view hgext/fastannotate/formatter.py @ 41098:cfd95219102d

strip: move attributes shortcut assigned earlier

This series will add support for "soft" stripping using the archived phase in
addition to the usual heavy weight revlog stripping. First, we need to
refactor the strip function to extract logic common to the "soft-strip" case.

We are about to extract bits of the strip function into separate functions.
Those blocks of code contain variables for frequently accessed attributes. We
move those variables outside of the soon to be moved blocks.

# Copyright 2016-present Facebook. All Rights Reserved.
#
# format: defines the format used to output annotate result
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import absolute_import

from mercurial import (
    encoding,
    node,
    pycompat,
    templatefilters,
    util,
)
from mercurial.utils import (
        dateutil,
)

# imitating mercurial.commands.annotate, not using the vanilla formatter since
# the data structures are a bit different, and we have some fast paths.
class defaultformatter(object):
    """the default formatter that does leftpad and support some common flags"""

    def __init__(self, ui, repo, opts):
        self.ui = ui
        self.opts = opts

        if ui.quiet:
            datefunc = dateutil.shortdate
        else:
            datefunc = dateutil.datestr
        datefunc = util.cachefunc(datefunc)
        getctx = util.cachefunc(lambda x: repo[x[0]])
        hexfunc = self._hexfunc

        # special handling working copy "changeset" and "rev" functions
        if self.opts.get('rev') == 'wdir()':
            orig = hexfunc
            hexfunc = lambda x: None if x is None else orig(x)
            wnode = hexfunc(repo[None].p1().node()) + '+'
            wrev = '%d' % repo[None].p1().rev()
            wrevpad = ''
            if not opts.get('changeset'): # only show + if changeset is hidden
                wrev += '+'
                wrevpad = ' '
            revenc = lambda x: wrev if x is None else ('%d' % x) + wrevpad
            def csetenc(x):
                if x is None:
                    return wnode
                return pycompat.bytestr(x) + ' '
        else:
            revenc = csetenc = pycompat.bytestr

        # opt name, separator, raw value (for json/plain), encoder (for plain)
        opmap = [('user', ' ', lambda x: getctx(x).user(), ui.shortuser),
                 ('number', ' ', lambda x: getctx(x).rev(), revenc),
                 ('changeset', ' ', lambda x: hexfunc(x[0]), csetenc),
                 ('date', ' ', lambda x: getctx(x).date(), datefunc),
                 ('file', ' ', lambda x: x[2], pycompat.bytestr),
                 ('line_number', ':', lambda x: x[1] + 1, pycompat.bytestr)]
        fieldnamemap = {'number': 'rev', 'changeset': 'node'}
        funcmap = [(get, sep, fieldnamemap.get(op, op), enc)
                   for op, sep, get, enc in opmap
                   if opts.get(op)]
        # no separator for first column
        funcmap[0] = list(funcmap[0])
        funcmap[0][1] = ''
        self.funcmap = funcmap

    def write(self, annotatedresult, lines=None, existinglines=None):
        """(annotateresult, [str], set([rev, linenum])) -> None. write output.
        annotateresult can be [(node, linenum, path)], or [(node, linenum)]
        """
        pieces = [] # [[str]]
        maxwidths = [] # [int]

        # calculate padding
        for f, sep, name, enc in self.funcmap:
            l = [enc(f(x)) for x in annotatedresult]
            pieces.append(l)
            if name in ['node', 'date']: # node and date has fixed size
                l = l[:1]
            widths = pycompat.maplist(encoding.colwidth, set(l))
            maxwidth = (max(widths) if widths else 0)
            maxwidths.append(maxwidth)

        # buffered output
        result = ''
        for i in pycompat.xrange(len(annotatedresult)):
            for j, p in enumerate(pieces):
                sep = self.funcmap[j][1]
                padding = ' ' * (maxwidths[j] - len(p[i]))
                result += sep + padding + p[i]
            if lines:
                if existinglines is None:
                    result += ': ' + lines[i]
                else: # extra formatting showing whether a line exists
                    key = (annotatedresult[i][0], annotatedresult[i][1])
                    if key in existinglines:
                        result += ':  ' + lines[i]
                    else:
                        result += ': ' + self.ui.label('-' + lines[i],
                                                       'diff.deleted')

            if result[-1] != '\n':
                result += '\n'

        self.ui.write(result)

    @util.propertycache
    def _hexfunc(self):
        if self.ui.debugflag or self.opts.get('long_hash'):
            return node.hex
        else:
            return node.short

    def end(self):
        pass

class jsonformatter(defaultformatter):
    def __init__(self, ui, repo, opts):
        super(jsonformatter, self).__init__(ui, repo, opts)
        self.ui.write('[')
        self.needcomma = False

    def write(self, annotatedresult, lines=None, existinglines=None):
        if annotatedresult:
            self._writecomma()

        pieces = [(name, map(f, annotatedresult))
                  for f, sep, name, enc in self.funcmap]
        if lines is not None:
            pieces.append(('line', lines))
        pieces.sort()

        seps = [','] * len(pieces[:-1]) + ['']

        result = ''
        lasti = len(annotatedresult) - 1
        for i in pycompat.xrange(len(annotatedresult)):
            result += '\n {\n'
            for j, p in enumerate(pieces):
                k, vs = p
                result += ('  "%s": %s%s\n'
                           % (k, templatefilters.json(vs[i], paranoid=False),
                              seps[j]))
            result += ' }%s' % ('' if i == lasti else ',')
        if lasti >= 0:
            self.needcomma = True

        self.ui.write(result)

    def _writecomma(self):
        if self.needcomma:
            self.ui.write(',')
            self.needcomma = False

    @util.propertycache
    def _hexfunc(self):
        return node.hex

    def end(self):
        self.ui.write('\n]\n')