[fusl] clang-format fusl

fusl/src/locale/iconv.c

 #include <iconv.h>
 #include <errno.h>
 #include <wchar.h>
 #include <string.h>
 #include <stdlib.h>
 #include <limits.h>
 #include <stdint.h>
 #include "locale_impl.h"
 
-#define UTF_32BE    0300
-#define UTF_16LE    0301
-#define UTF_16BE    0302
-#define UTF_32LE    0303
-#define UCS2BE      0304
-#define UCS2LE      0305
-#define WCHAR_T     0306
-#define US_ASCII    0307
-#define UTF_8       0310
-#define EUC_JP      0320
-#define SHIFT_JIS   0321
-#define GB18030     0330
-#define GBK         0331
-#define GB2312      0332
-#define BIG5        0340
-#define EUC_KR      0350
+#define UTF_32BE 0300
+#define UTF_16LE 0301
+#define UTF_16BE 0302
+#define UTF_32LE 0303
+#define UCS2BE 0304
+#define UCS2LE 0305
+#define WCHAR_T 0306
+#define US_ASCII 0307
+#define UTF_8 0310
+#define EUC_JP 0320
+#define SHIFT_JIS 0321
+#define GB18030 0330
+#define GBK 0331
+#define GB2312 0332
+#define BIG5 0340
+#define EUC_KR 0350
 
 /* Definitions of charmaps. Each charmap consists of:
  * 1. Empty-string-terminated list of null-terminated aliases.
  * 2. Special type code or number of elided entries.
  * 3. Character table (size determined by field 2). */
 
 static const unsigned char charmaps[] =
-"utf8\0char\0\0\310"
-"wchart\0\0\306"
-"ucs2\0ucs2be\0\0\304"
-"ucs2le\0\0\305"
-"utf16\0utf16be\0\0\302"
-"utf16le\0\0\301"
-"ucs4\0ucs4be\0utf32\0utf32be\0\0\300"
-"ucs4le\0utf32le\0\0\303"
-"ascii\0usascii\0iso646\0iso646us\0\0\307"
-"eucjp\0\0\320"
-"shiftjis\0sjis\0\0\321"
-"gb18030\0\0\330"
-"gbk\0\0\331"
-"gb2312\0\0\332"
-"big5\0bigfive\0cp950\0big5hkscs\0\0\340"
-"euckr\0ksc5601\0ksx1001\0cp949\0\0\350"
+    "utf8\0char\0\0\310"
+    "wchart\0\0\306"
+    "ucs2\0ucs2be\0\0\304"
+    "ucs2le\0\0\305"
+    "utf16\0utf16be\0\0\302"
+    "utf16le\0\0\301"
+    "ucs4\0ucs4be\0utf32\0utf32be\0\0\300"
+    "ucs4le\0utf32le\0\0\303"
+    "ascii\0usascii\0iso646\0iso646us\0\0\307"
+    "eucjp\0\0\320"
+    "shiftjis\0sjis\0\0\321"
+    "gb18030\0\0\330"
+    "gbk\0\0\331"
+    "gb2312\0\0\332"
+    "big5\0bigfive\0cp950\0big5hkscs\0\0\340"
+    "euckr\0ksc5601\0ksx1001\0cp949\0\0\350"
 #include "codepages.h"
-;
+    ;
 
 static const unsigned short legacy_chars[] = {
 #include "legacychars.h"
 };
 
 static const unsigned short jis0208[84][94] = {
 #include "jis0208.h"
 };
 
 static const unsigned short gb18030[126][190] = {
 #include "gb18030.h"
 };
 
 static const unsigned short big5[89][157] = {
 #include "big5.h"
 };
 
 static const unsigned short hkscs[] = {
 #include "hkscs.h"
 };
 
 static const unsigned short ksc[93][94] = {
 #include "ksc.h"
 };
 
-static int fuzzycmp(const unsigned char *a, const unsigned char *b)
-{
-        for (; *a && *b; a++, b++) {
-                while (*a && (*a|32U)-'a'>26 && *a-'0'>10U) a++;
-                if ((*a|32U) != *b) return 1;
-        }
-        return *a != *b;
-}
-
-static size_t find_charmap(const void *name)
-{
-        const unsigned char *s;
-        if (!*(char *)name) name=charmaps; /* "utf8" */
-        for (s=charmaps; *s; ) {
-                if (!fuzzycmp(name, s)) {
-                        for (; *s; s+=strlen((void *)s)+1);
-                        return s+1-charmaps;
-                }
-                s += strlen((void *)s)+1;
-                if (!*s) {
-                        if (s[1] > 0200) s+=2;
-                        else s+=2+(128U-s[1])/4*5;
-                }
-        }
-        return -1;
-}
-
-iconv_t iconv_open(const char *to, const char *from)
-{
-        size_t f, t;
-
-        if ((t = find_charmap(to))==-1
-         || (f = find_charmap(from))==-1
-         || (charmaps[t] >= 0320)) {
-                errno = EINVAL;
-                return (iconv_t)-1;
-        }
