Adding files to a Tar Archive in PHP with different filenames

问题

I'm currently using the Archive-Tar Pear extension for PHP to add a collection of files into a Tar Archive.

These files are stored on a filer with an extra extension e.g.

 filename.tgz.104850209.t or filename2.doc.2154395.t

I'd like to remove this extra extension while adding the files so that my Tar Archive would have the files: filename.tgz and filename2.doc

Is there a way of doing that without having to copy/rename the source files first before adding to the Archive?

Thanks, Mark.

回答1:

Archive_Tar in its latest version does not yet support such a functionality out of the box. Part of the functionality is in _addFile() and the other part in _addString().

Most easy is probably to extend from Archive_Tar and proxy all calls to _writeHeaderBlock() which is public, applying a map on the filename parameter so to rename it when written into headers.

class Patched_Archive_Tar extends Archive_Tar
{
    var $renameMap = array();

    function _writeHeaderBlock($p_filename, $p_size, $p_mtime=0, $p_perms=0,
                               $p_type='', $p_uid=0, $p_gid=0)
    {
        return parent::_writeHeaderBlock($this->_translateFilename($p_filename), 
                                  $p_size, $p_mtime=0, $p_perms=0,
                                  $p_type='', $p_uid=0, $p_gid=0);
    }

    function _translateFilename($orignal)
    {
        $map = $this->renameMap;
        if (isset($map[$orignal])) {
            return $map[$orignal];
        }

        return $original;
    }
}

Usage:

$obj = new Patched_Archive_Tar('dummy.tar'); // name of archive

$files = array('mystuff/ad.gif', 
               'mystuff/alcon.doc.t', 
               'mystuff/alcon.xls.t');   // files to store in archive

$obj->renameMap = array(
    'mystuff/alcon.doc.t' => 'mystuff/alcon.doc',
    'mystuff/alcon.xls.t' => 'mystuff/alcon.xls',
)  // files to rename

if ($obj->create($files)) {
    echo 'Created successfully!';
} else {
    echo 'Error in file creation';
}

This is quick and dirty but hopefully worky. For something better see the function I noticed at the beginning _addFile() and _addString(), you basically want another one that is able to add a file (as with _addFile()) by specifiying the filename (as with _addString()).

回答2:

Tried to edit @hakre's answer, but peer reviewers weren't having that.

To answer @user2248522's comment, I rewrote the class to use _writeHeader. Additionally, I added a block for any Windows users out there and fixed a couple spelling errors.

class Patched_Archive_Tar extends Archive_Tar
{
    var $renameMap = array();

    function _writeHeader($p_filename, $p_stored_filename)
    {
        return parent::_writeHeader($p_filename, 
            $this->_translateFilename($p_stored_filename));
    }

    function _translateFilename($orignal)
    {
        $map = $this->renameMap;

        if (isset($map[$original])) {
            return $map[$original];
        }

        //Need alter our map array to match the altered original on WIN systems
        if (defined('OS_WINDOWS') && OS_WINDOWS) {

            //Check for a proper array
            if (!is_array($map)) return $original;

            //Check each replacement rule
            foreach($map as $needle => $replacement) {

                if ($this->_translateWinPath($needle, true) == $original) {

                    return $replacement;

                } //if()

            } //foreach()

        } //if()

        return $original;

    }
}

Usage:

$obj = new Patched_Archive_Tar('dummy.tar'); // name of archive

$files = array('mystuff/ad.gif', 
               'mystuff/alcon.doc.t', 
               'mystuff/alcon.xls.t');   // files to store in archive

$obj->renameMap = array(
    'mystuff/alcon.doc.t' => 'mystuff/alcon.doc',
    'mystuff/alcon.xls.t' => 'mystuff/alcon.xls',
)  // files to rename

if ($obj->create($files)) {
    echo 'Created successfully!';
} else {
    echo 'Error in file creation';
}

来源：https://stackoverflow.com/questions/15831121/adding-files-to-a-tar-archive-in-php-with-different-filenames

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php

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tar