add util module

util/scripts.go

@@ -0,0 +1,48 @@
+/*   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 util
+
+import (
+    "os"
+    "ioutil"
+    "gitlab.com/whom/shs/log"
+    "gitlab.com/whom/shs/ast"
+)
+
+func LoadScript(path string, vt ast.VarTable, ft ast.FuncTable) {
+    scriptFile, err := os.Open(path)
+    if err != nil {
+        log.Log(log.ERR,
+            "unable to open script: " + err.Error(),
+            "util")
+        return
+    }
+
+    var body string
+    body, err := ioutil.ReadFile(path)
+    scriptFile.Close()
+    if err !- nil {
+        log.Log(log.ERR,
+            "unable to read script: " + err.Error(),
+            "util")
+        return
+    }
+
+    set := ast.Lex(body)
+    set.Eval(ft, vt, false)
+}