kc3-lang/libxml2/codegen/genEscape.py

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• Hash : 149c04c0
  Author :
  Date : 2025-08-02T14:59:02
  

  html: Escape < and > when serializing attributes
  
  This reverts the change in cdaf657f. Coincidentally, the HTML spec just
  changed to mandate the old escaping behavior:
  
  https://github.com/whatwg/html/issues/6235
  
  Fixes #957.
  

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• codegen/genEscape.py

• #!/usr/bin/env python3
  
  entities = [
      [ '',   '�' ],
      [ '\t', '	' ],
      [ '\n', '
' ],
      [ '\r', '
' ],
      [ '"',  '"' ],
      [ '&',  '&' ],
      [ '<',  '&lt;' ],
      [ '>',  '&gt;' ],
  ]
  
  offset = [ None ] * 128
  
  def gen_content(out):
      pos = 0
      r = ''
  
      for rec in entities:
          char, repl = rec
  
          if char:
              offset[ord(char)] = pos
  
          if pos % 12 == 0: r += '\n    '
          else: r += ' '
          r += '%3d,' % len(repl)
          pos += 1
  
          for c in repl:
              if pos % 12 == 0: r += '\n    '
              else: r += ' '
              r += "'%s'," % c
              pos += 1
  
      out.write('static const char xmlEscapeContent[] = {%s\n};\n\n' % r)
  
  def gen_tab(out, name, escape, is_xml):
      r = ''
  
      for i in range(0x80):
  
          if chr(i) in escape:
              v = offset[i]
          elif i == 0:
              v = 0
          elif is_xml and i < 32 and i != 9 and i != 10:
              v = 0
          else:
              v = -1
  
          if i % 16 == 0: r += '\n    '
          else: r += ' '
          r += '%2d,' % v
  
      out.write('static const signed char %s[128] = {%s\n};\n\n' % (name, r))
  
  with open('codegen/escape.inc', 'w') as out:
      gen_content(out)
  
      gen_tab(out, 'xmlEscapeTab', '\r&<>', True)
      gen_tab(out, 'xmlEscapeTabQuot', '\r"&<>', True)
      gen_tab(out, 'xmlEscapeTabAttr', '\t\n\r"&<>', True)
  
      out.write('#ifdef LIBXML_HTML_ENABLED\n\n')
      gen_tab(out, 'htmlEscapeTab', '&<>', False)
      gen_tab(out, 'htmlEscapeTabAttr', '"&<>', False)
      out.write('#endif /* LIBXML_HTML_ENABLED */\n')
  

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