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-rw-r--r--iconvdata/euckr.c377
1 files changed, 122 insertions, 255 deletions
diff --git a/iconvdata/euckr.c b/iconvdata/euckr.c
index 2ad9478729..50e4b40838 100644
--- a/iconvdata/euckr.c
+++ b/iconvdata/euckr.c
@@ -1,7 +1,8 @@
 /* Mapping tables for EUC-KR handling.
    Copyright (C) 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Jungshik Shin <jshin@pantheon.yale.edu>, 1998.
+   Contributed by Jungshik Shin <jshin@pantheon.yale.edu>
+   and Ulrich Drepper <drepper@cygnus.com>, 1998.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public License as
@@ -18,276 +19,142 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <gconv.h>
 #include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <wchar.h>
 #include <ksc5601.h>
 
-/* Direction of the transformation.  */
-static int to_euckr_object;
-static int from_euckr_object;
-
 
 static inline void
-euckr_from_ucs4(wchar_t ch, unsigned char *cp)
+euckr_from_ucs4 (uint32_t ch, unsigned char *cp)
 {
   if (ch > 0x7f)
     {
-      uint16_t idx=0;
+      uint16_t idx = 0;
 
       if (ucs4_to_ksc5601 (ch, &idx))
 	idx |= 0x8080;
 
-      *cp = (unsigned char) (idx/256);
-      *(cp+1) = (unsigned char) (idx & 0xff) ;
+      cp[0] = (unsigned char) (idx / 256);
+      cp[1] = (unsigned char) (idx & 0xff);
     }
-  /* think about 0x5c ; '\' */
+  /* XXX Think about 0x5c ; '\'.  */
   else
     {
-      *cp = (unsigned char) (0x7f & ch) ;
-      *(cp+1) = (unsigned char) 0;
+      cp[0] = (unsigned char) ch;
+      cp[1] = '\0';
     }
 }
 
