/src/w3m/libwc/iso2022.c

Source

#include "wc.h"
#include "iso2022.h"
#include "jis.h"
#include "big5.h"
#include "johab.h"
#include "wtf.h"
#ifdef USE_UNICODE
#include "ucs.h"
#endif

#define C0  WC_ISO_MAP_C0
#define C1  WC_ISO_MAP_C1
#define GL  WC_ISO_MAP_GL
#define GR  WC_ISO_MAP_GR
#define GL2 WC_ISO_MAP_GL96
#define GR2 WC_ISO_MAP_GR96
#define SO  WC_ISO_MAP_SO
#define SI  WC_ISO_MAP_SI
#define ESC WC_ISO_MAP_ESC
#define SS2 WC_ISO_MAP_SS2
#define SS3 WC_ISO_MAP_SS3

wc_uint8 WC_ISO_MAP[ 0x100 ] = {
   C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, SO, SI,
   C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, ESC,C0, C0, C0, C0,
   GL2,GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL,
   GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL,
   GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL,
   GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL,
   GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL,
   GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL2,

   C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, SS2,SS3,
   C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1,
   GR2,GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR,
   GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR,
   GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR,
   GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR,
   GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR,
   GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR, GR2,
};

static wc_uchar cs94_gmap[ 0x80 - WC_F_ISO_BASE ];
static wc_uchar cs94w_gmap[ 0x80 - WC_F_ISO_BASE ];
static wc_uchar cs96_gmap[ 0x80 - WC_F_ISO_BASE ];
static wc_uchar cs96w_gmap[ 0x80 - WC_F_ISO_BASE ];
static wc_uchar cs942_gmap[ 0x80 - WC_F_ISO_BASE ];

static void
wtf_push_iso2022(Str os, wc_ccs ccs, wc_uint32 code)
{
    switch (ccs) {
    case WC_CCS_JIS_C_6226:
    case WC_CCS_JIS_X_0208:
    case WC_CCS_JIS_X_0213_1:
  ccs = wc_jisx0208_or_jisx02131(code);
  break;
    case WC_CCS_JIS_X_0212:
    case WC_CCS_JIS_X_0213_2:
  ccs = wc_jisx0212_or_jisx02132(code);
  break;
    case WC_CCS_JIS_X_0201:
    case WC_CCS_GB_1988:
  ccs = WC_CCS_US_ASCII;
  break;
    }
    wtf_push(os, ccs, code);
}

Str
wc_conv_from_iso2022(Str is, wc_ces ces)
{
    Str os;
    wc_uchar *sp = (wc_uchar *)is->ptr;
    wc_uchar *ep = sp + is->length;
    wc_uchar *p, *q = NULL;
    int state = WC_ISO_NOSTATE;
    wc_status st;
    wc_ccs gl_ccs, gr_ccs;

    for (p = sp; p < ep && !(WC_ISO_MAP[*p] & WC_ISO_MAP_DETECT); p++)
  ;
    if (p == ep)
  return is;
    os = Strnew_size(is->length);
    if (p > sp)
  Strcat_charp_n(os, is->ptr, (int)(p - sp));

    wc_input_init(ces, &st);
    gl_ccs = st.design[st.gl];
    gr_ccs = st.design[st.gr];

