static void _copy_string(wget_buffer_t *buf, unsigned int flags, int field_width, int precision, const char *arg)
{
size_t length;
if (!arg) {
wget_buffer_strcat(buf, "(null)");
return;
}
length = strlen(arg);
// info_printf("flags=0x%02x field_width=%d precision=%d length=%zd arg='%s'\n",
// flags,field_width,precision,length,arg);
if (precision >= 0 && length > (size_t)precision)
length = precision;
if (field_width) {
if ((unsigned)field_width > length) {
if (flags & FLAG_LEFT_ADJUST) {
wget_buffer_memcat(buf, arg, length);
wget_buffer_memset_append(buf, ' ', field_width - length);
} else {
wget_buffer_memset_append(buf, ' ', field_width - length);
wget_buffer_memcat(buf, arg, length);
}
} else {
wget_buffer_memcat(buf, arg, length);
}
} else {
wget_buffer_memcat(buf, arg, length);
}
}
static void _test_buffer(wget_buffer_t *buf, const char *name)
{
char test[256];
int it;
for (it = 0; it < (int)sizeof(test)-1; it++) {
test[it] = 'a' + it % 26;
test[it + 1] = 0;
wget_buffer_strcpy(buf, test);
wget_buffer_strcat(buf, test);
if (!strncmp(buf->data, test, it + 1) && !strncmp(buf->data + it + 1, test, it + 1)) {
ok++;
} else {
failed++;
info_printf("test_buffer.1 '%s': [%d] got %s (expected %s%s)\n", name, it, buf->data, test, test);
}
wget_buffer_memcpy(buf, test, it + 1);
wget_buffer_memcat(buf, test, it + 1);
if (!strncmp(buf->data, test, it + 1) && !strncmp(buf->data + it + 1, test, it + 1)) {
ok++;
} else {
failed++;
info_printf("test_buffer.2 '%s': [%d] got %s (expected %s%s)\n", name, it, buf->data, test, test);
}
wget_buffer_printf(buf, "%s%s", test, test);
if (!strncmp(buf->data, test, it + 1) && !strncmp(buf->data + it + 1, test, it + 1)) {
ok++;
} else {
failed++;
info_printf("test_buffer.3 '%s': [%d] got %s (expected %s%s)\n", name, it, buf->data, test, test);
}
wget_buffer_printf(buf, "%s", test);
wget_buffer_printf_append(buf, "%s", test);
if (!strncmp(buf->data, test, it + 1) && !strncmp(buf->data + it + 1, test, it + 1)) {
ok++;
} else {
failed++;
info_printf("test_buffer.4 '%s': [%d] got %s (expected %s%s)\n", name, it, buf->data, test, test);
}
}
}
static void test_buffer(void)
{
char sbuf[16];
wget_buffer_t buf, *bufp;
// testing buffer on stack, using initial stack memory
// without resizing
wget_buffer_init(&buf, sbuf, sizeof(sbuf));
wget_buffer_deinit(&buf);
// testing buffer on stack, using initial stack memory
// with resizing
wget_buffer_init(&buf, sbuf, sizeof(sbuf));
_test_buffer(&buf, "Test 1");
wget_buffer_deinit(&buf);
// testing buffer on stack, using initial heap memory
// without resizing
wget_buffer_init(&buf, NULL, 16);
wget_buffer_deinit(&buf);
// testing buffer on stack, using initial heap memory
// with resizing
wget_buffer_init(&buf, NULL, 16);
_test_buffer(&buf, "Test 2");
wget_buffer_deinit(&buf);
// testing buffer on heap, using initial stack memory
// without resizing
bufp = wget_buffer_init(NULL, sbuf, sizeof(sbuf));
wget_buffer_deinit(bufp);
bufp = wget_buffer_init(NULL, sbuf, sizeof(sbuf));
wget_buffer_free(&bufp);
// testing buffer on heap, using initial stack memory
// with resizing
bufp = wget_buffer_init(NULL, sbuf, sizeof(sbuf));
_test_buffer(bufp, "Test 3");
wget_buffer_deinit(bufp);
bufp = wget_buffer_init(NULL, sbuf, sizeof(sbuf));
_test_buffer(bufp, "Test 4");
wget_buffer_free(&bufp);
// testing buffer on heap, using initial heap memory
// without resizing
bufp = wget_buffer_alloc(16);
wget_buffer_free(&bufp);
// testing buffer on heap, using initial heap memory
// with resizing
bufp = wget_buffer_alloc(16);
_test_buffer(bufp, "Test 5");
wget_buffer_free(&bufp);
// check that appending works
wget_buffer_init(&buf, sbuf, sizeof(sbuf));
wget_buffer_strcpy(&buf, "A");
wget_buffer_strcat(&buf, "B");
wget_buffer_memcat(&buf, "C", 1);
wget_buffer_memset_append(&buf, 'D', 1);
wget_buffer_printf_append(&buf, "%s", "E");
if (!strcmp(buf.data, "ABCDE"))
ok++;
else {
failed++;
info_printf("test_buffer.append: got %s (expected %s)\n", buf.data, "ABCDE");
}
wget_buffer_deinit(&buf);
// test wget_buffer_trim()
wget_buffer_init(&buf, sbuf, sizeof(sbuf));
for (int mid_ws = 0; mid_ws <= 2; mid_ws++) {
char expected[16];
snprintf(expected, sizeof(expected), "x%.*sy", mid_ws, " ");
for (int lead_ws = 0; lead_ws <= 2; lead_ws++) {
for (int trail_ws = 0; trail_ws <= 2; trail_ws++) {
wget_buffer_printf(&buf, "%.*sx%.*sy%.*s", lead_ws, " ", mid_ws, " ", trail_ws, " ");
wget_buffer_trim(&buf);
if (!strcmp(buf.data, expected))
ok++;
else {
failed++;
info_printf("test_buffer_trim: got '%s' (expected '%s') (%d, %d, %d)\n", buf.data, expected, lead_ws, mid_ws, trail_ws);
}
}
}
}
wget_buffer_deinit(&buf);
}