pager -> irb-pager. Pager -> IRB::Pager
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18
README.md
18
README.md
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@ -1,10 +1,24 @@
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`IRB::Pager` vs. `Pager`
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====================
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Because naming conflicts, i renamed Pager to `IRB::Pager`.
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There is no need for `IRB`; of course you can use `IRB::Pager` without `irb`.
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I renamed these things:
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* gem: `gem install pager` #=> `gem install irb-pager`
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* lib: `require 'pager'` #=> `require 'irb-pager'`
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* module: `Pager` #=> `IRB::Pager`
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`Pager.pager` will be `IRB::Pager.pager` now.
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Usage
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=====
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Very simple:
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require 'pager'
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include Pager
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require 'irb-pager'
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include IRB::Pager
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pager { puts "Hello World!" }
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pager { 1.upto(200) {|i|sleep 0.2; puts i} }
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6
Rakefile
6
Rakefile
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@ -4,9 +4,9 @@ require 'rake'
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begin
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require 'jeweler'
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Jeweler::Tasks.new do |gem|
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gem.name = "pager"
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gem.name = "irb-pager"
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gem.summary = %Q{Redirect output (and errors) to less}
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gem.description = %Q{You love something like "domany | less"? In irb you miss it? pager helps to redirect anything to less.}
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gem.description = %Q{You love something like "domany | less"? In irb you miss it? irb-pager helps to redirect anything to less.}
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gem.email = %w[Denis.Knauf@gmail.com]
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gem.homepage = "http://github.com/DenisKnauf/irb-pager"
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gem.authors = ["Denis Knauf"]
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@ -51,7 +51,7 @@ Rake::RDocTask.new do |rdoc|
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end
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rdoc.rdoc_dir = 'rdoc'
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rdoc.title = "pager #{version}"
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rdoc.title = "irb-pager #{version}"
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rdoc.rdoc_files.include 'README.md'
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rdoc.rdoc_files.include 'AUTHORS'
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rdoc.rdoc_files.include 'LICENSE'
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56
lib/irb-pager.rb
Normal file
56
lib/irb-pager.rb
Normal file
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module IRB
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module Pager
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module PagerHelper
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def self.options opts = nil
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opts = opts.kind_of?( Hash) ? opts.dup : {}
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stdout = opts[:stdout] || opts[:out] || $stdout
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stderr = opts[:stderr] || opts[:err] || $stderr
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stdin = opts[:stdin] || opts[:in] || $stdin
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pager = opts[:pager] || opts[:less] || $PAGER || ENV['PAGER'] || 'less'
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rescuing = opts[:rescuing].nil? ? opts[:exceptions].nil? ? $PAGER_RESCUE : opts[:exceptions] : opts[:rescuing]
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[stdout, stderr, stdin, pager, rescuing]
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end
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def self.exception_formatter exception
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["#{exception.class}: #{exception.message}", exception.backtrace.collect {|c| "\tfrom #{c}" }].join "\n"
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end
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end
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def self.pager obj = nil, opts = nil, &exe
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if block_given?
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stdout, stderr, stdin, pager, rescuing = PagerHelper.options( opts || obj)
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pid, dupout, duperr, dupin = nil, stdout.dup, stderr.dup, stdin.dup
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IO.pipe do |inrd, inwr|
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begin
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IO.pipe do |rd, wr|
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pid = Process.fork do
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stdin.reopen rd
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wr.close
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exec *pager
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end
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stdout.reopen wr
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stderr.reopen wr
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stdin.reopen inrd
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if rescuing
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begin
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yield
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rescue Object
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stdout.puts PagerHelper.exception_formatter
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end
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else
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yield
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end
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end
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ensure
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stdout.reopen dupout
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stderr.reopen duperr
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Process.wait pid
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stdin.reopen dupin
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end
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end
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else
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pager( opts) { Kernel.p obj }
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end
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end
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end
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end
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54
lib/pager.rb
54
lib/pager.rb
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@ -1,54 +0,0 @@
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module Pager
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module PagerHelper
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def self.options opts = nil
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opts = opts.kind_of?( Hash) ? opts.dup : {}
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stdout = opts[:stdout] || opts[:out] || $stdout
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stderr = opts[:stderr] || opts[:err] || $stderr
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stdin = opts[:stdin] || opts[:in] || $stdin
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pager = opts[:pager] || opts[:less] || $PAGER || ENV['PAGER'] || 'less'
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rescuing = opts[:rescuing] || opts[:exceptions] || $PAGER_RESCUE
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[stdout, stderr, stdin, pager, rescuing]
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end
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def self.exception_formatter exception
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["#{exception.class}: #{exception.message}", exception.backtrace.collect {|c| "\tfrom #{c}" }].join "\n"
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end
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end
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def self.pager obj = nil, opts = nil, &exe
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if block_given?
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stdout, stderr, stdin, pager, rescuing = PagerHelper.options( opts || obj)
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pid, dupout, duperr, dupin = nil, stdout.dup, stderr.dup, stdin.dup
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IO.pipe do |inrd, inwr|
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begin
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IO.pipe do |rd, wr|
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pid = Process.fork do
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stdin.reopen rd
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wr.close
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exec *pager
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end
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stdout.reopen wr
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stderr.reopen wr
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stdin.reopen inrd
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if rescuing
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begin
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yield
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rescue Object
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stdout.puts PagerHelper.exception_formatter
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end
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else
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yield
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end
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end
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ensure
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stdout.reopen dupout
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stderr.reopen duperr
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Process.wait pid
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stdin.reopen dupin
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end
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end
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else
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pager( opts) { Kernel.p obj }
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end
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end
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end
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