Class: W2Tags::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/w2tags/parser.rb

Overview

Copyright © 2008 - 2009 Widi Harsojo

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(mrg = nil) ⇒ Parser

initiall create instance object, default if no arguments will be target for html



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# File 'lib/w2tags/parser.rb', line 15

def initialize(mrg = nil)
  @dbg={
    :hot      =>nil,
    :stack    =>nil,
    :parse    =>nil,
    :constanta=>nil
  }
  
  #regex for w2tags   
  @rg_tag = [
  /^[ \t]*(%)([!]?[\w\-&\/:#.\[\]]+\{.*\}[=]*)!([^\n]*)\n/,
  /^[ \t]*(%)([!]?[\w\-&\/:#.\[\]=]+)!([^\n]*)([\n])/]
  
  #regex for function tags    
  @rg_hot = [
  /(%)([!]?[ \t\$\w\-&\/:#.\[\]%=]+\{.*\}[=]*)~([^\n]*)\n/,
  /(%)([!]?[ \t\$\w\-&\/:#.\[\]%=]+)~([^\n]*)\n/    ]
  @rgx    =  nil   #current regular expression
  @mrg    =  mrg   #another hot to include
  @ext    = 'erb'  #target extension 
  @hot    = 'hot'  #source of file hot
  @src_path= ''    #path for source file
  @silent = false  #for test

  @ron    = 0      #strip current source line if size it empty or not
  @spc    = ''     #current begining space of current source line
  @ind    = '  '   #indentation size
  @row    = 'row'  #current source line
  @key    = 'key'  #key extracted from regex function

  @mem_hot= nil    #@tg_nex will be use (for "%") if this var == nil
  @mem_tag= {'^'=>"%div$*!"} #get memorize of w2tag 
  @mem_var= {'$me'=>"wharsojo"}
  @mem_var['$basepath'] = File.basename(File.expand_path('.'))

  @tg_hot = {}     #{'div'=>[proc{|this|"%div$*!"},nil]} #collection of tag_hot after reading from source hot
  @tg_nex = {}     #tag next activate on shortcut tag "%"
  @tg_end = []     #momorize tag end from regex function
  @doc_src= []
  @doc_out= []
  
  @tagr = proc do |this|
    @key.strip!
    tags_created =  "<#{@key}"
    tags_created << " #{@mem_var["*all*"].strip}" if @mem_var["*all*"]!='' 
    #tags_created << " #{@att}" if @att!=''
    if @txt=='/'
      tags_created << "/>\n"
    else
      tags_created << '>'
      @ln_end = " "            
      if @txt=='' 
        @tg_end.push "#{@spc}</#{@key}>#{@ln_end}"
        p "Stack: #{@tg_end}" if @dbg[:stack]
      else
        if @txt.gsub!(/\<$/,'')
          @tg_end.push "#{@spc}</#{@key}>#{@ln_end}"
        else
          @ln_end = "</#{@key}>#{@ln_end}"
        end
        if @mem_var["*code*"] && @mem_var["*code*"]!=''
          tags_created << @mem_var["*code*"].gsub('$*',@txt)
        else
          tags_created << @txt.gsub(/^ +/,'') #remove gsub if don't want auto trim left
        end
      end
    end
    tags_created
  end
  @skiper= []
  public_methods.each do |f|
    send(f) if /_initialize$/ =~ (meth= f.to_s)
    @skiper << [$1,'_skip'].join.to_sym if /(.*)_skip$/ =~ meth
  end
end

Instance Attribute Details

#dbg ⇒ Object

change debuging ex: obj.dbg = true



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# File 'lib/w2tags/parser.rb', line 6

def dbg
  @dbg
end

#ext ⇒ Object

set extention for ext auto loading HOT files



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# File 'lib/w2tags/parser.rb', line 8

def ext
  @ext
end

#silent ⇒ Object

Returns the value of attribute silent.



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# File 'lib/w2tags/parser.rb', line 4

def silent
  @silent
end

#spc ⇒ Object (readonly)

Returns the value of attribute spc.



