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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h5unjam

h5unjam(1)						      General Commands Manual							h5unjam(1)

NAME

       h5unjam - Extract the user block from a HDF5 file

SYNOPSIS

       h5unjam -i in_file.h5 [-u user_block | --delete] [-o out_file.h5]

DESCRIPTION

       h5unjam	splits	an  HDF5 file, writing the user block to a file or stdout and the HDF5 file to an HDF5 file with a header at byte 0 (i.e.,
       with no user block).

       If out_file.h5 is given, a new file is created with the in_file.h5 without the user block. In this case, infile.h5 is unchanged.

       If out_file.h5 is not specified, the user_block is removed and in_file.h5 is rewritten, starting at byte 0.

       If user_block is set, the user block will be written to user_block.  If user_block is not set, the user block (if any) will be  written	to
       stdout. If --delete is selected, the user block will not be not written.

EXAMPLE USAGE

       For an HDF5 file, with_ub.h5, with a user block, extract the user block to user_block.txt and the HDF5 file to wo_ub.h5.

	    h5unjam -i with_ub.h5 -u user_block.txt -i wo_ub.h5

RETURN VALUE

       h5unjam returns the size of the output file, or -1 if an error occurs.

CAVEATS

       This tool copies all the data (sequentially) in the file(s) to new offsets. For a large file, this copy will take a long time.

       The  most  efficient  way  to create a user block is to create the file with a user block (see H5Pset_user_block), and write the user block
       data into that space from a program.

       The user block is completely opaque to the HDF5 library and to the h5jam and h5unjam tools.  The user block is simply read or written as  a
       string  of  bytes,  which could be text or any kind of binary data.  It is up to the user to know what the contents of the user block means
       and how to process it.

       When the user block is extracted, all the data is written to the output, including any padding or unwritten data.

       This tool moves the HDF5 file through byte copies, i.e., it does not read or interpret the HDF5 objects.

SEE ALSO

       h5dump(1), h5ls(1), h5diff(1), h5import(1), gif2h5(1), h52gif(1), h5perf(1), h5jam(1).

																	h5unjam(1)