Parser for Content-Disposition header

svn path=/trunk/netsurf/; revision=11765

utils/http.c

@@ -343,6 +343,42 @@ nserror http_parse_content_type(const char *header_value, char **media_type,
 	return NSERROR_OK;
 }
 
+/* See http.h for documentation */
+nserror http_parse_content_disposition(const char *header_value,
+		char **disposition_type, http_parameter **parameters)
+{
+	const char *pos = header_value;
+	char *type;
+	http_parameter *params = NULL;
+	nserror error;
+
+	/* disposition-type *( ";" parameter ) */
+
+	while (*pos == ' ' || *pos == '\t')
+		pos++;
+
+	error = http_parse_token(&pos, &type);
+	if (error != NSERROR_OK)
+		return error;
+
+	while (*pos == ' ' || *pos == '\t')
+		pos++;
+
+	if (*pos == ';') {
+		error = http_parse_parameter_list(&pos, &params);
+		if (error != NSERROR_OK) {
+			free(type);
+			return error;
+		}
+	}
+
+	*disposition_type = type;
+	*parameters = params;
+
+	return NSERROR_OK;
+
+}
+
 /* See http.h for documentation */
 nserror http_parameter_list_find_item(const http_parameter *list,
 		const char *name, const char **value)

utils/http.h

@@ -39,6 +39,18 @@ typedef struct http_parameter http_parameter;
 nserror http_parse_content_type(const char *header_value, char **media_type, 
 		http_parameter **parameters);
 
+/**
+ * Parse an HTTP Content-Disposition header value
+ *
+ * \param header_value      Header value to parse
+ * \param disposition_type  Pointer to location to receive disposition type
+ * \param parameters        Pointer to location to receive parameter list
+ * \return NSERROR_OK on success,
+ *         NSERROR_NOMEM on memory exhaustion
+ */
+nserror http_parse_content_disposition(const char *header_value,
+		char **disposition_type, http_parameter **parameters);
+
 /**
  * Find a named item in an HTTP parameter list
  *