added preview.vim and textile.vim

Conflicts:

	vim/doc/textile.txt
	vim/ftplugin/textile.vim
	vim/syntax/textile.vim

README.rdoc

@@ -12,6 +12,7 @@ He's primarily a zsh user, while I like bash, but I'm going to iron that out.
   If you're on OS X: git checkout osx
   If you're on Ubuntu: git checkout ubuntu
   rake install
+  optional: gem install RedCloth bluecloth github-markup ronn (for the markup-preview plugin)
 
 
 == Environment
@@ -34,7 +35,7 @@ can easily be accessed (and tab completed) with the "c" command.
 
   c railsca<tab>
 
-There is also an "h" command which behaves similar, but acts on the 
+There is also an "h" command which behaves similarly, but acts on the 
 home path.
 
   h doc<tab>

vim/autoload/preview.vim

@@ -0,0 +1,332 @@
+" ============================================================================
+" File:        preview.vim
+" Description: Vim global plugin to preview markup files(markdown,rdoc,textile)
+" Author:      Sergey Potapov (aka Blake) <blake131313 AT gmail DOT com>
+" Version:     0.8
+" Homepage:    http://github.com/greyblake/vim-preview
+" License:     GPLv2+ -- look it up.
+" Copyright:   Copyright (C) 2010-2011 Sergey Potapov (aka Blake)
+"
+"              This program is free software; you can redistribute it and/or
+"              modify it under the terms of the GNU General Public License as
+"              published by the Free Software Foundation; either version 2 of
+"              the License, or (at your option) any later version.
+"
+"              This program is distributed in the hope that it will be useful,
+"              but WITHOUT ANY WARRANTY; without even the implied warranty of
+"              MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+"              General Public License for more details.
+"
+"              You should have received a copy of the GNU General Public License
+"              along with this program; if not, write to the Free Software
+"              Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+"              MA 02111-1307 USA
+" ============================================================================
+
+
+
+
+function! s:load()
+ruby << END_OF_RUBY
+require 'singleton'
+require 'tempfile'
+require 'tmpdir'
+require 'rubygems'
+require 'shellwords'
+
+class Preview
+  include Singleton
+
+  OPTIONS = {
+    :browsers     => "g:PreviewBrowsers",
+    :css_path     => "g:PreviewCSSPath",
+    :markdown_ext => "g:PreviewMarkdownExt",
+    :textile_ext  => "g:PreviewTextileExt",
+    :rdoc_ext     => "g:PreviewRdocExt",
+    :ronn_ext     => "g:PreviewRonnExt",
+    :html_ext     => "g:PreviewHtmlExt",
+    :rst_ext      => "g:PreviewRstExt"
+  }
+
+  DEPENDECIES = {
+    # :format => {:gem => 'name of gem'  , :require => 'file to require'}
+    :markdown => {:gem => 'bluecloth'    , :require => 'bluecloth'      },
+    :textile  => {:gem => 'RedCloth'     , :require => 'redcloth'       },
+    :rdoc     => {:gem => 'github-markup', :require => 'github/markup'  },
+    :ronn     => {:gem => 'ronn'         , :require => 'ronn'           },
+    :rst      => {:gem => 'RbST'         , :require => 'rbst'           }
+  }
+
+  def show
+    update_fnames
+    ext_opts = OPTIONS.keys.find_all{|k| k.to_s =~ /_ext$/}
+    ext_opts.each do |opt|
+      if exts_match?(option(opt).split(','))
+        send "show_" + opt.to_s[/^(.*)_ext$/, 1]
+        return
+      end
+    end
+    error "don't know how to handle .#{filetype} format"
+  rescue Exception => error
+    puts "#{error.class}: #{error.message}"
+    puts error.backtrace
+  end
+
+  def show_markdown
+    return unless load_dependencies(:markdown)
+    show_with(:browser) do
+      wrap_html BlueCloth.new(content).to_html
+    end
+  end
+
+  def show_html
+    show_with(:browser){content}
+  end
+
+  def show_rdoc
+    return unless load_dependencies(:rdoc)
+    show_with(:browser) do
+      wrap_html GitHub::Markup::RDoc.new(content).to_html
+    end
+  end
+
+  def show_textile
+    return unless load_dependencies(:textile)
+    show_with(:browser) do
+      wrap_html RedCloth.new(content).to_html
+    end
+  end
+
+  # Syntax for Ronn::Document.new is different as it expects (content) to be a file
+  # TODO: Work out how to read in a string.
+
+  def show_ronn
+    return unless load_dependencies(:ronn)
+    show_with(:browser) do
+      tmp_file = Tempfile.new(@base_name + ".ronn"){|f| f.write(content)}
+      wrap_html Ronn::Document.new(tmp_file.path).to_html
+    end
+  end
+
+  def show_rst
+    return unless load_dependencies(:rst)
+    show_with(:browser) do
+      wrap_html RbST.new(content).to_html
+    end
+  end
+
+  private
+
