update README; rename main.go

1 files changed, 0 insertions, 174 deletions

diff --git a/main.go b/main.go
deleted file mode 100644
index a0f522f..0000000
--- a/main.go
+++ /dev/null
@@ -1,174 +0,0 @@
-package main
-
-import (
-	"flag"
-	"fmt"
-	"go/ast"
-	"go/parser"
-	"go/token"
-	"io/fs"
-	"log"
-	"os"
-	"path/filepath"
-	"strings"
-	"sync"
-
-	"golang.org/x/mod/modfile"
-)
-
-var (
-	dir      = flag.String("d", ".", "directory with go.mod file")
-	recurse  = flag.Bool("r", false, "recursively search for go.mod files")
-	cache    = flag.String("modcache", getmodcache(), "location of go mod cache")
-	excheckm = flag.String("exempt", "golang.org", "domains exempt from the search, seperated by space")
-
-	checkInit   = flag.Bool("ci", false, "check for implementations of init()")
-	checkUnsafe = flag.Bool("cu", false, "check for imports of unsafe")
-	checkCgo    = flag.Bool("cc", false, "check for imports of cgo")
-	checkPprof  = flag.Bool("cp", false, "check for imports of net/http/pprof")
-
-	exceptions []string
-
-	relcache string
-)
-
-func getmodcache() string {
-	if c := os.Getenv("GOMODCACHE"); c != "" {
-		return c
-	} else if c = os.Getenv("GOPATH"); c != "" {
-		return c + "/pkg/mod"
-	} else {
-		return os.Getenv("HOME") + "/pkg/mod"
-	}
-
-}
-
-func main() {
-	flag.Parse()
-
-	exceptions = strings.Fields(*excheckm)
-	relcache = strings.Replace(*cache, os.Getenv("HOME"), "~", 1)
-
-	if !(*checkInit || *checkUnsafe || *checkCgo || *checkPprof) {
-		fmt.Println("Nothing to check. Use -ci|-cu|-cc|-cp")
-		return
-	}
-
-	if !*recurse {
-		file := filepath.Join(*dir, "go.mod")
-		singleFile(file)
-		return
-	}
-
-	recursive(*dir)
-}
-
-func singleFile(file string) {
-	data, err := os.ReadFile(file)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	mf, err := modfile.Parse(file, data, nil)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	var wg sync.WaitGroup
-	wg.Add(len(mf.Require))
-	pathcache := map[string]bool{}
-	for _, r := range mf.Require {
-		path := strings.Join(r.Syntax.Token, "@")
-		if _, done := pathcache[path]; done {
-			continue
-		}
-		pathcache[path] = true
-		go func() {
-			defer wg.Done()
-			checkPath(*cache + "/" + path)
-		}()
-	}
-
-	wg.Wait()
-}
-
-func recursive(dir string) {
-	filepath.WalkDir(dir, func(p string, info fs.DirEntry, err error) error {
-		if err != nil {
-			return err
-		} else if info.IsDir() {
-			return nil
-		} else if "go.mod" == filepath.Base(p) {
-			fmt.Printf("analyzing %s\n", p)
-			singleFile(p)
-		}
-		return nil
-	})
-}
-
-func isExempt(path string) bool {
-	for _, pattern := range exceptions {
-		if strings.Contains(path, pattern) {
-			return true
-		}
-	}
-	return false
-}
-
-func modpath(filename string) string {
-	return filepath.Join(relcache, strings.TrimPrefix(filename, *cache+"/"))
-}
-
-func checkPath(path string) {
-	var fset = token.NewFileSet()
-
-	filter := func(inf fs.FileInfo) bool {
-		return !strings.HasSuffix(inf.Name(), "_test.go")
-	}
-
-	filepath.WalkDir(path, func(p string, info fs.DirEntry, err error) error {
-		if err != nil {
-			return err
-		} else if !info.IsDir() {
-			return nil
-		} else if isExempt(p) {
-			return nil
-		}
-
-		pkgs, err := parser.ParseDir(fset, p, filter, parser.Mode(0))
-		if err != nil {
-			return err
-		}
-
-		for _, pkg := range pkgs {
-			for filename, file := range pkg.Files {
-				if *checkUnsafe || *checkCgo || *checkPprof {
-					for _, imp := range file.Imports {
-						if *checkUnsafe && imp.Path.Value == `"unsafe"` {
-							fmt.Println("unsafe in", modpath(filename))
-						} else if *checkCgo && imp.Path.Value == `"C"` {
-							fmt.Println("cgo    in", modpath(filename))
-						} else if *checkPprof && imp.Path.Value == `"net/http/pprof"` {
-							fmt.Println("pprof  in", modpath(filename))
-						}
-					}
-				}
-
-				if !*checkInit {
-					break
-				}
-			INIT:
-				for _, decl := range file.Decls {
-					if f, ok := decl.(*ast.FuncDecl); ok {
-						if f.Name.Name == "init" {
-							fmt.Println("init   in", modpath(filename))
-							break INIT
-						}
-					}
-				}
-			}
-		}
-
-		return nil
-	})
-}