67 lines
1.8 KiB
Go
67 lines
1.8 KiB
Go
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/* SHS: Syntactically Homogeneous Shell
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* Copyright (C) 2019 Aidan Hahn
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package config
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import (
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"os"
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"io"
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"bufio"
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"gitlab.com/whom/shs/log"
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"gitlab.com/whom/shs/ast"
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"gitlab.com/whom/shs/stdlib"
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)
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func InitFromConfig(configFile string) (ast.VarTable, ast.FuncTable) {
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funcs := stdlib.GenFuncTable()
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vars := &map[string]*ast.Token{}
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ast.InitVarTable(vars)
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p := ast.GetVar("HOME", vars)
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configFile = p.Value() + "/" + configFile
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cfile, err := os.Open(configFile)
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if err != nil {
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log.Log(log.DEBUG,
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"unable to open config file: " + err.Error(),
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"config")
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return vars, funcs
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}
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r := bufio.NewReader(cfile)
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text, err := r.ReadString('\n')
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for err != io.EOF {
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if err != nil {
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log.Log(log.ERR,
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"unable to read from config file: " + err.Error(),
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"config")
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break
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}
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// Eval lines in config
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ast.Lex(text).Eval(funcs, vars, false)
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text, err = r.ReadString('\n')
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}
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log.Log(log.DEBUG,
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"config file fully evaluated",
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"config")
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cfile.Close()
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return vars, funcs
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}
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