Hilbish/golibs/fs/fs.go

105 lines
2.0 KiB
Go

// The fs module provides easy and simple access to filesystem functions and other
// things, and acts an addition to the Lua standard library's I/O and fs functions.
package fs
import (
"fmt"
"os"
"strings"
"hilbish/util"
"github.com/yuin/gopher-lua"
"layeh.com/gopher-luar"
)
func Loader(L *lua.LState) int {
mod := L.SetFuncs(L.NewTable(), exports)
util.Document(L, mod, `The fs module provides easy and simple access to filesystem functions and other
things, and acts an addition to the Lua standard library's I/O and fs functions.`)
L.Push(mod)
return 1
}
func luaErr(L *lua.LState, msg string) {
L.Error(lua.LString(msg), 2)
}
var exports = map[string]lua.LGFunction{
"cd": fcd,
"mkdir": fmkdir,
"stat": fstat,
"readdir": freaddir,
}
// cd(dir)
// Changes directory to `dir`
func fcd(L *lua.LState) int {
path := L.CheckString(1)
err := os.Chdir(strings.TrimSpace(path))
if err != nil {
e := err.(*os.PathError).Err.Error()
luaErr(L, e)
}
return 0
}
// mkdir(name, recursive)
// Makes a directory called `name`. If `recursive` is true, it will create its parent directories.
func fmkdir(L *lua.LState) int {
dirname := L.CheckString(1)
recursive := L.ToBool(2)
path := strings.TrimSpace(dirname)
var err error
if recursive {
err = os.MkdirAll(path, 0744)
} else {
err = os.Mkdir(path, 0744)
}
if err != nil {
luaErr(L, err.Error())
}
return 0
}
// stat(path)
// Returns info about `path`
func fstat(L *lua.LState) int {
path := L.CheckString(1)
// TODO: handle error here
pathinfo, err := os.Stat(path)
if err != nil {
luaErr(L, err.Error())
return 0
}
L.Push(luar.New(L, pathinfo))
return 1
}
// readdir(dir)
// Returns a table of files in `dir`
func freaddir(L *lua.LState) int {
dir := L.CheckString(1)
names := []string{}
dirEntries, err := os.ReadDir(dir)
if err != nil {
luaErr(L, err.Error())
return 0
}
for _, entry := range dirEntries {
names = append(names, entry.Name())
}
L.Push(luar.New(L, names))
return 1
}