Merge branch 'main' of https://git.pernicious.games/lego-game-parser/skywalker-saga

Get up to member reading - but haven't made sense of it yet;
cpp parser for funs.
2022-05-09 17:02:07 -05:00 · 2022-05-09 17:02:02 -05:00 · 2022-05-09 14:10:29 -05:00
4 changed files with 473 additions and 3 deletions
--- a/.gitignore
+++ b/.gitignore
@ -1,3 +1,6 @@
 /bin/ 
 /obj/ 
 /.vs/ 
+Debug/
+LegoBlobReader/LegoBlobReader.vcxproj.filters
+LegoBlobReader/LegoBlobReader.vcxproj.user
--- a/LegoBlobReader/LegoBlobReader.cpp
+++ b/LegoBlobReader/LegoBlobReader.cpp
@ -0,0 +1,296 @@
+// LegoBlobReader.cpp : This file contains the 'main' function. Program execution begins and ends there.
+//
+
+#include <conio.h>
+#include <stdio.h>
+#include <malloc.h>
+#include <math.h>
+#include <algorithm>
+#include <string>
+#include <vector>
+
+typedef unsigned char byte; 
+typedef unsigned short uint16; 
+typedef unsigned int uint32; 
+typedef __int64 int64; 
+
+static char const* FILE_NAME = "GAMEPROGRESS.broke.blob"; 
+
+
+//--------------------------------------------------------------------------------------------------------
+static void FlipBytes(void* data, size_t buffer_len)
+{
+    byte* buffer = (byte*)data; 
+    size_t flip_count = buffer_len >> 1; 
+    for (size_t i = 0; i < flip_count; ++i) {
+        std::swap(buffer[i], buffer[buffer_len - i - 1]); 
+    }
+}
+
+//--------------------------------------------------------------------------------------------------------
+struct type_info_t
+{
+    std::string name; 
+    size_t byte_size; 
+
+    inline bool is_valid() const { return byte_size > 0; }
+};
+
+//--------------------------------------------------------------------------------------------------------
+//--------------------------------------------------------------------------------------------------------
+class BinaryReader
+{
+    public:
+        BinaryReader(char const* filename);
+        ~BinaryReader();
+
+        bool is_valid() const { return (nullptr != m_buffer); }
+
+    public: // accessors
+        size_t get_byte_size() const { return m_byte_size; }
+        size_t get_read_offset() const { return m_offset; }
+        size_t get_bytes_remaining() const { return get_byte_size() - get_read_offset(); }
+
+        byte* get_read_head() const { return m_buffer + m_offset; }
+
+    public: // functions
+        bool skip(size_t num_bytes); 
+        bool read_bytes(void* dst, size_t num_bytes); 
+
+        std::string read_string(); 
+
+        template <typename T>
+        T read(T const& def_value)
+        {
+            T val; 
+            if (read_bytes(&val, sizeof(T))) {
+                // FlipBytes(&val, sizeof(T)); 
+                return val; 
+            } else {
+                return def_value; 
+            }
+        }
+
+        bool read_type_info(type_info_t* out); 
+
+
+    public: // operators
+        byte operator[](size_t offset) const { return m_buffer[offset]; }
+
+    public:
+        byte* m_buffer = nullptr;
+        size_t m_byte_size = 0;
+        size_t m_offset = 0;
+};
+
+//--------------------------------------------------------------------------------------------------------
+// BinearyReader implementation
+//--------------------------------------------------------------------------------------------------------
+//--------------------------------------------------------------------------------------------------------
+BinaryReader::BinaryReader(char const* filename)
+{
+    FILE* fp = nullptr; 
+    ::fopen_s(&fp, filename, "rb");
+    if (nullptr == fp) {
+        return; 
+    }
+
+    ::fseek(fp, 0, SEEK_END); 
+    size_t eof = ::ftell(fp); 
+    ::fseek(fp, 0, SEEK_SET); 
+
+    m_buffer = (byte*) ::malloc(eof); 
+    if (nullptr != m_buffer) {
+        m_byte_size = ::fread(m_buffer, 1, eof, fp);
+    }
+
+    ::fclose(fp); 
+}
+
+//--------------------------------------------------------------------------------------------------------
+BinaryReader::~BinaryReader()
+{
+    if (nullptr != m_buffer) {
+        delete m_buffer; 
+        m_buffer = nullptr; 
+    }
+}
+
+//--------------------------------------------------------------------------------------------------------
+bool BinaryReader::skip(size_t num_bytes)
+{
+    if (get_bytes_remaining() < num_bytes) {
