add Zip format Define.h

Define.h

@@ -0,0 +1,161 @@
+#pragma once
+
+#include <cstdint>
+
+/**   Overall .ZIP file format:
+
+      [local file header 1]   -> "PK" + 0x4b50 + ...
+      [encryption header 1]
+      [file data 1]
+      [data descriptor 1]
+      . 
+      .
+      .
+      [local file header n]   -> "PK" + 0x4b50 + ...
+      [encryption header n]
+      [file data n]
+      [data descriptor n]
+      [archive decryption header] 
+      [archive extra data record] 
+      [central directory header 1]
+      .
+      .
+      .
+      [central directory header n]   -> "PK" + 0x4b50
+      [zip64 end of central directory record]
+      [zip64 end of central directory locator] 
+      [end of central directory record]   <- 필수 포함 (단 한개)
+*/
+
+/**   Local file header:
+
+      local file header signature     4 bytes  (0x04034b50)
+      version needed to extract       2 bytes
+      general purpose bit flag        2 bytes
+      compression method              2 bytes
+      last mod file time              2 bytes
+      last mod file date              2 bytes
+      crc-32                          4 bytes
+      compressed size                 4 bytes
+      uncompressed size               4 bytes
+      file name length                2 bytes   -> Variable
+      extra field length              2 bytes   -> Variable
+
+      file name (variable size)
+      extra field (variable size)
+ */
+
+#pragma pack(push, 1)
+constexpr int LOCAL_FILE_HEADER_BYTE = 30;
+
+ struct LocalFileHeader {
+      uint32_t signature;
+      uint16_t versionNeededToExtract;
+      uint16_t generalBitFlag;
+      uint16_t compressionMethod;   // no compression == 0
+      uint16_t lastModTime;   // 압축 시점의 시간 (1980년 기준 시간)
+      uint16_t lastModDate;   // 압축 시점의 날짜 (1980년 기준 연도)
+      uint32_t crc32;
+      uint32_t compressedSize;  // same as unCompression (cuz no compreesion)
+      uint32_t unCompressedSize;
+      uint16_t fileNameLength;
+      uint16_t extraFieldLength;
+
+      // var[fileNameLength] fileName
+      // var[extraFieldLength] extraField
+ };
+
+/**   Central directory structure:
+
+      [central directory header 1]
+      .
+      .
+      . 
+      [central directory header n]
+      [digital signature] 
+
+      File header:
+
+        central file header signature   4 bytes  (0x02014b50)
+        version made by                 2 bytes
+        version needed to extract       2 bytes
+        general purpose bit flag        2 bytes
+        compression method              2 bytes
+        last mod file time              2 bytes
+        last mod file date              2 bytes
+        crc-32                          4 bytes
+        compressed size                 4 bytes
+        uncompressed size               4 bytes
+        file name length                2 bytes
+        extra field length              2 bytes
+        file comment length             2 bytes
+        disk number start               2 bytes
+        internal file attributes        2 bytes
+        external file attributes        4 bytes
+        relative offset of local header 4 bytes
+
+        file name (variable size)
+        extra field (variable size)
+        file comment (variable size)
+ */
+
+ constexpr int CENTRAL_DIRECTORY_BYTE = 46;
+ struct CentralDirectory {
+
+      uint32_t signature;
+      uint16_t versionMadeBy;
+      uint16_t versionNeededToExtract;
+      uint16_t generalBitFlag;
+      uint16_t compressionMethod;   // no compression == 0
+      uint16_t lastModTime;   // 압축 시점의 시간 (1980년 기준 시간)
+      uint16_t lastModDate;   // 압축 시점의 날짜 (1980년 기준 연도)
+      uint32_t crc32;
+      uint32_t compressedSize;  // same as unCompression (cuz no compreesion)
+      uint32_t unCompressedSize;
+      uint16_t fileNameLength;
+      uint16_t extraFieldLength;
+      uint16_t fileCommentLength;
+
+      uint16_t diskNumStart;
+      uint16_t attributeInternal;
+      uint32_t attributeExternal;
+      uint32_t offsetLocalHeader;
+
+      // var[fileNameLength] fileName
+      // var[extraFieldLength] extraField
+      // var[fileCommentLength] fileComment
+};
+
+ /**  End of central directory record:
+
+      end of central dir signature    4 bytes  (0x0605 + 4b50)
+      number of this disk             2 bytes
+      number of the disk with the
+      start of the central directory  2 bytes
+      total number of entries in the
+      central directory on this disk  2 bytes
+      total number of entries in
+      the central directory           2 bytes
+      size of the central directory   4 bytes
+      offset of start of central
+      directory with respect to
+      the starting disk number        4 bytes
+      .ZIP file comment length        2 bytes
+      .ZIP file comment       (variable size)
+*/
+ constexpr int EOCD_BYTE = 22;
+
+ struct EoCDRecord {
+      uint32_t signature;
+      uint16_t diskNumber;
+      uint16_t diskNumber_CentralDirectoryStart;
+      uint16_t numOfCentralDirectory;   // TODO : 이름 애매함.
+      uint16_t numEntries;              // TODO : 이름 애매함.
+      uint32_t centralDirectorySize;
+      uint32_t centralDirectoryOffset;
+      uint16_t zipFileCommentLength;
+
+      // var[zipFileCommentLength] zipFileComment
+};
+
+#pragma pack(pop)

MyZip.vcxproj

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
@@ -125,6 +125,9 @@
   <ItemGroup>
     <ClCompile Include="main.cpp" />
   </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="Define.h" />
+  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>

main.cpp

@@ -1,6 +1,46 @@
 #include <cstdio>
+#include "Define.h"
+
+void Zipper();
 
 int main()
 {
-	std::printf("Hello Zip! \r\n");
+	std::printf("==================== Hello Zip! ====================\r\n");
+
+	int iRet = 0;
+
+	int iSizeTest = sizeof(LocalFileHeader);
+	if (LOCAL_FILE_HEADER_BYTE != iSizeTest)
+	{
+		std::printf("1 Wrong Header Size : %d / %d \r\n", iSizeTest, LOCAL_FILE_HEADER_BYTE);
+		iRet = -1;
+	}
+	iSizeTest = sizeof(CentralDirectory);
+	if (CENTRAL_DIRECTORY_BYTE != iSizeTest)
+	{
+		std::printf("2 Wrong Header Size : %d / %d \r\n", iSizeTest, CENTRAL_DIRECTORY_BYTE);
+		iRet = -1;
+	}
+	iSizeTest = sizeof(EoCDRecord);
+	if (EOCD_BYTE != iSizeTest)
+	{
+		std::printf("3 Wrong Header Size : %d / %d \r\n", iSizeTest, EOCD_BYTE);
+		iRet = -1;
+	}
+
+	if (iRet != -1)
+	{
+		Zipper();
+	}
+
+	return 0;
+}
+
+void Zipper()
+{
+	LocalFileHeader LFHeader;
+	CentralDirectory CentDirec;
+	EoCDRecord ECDR;
+
+
 }