    for (; p < ep; p++) {
  switch (state) {
  case WC_ISO_NOSTATE:
      switch (WC_ISO_MAP[*p]) {
      case GL2:
    gl_ccs = st.ss ? st.design[st.ss]
      : st.design[st.gl];
    if (!(WC_CCS_TYPE(gl_ccs) & WC_CCS_A_CS96)) {
        Strcat_char(os, (char)*p);
        break;
    }
      case GL:
    gl_ccs = st.ss ? st.design[st.ss]
      : st.design[st.gl];
    if (WC_CCS_IS_WIDE(gl_ccs)) {
        q = p;
        state = WC_ISO_MBYTE1;
        continue;
    } else if (gl_ccs == WC_CES_US_ASCII)
        Strcat_char(os, (char)*p);
    else
        wtf_push_iso2022(os, gl_ccs, (wc_uint32)*p);
    break;
      case GR2:
    gr_ccs = st.ss ? st.design[st.ss]
      : st.design[st.gr];
    if (!(WC_CCS_TYPE(gr_ccs) & WC_CCS_A_CS96)) {
        wtf_push_unknown(os, p, 1);
        break;
    }
      case GR:
    gr_ccs = st.ss ? st.design[st.ss]
      : st.design[st.gr];
    if (WC_CCS_IS_WIDE(gr_ccs)) {
        q = p;
        state = WC_EUC_MBYTE1;
        continue;
    } else if (gr_ccs)
        wtf_push_iso2022(os, gr_ccs, (wc_uint32)*p);
    else
        wtf_push_unknown(os, p, 1);
    break;
      case C0:
    Strcat_char(os, (char)*p);
    break;
      case C1:
    wtf_push(os, WC_CCS_C1, (wc_uint32)*p);
    break;
      case ESC:
    st.ss = 0;
    if (wc_parse_iso2022_esc(&p, &st))
        state = st.state;
    else
        Strcat_char(os, (char)*p);
    continue;
      case SI:
    st.gl = 0;
    break;
      case SO:
    st.gl = 1;
    break;
      case SS2:
    if (! st.design[2]) {
        wtf_push_unknown(os, p, 1);
        break;
    }
    st.ss = 2;
    continue;
      case SS3:
    if (! st.design[3]) {
        wtf_push_unknown(os, p, 1);
        break;
    }
    st.ss = 3;
    continue;
      }
      break;
  case WC_ISO_MBYTE1:
      switch (WC_ISO_MAP[*p]) {
      case GL2:
    if (!(WC_CCS_TYPE(gl_ccs) & WC_CCS_A_CS96)) {
        Strcat_char(os, (char)*q);
        Strcat_char(os, (char)*p);
        break;
    }
      case GL:
    wtf_push_iso2022(os, gl_ccs, ((wc_uint32)*q << 8) | *p);
    break;
      default:
    wtf_push_unknown(os, q, 2);
    break;
      }
      break;
  case WC_EUC_MBYTE1:
      switch (WC_ISO_MAP[*p]) {
      case GR2:
    if (!(WC_CCS_TYPE(gr_ccs) & WC_CCS_A_CS96)) {
        wtf_push_unknown(os, q, 2);
        break;
    }
      case GR:
    if (gr_ccs == WC_CCS_CNS_11643_X) {
        state = WC_EUC_TW_MBYTE2;
        continue;
    }
    wtf_push_iso2022(os, gr_ccs, ((wc_uint32)*q << 8) | *p);
    break;
      default:
    wtf_push_unknown(os, q, 2);
    break;
      }
      break;
  case WC_EUC_TW_MBYTE2:
      if (WC_ISO_MAP[*p] == GR) {
    if (0xa1 <= *q && *q <= 0xa7) {
        wtf_push_iso2022(os, WC_CCS_CNS_11643_1 + (*q - 0xa1),
      ((wc_uint32)*(q+1) << 8) | *p);
        break;
    }
    if (0xa8 <= *q && *q <= 0xb0) {
        wtf_push_iso2022(os, WC_CCS_CNS_11643_8 + (*q - 0xa8),
      ((wc_uint32)*(q+1) << 8) | *p);
        break;
    }
      }
      wtf_push_unknown(os, q, 3);
      break;
  case WC_ISO_CSWSR:
      if (*p == WC_C_ESC && *(p+1) == WC_C_CSWSR) {
    if (*(p+2) == WC_F_ISO_BASE) {
        state = st.state = WC_ISO_NOSTATE;
        p += 2;
        continue;
    } else if (*(p+2) > WC_F_ISO_BASE && *(p+2) <= 0x7e) {
        p += 2;
        continue;
    }
      }
      wtf_push_unknown(os, p, 1);
      continue;
  case WC_ISO_CSWOSR:
      wtf_push_unknown(os, p, ep - p);
      return os;
      break;
  }
  st.ss = 0;
  state = WC_ISO_NOSTATE;
    }
    switch (state) {
    case WC_ISO_MBYTE1:
    case WC_EUC_MBYTE1:
  wtf_push_unknown(os, p-1, 1);
  break;
    case WC_EUC_TW_MBYTE1:
  wtf_push_unknown(os, p-2, 2);
  break;
    }
    return os;
}

int
wc_parse_iso2022_esc(wc_uchar **ptr, wc_status *st)
{
    wc_uchar *p = *ptr, state, f = 0, g = 0, cs = 0;

