first commit

1 files changed, 124 insertions, 0 deletions

diff --git a/commands.go b/commands.go
new file mode 100644
index 0000000..023a112
--- /dev/null
+++ b/commands.go
@@ -0,0 +1,124 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"strings"
+)
+
+type CommandFunc func(args string)
+
+var poecmds map[string]CommandFunc
+
+func InitCommands() {
+	poecmds = map[string]CommandFunc{
+		"Exit":   CmdExit,
+		"New":    CmdNew,
+		"Del":    CmdDel,
+		"Edit":   CmdEdit,
+		"Newcol": CmdNewcol,
+	}
+}
+
+func RunCommand(input string) {
+	if input == "" {
+		return
+	}
+
+	input = strings.Trim(input, "\t\n ")
+
+	// check poe default commands
+	cmd := strings.Split(string(input), " ")
+	if fn, ok := poecmds[cmd[0]]; ok {
+		fn(strings.TrimPrefix(input, cmd[0]))
+		return
+	}
+
+	// Edit shortcuts for external commands and piping
+	switch input[0] {
+	case '!':
+		fallthrough
+	case '<':
+		fallthrough
+	case '>':
+		fallthrough
+	case '|':
+		CmdEdit(input)
+	}
+}
+
+func CmdExit(args string) {
+	ok := true
+	for _, win := range AllWindows() {
+		if !win.CanClose() {
+			ok = false
+		}
+	}
+	if ok {
+		quit <- true
+	}
+}
+
+func CmdNewcol(args string) {
+	screen.Clear()
+	screen.Sync()
+	workspace.AddCol()
+	CmdNew("")
+}
+
+func CmdNew(args string) {
+	screen.Clear()
+	win := NewWindow(FnEmptyWin)
+	workspace.LastCol().AddWindow(win)
+}
+
+func CmdOpen(fn string) {
+	screen.Clear()
+	var win *Window
+	win = FindWindow(fn)
+	if win == nil { // only load windows that do no already exists
+		win := NewWindow(fn)
+		workspace.LastCol().AddWindow(win)
+		win.LoadBuffer()
+	}
+}
+
+func CmdDel(args string) {
+	CurWin.Close()
+}
+
+func CmdEdit(args string) {
+	if len(args) < 2 {
+		return
+	}
+
+	switch args[0] {
+	case 'f':
+		var names []string
+		for _, win := range AllWindows() {
+			names = append(names, fmt.Sprintf("  %3s %s", win.Flags(), win.Name()))
+		}
+		printMsg("buffers:\n%s\n", strings.Join(names, "\n"))
+	case '!':
+		os.Chdir(CurWin.Dir())
+		cmd := strings.Split(string(args[1:]), " ")
+		path, err := exec.LookPath(cmd[0])
+		if err != nil { // path not found, break with silence
+			//printMsg("path not found: %s\n", cmd[0])
+			break
+		}
+		out, err := exec.Command(path, cmd[1:]...).Output()
+		if err != nil {
+			printMsg("error: %s\n", err)
+			break
+		}
+		// if command produced output, print it
+		outstr := string(out)
+		if outstr != "" {
+			printMsg("%s\n", outstr)
+		}
+	default:
+		printMsg("?\n")
+	}
+}