mercurial/minirst.py
author Idan Kamara <idankk86@gmail.com>
Sun, 22 May 2011 16:10:02 +0300
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# minirst.py - minimal reStructuredText parser
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#
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# Copyright 2009, 2010 Matt Mackall <mpm@selenic.com> and others
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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"""simplified reStructuredText parser.
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This parser knows just enough about reStructuredText to parse the
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Mercurial docstrings.
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It cheats in a major way: nested blocks are not really nested. They
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are just indented blocks that look like they are nested. This relies
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on the user to keep the right indentation for the blocks.
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Remember to update http://mercurial.selenic.com/wiki/HelpStyleGuide
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when adding support for new constructs.
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"""
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import re, sys
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import util, encoding
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from i18n import _
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def replace(text, substs):
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    utext = text.decode(encoding.encoding)
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    for f, t in substs:
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        utext = utext.replace(f, t)
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    return utext.encode(encoding.encoding)
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_blockre = re.compile(r"\n(?:\s*\n)+")
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def findblocks(text):
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    """Find continuous blocks of lines in text.
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    Returns a list of dictionaries representing the blocks. Each block
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    has an 'indent' field and a 'lines' field.
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    """
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    blocks = []
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    for b in _blockre.split(text.strip()):
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        lines = b.splitlines()
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        indent = min((len(l) - len(l.lstrip())) for l in lines)
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        lines = [l[indent:] for l in lines]
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        blocks.append(dict(indent=indent, lines=lines))
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    return blocks
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def findliteralblocks(blocks):
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    """Finds literal blocks and adds a 'type' field to the blocks.
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    Literal blocks are given the type 'literal', all other blocks are
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    given type the 'paragraph'.
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    """
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    i = 0
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    while i < len(blocks):
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        # Searching for a block that looks like this:
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        #
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        # +------------------------------+
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        # | paragraph                    |
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        # | (ends with "::")             |
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        # +------------------------------+
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        #    +---------------------------+
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        #    | indented literal block    |
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        #    +---------------------------+
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        blocks[i]['type'] = 'paragraph'
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        if blocks[i]['lines'][-1].endswith('::') and i + 1 < len(blocks):
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            indent = blocks[i]['indent']
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            adjustment = blocks[i + 1]['indent'] - indent
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            if blocks[i]['lines'] == ['::']:
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                # Expanded form: remove block
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                del blocks[i]
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                i -= 1
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            elif blocks[i]['lines'][-1].endswith(' ::'):
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                # Partially minimized form: remove space and both
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                # colons.
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                blocks[i]['lines'][-1] = blocks[i]['lines'][-1][:-3]
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            else:
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                # Fully minimized form: remove just one colon.
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                blocks[i]['lines'][-1] = blocks[i]['lines'][-1][:-1]
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            # List items are formatted with a hanging indent. We must
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            # correct for this here while we still have the original
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            # information on the indentation of the subsequent literal
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            # blocks available.
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            m = _bulletre.match(blocks[i]['lines'][0])
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            if m:
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                indent += m.end()
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                adjustment -= m.end()
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            # Mark the following indented blocks.
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            while i + 1 < len(blocks) and blocks[i + 1]['indent'] > indent:
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                blocks[i + 1]['type'] = 'literal'
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                blocks[i + 1]['indent'] -= adjustment
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                i += 1
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        i += 1
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    return blocks
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_bulletre = re.compile(r'(-|[0-9A-Za-z]+\.|\(?[0-9A-Za-z]+\)|\|) ')
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_optionre = re.compile(r'^(-([a-zA-Z0-9]), )?(--[a-z0-9-]+)'
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                       r'((.*)  +)(.*)$')
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_fieldre = re.compile(r':(?![: ])([^:]*)(?<! ):[ ]+(.*)')
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_definitionre = re.compile(r'[^ ]')
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def splitparagraphs(blocks):
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    """Split paragraphs into lists."""
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    # Tuples with (list type, item regexp, single line items?). Order
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    # matters: definition lists has the least specific regexp and must
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    # come last.
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    listtypes = [('bullet', _bulletre, True),
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                 ('option', _optionre, True),
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                 ('field', _fieldre, True),
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                 ('definition', _definitionre, False)]
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    def match(lines, i, itemre, singleline):
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        """Does itemre match an item at line i?
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        A list item can be followed by an idented line or another list
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        item (but only if singleline is True).