    if (*p != WC_C_ESC)
  return 0;
    state = *p;
    for (p++; *p && state; p++) {
  switch (state) {
  case WC_C_ESC:   /* ESC */
      switch (*p) {
      case WC_C_MBCS: /* ESC '$' */
    state = *p;
    continue;
      case WC_C_G0_CS94: /* ESC '(' */
      case WC_C_G1_CS94: /* ESC ')' */
      case WC_C_G2_CS94: /* ESC '*' */
      case WC_C_G3_CS94: /* ESC '+' */
    state = cs = WC_C_G0_CS94;
    g = *p & 0x03;
    continue;
      case WC_C_G0_CS96: /* ESC ',' */ /* ISO 2022 does not permit */
      case WC_C_G1_CS96: /* ESC '-' */
      case WC_C_G2_CS96: /* ESC '.' */
      case WC_C_G3_CS96: /* ESC '/' */
    state = cs = WC_C_G0_CS96;
    g = *p & 0x03;
    continue;
      case WC_C_C0: /* ESC '!' */ /* not supported */
      case WC_C_C1: /* ESC '"' */ /* not supported */
      case WC_C_REP: /* ESC '&' */ /* not supported */
    state = cs = WC_C_C0;
    continue;
      case WC_C_CSWSR: /* ESC '%' */ /* not supported */
    state = cs = WC_C_CSWSR;
    continue;
      case WC_C_SS2: /* ESC 'N' */
    st->ss = 2; *ptr = p; return 1;
      case WC_C_SS3: /* ESC 'O' */
    st->ss = 3; *ptr = p; return 1;
      case WC_C_LS2: /* ESC 'n' */
    st->gl = 2; *ptr = p; return 1;
      case WC_C_LS3: /* ESC 'o' */
    st->gl = 3; *ptr = p; return 1;
      case WC_C_LS1R: /* ESC '~' */
    st->gr = 1; *ptr = p; return 1;
      case WC_C_LS2R: /* ESC '}' */
    st->gr = 2; *ptr = p; return 1;
      case WC_C_LS3R: /* ESC '|' */
    st->gr = 3; *ptr = p; return 1;
      default:
    return 0;
      }
      break;
  case WC_C_MBCS:   /* ESC '$' */
      switch (*p) {
      case WC_F_JIS_C_6226: /* ESC '$' @ */
      case WC_F_JIS_X_0208: /* ESC '$' B */
      case WC_F_GB_2312: /* ESC '$' A */
    state = 0;
    cs = WC_C_G0_CS94 | 0x80;
    g = 0;
    f = *p;
    break;
      case WC_C_G0_CS94: /* ESC '$' '(' */
      case WC_C_G1_CS94: /* ESC '$' ')' */
      case WC_C_G2_CS94: /* ESC '$' '*' */
      case WC_C_G3_CS94: /* ESC '$' '+' */
    state = cs = WC_C_G0_CS94 | 0x80;
    g = *p & 0x03;
    continue;
      case WC_C_G0_CS96: /* ESC '$' ',' */ /* ISO 2022 does not permit */
      case WC_C_G1_CS96: /* ESC '$' '-' */
      case WC_C_G2_CS96: /* ESC '$' '.' */
      case WC_C_G3_CS96: /* ESC '$' '/' */
    state = cs = WC_C_G0_CS96 | 0x80;
    g = *p & 0x03;
    continue;
      default:
    return 0;
      }
      break;
  case WC_C_G0_CS94: /* ESC [()*+] F */
      if (*p == WC_C_CS942) { /* ESC [()*+] '!' */
    state = cs = WC_C_CS942 | 0x80;
    g = *p & 0x03;
    continue;
      }
  case WC_C_G0_CS96: /* ESC [,-./] F */
  case WC_C_G0_CS94 | 0x80:  /* ESC '$' [()*+] F */
  case WC_C_G0_CS96 | 0x80:  /* ESC '$' [,-./] F */
  case WC_C_CS942 | 0x80:  /* ESC [()*+] '!' F */
  case WC_C_C0:   /* ESC [!"&] F */
  case WC_C_CSWSR | 0x80:  /* ESC '%' '/' F */
      state = 0;
      f = *p;
      break;
  case WC_C_CSWSR: /* ESC '%' F */
      if (*p == WC_C_CSWOSR) { /* ESC '%' '/' */
    state = cs = WC_C_CSWSR | 0x80;
    continue;
      }
      state = 0;
      f = *p;
      break;
  default:
      return 0;
  }
    }
    if (f < WC_F_ISO_BASE || f > 0x7e)
  return 0;
    switch (cs) {
    case WC_C_G0_CS94:
  st->design[g] = WC_CCS_SET_CS94(f);
  break;
    case WC_C_G0_CS94 | 0x80:
  st->design[g] = WC_CCS_SET_CS94W(f);
  break;
    case WC_C_G0_CS96:
  st->design[g] = WC_CCS_SET_CS96(f);
  break;
    case WC_C_G0_CS96 | 0x80:
  st->design[g] = WC_CCS_SET_CS96W(f);
  break;
    case WC_C_CS942 | 0x80:
  st->design[g] = WC_CCS_SET_CS942(f);
  break;
    case WC_C_CSWSR:
  if (f == WC_F_ISO_BASE)
      st->state = WC_ISO_NOSTATE;
  else
      st->state = WC_ISO_CSWSR;
  break;
    case WC_C_CSWOSR:
  st->state = WC_ISO_CSWOSR;
  break;
    }
    *ptr = p - 1;
    return 1;
}

