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