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        """
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        line1 = lines[i]
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        line2 = i + 1 < len(lines) and lines[i + 1] or ''
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        if not itemre.match(line1):
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            return False
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        if singleline:
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            return line2 == '' or line2[0] == ' ' or itemre.match(line2)
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        else:
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            return line2.startswith(' ')
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    i = 0
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    while i < len(blocks):
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        if blocks[i]['type'] == 'paragraph':
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            lines = blocks[i]['lines']
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            for type, itemre, singleline in listtypes:
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                if match(lines, 0, itemre, singleline):
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   138
                    items = []
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                    for j, line in enumerate(lines):
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                        if match(lines, j, itemre, singleline):
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                            items.append(dict(type=type, lines=[],
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                                              indent=blocks[i]['indent']))
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                        items[-1]['lines'].append(line)
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                    blocks[i:i + 1] = items
9737
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                    break
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        i += 1
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    return blocks
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_fieldwidth = 12
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def updatefieldlists(blocks):
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    """Find key and maximum key width for field lists."""
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    i = 0
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    while i < len(blocks):
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        if blocks[i]['type'] != 'field':
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            i += 1
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            continue
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        keywidth = 0
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        j = i
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        while j < len(blocks) and blocks[j]['type'] == 'field':
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   163
            m = _fieldre.match(blocks[j]['lines'][0])
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   164
            key, rest = m.groups()
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            blocks[j]['lines'][0] = rest
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            blocks[j]['key'] = key
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            keywidth = max(keywidth, len(key))
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            j += 1
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   169
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        for block in blocks[i:j]:
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            block['keywidth'] = keywidth
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        i = j + 1
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    return blocks
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def updateoptionlists(blocks):
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    i = 0
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    while i < len(blocks):
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   180
        if blocks[i]['type'] != 'option':
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            i += 1
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   182
            continue
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   183
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        optstrwidth = 0
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   185
        j = i
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   186
        while j < len(blocks) and blocks[j]['type'] == 'option':
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   187
            m = _optionre.match(blocks[j]['lines'][0])
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   188
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   189
            shortoption = m.group(2)
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   190
            group3 = m.group(3)
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   191
            longoption = group3[2:].strip()
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   192
            desc = m.group(6).strip()
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   193
            longoptionarg = m.group(5).strip()
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   194
            blocks[j]['lines'][0] = desc
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   195
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   196
            noshortop = ''
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   197
            if not shortoption:
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   198
                noshortop = '   '
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   199
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   200
            opt = "%s%s" %   (shortoption and "-%s " % shortoption or '',
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   201
                            ("%s--%s %s") % (noshortop, longoption,
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   202
                                             longoptionarg))
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   203
            opt = opt.rstrip()
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   204
            blocks[j]['optstr'] = opt
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   205
            optstrwidth = max(optstrwidth, encoding.colwidth(opt))
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   206
            j += 1
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   207
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   208
        for block in blocks[i:j]:
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   209
            block['optstrwidth'] = optstrwidth
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   210
        i = j + 1
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   211
    return blocks
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diff changeset
   212
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   213
def prunecontainers(blocks, keep):
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   214
    """Prune unwanted containers.
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   215
62d484a81dfe minirst: support containers
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   216
    The blocks must have a 'type' field, i.e., they should have been
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   217
    run through findliteralblocks first.
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   218
    """
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   219
    pruned = []
10443
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   220
    i = 0
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diff changeset
   221
    while i + 1 < len(blocks):
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   222
        # Searching for a block that looks like this:
62d484a81dfe minirst: support containers
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   223
        #
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   224
        # +-------+---------------------------+
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   225
        # | ".. container ::" type            |
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   226
        # +---+                               |
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   227
        #     | blocks                        |
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   228
        #     +-------------------------------+
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   229
        if (blocks[i]['type'] == 'paragraph' and
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diff changeset
   230
            blocks[i]['lines'][0].startswith('.. container::')):
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diff changeset
   231
            indent = blocks[i]['indent']
62d484a81dfe minirst: support containers
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diff changeset
   232
            adjustment = blocks[i + 1]['indent'] - indent
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diff changeset
   233
            containertype = blocks[i]['lines'][0][15:]
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   234
            prune = containertype not in keep
10444
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diff changeset
   235
            if prune:
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diff changeset
   236
                pruned.append(containertype)
10443
62d484a81dfe minirst: support containers
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diff changeset
   237
62d484a81dfe minirst: support containers
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diff changeset
   238
            # Always delete "..container:: type" block
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diff changeset
   239
            del blocks[i]
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diff changeset
   240
            j = i
62d484a81dfe minirst: support containers
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parents: 10282
diff changeset
   241
            while j < len(blocks) and blocks[j]['indent'] > indent:
62d484a81dfe minirst: support containers
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diff changeset
   242
                if prune:
62d484a81dfe minirst: support containers
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diff changeset
   243
                    del blocks[j]
62d484a81dfe minirst: support containers
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diff changeset
   244
                    i -= 1 # adjust outer index
62d484a81dfe minirst: support containers
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parents: 10282
diff changeset
   245
                else:
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parents: 10282
diff changeset
   246
                    blocks[j]['indent'] -= adjustment
62d484a81dfe minirst: support containers
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parents: 10282
diff changeset
   247
                    j += 1
62d484a81dfe minirst: support containers
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diff changeset
   248
        i += 1
10444
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diff changeset
   249
    return blocks, pruned
10443
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diff changeset
   250
62d484a81dfe minirst: support containers
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diff changeset
   251
10984
68b7d2d668ce minirst: support all recommended title adornments
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parents: 10983
diff changeset
   252
_sectionre = re.compile(r"""^([-=`:.'"~^_*+#])\1+$""")
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diff changeset
   253
9156
c9c7e8cdac9c minimal reStructuredText parser
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parents:
diff changeset
   254
def findsections(blocks):
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parents:
diff changeset
   255
    """Finds sections.
