73 lines
2.3 KiB
Zig
73 lines
2.3 KiB
Zig
const std = @import("std");
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const testing = std.testing;
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/// Returns the log function, which must be present in the root module.
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pub fn log(
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/// The value returned by @cImport.
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/// Must include the "glib.h" or "glib/gmessages.h" header.
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comptime c: type,
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/// The name of the module used for the log output.
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comptime module_name: []const u8,
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/// The length of the buffer used for the formatted output.
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/// This is the maximum length of log messages.
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comptime buf_size: usize,
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) @TypeOf(LogStruct(c, module_name, buf_size).log) {
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return LogStruct(c, module_name, buf_size).log;
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}
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fn LogStruct(comptime c: type, comptime module_name: []const u8, comptime buf_size: usize) type {
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return struct {
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threadlocal var fmt_buf: [buf_size]u8 = undefined;
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pub fn log(
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comptime level: std.log.Level,
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comptime scope: @TypeOf(.EnumLiteral),
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comptime format: []const u8,
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args: anytype,
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) void {
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const g_level = switch (level) {
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.err => c.G_LOG_LEVEL_CRITICAL,
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.warn => c.G_LOG_LEVEL_WARNING,
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.info => c.G_LOG_LEVEL_INFO,
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.debug => c.G_LOG_LEVEL_DEBUG,
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};
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const s = std.fmt.bufPrintZ(
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&@This().fmt_buf,
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format,
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args,
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) catch return;
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var fields = [_]c.GLogField{
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c.GLogField{
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.key = "GLIB_DOMAIN",
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.value = @ptrCast(
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*const anyopaque,
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// don't include scope name if not explicitly specified
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if (std.mem.eql(u8, @tagName(scope), "default"))
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module_name
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else
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module_name ++ "-" ++ @tagName(scope),
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),
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.length = -1,
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},
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c.GLogField{
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.key = "MESSAGE",
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.value = @ptrCast(*const anyopaque, s),
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.length = -1,
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},
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};
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c.g_log_structured_array(
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g_level,
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&fields,
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fields.len,
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);
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}
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};
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}
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test {
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std.testing.refAllDecls(@This());
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}
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