1 files changed, 70 insertions, 0 deletions
diff --git a/nsprpub/lib/libc/src/strchr.c b/nsprpub/lib/libc/src/strchr.c
new file mode 100644
index 0000000000..7de1887dc3
--- /dev/null
+++ b/nsprpub/lib/libc/src/strchr.c
@@ -0,0 +1,70 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "plstr.h"
+#include <string.h>
+
+PR_IMPLEMENT(char *)
+PL_strchr(const char *s, char c)
+{
+    if( (const char *)0 == s ) {
+        return (char *)0;
+    }
+
+    return strchr(s, c);
+}
+
+PR_IMPLEMENT(char *)
+PL_strrchr(const char *s, char c)
+{
+    if( (const char *)0 == s ) {
+        return (char *)0;
+    }
+
+    return strrchr(s, c);
+}
+
+PR_IMPLEMENT(char *)
+PL_strnchr(const char *s, char c, PRUint32 n)
+{
+    if( (const char *)0 == s ) {
+        return (char *)0;
+    }
+
+    for( ; n && *s; s++, n-- )
+        if( *s == c ) {
+            return (char *)s;
+        }
+
+    if( ((char)0 == c) && (n > 0) && ((char)0 == *s) ) {
+        return (char *)s;
+    }
+
+    return (char *)0;
+}
+
+PR_IMPLEMENT(char *)
+PL_strnrchr(const char *s, char c, PRUint32 n)
+{
+    const char *p;
+
+    if( (const char *)0 == s ) {
+        return (char *)0;
+    }
+
+    for( p = s; n && *p; p++, n-- )
+        ;
+
+    if( ((char)0 == c) && (n > 0) && ((char)0 == *p) ) {
+        return (char *)p;
+    }
+
+    for( p--; p >= s; p-- )
+        if( *p == c ) {
+            return (char *)p;
+        }
+
+    return (char *)0;
+}