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Merge pull request #16 from msoap/gomod_fixes
Added Go modules support
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "io" | ||
| "log" | ||
| "os" | ||
| "os/exec" | ||
| "path" | ||
| "strings" | ||
|
|
||
| "github.com/msoap/byline" | ||
| ) | ||
|
|
||
| var goModFilename *string | ||
|
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| func getGoModFilename() string { | ||
| if goModFilename != nil { | ||
| return *goModFilename | ||
| } | ||
|
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| file := "" | ||
| out, err := exec.Command("go", "env", "GOMOD").Output() | ||
| if err != nil { | ||
| log.Printf("failed to load 'go env GOMOD' content: %s", err) | ||
| goModFilename = &file | ||
| return "" | ||
| } | ||
|
|
||
| file = strings.TrimSpace(string(out)) | ||
| goModFilename = &file | ||
|
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| return file | ||
| } | ||
|
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| func guessAbsPathInGoMod(relPath string) (string, error) { | ||
| modFilename := getGoModFilename() | ||
| if modFilename == "" { | ||
| return "", errIsNotInGoMod | ||
| } | ||
|
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| modFile, err := os.Open(modFilename) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| defer func() { | ||
| if err := modFile.Close(); err != nil { | ||
| log.Printf("failed to close %s file: %s", modFilename, err) | ||
| } | ||
| }() | ||
|
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| moduleName := "" | ||
| if err := byline.NewReader(modFile).AWKMode(func(line string, fields []string, vars byline.AWKVars) (string, error) { | ||
| if vars.NF == 2 && fields[0] == "module" && fields[1] != "" { | ||
| moduleName = fields[1] | ||
| return "", io.EOF | ||
| } | ||
|
|
||
| return "", nil | ||
| }).Discard(); err != nil { | ||
| return "", err | ||
| } | ||
| if moduleName == "" { | ||
| return "", errIsNotInGoMod | ||
| } | ||
|
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| absPath := path.Dir(modFilename) + strings.TrimPrefix(relPath, moduleName) | ||
| if stat, err := os.Stat(absPath); err != nil { | ||
| return "", err | ||
| } else if !stat.Mode().IsRegular() { | ||
| return "", fmt.Errorf("%s is not regular file", absPath) | ||
| } | ||
|
|
||
| return absPath, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "os" | ||
| "testing" | ||
| ) | ||
|
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| func Test_guessAbsPathInGoMod(t *testing.T) { | ||
| if err := os.Setenv("GO111MODULE", "on"); err != nil { | ||
| t.Fatalf("failed to set env: %s", err) | ||
| } | ||
|
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| t.Run("empty", func(t *testing.T) { | ||
| if _, err := guessAbsPathInGoMod(""); err == nil { | ||
| t.Errorf("failed to test empty file") | ||
| } | ||
| }) | ||
|
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| t.Run("real", func(t *testing.T) { | ||
| gotAbsPath, err := guessAbsPathInGoMod("github.com/msoap/go-carpet/terminal_posix.go") | ||
| if err != nil { | ||
| t.Errorf("failed to test real file: %s", err) | ||
| } | ||
|
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| if _, err := os.Stat(gotAbsPath); err != nil { | ||
| t.Errorf("failed to test real file: %s", err) | ||
| } | ||
| }) | ||
|
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| t.Run("not exists", func(t *testing.T) { | ||
| _, err := guessAbsPathInGoMod("github.com/msoap/go-carpet/terminal_posix_another_file.go") | ||
| if err == nil { | ||
| t.Errorf("failed to test not exists file") | ||
| } | ||
| }) | ||
| } |