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parents:
diff changeset
   256
c9c7e8cdac9c minimal reStructuredText parser
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parents:
diff changeset
   257
    The blocks must have a 'type' field, i.e., they should have been
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parents:
diff changeset
   258
    run through findliteralblocks first.
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parents:
diff changeset
   259
    """
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parents:
diff changeset
   260
    for block in blocks:
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parents:
diff changeset
   261
        # Searching for a block that looks like this:
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parents:
diff changeset
   262
        #
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parents:
diff changeset
   263
        # +------------------------------+
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parents:
diff changeset
   264
        # | Section title                |
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parents:
diff changeset
   265
        # | -------------                |
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parents:
diff changeset
   266
        # +------------------------------+
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parents:
diff changeset
   267
        if (block['type'] == 'paragraph' and
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parents:
diff changeset
   268
            len(block['lines']) == 2 and
12867
eda77c3e246a minirst: use colwidth to match title lengths (issue2455)
Matt Mackall <mpm@selenic.com>
parents: 12819
diff changeset
   269
            encoding.colwidth(block['lines'][0]) == len(block['lines'][1]) and
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parents: 10983
diff changeset
   270
            _sectionre.match(block['lines'][1])):
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287a5cdf7743 minirst: correctly format sections containing inline markup
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diff changeset
   271
            block['underline'] = block['lines'][1][0]
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   272
            block['type'] = 'section'
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   273
            del block['lines'][1]
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   274
    return blocks
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   275
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parents:
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   276
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32727ce029de minirst: convert ``foo`` into "foo" upon display
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   277
def inlineliterals(blocks):
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   278
    substs = [('``', '"')]
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   279
    for b in blocks:
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   280
        if b['type'] in ('paragraph', 'section'):
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   281
            b['lines'] = [replace(l, substs) for l in b['lines']]
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   282
    return blocks
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   284
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   285
def hgrole(blocks):
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   286
    substs = [(':hg:`', '"hg '), ('`', '"')]
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   287
    for b in blocks:
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diff changeset
   288
        if b['type'] in ('paragraph', 'section'):
11192
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diff changeset
   289
            # Turn :hg:`command` into "hg command". This also works
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diff changeset
   290
            # when there is a line break in the command and relies on
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diff changeset
   291
            # the fact that we have no stray back-quotes in the input
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diff changeset
   292
            # (run the blocks through inlineliterals first).
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diff changeset
   293
            b['lines'] = [replace(l, substs) for l in b['lines']]
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diff changeset
   294
    return blocks
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   296
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   297
def addmargins(blocks):
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   298
    """Adds empty blocks for vertical spacing.
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    This groups bullets, options, and definitions together with no vertical
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   301
    space between them, and adds an empty block between all other blocks.
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   302
    """
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   303
    i = 1
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diff changeset
   304
    while i < len(blocks):
10282
08a0f04b56bd many, many trivial check-code fixups
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parents: 10264
diff changeset
   305
        if (blocks[i]['type'] == blocks[i - 1]['type'] and
10936
2853c891ac41 minirst: add margin around definition items
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parents: 10447
diff changeset
   306
            blocks[i]['type'] in ('bullet', 'option', 'field')):
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   307
            i += 1
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   308
        else:
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   309
            blocks.insert(i, dict(lines=[''], indent=0, type='margin'))
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   310
            i += 2
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diff changeset
   311
    return blocks
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   312
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   313
def prunecomments(blocks):
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diff changeset
   314
    """Remove comments."""
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diff changeset
   315
    i = 0
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diff changeset
   316
    while i < len(blocks):
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diff changeset
   317
        b = blocks[i]
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54be08fa4d1d minirst: modified minirst to also recognize empty comments.
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parents: 13003
diff changeset
   318
        if b['type'] == 'paragraph' and (b['lines'][0].startswith('.. ') or
54be08fa4d1d minirst: modified minirst to also recognize empty comments.
