Imported Upstream version 0.4.0

[deb_pkgs/spamass-milter.git] / strsep.c

diff --git a/strsep.c b/strsep.c
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--- /dev/null
+++ b/strsep.c
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+/*-
+ * Copyright (c) 1990, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strsep.c   8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+/* $FreeBSD: src/lib/libc/string/strsep.c,v 1.5 2002/03/21 18:44:54 obrien Exp $ */
+
+/* $Id: strsep.c,v 1.3 2003/06/10 05:02:39 dnelson Exp $ */
+
+#include <string.h>
+#include <stdio.h>
+
+/*
+ * Get next token from string *stringp, where tokens are possibly-empty
+ * strings separated by characters from delim.
+ *
+ * Writes NULs into the string at *stringp to end tokens.
+ * delim need not remain constant from call to call.
+ * On return, *stringp points past the last NUL written (if there might
+ * be further tokens), or is NULL (if there are definitely no more tokens).
+ *
+ * If *stringp is NULL, strsep returns NULL.
+ */
+char *
+strsep(stringp, delim)
+       char **stringp;
+       const char *delim;
+{
+       char *s;
+       const char *spanp;
+       int c, sc;
+       char *tok;
+
+       if ((s = *stringp) == NULL)
+               return (NULL);
+       for (tok = s;;) {
+               c = *s++;
+               spanp = delim;
+               do {
+                       if ((sc = *spanp++) == c) {
+                               if (c == 0)
+                                       s = NULL;
+                               else
+                                       s[-1] = 0;
+                               *stringp = s;
+                               return (tok);
+                       }
+               } while (sc != 0);
+       }
+       /* NOTREACHED */
+}