Mercurial > hg
annotate hgext/blackbox.py @ 26362:3bfc473f4d33
gitweb, monoblue: fix vertical align of spans in .sourcelines
Empty lines in file view could produce an inexplicable margin before the next
line (most noticeable in browsers on webkit/blink engine). That was making
empty lines seem taller than the rest.
Instead of using default vertical align, let's set it to 'top'.
This issue is actually present in paper, and only recently got into gitweb
(2239626369f5) and monoblue (119202d4d7a4). There's a bit more to it in paper,
so that will be dealt with in a future patch.
Recipe to see live: preferably using a webkit/blink browser, such as chromium,
browse a file with empty lines, e.g. https://selenic.com/hg/file/3.5/README#l8
Selecting a block of text that includes empty lines will reveal white "breaks"
in the selection. Highlighted line (#l8) also shows such a break below itself.
author | Anton Shestakov <av6@dwimlabs.net> |
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date | Fri, 25 Sep 2015 03:02:38 +0800 |
parents | e8f9dffca36f |
children | ab6468270b83 |
rev | line source |
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18676 | 1 # blackbox.py - log repository events to a file for post-mortem debugging |
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2 # |
18676 | 3 # Copyright 2010 Nicolas Dumazet |
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4 # Copyright 2013 Facebook, Inc. |
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5 # |
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6 # This software may be used and distributed according to the terms of the |
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7 # GNU General Public License version 2 or any later version. |
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8 |
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9 """log repository events to a blackbox for debugging |
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10 |
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11 Logs event information to .hg/blackbox.log to help debug and diagnose problems. |
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12 The events that get logged can be configured via the blackbox.track config key. |
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13 Examples:: |
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14 |
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15 [blackbox] |
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16 track = * |
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17 |
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18 [blackbox] |
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19 track = command, commandfinish, commandexception, exthook, pythonhook |
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20 |
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21 [blackbox] |
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22 track = incoming |
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23 |
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24 [blackbox] |
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25 # limit the size of a log file |
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26 maxsize = 1.5 MB |
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27 # rotate up to N log files when the current one gets too big |
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28 maxfiles = 3 |
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29 |
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30 """ |
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31 |
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32 from mercurial import util, cmdutil |
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33 from mercurial.i18n import _ |
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34 import errno, os, re |
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35 |
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36 cmdtable = {} |
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37 command = cmdutil.command(cmdtable) |
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38 # Note for extension authors: ONLY specify testedwith = 'internal' for |
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39 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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40 # be specifying the version(s) of Mercurial they are tested with, or |
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41 # leave the attribute unspecified. |
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42 testedwith = 'internal' |
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43 lastblackbox = None |
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44 |
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45 def wrapui(ui): |
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46 class blackboxui(ui.__class__): |
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47 @util.propertycache |
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48 def track(self): |
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49 return self.configlist('blackbox', 'track', ['*']) |
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50 |
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51 def _openlogfile(self): |
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52 def rotate(oldpath, newpath): |
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53 try: |
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54 os.unlink(newpath) |
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55 except OSError as err: |
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56 if err.errno != errno.ENOENT: |
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57 self.debug("warning: cannot remove '%s': %s\n" % |
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58 (newpath, err.strerror)) |
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59 try: |
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60 if newpath: |
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61 os.rename(oldpath, newpath) |
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62 except OSError as err: |
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63 if err.errno != errno.ENOENT: |
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64 self.debug("warning: cannot rename '%s' to '%s': %s\n" % |
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65 (newpath, oldpath, err.strerror)) |
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66 |
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67 fp = self._bbopener('blackbox.log', 'a') |
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68 maxsize = self.configbytes('blackbox', 'maxsize', 1048576) |
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69 if maxsize > 0: |
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70 st = os.fstat(fp.fileno()) |
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71 if st.st_size >= maxsize: |
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72 path = fp.name |
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73 fp.close() |
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74 maxfiles = self.configint('blackbox', 'maxfiles', 7) |
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75 for i in xrange(maxfiles - 1, 1, -1): |
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76 rotate(oldpath='%s.%d' % (path, i - 1), |
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77 newpath='%s.%d' % (path, i)) |
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78 rotate(oldpath=path, |
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79 newpath=maxfiles > 0 and path + '.1') |
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80 fp = self._bbopener('blackbox.log', 'a') |
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81 return fp |
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82 |
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83 def log(self, event, *msg, **opts): |
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84 global lastblackbox |
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85 super(blackboxui, self).log(event, *msg, **opts) |
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86 |
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87 if not '*' in self.track and not event in self.track: |
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88 return |
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89 |
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90 if util.safehasattr(self, '_blackbox'): |
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91 blackbox = self._blackbox |
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92 elif util.safehasattr(self, '_bbopener'): |
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93 try: |
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94 self._blackbox = self._openlogfile() |
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95 except (IOError, OSError) as err: |
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96 self.debug('warning: cannot write to blackbox.log: %s\n' % |
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97 err.strerror) |
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98 del self._bbopener |
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99 self._blackbox = None |
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100 blackbox = self._blackbox |
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101 else: |
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102 # certain ui instances exist outside the context of |
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103 # a repo, so just default to the last blackbox that |
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104 # was seen. |
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105 blackbox = lastblackbox |
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106 |
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107 if blackbox: |
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108 date = util.datestr(None, '%Y/%m/%d %H:%M:%S') |
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109 user = util.getuser() |
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111 formattedmsg = msg[0] % msg[1:] |
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112 try: |
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114 (date, user, pid, formattedmsg)) | |
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115 except IOError as err: |
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116 self.debug('warning: cannot write to blackbox.log: %s\n' % |
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117 err.strerror) |
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118 lastblackbox = blackbox |
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119 |
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120 def setrepo(self, repo): |
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121 self._bbopener = repo.vfs |
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122 |
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123 ui.__class__ = blackboxui |
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124 |
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125 def uisetup(ui): |
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126 wrapui(ui) |
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127 |
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128 def reposetup(ui, repo): |
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129 # During 'hg pull' a httppeer repo is created to represent the remote repo. |
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130 # It doesn't have a .hg directory to put a blackbox in, so we don't do |
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131 # the blackbox setup for it. |
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132 if not repo.local(): |
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133 return |
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134 |
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135 if util.safehasattr(ui, 'setrepo'): |
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136 ui.setrepo(repo) |
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137 |
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138 @command('^blackbox', |
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139 [('l', 'limit', 10, _('the number of events to show')), |
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140 ], |
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141 _('hg blackbox [OPTION]...')) |
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142 def blackbox(ui, repo, *revs, **opts): |
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143 '''view the recent repository events |
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144 ''' |
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145 |
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146 if not os.path.exists(repo.join('blackbox.log')): |
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147 return |
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148 |
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149 limit = opts.get('limit') |
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150 blackbox = repo.vfs('blackbox.log', 'r') |
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151 lines = blackbox.read().split('\n') |
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152 |
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153 count = 0 |
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154 output = [] |
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155 for line in reversed(lines): |
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156 if count >= limit: |
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157 break |
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158 |
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159 # count the commands by matching lines like: 2013/01/23 19:13:36 root> |
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160 if re.match('^\d{4}/\d{2}/\d{2} \d{2}:\d{2}:\d{2} .*> .*', line): |
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161 count += 1 |
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162 output.append(line) |
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163 |
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164 ui.status('\n'.join(reversed(output))) |