+  # TODO: handle errors when app can't be opened
+  def show_with(app_type, ext="html")
+    fpath = tmp_write(ext, yield)
+    app = get_apps_by_type(app_type).find{|app| which(app.split()[0]) }
+    app_path = which(app.split()[0])
+    args = app.shellsplit()[1..-1] << fpath
+    if app_path
+      cmd = "#{app_path} #{args.shelljoin} &"
+      VIM.command "call system('#{cmd}')"
+      VIM.command "redraw"
+    else
+      error "any of apllications you specified in #{OPTIONS[app_type_to_opt(app_type)]} are not available"
+    end
+  end
+
+  def which(cmd)
+    ENV['PATH'].split(':').each do |dir|
+      fpath = File.join(dir, cmd)
+      return fpath if File.executable?(fpath)
+    end
+    false
+  end
+
+  def update_fnames
+    @filename = VIM::Buffer.current.name || Time.now.to_i.to_s
+    @base_name = File.basename(@filename)
+    @base_path = @filename.gsub(@base_name, "")
+  end
+
+  def get_apps_by_type(type)
+    option(app_type_to_opt(type)).split(',')
+  end
+
+  def app_type_to_opt(type)
+    case type
+    when :browser
+      :browsers
+    else
+      raise "Undefined application type #{type}"
+    end
+  end
+
+  def exts_match?(exts)
+    exts.find{|ext| ext.downcase == filetype.downcase}
+  end
+
+  def filetype
+    update_fnames
+    from_option = VIM.evaluate("&filetype")
+    from_filename = @filename[/\.([^.]+)$/, 1]
+    from_option.nil? ? from_filename : from_option
+  end
+
+  def tmp_write(ext, data)
+    tmp = File.open(File.join(Dir::tmpdir, [@base_name,ext].join('.')), 'w')
+    #tmp = Tempfile.new(@base_name)
+    tmp.write(data)
+    tmp.close
+    tmp.path
+  end
+
+  def content
+    text = ""
+    VIM::Buffer.current.count.times do |i|
+      text += VIM::Buffer.current[i+1] + "\n"
+    end
+    text
+  end
+
+  def error(msg)
+    puts("Preview: #{msg}")
+  end
+
+  def wrap_html(body)
+    <<-END_OF_HTML
+      <html>
+        <head>
+          <title>#{@base_name}</title>
+          #{css_tag}
+          #{base_tag}
+        </head>
+        <body>
+          <div id="main-container">
+            #{body}
+          <div>
+        </body>
+      </html>
+    END_OF_HTML
+  end
+
+  def css_tag
+    if option(:css_path).empty?
+      %Q(<style type="text/css">#{css}</style>)
+    else
+      %Q(<link rel="stylesheet" href="#{option(:css_path)}" type="text/css" />)
+    end
+  end
+
+  def base_tag
+    %Q{<base href="file://localhost/#{@base_path}" />}
+  end
+
+  def option(name)
+    raise "Unknown option #{name.inspect}" unless OPTIONS.keys.include?(name)
+    VIM.evaluate(OPTIONS[name])
+  end
+
+  def load_dependencies(format)
+    require DEPENDECIES[format][:require]
+    true
+  rescue LoadError
+    error "To preview #{format} format you need to install #{DEPENDECIES[format][:gem]} gem"
+    false
+  end
+
+  def css
+    <<-END_OF_CSS
+      body{
+        background-color: #FFFFFF;
+        padding: 20px;
+        margin: 0px;
+      }
+      pre{
+        border: solid #DEDEDE 1px;
+        background-color: #F6F6F6;
+        padding: 4px;
+      }
+      code{
+        border: solid #DEDEDE 1px;
+        background-color: #F6F6F6;
+        padding: 1px;
+        font-family: monospace;
+      }
+      pre > code{
+        border: none;
+        padding: none;
+      }
+      blockquote{
+        border: dashed #AEAEAE 1px;
+        background-color: #F6F6F6;
+        padding: 4px 10px 4px 10px;
+        font-family: monospace;
+      }
+      div#main-container{
+        background-color: #F2F2F2;
+        padding: 20px;
+        margin: 0px;
+        border: solid #D0D0D0 1px;
+      }
+    END_OF_CSS
+  end
+end
+END_OF_RUBY
+endfunction
+
+
+function! s:init()
+    if(!(exists('s:loaded') && s:loaded))
+        call s:load()
+        let s:loaded = 1
+    endif
+endfunction
+
+
+
+function! preview#show()
+call s:init()
+ruby << END_OF_RUBY
+    Preview.instance.show
+END_OF_RUBY
+endfunction
+
+function! preview#show_markdown()
+call s:init()
+ruby << END_OF_RUBY
+    Preview.instance.show_markdown
+END_OF_RUBY
+endfunction
+
+function! preview#show_textile()
+call s:init()
+ruby << END_OF_RUBY
+    Preview.instance.show_textile
+END_OF_RUBY
+endfunction
+
+function! preview#show_rdoc()
+call s:init()
+ruby << END_OF_RUBY
+    Preview.instance.show_rdoc
+END_OF_RUBY
+endfunction
+
+function! preview#show_html()
+call s:init()
+ruby << END_OF_RUBY
+    Preview.instance.show_html
+END_OF_RUBY
+endfunction
+
+function! preview#show_ronn()
+call s:init()
+ruby << END_OF_RUBY
+    Preview.instance.show_ronn
+END_OF_RUBY
+endfunction
+
+function! preview#show_rst()
+call s:init()
+ruby << END_OF_RUBY
+    Preview.instance.show_rst
+END_OF_RUBY
+endfunction