ini.go

package ipcheck

import (
	"bufio"
	"bytes"
	"fmt"
	"os"
	"strings"
)

func parseINIFile(path string) (map[string]map[string]string, error) {
	data, err := os.ReadFile(path)
	if err != nil {
		return nil, err
	}
	return parseINI(data), nil
}

func parseINI(data []byte) map[string]map[string]string {
	res := map[string]map[string]string{}
	section := "default"
	res[section] = map[string]string{}
	scanner := bufio.NewScanner(bytes.NewReader(data))
	for scanner.Scan() {
		line := strings.TrimSpace(scanner.Text())
		if line == "" || strings.HasPrefix(line, "#") || strings.HasPrefix(line, ";") {
			continue
		}
		if strings.HasPrefix(line, "[") && strings.HasSuffix(line, "]") {
			section = strings.TrimSpace(line[1 : len(line)-1])
			if _, ok := res[section]; !ok {
				res[section] = map[string]string{}
			}
			continue
		}
		idx := strings.Index(line, "=")
		if idx < 0 {
			continue
		}
		key := strings.TrimSpace(line[:idx])
		val := strings.TrimSpace(line[idx+1:])
		res[section][key] = val
	}
	return res
}

func writeIfMissing(path, content string) (bool, error) {
	if _, err := os.Stat(path); err == nil {
		return false, nil
	}
	if err := os.WriteFile(path, []byte(content), 0o644); err != nil {
		return false, err
	}
	return true, nil
}

func printFile(path string) error {
	data, err := os.ReadFile(path)
	if err != nil {
		return err
	}
	fmt.Print(string(data))
	return nil
}