From 51c598fe0bbc0df29e8c94f51c90aa242b8bd41e Mon Sep 17 00:00:00 2001
From: Pavel Charvat <pavel.charvat@netcentrum.cz>
Date: Mon, 10 Dec 2007 11:18:13 +0100
Subject: [PATCH] UCW: Added UTF-8 routines with custom replacement char
 (lib/unicode.h).

---
 lib/unicode.h | 28 ++++++++++++++++++++++------
 1 file changed, 22 insertions(+), 6 deletions(-)

diff --git a/lib/unicode.h b/lib/unicode.h
index fb170955..fb8722d0 100644
--- a/lib/unicode.h
+++ b/lib/unicode.h
@@ -84,9 +84,9 @@ put1: *p++ = 0x80 | (u & 0x3f);
 #define UTF8_GET_NEXT if (unlikely((*p & 0xc0) != 0x80)) goto bad; u = (u << 6) | (*p++ & 0x3f)
 
 /* Decode a character from the basic multilingual plane [0, 0xFFFF]
- * or return UNI_REPLACEMENT if the encoding has been corrupted */
+ * or return 'repl' if the encoding has been corrupted */
 static inline byte *
-utf8_get(const byte *p, uns *uu)
+utf8_get_repl(const byte *p, uns *uu, uns repl)
 {
   uns u = *p++;
   if (u < 0x80)
@@ -95,7 +95,7 @@ utf8_get(const byte *p, uns *uu)
     {
       /* Incorrect byte sequence */
     bad:
-      u = UNI_REPLACEMENT;
+      u = repl;
     }
   else if (u < 0xe0)
     {
@@ -115,9 +115,9 @@ utf8_get(const byte *p, uns *uu)
 }
 
 /* Decode a value from the range [0, 0x7FFFFFFF] 
- * or return UNI_REPLACEMENT if the encoding has been corrupted */
+ * or return 'repl' if the encoding has been corrupted */
 static inline byte *
-utf8_32_get(const byte *p, uns *uu)
+utf8_32_get_repl(const byte *p, uns *uu, uns repl)
 {
   uns u = *p++;
   if (u < 0x80)
@@ -126,7 +126,7 @@ utf8_32_get(const byte *p, uns *uu)
     {
       /* Incorrect byte sequence */
     bad:
-      u = UNI_REPLACEMENT;
+      u = repl;
     }
   else if (u < 0xe0)
     {
@@ -163,6 +163,22 @@ get1: UTF8_GET_NEXT;
   return (byte *)p;
 }
 
+/* Decode a character from the basic multilingual plane [0, 0xFFFF]
+ * or return UNI_REPLACEMENT if the encoding has been corrupted */
+static inline byte *
+utf8_get(const byte *p, uns *uu)
+{
+  return utf8_get_repl(p, uu, UNI_REPLACEMENT);
+}
+
+/* Decode a value from the range [0, 0x7FFFFFFF] 
+ * or return UNI_REPLACEMENT if the encoding has been corrupted */
+static inline byte *
+utf8_32_get(const byte *p, uns *uu)
+{
+  return utf8_32_get_repl(p, uu, UNI_REPLACEMENT);
+}
+
 #define PUT_UTF8(p,u) p = utf8_put(p, u)
 #define GET_UTF8(p,u) p = (byte*)utf8_get(p, &(u))
 
-- 
2.39.2