blocks|key|1290740|text|我想要类似的东西，并且正在搜索(徒劳无功)，所以这就是我要做的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1290741|static+bool+cpDir(const+QString+&srcPath,+const+QString+&dstPath)
{
++++rmDir(dstPath);
++++QDir+parentDstDir(QFileInfo(dstPath).path());
++++if+(!parentDstDir.mkdir(QFileInfo(dstPath).fileName()))
++++++++return+false;

++++QDir+srcDir(srcPath);
++++foreach(const+QFileInfo+&info,+srcDir.entryInfoList(QDir::Dirs+%7C+QDir::Files+%7C+QDir::NoDotAndDotDot))+{
++++++++QString+srcItemPath+=+srcPath+%2B+"/"+%2B+info.fileName();
++++++++QString+dstItemPath+=+dstPath+%2B+"/"+%2B+info.fileName();
++++++++if+(info.isDir())+{
++++++++++++if+(!cpDir(srcItemPath,+dstItemPath))+{
++++++++++++++++return+false;
++++++++++++}
++++++++}+else+if+(info.isFile())+{
++++++++++++if+(!QFile::copy(srcItemPath,+dstItemPath))+{
++++++++++++++++return+false;
++++++++++++}
++++++++}+else+{
++++++++++++qDebug()+<<+"Unhandled+item"+<<+info.filePath()+<<+"in+cpDir";
++++++++}
++++}
++++return+true;
}|code-block|syntax|javascript|1290742|它使用了一个看起来非常类似的rmDir函数：|offset|length|style|CODE|1290743|static+bool+rmDir(const+QString+&dirPath)
{
++++QDir+dir(dirPath);
++++if+(!dir.exists())
++++++++return+true;
++++foreach(const+QFileInfo+&info,+dir.entryInfoList(QDir::Dirs+%7C+QDir::Files+%7C+QDir::NoDotAndDotDot))+{
++++++++if+(info.isDir())+{
++++++++++++if+(!rmDir(info.filePath()))
++++++++++++++++return+false;
++++++++}+else+{
++++++++++++if+(!dir.remove(info.fileName()))
++++++++++++++++return+false;
++++++++}
++++}
++++QDir+parentDir(QFileInfo(dirPath).path());
++++return+parentDir.rmdir(QFileInfo(dirPath).fileName());
}|1290744|这不处理链接和特殊文件，顺便说一句。|1290745|entityMap^0|0|0|E|5|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@$I|V|J|W|K|L]]|9|@]|A|$]]|$1|M|3|N|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

I wanted something similar, and was googling (in vain), so this is where I've got to:

<pre><code>static bool cpDir(const QString &amp;srcPath, const QString &amp;dstPath)
{
 rmDir(dstPath);
 QDir parentDstDir(QFileInfo(dstPath).path());
 if (!parentDstDir.mkdir(QFileInfo(dstPath).fileName()))
 return false;

 QDir srcDir(srcPath);
 foreach(const QFileInfo &amp;info, srcDir.entryInfoList(QDir::Dirs | QDir::Files | QDir::NoDotAndDotDot)) {
 QString srcItemPath = srcPath + "/" + info.fileName();
 QString dstItemPath = dstPath + "/" + info.fileName();
 if (info.isDir()) {
 if (!cpDir(srcItemPath, dstItemPath)) {
 return false;
 }
 } else if (info.isFile()) {
 if (!QFile::copy(srcItemPath, dstItemPath)) {
 return false;
 }
 } else {
 qDebug() &lt;&lt; "Unhandled item" &lt;&lt; info.filePath() &lt;&lt; "in cpDir";
 }
 }
 return true;
}
</code></pre>

It uses an <code>rmDir</code> function that looks pretty similar:

<pre><code>static bool rmDir(const QString &amp;dirPath)
{
 QDir dir(dirPath);
 if (!dir.exists())
 return true;
 foreach(const QFileInfo &amp;info, dir.entryInfoList(QDir::Dirs | QDir::Files | QDir::NoDotAndDotDot)) {
 if (info.isDir()) {
 if (!rmDir(info.filePath()))
 return false;
 } else {
 if (!dir.remove(info.fileName()))
 return false;
 }
 }
 QDir parentDir(QFileInfo(dirPath).path());
 return parentDir.rmdir(QFileInfo(dirPath).fileName());
}
</code></pre>

This doesn't handle links and special files, btw.

