texinfo/info_translator.py

   1 from docutils import nodes
   2 import exceptions
   3 import string
   4
   5 class InfoTranslator(nodes.NodeVisitor):
   6
   7     document_start = """\\input texinfo  @c -*-texinfo-*-
   8 """
   9
  10     def __init__(self, document):
  11         nodes.NodeVisitor.__init__(self, document)
  12         self.settings = document.settings
  13         self.header = []
  14         self.body = []
  15         self.section_level = 0
  16         self.system_message_level = 0
  17         self.docinfo = {}
  18
  19     def astext(self):
  20         return '\n'.join(self.header + self.body + [''])
  21
  22     def visit_document(self, node):
  23         self.header.append(self.document_start)
  24
  25     def depart_document(self, node):
  26         pass
  27
  28     def visit_comment(self, node):
  29         self.body.append('@c %s' % node.astext())
  30         raise nodes.SkipNode
  31
  32     def visit_section(self, node):
  33         self.section_level += 1
  34         #self.body.append('@c +s %d' % self.section_level)
  35
  36     def depart_section(self, node):
  37         self.section_level -= 1
  38         #self.body.append('@c -s %d' % self.section_level)
  39
  40     def emit_title(self, text):
  41         self.body.append('@node Top')
  42         self.body.append('@top %s' % text)
  43
  44     def emit_chapter(self, text):
  45         self.body.append('@chapter %s' % text)
  46
  47     def emit_section(self, text):
  48         self.body.append('@section %s' % text)
  49
  50     def emit_subsection(self, text):
  51         self.body.append('@subsection %s' % text)
  52
  53     def visit_title(self, node):
  54         title_functions = [self.emit_title, self.emit_chapter, self.emit_section, self.emit_subsection]
  55         try:
  56             f = title_functions[self.section_level]
  57         except exceptions.IndexError:
  58             f = self.emit_subsection
  59             #self.body.append('@c section_level %d' % self.section_level)
  60         f(node.astext())
  61         raise nodes.SkipNode
  62
  63     def visit_subtitle(self, node):
  64         self.body.append('@majorheading %s' % node.astext())
  65         raise nodes.SkipNode
  66
  67     def visit_paragraph(self, node):
  68         if self.system_message_level > 0:
  69             self.body.append('@c %s' % node.astext())
  70         else:
  71             self.body.append(node.astext())
  72             self.body.append('')
  73         raise nodes.SkipNode
  74
  75     def visit_bullet_list(self, node):
  76         self.body.append('@itemize @bullet')
  77
  78     def depart_bullet_list(self, node):
  79         self.body.append('@end @itemize')
  80
  81     def visit_enumerated_list(self, node):
  82         start = 1
  83         if node.has_key('start'):
  84             start = node['start']
  85         if node.has_key('enumtype'):
  86             if node['enumtype'] == 'upperalpha':
  87                 start =string.ascii_uppercase[start-1]
  88             if node['enumtype'] == 'loweralpha':
  89                 start =string.ascii_lowercase[start-1]
  90         self.body.append('@enumerate %s' % start)
  91
  92     def depart_enumerated_list(self, node):
  93         self.body.append('@end enumerate')
  94
  95     def visit_list_item(self, node):
  96         self.body.append('@item')
  97
  98     def depart_list_item(self, node):
  99         pass
 100
 101     def visit_literal(self, node):
 102         raise nodes.SkipNode
 103
 104     def visit_literal_block(self, node):
 105         self.body.append(node.astext())
 106         raise nodes.SkipNode
 107
 108     def visit_block_quote(self, node):
 109         self.body.append('@quotation')
 110
 111     def depart_block_quote(self, node):
 112         self.body.append('@end quotation')
 113
 114     def visit_system_message(self, node):
 115         # from rst2man
 116         if node['level'] < self.settings.report_level:
 117             raise nodes.SkipNode
 118         attr = {}
 119         backref_text = ''
 120         if node.hasattr('id'):
 121             attr['name'] = node['id']
 122         if node.hasattr('line'):
 123             line = ', line %s' % node['line']
 124         else:
 125             line = ''
 126         self.body.append('@c System Message: %s/%s (%s:%s)'
 127                          % (node['type'], node['level'], node['source'], line))
 128         self.system_message_level += 1
 129
 130     def depart_system_message(self, node):
 131         self.system_message_level -= 1
 132         self.body.append('@c --end system message--')