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Refactor instructions out

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This commit is contained in:
David Majdandžić
2024-07-01 12:12:16 +02:00
parent 84c1652381
commit 508ebe0856
3 changed files with 126 additions and 117 deletions
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114
main.go
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@@ -30,91 +30,6 @@ const PathColor = Green
var DirRegex, _ = regexp.Compile(`^(.+?)[/\\]sync$`)
var programName = os.Args[0]
type LinkInstruction struct {
Source string
Target string
Force bool
}
func (instruction *LinkInstruction) RunSync() error {
if !FileExists(instruction.Source) {
return fmt.Errorf("instruction source %s%s%s does not exist", SourceColor, instruction.Source, DefaultColor)
}
if AreSame(instruction.Source, instruction.Target) {
log.Printf("Source %s%s%s and target %s%s%s are the same, %snothing to do...%s", SourceColor, instruction.Source, DefaultColor, TargetColor, instruction.Target, DefaultColor, PathColor, DefaultColor)
return nil
}
if FileExists(instruction.Target) {
if instruction.Force {
isSymlink, err := IsSymlink(instruction.Target)
if err != nil {
return fmt.Errorf("could not determine whether %s%s%s is a sym link or not, stopping; err: %s%+v%s", TargetColor, instruction.Target, DefaultColor, ErrorColor, err, DefaultColor)
}
if isSymlink {
log.Printf("Removing symlink at %s%s%s", TargetColor, instruction.Target, DefaultColor)
err = os.Remove(instruction.Target)
if err != nil {
return fmt.Errorf("failed deleting %s%s%s due to %s%+v%s", TargetColor, instruction.Target, DefaultColor, ErrorColor, err, DefaultColor)
}
} else {
return fmt.Errorf("refusing to delte actual (non symlink) file %s%s%s", TargetColor, instruction.Target, DefaultColor)
}
} else {
return fmt.Errorf("target %s%s%s exists - handle manually or set the 'forced' flag (3rd field)", TargetColor, instruction.Target, DefaultColor)
}
}
err := os.Symlink(instruction.Source, instruction.Target)
if err != nil {
return fmt.Errorf("failed creating symlink between %s%s%s and %s%s%s with error %s%+v%s", SourceColor, instruction.Source, DefaultColor, TargetColor, instruction.Target, DefaultColor, ErrorColor, err, DefaultColor)
}
log.Printf("Created symlink between %s%s%s and %s%s%s", SourceColor, instruction.Source, DefaultColor, TargetColor, instruction.Target, DefaultColor)
return nil
}
func (instruction *LinkInstruction) RunAsync(status chan(error)) {
if !FileExists(instruction.Source) {
status <- fmt.Errorf("instruction source %s%s%s does not exist", SourceColor, instruction.Source, DefaultColor)
}
if AreSame(instruction.Source, instruction.Target) {
status <- fmt.Errorf("source %s%s%s and target %s%s%s are the same, %snothing to do...%s", SourceColor, instruction.Source, DefaultColor, TargetColor, instruction.Target, DefaultColor, PathColor, DefaultColor)
}
if FileExists(instruction.Target) {
if instruction.Force {
isSymlink, err := IsSymlink(instruction.Target)
if err != nil {
status <- fmt.Errorf("could not determine whether %s%s%s is a sym link or not, stopping; err: %s%+v%s", TargetColor, instruction.Target, DefaultColor, ErrorColor, err, DefaultColor)
}
if isSymlink {
log.Printf("Removing symlink at %s%s%s", TargetColor, instruction.Target, DefaultColor)
err = os.Remove(instruction.Target)
if err != nil {
status <- fmt.Errorf("failed deleting %s%s%s due to %s%+v%s", TargetColor, instruction.Target, DefaultColor, ErrorColor, err, DefaultColor)
}
} else {
status <- fmt.Errorf("refusing to delte actual (non symlink) file %s%s%s", TargetColor, instruction.Target, DefaultColor)
}
} else {
status <- fmt.Errorf("target %s%s%s exists - handle manually or set the 'forced' flag (3rd field)", TargetColor, instruction.Target, DefaultColor)
}
}
err := os.Symlink(instruction.Source, instruction.Target)
if err != nil {
status <- fmt.Errorf("failed creating symlink between %s%s%s and %s%s%s with error %s%+v%s", SourceColor, instruction.Source, DefaultColor, TargetColor, instruction.Target, DefaultColor, ErrorColor, err, DefaultColor)
}
log.Printf("Created symlink between %s%s%s and %s%s%s", SourceColor, instruction.Source, DefaultColor, TargetColor, instruction.Target, DefaultColor)
status <- nil
}
func main() {
// Format:
// source,target,force?
@@ -148,10 +63,10 @@ func main() {
os.Exit(1)
}
for _, instruction := range instructions {
log.Printf("Processing: %s", InstructionToString(instruction))
log.Printf("Processing: %s", instruction.String())
err := instruction.RunSync()
if err != nil {
log.Printf("Failed parsing instruction %s%s%s due to %s%+v%s", SourceColor, InstructionToString(instruction), DefaultColor, ErrorColor, err, DefaultColor)
log.Printf("Failed parsing instruction %s%s%s due to %s%+v%s", SourceColor, instruction.String(), DefaultColor, ErrorColor, err, DefaultColor)
continue
}
}
@@ -252,28 +167,3 @@ func ReadFromStdin() ([]LinkInstruction, error) {
log.Printf("Read %d instructions from stdin", len(instructions))
return instructions, nil
}
func ParseInstruction(line string) (LinkInstruction, error) {
parts := strings.Split(line, deliminer)
instruction := LinkInstruction{}
if len(parts) < 2 {
return instruction, fmt.Errorf("invalid format - not enough parameters (must have at least source and target)")
}
instruction.Source = parts[0]
instruction.Target = parts[1]
instruction.Force = false
if len(parts) > 2 {
res, _ := regexp.MatchString("^(?i)T|TRUE$", parts[2])
instruction.Force = res
}
instruction.Source, _ = ConvertHome(instruction.Source)
instruction.Target, _ = ConvertHome(instruction.Target)
instruction.Source = NormalizePath(instruction.Source)
instruction.Target = NormalizePath(instruction.Target)
return instruction, nil
}