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parents: 13003
diff changeset
   319
                                         b['lines'] == ['..']):
12819
5082e2f3f8e0 minirst: ignore comments
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parents: 12652
diff changeset
   320
            del blocks[i]
13003
876a931dd230 minirst: better interaction between comments and margins
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parents: 12958
diff changeset
   321
            if i < len(blocks) and blocks[i]['type'] == 'margin':
876a931dd230 minirst: better interaction between comments and margins
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parents: 12958
diff changeset
   322
                del blocks[i]
12819
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diff changeset
   323
        else:
5082e2f3f8e0 minirst: ignore comments
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diff changeset
   324
            i += 1
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diff changeset
   325
    return blocks
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parents: 12652
diff changeset
   326
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9a9312e84e4e minirst: small code cleanup
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diff changeset
   327
_admonitionre = re.compile(r"\.\. (admonition|attention|caution|danger|"
9a9312e84e4e minirst: small code cleanup
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parents: 12388
diff changeset
   328
                           r"error|hint|important|note|tip|warning)::",
9a9312e84e4e minirst: small code cleanup
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parents: 12388
diff changeset
   329
                           flags=re.IGNORECASE)
9a9312e84e4e minirst: small code cleanup
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parents: 12388
diff changeset
   330
12388
75f044d4dbf5 minirst: Support for admonitions
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diff changeset
   331
def findadmonitions(blocks):
75f044d4dbf5 minirst: Support for admonitions
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parents: 11464
diff changeset
   332
    """
75f044d4dbf5 minirst: Support for admonitions
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parents: 11464
diff changeset
   333
    Makes the type of the block an admonition block if
75f044d4dbf5 minirst: Support for admonitions
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parents: 11464
diff changeset
   334
    the first line is an admonition directive
75f044d4dbf5 minirst: Support for admonitions
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parents: 11464
diff changeset
   335
    """
75f044d4dbf5 minirst: Support for admonitions
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parents: 11464
diff changeset
   336
    i = 0
75f044d4dbf5 minirst: Support for admonitions
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parents: 11464
diff changeset
   337
    while i < len(blocks):
12620
9a9312e84e4e minirst: small code cleanup
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parents: 12388
diff changeset
   338
        m = _admonitionre.match(blocks[i]['lines'][0])
12388
75f044d4dbf5 minirst: Support for admonitions
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parents: 11464
diff changeset
   339
        if m:
75f044d4dbf5 minirst: Support for admonitions
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diff changeset
   340
            blocks[i]['type'] = 'admonition'
75f044d4dbf5 minirst: Support for admonitions
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diff changeset
   341
            admonitiontitle = blocks[i]['lines'][0][3:m.end() - 2].lower()
75f044d4dbf5 minirst: Support for admonitions
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diff changeset
   342
75f044d4dbf5 minirst: Support for admonitions
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parents: 11464
diff changeset
   343
            firstline = blocks[i]['lines'][0][m.end() + 1:]
12620
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diff changeset
   344
            if firstline:
9a9312e84e4e minirst: small code cleanup
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parents: 12388
diff changeset
   345
                blocks[i]['lines'].insert(1, '   ' + firstline)
12388
75f044d4dbf5 minirst: Support for admonitions
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diff changeset
   346
75f044d4dbf5 minirst: Support for admonitions
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diff changeset
   347
            blocks[i]['admonitiontitle'] = admonitiontitle
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diff changeset
   348
            del blocks[i]['lines'][0]
75f044d4dbf5 minirst: Support for admonitions
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diff changeset
   349
        i = i + 1
75f044d4dbf5 minirst: Support for admonitions
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diff changeset
   350
    return blocks
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diff changeset
   351
12652
3c31c0e42b11 minirst: pull admonition titles out formatblock function
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parents: 12651
diff changeset
   352
_admonitiontitles = {'attention': _('Attention:'),
3c31c0e42b11 minirst: pull admonition titles out formatblock function
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parents: 12651
diff changeset
   353
                     'caution': _('Caution:'),
3c31c0e42b11 minirst: pull admonition titles out formatblock function
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parents: 12651
diff changeset
   354
                     'danger': _('!Danger!')  ,
3c31c0e42b11 minirst: pull admonition titles out formatblock function
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parents: 12651
diff changeset
   355
                     'error': _('Error:'),
3c31c0e42b11 minirst: pull admonition titles out formatblock function
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parents: 12651
diff changeset
   356
                     'hint': _('Hint:'),
3c31c0e42b11 minirst: pull admonition titles out formatblock function
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parents: 12651
diff changeset
   357
                     'important': _('Important:'),
3c31c0e42b11 minirst: pull admonition titles out formatblock function
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parents: 12651
diff changeset
   358
                     'note': _('Note:'),
3c31c0e42b11 minirst: pull admonition titles out formatblock function
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parents: 12651
diff changeset
   359
                     'tip': _('Tip:'),
3c31c0e42b11 minirst: pull admonition titles out formatblock function
Martin Geisler <mg@lazybytes.net>
parents: 12651
diff changeset
   360
                     'warning': _('Warning!')}
3c31c0e42b11 minirst: pull admonition titles out formatblock function
Martin Geisler <mg@lazybytes.net>
parents: 12651
diff changeset
   361
13011
4936a04b6792 minirst: improved support for option lists.
