Function FindStringWithContext

utils.go:562–610

查找文件内容中目标字符串附近的上下文.

(filename string, str string)

// 查找文件内容中目标字符串附近的上下文.
func FindStringWithContext(filename string, str string) ([]string, error) {
	file, err := os.Open(filename)
	if err != nil {
		return nil, err
	}
	defer file.Close()

	var results []string
	scanner := bufio.NewScanner(file)
	lineNumber := 0

	for scanner.Scan() {
		line := scanner.Text()
		lineNumber++
		index := strings.Index(line, str)
		if index == -1 {
			continue
		}

		// 转换为 rune 切片以处理多字节字符.
		runes := []rune(line)
		subRunes := []rune(str)
		runesLen := len(runes)
		subLen := len(subRunes)

		// 遍历所有匹配位置.
		for i := 0; i <= runesLen - subLen; i++ {
			match := true
			for j := 0; j < subLen; j++ {
				if runes[i + j] != subRunes[j] {
					match = false
					break
				}
			}
			if match {
				start := max(0, i - 15)
				end := min(runesLen, i + subLen + 15)
				context := string(runes[start:end])
				results = append(results, context)
				i = i + subLen - 1 // 跳过已匹配部分.
			}
		}
	}

	if err := scanner.Err(); err != nil {
		return nil, err
	}
	return results, nil
}


func SearchFile(selected_file FILE_SEARCH) []map[string]string {