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228ac9913d
- have the default makefile target update ../libc
99 lines
1.5 KiB
C
99 lines
1.5 KiB
C
/*
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* str.c
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*
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* Various string routines not available in OrcaLib. For an explanation
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* of these functions, see the appropriate man page.
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*
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* $Id: str.c,v 1.2 1997/09/21 06:23:08 gdr Exp $
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*
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* This file is formatted with tabs in every 8 columns.
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*/
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#ifdef __ORCAC__
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segment "libc_str__";
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#endif
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#include <stdlib.h>
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#include <string.h>
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/*
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* index
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*/
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char *
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index(const char *a, int b)
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{
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return strchr(a,b);
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}
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/*
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* rindex
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*/
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char *
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rindex(const char *a, int b)
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{
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return strrchr(a,b);
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}
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/*
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* strsep
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*
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* Get next token from string *stringp, where tokens are nonempty
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* strings separated by characters from delim.
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*
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* Writes NULs into the string at *stringp to end tokens.
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* delim need not remain constant from call to call.
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* On return, *stringp points past the last NUL written (if there might
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* be further tokens), or is NULL (if there are definitely no more tokens).
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*
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* If *stringp is NULL, strtoken returns NULL.
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*/
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char *
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strsep(register char **stringp, register const char *delim)
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{
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register char *s;
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register const char *spanp;
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register int c, sc;
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char *tok;
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if ((s = *stringp) == NULL) {
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return (NULL);
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}
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for (tok = s;;) {
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c = *s++;
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spanp = delim;
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do {
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if ((sc = *spanp++) == c) {
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if (c == 0) {
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s = NULL;
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} else {
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s[-1] = 0;
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}
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*stringp = s;
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return (tok);
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}
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} while (sc != 0);
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}
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/* NOTREACHED */
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}
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/*
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* strdup
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*/
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char *
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strdup(const char *str)
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{
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size_t len;
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char *buf;
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len = strlen(str) + 1;
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if ((buf = malloc(len)) == NULL) {
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return NULL;
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}
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strcpy(buf, str);
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return buf;
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}
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