-
-        return (void *)(f<<16 | t);
-}
-
-int iconv_close(iconv_t cd)
-{
-        return 0;
-}
-
-static unsigned get_16(const unsigned char *s, int e)
-{
-        e &= 1;
-        return s[e]<<8 | s[1-e];
-}
-
-static void put_16(unsigned char *s, unsigned c, int e)
-{
-        e &= 1;
-        s[e] = c>>8;
-        s[1-e] = c;
-}
-
-static unsigned get_32(const unsigned char *s, int e)
-{
-        e &= 3;
-        return ((unsigned)s[e])<<24 | s[e^1]<<16 | s[e^2]<<8 | s[e^3];
-}
-
-static void put_32(unsigned char *s, unsigned c, int e)
-{
-        e &= 3;
-        s[e^0] = c>>24;
-        s[e^1] = c>>16;
-        s[e^2] = c>>8;
-        s[e^3] = c;
+static int fuzzycmp(const unsigned char* a, const unsigned char* b) {
+  for (; *a && *b; a++, b++) {
+    while (*a && (*a | 32U) - 'a' > 26 && *a - '0' > 10U)
+      a++;
+    if ((*a | 32U) != *b)
+      return 1;
+  }
+  return *a != *b;
+}
+
+static size_t find_charmap(const void* name) {
+  const unsigned char* s;
+  if (!*(char*)name)
+    name = charmaps; /* "utf8" */
+  for (s = charmaps; *s;) {
+    if (!fuzzycmp(name, s)) {
+      for (; *s; s += strlen((void*)s) + 1)
+        ;
+      return s + 1 - charmaps;
+    }
+    s += strlen((void*)s) + 1;
+    if (!*s) {
+      if (s[1] > 0200)
+        s += 2;
+      else
+        s += 2 + (128U - s[1]) / 4 * 5;
+    }
+  }
+  return -1;
+}
+
+iconv_t iconv_open(const char* to, const char* from) {
+  size_t f, t;
+
+  if ((t = find_charmap(to)) == -1 || (f = find_charmap(from)) == -1 ||
+      (charmaps[t] >= 0320)) {
+    errno = EINVAL;
+    return (iconv_t)-1;
+  }
+
+  return (void*)(f << 16 | t);
+}
+
+int iconv_close(iconv_t cd) {
+  return 0;
+}
+
+static unsigned get_16(const unsigned char* s, int e) {
+  e &= 1;
+  return s[e] << 8 | s[1 - e];
+}
+
+static void put_16(unsigned char* s, unsigned c, int e) {
+  e &= 1;
+  s[e] = c >> 8;
+  s[1 - e] = c;
+}
+
+static unsigned get_32(const unsigned char* s, int e) {
+  e &= 3;
+  return ((unsigned)s[e]) << 24 | s[e ^ 1] << 16 | s[e ^ 2] << 8 | s[e ^ 3];
+}
+
+static void put_32(unsigned char* s, unsigned c, int e) {
+  e &= 3;
+  s[e ^ 0] = c >> 24;
+  s[e ^ 1] = c >> 16;
+  s[e ^ 2] = c >> 8;
+  s[e ^ 3] = c;
 }
 
 /* Adapt as needed */
 #define mbrtowc_utf8 mbrtowc
 #define wctomb_utf8 wctomb
 
-size_t iconv(iconv_t cd0, char **restrict in, size_t *restrict inb, char **restrict out, size_t *restrict outb)
-{
-        size_t x=0;
-        unsigned long cd = (unsigned long)cd0;
-        unsigned to = cd & 0xffff;
-        unsigned from = cd >> 16;
-        const unsigned char *map = charmaps+from+1;
-        const unsigned char *tomap = charmaps+to+1;
-        mbstate_t st = {0};
-        wchar_t wc;
-        unsigned c, d;
-        size_t k, l;
-        int err;
-        unsigned char type = map[-1];
-        unsigned char totype = tomap[-1];
-        locale_t *ploc = &CURRENT_LOCALE, loc = *ploc;
-
-        if (!in || !*in || !*inb) return 0;
-
-        *ploc = UTF8_LOCALE;
-
-        for (; *inb; *in+=l, *inb-=l) {
-                c = *(unsigned char *)*in;
-                l = 1;
-
-                if (c >= 128 || type-UTF_32BE < 7U) switch (type) {
-                case UTF_8:
-                        l = mbrtowc_utf8(&wc, *in, *inb, &st);
-                        if (!l) l++;
-                        else if (l == (size_t)-1) goto ilseq;
-                        else if (l == (size_t)-2) goto starved;
-                        c = wc;
-                        break;
-                case US_ASCII:
-                        goto ilseq;
-                case WCHAR_T:
-                        l = sizeof(wchar_t);
-                        if (*inb < l) goto starved;
-                        c = *(wchar_t *)*in;
