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38 from fnmatch
import fnmatch
40 """Central issue reporting implementation.
42 This module implements a Reporter class that is used by other Python modules in
43 this directory to report issues. This allows central customization of the
44 output format, and also a central implementation for redirecting/copying
45 the output into a log file. This class also implements sorting for the
46 messages such that all issues from a single file are reported next to each
47 other in the output, as well as filtering to make it possible to suppress
51 class Location(object):
53 """Location for a reported message."""
55 def __init__(self
, filename
, line
):
56 """Create a location with the given file and line number.
58 One or both of the parameters can be None, but filename should be
61 self
.filename
= filename
64 def __nonzero__(self
):
65 """Make empty locations False in boolean context."""
66 return self
.filename
is not None
69 """Format the location as a string."""
71 return '{0}:{1}'.format(self
.filename
, self
.line
)
77 def __cmp__(self
, other
):
78 """Sort locations based on file name and line number."""
79 result
= cmp(self
.filename
, other
.filename
)
80 if not self
.filename
or result
!= 0:
82 return cmp(self
.line
, other
.line
)
84 class Message(object):
86 """Single reported message.
88 This class stores the contents of a reporter message for later output to
89 allow sorting the output messages reasonably by the reported location.
92 def __init__(self
, message
, details
=None, filename
=None, location
=None):
93 """Create a message object.
95 The message parameter provides the actual text, while optional details
96 provides a list of extra lines that provide context information for the
97 error. filename and location provide two alternative ways of
98 specifying the location of the issue:
99 - if filename is provided, the issue is reported in that file, without
101 - if location is provided, it should be a Location instance
104 self
.location
= Location(filename
, None)
106 self
.location
= location
108 self
.location
= Location(None, None)
109 self
.message
= message
110 self
.details
= details
112 def __cmp__(self
, other
):
113 """Sort messages based on file name and line number."""
114 return cmp(self
.location
, other
.location
)
116 class Filter(object):
118 """Filter expression to exclude messages."""
120 def __init__(self
, filterline
):
121 """Initialize a filter from a line in a filter file."""
122 self
._orgline
= filterline
123 filepattern
, text
= filterline
.split(':', 1)
124 if filepattern
== '*':
125 self
._filematcher
= lambda x
: x
is not None
127 self
._filematcher
= lambda x
: x
and fnmatch(x
, '*/' + filepattern
)
129 self
._filematcher
= lambda x
: x
is None
130 self
._textpattern
= text
.strip()
133 def matches(self
, message
):
134 """Check whether the filter matches a message."""
135 if not self
._filematcher
(message
.location
.filename
):
137 if not fnmatch(message
.message
, self
._textpattern
):
142 def get_match_count(self
):
143 """Return the number of times this filter has matched."""
147 """Return original line used to specify the filter."""
150 class Reporter(object):
152 """Collect and write out issues found by checker scripts."""
154 def __init__(self
, logfile
=None, quiet
=False):
155 """Initialize the reporter.
157 If logfile is set to a file name, all issues will be written to this
158 file in addition to stderr.
160 If quiet is set to True, the reporter will suppress all output.
164 self
._logfp
= open(logfile
, 'w')
169 def _write(self
, message
):
170 """Implement actual message writing."""
173 wholemsg
+= str(message
.location
) + ': '
174 wholemsg
+= message
.message
176 wholemsg
+= '\n ' + '\n '.join(message
.details
)
178 sys
.stderr
.write(wholemsg
)
180 self
._logfp
.write(wholemsg
)
182 def _report(self
, message
):
183 """Handle a single reporter message."""
186 for filterobj
in self
._filters
:
187 if filterobj
.matches(message
):
189 if not message
.location
:
192 self
._messages
.append(message
)
194 def load_filters(self
, filterfile
):
195 """Load filters for excluding messages from a file."""
196 with
open(filterfile
, 'r') as fp
:
197 for filterline
in fp
:
198 filterline
= filterline
.strip()
199 if not filterline
or filterline
.startswith('#'):
201 self
._filters
.append(Filter(filterline
))
203 def write_pending(self
):
204 """Write out pending messages in sorted order."""
205 self
._messages
.sort()
206 for message
in self
._messages
:
210 def report_unused_filters(self
):
211 """Report filters that did not match any messages."""
212 for filterobj
in self
._filters
:
213 if filterobj
.get_match_count() == 0:
214 # TODO: Consider adding the input filter file as location
215 text
= 'warning: unused filter: ' + filterobj
.get_text()
216 self
._write
(Message(text
))
219 """Close the log file if one exists."""
220 assert not self
._messages
225 def xml_assert(self
, xmlpath
, message
):
226 """Report issues in Doxygen XML that violate assumptions in the script."""
227 self
._report
(Message('warning: ' + message
, filename
=xmlpath
))
229 def input_error(self
, message
):
230 """Report issues in input files."""
231 self
._report
(Message('error: ' + message
))
233 def file_error(self
, fileobj
, message
):
234 """Report file-level issues."""
235 self
._report
(Message('error: ' + message
,
236 location
=fileobj
.get_reporter_location()))
238 def code_issue(self
, entity
, message
, details
=None):
239 """Report an issue in a code construct (not documentation related)."""
240 self
._report
(Message('warning: ' + message
, details
,
241 location
=entity
.get_reporter_location()))
243 def doc_error(self
, entity
, message
):
244 """Report an issue in documentation."""
245 self
._report
(Message('error: ' + entity
.get_name() + ': ' + message
,
246 location
=entity
.get_reporter_location()))
248 def doc_note(self
, entity
, message
):
249 """Report a potential issue in documentation."""
250 self
._report
(Message('note: ' + entity
.get_name() + ': ' + message
,
251 location
=entity
.get_reporter_location()))