+        return false;
+    }
+
+    m_offset += num_bytes; 
+    return true; 
+}
+
+//--------------------------------------------------------------------------------------------------------
+bool BinaryReader::read_bytes(void* dst, size_t num_bytes)
+{
+    byte* src = get_read_head(); 
+    if (!skip(num_bytes)) {
+        return false; 
+    }
+
+    ::memcpy(dst, src, num_bytes); 
+    return true; 
+}
+
+//--------------------------------------------------------------------------------------------------------
+std::string BinaryReader::read_string()
+{
+    uint32 len = read<uint32>(0); 
+    std::string str; 
+
+    if (len > 0) {
+        str.resize(len + 1);
+        read_bytes(&str[0], len);
+        str[len] = 0;
+    }
+
+    return str; 
+}
+
+//--------------------------------------------------------------------------------------------------------
+bool BinaryReader::read_type_info(type_info_t* out)
+{
+    read<uint32>(0); // offset to next
+    read_string(); // "type"
+
+    out->name = read_string(); 
+    out->byte_size = read<uint32>(0); 
+    
+    return out->is_valid(); 
+}
+
+
+//--------------------------------------------------------------------------------------------------------
+// termination function for file reading - just prints where we left off
+//--------------------------------------------------------------------------------------------------------
+static void DisplayProgress(BinaryReader const& reader)
+{
+    size_t bytes_to_show = reader.get_bytes_remaining(); 
+    bytes_to_show = std::min<size_t>(bytes_to_show, 16); 
+    size_t offset = reader.get_read_offset(); 
+    printf("\nAt %u (0x%08x) into buffer...  Next %u byte(s) are...\n> ", offset, offset, bytes_to_show); 
+    for (size_t i = 0; i < bytes_to_show; ++i) {
+        byte b = reader[offset + i]; 
+        printf("%02X ", b); 
+    }
+    printf("<\n"); 
+}
+
+//--------------------------------------------------------------------------------------------------------
+// main file reading function
+//--------------------------------------------------------------------------------------------------------
+static void ParseBuffer(BinaryReader& reader)
+{
+    uint32 version = reader.read<uint32>(0); 
+    printf("Version: %u\n", version); 
+
+    std::string streaminfo = reader.read_string(); 
+    printf("Label: %s\n", streaminfo.c_str()); 
+
+    uint32 unknown0 = reader.read<uint32>(0);  // 0x33
+    uint32 unknown1 = reader.read<uint32>(0); // 0x01
+    uint32 unknown2 = reader.read<uint32>(0); // 0x00
+    
+    // reading a type infos
+    uint32 type_block_size = reader.read<uint32>(0); // 0x02f4
+    std::string typelist = reader.read_string();
+    uint32 type_count = reader.read<uint32>(0); // 0x1A?std::vector<type_info_t> types; 
+    printf("\nType List (%u total types)...\n", type_count);
+
+    std::vector<type_info_t> types; 
+    for (uint32 i = 0; i < type_count; ++i) {
+        type_info_t type; 
+        reader.read_type_info(&type); 
+        
+        // push even bad types in to keep the index
+        types.push_back(type); 
+        if (type.is_valid()) {
+            printf("> Type [%02u]: %s (%u B)\n", i, type.name.c_str(), type.byte_size);
+        } else {
+            printf("> Type [%02u]: REDACTED\n", i); 
+        }
+    }
+
+    // read class infos
+    uint32 class_block_size = reader.read<uint32>(0); 
+    std::string classlist = reader.read_string(); 
+    uint32 class_count = reader.read<uint32>(0); 
+
+    printf("\nClass List (%u total classes)...\n", class_count); 
+    for (uint32 i = 0; i < class_count; ++i) {
+        uint32 class_size = reader.read<uint32>(0); // to skip to end of this class
+        std::string class_id = reader.read_string(); // "Class"
+        std::string class_name = reader.read_string();
+        printf("> Class: %s\n:", class_name.c_str());
+
+        uint32 some_count = reader.read<uint32>(0);
+        std::string ver_str = reader.read_string(); // "Version"
+        uint32 ver_num_maybe = reader.read<uint32>(0);
+        uint32 offset_maybe = reader.read<uint32>(0);
+
+        std::string types_str = reader.read_string(); // "Types"
+
+        reader.skip(1); // 0
+        uint32 mem_count = reader.read<uint32>(0); // 0x07 ?