-                        if (0) {
-                case UTF_32BE:
-                case UTF_32LE:
-                        l = 4;
-                        if (*inb < 4) goto starved;
-                        c = get_32((void *)*in, type);
-                        }
-                        if (c-0xd800u < 0x800u || c >= 0x110000u) goto ilseq;
-                        break;
-                case UCS2BE:
-                case UCS2LE:
-                case UTF_16BE:
-                case UTF_16LE:
-                        l = 2;
-                        if (*inb < 2) goto starved;
-                        c = get_16((void *)*in, type);
-                        if ((unsigned)(c-0xdc00) < 0x400) goto ilseq;
-                        if ((unsigned)(c-0xd800) < 0x400) {
-                                if (type-UCS2BE < 2U) goto ilseq;
-                                l = 4;
-                                if (*inb < 4) goto starved;
-                                d = get_16((void *)(*in + 2), type);
-                                if ((unsigned)(d-0xdc00) >= 0x400) goto ilseq;
-                                c = ((c-0xd7c0)<<10) + (d-0xdc00);
-                        }
-                        break;
-                case SHIFT_JIS:
-                        if (c-0xa1 <= 0xdf-0xa1) {
-                                c += 0xff61-0xa1;
-                                break;
-                        }
-                        l = 2;
-                        if (*inb < 2) goto starved;
-                        d = *((unsigned char *)*in + 1);
-                        if (c-129 <= 159-129) c -= 129;
-                        else if (c-224 <= 239-224) c -= 193;
-                        else goto ilseq;
-                        c *= 2;
-                        if (d-64 <= 158-64) {
-                                if (d==127) goto ilseq;
-                                if (d>127) d--;
-                                d -= 64;
-                        } else if (d-159 <= 252-159) {
-                                c++;
-                                d -= 159;
-                        }
-                        c = jis0208[c][d];
-                        if (!c) goto ilseq;
-                        break;
-                case EUC_JP:
-                        l = 2;
-                        if (*inb < 2) goto starved;
-                        d = *((unsigned char *)*in + 1);
-                        if (c==0x8e) {
-                                c = d;
-                                if (c-0xa1 > 0xdf-0xa1) goto ilseq;
-                                c += 0xff61 - 0xa1;
-                                break;
-                        }
-                        c -= 0xa1;
-                        d -= 0xa1;
-                        if (c >= 84 || d >= 94) goto ilseq;
-                        c = jis0208[c][d];
-                        if (!c) goto ilseq;
-                        break;
-                case GB2312:
-                        if (c < 0xa1) goto ilseq;
-                case GBK:
-                case GB18030:
-                        c -= 0x81;
-                        if (c >= 126) goto ilseq;
-                        l = 2;
-                        if (*inb < 2) goto starved;
-                        d = *((unsigned char *)*in + 1);
-                        if (d < 0xa1 && type == GB2312) goto ilseq;
-                        if (d-0x40>=191 || d==127) {
-                                if (d-'0'>9 || type != GB18030)
-                                        goto ilseq;
-                                l = 4;
-                                if (*inb < 4) goto starved;
-                                c = (10*c + d-'0') * 1260;
-                                d = *((unsigned char *)*in + 2);
