90 lines
2.1 KiB
Go
90 lines
2.1 KiB
Go
/*
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* Copyright (C) 2020-2022, IrineSistiana
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*
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* This file is part of mosdns.
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*
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* mosdns 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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* mosdns 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 sequence
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import "strings"
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type RuleArgs struct {
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Matches []string `yaml:"matches"`
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Exec string `yaml:"exec"`
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}
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func parseArgs(ra RuleArgs) RuleConfig {
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var rc RuleConfig
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for _, s := range ra.Matches {
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rc.Matches = append(rc.Matches, parseMatch(s))
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}
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tag, typ, args := parseExec(ra.Exec)
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rc.Tag = tag
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rc.Type = typ
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rc.Args = args
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return rc
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}
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func parseMatch(s string) MatchConfig {
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var mc MatchConfig
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s = strings.TrimSpace(s)
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s, reverse := trimPrefixField(s, "!")
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mc.Reverse = reverse
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p, args, _ := strings.Cut(s, " ")
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args = strings.TrimSpace(args)
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mc.Args = args
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if tag, ok := trimPrefixField(p, "$"); ok {
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mc.Tag = tag
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} else {
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mc.Type = p
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}
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return mc
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}
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func parseExec(s string) (tag string, typ string, args string) {
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s = strings.TrimSpace(s)
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p, args, _ := strings.Cut(s, " ")
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args = strings.TrimSpace(args)
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p, ok := trimPrefixField(p, "$")
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if ok {
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tag = p
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} else {
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typ = p
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}
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return
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}
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type RuleConfig struct {
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Matches []MatchConfig `yaml:"matches"`
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Tag string `yaml:"tag"`
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Type string `yaml:"type"`
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Args string `yaml:"args"`
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}
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type MatchConfig struct {
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Tag string `yaml:"tag"`
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Type string `yaml:"type"`
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Args string `yaml:"args"`
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Reverse bool `yaml:"reverse"`
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}
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func trimPrefixField(s, p string) (string, bool) {
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if strings.HasPrefix(s, p) {
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return strings.TrimSpace(strings.TrimPrefix(s, p)), true
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}
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return s, false
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}
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