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#include <newlib.h>
#include <stdlib.h>
#include <locale.h>
#include "mbctype.h"
#include <wchar.h>
#include <string.h>
 
#ifdef _MB_CAPABLE
typedef enum { ESCAPE, DOLLAR, BRACKET, AT, B, J,
               NUL, JIS_CHAR, OTHER, JIS_C_NUM } JIS_CHAR_TYPE;
typedef enum { ASCII, JIS, A_ESC, A_ESC_DL, JIS_1, J_ESC, J_ESC_BR,
               INV, JIS_S_NUM } JIS_STATE;
typedef enum { COPY_A, COPY_J1, COPY_J2, MAKE_A, NOOP, EMPTY, ERROR } JIS_ACTION;
 
/**************************************************************************************
 * state/action tables for processing JIS encoding
 * Where possible, switches to JIS are grouped with proceding JIS characters and switches
 * to ASCII are grouped with preceding JIS characters.  Thus, maximum returned length
 * is 2 (switch to JIS) + 2 (JIS characters) + 2 (switch back to ASCII) = 6.
 *************************************************************************************/
 
static JIS_STATE JIS_state_table[JIS_S_NUM][JIS_C_NUM] = {
/*              ESCAPE   DOLLAR    BRACKET   AT       B       J        NUL      JIS_CHAR  OTHER */
/* ASCII */   { A_ESC,   ASCII,    ASCII,    ASCII,   ASCII,  ASCII,   ASCII,   ASCII,    ASCII },
/* JIS */     { J_ESC,   JIS_1,    JIS_1,    JIS_1,   JIS_1,  JIS_1,   INV,     JIS_1,    INV },
/* A_ESC */   { ASCII,   A_ESC_DL, ASCII,    ASCII,   ASCII,  ASCII,   ASCII,   ASCII,    ASCII },
/* A_ESC_DL */{ ASCII,   ASCII,    ASCII,    JIS,     JIS,    ASCII,   ASCII,   ASCII,    ASCII },
/* JIS_1 */   { INV,     JIS,      JIS,      JIS,     JIS,    JIS,     INV,     JIS,      INV },
/* J_ESC */   { INV,     INV,      J_ESC_BR, INV,     INV,    INV,     INV,     INV,      INV },
/* J_ESC_BR */{ INV,     INV,      INV,      INV,     ASCII,  ASCII,   INV,     INV,      INV },
};
 
static JIS_ACTION JIS_action_table[JIS_S_NUM][JIS_C_NUM] = {
/*              ESCAPE   DOLLAR    BRACKET   AT       B        J        NUL      JIS_CHAR  OTHER */
/* ASCII */   { NOOP,    COPY_A,   COPY_A,   COPY_A,  COPY_A,  COPY_A,  EMPTY,   COPY_A,  COPY_A},
/* JIS */     { NOOP,    COPY_J1,  COPY_J1,  COPY_J1, COPY_J1, COPY_J1, ERROR,   COPY_J1, ERROR },
/* A_ESC */   { COPY_A,  NOOP,     COPY_A,   COPY_A,  COPY_A,  COPY_A,  COPY_A,  COPY_A,  COPY_A},
/* A_ESC_DL */{ COPY_A,  COPY_A,   COPY_A,   NOOP,    NOOP,    COPY_A,  COPY_A,  COPY_A,  COPY_A},
/* JIS_1 */   { ERROR,   COPY_J2,  COPY_J2,  COPY_J2, COPY_J2, COPY_J2, ERROR,   COPY_J2, ERROR },
/* J_ESC */   { ERROR,   ERROR,    NOOP,     ERROR,   ERROR,   ERROR,   ERROR,   ERROR,   ERROR },
/* J_ESC_BR */{ ERROR,   ERROR,    ERROR,    ERROR,   MAKE_A,  MAKE_A,  ERROR,   ERROR,   ERROR },
};
#endif /* _MB_CAPABLE */
 
/* we override the mbstate_t __count field for more complex encodings and use it store a state value */
#define __state __count
 
extern char __lc_ctype[12];
 
int
_DEFUN (_mbtowc_r, (r, pwc, s, n, state),
        struct _reent *r   _AND
        wchar_t       *pwc _AND
        const char    *s   _AND
        size_t         n   _AND
        mbstate_t      *state)
{
  wchar_t dummy;
  unsigned char *t = (unsigned char *)s;
 
  if (pwc == NULL)
    pwc = &dummy;
 
  if (s != NULL && n == 0)
    return -2;
 
