X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fjson.c;h=ddce335a0bf33638238c3e2c3ac46bad4d3caeeb;hb=6302c64103fee63797dd10817d04fc7c1ddd23f7;hp=5887f677a42d731f71ade48ea1368f196bcb2c9d;hpb=2a022368f4b37559de5d5621a88c648023493f75;p=openvswitch

diff --git a/lib/json.c b/lib/json.c
index 5887f677..ddce335a 100644
--- a/lib/json.c
+++ b/lib/json.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009, 2010 Nicira Networks.
+ * Copyright (c) 2009, 2010, 2011 Nicira, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -23,7 +23,6 @@
 #include <errno.h>
 #include <float.h>
 #include <limits.h>
-#include <math.h>
 #include <string.h>
 
 #include "dynamic-string.h"
@@ -746,19 +745,15 @@ json_lex_number(struct json_parser *p)
 static const char *
 json_lex_4hex(const char *cp, const char *end, int *valuep)
 {
-    int value, i;
+    unsigned int value;
 
     if (cp + 4 > end) {
         return "quoted string ends within \\u escape";
     }
 
-    value = 0;
-    for (i = 0; i < 4; i++) {
-        unsigned char c = *cp++;
-        if (!isxdigit(c)) {
-            return "malformed \\u escape";
-        }
-        value = (value << 4) | hexit_value(c);
+    value = hexits_value(cp, 4, NULL);
+    if (value == UINT_MAX) {
+        return "malformed \\u escape";
     }
     if (!value) {
         return "null bytes not supported in quoted strings";
@@ -913,14 +908,6 @@ json_lex_input(struct json_parser *p, unsigned char c)
 {
     struct json_token token;
 
-    p->byte_number++;
-    if (c == '\n') {
-        p->column_number = 0;
-        p->line_number++;
-    } else {
-        p->column_number++;
-    }
-
     switch (p->lex_state) {
     case JSON_LEX_START:
         switch (c) {
@@ -1097,6 +1084,13 @@ json_parser_feed(struct json_parser *p, const char *input, size_t n)
     size_t i;
     for (i = 0; !p->done && i < n; ) {
         if (json_lex_input(p, input[i])) {
+            p->byte_number++;
+            if (input[i] == '\n') {
+                p->column_number = 0;
+                p->line_number++;
+            } else {
+                p->column_number++;
+            }
             i++;
         }
     }