1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
13 #include "base/base_export.h"
14 #include "base/basictypes.h"
15 #include "base/string_piece.h"
19 // A helper class containing all the settings for vlogging.
20 class BASE_EXPORT VlogInfo
{
22 static const int kDefaultVlogLevel
;
24 // |v_switch| gives the default maximal active V-logging level; 0 is
25 // the default. Normally positive values are used for V-logging
28 // |vmodule_switch| gives the per-module maximal V-logging levels to
29 // override the value given by |v_switch|.
30 // E.g. "my_module=2,foo*=3" would change the logging level for all
31 // code in source files "my_module.*" and "foo*.*" ("-inl" suffixes
32 // are also disregarded for this matching).
34 // |log_severity| points to an int that stores the log level. If a valid
35 // |v_switch| is provided, it will set the log level, and the default
36 // vlog severity will be read from there..
38 // Any pattern containing a forward or backward slash will be tested
39 // against the whole pathname and not just the module. E.g.,
40 // "*/foo/bar/*=2" would change the logging level for all code in
41 // source files under a "foo/bar" directory.
42 VlogInfo(const std::string
& v_switch
,
43 const std::string
& vmodule_switch
,
47 // Returns the vlog level for a given file (usually taken from
49 int GetVlogLevel(const base::StringPiece
& file
) const;
52 void SetMaxVlogLevel(int level
);
53 int GetMaxVlogLevel() const;
55 // VmodulePattern holds all the information for each pattern parsed
56 // from |vmodule_switch|.
57 struct VmodulePattern
;
58 std::vector
<VmodulePattern
> vmodule_levels_
;
61 DISALLOW_COPY_AND_ASSIGN(VlogInfo
);
64 // Returns true if the string passed in matches the vlog pattern. The
65 // vlog pattern string can contain wildcards like * and ?. ? matches
66 // exactly one character while * matches 0 or more characters. Also,
67 // as a special case, a / or \ character matches either / or \.
70 // "kh?n" matches "khan" but not "khn" or "khaan"
71 // "kh*n" matches "khn", "khan", or even "khaaaaan"
72 // "/foo\bar" matches "/foo/bar", "\foo\bar", or "/foo\bar"
73 // (disregarding C escaping rules)
74 BASE_EXPORT
bool MatchVlogPattern(const base::StringPiece
& string
,
75 const base::StringPiece
& vlog_pattern
);
77 } // namespace logging
79 #endif // BASE_VLOG_H_