fix wrong git ignore

internal/pdf/common/logging.go

@@ -0,0 +1,122 @@
+package common
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"runtime"
+)
+
+type Logger interface {
+	Error(format string, args ...any)
+	Warning(format string, args ...any)
+	Notice(format string, args ...any)
+	Info(format string, args ...any)
+	Debug(format string, args ...any)
+	Trace(format string, args ...any)
+}
+
+// Dummy Logger does nothing.
+type DummyLogger struct{}
+
+func (this DummyLogger) Error(format string, args ...any) {
+}
+
+func (this DummyLogger) Warning(format string, args ...any) {
+}
+
+func (this DummyLogger) Notice(format string, args ...any) {
+}
+
+func (this DummyLogger) Info(format string, args ...any) {
+}
+
+func (this DummyLogger) Debug(format string, args ...any) {
+}
+
+func (this DummyLogger) Trace(format string, args ...any) {
+}
+
+// Simple Console Logger that the tests use.
+type LogLevel int
+
+const (
+	LogLevelTrace   LogLevel = 5
+	LogLevelDebug   LogLevel = 4
+	LogLevelInfo    LogLevel = 3
+	LogLevelNotice  LogLevel = 2
+	LogLevelWarning LogLevel = 1
+	LogLevelError   LogLevel = 0
+)
+
+type ConsoleLogger struct {
+	LogLevel LogLevel
+}
+
+func NewConsoleLogger(logLevel LogLevel) *ConsoleLogger {
+	logger := ConsoleLogger{}
+	logger.LogLevel = logLevel
+	return &logger
+}
+
+func (this ConsoleLogger) Error(format string, args ...any) {
+	if this.LogLevel >= LogLevelError {
+		prefix := "[ERROR] "
+		this.output(os.Stdout, prefix, format, args...)
+	}
+}
+
+func (this ConsoleLogger) Warning(format string, args ...any) {
+	if this.LogLevel >= LogLevelWarning {
+		prefix := "[WARNING] "
+		this.output(os.Stdout, prefix, format, args...)
+	}
+}
+
+func (this ConsoleLogger) Notice(format string, args ...any) {
+	if this.LogLevel >= LogLevelNotice {
+		prefix := "[NOTICE] "
+		this.output(os.Stdout, prefix, format, args...)
+	}
+}
+
+func (this ConsoleLogger) Info(format string, args ...any) {
+	if this.LogLevel >= LogLevelInfo {
+		prefix := "[INFO] "
+		this.output(os.Stdout, prefix, format, args...)
+	}
+}
+
+func (this ConsoleLogger) Debug(format string, args ...any) {
+	if this.LogLevel >= LogLevelDebug {
+		prefix := "[DEBUG] "
+		this.output(os.Stdout, prefix, format, args...)
+	}
+}
+
+func (this ConsoleLogger) Trace(format string, args ...any) {
+	if this.LogLevel >= LogLevelTrace {
+		prefix := "[TRACE] "
+		this.output(os.Stdout, prefix, format, args...)
+	}
+}
+
+var Log Logger = DummyLogger{}
+
+func SetLogger(logger Logger) {
+	Log = logger
+}
+
+// output writes `format`, `args` log message prefixed by the source file name, line and `prefix`
+func (this ConsoleLogger) output(f *os.File, prefix string, format string, args ...any) {
+	_, file, line, ok := runtime.Caller(3)
+	if !ok {
+		file = "???"
+		line = 0
+	} else {
+		file = filepath.Base(file)
+	}
+
+	src := fmt.Sprintf("%s %s:%d ", prefix, file, line) + format + "\n"
+	fmt.Fprintf(f, src, args...)
+}