void
wc_push_to_iso2022(Str os, wc_wchar_t cc, wc_status *st)
{
    wc_uchar g = 0;
    wc_bool is_wide = WC_FALSE, retry = WC_FALSE;
    wc_wchar_t cc2;

  while (1) {
    switch (WC_CCS_TYPE(cc.ccs)) {
    case WC_CCS_A_CS94:
  if (cc.ccs == WC_CCS_US_ASCII)
      cc.ccs = st->g0_ccs;
  if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE)
      g = cs94_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
  break;
    case WC_CCS_A_CS94W:
  is_wide = 1;
  switch (cc.ccs) {
#ifdef USE_UNICODE
  case WC_CCS_JIS_X_0212:
      if (!WcOption.use_jisx0212 && WcOption.use_jisx0213 &&
    WcOption.ucs_conv) {
    cc2 = wc_jisx0212_to_jisx0213(cc);
    if (cc2.ccs == WC_CCS_JIS_X_0213_1 ||
        cc2.ccs == WC_CCS_JIS_X_0213_2) {
        cc = cc2;
        continue;
    }
      }
      break;
  case WC_CCS_JIS_X_0213_1:
  case WC_CCS_JIS_X_0213_2:
      if (!WcOption.use_jisx0213 && WcOption.use_jisx0212 &&
    WcOption.ucs_conv) {
    cc2 = wc_jisx0213_to_jisx0212(cc);
    if (cc2.ccs == WC_CCS_JIS_X_0212) {
        cc = cc2;
        continue;
    }
      }
      break;
#endif
  }
  if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE)
      g = cs94w_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
  break;
    case WC_CCS_A_CS96:
  if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE)
      g = cs96_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
  break;
    case WC_CCS_A_CS96W:
  is_wide = 1;
  if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE)
      g = cs96w_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
  break;
    case WC_CCS_A_CS942:
  if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE)
      g = cs942_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
  break;
    case WC_CCS_A_UNKNOWN_W:
  if (WcOption.no_replace)
      return;
  is_wide = 1;
  cc.ccs = WC_CCS_US_ASCII;
  if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE)
      g = cs94_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
  cc.code = ((wc_uint32)WC_REPLACE_W[0] << 8) | WC_REPLACE_W[1];
  break;
    case WC_CCS_A_UNKNOWN:
  if (WcOption.no_replace)
      return;
  cc.ccs = WC_CCS_US_ASCII;
  if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE)
      g = cs94_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
  cc.code = (wc_uint32)WC_REPLACE[0];
  break;
    default:
  if ((cc.ccs == WC_CCS_JOHAB || cc.ccs == WC_CCS_JOHAB_1 ||
    cc.ccs == WC_CCS_JOHAB_2 || cc.ccs == WC_CCS_JOHAB_3) &&
    cs94w_gmap[WC_F_KS_X_1001 - WC_F_ISO_BASE]) {
      wc_wchar_t cc2 = wc_johab_to_ksx1001(cc);
      if (cc2.ccs == WC_CCS_KS_X_1001) {
    cc = cc2;
    continue;
      }
  }
#ifdef USE_UNICODE
  if (WcOption.ucs_conv)
      cc = wc_any_to_iso2022(cc, st);
  else
#endif
      cc.ccs = WC_CCS_IS_WIDE(cc.ccs) ? WC_CCS_UNKNOWN_W : WC_CCS_UNKNOWN;
  continue;
    }
    if (! g) {
#ifdef USE_UNICODE
  if (WcOption.ucs_conv && ! retry)
      cc = wc_any_to_any_ces(cc, st);
  else
#endif
      cc.ccs = WC_CCS_IS_WIDE(cc.ccs) ? WC_CCS_UNKNOWN_W : WC_CCS_UNKNOWN;
  retry = WC_TRUE;
  continue;
    }

    wc_push_iso2022_esc(os, cc.ccs, g, 1, st);
    if (is_wide)
  Strcat_char(os, (char)((cc.code >> 8) & 0x7f));
    Strcat_char(os, (char)(cc.code & 0x7f));
    return;
  }
}

void
wc_push_to_iso2022_end(Str os, wc_status *st)
{
    if (st->design[1] != 0 && st->design[1] != st->g1_ccs)
  wc_push_iso2022_esc(os, st->g1_ccs, WC_C_G1_CS94, 0, st);
    wc_push_iso2022_esc(os, st->g0_ccs, WC_C_G0_CS94, 1, st);
}

