Hi All,
I need compare two text files. I should require 'diff/lcs/Array' when i
do this iam getting error. Should i install any additional gem(if yes
pls share the link). I am using Scite editor. As iam very new to ruby
kindly help me in this.
Thanks,
Venkat
--
Posted via http://www.ruby-forum.com/.
I've tried using that library in the past, but its interface just makes it crazy hard to work with. Now I would just do something like:
diff = `diff -u #{shell_escape path1} #{shell_escape path2} 2>&1`
I would define shell_escape() as something like:
def shell_escape(str)
String(str).gsub(/(?=[^a-zA-Z0-9_.\/\-\x7F-\xFF\n])/n, '\\').
gsub(/\n/, "'\n'").
sub(/^$/, "''")
end
Hope that helps.
James Edward Gray II
On Feb 25, 2009, at 11:17 AM, Venkat Kumar wrote:
I need compare two text files. I should require 'diff/lcs/Array' when i
do this iam getting error.
I came up with this for diff'ing 2 files and spitting the results to
stdout. It's meant to simulate "diff -u" output, but it's not quite
identical and is definitely not tested thoroughly:
# diff_test.rb
require 'diff/lcs'
# The file 'test1.txt' contains the following 3 lines:
On Feb 25, 10:55 am, James Gray <ja...@grayproductions.net> wrote:
On Feb 25, 2009, at 11:17 AM, Venkat Kumar wrote:
> I need compare two text files. I should require 'diff/lcs/Array'
> when i
> do this iam getting error.I've tried using that library in the past, but its interface just
makes it crazy hard to work with.
#
# This is a house
# Hello World
# My favorite color is blue
#
# The file 'test2.txt' contains the following 3 lines:
#
# This is a car
# Hello World
# My favorite color is green
module Diff
module LCS
def self.diff_files(file1, file2)
array1 = IO.readlines(file1)
array2 = IO.readlines(file2)
diffs = diff(array1, array2)
print diffs.first[0].action * 3 + ' '
print file1
print "\t" + File.mtime(file1).to_s
puts
print diffs.first[1].action * 3 + ' '
print file2
print "\t" + File.mtime(file2).to_s
puts
diffs.each_with_index{ |diff, i|
diff.each{ |d|
puts d.action + d.element
}
}
end
end
end
Diff::LCS.diff_files('test1.txt', 'test2.txt')
Here was the output of Diff::LCS.diff_files:
--- test1.txt Wed Feb 25 12:18:42 -0700 2009
+++ test2.txt Wed Feb 25 12:18:53 -0700 2009
-This is a house
+This is a car
-My favorite color is blue
+My favorite color is green
Hope that was useful.
Regards,
Dan
James Gray wrote:
I would define shell_escape() as something like:
def shell_escape(str)
String(str).gsub(/(?=[^a-zA-Z0-9_.\/\-\x7F-\xFF\n])/n, '\\').
gsub(/\n/, "'\n'").
sub(/^$/, "''")
end
Nice! I always wished this method was in the Ruby stdlib. Maybe it
could be added as a class method of the Shell class in the "shell"
stdlib?
require 'shell'
Shell.escape('foo "bar".txt')
Shall I file a feature request to ruby-core?
--
Posted via http://www.ruby-forum.com/\.
Hi ,
Thanks a lot for all ur replies.. My problem is I could't require
'diff/lcs'. I am getting an error message like.
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`gem_original_require': no such file to load -- diff/lcs/Array
(LoadError)
Should I install any additional gem. kindly help me
Thanks,
venkat
Daniel Berger wrote:
On Feb 25, 10:55�am, James Gray <ja...@grayproductions.net> wrote:
On Feb 25, 2009, at 11:17 AM, Venkat Kumar wrote:
> I need compare two text files. I should require 'diff/lcs/Array' �
> when i
> do this iam getting error.I've tried using that library in the past, but its interface just �
makes it crazy hard to work with.I came up with this for diff'ing 2 files and spitting the results to
stdout. It's meant to simulate "diff -u" output, but it's not quite
identical and is definitely not tested thoroughly:# diff_test.rb
require 'diff/lcs'# The file 'test1.txt' contains the following 3 lines:
#
# This is a house
# Hello World
# My favorite color is blue
#
# The file 'test2.txt' contains the following 3 lines:
#
# This is a car
# Hello World
# My favorite color is greenmodule Diff
module LCS
def self.diff_files(file1, file2)
array1 = IO.readlines(file1)
array2 = IO.readlines(file2)
diffs = diff(array1, array2)print diffs.first[0].action * 3 + ' '
print file1
print "\t" + File.mtime(file1).to_sputs
print diffs.first[1].action * 3 + ' '
print file2
print "\t" + File.mtime(file2).to_sputs
diffs.each_with_index{ |diff, i|
diff.each{ |d|
puts d.action + d.element
}
}
end
end
endDiff::LCS.diff_files('test1.txt', 'test2.txt')
Here was the output of Diff::LCS.diff_files:
--- test1.txt Wed Feb 25 12:18:42 -0700 2009
+++ test2.txt Wed Feb 25 12:18:53 -0700 2009
-This is a house
+This is a car
-My favorite color is blue
+My favorite color is greenHope that was useful.
Regards,
Dan
--
Posted via http://www.ruby-forum.com/\.
It's in Ruby 1.9. See my notes at the bottom of this post:
James Edward Gray II
On Feb 26, 2009, at 4:05 PM, Suraj Kurapati wrote:
James Gray wrote:
I would define shell_escape() as something like:
def shell_escape(str)
String(str).gsub(/(?=[^a-zA-Z0-9_.\/\-\x7F-\xFF\n])/n, '\\').
gsub(/\n/, "'\n'").
sub(/^$/, "''")
endNice! I always wished this method was in the Ruby stdlib. Maybe it
could be added as a class method of the Shell class in the "shell"
stdlib?
Something may have gone wrong with your gem install. I would try
uninstalling diff-lcs and reinstalling it.
You haven't installed it manually also, have you? Maybe you have it in
your sitelib dir as well, and it's missing there.
Regards,
Dan
On Feb 25, 10:04 pm, Venkat Kumar <venkatesh...@gmail.com> wrote:
Hi ,
Thanks a lot for all ur replies.. My problem is I could't require
'diff/lcs'. I am getting an error message like.c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`gem_original_require': no such file to load -- diff/lcs/Array
(LoadError)Should I install any additional gem. kindly help me