implement file header removal arg

src/extract.c

@@ -3,6 +3,8 @@
 
 FILE *data_packs[DATA_FILE_NUM] = {0};
 
+bool remove_header = true;
+
 i32 extractPacks() {
     const u8 *file_name_base = "Pack/Data";
 
@@ -137,6 +139,12 @@ i32 extractPacks() {
         strcat(full_file_path, path);
         FILE *unpacked_file = fopen(full_file_path, "wb+");
 
+        // TODO: some files are under 48 bytes? which is the size of the file header?
+        if (remove_header && size > 0x30) {
+            offset += 0x30;
+            size -= 0x30;
+        }
+
         fseek(data_packs[pack], offset, SEEK_SET);
 
         u8 *file_buffer = malloc(size);

src/extract.h

@@ -16,6 +16,8 @@ typedef struct {
 // TODO: don't hardcode the number of data packs
 extern FILE *data_packs[DATA_FILE_NUM];
 
+extern bool remove_header;
+
 i32 extractPacks();
 
 #endif

src/main.c

@@ -2,9 +2,15 @@
 
 #include "extract.h"
 
-i32 main() {
+i32 main(i32 argc, u8 *argv[]) {
     printLog("pennyunpacker\n");
 
+    for (i32 i = 0; i < argc; i++) {
+        if (strcmp(argv[i], "--rmheader") == 0) {
+            remove_header = true;
+        }
+    }
+
     extractPacks();
 
     return 0;

tools/decompress_gzip.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+function decompress_if_gzipped() {
+    local file="$1"
+    local mime_type=$(file -b --mime-type "$file")
+
+    if [ "$mime_type" == "application/gzip" ]; then
+        zcat "$file" > "${file%.gz}.pvr"
+        echo "Decompressed $file to ${file%.gz}.pvr"
+    fi
+}
+
+function recursively_check_and_decompress() {
+    local directory="$1"
+    local filelist=$(find "$directory" -type f)
+
+    for file in $filelist; do
+        decompress_if_gzipped "$file"
+    done
+}
+
+for dir in Data{001..121}; do
+    if [ -d "$dir" ]; then
+        echo "processing dir: $dir"
+        recursively_check_and_decompress "$dir"
+    fi
+done