void
wc_push_iso2022_esc(Str os, wc_ccs ccs, wc_uchar g, wc_uint8 invoke, wc_status *st)
{
    wc_uint8 g_invoke = g & 0x03;

    if (st->design[g_invoke] != ccs) {
  Strcat_char(os, WC_C_ESC);
  if (WC_CCS_IS_WIDE(ccs)) {
      Strcat_char(os, WC_C_MBCS);
      if (g_invoke != 0 ||
    (ccs != WC_CCS_JIS_C_6226 &&
     ccs != WC_CCS_JIS_X_0208 &&
     ccs != WC_CCS_GB_2312))
    Strcat_char(os, (char)g);
  } else {
      Strcat_char(os, (char)g);
      if ((ccs & WC_CCS_A_ISO_2022) == WC_CCS_A_CS942)
    Strcat_char(os, WC_C_CS942);
  }
  Strcat_char(os, (char)WC_CCS_GET_F(ccs));
  st->design[g_invoke] = ccs;
    }
    if (! invoke)
  return;

    switch (g_invoke) {
    case 0:
  if (st->gl != 0) {
      Strcat_char(os, WC_C_SI);
      st->gl = 0;
  }
  break;
    case 1:
  if (st->gl != 1) {
      Strcat_char(os, WC_C_SO);
      st->gl = 1;
  }
  break;
    case 2:
  Strcat_char(os, WC_C_ESC);
  Strcat_char(os, WC_C_SS2);
  break;
    case 3:
  Strcat_char(os, WC_C_ESC);
  Strcat_char(os, WC_C_SS3);
  break;
    }
}

void
wc_push_to_euc(Str os, wc_wchar_t cc, wc_status *st)
{
    wc_ccs g1_ccs = st->ces_info->gset[1].ccs;

  while (1) {
    if (cc.ccs == g1_ccs) {
  Strcat_char(os, (char)((cc.code >> 8) | 0x80));
  Strcat_char(os, (char)((cc.code & 0xff) | 0x80));
  return;
    }
    switch (cc.ccs) {
    case WC_CCS_US_ASCII:
  Strcat_char(os, (char)cc.code);
  return;
    case WC_CCS_C1:
  Strcat_char(os, (char)(cc.code | 0x80));
  return;
    case WC_CCS_UNKNOWN_W:
  if (!WcOption.no_replace)
      Strcat_charp(os, WC_REPLACE_W);
  return;
    case WC_CCS_UNKNOWN:
  if (!WcOption.no_replace)
      Strcat_charp(os, WC_REPLACE);
  return;
    case WC_CCS_JOHAB:
    case WC_CCS_JOHAB_1:
    case WC_CCS_JOHAB_2:
    case WC_CCS_JOHAB_3:
  if (st->ces_info->id == WC_CES_EUC_KR) {
      cc = wc_johab_to_ksx1001(cc);
      continue;
  }
    default:
#ifdef USE_UNICODE
  if (WcOption.ucs_conv)
      cc = wc_any_to_any_ces(cc, st);
  else
#endif
      cc.ccs = WC_CCS_IS_WIDE(cc.ccs) ? WC_CCS_UNKNOWN_W : WC_CCS_UNKNOWN;
  continue;
    }
  }
}

void
wc_push_to_eucjp(Str os, wc_wchar_t cc, wc_status *st)
{
  while (1) {
    switch (cc.ccs) {
    case WC_CCS_US_ASCII:
  Strcat_char(os, (char)cc.code);
  return;
    case WC_CCS_JIS_X_0201K:
  if (WcOption.use_jisx0201k) {
      Strcat_char(os, WC_C_SS2R);
      Strcat_char(os, (char)(cc.code | 0x80));
      return;
  } else if (WcOption.fix_width_conv)
      cc.ccs = WC_CCS_UNKNOWN;
  else
      cc = wc_jisx0201k_to_jisx0208(cc);
  continue;
    case WC_CCS_JIS_X_0208:
  break;
    case WC_CCS_JIS_X_0213_1:
  if (WcOption.use_jisx0213)
      break;
#ifdef USE_UNICODE
  else if (WcOption.ucs_conv && WcOption.use_jisx0212)
      cc = wc_jisx0213_to_jisx0212(cc);
#endif
  else
      cc.ccs = WC_CCS_UNKNOWN_W;
  continue;
    case WC_CCS_JIS_X_0212:
  if (WcOption.use_jisx0212) {
      Strcat_char(os, WC_C_SS3R);
      break;
  }
#ifdef USE_UNICODE
  else if (WcOption.ucs_conv && WcOption.use_jisx0213)
      cc = wc_jisx0212_to_jisx0213(cc);
#endif
  else
      cc.ccs = WC_CCS_UNKNOWN_W;
  continue;
    case WC_CCS_JIS_X_0213_2:
  if (WcOption.use_jisx0213) {
      Strcat_char(os, WC_C_SS3R);
      break;
  }
#ifdef USE_UNICODE
  else if (WcOption.ucs_conv && WcOption.use_jisx0212)
      cc = wc_jisx0213_to_jisx0212(cc);
#endif
  else
      cc.ccs = WC_CCS_UNKNOWN_W;
  continue;
    case WC_CCS_C1:
  Strcat_char(os, (char)(cc.code | 0x80));
  return;
    case WC_CCS_UNKNOWN_W:
  if (!WcOption.no_replace)
      Strcat_charp(os, WC_REPLACE_W);
  return;
    case WC_CCS_UNKNOWN:
  if (!WcOption.no_replace)
      Strcat_charp(os, WC_REPLACE);
  return;
    default:
#ifdef USE_UNICODE
  if (WcOption.ucs_conv)
      cc = wc_any_to_any_ces(cc, st);
  else
#endif
      cc.ccs = WC_CCS_IS_WIDE(cc.ccs) ? WC_CCS_UNKNOWN_W : WC_CCS_UNKNOWN;
  continue;
    }
    Strcat_char(os, (char)((cc.code >> 8) | 0x80));
    Strcat_char(os, (char)((cc.code & 0xff) | 0x80));
    return;
  }
}