+        printf(">> member count: %u\n", mem_count);
+
+        for (uint32 mi = 0; mi < mem_count; ++mi) {
+            uint32 type_idx = reader.read<uint32>(0); // 0x02 ?
+            type_info_t const& type = types[mi];
+
+            std::string mem_name = reader.read_string(); 
+            printf(">> %s : %s;\n", mem_name.c_str(), type.name.c_str()); 
+
+            // uint16 skip_to_next = reader.read<uint16>(0); 
+            
+            /*
+            uint32 type_size = type.byte_size; 
+            if (type_size != ~0U) {
+                reader.skip(type_size);  // def value - based on type
+            }
+            */
+
+            uint32 const STOP_VALUE = 0x80'00'00'00; 
+            uint32 val = reader.read<uint32>(STOP_VALUE); 
+            while (val != STOP_VALUE) {
+                val = reader.read<uint32>(STOP_VALUE); 
+            }
+            reader.skip(8); // usually (0, 0), or (0, -1)
+        }
+    }
+
+
+    DisplayProgress(reader); 
+}
+
+//--------------------------------------------------------------------------------------------------------
+// main
+//--------------------------------------------------------------------------------------------------------
+int main()
+{
+    BinaryReader reader(FILE_NAME); 
+    if (reader.is_valid()) {
+        ParseBuffer(reader);
+    }
+
+    printf("\n\n\nPress Any Key...\n"); 
+    _getch(); 
+}
+
+// Run program: Ctrl + F5 or Debug > Start Without Debugging menu
+// Debug program: F5 or Debug > Start Debugging menu
+
+// Tips for Getting Started: 
+//   1. Use the Solution Explorer window to add/manage files
+//   2. Use the Team Explorer window to connect to source control
+//   3. Use the Output window to see build output and other messages
+//   4. Use the Error List window to view errors
+//   5. Go to Project > Add New Item to create new code files, or Project > Add Existing Item to add existing code files to the project
+//   6. In the future, to open this project again, go to File > Open > Project and select the .sln file
--- a/LegoBlobReader/LegoBlobReader.vcxproj
+++ b/LegoBlobReader/LegoBlobReader.vcxproj
@ -0,0 +1,147 @@
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+++ b/LegoSkywalkerGameProgressParser.sln
@ -1,20 +1,44 @@

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Author	SHA1	Message	Date
Chris Forseth (C4)	e49e1cffbc	Merge branch 'main' of https://git.pernicious.games/lego-game-parser/skywalker-saga	2022-05-09 17:02:07 -05:00
Chris Forseth (C4)	d718a430e0	Get up to member reading - but haven't made sense of it yet;	2022-05-09 17:02:02 -05:00
Chris Forseth (C4)	ae052f790f	cpp parser for funs.	2022-05-09 14:10:29 -05:00