alttpr-gwaa-kiwi/alttpr-baserom
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Fix/update (de)compress utils

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This commit is contained in:
karafruit
2026-01-15 03:37:02 -06:00
parent 8de358d99f
commit 727c265811
6 changed files with 45 additions and 27 deletions
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34
bin/src/decompress.c
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@@ -1,21 +1,20 @@
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <sys/stat.h>
struct section {
int mode;
int length;
char data[2];
unsigned char data[2];
int datalength;
};
int read_section(char buf[], int loc, struct section *out) {
int read_section(unsigned char buf[], int loc, struct section *out) {
int nloc = loc;
char header = buf[nloc++];
unsigned char header = buf[nloc++];
printf("%x: ", header & 0xff);
if (header == -1) {
if (header == 0xFF) {
return -1;
}
@@ -31,8 +30,6 @@ int read_section(char buf[], int loc, struct section *out) {
result.length = (header & 0x1F) + 1;
}
printf("%d: %x\n", result.mode, result.length);
switch (result.mode) {
case 0:
result.datalength = 0;
@@ -61,10 +58,15 @@ int read_section(char buf[], int loc, struct section *out) {
int main(int argc, char *argv[]) {
if (argc < 3) {
printf("Usage: %s infile outfile\n", argv[0]);
printf("Usage: %s infile outfile [start [length]]\n", argv[0]);
return 1;
}
off_t seek = 0;
if (argc > 3) {
seek = strtol(argv[3], NULL, 0);
}
FILE *inptr;
if ((inptr = fopen(argv[1], "rb")) == NULL) {
printf("%s does not exist.\n", argv[1]);
@@ -82,9 +84,15 @@ int main(int argc, char *argv[]) {
printf("Error stating file: %s\n", argv[1]);
return 1;
}
off_t size = buf.st_size;
char inbuf[size];
off_t size = buf.st_size - seek;
if (argc > 4) {
size = strtol(argv[4], NULL, 0);
}
fseek(inptr, seek, SEEK_SET);
unsigned char inbuf[size];
if (fread(inbuf, 1, size, inptr) < size) {
printf("Error reading file: %s\n", argv[1]);
@@ -93,7 +101,7 @@ int main(int argc, char *argv[]) {
fclose(inptr);
char outbuf[size * 256];
unsigned char outbuf[size * 256];
int oloc = 0;
struct section section;
@@ -141,7 +149,7 @@ int main(int argc, char *argv[]) {
}
fclose(outptr);
printf("Input file: %X bytes. Decompressed: %X bytes.\n", size, oloc);
printf("Input file: %lX bytes. Decompressed: %X bytes.\n", size, oloc);
return 0;
}