#ifdef _MB_CAPABLE
  if (__lc_ctype == NULL ||
      (strlen (__lc_ctype) <= 1))
    { /* fall-through */ }
  else if (!strcmp (__lc_ctype, "C-UTF-8"))
    {
      int ch;
      int i = 0;
 
      if (s == NULL)
        return 0; /* UTF-8 character encodings are not state-dependent */
 
      if (state->__count == 0)
        ch = t[i++];
      else
        {
          ++n;
          ch = state->__value.__wchb[0];
        }
 
      if (ch == '\0')
        {
          *pwc = 0;
          state->__count = 0;
          return 0; /* s points to the null character */
        }
 
      if (ch >= 0x0 && ch <= 0x7f)
        {
          /* single-byte sequence */
          state->__count = 0;
          *pwc = ch;
          return 1;
        }
      else if (ch >= 0xc0 && ch <= 0xdf)
        {
          /* two-byte sequence */
          state->__value.__wchb[0] = ch;
          state->__count = 1;
          if (n < 2)
            return -2;
          ch = t[i++];
          if (ch < 0x80 || ch > 0xbf)
            return -1;
          if (state->__value.__wchb[0] < 0xc2)
            /* overlong UTF-8 sequence */
            return -1;
          state->__count = 0;
          *pwc = (wchar_t)((state->__value.__wchb[0] & 0x1f) << 6)
            |    (wchar_t)(ch & 0x3f);
          return i;
        }
      else if (ch >= 0xe0 && ch <= 0xef)
        {
          /* three-byte sequence */
          wchar_t tmp;
          state->__value.__wchb[0] = ch;
          if (state->__count == 0)
            state->__count = 1;
          else
            ++n;
          if (n < 2)
            return -2;
          ch = (state->__count == 1) ? t[i++] : state->__value.__wchb[1];
          if (state->__value.__wchb[0] == 0xe0 && ch < 0xa0)
            /* overlong UTF-8 sequence */
            return -1;
          if (ch < 0x80 || ch > 0xbf)
            return -1;
          state->__value.__wchb[1] = ch;
          state->__count = 2;
          if (n < 3)
            return -2;
          ch = t[i++];
          if (ch < 0x80 || ch > 0xbf)
            return -1;
          state->__count = 0;
          tmp = (wchar_t)((state->__value.__wchb[0] & 0x0f) << 12)
            |    (wchar_t)((state->__value.__wchb[1] & 0x3f) << 6)
            |     (wchar_t)(ch & 0x3f);
 
          if (tmp >= 0xd800 && tmp <= 0xdfff)
            return -1;
          *pwc = tmp;
          return i;
        }
      else if (ch >= 0xf0 && ch <= 0xf7)
        {
          /* four-byte sequence */
          if (sizeof(wchar_t) < 4)
            return -1; /* we can't store such a value */
          state->__value.__wchb[0] = ch;
          if (state->__count == 0)
            state->__count = 1;
          else
            ++n;
          if (n < 2)
            return -2;
          ch = (state->__count == 1) ? t[i++] : state->__value.__wchb[1];
          if (state->__value.__wchb[0] == 0xf0 && ch < 0x90)
            /* overlong UTF-8 sequence */
            return -1;
          if (ch < 0x80 || ch > 0xbf)
            return -1;
          state->__value.__wchb[1] = ch;
          if (state->__count == 1)
            state->__count = 2;
          else
            ++n;
          if (n < 3)
            return -2;
          ch = (state->__count == 2) ? t[i++] : state->__value.__wchb[2];
          if (ch < 0x80 || ch > 0xbf)
            return -1;
          state->__value.__wchb[2] = ch;
          state->__count = 3;
          if (n < 4)
            return -2;
          ch = t[i++];
          if (ch < 0x80 || ch > 0xbf)
            return -1;
          *pwc = (wchar_t)((state->__value.__wchb[0] & 0x07) << 18)
            |    (wchar_t)((state->__value.__wchb[1] & 0x3f) << 12)
            |    (wchar_t)((state->__value.__wchb[2] & 0x3f) << 6)
            |    (wchar_t)(ch & 0x3f);
 
