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Hilbish/aliases.go

141 lines
2.9 KiB

package main
import (
"strings"
"sync"
"hilbish/util"
rt "github.com/arnodel/golua/runtime"
)
var aliases *aliasModule
type aliasModule struct {
aliases map[string]string
mu *sync.RWMutex
}
// initialize aliases map
func newAliases() *aliasModule {
return &aliasModule{
aliases: make(map[string]string),
mu: &sync.RWMutex{},
}
}
func (a *aliasModule) Add(alias, cmd string) {
a.mu.Lock()
defer a.mu.Unlock()
a.aliases[alias] = cmd
}
func (a *aliasModule) All() map[string]string {
return a.aliases
}
func (a *aliasModule) Delete(alias string) {
a.mu.Lock()
defer a.mu.Unlock()
delete(a.aliases, alias)
}
func (a *aliasModule) Resolve(cmdstr string) string {
a.mu.RLock()
defer a.mu.RUnlock()
args := strings.Split(cmdstr, " ")
for a.aliases[args[0]] != "" {
alias := a.aliases[args[0]]
cmdstr = alias + strings.TrimPrefix(cmdstr, args[0])
cmdArgs, _ := splitInput(cmdstr)
args = cmdArgs
if a.aliases[args[0]] == alias {
break
}
if a.aliases[args[0]] != "" {
continue
}
}
return cmdstr
}
// lua section
// #interface aliases
// command aliasing
// The alias interface deals with all command aliases in Hilbish.
func (a *aliasModule) Loader(rtm *rt.Runtime) *rt.Table {
// create a lua module with our functions
hshaliasesLua := map[string]util.LuaExport{
"add": util.LuaExport{hlalias, 2, false},
"list": util.LuaExport{a.luaList, 0, false},
"del": util.LuaExport{a.luaDelete, 1, false},
"resolve": util.LuaExport{a.luaResolve, 1, false},
}
mod := rt.NewTable()
util.SetExports(rtm, mod, hshaliasesLua)
return mod
}
// #interface aliases
// add(alias, cmd)
// This is an alias (ha) for the `hilbish.alias` function.
// --- @param alias string
// --- @param cmd string
func _hlalias() {}
// #interface aliases
// list() -> table<string, string>
// Get a table of all aliases, with string keys as the alias and the value as the command.
// --- @returns table<string, string>
func (a *aliasModule) luaList(t *rt.Thread, c *rt.GoCont) (rt.Cont, error) {
aliasesList := rt.NewTable()
for k, v := range a.All() {
aliasesList.Set(rt.StringValue(k), rt.StringValue(v))
}
return c.PushingNext1(t.Runtime, rt.TableValue(aliasesList)), nil
}
// #interface aliases
// delete(name)
// Removes an alias.
// --- @param name string
func (a *aliasModule) luaDelete(t *rt.Thread, c *rt.GoCont) (rt.Cont, error) {
if err := c.Check1Arg(); err != nil {
return nil, err
}
alias, err := c.StringArg(0)
if err != nil {
return nil, err
}
a.Delete(alias)
return c.Next(), nil
}
// #interface aliases
// resolve(alias) -> command (string)
// Tries to resolve an alias to its command.
// --- @param alias string
// --- @returns string
func (a *aliasModule) luaResolve(t *rt.Thread, c *rt.GoCont) (rt.Cont, error) {
if err := c.Check1Arg(); err != nil {
return nil, err
}
alias, err := c.StringArg(0)
if err != nil {
return nil, err
}
resolved := a.Resolve(alias)
return c.PushingNext1(t.Runtime, rt.StringValue(resolved)), nil
}