-                                if (d-0x81>126) goto ilseq;
-                                c += 10*(d-0x81);
-                                d = *((unsigned char *)*in + 3);
-                                if (d-'0'>9) goto ilseq;
-                                c += d-'0';
-                                c += 128;
-                                for (d=0; d<=c; ) {
-                                        k = 0;
-                                        for (int i=0; i<126; i++)
-                                                for (int j=0; j<190; j++)
-                                                        if (gb18030[i][j]-d <= c-d)
-                                                                k++;
-                                        d = c+1;
-                                        c += k;
-                                }
-                                break;
-                        }
-                        d -= 0x40;
-                        if (d>63) d--;
-                        c = gb18030[c][d];
-                        break;
-                case BIG5:
-                        l = 2;
-                        if (*inb < 2) goto starved;
-                        d = *((unsigned char *)*in + 1);
-                        if (d-0x40>=0xff-0x40 || d-0x7f<0xa1-0x7f) goto ilseq;
-                        d -= 0x40;
-                        if (d > 0x3e) d -= 0x22;
-                        if (c-0xa1>=0xfa-0xa1) {
-                                if (c-0x87>=0xff-0x87) goto ilseq;
-                                if (c < 0xa1) c -= 0x87;
-                                else c -= 0x87 + (0xfa-0xa1);
-                                c = (hkscs[4867+(c*157+d)/16]>>(c*157+d)%16)%2<<17
-                                        | hkscs[c*157+d];
-                                /* A few HKSCS characters map to pairs of UCS
-                                 * characters. These are mapped to surrogate
-                                 * range in the hkscs table then hard-coded
-                                 * here. Ugly, yes. */
-                                if (c/256 == 0xdc) {
-                                        if (totype-0300U > 8) k = 2;
-                                        else k = "\10\4\4\10\4\4\10\2\4"[totype-0300];
-                                        if (k > *outb) goto toobig;
-                                        x += iconv((iconv_t)(uintptr_t)to,
-                                                &(char *){&"\303\212\314\204"
-                                                "\303\212\314\214"
-                                                "\303\252\314\204"
-                                                "\303\252\314\214"
-                                                [c%256]}, &(size_t){4},
-                                                out, outb);
-                                        continue;
-                                }
-                                if (!c) goto ilseq;
-                                break;
-                        }
-                        c -= 0xa1;
-                        c = big5[c][d]|(c==0x27&&(d==0x3a||d==0x3c||d==0x42))<<17;
-                        if (!c) goto ilseq;
-                        break;
-                case EUC_KR:
-                        l = 2;
-                        if (*inb < 2) goto starved;
-                        d = *((unsigned char *)*in + 1);
-                        c -= 0xa1;
-                        d -= 0xa1;
-                        if (c >= 93 || d >= 94) {
-                                c += (0xa1-0x81);
-                                d += 0xa1;
-                                if (c >= 93 || (c>=0xc6-0x81 && d>0x52))
