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/*
Copyright (C) 2016 Paweł Redman
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, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "common.h"
void vstr_init(vstr_t *vstr)
{
memset(vstr, 0, sizeof(*vstr));
}
void vstr_free(vstr_t *vstr)
{
free(vstr->data);
}
void vstr_clear(vstr_t *vstr)
{
vstr->size = 0;
}
static int vstr_enlarge(vstr_t *vstr)
{
size_t new_alloc;
new_alloc = (vstr->alloc + 4) * 3 / 2;
debug("%zu -> %zu\n", vstr->alloc, new_alloc);
vstr->data = realloc(vstr->data, new_alloc);
if (!vstr->data)
return 1;
vstr->alloc = new_alloc;
return 0;
}
int vstr_putc(vstr_t *vstr, char ch)
{
// note: keep at least one character free at all times for vstr_termz
if (vstr->size + 2 > vstr->alloc)
if (vstr_enlarge(vstr))
return -ENOMEM;
vstr->data[vstr->size] = ch;
vstr->size++;
return 0;
}
int vstr_cmp(vstr_t *vstr, const char *str)
{
size_t len;
len = strlen(str);
if (vstr->size < len)
len = vstr->size;
return memcmp(vstr->data, str, len);
}
char *vstr_strdup(vstr_t *vstr)
{
char *str;
str = malloc(vstr->size + 1);
if (!str)
return NULL;
memcpy(str, vstr->data, vstr->size);
str[vstr->size] = 0;
return str;
}
void vstr_termz(vstr_t *vstr)
{
vstr->data[vstr->size] = 0;
}
float vstr_atof(vstr_t *vstr)
{
if (!vstr->size)
return 0;
vstr_termz(vstr);
return atof(vstr->data);
}
size_t vstr_atoz(vstr_t *vstr)
{
if (!vstr->size)
return 0;
vstr_termz(vstr);
return strtoull(vstr->data, NULL, 10);
}
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