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Diffstat (limited to 'contrib/bmake/stresep.c')
-rw-r--r-- | contrib/bmake/stresep.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/contrib/bmake/stresep.c b/contrib/bmake/stresep.c new file mode 100644 index 0000000..b1b5714 --- /dev/null +++ b/contrib/bmake/stresep.c @@ -0,0 +1,89 @@ +/* $NetBSD: stresep.c,v 1.2 2007/12/06 22:07:07 seb Exp $ */ + +/*- + * 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. 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. + */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include <sys/cdefs.h> + +#include <assert.h> +#include <string.h> + +#if !defined(HAVE_STRESEP) +char * stresep(char **stringp, const char *delim, int esc); +/* + * Get next token from string *stringp, where tokens are possibly-empty + * strings separated by characters from delim. If esc is not NUL, then + * the characters followed by esc are ignored and are not taken into account + * when splitting the string. + * + * 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, stresep returns NULL. + */ +char * +stresep(char **stringp, const char *delim, int esc) +{ + char *s; + const char *spanp; + int c, sc; + char *tok; + + if (stringp == NULL || delim == NULL) + return NULL; + + if ((s = *stringp) == NULL) + return NULL; + for (tok = s;;) { + c = *s++; + while (esc != '\0' && c == esc) { + (void)strcpy(s - 1, 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); + } +} +#endif + |