          state->__count = 0;
          return i;
        }
      else if (ch >= 0xf8 && ch <= 0xfb)
        {
          /* five-byte sequence */
          if (sizeof(wchar_t) < 4)
            return -1; /* we can't store such a value */
          state->__value.__wchb[0] = ch;
          if (state->__count == 0)
            state->__count = 1;
          else
            ++n;
          if (n < 2)
            return -2;
          ch = (state->__count == 1) ? t[i++] : state->__value.__wchb[1];
          if (state->__value.__wchb[0] == 0xf8 && ch < 0x88)
            /* overlong UTF-8 sequence */
            return -1;
          if (ch < 0x80 || ch > 0xbf)
            return -1;
          state->__value.__wchb[1] = ch;
          if (state->__count == 1)
            state->__count = 2;
          else
            ++n;
          if (n < 3)
            return -2;
          ch = (state->__count == 2) ? t[i++] : state->__value.__wchb[2];
          if (ch < 0x80 || ch > 0xbf)
            return -1;
          state->__value.__wchb[2] = ch;
          if (state->__count == 2)
            state->__count = 3;
          else
            ++n;
          if (n < 4)
            return -2;
          ch = (state->__count == 3) ? t[i++] : state->__value.__wchb[3];
          if (ch < 0x80 || ch > 0xbf)
            return -1;
          state->__value.__wchb[3] = ch;
          state->__count = 4;
          if (n < 5)
            return -2;
          ch = t[i++];
          *pwc = (wchar_t)((state->__value.__wchb[0] & 0x03) << 24)
            |    (wchar_t)((state->__value.__wchb[1] & 0x3f) << 18)
            |    (wchar_t)((state->__value.__wchb[2] & 0x3f) << 12)
            |    (wchar_t)((state->__value.__wchb[3] & 0x3f) << 6)
            |    (wchar_t)(ch & 0x3f);
 
          state->__count = 0;
          return i;
        }
      else if (ch >= 0xfc && ch <= 0xfd)
        {
          /* six-byte sequence */
          int ch2;
          if (sizeof(wchar_t) < 4)
            return -1; /* we can't store such a value */
          state->__value.__wchb[0] = ch;
          if (state->__count == 0)
            state->__count = 1;
          else
            ++n;
          if (n < 2)
            return -2;
          ch = (state->__count == 1) ? t[i++] : state->__value.__wchb[1];
          if (state->__value.__wchb[0] == 0xfc && ch < 0x84)
            /* overlong UTF-8 sequence */
            return -1;
          if (ch < 0x80 || ch > 0xbf)
            return -1;
          state->__value.__wchb[1] = ch;
          if (state->__count == 1)
            state->__count = 2;
          else
            ++n;
          if (n < 3)
            return -2;
          ch = (state->__count == 2) ? t[i++] : state->__value.__wchb[2];
          if (ch < 0x80 || ch > 0xbf)
            return -1;
          state->__value.__wchb[2] = ch;
          if (state->__count == 2)
            state->__count = 3;
          else
            ++n;
          if (n < 4)
            return -2;
          ch = (state->__count == 3) ? t[i++] : state->__value.__wchb[3];
          if (ch < 0x80 || ch > 0xbf)
            return -1;
          state->__value.__wchb[3] = ch;
          if (state->__count == 3)
            state->__count = 4;
          else
            ++n;
          if (n < 5)
            return -2;
          if (n == 5)
            return -1; /* at this point we can't save enough to restart */
          ch = t[i++];
          if (ch < 0x80 || ch > 0xbf)
            return -1;
          ch2 = t[i++];
          *pwc = (wchar_t)((state->__value.__wchb[0] & 0x01) << 30)
            |    (wchar_t)((state->__value.__wchb[1] & 0x3f) << 24)
            |    (wchar_t)((state->__value.__wchb[2] & 0x3f) << 18)
            |    (wchar_t)((state->__value.__wchb[3] & 0x3f) << 12)
            |    (wchar_t)((ch & 0x3f) << 6)
            |    (wchar_t)(ch2 & 0x3f);
 
          state->__count = 0;
          return i;
        }
      else
        return -1;
    }
  else if (!strcmp (__lc_ctype, "C-SJIS"))
    {
      int ch;
      int i = 0;
      if (s == NULL)
        return 0;  /* not state-dependent */
      ch = t[i++];
      if (state->__count == 0)
        {
          if (_issjis1 (ch))
            {
              state->__value.__wchb[0] = ch;
              state->__count = 1;
              if (n <= 1)
                return -2;
              ch = t[i++];
            }
        }
      if (state->__count == 1)
        {
          if (_issjis2 (ch))
            {
              *pwc = (((wchar_t)state->__value.__wchb[0]) << 8) + (wchar_t)ch;
              state->__count = 0;
              return i;
            }
          else
            return -1;
        }
    }
  else if (!strcmp (__lc_ctype, "C-EUCJP"))
    {
      int ch;
      int i = 0;
      if (s == NULL)
        return 0;  /* not state-dependent */
      ch = t[i++];
      if (state->__count == 0)
        {
          if (_iseucjp (ch))
            {
              state->__value.__wchb[0] = ch;
              state->__count = 1;
              if (n <= 1)
                return -2;
              ch = t[i++];
            }
        }
      if (state->__count == 1)
        {
          if (_iseucjp (ch))
            {
              *pwc = (((wchar_t)state->__value.__wchb[0]) << 8) + (wchar_t)ch;
              state->__count = 0;
              return i;
            }
          else
            return -1;
        }
    }
  else if (!strcmp (__lc_ctype, "C-JIS"))
    {
      JIS_STATE curr_state;
      JIS_ACTION action;
      JIS_CHAR_TYPE ch;
      unsigned char *ptr;
      unsigned int i;
      int curr_ch;
 
