脚本 Qt tar.gz 解压缩 获取进度

解压缩并显示进度

方法1

​	pv ../root.tar.gz |tar -zxf -

​ 参考：https://blog.csdn.net/weixin_33711641/article/details/94330472?utm_medium=distribute.pc_aggpage_search_result.none-task-blog-2_allfirst_rank_v2~rank_v25-8-94330472.nonecase&utm_term=tar%E8%A7%A3%E5%8E%8B%E7%9C%8B%E8%BF%9B%E5%BA%A6

方法2

#!/bin/bash#total_size=`xz --robot -l $1 | grep 'totals' | awk '{print $5}'`
total_size=`gzip -l $1 |awk 'END{print $2}'`echo "total_size:$total_size"block_size=`expr $total_size / 51200`
block_size=`expr $block_size + 1`
#let block_size=total_size/51200
#let block_size=block_size+1
echo "block_size:$block_size"
tar --blocking-factor=$block_size --checkpoint=1 --checkpoint-action='ttyout= %u    \r' -zxf $1 -C $2#显示效果：
root@lalala:~# ./unpackage.sh ./root.tar.gz temp/
total_size:471726080
block_size:921
unpack 54%

参考 ： https://blog.csdn.net/u012385733/article/details/88840126

参考：http://www.gnu.org/software/tar/manual/html_section/tar_26.html

for Qt

#解压脚本
#!/bin/bashtotal_size=`gzip -l $1 |awk 'END{print $2}'`#echo "total_size:$total_size"block_size=`expr $total_size / 512`
block_size=`expr $block_size / $3`
block_size=`expr $block_size + 1`
#let block_size=total_size/51200
#let block_size=block_size+1
#echo "block_size:$block_size"
tar --blocking-factor=$block_size --checkpoint=1  --checkpoint-action='echo=%u'  -zxf $1 -C $2   2>&1

//Qt获取tar解压进度 
//伪代码 简单改改就好
get_tar_progress_block("/bin/bash",QStringList()<<"-c"<<"/usr/nova/bin/unpackage.sh /advanced/root.tar.gz  /  100", &pval, 100);
//pval 为进度条进度值，100为压缩进度多少等分int xxx::get_tar_progress_block(QString cmd,QStringList opt, int *pval, int portions){QProcess *proc = new QProcess;QByteArray result_tmp;QString result;int cmdEnd = 0;int temp = 0;proc->start(cmd,opt);if (!proc->waitForStarted()){return -1;}while(!cmdEnd){if( proc->waitForReadyRead() ){result_tmp.append(proc->readAll());result = result_tmp;if(result == "100")cmdEnd = 1;if(result.right(1) == "\n"){QRegularExpression rx("(\\d+)");QRegularExpressionMatchIterator i = rx.globalMatch(result);while (i.hasNext()) {QRegularExpressionMatch match = i.next();QString word = match.captured(1);temp = word.toInt();emit emit_progressbar_val(SYSINIT_PROGRESSBAR_ID,(*pval+temp));//给进度条进度值if(temp == portions){cmdEnd = 1;*pval += temp;}}result_tmp.clear();result.clear();}}if (!proc->waitForFinished()){return -1;}return 0;}

本文来自互联网用户投稿，文章观点仅代表作者本人，不代表本站立场，不承担相关法律责任。如若转载，请注明出处。 如若内容造成侵权/违法违规/事实不符，请点击【内容举报】进行投诉反馈！