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# File 'lib/w2tags/parser.rb', line 9

def spc
  @spc
end

Instance Method Details

#chg_mem_hot(nxt) ⇒ Object

call from proc hot before it render hots line see in source code “w2tags.rb::read_filehot” default behaviour for tag_nex will not execute since @mem_hot will assigned w/o nil assigned nil using “%!” in w2tags



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# File 'lib/w2tags/parser.rb', line 247

def chg_mem_hot(nxt)
  @mem_hot      = nxt      
  @mem_tag["^"] = nxt if nxt
end

#end_tags(arr) ⇒ Object 



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# File 'lib/w2tags/parser.rb', line 238

def end_tags(arr)
  @tg_end = @tg_end + arr
end

#multi_end(ttls) ⇒ Object

pop up end tags from the stack result will be string contains end tags from stack who’s space inside each end tags > current space



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# File 'lib/w2tags/parser.rb', line 255

def multi_end(ttls)
  rpls = ''
  ttl  = @tg_end.size-1
  ttl  = ttls-1 if ttls
  ttl.downto(0) do |i|
    sz = @tg_end[i][/^ +/].to_s.size
    if ttls || @spc.size <= sz
      send = @tg_end.pop.to_s
      if send.strip[0,5]=="!run!"
        scrpt = send.gsub("\n","\n#{@spc}").split("\n")
        @doc_src = scrpt[1,99]+@doc_src
      else
        spc = send[/(^[ \t]*)/,1].to_s
        rpls << send.gsub(/\n/,"\n#{spc}") + "\n" 
      end
    end
  end
  p "End..: #{rpls.strip}" if @dbg[:parse] && rpls!= ''
  rpls
end

#next_tag_init ⇒ Object 



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# File 'lib/w2tags/parser.rb', line 101

def next_tag_init
  @tg_nex['html'  ]= [0,proc { @mem_tag["^"] = "%head $*\n"}]
  @tg_nex['head'  ]= [0,proc { @mem_tag["^"] = "%body $*\n"}]
  @tg_nex['ol'    ]= [0,proc { @mem_tag["^"] = "%li $0\n"  }]
  @tg_nex['ul'    ]= [0,proc { @mem_tag["^"] = "%li $0\n"  }]
  @tg_nex['dl'    ]= [0,proc { @mem_tag["^"] = "%dt $0\n"  }]
  @tg_nex['dd'    ]= [0,proc { @mem_tag["^"] = "%dt $0\n"  }]
  @tg_nex['form'  ]= [0,proc { @mem_tag["^"] = "%input $0\n"}]
  @tg_nex['select']= [0,proc { @mem_tag["^"] = "%option $0\n"}]
  @tg_nex['table' ]= [0,proc { @tg_nex['tr'][0]= 0 }]
  @tg_nex['tr'    ]= [0,proc { 
     @tg_nex['tr'   ][0]+= 1
     if @tg_nex['tr'][0]== 1
        @mem_tag["^"] = "%th $0\n" 
     else
        @mem_tag["^"] = "%td $0\n"
     end
  }]
end

#parse_file(src, init_start = true, chk_date = false) ⇒ Object

parse one w2tags, result will be name of the target file created



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# File 'lib/w2tags/parser.rb', line 217

def parse_file(src,init_start=true,chk_date=false)
  tgt,@ext = [src[/(.+\.)w2(\w+)$/,1]<<$2,$2]
  
  return nil if !File.exist?(src) #p "src: #{src} not found..."
  if chk_date && File.exist?(tgt)
    return nil if File.mtime(src) <= File.mtime(tgt)
  end
  
  puts "\nParsing W2Tags File:#{src}" 
  parsing(src,tgt,init_start)
  tgt
end

#parse_files(srcs, init_start = true) ⇒ Object

parse multiple w2tags files, result will be array of target file created



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# File 'lib/w2tags/parser.rb', line 231

def parse_files(srcs,init_start=true)
  srcs.collect do |src|
    src.gsub!(/\n/,'')
    parse_file(src,init_start)
  end.compact
end

#parse_init ⇒ Object

it use to clean all the definition and reloading the hot file



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# File 'lib/w2tags/parser.rb', line 92

def parse_init
  @tg_end   = [] #momorize tag end from regex function
  @doc_src  = []
  @doc_out  = []
  @tg_hot   = {} 
  merge_tags @mrg ? @mrg : @ext
  next_tag_init
end

#parse_line(row, init = true) ⇒ Object

to test parsing on source line and return will be the result, everytime it execude, it clean up and reloading the HOT files.