      if (s == NULL)
        {
          state->__state = ASCII;
          return 1;  /* state-dependent */
        }
 
      curr_state = state->__state;
      ptr = t;
 
      for (i = 0; i < n; ++i)
        {
          curr_ch = t[i];
          switch (curr_ch)
            {
            case ESC_CHAR:
              ch = ESCAPE;
              break;
            case '$':
              ch = DOLLAR;
              break;
            case '@':
              ch = AT;
              break;
            case '(':
              ch = BRACKET;
              break;
            case 'B':
              ch = B;
              break;
            case 'J':
              ch = J;
              break;
            case '\0':
              ch = NUL;
              break;
            default:
              if (_isjis (curr_ch))
                ch = JIS_CHAR;
              else
                ch = OTHER;
            }
 
          action = JIS_action_table[curr_state][ch];
          curr_state = JIS_state_table[curr_state][ch];
 
          switch (action)
            {
            case NOOP:
              break;
            case EMPTY:
              state->__state = ASCII;
              *pwc = (wchar_t)0;
              return 0;
            case COPY_A:
              state->__state = ASCII;
              *pwc = (wchar_t)*ptr;
              return (i + 1);
            case COPY_J1:
              state->__value.__wchb[0] = t[i];
              break;
            case COPY_J2:
              state->__state = JIS;
              *pwc = (((wchar_t)state->__value.__wchb[0]) << 8) + (wchar_t)(t[i]);
              return (i + 1);
            case MAKE_A:
              ptr = (char *)(t + i + 1);
              break;
            case ERROR:
            default:
              return -1;
            }
 
        }
 
      state->__state = curr_state;
      return -2;  /* n < bytes needed */
    }
#endif /* _MB_CAPABLE */               
 
  /* otherwise this must be the "C" locale or unknown locale */
  if (s == NULL)
    return 0;  /* not state-dependent */
 
  *pwc = (wchar_t)*t;
 
  if (*t == '\0')
    return 0;
 
  return 1;
}

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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [newlib/] [libc/] [stdlib/] [mbtowc_r.c] - Blame information for rev 179

