Move regexp support to separate file

Change-Id: I73ec57c3df82ce8503871bc44764c2ff251f084d

regexp.go

@@ -0,0 +1,65 @@
+package steno
+
+import (
+	"regexp"
+)
+
+// loggerRegexp* used to match log name and log level
+var loggerRegexp *regexp.Regexp
+var loggerRegexpLevel *LogLevel
+
+func SetLoggerRegexp(pattern string, level *LogLevel) error {
+	loggersMutex.Lock()
+	defer loggersMutex.Unlock()
+
+	clearLoggerRegexp()
+	return setLoggerRegexp(pattern, level)
+}
+
+func ClearLoggerRegexp() {
+	loggersMutex.Lock()
+	defer loggersMutex.Unlock()
+
+	clearLoggerRegexp()
+}
+
+func setLoggerRegexp(pattern string, level *LogLevel) error {
+	regExp, err := regexp.Compile(pattern)
+	if err != nil {
+		return err
+	}
+
+	// If here, Logger regexp is valid
+	loggerRegexp = regExp
+	loggerRegexpLevel = level
+	for name, logger := range loggers {
+		if loggerRegexp.MatchString(name) {
+			logger.level = loggerRegexpLevel
+		}
+	}
+
+	return nil
+}
+
+func clearLoggerRegexp() {
+	if loggerRegexp == nil {
+		return
+	}
+
+	for name, logger := range loggers {
+		if loggerRegexp.MatchString(name) {
+			logger.level = config.Level
+		}
+	}
+
+	loggerRegexp = nil
+	loggerRegexpLevel = nil
+}
+
+func computeLevel(name string) *LogLevel {
+	if loggerRegexp != nil && loggerRegexp.MatchString(name) {
+		return loggerRegexpLevel
+	}
+
+	return config.Level
+}

steno.go

@@ -2,7 +2,6 @@ package steno
 
 import (
 	"encoding/json"
-	"regexp"
 	"sync"
 )
 
@@ -15,10 +14,6 @@ var loggersMutex sync.Mutex
 // loggers only saves BaseLogger
 var loggers = make(map[string]*BaseLogger)
 
-// loggerRegexp* used to match log name and log level
-var loggerRegexp *regexp.Regexp
-var loggerRegexpLevel *LogLevel
-
 func Init(c *Config) {
 	config = *c
 
@@ -61,62 +56,6 @@ func NewLogger(name string) Logger {
 	return logger
 }
 
-func SetLoggerRegexp(pattern string, level *LogLevel) error {
-	loggersMutex.Lock()
-	defer loggersMutex.Unlock()
-
-	clearLoggerRegexp()
-	return setLoggerRegexp(pattern, level)
-}
-
-func ClearLoggerRegexp() {
-	loggersMutex.Lock()
-	defer loggersMutex.Unlock()
-
-	clearLoggerRegexp()
-}
-
-func setLoggerRegexp(pattern string, level *LogLevel) error {
-	regExp, err := regexp.Compile(pattern)
-	if err != nil {
-		return err
-	}
-
-	// If here, Logger regexp is valid
-	loggerRegexp = regExp
-	loggerRegexpLevel = level
-	for name, logger := range loggers {
-		if loggerRegexp.MatchString(name) {
-			logger.level = loggerRegexpLevel
-		}
-	}
-
-	return nil
-}
-
-func clearLoggerRegexp() {
-	if loggerRegexp == nil {
-		return
-	}
-
-	for name, logger := range loggers {
-		if loggerRegexp.MatchString(name) {
-			logger.level = config.Level
-		}
-	}
-
-	loggerRegexp = nil
-	loggerRegexpLevel = nil
-}
-
-func computeLevel(name string) *LogLevel {
-	if loggerRegexp != nil && loggerRegexp.MatchString(name) {
-		return loggerRegexpLevel
-	}
-
-	return config.Level
-}
-
 func loggersInJson() string {
 	bytes, _ := json.Marshal(loggers)
 	return string(bytes)