Erik Zielke <ez@aragost.com>
parents: 13009
diff changeset
   362
def formatoption(block, width):
4936a04b6792 minirst: improved support for option lists.
Erik Zielke <ez@aragost.com>
parents: 13009
diff changeset
   363
    desc = ' '.join(map(str.strip, block['lines']))
4936a04b6792 minirst: improved support for option lists.
Erik Zielke <ez@aragost.com>
parents: 13009
diff changeset
   364
    colwidth = encoding.colwidth(block['optstr'])
4936a04b6792 minirst: improved support for option lists.
Erik Zielke <ez@aragost.com>
parents: 13009
diff changeset
   365
    usablewidth = width - 1
4936a04b6792 minirst: improved support for option lists.
Erik Zielke <ez@aragost.com>
parents: 13009
diff changeset
   366
    hanging = block['optstrwidth']
4936a04b6792 minirst: improved support for option lists.
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parents: 13009
diff changeset
   367
    initindent = '%s%s  ' % (block['optstr'], ' ' * ((hanging - colwidth)))
4936a04b6792 minirst: improved support for option lists.
Erik Zielke <ez@aragost.com>
parents: 13009
diff changeset
   368
    hangindent = ' ' * (encoding.colwidth(initindent) + 1)
4936a04b6792 minirst: improved support for option lists.
Erik Zielke <ez@aragost.com>
parents: 13009
diff changeset
   369
    return ' %s' % (util.wrap(desc, usablewidth,
4936a04b6792 minirst: improved support for option lists.
Erik Zielke <ez@aragost.com>
parents: 13009
diff changeset
   370
                                           initindent=initindent,
4936a04b6792 minirst: improved support for option lists.
Erik Zielke <ez@aragost.com>
parents: 13009
diff changeset
   371
                                           hangindent=hangindent))
4936a04b6792 minirst: improved support for option lists.
Erik Zielke <ez@aragost.com>
parents: 13009
diff changeset
   372
9156
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   373
def formatblock(block, width):
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   374
    """Format a block according to width."""
9417
4c3fb45123e5 util, minirst: do not crash with COLUMNS=0
Martin Geisler <mg@lazybytes.net>
parents: 9293
diff changeset
   375
    if width <= 0:
4c3fb45123e5 util, minirst: do not crash with COLUMNS=0
Martin Geisler <mg@lazybytes.net>
parents: 9293
diff changeset
   376
        width = 78
9156
c9c7e8cdac9c minimal reStructuredText parser
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parents:
diff changeset
   377
    indent = ' ' * block['indent']
12388
75f044d4dbf5 minirst: Support for admonitions
Erik Zielke <ez@aragost.com>
parents: 11464
diff changeset
   378
    if block['type'] == 'admonition':
12652
3c31c0e42b11 minirst: pull admonition titles out formatblock function
Martin Geisler <mg@lazybytes.net>
parents: 12651
diff changeset
   379
        admonition = _admonitiontitles[block['admonitiontitle']]
12388
75f044d4dbf5 minirst: Support for admonitions
Erik Zielke <ez@aragost.com>
parents: 11464
diff changeset
   380
        hang = len(block['lines'][-1]) - len(block['lines'][-1].lstrip())
75f044d4dbf5 minirst: Support for admonitions
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parents: 11464
diff changeset
   381
75f044d4dbf5 minirst: Support for admonitions
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parents: 11464
diff changeset
   382
        defindent = indent + hang * ' '
75f044d4dbf5 minirst: Support for admonitions
Erik Zielke <ez@aragost.com>
parents: 11464
diff changeset
   383
        text = ' '.join(map(str.strip, block['lines']))
75f044d4dbf5 minirst: Support for admonitions
Erik Zielke <ez@aragost.com>
parents: 11464
diff changeset
   384
        return '%s\n%s' % (indent + admonition, util.wrap(text, width=width,
75f044d4dbf5 minirst: Support for admonitions
Erik Zielke <ez@aragost.com>
parents: 11464
diff changeset
   385
                                           initindent=defindent,
75f044d4dbf5 minirst: Support for admonitions
Erik Zielke <ez@aragost.com>
parents: 11464
diff changeset
   386
                                           hangindent=defindent))
9156
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   387
    if block['type'] == 'margin':
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   388
        return ''
9735
97d0d910fa5d minirst: remove unnecessary "elif:" statements
Martin Geisler <mg@lazybytes.net>
parents: 9623
diff changeset
   389
    if block['type'] == 'literal':
9291
cd5b6a11b607 minirst: indent literal blocks with two spaces
Martin Geisler <mg@lazybytes.net>
parents: 9156
diff changeset
   390
        indent += '  '
cd5b6a11b607 minirst: indent literal blocks with two spaces
Martin Geisler <mg@lazybytes.net>
parents: 9156
diff changeset
