func Print(c int, a ...interface{}) (int, error) {
if GetOS() == OS_LINUX {
defer locker.Unlock()
locker.Lock()
fc := GetForegroundColor(OS_LINUX, c)
return color.New(color.Attribute(fc)).Print(a...)
}
return fmt.Print(a...)
}
// Dump container logs.
func (containers Containers) Logs(follow bool, timestamps bool, tail string, colorize bool, since string) {
var (
sources = make([]multiplexio.Source, 0, 2*len(containers))
maxPrefixLength = strconv.Itoa(containers.maxNameLength())
)
appendSources := func(reader io.Reader, color *ansi.Color, name string, separator string) {
if reader != nil {
prefix := fmt.Sprintf("%"+maxPrefixLength+"s "+separator+" ", name)
sources = append(sources, multiplexio.Source{
Reader: reader,
Write: write(prefix, color, timestamps),
})
}
}
counter := 0
for _, container := range containers {
var (
logs = container.Logs(follow, since, tail)
stdoutColor *ansi.Color
stderrColor *ansi.Color
)
for _, log := range logs {
if colorize {
// red has a negative/error connotation, so skip it
ansiAttribute := ansi.Attribute(int(ansi.FgGreen) + counter%int(ansi.FgWhite-ansi.FgGreen))
stdoutColor = ansi.New(ansiAttribute)
// To synchronize their output, we need to multiplex stdout & stderr
// onto the same stream. Unfortunately, that means that the user won't
// be able to pipe them separately, so we use bold as a distinguishing
// characteristic.
stderrColor = ansi.New(ansiAttribute).Add(ansi.Bold)
}
appendSources(log.Stdout, stdoutColor, log.Name, "|")
appendSources(log.Stderr, stderrColor, log.Name, "*")
counter = counter + 1
}
}
if len(sources) > 0 {
aggregatedReader := multiplexio.NewReader(multiplexio.Options{}, sources...)
io.Copy(os.Stdout, aggregatedReader)
}
}
// attr takes a color integer and converts it to color.Attribute
func attr(sgr int) color.Attribute {
return color.Attribute(sgr)
}