Changeset 10191 for trunk/src/kernel32/heapstring.cpp

Timestamp:

Jul 31, 2003, 5:59:49 PM (22 years ago)

Author:

sandervl

Message:

export DBCS environment variable; updated special DBCS string functions to behave differently in SBCS environments

File:

• trunk/src/kernel32/heapstring.cpp (modified) (5 diffs)

trunk/src/kernel32/heapstring.cpp

@@ -1 @@
-/* $Id: heapstring.cpp,v 1.53 2003-07-16 18:07:01 sandervl Exp $ */
+/* $Id: heapstring.cpp,v 1.54 2003-07-31 15:59:49 sandervl Exp $ */
 /*
  * Project Odin Software License can be found in LICENSE.TXT
@@ -486 +486 @@
     //-> overwrites stack
     if(ret == length) {
+#if 1
+         lstrtrunc( astring, length );
+#else
          astring[length-1] = 0;
+#endif
     }
     else astring[ret] = 0;
@@ -619 +623 @@
         ulen = lstrlenW( ustring );
 
+    if( !IsDBCSEnv() ) return ulen;
+
     ret = WideCharToMultiByte( CP_ACP, 0, ustring, ulen, 0, 0, 0, 0 );
     if(ret == 0) {
@@ -663 +669 @@
         alen = strlen( astring );
 
+    if( !IsDBCSEnv() ) return alen;
+
     ret = MultiByteToWideChar( CP_ACP, 0, astring, alen, 0, 0 );
     if(ret == 0) {
@@ -670 +678 @@
 
     return ret;
+}
+
+/*****************************************************************************
+ * NAME
+ *      lstrtrunc
+ *
+ * PURPOSE
+ *      truncate ansi string
+ *
+ * PARAMETERS
+ *      max - max length of truncated string including null-terminator
+ *
+ * RESULT
+ *   Success
+ *      return the length of truncated string not including null-terminator
+ *
+ *   Failure
+ *      return 0.
+ *
+ * REMARK
+ *      this function is not Win32 API but helper for convenient.
+ *
+ * AUTHOR    : KO Myung-Hun
+ *****************************************************************************/
+
+int WIN32API lstrtrunc( LPSTR astring, int max )
+{
+    int i;
+
+    if( !astring || ( max < 1 ))
+        return 0;
+
+    astring[ max - 1 ] = 0;
+
+    if( !IsDBCSEnv() ) return max;
+
+    max = strlen( astring );
+    for( i = 0; i < max; i++ )
+        if( IsDBCSLeadByte( astring[ i ]))
+            i++;
+
+    if( i > max )               // broken DBCS lead byte ?
+        astring[ --max ] = 0;   // then remove DBCS lead byte
+
+    return max;
 }