From d018690dece24cf7f636b46556c14100f425997d Mon Sep 17 00:00:00 2001
From: Lei Zhang <thestig@google.com>
Date: Fri, 18 Jul 2008 17:17:16 -0700
Subject: [PATCH] [PATCH] ntdll: Use our own implementation of atoi.

---
 dlls/ntdll/string.c       |   23 ++++++++++++++++++++++-
 dlls/ntdll/tests/string.c |   14 ++++++++++++++
 2 files changed, 36 insertions(+), 1 deletions(-)

diff --git a/dlls/ntdll/string.c b/dlls/ntdll/string.c
index ebfa6fb..6b36364 100644
--- a/dlls/ntdll/string.c
+++ b/dlls/ntdll/string.c
@@ -466,10 +466,31 @@ ULONG __cdecl NTDLL_strtoul( const char *nptr, char **endptr, int base )
 
 /*********************************************************************
  *                  atoi   (NTDLL.@)
+ *
+ * Same implementation as _atoi64.
  */
 int __cdecl NTDLL_atoi( const char *nptr )
 {
-    return atoi( nptr );
+    int RunningTotal = 0;
+    char bMinus = 0;
+
+    while (*nptr == ' ' || (*nptr >= '\011' && *nptr <= '\015')) {
+        nptr++;
+    } /* while */
+
+    if (*nptr == '+') {
+        nptr++;
+    } else if (*nptr == '-') {
+        bMinus = 1;
+        nptr++;
+    } /* if */
+
+    while (*nptr >= '0' && *nptr <= '9') {
+        RunningTotal = RunningTotal * 10 + *nptr - '0';
+        nptr++;
+    } /* while */
+
+    return bMinus ? -RunningTotal : RunningTotal;
 }
 
 
diff --git a/dlls/ntdll/tests/string.c b/dlls/ntdll/tests/string.c
index e9bf5e1..08d68e4 100644
--- a/dlls/ntdll/tests/string.c
+++ b/dlls/ntdll/tests/string.c
@@ -893,6 +893,18 @@ static void test_wtoi(void)
     } /* for */
 }
 
+static void test_atoi(void)
+{
+    int test_num;
+    int result;
+
+    for (test_num = 0; test_num < NB_STR2LONG; test_num++) {
+        result = patoi(str2long[test_num].str);
+        ok(result == str2long[test_num].value,
+           "(test %d): call failed: _atoi(\"%s\") has result %d, expected: %d\n",
+           test_num, str2long[test_num].str, result, str2long[test_num].value);
+    } /* for */
+}
 
 static void test_wtol(void)
 {
@@ -1095,4 +1107,6 @@ START_TEST(string)
         test_wtoi64();
     if (p_wcschr && p_wcsrchr)
         test_wcsfuncs();
+    if (patoi)
+        test_atoi();
 }
-- 
1.5.4.5