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177 | #!ruby
# -*- Mode:Ruby; Coding:us-ascii-unix; fill-column:158 -*-
################################################################################################################################################################
##
# @file lineMapDiff.rb
# @author Mitch Richling <https://www.mitchr.me/>
# @brief Compute the difference between two maps defined by files -- each line has a key & value.@EOL
# @keywords associative array hash dictionary delta difference
# @std Ruby 2.5
# @see
# @copyright
# @parblock
# Copyright (c) 1992,1995,2006,2018, Mitchell Jay Richling <https://www.mitchr.me> All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice, this list of conditions, and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions, and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
# TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# @endparblock
# @filedetails
#
# Based on a very old perl script -- simply translated into modern ruby.
#
################################################################################################################################################################
$stdout.sync = true
$stderr.sync = true
outSections = "LRDS"
outPrefix = true
outDeltaDiff = false
outFieldSep = ' '
keyField = 0
valField = 1
fieldSep = Regexp.new('\s+')
calcStack = Array.new
reportDone = false
ARGV.each do |arg|
if(reportDone) then
STDERR.puts("\n\n\n\nERROR: Extra arguments starting with '#{arg}' were ignored.\n\n")
exit
elsif(['-HELP', '--HELP', '-H'].member?(arg.upcase)) then
puts(' ');
puts(' ');
puts(' lineSetOp.rb: <[options] file>... ');
puts(' ');
puts(' Prints a difference report for two maps/dictionaries. ');
puts(' The report has four parts: ');
puts(' 1) Lines prefixed by "L: ": KEYS found only in the first (left) map. ');
puts(' 2) Lines prefixed by "R: ": KEYS found only in the second (right) map. ');
puts(' 3) Lines prefixed by "D: ": KEYS found in both files but with different values. ');
puts(' 4) Lines prefixed by "S: ": KEYS found in both files with the same valus. ');
puts(' ');
puts(' File Processing Options: (May be report. Apply to files following on the command line.) ');
puts(' --k[eyField]=INTEGER Default: 1 ');
puts(' --v[alueField]=INTEGER Default: 2 ');
puts(' --s[eparator]=REGEX Default: \s+ ');
puts(' ');
puts(' Report Options: (Must appear before input files) ');
puts(' --r[eport]=SECTIONS Default: LRDS ');
puts(' Which sections, in the order given, are to be printed in the report ');
puts(' --p[refix]=BOOLEAN Default: TRUE ');
puts(' Print, or not, the prefix on each line of the report ');
puts(' --o[utSeparator]=STRING Default: " " ');
puts(' Used to separate values when the --diffDelta command line option is true ');
puts(' --d[iffDelta]=BOOLEAN Default: TRUE ');
puts(' In this mode the D section outputs the key, left value, and right value ');
puts(' separated by the separator specified by the --outSeparator option. ');
puts(' ');
puts(' Not-option arguments are files defining the maps (key/value pairs). ');
puts(' These "map files" have one key/value per line. ');
puts(' ');
puts(' Example 1: ');
puts(' We which to know which packages are installed only on one system, and which packages ');
puts(' are installed on both but differ in version number. So we create files for each ');
puts(' system with the package & version info. For example, if we were using pacman as the ');
puts(' package manager, we might run `pacman -Q > hostNpackages.txt` on each system. Then ');
puts(' we get a report like so: ');
puts(' ');
puts(' lineMapDiff.rb host1packages.txt host2packages.txt ');
puts(' ');
puts(' Example 2: ');
puts(' Same as previous example, but INSTALL all packages on system 2 that are not already ');
puts(' on system 1. If pacman is our package manager: ');
puts(' pacman -S `lineMapDiff.rb -r=L -p=F host1packages.txt host2packages.txt` ');
puts(' ');
exit
elsif(tmp=arg.match(/^-+r[^=]*=(.+)/)) then
outSections=tmp[1]
elsif(tmp=arg.match(/^-+p[^=]*=(.+)/)) then
v=tmp[1]
outPrefix = v.match(/^[YyTt]/)
elsif(tmp=arg.match(/^-+d[^=]*=(.+)/)) then
v=tmp[1]
outDeltaDiff = v.match(/^[YyTt]/)
elsif(tmp=arg.match(/^-+o[^=]*=(.+)/)) then
outFieldSep=tmp[1]
elsif(tmp=arg.match(/^-+k[^=]*=([0-9]+)/)) then
keyField=tmp[1].to_i - 1
elsif(tmp=arg.match(/^-+v[^=]*=([0-9]+)/)) then
valField=tmp[1].to_i - 1
elsif(tmp=arg.match(/^-+s[^=]*=(.+)/)) then
fieldSep = Regexp.new(tmp[1])
else
if(FileTest.exist?(arg)) then
open(arg, 'rb') do |file|
newHash = Hash.new
file.each_line do |line|
fields = line.chomp.split(fieldSep)
if(newHash.member?(fields[keyField])) then
if(newHash[fields[keyField]] == fields[valField]) then
STDERR.puts("WARNING: Duplicate key (#{fields[keyField]}) with identical values (#{fields[valField]}) in file #{arg}.\n")
else
STDERR.puts("WARNING: Duplicate key (#{fields[keyField]}) with diffrent values (#{newHash[fields[keyField]]} != #{fields[valField]}) in file #{arg}.\n")
end
else
newHash[fields[keyField]] = fields[valField]
end
end
calcStack.push(newHash)
if(calcStack.length == 2) then
outSections.each_char do |section|
if( !(["L", "R", "D", "S"].member?(section))) then
STDERR.puts("ERROR: Unknown report section in --report option: #{char}.\n")
elsif(section=="L")
calcStack[0].sort.each do |leftKey, leftValue|
if ( !(calcStack[1].member?(leftKey))) then
printf("%s%s\n", (outPrefix ? "#{section}: " : ''), leftKey)
end
end
elsif(section=="R")
calcStack[1].sort.each do |rightKey, rightPackageVersion|
if ( !(calcStack[0].member?(rightKey))) then
printf("%s%s\n", (outPrefix ? "#{section}: " : ''), rightKey)
end
end
elsif(section=="D")
calcStack[1].sort.each do |rightKey, rightPackageVersion|
if ( calcStack[0].member?(rightKey)) then
if (calcStack[0][rightKey] != rightPackageVersion) then
if(outDeltaDiff) then
printf("%s%s%s%s%s%s\n", (outPrefix ? "#{section}: " : ''), rightKey, outFieldSep, calcStack[0][rightKey], outFieldSep, rightPackageVersion)
else
printf("%s%s\n", (outPrefix ? "#{section}: " : ''), rightKey)
end
end
end
end
elsif(section=="S")
calcStack[1].sort.each do |rightKey, rightPackageVersion|
if (calcStack[0].member?(rightKey)) then
if (calcStack[0][rightKey] == rightPackageVersion) then
printf("%s%s\n", (outPrefix ? "#{section}: " : ''), rightKey)
end
end
end
end
end
reportDone = true
end
end
else
STDERR.puts("Unable to open file: #{arg}")
exit
end
end
end
|