annotate mercurial/changelog.py @ 3420:52617d992eed

Report branch for hg log and friends
author Matt Mackall <mpm@selenic.com>
date Tue, 17 Oct 2006 18:30:18 -0500
parents f2de6b6bc57a
children
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1 # changelog.py - changelog class for mercurial
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2 #
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3 # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms
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6 # of the GNU General Public License, incorporated herein by reference.
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7
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8 from revlog import *
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9 from i18n import gettext as _
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10 from demandload import demandload
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11 demandload(globals(), "os time util")
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12
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13 def _string_escape(text):
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14 """
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15 >>> d = {'nl': chr(10), 'bs': chr(92), 'cr': chr(13), 'nul': chr(0)}
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16 >>> s = "ab%(nl)scd%(bs)s%(bs)sn%(nul)sab%(cr)scd%(bs)s%(nl)s" % d
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17 >>> s
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18 'ab\\ncd\\\\\\\\n\\x00ab\\rcd\\\\\\n'
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19 >>> res = _string_escape(s)
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20 >>> s == _string_unescape(res)
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21 True
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22 """
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23 # subset of the string_escape codec
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24 text = text.replace('\\', '\\\\').replace('\n', '\\n').replace('\r', '\\r')
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25 return text.replace('\0', '\\0')
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27 def _string_unescape(text):
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28 return text.decode('string_escape')
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29
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30 class changelog(revlog):
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31 def __init__(self, opener, defversion=REVLOGV0):
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32 revlog.__init__(self, opener, "00changelog.i", "00changelog.d",
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33 defversion)
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34
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35 def decode_extra(self, text):
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36 extra = {}
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37 for l in text.split('\0'):
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38 if not l:
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39 continue
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40 k, v = _string_unescape(l).split(':', 1)
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41 extra[k] = v
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42 return extra
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43
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44 def encode_extra(self, d):
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45 items = [_string_escape(":".join(t)) for t in d.iteritems()]
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46 return "\0".join(items)
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47
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48 def extract(self, text):
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49 """
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50 format used:
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51 nodeid\n : manifest node in ascii
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52 user\n : user, no \n or \r allowed
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53 time tz extra\n : date (time is int or float, timezone is int)
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54 : extra is metadatas, encoded and separated by '\0'
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55 : older versions ignore it
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56 files\n\n : files modified by the cset, no \n or \r allowed
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57 (.*) : comment (free text, ideally utf-8)
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58
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59 changelog v0 doesn't use extra
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60 """
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61 if not text:
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62 return (nullid, "", (0, 0), [], "", {})
0
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63 last = text.index("\n\n")
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64 desc = text[last + 2:]
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65 l = text[:last].split('\n')
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66 manifest = bin(l[0])
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67 user = l[1]
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68
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69 extra_data = l[2].split(' ', 2)
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70 if len(extra_data) != 3:
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71 time = float(extra_data.pop(0))
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72 try:
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73 # various tools did silly things with the time zone field.
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74 timezone = int(extra_data[0])
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75 except:
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76 timezone = 0
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77 extra = {}
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78 else:
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79 time, timezone, extra = extra_data
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80 time, timezone = float(time), int(timezone)
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81 extra = self.decode_extra(extra)
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82 files = l[3:]
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83 return (manifest, user, (time, timezone), files, desc, extra)
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84
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85 def read(self, node):
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86 return self.extract(self.revision(node))
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87
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88 def add(self, manifest, list, desc, transaction, p1=None, p2=None,
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89 user=None, date=None, extra={}):
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90
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91 if date:
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92 parseddate = "%d %d" % util.parsedate(date)
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93 else:
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94 parseddate = "%d %d" % util.makedate()
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95 if extra:
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96 extra = self.encode_extra(extra)
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97 parseddate = "%s %s" % (parseddate, extra)
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98 list.sort()
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99 l = [hex(manifest), user, parseddate] + list + ["", desc]
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100 text = "\n".join(l)
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101 return self.addrevision(text, transaction, self.count(), p1, p2)