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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_VLOG_H_
#define BASE_VLOG_H_
#pragma once
#include <cstddef>
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "base/string_piece.h"
namespace logging {
// A helper class containing all the settings for vlogging.
class VlogInfo {
public:
// |v_switch| gives the default maximal active V-logging level; 0 is
// the default. Normally positive values are used for V-logging
// levels.
//
// |vmodule_switch| gives the per-module maximal V-logging levels to
// override the value given by |v_switch|.
// E.g. "my_module=2,foo*=3" would change the logging level for all
// code in source files "my_module.*" and "foo*.*" ("-inl" suffixes
// are also disregarded for this matching).
//
// Any pattern containing a forward or backward slash will be tested
// against the whole pathname and not just the module. E.g.,
// "*/foo/bar/*=2" would change the logging level for all code in
// source files under a "foo/bar" directory.
VlogInfo(const std::string& v_switch,
const std::string& vmodule_switch);
~VlogInfo();
// Returns the vlog level for a given file (usually taken from
// __FILE__).
int GetVlogLevel(const base::StringPiece& file);
static const int kDefaultVlogLevel;
private:
// VmodulePattern holds all the information for each pattern parsed
// from |vmodule_switch|.
struct VmodulePattern {
enum MatchTarget { MATCH_MODULE, MATCH_FILE };
explicit VmodulePattern(const std::string& pattern);
VmodulePattern();
std::string pattern;
int vlog_level;
MatchTarget match_target;
};
int max_vlog_level_;
std::vector<VmodulePattern> vmodule_levels_;
DISALLOW_COPY_AND_ASSIGN(VlogInfo);
};
} // namespace logging
#endif // BASE_VLOG_H_
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