Mercurial > hg
annotate mercurial/manifest.py @ 6900:def492d1b592
store: change handling of decoding errors
author | Matt Mackall <mpm@selenic.com> |
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date | Wed, 13 Aug 2008 20:18:43 -0500 |
parents | be142cb994ff |
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1089 | 1 # manifest.py - manifest revision class for mercurial |
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2 # |
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3 # Copyright 2005-2007 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 node import bin, hex, nullid |
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9 from revlog import revlog, RevlogError |
3891 | 10 from i18n import _ |
6762 | 11 import array, struct, mdiff, parsers, util |
79 | 12 |
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13 class manifestdict(dict): |
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14 def __init__(self, mapping=None, flags=None): |
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15 if mapping is None: mapping = {} |
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16 if flags is None: flags = {} |
2831 | 17 dict.__init__(self, mapping) |
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18 self._flags = flags |
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19 def flags(self, f): |
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20 return self._flags.get(f, "") |
6743 | 21 def set(self, f, flags): |
22 self._flags[f] = flags | |
2831 | 23 def copy(self): |
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24 return manifestdict(dict.copy(self), dict.copy(self._flags)) |
2831 | 25 |
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26 class manifest(revlog): |
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27 def __init__(self, opener): |
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28 self.mapcache = None |
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29 self.listcache = None |
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30 revlog.__init__(self, opener, "00manifest.i") |
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31 |
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32 def parse(self, lines): |
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33 mfdict = manifestdict() |
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34 parsers.parse_manifest(mfdict, mfdict._flags, lines) |
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35 return mfdict |
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36 |
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37 def readdelta(self, node): |
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38 return self.parse(mdiff.patchtext(self.delta(node))) |
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39 |
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40 def read(self, node): |
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41 if node == nullid: return manifestdict() # don't upset local cache |
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42 if self.mapcache and self.mapcache[0] == node: |
561 | 43 return self.mapcache[1] |
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44 text = self.revision(node) |
1534 | 45 self.listcache = array.array('c', text) |
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46 mapping = self.parse(text) |
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47 self.mapcache = (node, mapping) |
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48 return mapping |
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49 |
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50 def _search(self, m, s, lo=0, hi=None): |
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51 '''return a tuple (start, end) that says where to find s within m. |
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52 |
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53 If the string is found m[start:end] are the line containing |
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54 that string. If start == end the string was not found and |
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55 they indicate the proper sorted insertion point. This was |
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56 taken from bisect_left, and modified to find line start/end as |
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57 it goes along. |
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58 |
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59 m should be a buffer or a string |
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60 s is a string''' |
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61 def advance(i, c): |
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62 while i < lenm and m[i] != c: |
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63 i += 1 |
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64 return i |
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65 lenm = len(m) |
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66 if not hi: |
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67 hi = lenm |
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68 while lo < hi: |
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69 mid = (lo + hi) // 2 |
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70 start = mid |
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71 while start > 0 and m[start-1] != '\n': |
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72 start -= 1 |
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73 end = advance(start, '\0') |
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74 if m[start:end] < s: |
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75 # we know that after the null there are 40 bytes of sha1 |
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76 # this translates to the bisect lo = mid + 1 |
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77 lo = advance(end + 40, '\n') + 1 |
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78 else: |
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79 # this translates to the bisect hi = mid |
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80 hi = start |
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81 end = advance(lo, '\0') |
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82 found = m[lo:end] |
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83 if cmp(s, found) == 0: |
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84 # we know that after the null there are 40 bytes of sha1 |
