gecko-dev/xpcom/base/NSPRLogModulesParser.cpp

55 lines
1.6 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "NSPRLogModulesParser.h"
#include "mozilla/Tokenizer.h"
const char kDelimiters[] = ", ";
const char kAdditionalWordChars[] = "_-";
namespace mozilla {
void
NSPRLogModulesParser(const char* aLogModules,
Function<void(const char*, LogLevel)> aCallback)
{
if (!aLogModules) {
return;
}
Tokenizer parser(aLogModules, kDelimiters, kAdditionalWordChars);
nsAutoCString moduleName;
// Format: LOG_MODULES="Foo:2,Bar, Baz:5"
while (parser.ReadWord(moduleName)) {
// Next should be :<level>, default to Error if not provided.
LogLevel logLevel = LogLevel::Error;
if (parser.CheckChar(':')) {
// Check if a negative value is provided.
int32_t multiplier = 1;
if (parser.CheckChar([](const char aChar) { return aChar == '-'; })) {
multiplier = -1;
}
// NB: If a level isn't provided after the ':' we assume the default
// Error level is desired. This differs from NSPR which will stop
// processing the log module string in this case.
int32_t level;
if (parser.ReadInteger(&level)) {
logLevel = ToLogLevel(level * multiplier);
}
}
aCallback(moduleName.get(), logLevel);
// Skip ahead to the next token.
parser.SkipWhites();
}
}
} // namespace mozilla