#include "../tests.h"
#include <stdio.h>
#include <string.h>

#pragma GCC diagnostic ignored "-Wformat-truncation"

static void test_printf(void) {
	char buf[64];
	memset(buf, '?', 64);

	/* test proper overflow handling in snprintf */
	test(13 == snprintf(buf, 15, "That's 0x%x", 0x1337));
	test(!memcmp(buf, "That's 0x1337\0??", 16));
	test(17 == snprintf(buf, 15, "%05x %05x %05x", 0, 0, 0));
	test(!memcmp(buf, "00000 00000 00\0?", 16));

	/* all the other stuff */
	snprintf(buf, sizeof buf, "%010x", 0x1BABE);
	test(!strcmp(buf, "000001babe"));
	snprintf(buf, sizeof buf, "%10x", 0x1BABE);
	test(!strcmp(buf, "     1babe"));
	snprintf(buf, sizeof buf, "%10s", "hello");
	test(!strcmp(buf, "     hello"));

	snprintf(buf, sizeof buf, "%s%%%s", "ab", "cd");
	test(!strcmp(buf, "ab%cd"));

	snprintf(buf, sizeof buf, "%05u,%05u", 1234, 56789);
	test(!strcmp(buf, "01234,56789"));

	snprintf(buf, sizeof buf, "%5d,%5d", 123, 4567);
	test(!strcmp(buf, "  123, 4567"));
	snprintf(buf, sizeof buf, "%5d,%5d", -123, -4567);
	test(!strcmp(buf, " -123,-4567"));

	snprintf(buf, sizeof buf, "%u,%d,%x", 0, 0, 0);
	test(!strcmp(buf, "0,0,0"));

	/* precision */
	snprintf(buf, sizeof buf, "%5.2u,%5.2d,%5.2x", 0, 0, 0);
	test(!strcmp(buf, "   00,   00,   00"));
	snprintf(buf, sizeof buf, "%5.2u,%5.2d,%5.2x", 10, -10, 0x10);
	test(!strcmp(buf, "   10,  -10,   10"));
	snprintf(buf, sizeof buf, "%5.3d", -1);
	test(!strcmp(buf, " -001"));
	snprintf(buf, sizeof buf, "%.5d", 123);
	test(!strcmp(buf, "00123"));

	snprintf(buf, sizeof buf, "%.1s,%.10s,%.*s", "hello", "hello", 3, "hello");
	test(!strcmp(buf, "h,hello,hel"));
}

void r_s_printf(void) {
	run_test(test_printf);
}