texinfo/info_translator.py

   1 from docutils import nodes
   2 import exceptions
   3
   4 class InfoTranslator(nodes.NodeVisitor):
   5
   6     document_start = """\\input texinfo  @c -*-texinfo-*-
   7 """
   8
   9     def __init__(self, document):
  10         nodes.NodeVisitor.__init__(self, document)
  11         self.settings = document.settings
  12         self.header = []
  13         self.body = []
  14         self.section_level = 0
  15         self.system_message_level = 0
  16         self.docinfo = {}
  17
  18     def astext(self):
  19         return '\n'.join(self.header + self.body + [''])
  20
  21     def visit_document(self, node):
  22         self.header.append(self.document_start)
  23
  24     def depart_document(self, node):
  25         pass
  26
  27     def visit_comment(self, node):
  28         self.body.append('@c %s' % node.astext())
  29         raise nodes.SkipNode
  30
  31     def visit_section(self, node):
  32         self.section_level += 1
  33         #self.body.append('@c +s %d' % self.section_level)
  34
  35     def depart_section(self, node):
  36         self.section_level -= 1
  37         #self.body.append('@c -s %d' % self.section_level)
  38
  39     def emit_title(self, text):
  40         self.body.append('@node Top')
  41         self.body.append('@top %s' % text)
  42
  43     def emit_chapter(self, text):
  44         self.body.append('@chapter %s' % text)
  45
  46     def emit_section(self, text):
  47         self.body.append('@section %s' % text)
  48
  49     def emit_subsection(self, text):
  50         self.body.append('@subsection %s' % text)
  51
  52     def visit_title(self, node):
  53         title_functions = [self.emit_title, self.emit_chapter, self.emit_section, self.emit_subsection]
  54         try:
  55             f = title_functions[self.section_level]
  56         except exceptions.IndexError:
  57             f = self.emit_subsection
  58             #self.body.append('@c section_level %d' % self.section_level)
  59         f(node.astext())
  60         raise nodes.SkipNode
  61
  62     def visit_subtitle(self, node):
  63         self.body.append('@majorheading %s' % node.astext())
  64         raise nodes.SkipNode
  65
  66     def visit_paragraph(self, node):
  67         if self.system_message_level > 0:
  68             self.body.append('@c %s' % node.astext())
  69         else:
  70             self.body.append(node.astext())
  71             self.body.append('')
  72         raise nodes.SkipNode
  73
  74     def visit_bullet_list(self, node):
  75         self.body.append('@itemize @bullet')
  76
  77     def depart_bullet_list(self, node):
  78         self.body.append('@end @itemize')
  79
  80     def visit_enumerated_list(self, node):
  81         self.body.append('@enumerate')
  82
  83     def depart_enumerated_list(self, node):
  84         self.body.append('@end enumerate')
  85
  86     def visit_list_item(self, node):
  87         self.body.append('@item')
  88
  89     def depart_list_item(self, node):
  90         pass
  91
  92     def visit_literal(self, node):
  93         raise nodes.SkipNode
  94
  95     def visit_literal_block(self, node):
  96         self.body.append(node.astext())
  97         raise nodes.SkipNode
  98
  99     def visit_block_quote(self, node):
 100         self.body.append('@quotation')
 101
 102     def depart_block_quote(self, node):
 103         self.body.append('@end quotation')
 104
 105     def visit_system_message(self, node):
 106         # from rst2man
 107         print "node['level']=%s, self.settings.report_level=%s" % (node['level'], self.settings.report_level)
 108         if node['level'] < self.settings.report_level: #self.document.reporter['writer'].report_level:
 109             # Level is too low to display:
 110             raise nodes.SkipNode
 111         attr = {}
 112         backref_text = ''
 113         if node.hasattr('id'):
 114             attr['name'] = node['id']
 115         if node.hasattr('line'):
 116             line = ', line %s' % node['line']
 117         else:
 118             line = ''
 119         self.body.append('@c System Message: %s/%s (%s:%s)'
 120                          % (node['type'], node['level'], node['source'], line))
 121         self.system_message_level += 1
 122
 123     def depart_system_message(self, node):
 124         self.system_message_level -= 1
 125         self.body.append('@c --end system message--')