catch SIGTERM meant for running process

cmd/repl.go

@@ -1,110 +0,0 @@
-/*   SHS: Syntactically Homogeneous Shell
- *   Copyright (C) 2019  Aidan Hahn
- *
- *   This program is free software: you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License as published by
- *   the Free Software Foundation, either version 3 of the License, or
- *   (at your option) any later version.
- *
- *   This program is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *   GNU General Public License for more details.
- *
- *   You should have received a copy of the GNU General Public License
- *   along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-package main
-
-import (
-    "os"
-    "fmt"
-    "strconv"
-    "github.com/chzyer/readline"
-    "git.callpipe.com/aidan/shs/ast"
-    "git.callpipe.com/aidan/shs/log"
-    "git.callpipe.com/aidan/shs/stdlib"
-)
-
-const (
-    def_prompt  string = "λ "
-)
-
-func setLogLvl() {
-    loglvl := os.Getenv("SH_LOGGING")
-    if loglvl != "" {
-        llvl, err := strconv.ParseInt(loglvl, 10, 8)
-        if err != nil {
-            log.Log(log.ERR,
-            "couldnt parse log level: " + err.Error(),
-                    "init")
-        } else {
-            log.SetLogLvl(llvl)
-        }
-    }
-}
-
-func main() {
-    debug  := os.Getenv("SH_DEBUG_MODE")
-    hist   := os.Getenv("SH_HIST_FILE")
-    prompt := os.Getenv("SHS_SH_PROMPT")
-
-    var vars ast.VarTable
-    var funcs ast.FuncTable
-
-    funcs = stdlib.GenFuncTable()
-    vars = &map[string]*ast.Token{}
-    ast.InitVarTable(vars)
-    ast.SyncTablesWithOSEnviron = true
-
-    var err error
-
-    if prompt == "" {
-        prompt = def_prompt
-    }
-
-    rl, err := readline.NewEx(&readline.Config{
-        Prompt: prompt,
-        HistoryFile: hist,
-        InterruptPrompt: "^C",
-    })
-
-    defer rl.Close()
-    if err != nil {
-        log.Log(log.ERR, "Couldnt initialize readline: " + err.Error(), "repl")
-        return
-    }
-
-    for {
-        setLogLvl()
-        text, err := rl.Readline()
-        if err != nil {
-            log.Log(log.ERR, "couldnt read user input: " + err.Error(), "repl")
-        }
-
-        userInput := ast.Lex(text)
-        if userInput == nil {
-            // errors handled in Lex
-            // TODO: return an error instead
-            continue
-        }
-
-        if debug != "" {
-            ast.PrintSExprsIndividually(userInput)
-        }
-
-        result, unwrap := userInput.Eval(funcs, vars)
-        if result != nil {
-            if result.Tag == ast.LIST && unwrap {
-                result = result.Inner.(*ast.Token)
-            }
-
-            for i := result; i != nil; i = i.Next {
-                fmt.Printf(i.String() + " ")
-            }
-        }
-
-        fmt.Printf("\n")
-    }
-}