   391
        return indent + ('\n' + indent).join(block['lines'])
9735
97d0d910fa5d minirst: remove unnecessary "elif:" statements
Martin Geisler <mg@lazybytes.net>
parents: 9623
diff changeset
   392
    if block['type'] == 'section':
12867
eda77c3e246a minirst: use colwidth to match title lengths (issue2455)
Matt Mackall <mpm@selenic.com>
parents: 12819
diff changeset
   393
        underline = encoding.colwidth(block['lines'][0]) * block['underline']
10983
287a5cdf7743 minirst: correctly format sections containing inline markup
Martin Geisler <mg@lazybytes.net>
parents: 10972
diff changeset
   394
        return "%s%s\n%s%s" % (indent, block['lines'][0],indent, underline)
9735
97d0d910fa5d minirst: remove unnecessary "elif:" statements
Martin Geisler <mg@lazybytes.net>
parents: 9623
diff changeset
   395
    if block['type'] == 'definition':
9156
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   396
        term = indent + block['lines'][0]
9737
5f101af4a921 minirst: combine list parsing in one function
Martin Geisler <mg@lazybytes.net>
parents: 9735
diff changeset
   397
        hang = len(block['lines'][-1]) - len(block['lines'][-1].lstrip())
5f101af4a921 minirst: combine list parsing in one function
Martin Geisler <mg@lazybytes.net>
parents: 9735
diff changeset
   398
        defindent = indent + hang * ' '
9156
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   399
        text = ' '.join(map(str.strip, block['lines'][1:]))
11297
d320e70442a5 replace Python standard textwrap by MBCS sensitive one for i18n text
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 11192
diff changeset
   400
        return '%s\n%s' % (term, util.wrap(text, width=width,
d320e70442a5 replace Python standard textwrap by MBCS sensitive one for i18n text
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 11192
diff changeset
   401
                                           initindent=defindent,
d320e70442a5 replace Python standard textwrap by MBCS sensitive one for i18n text
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 11192
diff changeset
   402
                                           hangindent=defindent))
10937
a9d5943d2a30 minirst: removed unnecessary initindent variable
Martin Geisler <mg@lazybytes.net>
parents: 10936
diff changeset
   403
    subindent = indent
9735
97d0d910fa5d minirst: remove unnecessary "elif:" statements
Martin Geisler <mg@lazybytes.net>
parents: 9623
diff changeset
   404
    if block['type'] == 'bullet':
10447
e957cc7cbd14 minirst: support line blocks
Martin Geisler <mg@lazybytes.net>
parents: 10444
diff changeset
   405
        if block['lines'][0].startswith('| '):
e957cc7cbd14 minirst: support line blocks
Martin Geisler <mg@lazybytes.net>
parents: 10444
diff changeset
   406
            # Remove bullet for line blocks and add no extra
e957cc7cbd14 minirst: support line blocks
Martin Geisler <mg@lazybytes.net>
parents: 10444
diff changeset
   407
            # indention.
e957cc7cbd14 minirst: support line blocks
Martin Geisler <mg@lazybytes.net>
parents: 10444
diff changeset
   408
            block['lines'][0] = block['lines'][0][2:]
e957cc7cbd14 minirst: support line blocks
Martin Geisler <mg@lazybytes.net>
parents: 10444
diff changeset
   409
        else:
e957cc7cbd14 minirst: support line blocks
Martin Geisler <mg@lazybytes.net>
parents: 10444
diff changeset
   410
            m = _bulletre.match(block['lines'][0])
e957cc7cbd14 minirst: support line blocks
Martin Geisler <mg@lazybytes.net>
parents: 10444
diff changeset
   411
            subindent = indent + m.end() * ' '
9737
5f101af4a921 minirst: combine list parsing in one function
Martin Geisler <mg@lazybytes.net>
parents: 9735
diff changeset
   412
    elif block['type'] == 'field':
10065
a1ae0ed78d1a minirst: improve layout of field lists
Martin Geisler <mg@lazybytes.net>
parents: 10064
diff changeset
   413
        keywidth = block['keywidth']
a1ae0ed78d1a minirst: improve layout of field lists
Martin Geisler <mg@lazybytes.net>
parents: 10064
diff changeset
   414
        key = block['key']
a1ae0ed78d1a minirst: improve layout of field lists
Martin Geisler <mg@lazybytes.net>
parents: 10064
diff changeset
   415
a1ae0ed78d1a minirst: improve layout of field lists
Martin Geisler <mg@lazybytes.net>
parents: 10064
diff changeset
   416
        subindent = indent + _fieldwidth * ' '
a1ae0ed78d1a minirst: improve layout of field lists
Martin Geisler <mg@lazybytes.net>
parents: 10064
diff changeset
   417
        if len(key) + 2 > _fieldwidth:
a1ae0ed78d1a minirst: improve layout of field lists
Martin Geisler <mg@lazybytes.net>
parents: 10064
diff changeset
   418
            # key too large, use full line width
