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readstdin: allocate amount of items

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Keep track of the amount of items (not a total buffer size), allocate an array of
new items. For now change BUFSIZ bytes to 256 * sizeof(struct item)).
This commit is contained in:
Hiltjo Posthuma 2022-10-31 11:52:30 +01:00
parent bcbc1ef5c4
commit ba1a347dca
1 changed files with 6 additions and 4 deletions
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10
dmenu.c
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@ -550,14 +550,16 @@ static void
readstdin(void)
{
char *line = NULL;
size_t i, junk, size = 0;
size_t i, junk, itemsiz = 0;
ssize_t len;
/* read each line from stdin and add it to the item list */
for (i = 0; (len = getline(&line, &junk, stdin)) != -1; i++) {
if (i + 1 >= size / sizeof *items)
if (!(items = realloc(items, (size += BUFSIZ))))
die("cannot realloc %zu bytes:", size);
if (i + 1 >= itemsiz) {
itemsiz += 256;
if (!(items = realloc(items, itemsiz * sizeof(*items))))
die("cannot realloc %zu bytes:", itemsiz * sizeof(*items));
}
if (line[len - 1] == '\n')
line[len - 1] = '\0';
items[i].text = line;