 
-int
-gconv_init (struct gconv_step *step)
-{
-  /* Determine which direction.  */
-  if (strcasestr (step->from_name, "EUC-KR") != NULL)
-    step->data = &from_euckr_object;
-  else if (strcasestr (step->to_name, "EUC-KR") != NULL)
-    step->data = &to_euckr_object;
-  else
-    return GCONV_NOCONV;
-
-  return GCONV_OK;
-}
-
-
-void
-gconv_end (struct gconv_step *data)
-{
-  /* Nothing to do.  */
-}
-
-
-int
-gconv (struct gconv_step *step, struct gconv_step_data *data,
-       const char *inbuf, size_t *inbufsize, size_t *written, int do_flush)
-{
-  struct gconv_step *next_step = step + 1;
-  struct gconv_step_data *next_data = data + 1;
-  gconv_fct fct = next_step->fct;
-  size_t do_write;
-  int result;
-
-  /* If the function is called with no input this means we have to reset
-     to the initial state.  The possibly partly converted input is
-     dropped.  */
-  if (do_flush)
-    {
-      do_write = 0;
-
-      /* Call the steps down the chain if there are any.  */
-      if (data->is_last)
-	result = GCONV_OK;
-      else
-	{
-	  struct gconv_step *next_step = step + 1;
-	  struct gconv_step_data *next_data = data + 1;
-
-	  result = (*fct) (next_step, next_data, NULL, 0, written, 1);
-
-	  /* Clear output buffer.  */
-	  data->outbufavail = 0;
-	}
-    }
-  else
-    {
-      do_write = 0;
-
-      do
-	{
-	  result = GCONV_OK;
-
-	  if (step->data == &from_euckr_object)
-	    {
-	      size_t inchars = *inbufsize;
-	      size_t outwchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-
-	      while (cnt < inchars
-		     && (outwchars + sizeof (wchar_t) <= data->outbufsize))
-		{
-		  int inchar = (unsigned char) inbuf[cnt];
-		  wchar_t ch;
-
-		  /*
-		    half-width Korean Currency WON sign
-
-		    if (inchar == 0x5c)
-		      ch =  0x20a9;
-		    else if (inchar <= 0x7f)
-		      ch = (wchar_t) inchar;
-		  */
-
-		  if (inchar <= 0x7f)
-		    ch = (wchar_t) inchar;
-
-
-/* 0xfe(->0x7e : row 94) and 0xc9(->0x59 : row 41) are user-defined areas */
-
-                  else if ( inchar <= 0xa0 || inchar > 0xfe || inchar == 0xc9)
-                      /* This is illegal.  */
-                      ch = L'\0';
-		  else
-		    {
-		      /* Two-byte character.  First test whether the next
-			 character is also available.  */
-		      int inchar2;
-
-		      if (cnt + 1 >= inchars)
-			{
-			  /* The second character is not available.  Store
-			     the intermediate result.  */
-			  result = GCONV_INCOMPLETE_INPUT;
-			  break;
-			}
-
-		      inchar2 = (unsigned char) inbuf[++cnt];
-
-		      ch = ksc5601_to_ucs4 ((uint16_t) (inchar * 256 + inchar2)
-					    & 0x7f7f);
-		      if (ch == UNKNOWN_10646_CHAR)
-                         ch = L'\0';
-
-		      if (ch == L'\0')
-			--cnt;
-		    }
-
-		  if (ch == L'\0' && inbuf[cnt] != '\0')
-		    {
-		      /* This is an illegal character.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-
-		  *((wchar_t *) (outbuf + outwchars)) = ch;
-		  ++do_write;
-		  outwchars += sizeof (wchar_t);
-		  ++cnt;
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outwchars;
-	    }
-	  else
-	    {
-	      size_t inwchars = *inbufsize;
-	      size_t outchars = data->outbufavail;
-	      char *outbuf = data->outbuf;
-	      size_t cnt = 0;
-	      int extra = 0;
-
-	      while (inwchars >= cnt + sizeof (wchar_t)
-		     && outchars < data->outbufsize)
-		{
-		  wchar_t ch = *((wchar_t *) (inbuf + cnt));
-		  unsigned char cp[2];
-
-/* decomposing Hangul syllables not available in KS C 5601 into Jamos
-   should be considered either here or in euckr_from_ucs4() */
-
-                  euckr_from_ucs4(ch,cp) ;
-
-		  if (cp[0] == '\0' && ch != 0)
-		    /* Illegal character.  */
-		    break;
-
-		  outbuf[outchars] = cp[0];
-		  /* Now test for a possible second byte and write this
-		     if possible.  */
-		  if (cp[1] != '\0')
-		    {
-		      if (outchars + 1 >= data->outbufsize)
-			{
-			  /* The result does not fit into the buffer.  */
-			  extra = 1;
-			  break;
-			}
-		      outbuf[++outchars] = cp[1];
-		    }
-
-		  ++do_write;
-		  ++outchars;
-		  cnt += sizeof (wchar_t);
-		}
-	      *inbufsize -= cnt;
-	      inbuf += cnt;
-	      data->outbufavail = outchars;
-
-	      if (outchars + extra < data->outbufsize)
-		{
-		  /* If there is still room in the output buffer something
-		     is wrong with the input.  */
-		  if (inwchars >= cnt + sizeof (wchar_t))
-		    {
-		      /* An error occurred.  */
-		      result = GCONV_ILLEGAL_INPUT;
-		      break;
-		    }
-		  if (inwchars != cnt)
-		    {
-		      /* There are some unprocessed bytes at the end of the
-			 input buffer.  */
-		      result = GCONV_INCOMPLETE_INPUT;
-		      break;
-		    }
-		}
-	    }
-
-	  if (result != GCONV_OK)