void
wc_push_to_euctw(Str os, wc_wchar_t cc, wc_status *st)
{
  while (1) {
    switch (cc.ccs) {
    case WC_CCS_US_ASCII:
  Strcat_char(os, (char)cc.code);
  return;
    case WC_CCS_CNS_11643_1:
  break;
    case WC_CCS_CNS_11643_2:
    case WC_CCS_CNS_11643_3:
    case WC_CCS_CNS_11643_4:
    case WC_CCS_CNS_11643_5:
    case WC_CCS_CNS_11643_6:
    case WC_CCS_CNS_11643_7:
  Strcat_char(os, WC_C_SS2R);
  Strcat_char(os, (char)(0xA1 + (cc.ccs - WC_CCS_CNS_11643_1)));
  break;
    case WC_CCS_CNS_11643_8:
    case WC_CCS_CNS_11643_9:
    case WC_CCS_CNS_11643_10:
    case WC_CCS_CNS_11643_11:
    case WC_CCS_CNS_11643_12:
    case WC_CCS_CNS_11643_13:
    case WC_CCS_CNS_11643_14:
    case WC_CCS_CNS_11643_15:
    case WC_CCS_CNS_11643_16:
  Strcat_char(os, WC_C_SS2R);
  Strcat_char(os, (char)(0xA8 + (cc.ccs - WC_CCS_CNS_11643_8)));
  break;
    case WC_CCS_C1:
  Strcat_char(os, (char)(cc.code | 0x80));
  return;
    case WC_CCS_UNKNOWN_W:
  if (!WcOption.no_replace)
      Strcat_charp(os, WC_REPLACE_W);
  return;
    case WC_CCS_UNKNOWN:
  if (!WcOption.no_replace)
      Strcat_charp(os, WC_REPLACE);
  return;
    default:
#ifdef USE_UNICODE
  if (WcOption.ucs_conv)
      cc = wc_any_to_any_ces(cc, st);
  else
#endif
      cc.ccs = WC_CCS_IS_WIDE(cc.ccs) ? WC_CCS_UNKNOWN_W : WC_CCS_UNKNOWN;
  continue;
    }
    Strcat_char(os, (char)((cc.code >> 8) | 0x80));
    Strcat_char(os, (char)((cc.code & 0xff) | 0x80));
    return;
  }
}

void
wc_push_to_iso8859(Str os, wc_wchar_t cc, wc_status *st)
{
    wc_ccs g1_ccs = st->ces_info->gset[1].ccs;

  while (1) {
    if (cc.ccs == g1_ccs) {
  Strcat_char(os, (char)(cc.code | 0x80));
  return;
    }
    switch (cc.ccs) {
    case WC_CCS_US_ASCII:
  Strcat_char(os, (char)cc.code);
  return;
    case WC_CCS_C1:
  Strcat_char(os, (char)(cc.code | 0x80));
  return;
    case WC_CCS_UNKNOWN_W:
  if (!WcOption.no_replace)
      Strcat_charp(os, WC_REPLACE_W);
  return;
    case WC_CCS_UNKNOWN:
  if (!WcOption.no_replace)
      Strcat_charp(os, WC_REPLACE);
  return;
    default:
#ifdef USE_UNICODE
  if (WcOption.ucs_conv)
      cc = wc_any_to_any_ces(cc, st);
  else
#endif
      cc.ccs = WC_CCS_IS_WIDE(cc.ccs) ? WC_CCS_UNKNOWN_W : WC_CCS_UNKNOWN;
  continue;
    }
  }
}