blocks|key|1075812|text|void+copyPath(QString+src,+QString+dst)
{
++++QDir+dir(src);
++++if+(!+dir.exists())
++++++++return;

++++foreach+(QString+d,+dir.entryList(QDir::Dirs+%7C+QDir::NoDotAndDotDot))+{
++++++++QString+dst_path+=+dst+%2B+QDir::separator()+%2B+d;
++++++++dir.mkpath(dst_path);
++++++++copyPath(src%2B+QDir::separator()+%2B+d,+dst_path);
++++}

++++foreach+(QString+f,+dir.entryList(QDir::Files))+{
++++++++QFile::copy(src+%2B+QDir::separator()+%2B+f,+dst+%2B+QDir::separator()+%2B+f);
++++}
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1075813|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>void copyPath(QString src, QString dst)
{
 QDir dir(src);
 if (! dir.exists())
 return;

 foreach (QString d, dir.entryList(QDir::Dirs | QDir::NoDotAndDotDot)) {
 QString dst_path = dst + QDir::separator() + d;
 dir.mkpath(dst_path);
 copyPath(src+ QDir::separator() + d, dst_path);
 }

 foreach (QString f, dir.entryList(QDir::Files)) {
 QFile::copy(src + QDir::separator() + f, dst + QDir::separator() + f);
 }
}
</code></pre>

blocks|key|1075850|text|试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1075851|bool+copyDirectoryFiles(const+QString+&fromDir,+const+QString+&toDir,+bool+coverFileIfExist)
{
++++QDir+sourceDir(fromDir);
++++QDir+targetDir(toDir);
++++if(!targetDir.exists()){++++/*+if+directory+don't+exists,+build+it+*/
++++++++if(!targetDir.mkdir(targetDir.absolutePath()))
++++++++++++return+false;
++++}

++++QFileInfoList+fileInfoList+=+sourceDir.entryInfoList();
++++foreach(QFileInfo+fileInfo,+fileInfoList){
++++++++if(fileInfo.fileName()+==+"."+%7C%7C+fileInfo.fileName()+==+"..")
++++++++++++continue;

++++++++if(fileInfo.isDir()){++++/*+if+it+is+directory,+copy+recursively*/
++++++++++++if(!copyDirectoryFiles(fileInfo.filePath(),++
++++++++++++++++targetDir.filePath(fileInfo.fileName()),+
++++++++++++++++coverFileIfExist))+
++++++++++++++++return+false;
++++++++}
++++++++else{++++++++++++/*+if+coverFileIfExist+==+true,+remove+old+file+first+*/
++++++++++++if(coverFileIfExist+&&+targetDir.exists(fileInfo.fileName())){
++++++++++++++++targetDir.remove(fileInfo.fileName());
++++++++++++}

++++++++++++//+files+copy
++++++++++++if(!QFile::copy(fileInfo.filePath(),++
++++++++++++++++targetDir.filePath(fileInfo.fileName()))){+
++++++++++++++++++++return+false;
++++++++++++}
++++++++}
++++}
++++return+true;
}|code-block|syntax|javascript|1075852|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try this:

<pre><code>bool copyDirectoryFiles(const QString &amp;fromDir, const QString &amp;toDir, bool coverFileIfExist)
{
 QDir sourceDir(fromDir);
 QDir targetDir(toDir);
 if(!targetDir.exists()){ /* if directory don't exists, build it */
 if(!targetDir.mkdir(targetDir.absolutePath()))
 return false;
 }

 QFileInfoList fileInfoList = sourceDir.entryInfoList();
 foreach(QFileInfo fileInfo, fileInfoList){
 if(fileInfo.fileName() == "." || fileInfo.fileName() == "..")
 continue;

 if(fileInfo.isDir()){ /* if it is directory, copy recursively*/
 if(!copyDirectoryFiles(fileInfo.filePath(), 
 targetDir.filePath(fileInfo.fileName()), 
 coverFileIfExist)) 
 return false;
 }
 else{ /* if coverFileIfExist == true, remove old file first */
 if(coverFileIfExist &amp;&amp; targetDir.exists(fileInfo.fileName())){
 targetDir.remove(fileInfo.fileName());
 }

