lxml.html.defs

Package lxml :: Package html :: Module defs |
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# Source Code for Module lxml.html.defs

      1  # FIXME: this should all be confirmed against what a DTD says
      2  # (probably in a test; this may not match the DTD exactly, but we
      3  # should document just how it differs).
      4
      5  # Data taken from http://www.w3.org/TR/html401/index/elements.html
      6  # and http://www.w3.org/community/webed/wiki/HTML/New_HTML5_Elements
      7  # for html5_tags.
      8
      9  empty_tags = frozenset([
     10      'area', 'base', 'basefont', 'br', 'col', 'frame', 'hr',
     11      'img', 'input', 'isindex', 'link', 'meta', 'param'])
     12
     13  deprecated_tags = frozenset([
     14      'applet', 'basefont', 'center', 'dir', 'font', 'isindex',
     15      'menu', 's', 'strike', 'u'])
     16
     17  # archive actually takes a space-separated list of URIs
     18  link_attrs = frozenset([
     19      'action', 'archive', 'background', 'cite', 'classid',
     20      'codebase', 'data', 'href', 'longdesc', 'profile', 'src',
     21      'usemap',
     22      # Not standard:
     23      'dynsrc', 'lowsrc',
     24      ])
     25
     26  # Not in the HTML 4 spec:
     27  # onerror, onresize
     28  event_attrs = frozenset([
     29      'onblur', 'onchange', 'onclick', 'ondblclick', 'onerror',
     30      'onfocus', 'onkeydown', 'onkeypress', 'onkeyup', 'onload',
     31      'onmousedown', 'onmousemove', 'onmouseout', 'onmouseover',
     32      'onmouseup', 'onreset', 'onresize', 'onselect', 'onsubmit',
     33      'onunload',
     34      ])
     35
     36  safe_attrs = frozenset([
     37      'abbr', 'accept', 'accept-charset', 'accesskey', 'action', 'align',
     38      'alt', 'axis', 'border', 'cellpadding', 'cellspacing', 'char', 'charoff',
     39      'charset', 'checked', 'cite', 'class', 'clear', 'cols', 'colspan',
     40      'color', 'compact', 'coords', 'datetime', 'dir', 'disabled', 'enctype',
     41      'for', 'frame', 'headers', 'height', 'href', 'hreflang', 'hspace', 'id',
     42      'ismap', 'label', 'lang', 'longdesc', 'maxlength', 'media', 'method',
     43      'multiple', 'name', 'nohref', 'noshade', 'nowrap', 'prompt', 'readonly',
     44      'rel', 'rev', 'rows', 'rowspan', 'rules', 'scope', 'selected', 'shape',
     45      'size', 'span', 'src', 'start', 'summary', 'tabindex', 'target', 'title',
     46      'type', 'usemap', 'valign', 'value', 'vspace', 'width'])
     47
     48  # From http://htmlhelp.com/reference/html40/olist.html
     49  top_level_tags = frozenset([
     50      'html', 'head', 'body', 'frameset',
     51      ])
     52
     53  head_tags = frozenset([
     54      'base', 'isindex', 'link', 'meta', 'script', 'style', 'title',
     55      ])
     56
     57  general_block_tags = frozenset([
     58      'address',
     59      'blockquote',
     60      'center',
     61      'del',
     62      'div',
     63      'h1',
     64      'h2',
     65      'h3',
     66      'h4',
     67      'h5',
     68      'h6',
     69      'hr',
     70      'ins',
     71      'isindex',
     72      'noscript',
     73      'p',
     74      'pre',
     75      ])
     76
     77  list_tags = frozenset([
     78      'dir', 'dl', 'dt', 'dd', 'li', 'menu', 'ol', 'ul',
     79      ])
     80
     81  table_tags = frozenset([
     82      'table', 'caption', 'colgroup', 'col',
     83      'thead', 'tfoot', 'tbody', 'tr', 'td', 'th',
     84      ])
     85
     86  # just this one from
     87  # http://www.georgehernandez.com/h/XComputers/HTML/2BlockLevel.htm
     88  block_tags = general_block_tags | list_tags | table_tags | frozenset([
     89      # Partial form tags
     90      'fieldset', 'form', 'legend', 'optgroup', 'option',
     91      ])
     92
     93  form_tags = frozenset([
     94      'form', 'button', 'fieldset', 'legend', 'input', 'label',
     95      'select', 'optgroup', 'option', 'textarea',
     96      ])
     97
     98  special_inline_tags = frozenset([
     99      'a', 'applet', 'basefont', 'bdo', 'br', 'embed', 'font', 'iframe',
    100      'img', 'map', 'area', 'object', 'param', 'q', 'script',
    101      'span', 'sub', 'sup',
    102      ])
    103
    104  phrase_tags = frozenset([
    105      'abbr', 'acronym', 'cite', 'code', 'del', 'dfn', 'em',
    106      'ins', 'kbd', 'samp', 'strong', 'var',
    107      ])
    108
    109  font_style_tags = frozenset([
    110      'b', 'big', 'i', 's', 'small', 'strike', 'tt', 'u',
    111      ])
    112
    113  frame_tags = frozenset([
    114      'frameset', 'frame', 'noframes',
    115      ])
    116
    117  html5_tags = frozenset([
    118      'article', 'aside', 'audio', 'canvas', 'command', 'datalist',
    119      'details', 'embed', 'figcaption', 'figure', 'footer', 'header',
    120      'hgroup', 'keygen', 'mark', 'math', 'meter', 'nav', 'output',
    121      'progress', 'rp', 'rt', 'ruby', 'section', 'source', 'summary',
    122      'svg', 'time', 'track', 'video', 'wbr'
    123      ])
    124
    125  # These tags aren't standard
    126  nonstandard_tags = frozenset(['blink', 'marquee'])
    127
    128
    129  tags = (top_level_tags | head_tags | general_block_tags | list_tags
    130          | table_tags | form_tags | special_inline_tags | phrase_tags
    131          | font_style_tags | nonstandard_tags | html5_tags)
    132