Line No.	Rev	Author	Line
1	148	jeremybenn	`#include <newlib.h>`
2			`#include <stdlib.h>`
3			`#include <locale.h>`
4			`#include "mbctype.h"`
5			`#include <wchar.h>`
6			`#include <string.h>`
7
8			`#ifdef _MB_CAPABLE`
9			`typedef enum { ESCAPE, DOLLAR, BRACKET, AT, B, J,`
10			`NUL, JIS_CHAR, OTHER, JIS_C_NUM } JIS_CHAR_TYPE;`
11			`typedef enum { ASCII, JIS, A_ESC, A_ESC_DL, JIS_1, J_ESC, J_ESC_BR,`
12			`INV, JIS_S_NUM } JIS_STATE;`
13			`typedef enum { COPY_A, COPY_J1, COPY_J2, MAKE_A, NOOP, EMPTY, ERROR } JIS_ACTION;`
14
15			`/**************************************************************************************`
16			`* state/action tables for processing JIS encoding`
17			`* Where possible, switches to JIS are grouped with proceding JIS characters and switches`
18			`* to ASCII are grouped with preceding JIS characters. Thus, maximum returned length`
19			`* is 2 (switch to JIS) + 2 (JIS characters) + 2 (switch back to ASCII) = 6.`
20			`*************************************************************************************/`
21
22			`static JIS_STATE JIS_state_table[JIS_S_NUM][JIS_C_NUM] = {`
23			`/* ESCAPE DOLLAR BRACKET AT B J NUL JIS_CHAR OTHER */`
24			`/* ASCII */ { A_ESC, ASCII, ASCII, ASCII, ASCII, ASCII, ASCII, ASCII, ASCII },`
25			`/* JIS */ { J_ESC, JIS_1, JIS_1, JIS_1, JIS_1, JIS_1, INV, JIS_1, INV },`
26			`/* A_ESC */ { ASCII, A_ESC_DL, ASCII, ASCII, ASCII, ASCII, ASCII, ASCII, ASCII },`
27			`/* A_ESC_DL */{ ASCII, ASCII, ASCII, JIS, JIS, ASCII, ASCII, ASCII, ASCII },`
28			`/* JIS_1 */ { INV, JIS, JIS, JIS, JIS, JIS, INV, JIS, INV },`
29			`/* J_ESC */ { INV, INV, J_ESC_BR, INV, INV, INV, INV, INV, INV },`
30			`/* J_ESC_BR */{ INV, INV, INV, INV, ASCII, ASCII, INV, INV, INV },`
31			`};`
32
33			`static JIS_ACTION JIS_action_table[JIS_S_NUM][JIS_C_NUM] = {`
34			`/* ESCAPE DOLLAR BRACKET AT B J NUL JIS_CHAR OTHER */`
35			`/* ASCII */ { NOOP, COPY_A, COPY_A, COPY_A, COPY_A, COPY_A, EMPTY, COPY_A, COPY_A},`
36			`/* JIS */ { NOOP, COPY_J1, COPY_J1, COPY_J1, COPY_J1, COPY_J1, ERROR, COPY_J1, ERROR },`
37			`/* A_ESC */ { COPY_A, NOOP, COPY_A, COPY_A, COPY_A, COPY_A, COPY_A, COPY_A, COPY_A},`
38			`/* A_ESC_DL */{ COPY_A, COPY_A, COPY_A, NOOP, NOOP, COPY_A, COPY_A, COPY_A, COPY_A},`
39			`/* JIS_1 */ { ERROR, COPY_J2, COPY_J2, COPY_J2, COPY_J2, COPY_J2, ERROR, COPY_J2, ERROR },`
40			`/* J_ESC */ { ERROR, ERROR, NOOP, ERROR, ERROR, ERROR, ERROR, ERROR, ERROR },`
41			`/* J_ESC_BR */{ ERROR, ERROR, ERROR, ERROR, MAKE_A, MAKE_A, ERROR, ERROR, ERROR },`
42			`};`
43			`#endif /* _MB_CAPABLE */`
44
45			`/* we override the mbstate_t __count field for more complex encodings and use it store a state value */`
46			`#define __state __count`
47
48			`extern char __lc_ctype[12];`
49
50			`int`
51			`_DEFUN (_mbtowc_r, (r, pwc, s, n, state),`
52			`struct _reent *r _AND`
53			`wchar_t *pwc _AND`
54			`const char *s _AND`
55			`size_t n _AND`
56			`mbstate_t *state)`
57			`{`
58			`wchar_t dummy;`
59			`unsigned char t = (unsigned char )s;`
60
61			`if (pwc == NULL)`
62			`pwc = &dummy;`
63
64			`if (s != NULL && n == 0)`
65			`return -2;`
66
67			`#ifdef _MB_CAPABLE`
68			`if (__lc_ctype == NULL \|\|`
69			`(strlen (__lc_ctype) <= 1))`
70			`{ /* fall-through */ }`
71			`else if (!strcmp (__lc_ctype, "C-UTF-8"))`
72			`{`
73			`int ch;`
74			`int i = 0;`
75
76			`if (s == NULL)`
77			`return 0; /* UTF-8 character encodings are not state-dependent */`
78
