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/* See LICENSE file for copyright and license details. */
#include "common.h"
#ifndef TEST
/* alternative to getline(3) that does not have a line length limit */
ssize_t
libfonts_getline__(int fd, char **linep, char **bufp, size_t *sizep, size_t *offp, size_t *availp)
{
size_t len, size;
ssize_t r;
char *new;
for (;;) {
for (len = 0; *offp + len < *availp; len++) {
if ((*bufp)[*offp + len] == '\n') {
*linep = &(*bufp)[*offp];
*offp += len += 1;
return (ssize_t)len;
}
}
if (*offp) {
memmove(&(*bufp)[0], &(*bufp)[*offp], *availp -= *offp);
*offp = 0;
}
if (*availp == *sizep) {
if (*sizep > SIZE_MAX - 128)
goto enomem;
size = *sizep + 128;
new = realloc(*bufp, size);
if (!new) {
enomem:
errno = ENOMEM;
return -1;
}
*bufp = new;
*sizep = size;
}
r = read(fd, &(*bufp)[*availp], *sizep - *availp);
if (r <= 0) {
if (r < 0)
return -1;
*linep = *bufp;
*offp = *availp;
return (ssize_t)*availp;
}
*availp += (size_t)r;
}
}
#else
int
main(void)
{
return 0; /* XXX add test */
}
#endif
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