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# Copyright (C) 2004, 2005 Aaron Bentley
# <aaron.bentley@utoronto.ca>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import sys
import progress
class PatchSyntax(Exception):
def __init__(self, msg):
Exception.__init__(self, msg)
class MalformedPatchHeader(PatchSyntax):
def __init__(self, desc, line):
self.desc = desc
self.line = line
msg = "Malformed patch header. %s\n%s" % (self.desc, self.line)
PatchSyntax.__init__(self, msg)
class MalformedHunkHeader(PatchSyntax):
def __init__(self, desc, line):
self.desc = desc
self.line = line
msg = "Malformed hunk header. %s\n%s" % (self.desc, self.line)
PatchSyntax.__init__(self, msg)
class MalformedLine(PatchSyntax):
def __init__(self, desc, line):
self.desc = desc
self.line = line
msg = "Malformed line. %s\n%s" % (self.desc, self.line)
PatchSyntax.__init__(self, msg)
def get_patch_names(iter_lines):
try:
line = iter_lines.next()
if not line.startswith("--- "):
raise MalformedPatchHeader("No orig name", line)
else:
orig_name = line[4:].rstrip("\n")
except StopIteration:
raise MalformedPatchHeader("No orig line", "")
try:
line = iter_lines.next()
if not line.startswith("+++ "):
raise PatchSyntax("No mod name")
else:
mod_name = line[4:].rstrip("\n")
except StopIteration:
raise MalformedPatchHeader("No mod line", "")
return (orig_name, mod_name)
def parse_range(textrange):
"""Parse a patch range, handling the "1" special-case
:param textrange: The text to parse
:type textrange: str
:return: the position and range, as a tuple
:rtype: (int, int)
"""
tmp = textrange.split(',')
if len(tmp) == 1:
pos = tmp[0]
range = "1"
else:
(pos, range) = tmp
pos = int(pos)
range = int(range)
return (pos, range)
def hunk_from_header(line):
if not line.startswith("@@") or not line.endswith("@@\n") \
or not len(line) > 4:
raise MalformedHunkHeader("Does not start and end with @@.", line)
try:
(orig, mod) = line[3:-4].split(" ")
except Exception, e:
raise MalformedHunkHeader(str(e), line)
if not orig.startswith('-') or not mod.startswith('+'):
raise MalformedHunkHeader("Positions don't start with + or -.", line)
try:
(orig_pos, orig_range) = parse_range(orig[1:])
(mod_pos, mod_range) = parse_range(mod[1:])
except Exception, e:
raise MalformedHunkHeader(str(e), line)
if mod_range < 0 or orig_range < 0:
raise MalformedHunkHeader("Hunk range is negative", line)
return Hunk(orig_pos, orig_range, mod_pos, mod_range)
class HunkLine:
def __init__(self, contents):
self.contents = contents
def get_str(self, leadchar):
if self.contents == "\n" and leadchar == " " and False:
return "\n"
return leadchar + self.contents
class ContextLine(HunkLine):
def __init__(self, contents):
HunkLine.__init__(self, contents)
def __str__(self):
return self.get_str(" ")
class InsertLine(HunkLine):
def __init__(self, contents):
HunkLine.__init__(self, contents)
def __str__(self):
return self.get_str("+")
class RemoveLine(HunkLine):
def __init__(self, contents):
HunkLine.__init__(self, contents)
def __str__(self):
return self.get_str("-")
__pychecker__="no-returnvalues"
def parse_line(line):
if line.startswith("\n"):
return ContextLine(line)
elif line.startswith(" "):
return ContextLine(line[1:])
elif line.startswith("+"):
return InsertLine(line[1:])
elif line.startswith("-"):
return RemoveLine(line[1:])
else:
raise MalformedLine("Unknown line type", line)
__pychecker__=""
class Hunk:
def __init__(self, orig_pos, orig_range, mod_pos, mod_range):
self.orig_pos = orig_pos
self.orig_range = orig_range
self.mod_pos = mod_pos
self.mod_range = mod_range
self.lines = []
def get_header(self):
return "@@ -%s +%s @@\n" % (self.range_str(self.orig_pos,
self.orig_range),
self.range_str(self.mod_pos,
self.mod_range))
def range_str(self, pos, range):
"""Return a file range, special-casing for 1-line files.
