Directory Diff Script

Ruby
1

Hi,

I am after a directory diff script in Ruby, so I can compare all the
files in multiple directories. Does anybody know of such a script?

Thanks.

Nick.

2

Hi,

I am after a directory diff script in Ruby, so I can compare all the
files in multiple directories. Does anybody know of such a script?

Thanks.

Nick.

I wrote this a while ago. I’m not sure exactly what you are after, but
maybe you can use it as a starting point:

#!/usr/bin/ruby

IGNORE_EXT = %w(.scc .exe .xbe .lib .sbr .obj .dat .suo .pdb .res .idb
.pch)
IGNORE_BASE = %w(_darcs lib vultures buildlog.htm contentmeta.h rdiff)

class String
def indent
return “\t” + self.gsub("\n", “\n\t”)
end
end

class Diff

def diff(f1, f2)
    if f1.respond_to?(:to_ary)
        filelist(f1.to_ary, f2.to_ary)
    else
        if File.directory?(f1) and File.directory?(f2)
            dir(f1,f2)
        elsif File.file?(f1) and File.file?(f2)
            file(f1,f2)
        elsif File.directory?(f1)
            report_directory(f1, f2)
        elsif File.directory?(f2)
            report_directory(f2, f1)
        elsif File.file?(f1)
            report_file(f1, f2)
        elsif File.file?(f2)
            report_file(f2, f1)
        end
    end
end

def file(f1, f2)
    res = `diff #{f1} #{f2}`
    report_diff(f1, f2, res) if res != ""
end

def filelist(l1, l2)
    map = {}
    s = Struct.new(:f1, :f2)
    for f in l1
        next if IGNORE_EXT.include?(File.extname(f))
        next if IGNORE_BASE.include?(File.basename(f))
        next if f[/~\d*$/]
        map[ File.basename(f) ]  = s.new(f, nil)
    end
    for f in l2
        next if IGNORE_EXT.include?(File.extname(f))
        next if IGNORE_BASE.include?(File.basename(f))
        next if f[/~\d*$/]
        b = File.basename(f)
        map[ b ] = s.new(nil, nil) if not map[ b ]
        map[ b ].f2 = f
    end
    for base, files in map
        if !files.f1
            report_missing(files.f2)
        elsif !files.f2
            report_missing(files.f1)
        else
            diff(files.f1, files.f2)
        end
    end
end

def dir(d1, d2)
    diff( Dir.glob(d1 + "/*").collect {|x| x.downcase},
        Dir.glob(d2 + "/*").collect {|x| x.downcase} )
end

# Reporting functions

def report_directory(d, f)
    report(:type_mismatch, "#{d} is a directory, but #{f} is not")
end

def report_file(f, x)
    report(:type_mismatch, "#{f} is a regular file, but #{x} is

not")
end

def report_missing(f)
    report(:missing_file, "#{f} has no corresponding file") if

$report_missing
end

def report_diff(f1, f2, res)
    report(:diff, "\n#{f1} <--> #{f2}\n\n#{res.indent}")
end

def report(type, s)
    puts
    puts s
end

end

require ‘optparse’

$report_missing = false
$ignore_case = true

opts = OptionParser.new
opts.on(’-m’, ‘–missing’, “Report missing files.”) {|val|
$report_missing = true;}
rest = opts.parse(*ARGV)

Diff.new().diff(rest[0], rest[1])

3

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Suraj N. Kurapati wrote:

Nick wrote:

I am after a directory diff script in Ruby, so I can compare all the
files in multiple directories. Does anybody know of such a script?

Yes, it’s called diff. If you want a GUI try meld or kompare.

Diff, Patch, and Friends | Linux Journal

Whoops, I misread the question. Sorry :slight_smile:
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4

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Hash: SHA1

Nick wrote:

I am after a directory diff script in Ruby, so I can compare all the
files in multiple directories. Does anybody know of such a script?

Yes, it’s called diff. If you want a GUI try meld or kompare.

http://www.linuxjournal.com/article/1237

$ head a/* b/*
==> a/bar <==
bar

==> a/foo <==
foo

==> b/bar <==
foo

==> b/foo <==
bar

$ diff -u a b
diff -u a/bar b/bar

  • — a/bar 2006-05-29 05:08:11.000000000 -0700
    +++ b/bar 2006-05-29 05:08:16.000000000 -0700
    @@ -1 +1 @@
  • -bar
    +foo
    diff -u a/foo b/foo
  • — a/foo 2006-05-29 05:07:49.000000000 -0700
    +++ b/foo 2006-05-29 05:08:05.000000000 -0700
    @@ -1 +1 @@
  • -foo
    +bar
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