Fix Stuffit5 conv and some code cleanup.

CMakeLists.txt

@@ -70,7 +70,7 @@ set(MACONV_SRC
     "src/main.cc"
 )
 
-# Include "src" and "vendors" folder for resolving #include.
+# Include "src" and "vendors" folders for resolving #include.
 include_directories("src" "vendors")
 
 

docs/formats/MacBinary.md

@@ -37,7 +37,7 @@ Data are arranged as follows:
 | 102 **³**  | Word       | Signature for indentification purposes (always `mBIN`) |
 | 106 **³**  | Byte       | Script of file name (from the fdScript field of an fxInfo record) |
 | 107 **³**  | Byte       | Extended Finder flags (from the fdXFlags field of an fxInfo record) |
-| 108-115    |            | Unused (must be zeroed by creators, must be ignored by readers) |
+| 108        | 8 Bytes    | Unused (must be zeroed by creators, must be ignored by readers) |
 | 116 **²**  | Word       | Length of total files when packed files are unpacked. As of the writing of this document, this field has never been used. |
 | 120 **²**  | Half       | Length of a secondary header. If this is non-zero, skip this many bytes (rounded up to the next multiple of 128). This is for future expansion only, when sending files with MacBinary, this word should be zero. |
 | 122 **²**  | Byte       | Version number of MacBinary (`129` for MacBinary II, `130` for MacBinary III) |
@@ -52,13 +52,13 @@ Cyclic redundancy check (CRC) used in header is CRC-16-CCITT, i.e. uses
 polynomial number `0x1021` and starts with `0`.
 
 
-## Data and ressource forks.
+## Data and ressource forks
 
-Data fork directly follow the header (at byte 128). The length of these data
+Data fork directly follows the header (at byte 128). The length of these data
 (which can be zero) must correspond with the length given in the header (at byte
 83).
 
-Data are completed with some padding bytes (normally `0x00` but some
+Data are completed with some padding bytes (usually `0x00` but some
 implementations use `0x7F`) until the total length of file is a multiple of 128.
 If the total length is already a multiple of 128 after adding the data fork, no
 padding is added.

src/conv/macbinary.cc

@@ -178,7 +178,7 @@ void WriteMacBinary(fs::File &file, fs::FileWriter &base)
     writer.Fill(0x0, 2);
     writer.WriteByte(file.flags & 0xFF);
 
-    // Write MacBinray III magic strings/numbers.
+    // Write MacBinary III magic strings/numbers.
     writer.WriteString("mBIN");
     writer.Fill(0x0, 16);
     writer.WriteByte(130);

src/main.cc

@@ -39,7 +39,7 @@ extern "C" void LogDebug(const char *fmt, ...)
     va_list args;
     va_start(args, fmt);
 
-    vfprintf(stderr, fmt, args);
+    vprintf(fmt, args);
     va_end(args);
     printf("\n");
 }

src/stuffit/methods/algorithm13.cc

@@ -320,7 +320,7 @@ constexpr int kLzssEnd = -2;
 void Algorithm13Method::InitializeLZSS()
 {
     int val = *(input.data++);
-    int code = (val >> 4);
+    int code = ((val & 0xFF) >> 4);
 
     if (code == 0) {
         HuffmanDecoder metacode;

src/stuffit/stuffit.cc

@@ -26,6 +26,7 @@ this program.  If not, see <https://www.gnu.org/licenses/>.
 
 #include <path.hpp>
 #include <cstdarg>
+#include <algorithm>
 
 namespace maconv {
 namespace stuffit {
@@ -61,6 +62,7 @@ static void ExtractFork(StuffitEntry &ent, bool is_res, fs::File &file,
         return (void)WarnForkError(ent, is_res, "compression method %u not supported", info.method);
 
     // Try extracting the fork.
+    LogDebug("  Extracting %s fork using algo %d", (is_res ? "ressource" : "data"), info.method);
     try {
         ptr->Extract(info, data, file.mem_pool);
     } catch (ExtractException &e) {
@@ -96,6 +98,7 @@ static void ExtractFile(fs::FileReader &reader, StuffitEntry &ent,
 
     // Log information to user.
     std::string filename = dest_folder + "/" + GetFilenameFor(ent.name, prefered_conv);
+    filename.erase(std::remove(filename.begin(), filename.end(), '\r'), filename.end());
     LogDebug("Extracting %s ...", filename.c_str());
 
     // Uncompress forks (if not empty).

src/stuffit/stuffit_v5.cc

@@ -3,6 +3,9 @@
 Extract files from Stuffit (v5) archives.
 See docs/stuffit/Stuffit_v5.md for more information on this format.
 
