// ListTrace implements l command (list trace).
func ListTrace(argument string, env *environments.Environment) {
number, err := strconv.Atoi(argument)
if err != nil || number < 0 {
utils.Logger.Panicf("Cannot convert argument to a command number: %s", argument)
}
commands, err := historyentries.GetCommands(historyentries.GetCommandsPrecise, nil, env, number)
if err != nil {
utils.Logger.Panic(err)
}
command := commands.Result().(historyentries.HistoryEntry)
hashFilename := command.GetTraceName()
filename := env.GetTraceFileName(hashFilename)
if _, err := os.Stat(filename); os.IsNotExist(err) {
utils.Logger.Panicf("Output for %s is not exist", argument)
}
file := utils.Open(filename)
defer file.Close()
ungzippedFile, err := gzip.NewReader(file)
if err != nil {
utils.Logger.Panic(err)
}
defer ungzippedFile.Close()
scanner := bufio.NewScanner(ungzippedFile)
for scanner.Scan() {
os.Stdout.WriteString(scanner.Text())
os.Stdout.WriteString("\n")
}
if err := scanner.Err(); err != nil {
utils.Logger.Panic(err)
}
}
// GetCommands returns a keeper for the commands based on given mode and regular expression.
// varargs is the auxiliary list of numbers which makes sense in the context of GetCommandsMode setting
// only.
func GetCommands(mode GetCommandsMode, filter *utils.Regexp, env *environments.Environment, varargs ...int) (commands Keeper, err error) {
keeper := getKeeper(mode, varargs...)
resultChan, consumeChan := processHistories(env)
parser := getParser(env)
histFileName, err := env.GetHistFileName()
if err != nil {
return
}
file := utils.Open(histFileName)
defer file.Close()
scanner := bufio.NewScanner(file)
commands, err = parser(keeper, scanner, filter, consumeChan)
if err == nil {
<-resultChan
return commands, nil
}
return
}