added functions for upper/lowercase a buffer and added 'len' the html-encoding

git-svn-id: svn://svn.lighttpd.net/lighttpd/branches/lighttpd-merge-1.4.x@534 152afb58-edef-0310-8abb-c4023f1b3aa9

src/buffer.c

@@ -660,7 +660,7 @@ int buffer_append_string_hex(buffer *b, const char *in, size_t in_len) {
 	return 0;
 }
 
-int buffer_append_string_url_encoded(buffer *b, const char *s) {
+int buffer_append_string_url_encoded(buffer *b, const char *s, size_t s_len) {
 	unsigned char *ds, *d;
 	size_t d_len;
 	
@@ -670,6 +670,7 @@ int buffer_append_string_url_encoded(buffer *b, const char *s) {
 		SEGFAULT();
 	}
 	
+	if (s_len == 0) return 0;
 	
 	/* count to-be-encoded-characters */
 	for (ds = (unsigned char *)s, d_len = 0; *ds; ds++) {
@@ -747,7 +748,7 @@ int buffer_append_string_url_encoded(buffer *b, const char *s) {
 	return 0;
 }
 
-int buffer_append_string_html_encoded(buffer *b, const char *s) {
+int buffer_append_string_html_encoded(buffer *b, const char *s, size_t s_len) {
 	unsigned char *ds, *d;
 	size_t d_len;
 	
@@ -757,6 +758,8 @@ int buffer_append_string_html_encoded(buffer *b, const char *s) {
 		SEGFAULT();
 	}
 	
+	/* nothing to append */
+	if (s_len == 0) return 0;
 	
 	/* count to-be-encoded-characters */
 	for (ds = (unsigned char *)s, d_len = 0; *ds; ds++) {
@@ -964,3 +967,32 @@ int light_isalpha(int c) {
 int light_isalnum(int c) {
 	return light_isdigit(c) || light_isalpha(c);
 }
+
+int buffer_to_lower(buffer *b) {
+	char *c;
+	
+	if (b->used == 0) return 0;
+	
+	for (c = b->ptr; *c; c++) {
+		if (*c >= 'A' && *c <= 'Z') {
+			*c |= 32;
+		}
+	}
+	
+	return 0;
+}
+
+
+int buffer_to_upper(buffer *b) {
+	char *c;
+	
+	if (b->used == 0) return 0;
+	
+	for (c = b->ptr; *c; c++) {
+		if (*c >= 'a' && *c <= 'z') {
+			*c &= ~32;
+		}
+	}
+	
+	return 0;
+}

src/buffer.h

@@ -84,13 +84,16 @@ int buffer_is_equal_string(buffer *a, const char *s, size_t b_len);
 int buffer_caseless_compare(const char *a, size_t a_len, const char *b, size_t b_len);
 
 int buffer_append_string_hex(buffer *b, const char *in, size_t in_len);
-int buffer_append_string_url_encoded(buffer *b, const char *s);
-int buffer_append_string_html_encoded(buffer *b, const char *s);
+int buffer_append_string_url_encoded(buffer *b, const char *s, size_t s_len);
+int buffer_append_string_html_encoded(buffer *b, const char *s, size_t s_len);
 
 int buffer_urldecode_path(buffer *url);
 int buffer_urldecode_query(buffer *url);
 int buffer_path_simplify(buffer *dest, buffer *src);
 
+int buffer_to_lower(buffer *b);
+int buffer_to_upper(buffer *b);
+
 /** deprecated */
 int ltostr(char *buf, long val);
 char hex2int(unsigned char c);