101 lines
2.4 KiB
Go
101 lines
2.4 KiB
Go
package moon
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import (
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"encoding/json"
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"fmt"
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"os"
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"path/filepath"
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"strings"
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"github.com/hjson/hjson-go"
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"go.uber.org/zap/zapcore"
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)
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// parseConfig разбирает и валидирует даденный конфиг.
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func ParseConfig(path string) (MyConfig, error) {
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fileInfo, err := os.Stat(path)
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// Assume that no such file or directory error occurs.
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if err != nil {
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return MyConfig{}, fmt.Errorf("unable to find config: %w", err)
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}
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// Config file looks too long for config.
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if fileInfo.Size() > 65535 {
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err := fmt.Errorf("config file %s is too long for config, skipping", path) //nolint: err113
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return MyConfig{}, err
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}
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buf, err := os.ReadFile(path)
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// Noluck reading file.
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if err != nil {
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return MyConfig{}, err
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}
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/*
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* According to docs hjson kinda can patse quirky json, but unmarshalls it to map. *
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* Struct on output look more interesting: so we unmarshall config to map, then mashall back to json and then *
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* unmarshall it via ecodinf/json to struct. Not very effective way but we do this not too often. *
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*/
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var (
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sampleConfig MyConfig
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tmp map[string]any
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)
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err = hjson.Unmarshal(buf, &tmp)
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// Не удалось распарсить.
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if err != nil {
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return MyConfig{}, err
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}
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tmpjson, err := json.Marshal(tmp)
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// Не удалось преобразовать map-ку в json.
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if err != nil {
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return MyConfig{}, err
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}
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if err := json.Unmarshal(tmpjson, &sampleConfig); err != nil {
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return MyConfig{}, err
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}
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if sampleConfig.Token == "" {
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return MyConfig{}, fmt.Errorf("token field in config file %s must be set", path) //nolint: err113
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}
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if _, err := zapcore.ParseLevel(sampleConfig.LogLevel); err != nil {
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sampleConfig.LogLevel = "info"
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}
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// sampleConfig.Log = "" if not set
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if sampleConfig.CSign == "" {
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err := fmt.Errorf("csign field in config file %s must be set", path) //nolint: err113
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return MyConfig{}, err
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}
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if sampleConfig.DataDir == "" {
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return MyConfig{}, fmt.Errorf("data_dir field in config file %s must be set", path) //nolint: err113
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}
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if strings.Split(sampleConfig.DataDir, "")[0] != "/" {
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executablePath, err := os.Executable()
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if err != nil {
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err := fmt.Errorf("unable to get current executable path: %w", err)
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return MyConfig{}, err
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}
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sampleConfig.DataDir = fmt.Sprintf("%s/%s", filepath.Dir(executablePath), sampleConfig.DataDir)
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}
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return sampleConfig, err
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}
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/* vim: set ft=go noet ai ts=4 sw=4 sts=4: */
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