Module: Bike::Parser

Defined in:
lib/_parser.rb

Overview

Author

Akira FUNAI

Copyright

Copyright © 2009 Akira FUNAI

Class Method Summary collapse

Class Method Details

.gsub_action_tmpl(html, &block) ⇒ Object 



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# File 'lib/_parser.rb', line 58

def gsub_action_tmpl(html, &block)
  rex_klass = /(?:\w+\-)?(?:action|view|navi|submit|done)\w*/
  gsub_block(html, rex_klass) {|open, inner, close|
    klass = open[/class=(?:"|"[^"]*?\s)(#{rex_klass})(?:"|\s)/, 1]
    id, action = (klass =~ /-/) ? klass.split('-', 2) : [nil, klass]
    block.call(id, action.intern, open, inner, close)
  }
end

.gsub_block(html, class_name, &block) ⇒ Object 



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# File 'lib/_parser.rb', line 67

def gsub_block(html, class_name, &block)
  rex_open_tag = /\s*<(\w+)[^>]+?class=(?:"|"[^"]*?\s)#{class_name}(?:"|\s).*?>\n?/i 
  out = ''
  s = StringScanner.new html
  until s.eos?
    out << skip_comment(s)
    if s.scan rex_open_tag
      open_tag = s[0]
      inner_html, close_tag = scan_inner_html(s, s[1])
      close_tag << "\n" if s.scan /\n/
      out << block.call(open_tag, inner_html, close_tag)
    else
      out << s.scan(/.+?(?=\t| |<|\z)/m).to_s
    end
  end
  out
end

.gsub_scalar(html, &block) ⇒ Object 



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# File 'lib/_parser.rb', line 85

def gsub_scalar(html, &block)
  out = ''
  s = StringScanner.new html
  until s.eos?
    out << skip_comment(s)
    if s.scan /\$\((\w+)(?:\s+|\s*=\s*)([\w\-]+)\s*/m
      out << block.call(s[1], {:klass => s[2]}.merge(scan_tokens(s)))
    else
      out << s.scan(/.+?(?=\$|<!|\z)/m).to_s
    end
  end
  out
end

.parse_block(open_tag, inner_html, close_tag, action = :index, xml = false) ⇒ Object 



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# File 'lib/_parser.rb', line 154

def parse_block(open_tag, inner_html, close_tag, action = :index, xml = false)
  open_tag.sub!(/id=".*?"/i, 'id="@(name)"')
  workflow = open_tag[/class=(?:"|".*?\s)(?:app|runo)-(\w+)/, 1] # "runo" is obsolete at 0.1.1

  if inner_html =~ /<(?:\w+).+?class=(?:"|"[^"]*?\s)(model|body)(?:"|\s)/i # "body" is obsolete at 0.1.1
    item_html = ''
    sd_tmpl = gsub_block(inner_html, Regexp.last_match(1)) {|open, inner, close|
      item_html = open + inner + close
      '$()'
    }
  else
    item_html = inner_html
    sd_tmpl = '$()'
  end

  tmpl = {}
  sd_tmpl = gsub_action_tmpl(sd_tmpl) {|id, act, open, inner, close|
    inner = gsub_action_tmpl(inner) {|i, a, *t|
      tmpl[a] = t.join
      "$(.#{a})"
    }
    tmpl[act] = open + inner + close
    "$(.#{act})"
  }

  tmpl[action] = "#{open_tag}#{sd_tmpl}#{close_tag}"
  tmpl[action].gsub!(/\s*class=".*?"/,'') if xml

  item_meta = Bike::Parser.parse_html(item_html, action, xml)
  supplement_ss(item_meta[:tmpl][action], action) unless xml || workflow == 'attachment'

  sd = {
    :klass    => 'set-dynamic',
    :workflow => workflow.downcase,
    :tmpl     => tmpl,
    :item     => {
      'default' => item_meta,
    },
  }
  (inner_html =~ /\A\s*<!--(.+?)-->/m) ? sd.merge(scan_tokens(StringScanner.new($1))) : sd
end

.parse_html(html, action = :index, xml = false) ⇒ Object 



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# File 'lib/_parser.rb', line 10

def parse_html(html, action = :index, xml = false)
  item = {}

  html = gsub_block(html, '(?:app|runo)-\w+') {|open, inner, close| # "runo" is obsolete at 0.1.1
    id = open[/id="(.+?)"/i, 1] || 'main'
    item[id] = parse_block(open, inner, close, action, xml)
    "$(#{id})"
  }
  html = gsub_action_tmpl(html) {|id, act, open, inner, close|
    id ||= 'main'
    if item[id]
      item[id][:tmpl] ||= {}
      inner = gsub_action_tmpl(inner) {|i, a, *t|
        item[id][:tmpl][a] = t.join
        "$(.#{a})"
      }
      item[id][:tmpl][act] = open + inner + close
      "$(#{id}.#{act})"
    else
      open + inner + close
    end
  }
  item.each {|id, meta|
    m = Proc.new {|a| html.include?("$(#{id}.#{a})") || meta[:tmpl][action].include?("$(.#{a})") }
    supplement_sd(meta[:tmpl][action], meta[:workflow], m)
    html.sub!("$(#{id})", "$(#{id}.message)\\&") unless (
      meta[:workflow] == 'attachment' || m.call('message')
    )
  } unless xml

  html = gsub_scalar(html) {|id, meta|
    item[id] = meta
    "$(#{id})"
  }
  html.gsub!(/\s*class=".*?"/,'') if xml

  meta = scrape_meta html
  meta.merge(
    :label => meta[:label] || scrape_label(html),
    :item  => item,
    :tmpl  => {action => html}
  )
end