+The code in this file is based on TheUnarchiver.
+See README.md and docs/licenses/TheUnarchiver.txt for more information.
+
 Copyright (C) 2019, Guillaume Gonnet
 
 This program is free software: you can redistribute it and/or modify it under
@@ -30,6 +33,7 @@ namespace stuffit {
 
 // Stuffit (v5) entity flags.
 constexpr uint8_t kFlagDirectory = 0x40;
+constexpr uint8_t kFlagCrypted = 0x20;
 constexpr uint8_t kFlagHasRessource = 0x1;
 
 
@@ -85,7 +89,8 @@ static void ReadFileHeader(fs::FileReader &reader, StuffitEntry &ent)
     reader.Skip(1);
 
     // Read flags for knowing if entry is a file or a folder.
-    ent.etype = (reader.ReadByte() & kFlagDirectory) ? StuffitEntryType::Folder
+    int flags = reader.ReadByte();
+    ent.etype = (flags & kFlagDirectory) ? StuffitEntryType::Folder
         : StuffitEntryType::File;
 
     // Read creation and modification dates.
@@ -99,10 +104,10 @@ static void ReadFileHeader(fs::FileReader &reader, StuffitEntry &ent)
 
     // Read name and data lengths.
     uint16_t name_length = reader.ReadHalfBE();
-    reader.Skip(2);
+    reader.Skip(2);  // Skip header CRC.
     ent.data.size = reader.ReadWordBE();
     ent.data.comp_size = reader.ReadWordBE();
-    reader.Skip(4);
+    reader.Skip(4);  // Skip data CRC.
 
 
     // The entry is a folder: read the number of files.
@@ -120,7 +125,7 @@ static void ReadFileHeader(fs::FileReader &reader, StuffitEntry &ent)
     else {
         ent.num_files = 0;
         ent.data.method = reader.ReadByte();
-        reader.Skip(1);
+        reader.Skip(1);  // Skip password length (as archive is not encrypted).
     }
 
 
@@ -149,9 +154,9 @@ static void ReadFileHeader(fs::FileReader &reader, StuffitEntry &ent)
     if (has_res) {
         ent.res.size = reader.ReadWordBE();
         ent.res.comp_size = reader.ReadWordBE();
-        reader.Skip(4);
+        reader.Skip(4);  // Skip ressource CRC.
         ent.res.method = reader.ReadByte();
-        reader.Skip(1);
+        reader.Skip(1);  // Skip password length (as archive is not encrypted).
     } else {
         ent.res.size = 0;
         ent.res.comp_size = 0;
@@ -163,11 +168,11 @@ static void ReadFileHeader(fs::FileReader &reader, StuffitEntry &ent)
 
 
     // Set data and res offsets.
-    ent.data.offset = reader.Tell();
-    ent.res.offset = ent.data.offset + ent.data.comp_size;
+    ent.res.offset = reader.Tell();
+    ent.data.offset = ent.res.offset + ent.res.comp_size;
 
     // Seek to the next entry (if it's a file).
-    reader.Seek(ent.res.offset + ent.res.comp_size);
+    reader.Seek(ent.data.offset + ent.data.comp_size);
 }
 
 

src/stuffit/utils/huffman.cc

@@ -204,16 +204,16 @@ void HuffmanDecoder::MakeTableRecursLE(int node, HuffmanTableEntry *table,
     int curr_table_size = (1 << (table_size - depth));
     int curr_stride = (1 << depth);
 
-	if (IsLeafNode(node)) {
+    if (IsInvalidNode(node)) {
+        for (int i = 0; i < curr_table_size; i++)
+            table[i * curr_stride].length = -1;
+    }
+    else if (IsLeafNode(node)) {
         for (int i = 0; i < curr_table_size; i++) {
             table[i * curr_stride].length = depth;
             table[i * curr_stride].value = LeafValue(node);
         }
     }
-	else if (IsInvalidNode(node)) {
-		for (int i = 0; i < curr_table_size; i++)
-            table[i * curr_stride].length = -1;
-	}
     else {
         if (depth == table_size) {
             table[0].length = table_size + 1;