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- Check LLGoROOT/crosscompile/wasi-libc first before downloading - Fallback to cached wasi-sdk download if not found locally - Update downloadAndExtract to return wasiSdkRoot path directly 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
111 lines
2.5 KiB
Go
111 lines
2.5 KiB
Go
package crosscompile
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import (
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"archive/tar"
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"compress/gzip"
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"fmt"
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"io"
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"net/http"
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"os"
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"path/filepath"
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"strings"
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)
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func downloadAndExtract(url, dir string) (wasiSdkRoot string, err error) {
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if _, err = os.Stat(dir); err == nil {
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os.RemoveAll(dir)
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}
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tempDir := dir + ".temp"
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os.RemoveAll(tempDir)
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if err := os.MkdirAll(tempDir, 0755); err != nil {
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return "", fmt.Errorf("failed to create temporary directory: %w", err)
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}
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urlPath := strings.Split(url, "/")
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filename := urlPath[len(urlPath)-1]
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localFile := filepath.Join(tempDir, filename)
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if err = downloadFile(url, localFile); err != nil {
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return "", fmt.Errorf("failed to download file: %w", err)
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}
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defer os.Remove(localFile)
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if strings.HasSuffix(filename, ".tar.gz") || strings.HasSuffix(filename, ".tgz") {
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err = extractTarGz(localFile, tempDir)
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} else {
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return "", fmt.Errorf("unsupported archive format: %s", filename)
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}
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if err != nil {
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return "", fmt.Errorf("failed to extract archive: %w", err)
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}
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if err = os.Rename(tempDir, dir); err != nil {
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return "", fmt.Errorf("failed to rename directory: %w", err)
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}
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wasiSdkRoot = filepath.Join(dir, "wasi-sdk-25.0-x86_64-macos")
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return
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}
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func downloadFile(url, filepath string) error {
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out, err := os.Create(filepath)
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if err != nil {
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return err
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}
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defer out.Close()
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resp, err := http.Get(url)
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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return fmt.Errorf("bad status: %s", resp.Status)
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}
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_, err = io.Copy(out, resp.Body)
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return err
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}
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func extractTarGz(tarGzFile, dest string) error {
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file, err := os.Open(tarGzFile)
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if err != nil {
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return err
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}
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defer file.Close()
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gzr, err := gzip.NewReader(file)
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if err != nil {
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return err
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}
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defer gzr.Close()
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tr := tar.NewReader(gzr)
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for {
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header, err := tr.Next()
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if err == io.EOF {
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break
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}
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if err != nil {
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return err
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}
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target := filepath.Join(dest, header.Name)
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if !strings.HasPrefix(target, filepath.Clean(dest)+string(os.PathSeparator)) {
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return fmt.Errorf("%s: illegal file path", target)
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}
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switch header.Typeflag {
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case tar.TypeDir:
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if err := os.MkdirAll(target, 0755); err != nil {
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return err
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}
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case tar.TypeReg:
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if err := os.MkdirAll(filepath.Dir(target), 0755); err != nil {
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return err
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}
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f, err := os.OpenFile(target, os.O_CREATE|os.O_RDWR, os.FileMode(header.Mode))
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if err != nil {
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return err
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}
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if _, err := io.Copy(f, tr); err != nil {
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f.Close()
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return err
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}
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f.Close()
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}
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}
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return nil
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}
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