79			`if (state->__count == 0)`
80			`ch = t[i++];`
81			`else`
82			`{`
83			`++n;`
84			`ch = state->__value.__wchb[0];`
85			`}`
86
87			`if (ch == '\0')`
88			`{`
89			`*pwc = 0;`
90			`state->__count = 0;`
91			`return 0; /* s points to the null character */`
92			`}`
93
94			`if (ch >= 0x0 && ch <= 0x7f)`
95			`{`
96			`/* single-byte sequence */`
97			`state->__count = 0;`
98			`*pwc = ch;`
99			`return 1;`
100			`}`
101			`else if (ch >= 0xc0 && ch <= 0xdf)`
102			`{`
103			`/* two-byte sequence */`
104			`state->__value.__wchb[0] = ch;`
105			`state->__count = 1;`
106			`if (n < 2)`
107			`return -2;`
108			`ch = t[i++];`
109			`if (ch < 0x80 \|\| ch > 0xbf)`
110			`return -1;`
111			`if (state->__value.__wchb[0] < 0xc2)`
112			`/* overlong UTF-8 sequence */`
113			`return -1;`
114			`state->__count = 0;`
115			`*pwc = (wchar_t)((state->__value.__wchb[0] & 0x1f) << 6)`
116			`\| (wchar_t)(ch & 0x3f);`
117			`return i;`
118			`}`
119			`else if (ch >= 0xe0 && ch <= 0xef)`
120			`{`
121			`/* three-byte sequence */`
122			`wchar_t tmp;`
123			`state->__value.__wchb[0] = ch;`
124			`if (state->__count == 0)`
125			`state->__count = 1;`
126			`else`
127			`++n;`
128			`if (n < 2)`
129			`return -2;`
130			`ch = (state->__count == 1) ? t[i++] : state->__value.__wchb[1];`
131			`if (state->__value.__wchb[0] == 0xe0 && ch < 0xa0)`
132			`/* overlong UTF-8 sequence */`
133			`return -1;`
134			`if (ch < 0x80 \|\| ch > 0xbf)`
135			`return -1;`
136			`state->__value.__wchb[1] = ch;`
137			`state->__count = 2;`
138			`if (n < 3)`
139			`return -2;`
140			`ch = t[i++];`
141			`if (ch < 0x80 \|\| ch > 0xbf)`
142			`return -1;`
143			`state->__count = 0;`
144			`tmp = (wchar_t)((state->__value.__wchb[0] & 0x0f) << 12)`
145			`\| (wchar_t)((state->__value.__wchb[1] & 0x3f) << 6)`
146			`\| (wchar_t)(ch & 0x3f);`
147
148			`if (tmp >= 0xd800 && tmp <= 0xdfff)`
149			`return -1;`
150			`*pwc = tmp;`
151			`return i;`
152			`}`
153			`else if (ch >= 0xf0 && ch <= 0xf7)`
154			`{`
155			`/* four-byte sequence */`
156			`if (sizeof(wchar_t) < 4)`
157			`return -1; /* we can't store such a value */`
158			`state->__value.__wchb[0] = ch;`
159			`if (state->__count == 0)`
160			`state->__count = 1;`
161			`else`
162			`++n;`
163			`if (n < 2)`
164			`return -2;`
165			`ch = (state->__count == 1) ? t[i++] : state->__value.__wchb[1];`
166			`if (state->__value.__wchb[0] == 0xf0 && ch < 0x90)`
167			`/* overlong UTF-8 sequence */`
168			`return -1;`
169			`if (ch < 0x80 \|\| ch > 0xbf)`
170			`return -1;`
171			`state->__value.__wchb[1] = ch;`
172			`if (state->__count == 1)`
173			`state->__count = 2;`
174			`else`
175			`++n;`
176			`if (n < 3)`
177			`return -2;`
178			`ch = (state->__count == 2) ? t[i++] : state->__value.__wchb[2];`
179			`if (ch < 0x80 \|\| ch > 0xbf)`
180			`return -1;`
181			`state->__value.__wchb[2] = ch;`
182			`state->__count = 3;`
183			`if (n < 4)`
184			`return -2;`
185			`ch = t[i++];`
186			`if (ch < 0x80 \|\| ch > 0xbf)`
187			`return -1;`
188			`*pwc = (wchar_t)((state->__value.__wchb[0] & 0x07) << 18)`
189			`\| (wchar_t)((state->__value.__wchb[1] & 0x3f) << 12)`
190			`\| (wchar_t)((state->__value.__wchb[2] & 0x3f) << 6)`
191			`\| (wchar_t)(ch & 0x3f);`
192
193			`state->__count = 0;`
194			`return i;`
195			`}`
196			`else if (ch >= 0xf8 && ch <= 0xfb)`
197			`{`
198			`/* five-byte sequence */`
199			`if (sizeof(wchar_t) < 4)`
200			`return -1; /* we can't store such a value */`
