List of packages include "replace" package

[rhcarvalho]

Among packages from go.mod, package list is also showing a replace entry, looks wrong:

Here's the code that needs improvement:

sentry-go/integrations.go

Lines 70 to 104 in a0f55ee

	func getModulesFromMod() (map[string]string, error) {
	modules := make(map[string]string)
	file, err := os.Open("go.mod")
	if err != nil {
	return nil, fmt.Errorf("unable to open mod file")
	}
	defer file.Close()
	areModulesPresent := false
	scanner := bufio.NewScanner(file)
	for scanner.Scan() {
	splits := strings.Split(scanner.Text(), " ")
	if splits[0] == "require" {
	areModulesPresent = true
	// Mod file has only 1 dependency
	if len(splits) > 2 {
	modules[strings.TrimSpace(splits[1])] = splits[2]
	return modules, nil
	}
	} else if areModulesPresent && splits[0] != ")" && splits[0] != "" {
	modules[strings.TrimSpace(splits[0])] = splits[1]
	}
	}
	if scannerErr := scanner.Err(); scannerErr != nil {
	return nil, scannerErr
	}
	return modules, nil
	}

[wingyplus]

I prototype it using golang.org/x/mod module:

package main

import (
	"fmt"
	"log"

	"golang.org/x/mod/modfile"
)

func main() {
	mod := []byte(`module github.com/wingyplus/sentry-exp

go 1.14

require (
	github.com/getsentry/sentry-go v0.0.0
	github.com/gin-gonic/gin v1.6.2
)

replace github.com/getsentry/sentry-go v0.0.0 => ./pkg/sentry-go
`)
	f, err := modfile.Parse("go.mod", mod, nil)
	if err != nil {
		log.Fatal(err)
	}

	for _, req := range f.Require {
		fmt.Println(req.Mod.Path, req.Mod.Version)
	}
}

Result will be:

github.com/getsentry/sentry-go v0.0.0
github.com/gin-gonic/gin v1.6.2

[rhcarvalho]

FTR for binaries built in Module Mode, there is https://golang.org/pkg/runtime/debug/#BuildInfo.
No dependencies required.

[wingyplus]

@rhcarvalho Nice! it's works!

[wingyplus]

@rhcarvalho I opened PR to fix this problem. It's good to see your feedback. :)