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OS/2 Shareware BBS: 10 Tools
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snip9707.zip
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STPTOK.C
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1997-07-05
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/* +++Date last modified: 05-Jul-1997 */
/*
** stptok() -- public domain by Ray Gardner, modified by Bob Stout
**
** You pass this function a string to parse, a buffer to receive the
** "token" that gets scanned, the length of the buffer, and a string of
** "break" characters that stop the scan. It will copy the string into
** the buffer up to any of the break characters, or until the buffer is
** full, and will always leave the buffer null-terminated. It will
** return a pointer to the first non-breaking character after the one
** that stopped the scan.
*/
#include <string.h>
#include <stdlib.h>
#include "snip_str.h"
#if defined(__cplusplus) && __cplusplus
extern "C" {
#endif
char *stptok(const char *s, char *tok, size_t toklen, char *brk)
{
char *lim, *b;
if (!*s)
return NULL;
lim = tok + toklen - 1;
while ( *s && tok < lim )
{
for ( b = brk; *b; b++ )
{
if ( *s == *b )
{
*tok = 0;
for (++s, b = brk; *s && *b; ++b)
{
if (*s == *b)
{
++s;
b = brk;
}
}
return (char *)s;
}
}
*tok++ = *s++;
}
*tok = 0;
return (char *)s;
}
#if defined(__cplusplus) && __cplusplus
}
#endif
#ifdef TEST
#include <stdio.h>
main(int argc, char *argv[])
{
char *ptr, buf[256];
if (3 > argc)
{
puts("Usage: STPTOK \"string\" \"token_string\"");
return EXIT_FAILURE;
}
else ptr = argv[1];
do
{
ptr = stptok(ptr, buf, sizeof(buf), argv[2]);
printf("stptok(\"%s\", \"%s\")\n buf: \"%s\"\n "
"returned: \"%s\"\n", argv[1], argv[2], buf, ptr);
} while (ptr && *ptr);
return EXIT_SUCCESS;
}
#endif /* TEST */