void
wc_create_gmap(wc_status *st)
{
    wc_gset *gset = st->ces_info->gset;
    wc_uchar *gset_ext = st->ces_info->gset_ext;
    int i, f;

    if (WcOption.strict_iso2022) {
  for (i = 0; i < WC_F_ISO_BASE; i++) {
      cs94_gmap[i] = 0;
      cs96_gmap[i] = 0;
      cs94w_gmap[i] = 0;
      cs96w_gmap[i] = 0;
      cs942_gmap[i] = 0;
  }
    } else {
  for (i = 0; i < WC_F_ISO_BASE; i++) {
      cs94_gmap[i] = gset_ext[0];
      cs96_gmap[i] = gset_ext[1];
      cs94w_gmap[i] = gset_ext[2];
      cs96w_gmap[i] = gset_ext[3];
      cs942_gmap[i] = gset_ext[0];
  }
    }
    for (i = 0; gset[i].ccs; i++) {
  f = WC_CCS_GET_F(gset[i].ccs) - WC_F_ISO_BASE;
  switch (WC_CCS_TYPE(gset[i].ccs)) {
  case WC_CCS_A_CS94:
      switch (gset[i].ccs) {
      case WC_CCS_JIS_X_0201K:
    if (!WcOption.use_jisx0201k)
        continue;
    break;
      }
      cs94_gmap[f] = gset[i].g;
      break;
  case WC_CCS_A_CS94W:
      switch (gset[i].ccs) {
      case WC_CCS_JIS_X_0212:
    if (!WcOption.use_jisx0212)
        continue;
    break;
      case WC_CCS_JIS_X_0213_1:
      case WC_CCS_JIS_X_0213_2:
    if (!WcOption.use_jisx0213)
        continue;
    break;
      }
      cs94w_gmap[f] = gset[i].g;
      break;
  case WC_CCS_A_CS96:
      cs96_gmap[f] = gset[i].g;
      break;
  case WC_CCS_A_CS96W:
      cs96w_gmap[f] = gset[i].g;
      break;
  case WC_CCS_A_CS942:
      cs942_gmap[f] = gset[i].g;
      break;
  }
    }
}

Str
wc_char_conv_from_iso2022(wc_uchar c, wc_status *st)
{
    static Str os;
    static wc_uchar buf[4];
    static size_t nbuf;
    wc_uchar *p;
    wc_ccs gl_ccs, gr_ccs;

    if (st->state == -1) {
  st->state = WC_ISO_NOSTATE;
  os = Strnew_size(8);
  nbuf = 0;
    }

    gl_ccs = st->ss ? st->design[st->ss] : st->design[st->gl];
    gr_ccs = st->ss ? st->design[st->ss] : st->design[st->gr];