-	    break;
-
-	  if (data->is_last)
-	    {
-	      /* This is the last step.  */
-	      result = (*inbufsize > (step->data == &from_euckr_object
-				      ? 0 : sizeof (wchar_t) - 1)
-			? GCONV_FULL_OUTPUT : GCONV_EMPTY_INPUT);
-	      break;
-	    }
-
-	  /* Status so far.  */
-	  result = GCONV_EMPTY_INPUT;
-
-	  if (data->outbufavail > 0)
-	    {
-	      /* Call the functions below in the chain.  */
-	      size_t newavail = data->outbufavail;
-
-	      result = (*fct) (next_step, next_data, data->outbuf, &newavail,
-			       written, 0);
-
-	      /* Correct the output buffer.  */
-	      if (newavail != data->outbufavail && newavail > 0)
-		{
-		  memmove (data->outbuf,
-			   &data->outbuf[data->outbufavail - newavail],
-			   newavail);
-		  data->outbufavail = newavail;
-		}
-	    }
-	}
-      while (*inbufsize > 0 && result == GCONV_EMPTY_INPUT);
-    }
-
-  if (written != NULL && data->is_last)
-    *written = do_write;
-
-  return result;
-}
+/* Definitions used in the body of the `gconv' function.  */
+#define CHARSET_NAME		"EUC-KR"
+#define FROM_LOOP		from_euc_kr
+#define TO_LOOP			to_euc_kr
+#define DEFINE_INIT		1
+#define DEFINE_FINI		1
+#define MIN_NEEDED_FROM		1
+#define MAX_NEEDED_FROM		2
+#define MIN_NEEDED_TO		4
+
+
+/* First define the conversion function from EUC-KR to UCS4.  */
+#define MIN_NEEDED_INPUT	MIN_NEEDED_FROM
+#define MAX_NEEDED_INPUT	MAX_NEEDED_FROM
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_TO
+#define LOOPFCT			FROM_LOOP
+#define BODY \
+  {									      \
+    uint32_t ch = *inptr;						      \
+									      \
+    /* Half-width Korean Currency WON sign				      \
+									      \
+       if (inchar == 0x5c)						      \
+	 ch =  0x20a9;							      \
+       else if (inchar <= 0x7f)						      \
+	 ch = (wchar_t) inchar;						      \
+    */									      \
+									      \
+    if (ch <= 0x7f)							      \
+      /* Plain ASCII.  */						      \
+      ++inptr;								      \
+    /* 0xfe(->0x7e : row 94) and 0xc9(->0x59 : row 41) are		      \
+       user-defined areas.  */						      \
+    else if (ch <= 0xa0 || ch > 0xfe || ch == 0xc9)			      \
+      {									      \
+	/* This is illegal.  */						      \
+	result = GCONV_ILLEGAL_INPUT;					      \
+	break;								      \
+      }									      \
+    else								      \
+      {									      \
+	/* Two-byte character.  First test whether the next character	      \
+	   is also available.  */					      \
+	int ch2;							      \
+									      \
+	if (NEED_LENGTH_TEST && inptr + 1 >= inend)			      \
+	  {								      \
+	    /* The second character is not available.  */		      \
+	    result = GCONV_INCOMPLETE_INPUT;				      \
+	    break;							      \
+	  }								      \
+									      \
+	ch2 = inptr[1];							      \
+									      \
+	if (ch2 < 0xa1 || ch2 >= 0xfe					      \
+	    || ((ch = ksc5601_to_ucs4 ((uint16_t) (ch * 256 + ch2) & 0x7f7f)) \
+		== UNKNOWN_10646_CHAR))					      \
+	  {								      \
+	    /* This is an illegal character.  */			      \
+	    result = GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+									      \
+	inptr += 2;							      \
+      }									      \
+									      \
+    *((uint32_t *) outptr)++ = ch;					      \
+  }
+#include <iconv/loop.c>
+
+
+/* Next, define the other direction.  */
+#define MIN_NEEDED_INPUT	MIN_NEEDED_TO
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_FROM
+#define MAX_NEEDED_OUTPUT	MAX_NEEDED_FROM
+#define LOOPFCT			TO_LOOP
+#define BODY \
+  {									      \
+    uint32_t ch = *((uint32_t *) inptr);				      \
+    unsigned char cp[2];						      \
+									      \
+    /* Decomposing Hangul syllables not available in KS C 5601 into	      \
+       Jamos should be considered either here or in euckr_from_ucs4() */      \
+    euckr_from_ucs4 (ch, cp) ;						      \
+									      \
+    if (cp[0] == '\0' && ch != 0)					      \
+      {									      \
+	/* Illegal character.  */					      \
+	result = GCONV_ILLEGAL_INPUT;					      \
+	break;								      \
+      }									      \
+									      \
+    *outptr++ = cp[0];							      \
+    /* Now test for a possible second byte and write this if possible.  */    \
+    if (cp[1] != '\0')							      \
+      {									      \
+	if (NEED_LENGTH_TEST && outptr >= outend)			      \
+	  {								      \
+	    /* The result does not fit into the buffer.  */		      \
+	    --outptr;							      \
+	    result = GCONV_FULL_OUTPUT;					      \
+	    break;							      \
+	  }								      \
+	*outptr++ = cp[1];						      \
+      }									      \
+									      \
+    inptr += 4;								      \
+  }
+#include <iconv/loop.c>
+
+
+/* Now define the toplevel functions.  */
+#include <iconv/skeleton.c>