-                                        goto ilseq;
-                                if (d-'A'<26) d = d-'A';
-                                else if (d-'a'<26) d = d-'a'+26;
-                                else if (d-0x81<0xff-0x81) d = d-0x81+52;
-                                else goto ilseq;
-                                if (c < 0x20) c = 178*c + d;
-                                else c = 178*0x20 + 84*(c-0x20) + d;
-                                c += 0xac00;
-                                for (d=0xac00; d<=c; ) {
-                                        k = 0;
-                                        for (int i=0; i<93; i++)
-                                                for (int j=0; j<94; j++)
-                                                        if (ksc[i][j]-d <= c-d)
-                                                                k++;
-                                        d = c+1;
-                                        c += k;
-                                }
-                                break;
-                        }
-                        c = ksc[c][d];
-                        if (!c) goto ilseq;
-                        break;
-                default:
-                        if (c < 128+type) break;
-                        c -= 128+type;
-                        c = legacy_chars[ (map[c*5/4]>>(2*c%8)) |
-                                ((map[c*5/4+1]<<(8-2*c%8)) & 1023) ];
-                        if (!c) c = *(unsigned char *)*in;
-                        if (c==1) goto ilseq;
-                }
-
-                switch (totype) {
-                case WCHAR_T:
-                        if (*outb < sizeof(wchar_t)) goto toobig;
-                        *(wchar_t *)*out = c;
-                        *out += sizeof(wchar_t);
-                        *outb -= sizeof(wchar_t);
-                        break;
-                case UTF_8:
-                        if (*outb < 4) {
-                                char tmp[4];
-                                k = wctomb_utf8(tmp, c);
-                                if (*outb < k) goto toobig;
-                                memcpy(*out, tmp, k);
-                        } else k = wctomb_utf8(*out, c);
-                        *out += k;
-                        *outb -= k;
-                        break;
-                case US_ASCII:
-                        if (c > 0x7f) subst: x++, c='*';
-                default:
-                        if (*outb < 1) goto toobig;
-                        if (c < 128+totype) {
-                        revout:
-                                *(*out)++ = c;
-                                *outb -= 1;
-                                break;
-                        }
-                        d = c;
-                        for (c=0; c<128-totype; c++) {
-                                if (d == legacy_chars[ (tomap[c*5/4]>>(2*c%8)) |
-                                        ((tomap[c*5/4+1]<<(8-2*c%8)) & 1023) ]) {
-                                        c += 128;
-                                        goto revout;
-                                }
-                        }
-                        goto subst;
-                case UCS2BE:
-                case UCS2LE:
-                case UTF_16BE:
-                case UTF_16LE:
-                        if (c < 0x10000 || type-UCS2BE < 2U) {
-                                if (c >= 0x10000) c = 0xFFFD;
-                                if (*outb < 2) goto toobig;
-                                put_16((void *)*out, c, totype);
-                                *out += 2;
-                                *outb -= 2;
-                                break;
-                        }