.parse_token(prefix, token, meta = {}) ⇒ Object 



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# File 'lib/_parser.rb', line 196

def parse_token(prefix, token, meta = {})
  case prefix
    when ':'
      meta[:default] = token
    when ';'
      meta[:defaults] ||= []
      meta[:defaults] << token
    when ','
      meta[:options] ||= []
      meta[:options] << token
    else
      case token
        when /^(-?\d+)?\.\.(-?\d+)?$/
          meta[:min] = $1.to_i if $1
          meta[:max] = $2.to_i if $2
        when /^(\d+)\*(\d+)$/
          meta[:width]  = $1.to_i
          meta[:height] = $2.to_i
        else
          meta[:tokens] ||= []
          meta[:tokens] << token
      end
  end
  meta
end

.parse_xml(html, action = :index) ⇒ Object 



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# File 'lib/_parser.rb', line 54

def parse_xml(html, action = :index)
  parse_html(html, action, xml = true)
end

.scan_inner_html(s, name) ⇒ Object 



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# File 'lib/_parser.rb', line 222

def scan_inner_html(s, name)
  open_tag  = "<#{name}"
  close_tag = {'!--' => '-->', '<![CDATA[' => ']]>'}[name] || "</#{name}>"
  contents = ''
  rex = /(.*?)(#{Regexp.quote(open_tag)}|#{Regexp.quote(close_tag)}|\z)/m
  gen = 1
  until s.eos? || (gen < 1)
    contents << s.scan(rex)
    gen += 1 if s[2] == open_tag
    gen -= 1 if s[2] == close_tag
  end
  contents.gsub!(/\A\n+/, '')
  contents.gsub!(/[\t ]*#{Regexp.quote(close_tag)}\z/, '')
  [contents, $&]
end

.scan_tokens(s) ⇒ Object 



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# File 'lib/_parser.rb', line 238

def scan_tokens(s)
  meta = {}
  until s.eos? || s.scan(/\)/)
    prefix = s[1] if s.scan /([:;,])?\s*/
    if s.scan /(["'])(.*?)(\1|$)/
      token = s[2]
    elsif s.scan /[^\s\):;,]+/
      token = s[0]
    end
    prefix ||= ',' if s.scan /(?=,)/ # 1st element of options
    prefix ||= ';' if s.scan /(?=;)/ # 1st element of defaults

    parse_token(prefix, token, meta)
    s.scan /\s+/
  end
  meta
end

.scrape_label(html) ⇒ Object 



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# File 'lib/_parser.rb', line 116

def scrape_label(html)
  if html.sub!(/\A((?:[^<]*<!--)?[^<]*<[^>]*title=")([^"]+)/, '\\1')
    label_plural = $2.to_s.split(/,/).collect {|s| s.strip }
    label_plural *= 4 if label_plural.size == 1
    label = label_plural.first
    Bike::I18n.msg[label] ||= label_plural
    label
  end
end

.scrape_meta(html) ⇒ Object 



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# File 'lib/_parser.rb', line 107

def scrape_meta(html)
  meta = {}
  html.gsub!(/(?:^\s+)?<meta[^>]*name="bike-([^"]+)[^>]*content="([^"]+).*?>\n?/i) {
    meta[$1.intern] = $2.include?(',') ? $2.split(/\s*,\s*/) : $2
    ''
  }
  meta
end

.skip_comment(s) ⇒ Object 



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# File 'lib/_parser.rb', line 99

def skip_comment(s)
  if s.scan /\s*<(!--|!\[CDATA\[)\n*/
    s[0] + scan_inner_html(s, s[1]).join + (s.scan(/\n/) || '')
  else
    ''
  end
end

.supplement_sd(tmpl, workflow, m) ⇒ Object 



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# File 'lib/_parser.rb', line 126

def supplement_sd(tmpl, workflow, m)
  tmpl << '$(.navi)' unless m.call 'navi'
  unless workflow == 'attachment'
    tmpl << '$(.submit)'        unless m.call 'submit'
    tmpl << '$(.action_create)' unless m.call 'action_create'
  end
  tmpl
end

.supplement_ss(tmpl, action) ⇒ Object 



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# File 'lib/_parser.rb', line 135

def supplement_ss(tmpl, action)
  if action == :summary
    tmpl.sub!(
      /\$\(.*?\)/m,
      '<a href="$(.uri_detail)">\&</a>'
    ) unless tmpl.include? '$(.uri_detail)'
  else
    tmpl.sub!(
      /\$\([^\.]*?\)/m,
      '$(.a_update)\&</a>'
    ) unless tmpl.include? '$(.action_update)'
    tmpl.sub!(
      /.*\$\(.*?\)/m,
      '\&$(.hidden)'
    ) unless tmpl.include? '$(.hidden)'
  end
  tmpl
end