:param pos: The position in the file
:type pos: int
:range: The range in the file
:type range: int
:return: a string in the format 1,4 except when range == pos == 1
"""
if range == 1:
return "%i" % pos
else:
return "%i,%i" % (pos, range)
def __str__(self):
lines = [self.get_header()]
for line in self.lines:
lines.append(str(line))
return "".join(lines)
def shift_to_mod(self, pos):
if pos < self.orig_pos-1:
return 0
elif pos > self.orig_pos+self.orig_range:
return self.mod_range - self.orig_range
else:
return self.shift_to_mod_lines(pos)
def shift_to_mod_lines(self, pos):
assert (pos >= self.orig_pos-1 and pos <= self.orig_pos+self.orig_range)
position = self.orig_pos-1
shift = 0
for line in self.lines:
if isinstance(line, InsertLine):
shift += 1
elif isinstance(line, RemoveLine):
if position == pos:
return None
shift -= 1
position += 1
elif isinstance(line, ContextLine):
position += 1
if position > pos:
break
return shift
def iter_hunks(iter_lines):
hunk = None
for line in iter_lines:
if line.startswith("@@"):
if hunk is not None:
yield hunk
hunk = hunk_from_header(line)
else:
hunk.lines.append(parse_line(line))
if hunk is not None:
yield hunk
class Patch:
def __init__(self, oldname, newname):
self.oldname = oldname
self.newname = newname
self.hunks = []
def __str__(self):
ret = "--- %s\n+++ %s\n" % (self.oldname, self.newname)
ret += "".join([str(h) for h in self.hunks])
return ret
def stats_str(self):
"""Return a string of patch statistics"""
removes = 0
inserts = 0
for hunk in self.hunks:
for line in hunk.lines:
if isinstance(line, InsertLine):
inserts+=1;
elif isinstance(line, RemoveLine):
removes+=1;
return "%i inserts, %i removes in %i hunks" % \
(inserts, removes, len(self.hunks))
def pos_in_mod(self, position):
newpos = position
for hunk in self.hunks:
shift = hunk.shift_to_mod(position)
if shift is None:
return None
newpos += shift
return newpos
def iter_inserted(self):
"""Iteraties through inserted lines
:return: Pair of line number, line
:rtype: iterator of (int, InsertLine)
"""
for hunk in self.hunks:
pos = hunk.mod_pos - 1;
for line in hunk.lines:
if isinstance(line, InsertLine):
yield (pos, line)
pos += 1
if isinstance(line, ContextLine):
pos += 1
def parse_patch(iter_lines):
(orig_name, mod_name) = get_patch_names(iter_lines)
patch = Patch(orig_name, mod_name)
for hunk in iter_hunks(iter_lines):
patch.hunks.append(hunk)
return patch
def iter_file_patch(iter_lines):
saved_lines = []
for line in iter_lines:
if line.startswith('*** '):
continue
elif line.startswith('--- '):
if len(saved_lines) > 0:
yield saved_lines
saved_lines = []
saved_lines.append(line)
if len(saved_lines) > 0:
yield saved_lines
def parse_patches(iter_lines):
return [parse_patch(f.__iter__()) for f in iter_file_patch(iter_lines)]
class AnnotateLine:
"""A line associated with the log that produced it"""
def __init__(self, text, log=None):
self.text = text
self.log = log
class CantGetRevisionData(Exception):
def __init__(self, revision):
Exception.__init__(self, "Can't get data for revision %s" % revision)
def annotate_file2(file_lines, anno_iter):
for result in iter_annotate_file(file_lines, anno_iter):
pass
return result
def iter_annotate_file(file_lines, anno_iter):
lines = [AnnotateLine(f) for f in file_lines]
patches = []
try:
for result in anno_iter:
if isinstance(result, progress.Progress):
yield result
continue
log, iter_inserted, patch = result
for (num, line) in iter_inserted:
old_num = num
for cur_patch in patches:
num = cur_patch.pos_in_mod(num)
if num == None:
break
if num >= len(lines):
continue
if num is not None and lines[num].log is None:
lines[num].log = log
patches=[patch]+patches
except CantGetRevisionData:
pass
yield lines
def difference_index(atext, btext):
"""Find the indext of the first character that differs betweeen two texts
:param atext: The first text
:type atext: str
:param btext: The second text
:type str: str
:return: The index, or None if there are no differences within the range
:rtype: int or NoneType
"""
length = len(atext)
if len(btext) < length:
length = len(btext)
for i in range(length):
if atext[i] != btext[i]:
return i;
return None
def test():
import unittest
class PatchesTester(unittest.TestCase):
def testValidPatchHeader(self):
"""Parse a valid patch header"""
lines = "--- orig/commands.py\n+++ mod/dommands.py\n".split('\n')