a1ae0ed78d1a minirst: improve layout of field lists
Martin Geisler <mg@lazybytes.net>
parents: 10064
diff changeset
   419
            key = key.ljust(width)
a1ae0ed78d1a minirst: improve layout of field lists
Martin Geisler <mg@lazybytes.net>
parents: 10064
diff changeset
   420
        elif keywidth + 2 < _fieldwidth:
a1ae0ed78d1a minirst: improve layout of field lists
Martin Geisler <mg@lazybytes.net>
parents: 10064
diff changeset
   421
            # all keys are small, add only two spaces
a1ae0ed78d1a minirst: improve layout of field lists
Martin Geisler <mg@lazybytes.net>
parents: 10064
diff changeset
   422
            key = key.ljust(keywidth + 2)
a1ae0ed78d1a minirst: improve layout of field lists
Martin Geisler <mg@lazybytes.net>
parents: 10064
diff changeset
   423
            subindent = indent + (keywidth + 2) * ' '
a1ae0ed78d1a minirst: improve layout of field lists
Martin Geisler <mg@lazybytes.net>
parents: 10064
diff changeset
   424
        else:
a1ae0ed78d1a minirst: improve layout of field lists
Martin Geisler <mg@lazybytes.net>
parents: 10064
diff changeset
   425
            # mixed sizes, use fieldwidth for this one
a1ae0ed78d1a minirst: improve layout of field lists
Martin Geisler <mg@lazybytes.net>
parents: 10064
diff changeset
   426
            key = key.ljust(_fieldwidth)
a1ae0ed78d1a minirst: improve layout of field lists
Martin Geisler <mg@lazybytes.net>
parents: 10064
diff changeset
   427
        block['lines'][0] = key + block['lines'][0]
9737
5f101af4a921 minirst: combine list parsing in one function
Martin Geisler <mg@lazybytes.net>
parents: 9735
diff changeset
   428
    elif block['type'] == 'option':
13011
4936a04b6792 minirst: improved support for option lists.
Erik Zielke <ez@aragost.com>
parents: 13009
diff changeset
   429
        return formatoption(block, width)
9156
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   430
9737
5f101af4a921 minirst: combine list parsing in one function
Martin Geisler <mg@lazybytes.net>
parents: 9735
diff changeset
   431
    text = ' '.join(map(str.strip, block['lines']))
11297
d320e70442a5 replace Python standard textwrap by MBCS sensitive one for i18n text
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 11192
diff changeset
   432
    return util.wrap(text, width=width,
d320e70442a5 replace Python standard textwrap by MBCS sensitive one for i18n text
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 11192
diff changeset
   433
                     initindent=indent,
d320e70442a5 replace Python standard textwrap by MBCS sensitive one for i18n text
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 11192
diff changeset
   434
                     hangindent=subindent)
9156
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   435
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   436
10444
e99e0e077bc4 minirst: report pruned container types
Martin Geisler <mg@lazybytes.net>
parents: 10443
diff changeset
   437
def format(text, width, indent=0, keep=None):
9156
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   438
    """Parse and format the text according to width."""
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   439
    blocks = findblocks(text)
9540
cad36e496640 help: un-indent help topics
Martin Geisler <mg@lazybytes.net>
parents: 9417
diff changeset
   440
    for b in blocks:
cad36e496640 help: un-indent help topics
Martin Geisler <mg@lazybytes.net>
parents: 9417
diff changeset
   441
        b['indent'] += indent
9156
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   442
    blocks = findliteralblocks(blocks)
10444
e99e0e077bc4 minirst: report pruned container types
Martin Geisler <mg@lazybytes.net>
parents: 10443
diff changeset
   443
    blocks, pruned = prunecontainers(blocks, keep or [])
10983
287a5cdf7743 minirst: correctly format sections containing inline markup
Martin Geisler <mg@lazybytes.net>
parents: 10972
diff changeset
   444
    blocks = findsections(blocks)
9623
32727ce029de minirst: convert ``foo`` into "foo" upon display
Martin Geisler <mg@lazybytes.net>
parents: 9540
diff changeset
   445
    blocks = inlineliterals(blocks)
10972
0a2c6948f5f4 doc, minirst: support hg interpreted text role
Martin Geisler <mg@aragost.com>
parents: 10937
diff changeset
   446
    blocks = hgrole(blocks)
9737
5f101af4a921 minirst: combine list parsing in one function
Martin Geisler <mg@lazybytes.net>
parents: 9735
diff changeset
   447
    blocks = splitparagraphs(blocks)
10065
a1ae0ed78d1a minirst: improve layout of field lists
Martin Geisler <mg@lazybytes.net>
parents: 10064
diff changeset
   448
    blocks = updatefieldlists(blocks)
13011
4936a04b6792 minirst: improved support for option lists.