201			`state->__value.__wchb[0] = ch;`
202			`if (state->__count == 0)`
203			`state->__count = 1;`
204			`else`
205			`++n;`
206			`if (n < 2)`
207			`return -2;`
208			`ch = (state->__count == 1) ? t[i++] : state->__value.__wchb[1];`
209			`if (state->__value.__wchb[0] == 0xf8 && ch < 0x88)`
210			`/* overlong UTF-8 sequence */`
211			`return -1;`
212			`if (ch < 0x80 \|\| ch > 0xbf)`
213			`return -1;`
214			`state->__value.__wchb[1] = ch;`
215			`if (state->__count == 1)`
216			`state->__count = 2;`
217			`else`
218			`++n;`
219			`if (n < 3)`
220			`return -2;`
221			`ch = (state->__count == 2) ? t[i++] : state->__value.__wchb[2];`
222			`if (ch < 0x80 \|\| ch > 0xbf)`
223			`return -1;`
224			`state->__value.__wchb[2] = ch;`
225			`if (state->__count == 2)`
226			`state->__count = 3;`
227			`else`
228			`++n;`
229			`if (n < 4)`
230			`return -2;`
231			`ch = (state->__count == 3) ? t[i++] : state->__value.__wchb[3];`
232			`if (ch < 0x80 \|\| ch > 0xbf)`
233			`return -1;`
234			`state->__value.__wchb[3] = ch;`
235			`state->__count = 4;`
236			`if (n < 5)`
237			`return -2;`
238			`ch = t[i++];`
239			`*pwc = (wchar_t)((state->__value.__wchb[0] & 0x03) << 24)`
240			`\| (wchar_t)((state->__value.__wchb[1] & 0x3f) << 18)`
241			`\| (wchar_t)((state->__value.__wchb[2] & 0x3f) << 12)`
242			`\| (wchar_t)((state->__value.__wchb[3] & 0x3f) << 6)`
243			`\| (wchar_t)(ch & 0x3f);`
244
245			`state->__count = 0;`
246			`return i;`
247			`}`
248			`else if (ch >= 0xfc && ch <= 0xfd)`
249			`{`
250			`/* six-byte sequence */`
251			`int ch2;`
252			`if (sizeof(wchar_t) < 4)`
253			`return -1; /* we can't store such a value */`
254			`state->__value.__wchb[0] = ch;`
255			`if (state->__count == 0)`
256			`state->__count = 1;`
257			`else`
258			`++n;`
259			`if (n < 2)`
260			`return -2;`
261			`ch = (state->__count == 1) ? t[i++] : state->__value.__wchb[1];`
262			`if (state->__value.__wchb[0] == 0xfc && ch < 0x84)`
263			`/* overlong UTF-8 sequence */`
264			`return -1;`
265			`if (ch < 0x80 \|\| ch > 0xbf)`
266			`return -1;`
267			`state->__value.__wchb[1] = ch;`
268			`if (state->__count == 1)`
269			`state->__count = 2;`
270			`else`
271			`++n;`
272			`if (n < 3)`
273			`return -2;`
274			`ch = (state->__count == 2) ? t[i++] : state->__value.__wchb[2];`
275			`if (ch < 0x80 \|\| ch > 0xbf)`
276			`return -1;`
277			`state->__value.__wchb[2] = ch;`
278			`if (state->__count == 2)`
279			`state->__count = 3;`
280			`else`
281			`++n;`
282			`if (n < 4)`
283			`return -2;`
284			`ch = (state->__count == 3) ? t[i++] : state->__value.__wchb[3];`
285			`if (ch < 0x80 \|\| ch > 0xbf)`
286			`return -1;`
287			`state->__value.__wchb[3] = ch;`
288			`if (state->__count == 3)`
289			`state->__count = 4;`
290			`else`
291			`++n;`
292			`if (n < 5)`
293			`return -2;`
294			`if (n == 5)`
295			`return -1; /* at this point we can't save enough to restart */`
296			`ch = t[i++];`
297			`if (ch < 0x80 \|\| ch > 0xbf)`
298			`return -1;`
299			`ch2 = t[i++];`
300			`*pwc = (wchar_t)((state->__value.__wchb[0] & 0x01) << 30)`
301			`\| (wchar_t)((state->__value.__wchb[1] & 0x3f) << 24)`
302			`\| (wchar_t)((state->__value.__wchb[2] & 0x3f) << 18)`
303			`\| (wchar_t)((state->__value.__wchb[3] & 0x3f) << 12)`
304			`\| (wchar_t)((ch & 0x3f) << 6)`
305			`\| (wchar_t)(ch2 & 0x3f);`
306
307			`state->__count = 0;`
308			`return i;`
309			`}`
310			`else`
311			`return -1;`
312			`}`
