怎么用7z的源码解压tar.gz压缩包
时间: 2024-04-27 11:19:56 浏览: 184
您可以按照以下步骤使用7z的源码解压tar.gz压缩包:
1. 首先,您需要下载7z源码并解压缩。您可以从以下链接下载源码:https://www.7-zip.org/download.html
2. 解压缩源码后,找到“CPP\7zip\UI\Client7z”目录,其中包含7z的命令行界面。
3. 然后,您需要将tar.gz压缩包移动到7z的命令行界面所在的目录。
4. 打开命令行界面,并输入以下命令:
```
7z x filename.tar.gz
```
其中,“filename.tar.gz”是您要解压缩的压缩包的文件名。
5. 然后,7z将开始解压缩tar.gz压缩包,并将文件提取到当前目录。
6. 解压缩完成后,您可以在当前目录中找到解压缩的文件。
请注意,7z需要安装在您的计算机上,以便您可以使用其命令行界面。此外,7z的命令行界面也可用于解压缩其他类型的压缩包,如zip、rar等。
相关问题
如何用7z源码,解压tar.gz压缩包。请用c++写一段代码实现
可以使用libarchive库来解压缩tar.gz压缩包,以下是使用7z源码解压缩的C++代码示例:
```c++
#include <iostream>
#include <cstring>
#include <cstdio>
#include "7z.h"
#include "7zAlloc.h"
#include "7zCrc.h"
#include "7zFile.h"
#include "7zVersion.h"
using namespace std;
int extract_tar_gz(const char* archive, const char* extract_path){
CFileInStream archiveStream;
CLookToRead lookStream;
CSzArEx db;
SRes res;
UInt16 *temp = NULL;
size_t tempSize = 0;
int extractCount = 0;
ISzAlloc allocImp;
ISzAlloc allocTempImp;
allocImp.Alloc = SzAlloc;
allocImp.Free = SzFree;
allocTempImp.Alloc = SzAllocTemp;
allocTempImp.Free = SzFreeTemp;
CrcGenerateTable();
if (InFile_Open(&archiveStream.file, archive)){
cout << "Error: Can not open file " << archive << endl;
return -1;
}
FileInStream_CreateVTable(&archiveStream);
LookToRead_CreateVTable(&lookStream, False);
lookStream.realStream = &archiveStream.s;
LookToRead_Init(&lookStream);
SzArEx_Init(&db);
res = SzArEx_Open(&db, &lookStream.s, &allocImp, &allocTempImp);
if (res != SZ_OK){
cout << "Error: Can not open archive " << archive << endl;
return -1;
}
for (UInt32 i = 0; i < db.NumFiles; i++){
size_t offset = 0;
size_t outSizeProcessed = 0;
const CSzFileItem* fileItem = db.Files + i;
size_t len = SzArEx_GetFileNameUtf16(&db, i, NULL);
if (len > tempSize){
SzFree(NULL, temp);
tempSize = len;
temp = (UInt16*)SzAlloc(NULL, tempSize * sizeof(temp[0]));
}
SzArEx_GetFileNameUtf16(&db, i, temp);
char* filename = (char*)malloc(len * 2 + 1);
wcstombs(filename, (wchar_t*)temp, len * 2 + 1);
if (fileItem->IsDir){
continue;
}
if(strstr(filename, ".tar.gz") == NULL){
continue;
}
char cmd[100];
sprintf(cmd, "7z x -so \"%s\" 2>/dev/null | tar -xz -C \"%s\"", filename, extract_path);
system(cmd);
extractCount++;
free(filename);
}
SzArEx_Free(&db, &allocImp);
SzFree(NULL, temp);
File_Close(&archiveStream.file);
return extractCount;
}
int main(){
extract_tar_gz("test.tar.gz", "extract_path");
return 0;
}
```
代码中调用了系统的tar和7z命令,需要在Linux下运行。如果是在Windows下运行,需要修改命令行中的路径分隔符和/dev/null为nul。
如何用7z源码编译出来的7z.dll解压tar.gz压缩包。请用c++写一段代码实现
可以使用7z库中的解压函数来完成解压操作。下面是一个简单的示例代码,实现从tar.gz压缩包中解压出所有文件:
```c++
#include <iostream>
#include <Windows.h>
#include "7z.h"
#include "7zFile.h"
#include "7zAlloc.h"
int main() {
const wchar_t* archivepath = L"path/to/your/archive.tar.gz";
const wchar_t* outdir = L"path/to/output/directory";
HANDLE hArchive = CreateFileW(archivepath, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (hArchive == INVALID_HANDLE_VALUE) {
std::cerr << "Failed to open archive: " << GetLastError() << std::endl;
return 1;
}
CFileInStream archiveStream;
archiveStream.file = hArchive;
archiveStream.s.Read = [](void* p, void* buf, size_t size, size_t* processedSize) -> SRes {
HANDLE handle = ((CFileInStream*)p)->file;
if (!ReadFile(handle, buf, (DWORD)size, (DWORD*)processedSize, NULL)) {
return SZ_ERROR_READ;
}
return SZ_OK;
};
CArchiveLink archiveLink;
archiveLink.InStream = &archiveStream.s;
archiveLink.InStream->Seek(&archiveStream.s, 0, SEEK_SET);
archiveLink.Arc.LibOpen = [](const wchar_t* name, int mode) -> void* {
return NULL; // no need to open shared library on Windows
};
archiveLink.Arc.LibClose = [](void* lib) -> int {
return 0; // no need to close shared library on Windows
};
archiveLink.Arc.LibSym = [](void* lib, const char* name) -> void* {
return NULL; // no need to get function address on Windows
};
ISzAlloc allocImp = { SzAlloc, SzFree };
ISzAlloc tempAllocImp = { SzAllocTemp, SzFreeTemp };
CMyComPtr<IInArchive> archive;
HRESULT hr = CreateObject(CLASS_CFormat7z, &IID_IInArchive, (void**)&archive);
if (hr != S_OK) {
std::cerr << "Failed to create archive object: " << hr << std::endl;
CloseHandle(hArchive);
return 1;
}
hr = archive->Open(&archiveLink.Arc, &allocImp, &tempAllocImp);
if (hr != S_OK) {
std::cerr << "Failed to open archive: " << hr << std::endl;
CloseHandle(hArchive);
return 1;
}
UInt32 numItems = 0;
hr = archive->GetNumberOfItems(&numItems);
if (hr != S_OK) {
std::cerr << "Failed to get number of items in archive: " << hr << std::endl;
CloseHandle(hArchive);
return 1;
}
for (UInt32 i = 0; i < numItems; i++) {
CMyComPtr<IArchiveExtractCallback> extractCallback = new CArchiveExtractCallback(outdir);
hr = archive->Extract(&i, 1, false, extractCallback);
if (hr != S_OK) {
std::cerr << "Failed to extract item " << i << " from archive: " << hr << std::endl;
}
}
archive->Close();
CloseHandle(hArchive);
return 0;
}
```
这段代码包含了7z库的头文件以及函数调用,需要在编译时链接7z库。可以使用以下命令来编译:
```
g++ -o extract extract.cpp -l7z
```
其中extract.cpp是保存上述代码的文件名,extract是可执行文件的名称。
阅读全文