OVMS3/OVMS.V3/components/duktape/extras/minimal-printf/test.c

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#include <stdio.h>
#include <string.h>
#include "duk_minimal_printf.h"
char buffer[32];
static void init_buffer(void) {
int i;
for (i = 0; i < (int) sizeof(buffer); i++) {
buffer[i] = 0xff;
}
}
static void dump_buffer(void) {
int i;
unsigned char c;
printf("Buffer: '");
for (i = 0; i < (int) sizeof(buffer); i++) {
c = (unsigned char) buffer[i];
if (c < 0x20 || c >= 0x7e) {
printf("<%02x>", (unsigned int) c);
} else {
printf("%c", (int) c);
}
}
printf("'");
#if 0
printf(" -> ");
printf("Buffer:");
for (i = 0; i < sizeof(buffer); i++) {
c = (unsigned char) buffer[i];
if (c <= 0x20 || c >= 0x7e) {
printf(" <%02x>", (unsigned int) c);
} else {
printf(" %c", (char) c);
}
}
#endif
printf("\n");
}
int main(int argc, char *argv[]) {
int ret;
void *voidptr;
int i;
(void) argc; (void) argv;
/* Char format. */
init_buffer();
duk_minimal_snprintf(buffer, sizeof(buffer), "foo %c bar", 'Z');
dump_buffer();
/* Signed long format. */
init_buffer();
duk_minimal_snprintf(buffer, sizeof(buffer), "%ld %9ld", (long) 123, (long) 4321);
dump_buffer();
/* Signed long with zero padding. */
init_buffer();
duk_minimal_snprintf(buffer, sizeof(buffer), "%09ld", (long) 4321);
dump_buffer();
init_buffer();
duk_minimal_snprintf(buffer, sizeof(buffer), "%03ld %03ld %03ld", (long) -4321, (long) -432, (long) -43);
dump_buffer();
/* Unsigned long with zero padding. */
init_buffer();
duk_minimal_snprintf(buffer, sizeof(buffer), "%03lu %03lu %03lu", (long) -4321, (long) -432, (long) -43);
dump_buffer();
/* Signed integer. */
init_buffer();
duk_minimal_snprintf(buffer, sizeof(buffer), "%d %9d", (int) 0, (int) 4321);
dump_buffer();
/* Signed negative integer, fixed field width. */
init_buffer();
duk_minimal_snprintf(buffer, sizeof(buffer), "%9d", (int) -321);
dump_buffer();
init_buffer();
duk_minimal_snprintf(buffer, sizeof(buffer), "%09d", (int) -321);
dump_buffer();
printf(" -- printf comparison: %9d %09d\n", -321, -321);
/* Hex formatting. */
init_buffer();
duk_minimal_snprintf(buffer, sizeof(buffer), "%03x %03lx 0x%08lx", (int) 510, (long) 5105, (long) 0xdeadbeef);
dump_buffer();
/* Pointer formatting, NULL and non-NULL. */
init_buffer();
duk_minimal_snprintf(buffer, sizeof(buffer), "%p %p", (void *) NULL, (void *) buffer);
dump_buffer();
/* File/line like format test. */
init_buffer();
duk_minimal_snprintf(buffer, sizeof(buffer), "%s:%d", "foo bar quux", 123);
dump_buffer();
/* Zero size output buffer. */
init_buffer();
duk_minimal_snprintf(buffer, 0, "%s:%d", "foo bar quux", 123);
dump_buffer();
init_buffer();
duk_minimal_snprintf(buffer, 0, "");
dump_buffer();
/* NUL terminator boundary test. */
init_buffer();
duk_minimal_snprintf(buffer, 7, "foo: %s", "bar");
dump_buffer();
init_buffer();
duk_minimal_snprintf(buffer, 8, "foo: %s", "bar");
dump_buffer();
init_buffer();
duk_minimal_snprintf(buffer, 9, "foo: %s", "bar");
dump_buffer();
/* sprintf() binding, uses SIZE_MAX internally. */
init_buffer();
duk_minimal_sprintf(buffer, "unbounded print %s", "foo");
dump_buffer();
/* Pointer formatting; non-NULL and NULL. */
init_buffer();
duk_minimal_snprintf(buffer, sizeof(buffer), "%p %p", (void *) NULL, (void *) 0xdeadbeef);
dump_buffer();
/* Pointer parsing, non-NULL (32-bit) pointer. */
voidptr = (void *) 123;
ret = duk_minimal_sscanf("0xdeadbeef", "%p", &voidptr);
printf("ret=%d, void pointer: %p\n", ret, voidptr);
/* Pointer parsing, NULL (32-bit) pointer. */
voidptr = (void *) 123;
ret = duk_minimal_sscanf("0x00000000", "%p", &voidptr);
printf("ret=%d, void pointer: %p\n", ret, voidptr);
/* Pointer parsing, non-NULL (32-bit) pointer but garbage follows. */
voidptr = (void *) 123;
ret = duk_minimal_sscanf("0xdeadbeefx", "%p", &voidptr);
printf("ret=%d, void pointer: %p\n", ret, voidptr);
/* Fixed width test over a range of widths. */
for (i = 0; i <= 9; i++) {
char fmtbuf[16];
printf("--- pos/neg fixed width test, i=%d\n", i);
/* %0<i>d. %00d makes no sense, but tested anyway. */
memset((void *) fmtbuf, 0, sizeof(fmtbuf));
fmtbuf[0] = (char) '%';
fmtbuf[1] = (char) '0';
fmtbuf[2] = (char) ('0' + i);
fmtbuf[3] = 'd';
init_buffer();
duk_minimal_sprintf(buffer, (const char *) fmtbuf, 321);
dump_buffer();
init_buffer();
duk_minimal_sprintf(buffer, (const char *) fmtbuf, -321);
dump_buffer();
printf(" ==> printf: |");
printf((const char *) fmtbuf, 321);
printf("| |");
printf((const char *) fmtbuf, -321);
printf("|\n");
/* %<i>d. */
memset((void *) fmtbuf, 0, sizeof(fmtbuf));
fmtbuf[0] = (char) '%';
fmtbuf[1] = (char) ('0' + i);
fmtbuf[2] = 'd';
init_buffer();
duk_minimal_sprintf(buffer, (const char *) fmtbuf, 321);
dump_buffer();
init_buffer();
duk_minimal_sprintf(buffer, (const char *) fmtbuf, -321);
dump_buffer();
printf(" ==> printf: |");
printf((const char *) fmtbuf, 321);
printf("| |");
printf((const char *) fmtbuf, -321);
printf("|\n");
}
return 0;
}