313			`else if (!strcmp (__lc_ctype, "C-SJIS"))`
314			`{`
315			`int ch;`
316			`int i = 0;`
317			`if (s == NULL)`
318			`return 0; /* not state-dependent */`
319			`ch = t[i++];`
320			`if (state->__count == 0)`
321			`{`
322			`if (_issjis1 (ch))`
323			`{`
324			`state->__value.__wchb[0] = ch;`
325			`state->__count = 1;`
326			`if (n <= 1)`
327			`return -2;`
328			`ch = t[i++];`
329			`}`
330			`}`
331			`if (state->__count == 1)`
332			`{`
333			`if (_issjis2 (ch))`
334			`{`
335			`*pwc = (((wchar_t)state->__value.__wchb[0]) << 8) + (wchar_t)ch;`
336			`state->__count = 0;`
337			`return i;`
338			`}`
339			`else`
340			`return -1;`
341			`}`
342			`}`
343			`else if (!strcmp (__lc_ctype, "C-EUCJP"))`
344			`{`
345			`int ch;`
346			`int i = 0;`
347			`if (s == NULL)`
348			`return 0; /* not state-dependent */`
349			`ch = t[i++];`
350			`if (state->__count == 0)`
351			`{`
352			`if (_iseucjp (ch))`
353			`{`
354			`state->__value.__wchb[0] = ch;`
355			`state->__count = 1;`
356			`if (n <= 1)`
357			`return -2;`
358			`ch = t[i++];`
359			`}`
360			`}`
361			`if (state->__count == 1)`
362			`{`
363			`if (_iseucjp (ch))`
364			`{`
365			`*pwc = (((wchar_t)state->__value.__wchb[0]) << 8) + (wchar_t)ch;`
366			`state->__count = 0;`
367			`return i;`
368			`}`
369			`else`
370			`return -1;`
371			`}`
372			`}`
373			`else if (!strcmp (__lc_ctype, "C-JIS"))`
374			`{`
375			`JIS_STATE curr_state;`
376			`JIS_ACTION action;`
377			`JIS_CHAR_TYPE ch;`
378			`unsigned char *ptr;`
379			`unsigned int i;`
380			`int curr_ch;`
381
382			`if (s == NULL)`
383			`{`
384			`state->__state = ASCII;`
385			`return 1; /* state-dependent */`
386			`}`
387
388			`curr_state = state->__state;`
389			`ptr = t;`
390
391			`for (i = 0; i < n; ++i)`
392			`{`
393			`curr_ch = t[i];`
394			`switch (curr_ch)`
395			`{`
396			`case ESC_CHAR:`
397			`ch = ESCAPE;`
398			`break;`
399			`case '$':`
400			`ch = DOLLAR;`
401			`break;`
402			`case '@':`
403			`ch = AT;`
404			`break;`
405			`case '(':`
406			`ch = BRACKET;`
407			`break;`
408			`case 'B':`
409			`ch = B;`
410			`break;`
411			`case 'J':`
412			`ch = J;`
413			`break;`
414			`case '\0':`
415			`ch = NUL;`
416			`break;`
417			`default:`
418			`if (_isjis (curr_ch))`
419			`ch = JIS_CHAR;`
420			`else`
421			`ch = OTHER;`
422			`}`
423
424			`action = JIS_action_table[curr_state][ch];`
425			`curr_state = JIS_state_table[curr_state][ch];`
426
427			`switch (action)`
428			`{`
429			`case NOOP:`
430			`break;`
431			`case EMPTY:`
432			`state->__state = ASCII;`
433			`*pwc = (wchar_t)0;`
434			`return 0;`
435			`case COPY_A:`
436			`state->__state = ASCII;`
437			`pwc = (wchar_t)ptr;`
438			`return (i + 1);`
439			`case COPY_J1:`
440			`state->__value.__wchb[0] = t[i];`
441			`break;`
442			`case COPY_J2:`
443			`state->__state = JIS;`
444			`*pwc = (((wchar_t)state->__value.__wchb[0]) << 8) + (wchar_t)(t[i]);`
445			`return (i + 1);`
446			`case MAKE_A:`
447			`ptr = (char *)(t + i + 1);`
448			`break;`
449			`case ERROR:`
450			`default:`
451			`return -1;`
452			`}`
453
454			`}`
455
456			`state->__state = curr_state;`
457			`return -2; /* n < bytes needed */`
458			`}`
459			`#endif /* _MB_CAPABLE */`
460
461			`/* otherwise this must be the "C" locale or unknown locale */`
462			`if (s == NULL)`
463			`return 0; /* not state-dependent */`
464
465			`pwc = (wchar_t)t;`
466
467			`if (*t == '\0')`
468			`return 0;`
469
470			`return 1;`
471			`}`