { LANG_GEORGIAN,       SUBLANG_NEUTRAL,              0    },
    { LANG_GERMAN,         SUBLANG_NEUTRAL,              1252 },
    { LANG_GREEK,          SUBLANG_NEUTRAL,              1253 },
    { LANG_GUJARATI,       SUBLANG_NEUTRAL,              0    },
    { LANG_HEBREW,         SUBLANG_NEUTRAL,              1255 },
    { LANG_HINDI,          SUBLANG_NEUTRAL,              0    },
    { LANG_HUNGARIAN,      SUBLANG_NEUTRAL,              1250 },
    { LANG_ICELANDIC,      SUBLANG_NEUTRAL,              1252 },
    { LANG_INDONESIAN,     SUBLANG_NEUTRAL,              1252 },
    { LANG_ITALIAN,        SUBLANG_NEUTRAL,              1252 },
    { LANG_JAPANESE,       SUBLANG_NEUTRAL,              932  },
    { LANG_KANNADA,        SUBLANG_NEUTRAL,              0    },
    { LANG_KAZAK,          SUBLANG_NEUTRAL,              1251 },
    { LANG_KONKANI,        SUBLANG_NEUTRAL,              0    },
    { LANG_KOREAN,         SUBLANG_NEUTRAL,              949  },
    { LANG_KYRGYZ,         SUBLANG_NEUTRAL,              1251 },
    { LANG_LATVIAN,        SUBLANG_NEUTRAL,              1257 },
    { LANG_LITHUANIAN,     SUBLANG_NEUTRAL,              1257 },
    { LANG_MACEDONIAN,     SUBLANG_NEUTRAL,              1251 },
    { LANG_MALAY,          SUBLANG_NEUTRAL,              1252 },
    { LANG_MARATHI,        SUBLANG_NEUTRAL,              0    },
    { LANG_MONGOLIAN,      SUBLANG_NEUTRAL,              1251 },
    { LANG_NEUTRAL,        SUBLANG_NEUTRAL,              1252 },
    { LANG_NORWEGIAN,      SUBLANG_NEUTRAL,              1252 },
    { LANG_POLISH,         SUBLANG_NEUTRAL,              1250 },
    { LANG_PORTUGUESE,     SUBLANG_NEUTRAL,              1252 },
    { LANG_PUNJABI,        SUBLANG_NEUTRAL,              0    },
    { LANG_ROMANIAN,       SUBLANG_NEUTRAL,              1250 },
    { LANG_RUSSIAN,        SUBLANG_NEUTRAL,              1251 },
    { LANG_SANSKRIT,       SUBLANG_NEUTRAL,              0    },
    { LANG_SERBIAN,        SUBLANG_NEUTRAL,              1250 },
    { LANG_SERBIAN,        SUBLANG_SERBIAN_CYRILLIC,     1251 },
    { LANG_SLOVAK,         SUBLANG_NEUTRAL,              1250 },
    { LANG_SLOVENIAN,      SUBLANG_NEUTRAL,              1250 },
    { LANG_SPANISH,        SUBLANG_NEUTRAL,              1252 },
    { LANG_SWAHILI,        SUBLANG_NEUTRAL,              1252 },
    { LANG_SWEDISH,        SUBLANG_NEUTRAL,              1252 },
    { LANG_SYRIAC,         SUBLANG_NEUTRAL,              0    },
    { LANG_TAMIL,          SUBLANG_NEUTRAL,              0    },
    { LANG_TATAR,          SUBLANG_NEUTRAL,              1251 },
    { LANG_TELUGU,         SUBLANG_NEUTRAL,              0    },
    { LANG_THAI,           SUBLANG_NEUTRAL,              874  },
    { LANG_TURKISH,        SUBLANG_NEUTRAL,              1254 },
    { LANG_UKRAINIAN,      SUBLANG_NEUTRAL,              1251 },
    { LANG_URDU,           SUBLANG_NEUTRAL,              1256 },
    { LANG_UZBEK,          SUBLANG_NEUTRAL,              1254 },
    { LANG_UZBEK,          SUBLANG_UZBEK_CYRILLIC,       1251 },
    { LANG_VIETNAMESE,     SUBLANG_NEUTRAL,              1258 }
#ifdef LANG_WALON
    , { LANG_WALON,          SUBLANG_NEUTRAL,              1252 }
#endif /* LANG_WALON */
#ifdef LANG_WELSH
    , { LANG_WELSH,          SUBLANG_NEUTRAL,              1252 }
#endif /* LANG_WELSH */
};

void set_language( unsigned short lang, unsigned short sublang )
{
    unsigned int i;
    unsigned int cp = 0, defcp = 0;

    for (i = 0; i < sizeof(lang2cps)/sizeof(lang2cps[0]); i++)
    {
        if (lang2cps[i].lang != lang) continue;
        if (lang2cps[i].sublang == sublang)
        {
            cp = lang2cps[i].cp;
            break;
        }
        if (lang2cps[i].sublang == SUBLANG_NEUTRAL) defcp = lang2cps[i].cp;
    }

    if (!cp) cp = defcp;
    if (!cp)
        error( "No codepage value for language %04x", MAKELANGID(lang,sublang) );
    if (!(current_codepage = cp_get_table( cp )))
        error( "Bad codepage %d for language %04x", cp, MAKELANGID(lang,sublang) );
}

#if defined(__WIN32OS2__)
INT WINAPI strcasecmp( LPCSTR p1, LPCSTR p2 )
{
    return stricmp( p1, p2 );
}
#if defined(__IBMC__)
INT WINAPI lstrcmpiA(LPCSTR p1, LPCSTR p2)
{
    return stricmp( p1, p2 );
}

#endif
#endif