-                        if (*outb < 4) goto toobig;
-                        c -= 0x10000;
-                        put_16((void *)*out, (c>>10)|0xd800, totype);
-                        put_16((void *)(*out + 2), (c&0x3ff)|0xdc00, totype);
-                        *out += 4;
-                        *outb -= 4;
-                        break;
-                case UTF_32BE:
-                case UTF_32LE:
-                        if (*outb < 4) goto toobig;
-                        put_32((void *)*out, c, totype);
-                        *out += 4;
-                        *outb -= 4;
-                        break;
-                }
-        }
-        *ploc = loc;
-        return x;
+size_t iconv(iconv_t cd0,
+             char** restrict in,
+             size_t* restrict inb,
+             char** restrict out,
+             size_t* restrict outb) {
+  size_t x = 0;
+  unsigned long cd = (unsigned long)cd0;
+  unsigned to = cd & 0xffff;
+  unsigned from = cd >> 16;
+  const unsigned char* map = charmaps + from + 1;
+  const unsigned char* tomap = charmaps + to + 1;
+  mbstate_t st = {0};
+  wchar_t wc;
+  unsigned c, d;
+  size_t k, l;
+  int err;
+  unsigned char type = map[-1];
+  unsigned char totype = tomap[-1];
+  locale_t *ploc = &CURRENT_LOCALE, loc = *ploc;
+
+  if (!in || !*in || !*inb)
+    return 0;
+
+  *ploc = UTF8_LOCALE;
+
+  for (; *inb; *in += l, *inb -= l) {
+    c = *(unsigned char*)*in;
+    l = 1;
+
+    if (c >= 128 || type - UTF_32BE < 7U)
+      switch (type) {
+        case UTF_8:
+          l = mbrtowc_utf8(&wc, *in, *inb, &st);
+          if (!l)
+            l++;
+          else if (l == (size_t)-1)
+            goto ilseq;
+          else if (l == (size_t)-2)
+            goto starved;
+          c = wc;
+          break;
+        case US_ASCII:
+          goto ilseq;
+        case WCHAR_T:
+          l = sizeof(wchar_t);
+          if (*inb < l)
+            goto starved;
+          c = *(wchar_t*)*in;
+          if (0) {
+            case UTF_32BE:
+            case UTF_32LE:
+              l = 4;
+              if (*inb < 4)
+                goto starved;
+              c = get_32((void*)*in, type);
+          }
+          if (c - 0xd800u < 0x800u || c >= 0x110000u)
+            goto ilseq;
+          break;
+        case UCS2BE:
+        case UCS2LE:
+        case UTF_16BE:
+        case UTF_16LE:
+          l = 2;
+          if (*inb < 2)
+            goto starved;
+          c = get_16((void*)*in, type);
+          if ((unsigned)(c - 0xdc00) < 0x400)
+            goto ilseq;
+          if ((unsigned)(c - 0xd800) < 0x400) {
+            if (type - UCS2BE < 2U)
+              goto ilseq;
+            l = 4;
+            if (*inb < 4)
+              goto starved;
+            d = get_16((void*)(*in + 2), type);
+            if ((unsigned)(d - 0xdc00) >= 0x400)
+              goto ilseq;
+            c = ((c - 0xd7c0) << 10) + (d - 0xdc00);
+          }
+          break;
+        case SHIFT_JIS:
+          if (c - 0xa1 <= 0xdf - 0xa1) {
+            c += 0xff61 - 0xa1;
+            break;
+          }
+          l = 2;
+          if (*inb < 2)
+            goto starved;
+          d = *((unsigned char*)*in + 1);
+          if (c - 129 <= 159 - 129)
+            c -= 129;
+          else if (c - 224 <= 239 - 224)
+            c -= 193;
+          else
+            goto ilseq;
+          c *= 2;
+          if (d - 64 <= 158 - 64) {
+            if (d == 127)
+              goto ilseq;
+            if (d > 127)
+              d--;
+            d -= 64;
+          } else if (d - 159 <= 252 - 159) {
+            c++;
+            d -= 159;
+          }
+          c = jis0208[c][d];
+          if (!c)
+            goto ilseq;
+          break;
+        case EUC_JP:
