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/* $Id: strutil.c,v 1.26 2004/11/04 21:25:17 graziano Exp $ */
#include <ctype.h>
#include <string.h>
#include <stdarg.h>
#include "strutil.h"
#define EOS '\0'
void
strcase(char *string,
CaseTypes whatCase) {
char *c;
int raise;
raise = (whatCase == ALL_UPPER) || (whatCase == INITIAL_UPPER);
/* to* are undefined if *c isn't a character, so we check */
for(c = string; *c != EOS && isalpha((int) *c); c++) {
*c = raise ? toupper((int)*c) : tolower((int)*c);
raise = (whatCase == ALL_UPPER) || (whatCase == INITIAL_LOWER);
}
}
int
strnmatch( const char *string,
const char *pattern,
size_t len) {
const char *lastChance;
const char *nextWild;
int tameLen;
if(*pattern == '*') {
do pattern++; while (*pattern == '*');
if(*pattern == '\0') {
return 1; /* Trailing star matches everything. */
}
nextWild = strchr(pattern, '*');
tameLen = (nextWild == NULL) ? strlen(pattern) : nextWild - pattern;
/* The wildcard we're processing can match any string of
* characters up to an occurrence of the following
* non-wild subpattern. For each subpattern occurrence,
* see if the remaining string matches the remaining
* pattern. */
lastChance = string + len - tameLen;
for(; string <= lastChance; string++) {
if((strncmp(string, pattern, tameLen) == 0) && strnmatch(string + tameLen, pattern + tameLen, lastChance - string)) {
return 1;
}
}
return 0;
} else {
nextWild = strchr(pattern, '*');
if(nextWild == NULL) {
/* No wildcards in pattern; check for exact match. */
return (strlen(pattern) == len) && (strncmp(string, pattern, len) == 0);
} else {
/* Check for leading exact match followed by a
* wildcard match. */
tameLen = nextWild - pattern;
return (tameLen <= len) && (strncmp(string, pattern, tameLen) == 0) && strnmatch(string + tameLen, nextWild, len - tameLen);
}
}
}
#ifndef HAVE_STRNLEN
size_t
strnlen( const char *s,
size_t maxlen) {
size_t i;
if (maxlen <= 0 || s == NULL) {
return 0;
}
for (i=0; i<maxlen; i++) {
if (s[i] == '\0') {
/* done */
break;
}
}
return i;
}
#endif
int
strntok(char *dest,
const char *source,
int len,
const char *delim,
const char **end) {
char *last = dest + len - 1;
/* sanity check */
if (dest == NULL || source == NULL) {
return 0;
}
/* Skip leading delimiters. */
while( (*source != EOS) && (strchr(delim, *source) != NULL) ) {
source++;
}
if(*source == EOS) {
return 0;
}
while( (dest < last) && (*source != EOS) &&
(strchr(delim, *source) == NULL) ) {
*dest++ = *source++;
}
if(end != NULL) {
*end = (const char *)source;
}
*dest = EOS;
return 1;
}
int
vstrncpy(char *dest,
size_t len,
int count,
...) {
va_list paramList;
int i;
const char *source;
char *end = dest + len - 1;
char *start = dest;
va_start(paramList, count);
for (i = 0; i < count; i++) {
for (source = va_arg(paramList, const char*);
(dest < end) && (*source != EOS); dest++, source++)
*dest = *source;
}
*dest = EOS;
va_end(paramList);
return dest - start;
}
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