windows下通过qt使用zlib将文件夹压缩成zip格式,并且能解析
时间: 2024-01-24 22:02:27 浏览: 217
在Windows下通过Qt使用zlib库将文件夹压缩成zip格式,可以按照以下步骤进行:
1. 下载zlib库并添加到Qt项目中。在Qt Creator中打开项目,右键单击项目文件夹,选择Add Library->External Library->System Library->C++ Library,将zlib库添加到项目中。
2. 在代码中包含zlib.h头文件,并使用zipOpen、zipFileAdd、zipClose等函数实现压缩。例如:
```C++
#include "zlib.h"
#include <QDir>
#include <QFile>
#include <QDebug>
bool zipDirectory(const QString& sourceDir, const QString& zipFile)
{
bool result = false;
QDir dir(sourceDir);
if (!dir.exists())
return result;
QFile file(zipFile);
if (file.open(QIODevice::WriteOnly))
{
zipFile zf = zipOpen(zipFile.toUtf8().constData(), APPEND_STATUS_CREATE);
QDirIterator iter(sourceDir, QDir::Files | QDir::Dirs | QDir::NoDotAndDotDot, QDirIterator::Subdirectories);
while (iter.hasNext())
{
iter.next();
QString filePath = iter.filePath().replace(sourceDir, "");
QFile file(iter.filePath());
if (file.open(QIODevice::ReadOnly))
{
zip_fileinfo fileInfo = { 0 };
zipOpenNewFileInZip(zf, filePath.toUtf8().constData(), &fileInfo, NULL, 0, NULL, 0, NULL, Z_DEFLATED, Z_DEFAULT_COMPRESSION);
zipWriteInFileInZip(zf, file.readAll().data(), file.size());
zipCloseFileInZip(zf);
file.close();
}
else
{
qWarning() << "Failed to open file: " << iter.filePath();
}
}
zipClose(zf, NULL);
file.close();
result = true;
}
else
{
qWarning() << "Failed to create zip file: " << zipFile;
}
return result;
}
```
3. 解压zip文件同样可以使用zlib库中的函数。例如:
```C++
#include "zlib.h"
#include <QFile>
#include <QDebug>
bool unzipFile(const QString& zipFile, const QString& targetDir)
{
bool result = false;
QFile file(zipFile);
if (file.open(QIODevice::ReadOnly))
{
zipFile zf = zipOpen(zipFile.toUtf8().constData(), 0);
if (zf != NULL)
{
int err = ZIP_OK;
char buffer[4096] = { 0 };
zip_fileinfo fileInfo = { 0 };
QDir dir(targetDir);
while (err == ZIP_OK)
{
zip_fileinfo fileInfo = { 0 };
char fileName[MAX_PATH] = { 0 };
err = zipReadCurrentFileInfo(zf, &fileInfo, fileName, MAX_PATH, NULL, 0, NULL, 0);
if (err == ZIP_OK)
{
QString filePath = QString("%1/%2").arg(targetDir).arg(fileName);
if (fileInfo.external_fa & 0x10)
{
// directory
dir.mkpath(filePath);
}
else
{
// file
QFile outFile(filePath);
if (outFile.open(QIODevice::WriteOnly))
{
zip_fread(zf, buffer, sizeof(buffer));
while (zip_ferror(zf) == ZIP_OK)
{
outFile.write(buffer, zip_fread(zf, buffer, sizeof(buffer)));
}
outFile.close();
}
else
{
qWarning() << "Failed to create file: " << filePath;
}
}
zipCloseFileInZip(zf);
}
}
zipClose(zf, NULL);
result = true;
}
else
{
qWarning() << "Failed to open zip file: " << zipFile;
}
file.close();
}
else
{
qWarning() << "Failed to open zip file: " << zipFile;
}
return result;
}
```
注意:以上示例代码仅供参考,具体实现需要根据实际情况进行调整和完善。
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