about summary refs log tree commit diff
path: root/string/strtok.c
diff options
context:
space:
mode:
authorJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
committerJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
commit0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch)
tree2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /string/strtok.c
parent7d58530341304d403a6626d7f7a1913165fe2f32 (diff)
downloadglibc-0ecb606cb6cf65de1d9fc8a919bceb4be476c602.tar.gz
glibc-0ecb606cb6cf65de1d9fc8a919bceb4be476c602.tar.xz
glibc-0ecb606cb6cf65de1d9fc8a919bceb4be476c602.zip
2.5-18.1
Diffstat (limited to 'string/strtok.c')
-rw-r--r--string/strtok.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/string/strtok.c b/string/strtok.c
new file mode 100644
index 0000000000..f45b760f74
--- /dev/null
+++ b/string/strtok.c
@@ -0,0 +1,66 @@
+/* Copyright (C) 1991,1996,1997,1999,2000,2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <string.h>
+
+
+static char *olds;
+
+#undef strtok
+
+/* Parse S into tokens separated by characters in DELIM.
+   If S is NULL, the last string strtok() was called with is
+   used.  For example:
+	char s[] = "-abc-=-def";
+	x = strtok(s, "-");		// x = "abc"
+	x = strtok(NULL, "-=");		// x = "def"
+	x = strtok(NULL, "=");		// x = NULL
+		// s = "abc\0-def\0"
+*/
+char *
+strtok (s, delim)
+     char *s;
+     const char *delim;
+{
+  char *token;
+
+  if (s == NULL)
+    s = olds;
+
+  /* Scan leading delimiters.  */
+  s += strspn (s, delim);
+  if (*s == '\0')
+    {
+      olds = s;
+      return NULL;
+    }
+
+  /* Find the end of the token.  */
+  token = s;
+  s = strpbrk (token, delim);
+  if (s == NULL)
+    /* This token finishes the string.  */
+    olds = __rawmemchr (token, '\0');
+  else
+    {
+      /* Terminate the token and make OLDS point past it.  */
+      *s = '\0';
+      olds = s + 1;
+    }
+  return token;
+}