Refactor charset plugins a bit and add CP437 module.

Now all 8-bit charsets with gaps (not all symbols defined) could be produced through
one macro -- SMB_GENERATE_CHARSET_MODULE_8_BIT_GAP(CHARSETNAME) within source file
with three charset tables. Full source code for such modules can be generated by
source/script/gen-8bit-gap.sh script which was taken from GNU libc and changed slightly
to follow our data types and structure.
(This used to be commit 37042c7bc0f349370e93e4bed37d8fa371013247)

1 files changed, 3 insertions, 73 deletions

diff --git a/source3/modules/CP850.c b/source3/modules/CP850.c
index 1805a1e11b..0adfd24def 100644
--- a/source3/modules/CP850.c
+++ b/source3/modules/CP850.c
@@ -2,8 +2,9 @@
  * Conversion table for CP850 charset also known as IBM850.
  *
  * Copyright (C) Alexander Bokovoy		2003
+ *
  * Conversion tables are generated using GNU libc 2.2.5's 
- * localedata/charmaps/IBM850 table and iconvdata/gen-8bit-gap.sh script
+ * localedata/charmaps/IBM850 table and source/script/gen-8bit-gap.sh script
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -22,13 +23,6 @@
 
 #include "includes.h"
 
-struct gap
-{
-  uint16 start;
-  uint16 end;
-  int32 idx;
-};
-
 static const uint16 to_ucs2[256] = {
   [0x01] = 0x0001,
   [0x02] = 0x0002,
@@ -347,69 +341,5 @@ static const unsigned char from_ucs2[] = {
   '\xdb', '\xb0', '\xb1', '\xb2', '\xfe',
 };
 
+SMB_GENERATE_CHARSET_MODULE_8_BIT_GAP(CP850)
 
-static size_t CP850_push(void *cd, char **inbuf, size_t *inbytesleft,
-			 char **outbuf, size_t *outbytesleft)
-{
-	while (*inbytesleft >= 2 && *outbytesleft >= 1) {
-		int i;
-		int done = 0;
-		
-		uint16 ch = SVAL(*inbuf,0);
-		
-		for (i=0; from_idx[i].start != 0xffff; i++) {
-			if ((from_idx[i].start <= ch) && (from_idx[i].end >= ch)) {
-				((unsigned char*)(*outbuf))[0] = from_ucs2[from_idx[i].idx+ch];
-				(*inbytesleft) -= 2;
-				(*outbytesleft) -= 1;
-				(*inbuf)  += 2;
-				(*outbuf) += 1;
-				done = 1;
-				break;
-			}
-		}
-		if (!done) {
-			errno = EINVAL;
-			return -1;
-		}
-		
-	}
-
-	if (*inbytesleft == 1) {
-		errno = EINVAL;
-		return -1;
-	}
-
-	if (*inbytesleft > 1) {
-		errno = E2BIG;
-		return -1;
-	}
-	
-	return 0;
-}
-
-static size_t CP850_pull(void *cd, char **inbuf, size_t *inbytesleft,
-			 char **outbuf, size_t *outbytesleft)
-{
-	while (*inbytesleft >= 1 && *outbytesleft >= 2) {
-		*(uint16*)(*outbuf) = to_ucs2[((unsigned char*)(*inbuf))[0]];
-		(*inbytesleft)  -= 1;
-		(*outbytesleft) -= 2;
-		(*inbuf)  += 1;
-		(*outbuf) += 2;
-	}
-
-	if (*inbytesleft > 0) {
-		errno = E2BIG;
-		return -1;
-	}
-	
-	return 0;
-}
-
-struct charset_functions CP850_functions = {"CP850", CP850_pull, CP850_push};
-
-NTSTATUS charset_CP850_init(void)
-{
-	return smb_register_charset(&CP850_functions);
-}