static int palette_copy(palette_t *dest, const palette_t *src)
{
unsigned int i;
if (dest->num_entries != src->num_entries) {
log_error(palette_log,
"Number of entries of src and dest palette do not match.");
return -1;
}
for (i = 0; i < src->num_entries; i++)
palette_set_entry(dest, i, src->entries[i].red, src->entries[i].green,
src->entries[i].blue, src->entries[i].dither);
return 0;
}
static int palette_load_core(FILE *f, const char *file_name,
palette_t *tmp_palette,
palette_t *palette_return)
{
char buf[1024];
unsigned int line_num = 0;
unsigned int entry_num = 0;
while (1) {
int i;
BYTE values[4];
const char *p1;
int line_len = util_get_line(buf, 1024, f);
if (line_len < 0) {
break;
}
line_num++;
if (*buf == '#') {
continue;
}
p1 = next_nonspace(buf);
if (*p1 == '\0') { /* empty line */
continue;
}
for (i = 0; i < 4; i++) {
long result;
const char *p2;
if (util_string_to_long(p1, &p2, 16, &result) < 0) {
log_error(palette_log, "%s, %d: number expected.",
file_name, line_num);
return -1;
}
if (result < 0
|| (i == 3 && result > 0xf)
|| result > 0xff
|| result < 0) {
log_error(palette_log, "%s, %d: invalid value %lx.",
file_name, line_num, result);
return -1;
}
values[i] = (BYTE)result;
p1 = p2;
}
p1 = next_nonspace(p1);
if (*p1 != '\0') {
log_error(palette_log,
"%s, %d: garbage at end of line.",
file_name, line_num);
return -1;
}
if (entry_num >= palette_return->num_entries) {
log_error(palette_log,
"%s: too many entries, %d expected.", file_name,
palette_return->num_entries);
return -1;
}
if (palette_set_entry(tmp_palette, entry_num,
values[0], values[1], values[2], values[3]) < 0) {
log_error(palette_log, "Failed to set palette entry.");
return -1;
}
entry_num++;
}
if (line_num == 0) {
log_error(palette_log, "Could not read from palette file.");
return -1;
}
if (entry_num < palette_return->num_entries) {
log_error(palette_log, "%s: too few entries, %d found, %d expected.",
file_name, entry_num, palette_return->num_entries);
return -1;
}
if (palette_copy(palette_return, tmp_palette) < 0) {
log_error(palette_log, "Failed to copy palette.");
return -1;
}
return 0;
}