+          l = 2;
+          if (*inb < 2)
+            goto starved;
+          d = *((unsigned char*)*in + 1);
+          if (c == 0x8e) {
+            c = d;
+            if (c - 0xa1 > 0xdf - 0xa1)
+              goto ilseq;
+            c += 0xff61 - 0xa1;
+            break;
+          }
+          c -= 0xa1;
+          d -= 0xa1;
+          if (c >= 84 || d >= 94)
+            goto ilseq;
+          c = jis0208[c][d];
+          if (!c)
+            goto ilseq;
+          break;
+        case GB2312:
+          if (c < 0xa1)
+            goto ilseq;
+        case GBK:
+        case GB18030:
+          c -= 0x81;
+          if (c >= 126)
+            goto ilseq;
+          l = 2;
+          if (*inb < 2)
+            goto starved;
+          d = *((unsigned char*)*in + 1);
+          if (d < 0xa1 && type == GB2312)
+            goto ilseq;
+          if (d - 0x40 >= 191 || d == 127) {
+            if (d - '0' > 9 || type != GB18030)
+              goto ilseq;
+            l = 4;
+            if (*inb < 4)
+              goto starved;
+            c = (10 * c + d - '0') * 1260;
+            d = *((unsigned char*)*in + 2);
+            if (d - 0x81 > 126)
+              goto ilseq;
+            c += 10 * (d - 0x81);
+            d = *((unsigned char*)*in + 3);
+            if (d - '0' > 9)
+              goto ilseq;
+            c += d - '0';
+            c += 128;
+            for (d = 0; d <= c;) {
+              k = 0;
+              for (int i = 0; i < 126; i++)
+                for (int j = 0; j < 190; j++)
+                  if (gb18030[i][j] - d <= c - d)
+                    k++;
+              d = c + 1;
+              c += k;
+            }
+            break;
+          }
+          d -= 0x40;
+          if (d > 63)
+            d--;
+          c = gb18030[c][d];
+          break;
+        case BIG5:
+          l = 2;
+          if (*inb < 2)
+            goto starved;
+          d = *((unsigned char*)*in + 1);
+          if (d - 0x40 >= 0xff - 0x40 || d - 0x7f < 0xa1 - 0x7f)
+            goto ilseq;
+          d -= 0x40;
+          if (d > 0x3e)
+            d -= 0x22;
+          if (c - 0xa1 >= 0xfa - 0xa1) {
+            if (c - 0x87 >= 0xff - 0x87)
+              goto ilseq;
+            if (c < 0xa1)
+              c -= 0x87;
+            else
+              c -= 0x87 + (0xfa - 0xa1);
+            c = (hkscs[4867 + (c * 157 + d) / 16] >> (c * 157 + d) % 16) % 2
+                    << 17 |
+                hkscs[c * 157 + d];
+            /* A few HKSCS characters map to pairs of UCS
+             * characters. These are mapped to surrogate
+             * range in the hkscs table then hard-coded
+             * here. Ugly, yes. */
+            if (c / 256 == 0xdc) {
+              if (totype - 0300U > 8)
+                k = 2;
+              else
+                k = "\10\4\4\10\4\4\10\2\4"[totype - 0300];
+              if (k > *outb)
+                goto toobig;
+              x += iconv((iconv_t)(uintptr_t)to,
+                         &(char*){&"\303\212\314\204"
+                                   "\303\212\314\214"
+                                   "\303\252\314\204"
+                                   "\303\252\314\214"[c % 256]},
+                         &(size_t){4}, out, outb);
+              continue;
+            }
+            if (!c)
+              goto ilseq;
+            break;
+          }
+          c -= 0xa1;
+          c = big5[c][d] |
+              (c == 0x27 && (d == 0x3a || d == 0x3c || d == 0x42)) << 17;
+          if (!c)
+            goto ilseq;
+          break;
+        case EUC_KR:
+          l = 2;
+          if (*inb < 2)
+            goto starved;
+          d = *((unsigned char*)*in + 1);
+          c -= 0xa1;
+          d -= 0xa1;
