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#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <unistd.h>
#include <string.h>
#ifdef USE_HOST_LIBC
#define TEST_FILE "getdelim-host-libc.tmp"
#else
#define TEST_FILE "getdelim.tmp"
#endif
int main(void) {
FILE *fp;
char *line = NULL;
size_t len = 0;
ssize_t read;
// We have to open the file for writing and then reading separately,
// as mlibc doesn't allow us to do both at the same time (yet).
fp = fopen(TEST_FILE, "w");
assert(fp);
fputs("foo\nbar\nbaz\nquux\n", fp);
fclose(fp);
fp = fopen(TEST_FILE, "r");
assert(fp);
while ((read = getline(&line, &len, fp)) != -1) {
printf("read line of length %zd, capacity %zu\n", read, len);
}
assert(!ferror(fp));
free(line);
fclose(fp);
size_t nchars = 10000;
fp = fopen(TEST_FILE, "w");
assert(fp);
for (size_t i = 0; i < nchars; i++)
fputc('a', fp);
fputc('b', fp);
fclose(fp);
line = NULL;
len = 0;
fp = fopen(TEST_FILE, "r");
assert(fp);
while ((read = getdelim(&line, &len, 'b', fp)) != -1) {
printf("read line of length %zd, capacity %zu\n", read, len);
assert((size_t)read == nchars + 1);
}
assert(len > nchars + 1);
assert(!ferror(fp));
assert(feof(fp));
assert(getdelim(&line, &len, 'b', fp) == -1);
assert(feof(fp));
free(line);
fclose(fp);
fp = fopen(TEST_FILE, "w");
assert(fp);
assert(fwrite("1234ef\0f", 1, 8, fp) == 8);
fclose(fp);
fp = fopen(TEST_FILE, "r");
assert(fp);
/* test with line = NULL and large len */
line = NULL;
len = (size_t) ~0;
assert(getdelim(&line, &len, 'e', fp) == 5);
assert(!memcmp(line, "1234e", 6));
assert(5 < len);
/* test handling of internal nulls */
assert(getdelim(&line, &len, 'e', fp) == 3);
assert(!memcmp(line, "f\0f", 4));
assert(3 < len);
/* test handling of EOF */
assert(getdelim(&line, &len, 'e', fp) == -1);
free(line);
fclose(fp);
// Delete the file
unlink(TEST_FILE);
}
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