110 lines
3.0 KiB
Go
110 lines
3.0 KiB
Go
package main
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import (
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"bytes"
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"compress/gzip"
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"fmt"
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"io"
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"regexp"
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"strings"
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)
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// GitHub URL正则表达式
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var githubRegex = regexp.MustCompile(`https?://(?:github\.com|raw\.githubusercontent\.com|raw\.github\.com|gist\.githubusercontent\.com|gist\.github\.com|api\.github\.com)[^\s'"]+`)
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// ProcessSmart Shell脚本智能处理函数
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func ProcessSmart(input io.ReadCloser, isCompressed bool, host string) (io.Reader, int64, error) {
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defer input.Close()
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// 读取Shell脚本内容
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content, err := readShellContent(input, isCompressed)
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if err != nil {
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return nil, 0, fmt.Errorf("内容读取失败: %v", err)
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}
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if len(content) == 0 {
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return strings.NewReader(""), 0, nil
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}
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// Shell脚本大小检查 (10MB限制)
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if len(content) > 10*1024*1024 {
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return strings.NewReader(content), int64(len(content)), nil
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}
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// 快速检查是否包含GitHub URL
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if !strings.Contains(content, "github.com") && !strings.Contains(content, "githubusercontent.com") {
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return strings.NewReader(content), int64(len(content)), nil
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}
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// 执行GitHub URL替换
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processed := processGitHubURLs(content, host)
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return strings.NewReader(processed), int64(len(processed)), nil
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}
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// readShellContent 读取Shell脚本内容
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func readShellContent(input io.ReadCloser, isCompressed bool) (string, error) {
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var reader io.Reader = input
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// 处理gzip压缩
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if isCompressed {
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// 读取前2字节检查gzip魔数
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peek := make([]byte, 2)
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n, err := input.Read(peek)
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if err != nil && err != io.EOF {
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return "", fmt.Errorf("读取数据失败: %v", err)
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}
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// 检查gzip魔数 (0x1f, 0x8b)
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if n >= 2 && peek[0] == 0x1f && peek[1] == 0x8b {
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// 合并peek数据和剩余流
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combinedReader := io.MultiReader(bytes.NewReader(peek[:n]), input)
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gzReader, err := gzip.NewReader(combinedReader)
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if err != nil {
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return "", fmt.Errorf("gzip解压失败: %v", err)
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}
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defer gzReader.Close()
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reader = gzReader
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} else {
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// 不是gzip格式，合并peek数据
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reader = io.MultiReader(bytes.NewReader(peek[:n]), input)
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}
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}
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// 读取全部内容
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data, err := io.ReadAll(reader)
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if err != nil {
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return "", fmt.Errorf("读取内容失败: %v", err)
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}
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return string(data), nil
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}
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// processGitHubURLs 处理GitHub URL替换
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func processGitHubURLs(content, host string) string {
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return githubRegex.ReplaceAllStringFunc(content, func(url string) string {
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return transformURL(url, host)
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})
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}
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// transformURL URL转换函数
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func transformURL(url, host string) string {
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// 避免重复处理
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if strings.Contains(url, host) {
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return url
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}
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// 协议标准化为https
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if strings.HasPrefix(url, "http://") {
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url = "https" + url[4:]
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} else if !strings.HasPrefix(url, "https://") && !strings.HasPrefix(url, "//") {
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url = "https://" + url
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}
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// 清理host格式
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cleanHost := strings.TrimPrefix(host, "https://")
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cleanHost = strings.TrimPrefix(cleanHost, "http://")
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cleanHost = strings.TrimSuffix(cleanHost, "/")
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return cleanHost + "/" + url
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} |