Hilbish/aliases.go

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package main
import (
"strings"
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"sync"
"github.com/yuin/gopher-lua"
)
var aliases *aliasHandler
type aliasHandler struct {
aliases map[string]string
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mu *sync.RWMutex
}
// initialize aliases map
func newAliases() *aliasHandler {
return &aliasHandler{
aliases: make(map[string]string),
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mu: &sync.RWMutex{},
}
}
func (a *aliasHandler) Add(alias, cmd string) {
a.mu.Lock()
defer a.mu.Unlock()
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a.aliases[alias] = cmd
}
func (a *aliasHandler) All() map[string]string {
return a.aliases
}
func (a *aliasHandler) Delete(alias string) {
a.mu.Lock()
defer a.mu.Unlock()
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delete(a.aliases, alias)
}
func (a *aliasHandler) Resolve(cmdstr string) string {
a.mu.RLock()
defer a.mu.RUnlock()
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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
func (a *aliasHandler) Loader(L *lua.LState) *lua.LTable {
// create a lua module with our functions
hshaliasesLua := map[string]lua.LGFunction{
"add": a.luaAdd,
"list": a.luaList,
"del": a.luaDelete,
}
mod := L.SetFuncs(L.NewTable(), hshaliasesLua)
return mod
}
func (a *aliasHandler) luaAdd(L *lua.LState) int {
alias := L.CheckString(1)
cmd := L.CheckString(2)
a.Add(alias, cmd)
return 0
}
func (a *aliasHandler) luaList(L *lua.LState) int {
aliasesList := L.NewTable()
for k, v := range a.All() {
aliasesList.RawSetString(k, lua.LString(v))
}
L.Push(aliasesList)
return 1
}
func (a *aliasHandler) luaDelete(L *lua.LState) int {
alias := L.CheckString(1)
a.Delete(alias)
return 0
}