 // files copy
 if(!QFile::copy(fileInfo.filePath(), 
 targetDir.filePath(fileInfo.fileName()))){ 
 return false;
 }
 }
 }
 return true;
}
</code></pre>

blocks|key|1290863|text|我制作了一个通过shell命令风格的API来操作文件的库。它支持文件的递归副本，并处理了更多的条件。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1290864|https://github.com/benlau/qtshell#cp|offset|length|1290865|示例|1290866|cp("-a",+":/*",+"/target");+//+copy+all+files+from+qrc+resource+to+target+path+recursively

cp("tmp.txt",+"/tmp");

cp("*.txt",+"/tmp");

cp("/tmp/123.txt",+"456.txt");

cp("-va","src/*",+"/tmp");

cp("-a",+":resource","/target");|code-block|syntax|javascript|1290867|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|10|0|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@]|9|@$D|V|E|W|1|X]]|A|$]]|$1|F|3|G|5|6|7|Y|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|Z|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|C]]]]

I have made a library to manipulate files by a shell command style API. It supports a recursively copy of files and handled several more conditions. 

<a href="https://github.com/benlau/qtshell#cp" rel="nofollow noreferrer">https://github.com/benlau/qtshell#cp</a>

Example

<pre class="lang-html prettyprint-override"><code>cp("-a", ":/*", "/target"); // copy all files from qrc resource to target path recursively

cp("tmp.txt", "/tmp");

cp("*.txt", "/tmp");

cp("/tmp/123.txt", "456.txt");

cp("-va","src/*", "/tmp");

cp("-a", ":resource","/target");
</code></pre>

blocks|key|1290906|text|由于我在macOS上使用App-Bundles时遇到了一些问题，这里有一个使用QDirIterator的解决方案|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1290907|void+copyAndReplaceFolderContents(const+QString+&fromDir,+const+QString+&toDir,+bool+copyAndRemove+=+false)+{
QDirIterator+it(fromDir,+QDirIterator::Subdirectories);
QDir+dir(fromDir);
const+int+absSourcePathLength+=+dir.absoluteFilePath(fromDir).length();

while+(it.hasNext()){
++++it.next();
++++const+auto+fileInfo+=+it.fileInfo();
++++if(!fileInfo.isHidden())+{+//filters+dot+and+dotdot
++++++++const+QString+subPathStructure+=+fileInfo.absoluteFilePath().mid(absSourcePathLength);
++++++++const+QString+constructedAbsolutePath+=+toDir+%2B+subPathStructure;
++++++++
++++++++if(fileInfo.isDir()){
++++++++++++//Create+directory+in+target+folder
++++++++++++dir.mkpath(constructedAbsolutePath);
++++++++}+else+if(fileInfo.isFile())+{
++++++++++++//Copy+File+to+target+directory

++++++++++++//Remove+file+at+target+location,+if+it+exists.+Otherwise+QFile::copy+will+fail
++++++++++++QFile::remove(constructedAbsolutePath);
++++++++++++QFile::copy(fileInfo.absoluteFilePath(),+constructedAbsolutePath);
++++++++}
++++}
}

if(copyAndRemove)
++++dir.removeRecursively();|code-block|syntax|javascript|1290908|}|1290909|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Since I had some trouble with App-Bundles on macOS, here's a solution with QDirIterator
<pre><code>void copyAndReplaceFolderContents(const QString &amp;fromDir, const QString &amp;toDir, bool copyAndRemove = false) {
QDirIterator it(fromDir, QDirIterator::Subdirectories);
QDir dir(fromDir);
const int absSourcePathLength = dir.absoluteFilePath(fromDir).length();

while (it.hasNext()){
 it.next();
 const auto fileInfo = it.fileInfo();
 if(!fileInfo.isHidden()) { //filters dot and dotdot
 const QString subPathStructure = fileInfo.absoluteFilePath().mid(absSourcePathLength);
 const QString constructedAbsolutePath = toDir + subPathStructure;
 
 if(fileInfo.isDir()){
 //Create directory in target folder
 dir.mkpath(constructedAbsolutePath);
 } else if(fileInfo.isFile()) {
 //Copy File to target directory

 //Remove file at target location, if it exists. Otherwise QFile::copy will fail
 QFile::remove(constructedAbsolutePath);
 QFile::copy(fileInfo.absoluteFilePath(), constructedAbsolutePath);
 }
 }
}

if(copyAndRemove)
 dir.removeRecursively();
</code></pre>
}

I want to copy a directory from one drive to another drive. My selected directory contains many sub directories and files. 

How can I implement the same using Qt?

Copy directory using Qt

我想将目录从一个驱动器复制到另一个驱动器。我选择的目录包含许多子目录和文件。如何使用Qt实现相同的功能？

问使用Qt复制目录
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