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# grep.py - logic for history walk and grep
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#
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# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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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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from __future__ import absolute_import
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import difflib
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from . import (
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pycompat,
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scmutil,
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util,
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)
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def matchlines(body, regexp):
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begin = 0
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linenum = 0
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while begin < len(body):
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match = regexp.search(body, begin)
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if not match:
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break
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mstart, mend = match.span()
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linenum += body.count(b'\n', begin, mstart) + 1
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lstart = body.rfind(b'\n', begin, mstart) + 1 or begin
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begin = body.find(b'\n', mend) + 1 or len(body) + 1
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lend = begin - 1
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yield linenum, mstart - lstart, mend - lstart, body[lstart:lend]
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class linestate(object):
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def __init__(self, line, linenum, colstart, colend):
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self.line = line
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self.linenum = linenum
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self.colstart = colstart
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self.colend = colend
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def __hash__(self):
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return hash(self.line)
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def __eq__(self, other):
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return self.line == other.line
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def findpos(self, regexp):
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"""Iterate all (start, end) indices of matches"""
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yield self.colstart, self.colend
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p = self.colend
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while p < len(self.line):
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m = regexp.search(self.line, p)
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if not m:
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break
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if m.end() == p:
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p += 1
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else:
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yield m.span()
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p = m.end()
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def difflinestates(a, b):
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sm = difflib.SequenceMatcher(None, a, b)
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for tag, alo, ahi, blo, bhi in sm.get_opcodes():
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if tag == 'insert':
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for i in pycompat.xrange(blo, bhi):
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yield (b'+', b[i])
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elif tag == 'delete':
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for i in pycompat.xrange(alo, ahi):
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yield (b'-', a[i])
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elif tag == 'replace':
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for i in pycompat.xrange(alo, ahi):
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yield (b'-', a[i])
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for i in pycompat.xrange(blo, bhi):
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yield (b'+', b[i])
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class grepsearcher(object):
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"""Search files and revisions for lines matching the given pattern"""
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def __init__(self, ui, repo, regexp):
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self._ui = ui
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self._repo = repo
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self._regexp = regexp
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self._getfile = util.lrucachefunc(repo.file)
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self._getrenamed = scmutil.getrenamedfn(repo)
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self._matches = {}
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self._copies = {}
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self._skip = set()
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self._revfiles = {}
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def _grepbody(self, fn, rev, body):
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self._matches[rev].setdefault(fn, [])
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m = self._matches[rev][fn]
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if body is None:
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return
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for lnum, cstart, cend, line in matchlines(body, self._regexp):
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s = linestate(line, lnum, cstart, cend)
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m.append(s)
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