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85 end = advance(end + 40, '\n') |
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86 return (lo, end+1) |
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87 else: |
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88 return (lo, lo) |
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89 |
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90 def find(self, node, f): |
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91 '''look up entry for a single file efficiently. |
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92 return (node, flags) pair if found, (None, None) if not.''' |
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93 if self.mapcache and node == self.mapcache[0]: |
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94 return self.mapcache[1].get(f), self.mapcache[1].flags(f) |
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95 text = self.revision(node) |
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96 start, end = self._search(text, f) |
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97 if start == end: |
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98 return None, None |
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99 l = text[start:end] |
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100 f, n = l.split('\0') |
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101 return bin(n[:40]), n[40:-1] |
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102 |
2841 | 103 def add(self, map, transaction, link, p1=None, p2=None, |
741 | 104 changed=None): |
644 | 105 # apply the changes collected during the bisect loop to our addlist |
1534 | 106 # return a delta suitable for addrevision |
107 def addlistdelta(addlist, x): | |
108 # start from the bottom up | |
644 | 109 # so changes to the offsets don't mess things up. |
1534 | 110 i = len(x) |
644 | 111 while i > 0: |
112 i -= 1 | |
1534 | 113 start = x[i][0] |
114 end = x[i][1] | |
115 if x[i][2]: | |
116 addlist[start:end] = array.array('c', x[i][2]) | |
644 | 117 else: |
118 del addlist[start:end] | |
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119 return "".join([struct.pack(">lll", d[0], d[1], len(d[2])) + d[2] |
1534 | 120 for d in x ]) |
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121 |
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122 def checkforbidden(l): |
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123 for f in l: |
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124 if '\n' in f or '\r' in f: |
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125 raise RevlogError(_("'\\n' and '\\r' disallowed in filenames")) |
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126 |
644 | 127 # if we're using the listcache, make sure it is valid and |
128 # parented by the same node we're diffing against | |
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129 if not (changed and self.listcache and p1 and self.mapcache[0] == p1): |
6762 | 130 files = util.sort(map) |
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131 checkforbidden(files) |
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132 |
1651 | 133 # if this is changed to support newlines in filenames, |
134 # be sure to check the templates/ dir again (especially *-raw.tmpl) | |
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135 text = ["%s\000%s%s\n" % (f, hex(map[f]), map.flags(f)) |
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136 for f in files] |
1534 | 137 self.listcache = array.array('c', "".join(text)) |
644 | 138 cachedelta = None |
139 else: | |
1534 | 140 addlist = self.listcache |
644 | 141 |
6765
be142cb994ff
manifest: make checkforbidden take a list
Matt Mackall <mpm@selenic.com>
parents:
6762
diff
changeset
|
142 checkforbidden(changed[0]) |
644 | 143 # combine the changed lists into one list for sorting |
144 work = [[x, 0] for x in changed[0]] | |
145 work[len(work):] = [[x, 1] for x in changed[1]] | |
146 work.sort() | |
147 | |
148 delta = [] | |
1534 | 149 dstart = None |
150 dend = None | |
151 dline = [""] | |
152 start = 0 | |
153 # zero copy representation of addlist as a buffer | |
154 addbuf = buffer(addlist) | |
644 | 155 |
1534 | 156 # start with a readonly loop that finds the offset of |
157 # each line and creates the deltas | |
644 | 158 for w in work: |
159 f = w[0] | |
741 | 160 # bs will either be the index of the item or the insert point |
2320
dbdce3b99988
fix parsing of tags. make parse errors useful. add new tag tests.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
2142
diff
changeset
|
161 start, end = self._search(addbuf, f, start) |
644 | 162 if w[1] == 0: |
2841 | 163 l = "%s\000%s%s\n" % (f, hex(map[f]), map.flags(f)) |
644 | 164 else: |
1534 | 165 l = "" |
166 if start == end and w[1] == 1: | |
167 # item we want to delete was not found, error out | |
168 raise AssertionError( | |
3148
adb246ce6736
fix newline in error message
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3140
diff
changeset
|
169 _("failed to remove %s from manifest") % f) |
1534 | 170 if dstart != None and dstart <= start and dend >= start: |
171 if dend < end: | |
172 dend = end | |
173 if l: | |
174 dline.append(l) | |
644 | 175 else: |
1534 | 176 if dstart != None: |
177 delta.append([dstart, dend, "".join(dline)]) | |
178 dstart = start | |
179 dend = end | |
180 dline = [l] | |
644 | 181 |
1534 | 182 if dstart != None: |
183 delta.append([dstart, dend, "".join(dline)]) | |
184 # apply the delta to the addlist, and get a delta for addrevision | |
185 cachedelta = addlistdelta(addlist, delta) | |
644 | 186 |
1534 | 187 # the delta is only valid if we've been processing the tip revision |
188 if self.mapcache[0] != self.tip(): | |
189 cachedelta = None | |
190 self.listcache = addlist | |
191 | |
4633
ff7253a0d1da
Cleanup of whitespace, indentation and line continuation.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
4258
diff
changeset
|
192 n = self.addrevision(buffer(self.listcache), transaction, link, |
ff7253a0d1da
Cleanup of whitespace, indentation and line continuation.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
4258
diff
changeset
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193 p1, p2, cachedelta) |
2835
a9f5d4149123
Combine manifest dict and flags dict into a single object
Matt Mackall <mpm@selenic.com>
parents:
2834
diff
changeset
|
194 self.mapcache = (n, map) |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
195 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
196 return n |