Erik Zielke <ez@aragost.com>
parents: 13009
diff changeset
   449
    blocks = updateoptionlists(blocks)
13003
876a931dd230 minirst: better interaction between comments and margins
Martin Geisler <mg@aragost.com>
parents: 12958
diff changeset
   450
    blocks = addmargins(blocks)
12819
5082e2f3f8e0 minirst: ignore comments
Martin Geisler <mg@lazybytes.net>
parents: 12652
diff changeset
   451
    blocks = prunecomments(blocks)
12388
75f044d4dbf5 minirst: Support for admonitions
Erik Zielke <ez@aragost.com>
parents: 11464
diff changeset
   452
    blocks = findadmonitions(blocks)
10444
e99e0e077bc4 minirst: report pruned container types
Martin Geisler <mg@lazybytes.net>
parents: 10443
diff changeset
   453
    text = '\n'.join(formatblock(b, width) for b in blocks)
e99e0e077bc4 minirst: report pruned container types
Martin Geisler <mg@lazybytes.net>
parents: 10443
diff changeset
   454
    if keep is None:
e99e0e077bc4 minirst: report pruned container types
Martin Geisler <mg@lazybytes.net>
parents: 10443
diff changeset
   455
        return text
e99e0e077bc4 minirst: report pruned container types
Martin Geisler <mg@lazybytes.net>
parents: 10443
diff changeset
   456
    else:
e99e0e077bc4 minirst: report pruned container types
Martin Geisler <mg@lazybytes.net>
parents: 10443
diff changeset
   457
        return text, pruned
9156
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   458
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   459
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   460
if __name__ == "__main__":
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   461
    from pprint import pprint
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   462
10443
62d484a81dfe minirst: support containers
Martin Geisler <mg@lazybytes.net>
parents: 10282
diff changeset
   463
    def debug(func, *args):
62d484a81dfe minirst: support containers
Martin Geisler <mg@lazybytes.net>
parents: 10282
diff changeset
   464
        blocks = func(*args)
9156
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   465
        print "*** after %s:" % func.__name__
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   466
        pprint(blocks)
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   467
        print
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   468
        return blocks
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   469
14168
135e244776f0 prevent transient leaks of file handle by using new helper functions
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 13011
diff changeset
   470
    text = util.readfile(sys.argv[1])
9156
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   471
    blocks = debug(findblocks, text)
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   472
    blocks = debug(findliteralblocks, blocks)
11187
db2897926d14 minirst: fix debug code
Martin Geisler <mg@lazybytes.net>
parents: 10447
diff changeset
   473
    blocks, pruned = debug(prunecontainers, blocks, sys.argv[2:])
10063
a46478b80ea3 minirst: run inlineliterals too in debug mode
Martin Geisler <mg@lazybytes.net>
parents: 9741
diff changeset
   474
    blocks = debug(inlineliterals, blocks)
9737
5f101af4a921 minirst: combine list parsing in one function
Martin Geisler <mg@lazybytes.net>
parents: 9735
diff changeset
   475
    blocks = debug(splitparagraphs, blocks)
10065
a1ae0ed78d1a minirst: improve layout of field lists
Martin Geisler <mg@lazybytes.net>
parents: 10064
diff changeset
   476
    blocks = debug(updatefieldlists, blocks)
13011
4936a04b6792 minirst: improved support for option lists.
Erik Zielke <ez@aragost.com>
parents: 13009
diff changeset
   477
    blocks = debug(updateoptionlists, blocks)
9156
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   478
    blocks = debug(findsections, blocks)
13003
876a931dd230 minirst: better interaction between comments and margins
Martin Geisler <mg@aragost.com>
parents: 12958
diff changeset
   479
    blocks = debug(addmargins, blocks)
12819
5082e2f3f8e0 minirst: ignore comments
Martin Geisler <mg@lazybytes.net>
parents: 12652
diff changeset
   480
    blocks = debug(prunecomments, blocks)
12388
75f044d4dbf5 minirst: Support for admonitions
Erik Zielke <ez@aragost.com>
parents: 11464
diff changeset
   481
    blocks = debug(findadmonitions, blocks)
9156
c9c7e8cdac9c minimal reStructuredText parser
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
   482
    print '\n'.join(formatblock(b, 30) for b in blocks)