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/* splitstring.c -- split a const string into fields.
Copyright (C) 2011-2022 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
/*
* Written by James Youngman.
*/
/* config.h must be included first. */
#include <config.h>
/* system headers. */
#include <stdbool.h>
#include <string.h>
/* gnulib headers would go here. */
/* find headers. */
#include "splitstring.h"
static size_t
field_length (const char *str, const char *separators)
{
/* if there are no separators, the whole input is one field. */
if (*separators)
{
const char *end = strpbrk (str, separators);
if (end)
return end - str;
}
return strlen (str);
}
bool
splitstring(const char *s, const char *separators, bool first,
size_t *pos, size_t *len)
{
if (first)
{
*pos = 0u;
*len = 0u;
}
else
{
*pos += *len; /* advance to the next field. */
if (s[*pos])
++*pos; /* skip the separator */
else
return false; /* we reached the end. */
}
*len = field_length (&s[*pos], separators);
return true;
}
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