Way too much changes - all over.

1 files changed, 319 insertions, 0 deletions

diff --git a/MSVC/iconv/iso2022_cn.h b/MSVC/iconv/iso2022_cn.h
new file mode 100644
index 0000000..4279a85
--- /dev/null
+++ b/MSVC/iconv/iso2022_cn.h
@@ -0,0 +1,319 @@
+/*
+ * Copyright (C) 1999-2001 Free Software Foundation, Inc.
+ * This file is part of the GNU LIBICONV Library.
+ *
+ * The GNU LIBICONV Library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * The GNU LIBICONV Library is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with the GNU LIBICONV Library; see the file COPYING.LIB.
+ * If not, write to the Free Software Foundation, Inc., 59 Temple Place -
+ * Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+/*
+ * ISO-2022-CN
+ */
+
+/* Specification: RFC 1922 */
+
+#define ESC 0x1b
+#define SO  0x0e
+#define SI  0x0f
+
+/*
+ * The state is composed of one of the following values
+ */
+#define STATE_ASCII          0
+#define STATE_TWOBYTE        1
+/*
+ * and one of the following values, << 8
+ */
+#define STATE2_NONE                   0
+#define STATE2_DESIGNATED_GB2312      1
+#define STATE2_DESIGNATED_CNS11643_1  2
+/*
+ * and one of the following values, << 16
+ */
+#define STATE3_NONE                   0
+#define STATE3_DESIGNATED_CNS11643_2  1
+
+#define SPLIT_STATE \
+  unsigned int state1 = state & 0xff, state2 = (state >> 8) & 0xff, state3 = state >> 16
+#define COMBINE_STATE \
+  state = (state3 << 16) | (state2 << 8) | state1
+
+static int
+iso2022_cn_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
+{
+  state_t state = conv->istate;
+  SPLIT_STATE;
+  int count = 0;
+  unsigned char c;
+  for (;;) {
+    c = *s;
+    if (c == ESC) {
+      if (n < count+4)
+        goto none;
+      if (s[1] == '$') {
+        if (s[2] == ')') {
+          if (s[3] == 'A') {
+            state2 = STATE2_DESIGNATED_GB2312;
+            s += 4; count += 4;
+            if (n < count+1)
+              goto none;
+            continue;
+          }
+          if (s[3] == 'G') {
+            state2 = STATE2_DESIGNATED_CNS11643_1;
+            s += 4; count += 4;
+            if (n < count+1)
+              goto none;
+            continue;
+          }
+        }
+        if (s[2] == '*') {
+          if (s[3] == 'H') {
+            state3 = STATE3_DESIGNATED_CNS11643_2;
+            s += 4; count += 4;
+            if (n < count+1)
+              goto none;
+            continue;
+          }
+        }
+      }
+      if (s[1] == 'N') {
+        switch (state3) {
+          case STATE3_NONE:
+            return RET_ILSEQ;
+          case STATE3_DESIGNATED_CNS11643_2:
+            if (s[2] < 0x80 && s[3] < 0x80) {
+              int ret = cns11643_2_mbtowc(conv,pwc,s+2,2);
+              if (ret == RET_ILSEQ)
+                return RET_ILSEQ;
+              if (ret != 2) abort();
+              COMBINE_STATE;
+              conv->istate = state;
+              return count+4;
+            } else
+              return RET_ILSEQ;
+          default: abort();
+        }
+      }
+      return RET_ILSEQ;
+    }
+    if (c == SO) {
+      if (state2 != STATE2_DESIGNATED_GB2312 && state2 != STATE2_DESIGNATED_CNS11643_1)
+        return RET_ILSEQ;
+      state1 = STATE_TWOBYTE;
+      s++; count++;
+      if (n < count+1)
+        goto none;
+      continue;
+    }
+    if (c == SI) {
+      state1 = STATE_ASCII;
+      s++; count++;
+      if (n < count+1)
+        goto none;
+      continue;
+    }
+    break;
+  }
+  switch (state1) {
+    case STATE_ASCII:
+      if (c < 0x80) {
+        int ret = ascii_mbtowc(conv,pwc,s,1);
+        if (ret == RET_ILSEQ)
+          return RET_ILSEQ;
+        if (ret != 1) abort();
+        if (*pwc == 0x000a || *pwc == 0x000d) {
+          state2 = STATE2_NONE; state3 = STATE3_NONE;
+        }
+        COMBINE_STATE;
+        conv->istate = state;
+        return count+1;
+      } else
+        return RET_ILSEQ;
+    case STATE_TWOBYTE:
+      if (n < count+2)
+        goto none;
+      if (s[0] < 0x80 && s[1] < 0x80) {
+        int ret;
+        switch (state2) {
+          case STATE2_NONE:
+            return RET_ILSEQ;
+          case STATE2_DESIGNATED_GB2312:
+            ret = gb2312_mbtowc(conv,pwc,s,2); break;
+          case STATE2_DESIGNATED_CNS11643_1:
+            ret = cns11643_1_mbtowc(conv,pwc,s,2); break;
+          default: abort();
+        }
+        if (ret == RET_ILSEQ)
+          return RET_ILSEQ;
+        if (ret != 2) abort();
+        COMBINE_STATE;
+        conv->istate = state;
+        return count+2;
+      } else
+        return RET_ILSEQ;
+    default: abort();
+  }
+
+none:
+  COMBINE_STATE;
+  conv->istate = state;
+  return RET_TOOFEW(count);
+}
+
+static int
+iso2022_cn_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
+{
+  state_t state = conv->ostate;
+  SPLIT_STATE;
+  unsigned char buf[3];
+  int ret;
+
+  /* There is no need to handle Unicode 3.1 tag characters and to look for
+     "zh-CN" or "zh-TW" tags, because GB2312 and CNS11643 are disjoint. */
+
+  /* Try ASCII. */
+  ret = ascii_wctomb(conv,buf,wc,1);
+  if (ret != RET_ILUNI) {
+    if (ret != 1) abort();
+    if (buf[0] < 0x80) {
+      int count = (state1 == STATE_ASCII ? 1 : 2);
+      if (n < count)
+        return RET_TOOSMALL;
+      if (state1 != STATE_ASCII) {
+        r[0] = SI;
+        r += 1;
+        state1 = STATE_ASCII;
+      }
+      r[0] = buf[0];
+      if (wc == 0x000a || wc == 0x000d) {
+        state2 = STATE2_NONE; state3 = STATE3_NONE;
+      }
+      COMBINE_STATE;
+      conv->ostate = state;
+      return count;
+    }
+  }
+
+  /* Try GB 2312-1980. */
+  ret = gb2312_wctomb(conv,buf,wc,2);
+  if (ret != RET_ILUNI) {
+    if (ret != 2) abort();
+    if (buf[0] < 0x80 && buf[1] < 0x80) {
+      int count = (state2 == STATE2_DESIGNATED_GB2312 ? 0 : 4) + (state1 == STATE_TWOBYTE ? 0 : 1) + 2;
+      if (n < count)
+        return RET_TOOSMALL;
+      if (state2 != STATE2_DESIGNATED_GB2312) {
+        r[0] = ESC;
+        r[1] = '$';
+        r[2] = ')';
+        r[3] = 'A';
+        r += 4;
+        state2 = STATE2_DESIGNATED_GB2312;
+      }
+      if (state1 != STATE_TWOBYTE) {
+        r[0] = SO;
+        r += 1;
+        state1 = STATE_TWOBYTE;
+      }
+      r[0] = buf[0];
+      r[1] = buf[1];
+      COMBINE_STATE;
+      conv->ostate = state;
+      return count;
+    }
+  }
+
+  ret = cns11643_wctomb(conv,buf,wc,3);
+  if (ret != RET_ILUNI) {
+    if (ret != 3) abort();
+
+    /* Try CNS 11643-1992 Plane 1. */
+    if (buf[0] == 1 && buf[1] < 0x80 && buf[2] < 0x80) {
+      int count = (state2 == STATE2_DESIGNATED_CNS11643_1 ? 0 : 4) + (state1 == STATE_TWOBYTE ? 0 : 1) + 2;
+      if (n < count)
+        return RET_TOOSMALL;
+      if (state2 != STATE2_DESIGNATED_CNS11643_1) {
+        r[0] = ESC;
+        r[1] = '$';
+        r[2] = ')';
+        r[3] = 'G';
+        r += 4;
+        state2 = STATE2_DESIGNATED_CNS11643_1;
+      }
+      if (state1 != STATE_TWOBYTE) {
+        r[0] = SO;
+        r += 1;
+        state1 = STATE_TWOBYTE;
+      }
+      r[0] = buf[1];
+      r[1] = buf[2];
+      COMBINE_STATE;
+      conv->ostate = state;
+      return count;
+    }
+
+    /* Try CNS 11643-1992 Plane 2. */
+    if (buf[0] == 2 && buf[1] < 0x80 && buf[2] < 0x80) {
+      int count = (state3 == STATE3_DESIGNATED_CNS11643_2 ? 0 : 4) + 4;
+      if (n < count)
+        return RET_TOOSMALL;
+      if (state3 != STATE3_DESIGNATED_CNS11643_2) {
+        r[0] = ESC;
+        r[1] = '$';
+        r[2] = '*';
+        r[3] = 'H';
+        r += 4;
+        state3 = STATE3_DESIGNATED_CNS11643_2;
+      }
+      r[0] = ESC;
+      r[1] = 'N';
+      r[2] = buf[1];
+      r[3] = buf[2];
+      COMBINE_STATE;
+      conv->ostate = state;
+      return count;
+    }
+  }
+
+  return RET_ILUNI;
+}
+
+static int
+iso2022_cn_reset (conv_t conv, unsigned char *r, int n)
+{
+  state_t state = conv->ostate;
+  SPLIT_STATE;
+  (void)state2;
+  (void)state3;
+  if (state1 != STATE_ASCII) {
+    if (n < 1)
+      return RET_TOOSMALL;
+    r[0] = SI;
+    /* conv->ostate = 0; will be done by the caller */
+    return 1;
+  } else
+    return 0;
+}
+
+#undef COMBINE_STATE
+#undef SPLIT_STATE
+#undef STATE3_DESIGNATED_CNS11643_2
+#undef STATE3_NONE
+#undef STATE2_DESIGNATED_CNS11643_1
+#undef STATE2_DESIGNATED_GB2312
+#undef STATE2_NONE
+#undef STATE_TWOBYTE
+#undef STATE_ASCII