3 files changed, 87 insertions, 0 deletions
diff --git a/jnlib/ChangeLog b/jnlib/ChangeLog
index b9a1c2bb..93253685 100644
--- a/jnlib/ChangeLog
+++ b/jnlib/ChangeLog
@@ -1,3 +1,8 @@
+2001-07-19  Werner Koch  <[email protected]>
+
+	* stringhelp.c (ascii_memistr,ascii_isupper,ascii_islower,
+	ascii_toupper,ascii_tolower, ascii_strcasecmp, ascii_memcasecmp): New.
+
 2000-07-26 10:02:51  Werner Koch  ([email protected])
 
   * stringhelp.c.: Add stdarg.h
diff --git a/jnlib/stringhelp.c b/jnlib/stringhelp.c
index f222a627..0d3035e8 100644
--- a/jnlib/stringhelp.c
+++ b/jnlib/stringhelp.c
@@ -264,6 +264,79 @@ compare_filenames( const char *a, const char *b )
 }
 
 
+/****************************************************
+ ******** locale insensitive ctype functions ********
+ ****************************************************/
+/* FIXME: replace them by a table lookup and macros */
+int
+ascii_isupper (int c)
+{
+    return c >= 'A' && c <= 'Z';
+}
+
+int
+ascii_islower (int c)
+{
+    return c >= 'a' && c <= 'z';
+}
+
+int 
+ascii_toupper (int c)
+{
+    if (c >= 'a' && c <= 'z')
+        c &= ~0x20;
+    return c;
+}
+
+int 
+ascii_tolower (int c)
+{
+    if (c >= 'A' && c <= 'Z')
+        c |= 0x20;
+    return c;
+}
+
+
+int
+ascii_strcasecmp( const char *a, const char *b )
+{
+    if (a == b)
+        return 0;
+
+    for (; *a && *b; a++, b++) {
+	if (*a != *b && ascii_toupper(*a) != ascii_toupper(*b))
+	    break;
+    }
+    return *a == *b? 0 : (ascii_toupper (*a) - ascii_toupper (*b));
+}
+
+int
+ascii_memcasecmp( const char *a, const char *b, size_t n )
+{
+    if (a == b)
+        return 0;
+    for ( ; n; n--, a++, b++ ) {
+	if( *a != *b  && ascii_toupper (*a) != ascii_toupper (*b) )
+            return *a == *b? 0 : (ascii_toupper (*a) - ascii_toupper (*b));
+    }
+    return 0;
+}
+
+int
+ascii_strcmp( const char *a, const char *b )
+{
+    if (a == b)
+        return 0;
+
+    for (; *a && *b; a++, b++) {
+	if (*a != *b )
+	    break;
+    }
+    return *a == *b? 0 : (*(signed char *)a - *(signed char *)b);
+}
+
+
+
 /*********************************************
  ********** missing string functions *********
  *********************************************/
diff --git a/jnlib/stringhelp.h b/jnlib/stringhelp.h
index 5d124e40..17a6ad09 100644
--- a/jnlib/stringhelp.h
+++ b/jnlib/stringhelp.h
@@ -37,6 +37,15 @@ char *make_dirname(const char *filepath);
 char *make_filename( const char *first_part, ... );
 int compare_filenames( const char *a, const char *b );
 
+const char *ascii_memistr( const char *buf, size_t buflen, const char *sub );
+int ascii_isupper (int c);
+int ascii_islower (int c);
+int ascii_toupper (int c);
+int ascii_tolower (int c);
+int ascii_strcasecmp( const char *a, const char *b );
+int ascii_memcasecmp( const char *a, const char *b, size_t n );
+
+
 #ifndef HAVE_MEMICMP
 int memicmp( const char *a, const char *b, size_t n );
 #endif