(orig, mod) = get_patch_names(lines.__iter__())
assert(orig == "orig/commands.py")
assert(mod == "mod/dommands.py")
def testInvalidPatchHeader(self):
"""Parse an invalid patch header"""
lines = "-- orig/commands.py\n+++ mod/dommands.py".split('\n')
self.assertRaises(MalformedPatchHeader, get_patch_names,
lines.__iter__())
def testValidHunkHeader(self):
"""Parse a valid hunk header"""
header = "@@ -34,11 +50,6 @@\n"
hunk = hunk_from_header(header);
assert (hunk.orig_pos == 34)
assert (hunk.orig_range == 11)
assert (hunk.mod_pos == 50)
assert (hunk.mod_range == 6)
assert (str(hunk) == header)
def testValidHunkHeader2(self):
"""Parse a tricky, valid hunk header"""
header = "@@ -1 +0,0 @@\n"
hunk = hunk_from_header(header);
assert (hunk.orig_pos == 1)
assert (hunk.orig_range == 1)
assert (hunk.mod_pos == 0)
assert (hunk.mod_range == 0)
assert (str(hunk) == header)
def makeMalformed(self, header):
self.assertRaises(MalformedHunkHeader, hunk_from_header, header)
def testInvalidHeader(self):
"""Parse an invalid hunk header"""
self.makeMalformed(" -34,11 +50,6 \n")
self.makeMalformed("@@ +50,6 -34,11 @@\n")
self.makeMalformed("@@ -34,11 +50,6 @@")
self.makeMalformed("@@ -34.5,11 +50,6 @@\n")
self.makeMalformed("@@-34,11 +50,6@@\n")
self.makeMalformed("@@ 34,11 50,6 @@\n")
self.makeMalformed("@@ -34,11 @@\n")
self.makeMalformed("@@ -34,11 +50,6.5 @@\n")
self.makeMalformed("@@ -34,11 +50,-6 @@\n")
def lineThing(self,text, type):
line = parse_line(text)
assert(isinstance(line, type))
assert(str(line)==text)
def makeMalformedLine(self, text):
self.assertRaises(MalformedLine, parse_line, text)
def testValidLine(self):
"""Parse a valid hunk line"""
self.lineThing(" hello\n", ContextLine)
self.lineThing("+hello\n", InsertLine)
self.lineThing("-hello\n", RemoveLine)
def testMalformedLine(self):
"""Parse invalid valid hunk lines"""
self.makeMalformedLine("hello\n")
def compare_parsed(self, patchtext):
lines = patchtext.splitlines(True)
patch = parse_patch(lines.__iter__())
pstr = str(patch)
i = difference_index(patchtext, pstr)
if i is not None:
print "%i: \"%s\" != \"%s\"" % (i, patchtext[i], pstr[i])
assert (patchtext == str(patch))
def testAll(self):
"""Test parsing a whole patch"""
patchtext = """--- orig/commands.py
+++ mod/commands.py
@@ -1337,7 +1337,8 @@
def set_title(self, command=None):
try:
- version = self.tree.tree_version.nonarch
+ version = pylon.alias_or_version(self.tree.tree_version, self.tree,
+ full=False)
except:
version = "[no version]"
if command is None:
@@ -1983,7 +1984,11 @@
version)
if len(new_merges) > 0:
if cmdutil.prompt("Log for merge"):
- mergestuff = cmdutil.log_for_merge(tree, comp_version)
+ if cmdutil.prompt("changelog for merge"):
+ mergestuff = "Patches applied:\\n"
+ mergestuff += pylon.changelog_for_merge(new_merges)
+ else:
+ mergestuff = cmdutil.log_for_merge(tree, comp_version)
log.description += mergestuff
log.save()
try:
"""
self.compare_parsed(patchtext)
def testInit(self):
"""Handle patches missing half the position, range tuple"""
patchtext = \
"""--- orig/__init__.py
+++ mod/__init__.py
@@ -1 +1,2 @@
__docformat__ = "restructuredtext en"
+__doc__ = An alternate Arch commandline interface"""
self.compare_parsed(patchtext)
def testLineLookup(self):
"""Make sure we can accurately look up mod line from orig"""
patch = parse_patch(open("testdata/diff"))
orig = list(open("testdata/orig"))
mod = list(open("testdata/mod"))
removals = []
for i in range(len(orig)):
mod_pos = patch.pos_in_mod(i)
if mod_pos is None:
removals.append(orig[i])
continue
assert(mod[mod_pos]==orig[i])
rem_iter = removals.__iter__()
for hunk in patch.hunks:
for line in hunk.lines:
if isinstance(line, RemoveLine):
next = rem_iter.next()
if line.contents != next:
sys.stdout.write(" orig:%spatch:%s" % (next,
line.contents))
assert(line.contents == next)
self.assertRaises(StopIteration, rem_iter.next)
def testFirstLineRenumber(self):
"""Make sure we handle lines at the beginning of the hunk"""
patch = parse_patch(open("testdata/insert_top.patch"))
assert (patch.pos_in_mod(0)==1)
patchesTestSuite = unittest.makeSuite(PatchesTester,'test')
runner = unittest.TextTestRunner(verbosity=0)
return runner.run(patchesTestSuite)
if __name__ == "__main__":
test()
# arch-tag: d1541a25-eac5-4de9-a476-08a7cecd5683
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