Script to find & replace a multiple lines string across multiple php files and subdirectories Post: 302604196

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Top Forums Shell Programming and Scripting Script to find & replace a multiple lines string across multiple php files and subdirectories Post 302604196 by agama on Saturday 3rd of March 2012 03:14:00 PM

03-03-2012

Registered User

Is the block of code the only block that starts <?php and finishes ?>? I suspect that maybe there are other blocks that start and end this way, but on the off chance that this will be the only block like this, then this sed should work:

Code:

sed '/<?php/,/?>/d'  "$file-" >"$file"

It deletes all lines between the starting line with "<?php" and the ending "?>" line as it reads the file. The updated file is written to $file.

If you can use this sed, just replace it in the earlier example.

If there are more than one php blocks of code, then you'll need to find a unique string inside the block that you want to delete. Change the one line in the script below that has "/enter your nickname/" to contain the unique string from the block of code and it should find and delete the lines containing the string.

Code:

#!/usr/bin/env ksh

cd /directory/path/where/you/want/to/start
find . -name "*.php" | while read file
do
    echo "munging: $file"             # nice to see progress as it works
    mv "$file" "$file-"      # back it up
    awk '     # read the file and delete the block of php code
    /<?php/ { drop = idx = 0; snarf = 1; }  # start of a block; start buffering

    /?>/ {                  # end of a block
        if( ! drop )        # magic string not found -- show this block
        {
            for( i = 0; i < idx; i++ )
                printf( "%s\n", buffer[i] );
            printf( "%s\n", $0 );
        }

        snarf = 0;          # turn off buffering
        next;
    }

    ### change the string between the slants to be something unique to the block you wish to delete. 
    /enter your nickname/ { drop = 1; }    # magic string found, drop if we are in a php block

    snarf {                 # if buffering, hold the record until end of block reached.
        buffer[idx++] = $0;
        next;
    }

    { print; }              # not buffering, just print the record.
    '  "$file-" >"$file"
    if (( $? > 0 ))            # handle failure by putting the file back in place
    then
        echo "edit of $file failed" >&2
        mv "$file-" "$file"             # restore original
    else
        rm "$file-"               # worked, delete backup 
    fi
done

Hope this helps get you going.

Last edited by agama; 03-04-2012 at 01:44 PM.. Reason: corrected comment that introduced a bug

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fgetss

FGETSS(3)								 1								 FGETSS(3)

fgetss - Gets line from file pointer and strip HTML tags

SYNOPSIS

       string fgetss (resource	$handle, [int  $length], [string  $allowable_tags])

DESCRIPTION

	Identical to fgets(3), except that fgetss(3) attempts to strip any NUL bytes, HTML and PHP tags from the text it reads.

PARAMETERS

	      o $handle
		-The  file  pointer must be valid, and must point to a file successfully opened by fopen(3) or fsockopen(3) (and not yet closed by
		fclose(3)).

	      o $length
		- Length of the data to be retrieved.

	      o $allowable_tags
		- You can use the optional third parameter to specify tags which should not be stripped.

RETURN VALUES

	Returns a string of up to $length - 1 bytes read from the file pointed to by $handle, with all HTML and PHP code stripped.

	If an error occurs, returns FALSE.

       Example #1

	      Reading a PHP file line-by-line

	      <?php
	      $str = <<<EOD
	      <html><body>
	       <p>Welcome! Today is the <?php echo(date('jS')); ?> of <?= date('F'); ?>.</p>
	      </body></html>
	      Text outside of the HTML block.
	      EOD;
	      file_put_contents('sample.php', $str);

	      $handle = @fopen("sample.php", "r");
	      if ($handle) {
		  while (!feof($handle)) {
		      $buffer = fgetss($handle, 4096);
		      echo $buffer;
		  }
		  fclose($handle);
	      }
	      ?>

	      The above example will output something similar to:

	      Welcome! Today is the  of .

	      Text outside of the HTML block.

NOTES

       Note

	      If PHP is not properly recognizing the line endings when reading files either on or created by a Macintosh  computer,  enabling  the
	      auto_detect_line_endings run-time configuration option may help resolve the problem.

SEE ALSO

       fgets(3), fopen(3), popen(3), fsockopen(3), strip_tags(3).

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