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#include <ctype.h>
#include <string.h>
#include "../include/strexp.h"
char **strexp(char *str, int *n)
{
char **ret;
char *head, *tail;
int num;
int len;
/* return NULL if given an empty string */
if(!str)
return(NULL);
num = 0;
head = tail = str;
ret = NULL;
/* iterate while we're inside the string */
while(*head)
{
/* skip to next non-blank character */
while(isblank(*head))
head++;
/* find next blank character */
tail = head;
while(*tail && !isblank(*tail))
tail++;
/* determine length of substring */
len = (tail - head);
/* add string to list */
num++;
ret = (char **)realloc(ret, num*sizeof(char *));
ret[num - 1] = (char *)malloc(len + 1);
/* copy string over and null-terminate */
strncpy (ret[num - 1], head, len);
ret[num-1][len] = '\0';
/* get ready for next substring */
head = tail;
}
/* we're done... */
*n = num;
return ret;
}
char **strchrexp(char *str, char c, int *n)
{
char **ret;
char *head, *tail;
int num;
int len;
/* return NULL if given an empty string */
if(!str)
return(NULL);
num = 0;
head = tail = str;
ret = NULL;
/* iterate while we're inside the string */
while (*head && *tail)
{
/* find next blank character */
tail = head;
while (*tail && (*tail != c))
tail++;
/* determine length of substring */
len = (tail - head);
/* add string to list */
num++;
ret = (char **)realloc(ret, num*sizeof(char *));
ret[num - 1] = (char *)malloc(len + 1);
/* copy string over and null-terminate */
strncpy (ret[num - 1], head, len);
ret[num-1][len] = '\0';
/* get ready for next field */
head = tail + 1;
}
/* we're done... */
*n = num;
return ret;
}
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