mirror of
https://codeberg.org/scip/rpnc.git
synced 2025-12-17 04:21:01 +01:00
fix linter errors
This commit is contained in:
T.v.Dein
255
command.go
255
command.go
@@ -42,9 +42,8 @@ func NewCommand(help string, function CommandFunction) *Command {
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}
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}
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// define all management (that is: non calculation) commands
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func (c *Calc) SetCommands() {
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c.SettingsCommands = Commands{
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func (c *Calc) SetSettingsCommands() Commands {
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return Commands{
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// Toggles
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"debug": NewCommand(
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"toggle debugging",
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@@ -89,8 +88,10 @@ func (c *Calc) SetCommands() {
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},
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),
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}
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}
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c.ShowCommands = Commands{
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func (c *Calc) SetShowCommands() Commands {
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return Commands{
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// Display commands
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"dump": NewCommand(
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"display the stack contents",
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@@ -131,8 +132,10 @@ func (c *Calc) SetCommands() {
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},
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),
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}
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}
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c.StackCommands = Commands{
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func (c *Calc) SetStackCommands() Commands {
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return Commands{
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"clear": NewCommand(
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"clear the whole stack",
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func(c *Calc) {
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@@ -159,14 +162,7 @@ func (c *Calc) SetCommands() {
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"swap": NewCommand(
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"exchange the last two elements",
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func(c *Calc) {
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if c.stack.Len() < 2 {
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fmt.Println("stack too small, can't swap")
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} else {
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c.stack.Backup()
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c.stack.Swap()
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}
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},
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CommandSwap,
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),
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"undo": NewCommand(
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@@ -178,113 +174,21 @@ func (c *Calc) SetCommands() {
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"dup": NewCommand(
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"duplicate last stack item",
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func(c *Calc) {
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item := c.stack.Last()
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if len(item) == 1 {
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c.stack.Backup()
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c.stack.Push(item[0])
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} else {
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fmt.Println("stack empty")
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}
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},
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CommandDup,
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),
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"edit": NewCommand(
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"edit the stack interactively",
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func(c *Calc) {
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if c.stack.Len() == 0 {
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fmt.Println("empty stack")
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return
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}
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c.stack.Backup()
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// put the stack contents into a tmp file
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tmp, err := os.CreateTemp("", "stack")
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if err != nil {
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fmt.Println(err)
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return
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}
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defer os.Remove(tmp.Name())
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comment := `# add or remove numbers as you wish.
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# each number must be on its own line.
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# numbers must be floating point formatted.
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`
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_, err = tmp.WriteString(comment)
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if err != nil {
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fmt.Println(err)
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return
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}
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for _, item := range c.stack.All() {
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_, err = fmt.Fprintf(tmp, "%f\n", item)
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if err != nil {
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fmt.Println(err)
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return
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}
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}
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tmp.Close()
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// determine which editor to use
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editor := "vi"
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enveditor, present := os.LookupEnv("EDITOR")
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if present {
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if editor != "" {
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if _, err := os.Stat(editor); err == nil {
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editor = enveditor
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}
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}
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}
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// execute editor with our tmp file containing current stack
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cmd := exec.Command(editor, tmp.Name())
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cmd.Stdin = os.Stdin
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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err = cmd.Run()
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if err != nil {
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fmt.Println("could not run editor command: ", err)
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return
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}
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// read the file back in
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modified, err := os.Open(tmp.Name())
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if err != nil {
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fmt.Println("Error opening file:", err)
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return
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}
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defer modified.Close()
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// reset the stack
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c.stack.Clear()
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// and put the new contents (if legit) back onto the stack
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scanner := bufio.NewScanner(modified)
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for scanner.Scan() {
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line := strings.TrimSpace(c.Comment.ReplaceAllString(scanner.Text(), ""))
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if line == "" {
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continue
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}
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num, err := strconv.ParseFloat(line, 64)
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if err != nil {
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fmt.Printf("%s is not a floating point number!\n", line)
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continue
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}
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c.stack.Push(num)
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}
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if err := scanner.Err(); err != nil {
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fmt.Println("Error reading from file:", err)
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}
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},
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CommandEdit,
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),
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}
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}
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// define all management (that is: non calculation) commands
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func (c *Calc) SetCommands() {
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c.SettingsCommands = c.SetSettingsCommands()
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c.ShowCommands = c.SetShowCommands()
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c.StackCommands = c.SetStackCommands()
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// general commands
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c.Commands = Commands{
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@@ -317,3 +221,126 @@ func (c *Calc) SetCommands() {
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c.StackCommands["c"] = c.StackCommands["clear"]
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c.StackCommands["u"] = c.StackCommands["undo"]
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}
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// added to the command map:
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func CommandSwap(c *Calc) {
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if c.stack.Len() < 2 {
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fmt.Println("stack too small, can't swap")
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} else {
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c.stack.Backup()
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c.stack.Swap()
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}
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}
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func CommandDup(c *Calc) {
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item := c.stack.Last()
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if len(item) == 1 {
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c.stack.Backup()
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c.stack.Push(item[0])
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} else {
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fmt.Println("stack empty")
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}
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}
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func CommandEdit(calc *Calc) {
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if calc.stack.Len() == 0 {
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fmt.Println("empty stack")
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return
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}
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calc.stack.Backup()
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// put the stack contents into a tmp file
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tmp, err := os.CreateTemp("", "stack")
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if err != nil {
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fmt.Println(err)
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return
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}
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defer os.Remove(tmp.Name())
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comment := `# add or remove numbers as you wish.
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# each number must be on its own line.
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# numbers must be floating point formatted.
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`
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_, err = tmp.WriteString(comment)
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if err != nil {
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fmt.Println(err)
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return
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}
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for _, item := range calc.stack.All() {
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_, err = fmt.Fprintf(tmp, "%f\n", item)
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if err != nil {
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fmt.Println(err)
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return
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}
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}
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tmp.Close()
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// determine which editor to use
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editor := "vi"
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enveditor, present := os.LookupEnv("EDITOR")
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if present {
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if editor != "" {
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if _, err := os.Stat(editor); err == nil {
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editor = enveditor
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}
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}
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}
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// execute editor with our tmp file containing current stack
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cmd := exec.Command(editor, tmp.Name())
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cmd.Stdin = os.Stdin
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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err = cmd.Run()
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if err != nil {
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fmt.Println("could not run editor command: ", err)
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return
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}
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// read the file back in
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modified, err := os.Open(tmp.Name())
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if err != nil {
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fmt.Println("Error opening file:", err)
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return
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}
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defer modified.Close()
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// reset the stack
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calc.stack.Clear()
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// and put the new contents (if legit) back onto the stack
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scanner := bufio.NewScanner(modified)
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for scanner.Scan() {
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line := strings.TrimSpace(calc.Comment.ReplaceAllString(scanner.Text(), ""))
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if line == "" {
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continue
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}
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num, err := strconv.ParseFloat(line, 64)
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if err != nil {
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fmt.Printf("%s is not a floating point number!\n", line)
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continue
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}
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calc.stack.Push(num)
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}
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if err := scanner.Err(); err != nil {
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fmt.Println("Error reading from file:", err)
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}
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}
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