kaguya
72 lines
1.3 KiB
C
72 lines
1.3 KiB
C
#ifndef _GNU_SOURCE
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#define _GNU_SOURCE
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#endif
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#include <assert.h>
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#include <stdbool.h>
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#include <stdio.h>
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struct testcookie {
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bool read;
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bool write;
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bool seek;
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bool close;
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};
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ssize_t cookie_read(void *c, char *buf, size_t size) {
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(void) buf;
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struct testcookie *cookie = c;
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cookie->read = true;
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return size;
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}
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ssize_t cookie_write(void *c, const char *buf, size_t size) {
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(void) buf;
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struct testcookie *cookie = c;
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cookie->write = true;
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return size;
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}
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int cookie_seek(void *c, off64_t *offset, int whence) {
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(void) offset;
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(void) whence;
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struct testcookie *cookie = c;
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cookie->seek = true;
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return 0;
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}
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int cookie_close(void *c) {
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struct testcookie *cookie = c;
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cookie->close = true;
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return 0;
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}
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int main() {
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struct testcookie cookie = { false, false, false, false };
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cookie_io_functions_t funcs = {
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.read = cookie_read,
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.write = cookie_write,
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.seek = cookie_seek,
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.close = cookie_close,
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};
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FILE *stream = fopencookie(&cookie, "w+", funcs);
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assert(stream);
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unsigned char buf[1];
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int ret = fread(buf, 1, 1, stream);
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assert(ret == 1);
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ret = fwrite(buf, 1, 1, stream);
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assert(ret == 1);
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ret = fseek(stream, 0, SEEK_SET);
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assert(!ret);
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ret = fclose(stream);
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assert(!ret);
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assert(cookie.read && cookie.write && cookie.seek && cookie.close);
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return 0;
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}
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