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/*
GoToSocial
Copyright (C) 2021-2023 GoToSocial Authors admin@gotosocial.org
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package log
import (
"runtime"
"strings"
)
// Caller fetches the calling function name, skipping 'depth'. Results are cached per PC.
func Caller(depth int) string {
var pcs [1]uintptr
// Fetch calling function using calldepth
_ = runtime.Callers(depth, pcs[:])
fn := runtime.FuncForPC(pcs[0])
if fn == nil {
return ""
}
// return formatted name
return callername(fn)
}
// callername generates a human-readable calling function name.
func callername(fn *runtime.Func) string {
name := fn.Name()
// Drop all but the package name and function name, no mod path
if idx := strings.LastIndex(name, "/"); idx >= 0 {
name = name[idx+1:]
}
const params = `[...]`
// Drop any generic type parameter markers
if idx := strings.Index(name, params); idx >= 0 {
name = name[:idx] + name[idx+len(params):]
}
return name
}
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