@@ -1,7 +1,7 @@ #!/usr/bin/env ruby # Start Date: Saturday January 26, 2008 -# Most Recent Update: Thursday March 6, 2008 -# Current Version: 1.0 +# Most Recent Update: Monday July 14, 2008 +# Current Version: 1.2 # Author: Joseph Pecoraro # Contact: joepeck02@gmail.com # Decription: Default behavior is a multiple regular expressions grep @@ -31,12 +31,12 @@ usage: #{$program_name} [options] [-#] ( [-n] regex ) [filenames] filenames - names of the input files to be parsed, if blank uses STDIN options: - --all or -a instead of line-by-line this scans the entire file - --hidden or -h search hidden files and hidden directories - --quiet or -q quiet, don't list files and line numbers + --all or -a instead of line-by-line this scans the entire file + --hidden or -h search hidden files and hidden directories + --quiet or -q quiet, don't list files and line numbers before regex: - --neg, --not, or -n line must not match this regular expression + --neg, --not, -n, or ! line must not match this regular expression special note: When using bash, if you want backslashes in the replace portion make sure @@ -46,66 +46,66 @@ USAGE # Print an error message and exit def err(msg) - STDERR.puts("#{$program_name}: #{msg}") - exit 1 + STDERR.puts("#{$program_name}: #{msg}") + exit 1 end # Check existence and permissions for the file def check_file(filename) - if !File.exists? filename - err("#{filename}: No such file") - elsif !File.readable? filename - err("#{filename}: File is not readable by this user.") - end - check_stream(filename, filename+' ') + if !File.exists? filename + err("#{filename}: No such file") + elsif !File.readable? filename + err("#{filename}: File is not readable by this user.") + end + check_stream(filename, filename+' ') end def check_stream( stream, print_name ) - - # Default Behavior - # 1. Open the file - # 2. Read text line by line - # 3. Run each regular expression, and check if it should match or - # if it should not match based on the command line switches - # 4. Print the filename, line number, and line which successfully - # match all conditions - if ( !$all_mode ) - line_num = 0 - File.new(stream).readlines.each do |line| - line_num += 1 - temp_negs = [] - $regex_list.each do |regex| - temp_negs.push( !line.match(regex).nil? ) - end - if $regex_neg.eql? temp_negs - print "#{print_name}[#{line_num}]: " unless $quiet_mode - puts line - end - end - - # all mode - # 1. Setup an array (all_array) we hope will end up like $regex_neg - # 2. Open the file - # 3. Read text line by line - # 4. Run the regular expression, set all found regexs in the temp array - # 5. Test the temp array against $regex_neg, if there is a match print the filename - else - all_array = Array.new($regex_neg.size, false) - File.new(stream).readlines.each do |line| - $regex_list.each_index do |i| - regex = $regex_list[i] - all_array[i] = true if !line.match(regex).nil? - end - end - if $regex_neg.eql? all_array - if stream == STDIN.fileno - puts "STDIN matches all regular expressions" - else - puts print_name - end - end - end - + + # Default Behavior + # 1. Open the file + # 2. Read text line by line + # 3. Run each regular expression, and check if it should match or + # if it should not match based on the command line switches + # 4. Print the filename, line number, and line which successfully + # match all conditions + if ( !$all_mode ) + line_num = 0 + File.new(stream).readlines.each do |line| + line_num += 1 + temp_negs = [] + $regex_list.each do |regex| + temp_negs.push( !line.match(regex).nil? ) + end + if $regex_neg.eql? temp_negs + print "#{print_name}[#{line_num}]: " unless $quiet_mode + puts line + end + end + + # all mode + # 1. Setup an array (all_array) we hope will end up like $regex_neg + # 2. Open the file + # 3. Read text line by line + # 4. Run the regular expression, set all found regexs in the temp array + # 5. Test the temp array against $regex_neg, if there is a match print the filename + else + all_array = Array.new($regex_neg.size, false) + File.new(stream).readlines.each do |line| + $regex_list.each_index do |i| + regex = $regex_list[i] + all_array[i] = true if !line.match(regex).nil? + end + end + if $regex_neg.eql? all_array + if stream == STDIN.fileno + puts "STDIN matches all regular expressions" + else + puts print_name + end + end + end + end @@ -113,19 +113,19 @@ end # Script starts here # Check for options, make them nils, then delete nils ARGV.each_index do |i| - arg = ARGV[i] - if arg.match /^-(-all|a)$/ - $all_mode = true - ARGV[i] = nil - elsif arg.match /^-(-hidden|h)$/ - $search_hidden = true - ARGV[i] = nil - elsif arg.match /^-(-quiet|q)$/ - $quiet_mode = true - ARGV[i] = nil - else - break - end + arg = ARGV[i] + if arg.match /^-(-all|a)$/ + $all_mode = true + ARGV[i] = nil + elsif arg.match /^-(-hidden|h)$/ + $search_hidden = true + ARGV[i] = nil + elsif arg.match /^-(-quiet|q)$/ + $quiet_mode = true + ARGV[i] = nil + else + break + end end # Remove the nils from ARGV @@ -133,38 +133,38 @@ ARGV.delete_if { |elem| elem.nil? } # Must be at least 1 argument (a regex) if ARGV.size < 1 - puts usage - exit + puts usage + exit end # Check the first argument num_regex = 1 argv_index = 0 if ARGV[argv_index].match( /^-(\d+)$/ ) - num_regex = $1.to_i - argv_index += 1 + num_regex = $1.to_i + argv_index += 1 end # Pull out that many regular expressions 1.upto(num_regex) do |i| - - # Check if it is a negation option - if ARGV[argv_index].match( /^-(-neg|-not|n)$/ ) - $regex_neg.push( false ) - argv_index += 1 - else - $regex_neg.push( true ) - end - - # Get the regular expressions - find_str = ARGV[argv_index] - argv_index += 1 - - # User is allowed to wrap the find regex in /'s (this removes them) - find_str = find_str[1..(find_str.length-2)] if find_str =~ /^\/.*?\/$/ - - # Convert to a regular expression and add to the collection - $regex_list.push( Regexp.new( find_str, Regexp::IGNORECASE ) ) + + # Check if it is a negation option + if ARGV[argv_index].match( /^(-(-neg|-not|n))|!$/ ) + $regex_neg.push( false ) + argv_index += 1 + else + $regex_neg.push( true ) + end + + # Get the regular expressions + find_str = ARGV[argv_index] + argv_index += 1 + + # User is allowed to wrap the find regex in /'s (this removes them) + find_str = find_str[1..(find_str.length-2)] if find_str =~ /^\/.*?\/$/ + + # Convert to a regular expression and add to the collection + $regex_list.push( Regexp.new( find_str, Regexp::IGNORECASE ) ) end @@ -174,31 +174,31 @@ ARGV << nil if argv_index == ARGV.size # Start to parse the files argv_index.upto( ARGV.size-1 ) do |i| - # STDIN - filename = ARGV[i] - if filename.nil? - filename = STDIN.fileno - check_stream(filename, '') - - # If it is a directory - elsif File.directory? filename - - # Check each file recursively - # NOTE: Find will recurse down all layers, so just skip dirs - Find.find(filename) do |new_filename| - if (!$search_hidden && new_filename.match(/^(.*\/)?\.\w/)) || (File.symlink? new_filename) - Find.prune - elsif File.directory? new_filename - next - else - check_file(new_filename) - end - end - - # If it is a file go and check it [even if hidden] - else - check_file(filename) - end + # STDIN + filename = ARGV[i] + if filename.nil? + filename = STDIN.fileno + check_stream(filename, '') + + # If it is a directory + elsif File.directory? filename + + # Check each file recursively + # NOTE: Find will recurse down all layers, so just skip dirs + Find.find(filename) do |new_filename| + if (!$search_hidden && new_filename.match(/^(.*\/)?\.\w/)) || (File.symlink? new_filename) + Find.prune + elsif File.directory? new_filename + next + else + check_file(new_filename) + end + end + + # If it is a file go and check it [even if hidden] + else + check_file(filename) + end end mgrep @@ -1,5 +1,8 @@ Author: Joseph Pecoraro +Version 1.2: Monday July 14, 2008 +- added '!' to mean --not. This is the same as awk and maybe others. + Version 1.1: Sunday July 13, 2008 - added --quiet option to muffle the filename/line number - error messages now print on stderr mgrep-changelog.txt 9f1e6f08c23fa2b0c00e8b152ae073062b931a71 Joseph Pecoraro joepeck02@gmail.com http://github.com/JosephPecoraro/scripts/commit/c65523ca300c06e42801a3328bef9c64c4b391cc c65523ca300c06e42801a3328bef9c64c4b391cc 2008-07-13T21:14:35-07:00 2008-07-13T21:14:35-07:00 added '!' to also mean --not. This is the same as awk and possibly other scripts. 2cba5c511ce366a0760a6bd591d8f803d957dc13 Joseph Pecoraro joepeck02@gmail.com