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POPerl regex to capture strings between anchor words
 

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  1. POPerl regex to capture strings between anchor words
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    <p>I am still working on cleaning up Oracle files, having to replace strings in files where the Oracle schema name is prepended to the function/procedure/package name within the file, as well as when the function/procedure/package name is double-quoted. Once the definition is corrected, I write the correction back to the file, along with the rest of the actual code.</p> <p>I have code written to replace simple declarations (no input/output parameters) Now I am trying to get my regex to operate on (Note: This post is a continuation from <a href="https://stackoverflow.com/questions/10416385/perl-script-to-modify-file">this question</a>) Some examples of what I'm trying to clean up:</p> <p>Replace:</p> <pre><code>CREATE OR REPLACE FUNCTION "TRON2000"."DC_F_DUMP_CSV_MMA" ( p_trailing_separator IN BOOLEAN DEFAULT FALSE, p_max_linesize IN NUMBER DEFAULT 32000, p_mode IN VARCHAR2 DEFAULT 'w' ) RETURN NUMBER IS </code></pre> <p>to</p> <pre><code>CREATE OR REPLACE FUNCTION DC_F_DUMP_CSV_MMA ( p_trailing_separator IN BOOLEAN DEFAULT FALSE, p_max_linesize IN NUMBER DEFAULT 32000, p_mode IN VARCHAR2 DEFAULT 'w' ) RETURN NUMBER IS </code></pre> <p>I have been trying to use the following regex to separate the declaration, for later reconstruction after I've cleaned out the schema name / fixed the name of the function/procedure/package to not be double-quoted. I am struggling with getting each into a buffer - here's my latest attempt to grab all the middle input/output into it's own buffer:</p> <pre><code>\b(CREATE\sOR\sREPLACE\s(PACKAGE|PACKAGE\sBODY|PROCEDURE|FUNCTION))(?:\W+\w+){1,100}?\W+(RETURN)\s*(\W+\w+)\s(AS|IS)\b </code></pre> <p>Any / all help is GREATLY appreciated!</p> <p>This is the script that I'm using right now to evaluate / write the corrected files:</p> <pre><code>#!/usr/bin/perl use strict; use warnings; use File::Find; use Data::Dumper; # utility to clean strings sub trim($) { my $string = shift; $string = "" if !defined($string); $string =~ s/^\s+//; $string =~ s/\s+$//; # aggressive removal of blank lines $string =~ s/\n+/\n/g; return $string; } sub cleanup_packages { my $file = shift; my $tmp = $file . ".tmp"; my $package_name; open( OLD, "&lt; $file" ) or die "open $file: $!"; open( NEW, "&gt; $tmp" ) or die "open $tmp: $!"; while ( my $line = &lt;OLD&gt; ) { # look for the first line of the file to contain a CREATE OR REPLACE STATEMENT if ( $line =~ m/^(CREATE\sOR\sREPLACE)\s*(PACKAGE|PACKAGE\sBODY)?\s(.+)\s(AS|IS)?/i ) { # look ahead to next line, in case the AS/IS is next my $nextline = &lt;OLD&gt;; # from the above IF clause, the package name is in buffer 3 $package_name = $3; # if the package name and the AS/IS is on the same line, and # the package name is quoted/prepended by the TRON2000 schema name if ( $package_name =~ m/"TRON2000"\."(\w+)"(\s*|\S*)(AS|IS)/i ) { # grab just the name and the AS/IS parts $package_name =~ s/"TRON2000"\."(\w+)"(\s*|\S*)(AS|IS)/$1 $2/i; trim($package_name); } elsif ( ( $package_name =~ m/"TRON2000"\."(\w+)"/i ) &amp;&amp; ( $nextline =~ m/(AS|IS)/ ) ) { # if the AS/IS was on the next line from the name, put them together on one line $package_name =~ s/"TRON2000"\."(\w+)"(\s*|\S*)/$1/i; $package_name = trim($package_name) . ' ' . trim($nextline); trim($package_name); # remove trailing carriage return } # now put the line back together $line =~ s/^(CREATE\sOR\sREPLACE)\s*(PACKAGE|PACKAGE\sBODY|FUNCTION|PROCEDURE)?\s(.+)\s(AS|IS)?/$1 $2 $package_name/ig; # and print it to the file print NEW "$line\n"; } else { # just a normal line - print it to the temp file print NEW $line or die "print $tmp: $!"; } } # close up the files close(OLD) or die "close $file: $!"; close(NEW) or die "close $tmp: $!"; # rename the temp file as the original file name unlink($file) or die "unlink $file: $!"; rename( $tmp, $file ) or die "can't rename $tmp to $file: $!"; } # find and clean up oracle files sub eachFile { my $ext; my $filename = $_; my $fullpath = $File::Find::name; if ( -f $filename ) { ($ext) = $filename =~ /(\.[^.]+)$/; } else { # ignore non files return; } if ( $ext =~ /(\.spp|\.sps|\.spb|\.sf|\.sp)/i ) { print "package: $filename\n"; cleanup_packages($fullpath); } else { print "$filename not specified for processing!\n"; } } MAIN: { my ( @files, $file ); my $dir = 'C:/1_atest'; # grab all the files for cleanup find( \&amp;eachFile, "$dir/" ); #open and evaluate each foreach $file (@files) { # skip . and .. next if ( $file =~ /^\.$/ ); next if ( $file =~ /^\.\.$/ ); cleanup_file($file); }; } </code></pre>
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