    switch (st->state) {
    case WC_ISO_NOSTATE:
  switch (WC_ISO_MAP[c]) {
  case GL2:
      if (!(WC_CCS_TYPE(gl_ccs) & WC_CCS_A_CS96)) {
    Strcat_char(os, (char)c);
    break;
      }
  case GL:
      if (WC_CCS_IS_WIDE(gl_ccs)) {
    buf[nbuf++] = c;
    st->state = WC_ISO_MBYTE1;
    return NULL;
      } else if (gl_ccs == WC_CES_US_ASCII)
    Strcat_char(os, (char)c);
      else
    wtf_push_iso2022(os, gl_ccs, (wc_uint32)c);
      break;
  case GR2:
      if (!(WC_CCS_TYPE(gr_ccs) & WC_CCS_A_CS96))
    break;
  case GR:
      if (WC_CCS_IS_WIDE(gr_ccs)) {
    buf[nbuf++] = c;
    st->state = WC_EUC_MBYTE1;
    return NULL;
      } else if (gr_ccs)
    wtf_push_iso2022(os, gr_ccs, (wc_uint32)c);
      break;
  case C0:
      Strcat_char(os, (char)c);
      break;
  case C1:
      break;
  case ESC:
      buf[nbuf++] = c;
      st->state = WC_C_ESC;
      return NULL;
  case SI:
      st->gl = 0;
      break;
  case SO:
      st->gl = 1;
      break;
  case SS2:
      if (! st->design[2])
    return os;
      st->ss = 2;
      return NULL;
  case SS3:
      if (! st->design[3])
    return os;
      st->ss = 3;
      return NULL;
  }
  break;
    case WC_ISO_MBYTE1:
  switch (WC_ISO_MAP[c]) {
  case GL2:
      if (!(WC_CCS_TYPE(gl_ccs) & WC_CCS_A_CS96))
    break;
  case GL:
      buf[nbuf++] = c;
      wtf_push_iso2022(os, gl_ccs, ((wc_uint32)buf[0] << 8) | buf[1]);
      break;
  }
  st->state = WC_ISO_NOSTATE;
  break;
    case WC_EUC_MBYTE1:
  switch (WC_ISO_MAP[c]) {
  case GR2:
      if (!(WC_CCS_TYPE(gr_ccs) & WC_CCS_A_CS96))
    break;
  case GR:
      if (gr_ccs == WC_CCS_CNS_11643_X) {
    buf[nbuf++] = c;
    st->state = WC_EUC_TW_MBYTE2;
    return NULL;
      }
      buf[nbuf++] = c;
      wtf_push_iso2022(os, gr_ccs, ((wc_uint32)buf[0] << 8) | buf[1]);
      break;
  }
  st->state = WC_ISO_NOSTATE;
  break;
    case WC_EUC_TW_MBYTE2:
  if (WC_ISO_MAP[c] == GR) {
      buf[nbuf++] = c;
      c = buf[0];
      if (0xa1 <= c && c <= 0xa7) {
    wtf_push_iso2022(os, WC_CCS_CNS_11643_1 + (c - 0xa1),
      ((wc_uint32)buf[1] << 8) | buf[2]);
    break;
      }
      if (0xa8 <= c && c <= 0xb0) {
    wtf_push_iso2022(os, WC_CCS_CNS_11643_8 + (c - 0xa8),
      ((wc_uint32)buf[1] << 8) | buf[2]);
    break;
      }
  }
  st->state = WC_ISO_NOSTATE;
  break;
    case WC_C_ESC:
  switch (c) {
  case WC_C_G0_CS94:
  case WC_C_G1_CS94:
  case WC_C_G2_CS94:
  case WC_C_G3_CS94:
      buf[nbuf++] = c;
      st->state = WC_C_G0_CS94;
      return NULL;
  case WC_C_G0_CS96:
  case WC_C_G1_CS96:
  case WC_C_G2_CS96:
  case WC_C_G3_CS96:
  case WC_C_C0:
  case WC_C_C1:
  case WC_C_REP:
      buf[nbuf++] = c;
      st->state = WC_C_G0_CS96;
      return NULL;
  case WC_C_MBCS:
  case WC_C_CSWSR:
      buf[nbuf++] = c;
      st->state = c;
      return NULL;
  case WC_C_SS2:
      st->ss = 2;
      st->state = WC_ISO_NOSTATE;
      return NULL;
  case WC_C_SS3:
      st->ss = 3;
      st->state = WC_ISO_NOSTATE;
      return NULL;
  case WC_C_LS2:
      st->gl = 2;
      break;
  case WC_C_LS3:
      st->gl = 3;
      break;
  case WC_C_LS2R:
      st->gr = 2;
      break;
  case WC_C_LS3R:
      st->gr = 3;
      break;
  default:
      break;
  }
  break;
    case WC_C_MBCS:
  switch (c) {
  case WC_F_JIS_C_6226:
  case WC_F_JIS_X_0208:
  case WC_F_GB_2312:
      buf[nbuf++] = c;
      p = buf;
      wc_parse_iso2022_esc(&p, st);
      break;
  case WC_C_G0_CS94:
  case WC_C_G1_CS94:
  case WC_C_G2_CS94:
  case WC_C_G3_CS94:
  case WC_C_G0_CS96:
  case WC_C_G1_CS96:
  case WC_C_G2_CS96:
  case WC_C_G3_CS96:
      buf[nbuf++] = c;
      st->state = WC_C_G0_CS96;
      return NULL;
  }
  break;
    case WC_C_CSWSR:
  switch (c) {
  case WC_C_CSWOSR:
      buf[nbuf++] = c;
      st->state = WC_C_G1_CS94;
      return NULL;
  }
  buf[nbuf++] = c;
  p = buf;
  wc_parse_iso2022_esc(&p, st);
  break;
    case WC_C_G0_CS94:
  switch (c) {
  case WC_C_CS942:
      buf[nbuf++] = c;
      st->state = WC_C_G0_CS96;
      return NULL;
  }
    case WC_C_G0_CS96:
  buf[nbuf++] = c;
  p = buf;
  wc_parse_iso2022_esc(&p, st);
  break;
    }
    st->ss = 0;
    st->state = -1;
    return os;
}

Coverage Report

Created: 2026-04-12 06:47