+          if (c >= 93 || d >= 94) {
+            c += (0xa1 - 0x81);
+            d += 0xa1;
+            if (c >= 93 || (c >= 0xc6 - 0x81 && d > 0x52))
+              goto ilseq;
+            if (d - 'A' < 26)
+              d = d - 'A';
+            else if (d - 'a' < 26)
+              d = d - 'a' + 26;
+            else if (d - 0x81 < 0xff - 0x81)
+              d = d - 0x81 + 52;
+            else
+              goto ilseq;
+            if (c < 0x20)
+              c = 178 * c + d;
+            else
+              c = 178 * 0x20 + 84 * (c - 0x20) + d;
+            c += 0xac00;
+            for (d = 0xac00; d <= c;) {
+              k = 0;
+              for (int i = 0; i < 93; i++)
+                for (int j = 0; j < 94; j++)
+                  if (ksc[i][j] - d <= c - d)
+                    k++;
+              d = c + 1;
+              c += k;
+            }
+            break;
+          }
+          c = ksc[c][d];
+          if (!c)
+            goto ilseq;
+          break;
+        default:
+          if (c < 128 + type)
+            break;
+          c -= 128 + type;
+          c = legacy_chars[(map[c * 5 / 4] >> (2 * c % 8)) |
+                           ((map[c * 5 / 4 + 1] << (8 - 2 * c % 8)) & 1023)];
+          if (!c)
+            c = *(unsigned char*)*in;
+          if (c == 1)
+            goto ilseq;
+      }
+
+    switch (totype) {
+      case WCHAR_T:
+        if (*outb < sizeof(wchar_t))
+          goto toobig;
+        *(wchar_t*)*out = c;
+        *out += sizeof(wchar_t);
+        *outb -= sizeof(wchar_t);
+        break;
+      case UTF_8:
+        if (*outb < 4) {
+          char tmp[4];
+          k = wctomb_utf8(tmp, c);
+          if (*outb < k)
+            goto toobig;
+          memcpy(*out, tmp, k);
+        } else
+          k = wctomb_utf8(*out, c);
+        *out += k;
+        *outb -= k;
+        break;
+      case US_ASCII:
+        if (c > 0x7f)
+        subst:
+        x++, c = '*';
+      default:
+        if (*outb < 1)
+          goto toobig;
+        if (c < 128 + totype) {
+        revout:
+          *(*out)++ = c;
+          *outb -= 1;
+          break;
+        }
+        d = c;
+        for (c = 0; c < 128 - totype; c++) {
+          if (d == legacy_chars[(tomap[c * 5 / 4] >> (2 * c % 8)) |
+                                ((tomap[c * 5 / 4 + 1] << (8 - 2 * c % 8)) &
+                                 1023)]) {
+            c += 128;
+            goto revout;
+          }
+        }
+        goto subst;
+      case UCS2BE:
+      case UCS2LE:
+      case UTF_16BE:
+      case UTF_16LE:
+        if (c < 0x10000 || type - UCS2BE < 2U) {
+          if (c >= 0x10000)
+            c = 0xFFFD;
+          if (*outb < 2)
+            goto toobig;
+          put_16((void*)*out, c, totype);
+          *out += 2;
+          *outb -= 2;
+          break;
+        }
+        if (*outb < 4)
+          goto toobig;
+        c -= 0x10000;
+        put_16((void*)*out, (c >> 10) | 0xd800, totype);
+        put_16((void*)(*out + 2), (c & 0x3ff) | 0xdc00, totype);
+        *out += 4;
+        *outb -= 4;
+        break;
+      case UTF_32BE:
+      case UTF_32LE:
+        if (*outb < 4)
+          goto toobig;
+        put_32((void*)*out, c, totype);
+        *out += 4;
+        *outb -= 4;
+        break;
+    }
+  }
+  *ploc = loc;
+  return x;
 ilseq:
-        err = EILSEQ;
-        x = -1;
-        goto end;
+  err = EILSEQ;
+  x = -1;
+  goto end;
 toobig:
-        err = E2BIG;
-        x = -1;
-        goto end;
+  err = E2BIG;
+  x = -1;
+  goto end;
 starved:
-        err = EINVAL;
-        x = -1;
+  err = EINVAL;
+  x = -1;
 end:
-        errno = err;
-        *ploc = loc;
-        return x;
-}
+  errno = err;
+  *ploc = loc;
+  return x;
+}