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# File 'lib/w2tags/parser.rb', line 173

def parse_line row,init=true
  parse_init if init
  dbg[:parse]= false
  @doc_src   = read_w2tags(row).split("\n") << ",/"
  #@doc_src   = row.delete("\r").split("\n") << ",/"
  while (@row= @doc_src.shift) do  #;p "row:#{@row}"
    parse_row
  end
  @doc_out
end

#parse_row(row = nil) ⇒ Object

the actual parsing on row, but it use for parsing the files not to test the source line, since some of the row have a command that has effect on source, result and the row will be empty, please use parse_line if you want to test interactively on IRB.



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# File 'lib/w2tags/parser.rb', line 188

def parse_row row=nil
    @row = row if row
    @row<<"\n"           #;p "row:#{@row}"
    p "_____> #{@row}" if @dbg[:parse] && @plt == 99 && @rmk == 99

    parse_spc
    
    @ln_end = ""        #imediate ends tag
    @row.gsub!(/\\\\/,'')  #esc char \\
    @row.gsub!('\}','')    #esc char \}
    @row.gsub!('\;','')    #esc char \;
    while (parse_all) do; end  
    @row.gsub!('','\\')
    @row.gsub!('','}')
    @row.gsub!('',';')
    if @ln_end!=""
      @row.gsub!(/([\n\t ]*$)/,'')
      @row << "#{@ln_end.strip}\n"
    end
    if @row.strip!="" # responsible for generating good output
      p "#####> #{@row}" if @dbg[:parse] 
      @doc_out << (@row.rstrip + "\n") 
      #@doc_out << @row.rstrip # not working for 
      #@doc_out << "\n"        # shortcut if elsif else 
    end
    @row
end

#parsing(src, tgt, init_start = true) ⇒ Object

parsing from fullpath source to the fullpath target/result with the option of auto add ‘initialize’ and ‘finalize’ for source file in w2tags only fill with LF it will not translate, since behaviour for “nnn”.split(“n”) will result in empty array if hot available it will add w2tags in: firstline with @initialize() lastline with @finalize() to not add, supply this function with init_start=false ex: parsing(“t.w2tst”,“t.tst”,false)



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# File 'lib/w2tags/parser.rb', line 136

def parsing(src,tgt,init_start=true)
  puts ">>#{src}"
  puts ">>#{tgt}"
  parse_init
  @src_path= File.dirname(src)
  @doc_src = read_w2tags(IO.read(src)).split("\n")
  @doc_src<< "%finallize" if @tg_hot['finallize' ]
  
  while (@row = @doc_src.shift) do  #;p "row:#{@row}"
    if init_start && !(/!hot!/ =~ @row)
      @doc_src,@row = [[@row]+@doc_src,"%initialize"] if @tg_hot['initialize']
      p "HEAD:#{init_start}"
      init_start  = false
    end
    parse_row
  end
  if @dbg[:constanta] 
    p "const_ "
    @mem_var.keys.sort.each {|k|p "#{k.ljust 10} : #{@mem_var[k]}"}
  end
  
  if @dbg[:hot]
    @tg_hot.keys.sort.each_with_index do |v,i|
      puts "hot keys: #{i}. #{v}"
    end
  end
  
  open(tgt,'w') do |f|
    @doc_out.each do |row|
      f << row
    end
  end
  
end

#read_w2tags(src, spc = nil) ⇒ Object 



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# File 'lib/w2tags/parser.rb', line 121

def read_w2tags(src,spc=nil)
  src = src.delete("\r").split(/\n\>\>\>W2TAGS\>\>\>/)
  @tg_hot.merge!(W2Tags.parsing_hot(src.shift)) if src.length>1
  (spc ? src[0].gsub("\n","\n"+@spc) : src[0]) 
end