X-Git-Url: http://www.git.cypherpunks.ru/?a=blobdiff_plain;f=log.go;h=ea81c149375b491fb1642f9dc2693e2047041f24;hb=HEAD;hp=6b91c2d419bc3f6dccca491594c190755bafe108;hpb=734d81bb07d88fb293fefe6f9a0e75eb151dd555;p=goredo.git

diff --git a/log.go b/log.go
index 6b91c2d..ea81c14 100644
--- a/log.go
+++ b/log.go
@@ -1,19 +1,17 @@
-/*
-goredo -- djb's redo implementation on pure Go
-Copyright (C) 2020-2023 Sergey Matveev <stargrave@stargrave.org>
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, version 3 of the License.
-
-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 General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
+// goredo -- djb's redo implementation on pure Go
+// Copyright (C) 2020-2024 Sergey Matveev <stargrave@stargrave.org>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 3 of the License.
+//
+// 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 // Logging facilities
 
@@ -68,8 +66,9 @@ var (
 	flagLogPid     *bool
 	flagLogJS      *bool
 
-	LogMutex     sync.Mutex
-	KeyEraseLine string
+	LogMutex      sync.Mutex
+	KeyEraseLine  string
+	LastLoggedTgt string
 )
 
 func init() {
@@ -108,6 +107,34 @@ func erasedStatus(s, end string) string {
 	return s + KeyEraseLine + end
 }
 
+func withPrependedTgt(s string) {
+	if s[0] != '[' {
+		stderrWrite(erasedStatus(s, "\n"))
+		return
+	}
+	i := strings.IndexByte(s, ']')
+	if i == -1 {
+		stderrWrite(s)
+		return
+	}
+	tgt, s := s[1:i], s[i+1:]
+	if tgt != LastLoggedTgt {
+		LastLoggedTgt = tgt
+		tgt = "redo " + tgt + " ..."
+		if MyPID != 0 {
+			tgt = fmt.Sprintf("[%d] %s", MyPID, tgt)
+		}
+		stderrWrite(erasedStatus(colourize(CDebug, tgt), "\n"))
+	}
+	stderrWrite(erasedStatus(s, "\n"))
+}
+
+func stderrWrite(s string) {
+	LogMutex.Lock()
+	os.Stderr.WriteString(s)
+	LogMutex.Unlock()
+}
+
 func tracef(level, format string, args ...interface{}) {
 	var p string
 	if MyPID != 0 {
@@ -116,9 +143,7 @@ func tracef(level, format string, args ...interface{}) {
 	switch level {
 	case CNone:
 		p = erasedStatus(StderrPrefix+p+fmt.Sprintf(format, args...), "\n")
-		LogMutex.Lock()
-		os.Stderr.WriteString(p)
-		LogMutex.Unlock()
+		stderrWrite(p)
 		return
 	case CDebug:
 		if !Debug {
@@ -153,9 +178,7 @@ func tracef(level, format string, args ...interface{}) {
 	msg := fmt.Sprintf(format, args...)
 	msg = StderrPrefix + colourize(level, p+strings.Repeat(". ", Level)+msg)
 	msg = erasedStatus(msg, "\n")
-	LogMutex.Lock()
-	os.Stderr.WriteString(msg)
-	LogMutex.Unlock()
+	stderrWrite(msg)
 }
 
 func colourize(colour, s string) string {