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https://github.com/servalproject/serval-dna.git
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a79156c4d0
The daemon API is built as a Swift module called ServalDNA. The new CliContext class allows easy implementation of CLI output using Swift code. The new CliContextFile subclass is the obvious first implementation, equivalent to cli_stdio.c. The 'servaldswift' executable now uses CliContextFile to print its CLI output to standard output. The new delegated log output support constructs each log line in a buffer and prints it by calling the delegate's 'print' function at end-of-line. The 'servaldswift' executable now provides a log output delegate in Swift that simply prints to standard error, replacing log_output_console.o, which is omitted from its link.
55 lines
1.7 KiB
Swift
55 lines
1.7 KiB
Swift
/*
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Serval DNA daemon in Swift
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Copyright 2017 Flinders University
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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import Foundation
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import ServalDNA
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import servald.log
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// Logging
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//
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// A simplistic console log outputter that writes to standard error and is not
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// configurable. Note that log_output_console.o is not linked into
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// servaldswift, in order to avoid duplicate log outputs on standard error.
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private func logPrint(_ level: CInt, _ message: UnsafePointer<CChar>?, _ overrun: Int8) {
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let level_text = String(cString: serval_log_level_prefix_string(level)!)
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let message_text = String(cString: message!)
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FileHandle.standardError.write("\(level_text) \(message_text)\n".data(using:.utf8)!)
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}
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serval_log_delegate.print = logPrint
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serval_log_delegate.minimum_level = LOG_LEVEL_WARN
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serval_log_delegate.show_prolog = 1
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serval_log_delegate.show_pid = 1
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serval_log_delegate.show_time = 1
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// Output
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var contextFile = CliContextFile(FileHandle.standardOutput)
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// Invocation
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let status = serval_commandline_main(context: contextFile, args: CommandLine.arguments)
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// Cleanup
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contextFile.flush()
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exit(status)
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