func redoIfX(args []string, fn func(*redux.File, *redux.File) error) error {
dependentPath := os.Getenv("REDO_PARENT")
if len(dependentPath) == 0 {
return fmt.Errorf("Missing env variable REDO_PARENT")
}
wd := os.Getenv("REDO_PARENT_DIR")
// The action is triggered by dependent.
dependent, err := redux.NewFile(wd, dependentPath)
if err != nil {
return err
}
for _, path := range args {
if file, err := redux.NewFile(wd, path); err != nil {
return err
} else if err := fn(file, dependent); err != nil {
return err
}
}
return nil
}
func runRedo(targets []string) error {
// set options from environment if not provided.
if verbosity.NArg() == 0 {
for i := len(os.Getenv("REDO_VERBOSE")); i > 0; i-- {
verbosity.Set("true")
}
}
if debug.NArg() == 0 {
if len(os.Getenv("REDO_DEBUG")) > 0 {
debug.Set("true")
}
}
if s := shArgs; s != "" {
os.Setenv("REDO_SHELL_ARGS", s)
redux.ShellArgs = s
}
// if shell args are set, ensure that at least minimal verbosity is also set.
if redux.ShellArgs != "" && (verbosity.NArg() == 0) {
verbosity.Set("true")
}
// Set explicit options to avoid clobbering environment inherited options.
if n := verbosity.NArg(); n > 0 {
os.Setenv("REDO_VERBOSE", strings.Repeat("x", n))
redux.Verbosity = n
}
if n := debug.NArg(); n > 0 {
os.Setenv("REDO_DEBUG", "true")
redux.Debug = true
}
// If no arguments are specified, use run default target if its .do file exists.
// Otherwise, print usage and exit.
if len(targets) == 0 && os.Getenv("REDO_DEPTH") == "" {
if found, err := fileutils.FileExists(DEFAULT_DO); err != nil {
return err
} else if found {
targets = append(targets, DEFAULT_TARGET)
} else {
targets = append(targets, "all")
}
}
wd, err := os.Getwd()
if err != nil {
return err
}
// It *is* slower to reinitialize for each target, but doing
// so guarantees that a single redo call with multiple targets that
// potentially have differing roots will work correctly.
for _, path := range targets {
if file, err := redux.NewFile(wd, path); err != nil {
return err
} else {
file.IsTaskFlag = isTask
if err := file.Redo(); err != nil {
return err
}
}
}
return nil
}