Add pkg/analysis.

It's a deprecated package that will be removed from upstream soon.

main.go

@@ -40,6 +40,7 @@ import (
 	"github.com/go-gl/mathgl/mgl64"
 	"github.com/mattn/go-runewidth"
 	intmath "github.com/pkg/math"
+	"github.com/shurcooL-legacy/Conception-go/pkg/analysis"
 	"github.com/shurcooL-legacy/Conception-go/pkg/exp11"
 	"github.com/shurcooL-legacy/Conception-go/pkg/exp12"
 	"github.com/shurcooL-legacy/Conception-go/pkg/exp13"
@@ -60,7 +61,6 @@ import (
 	"github.com/shurcooL/github_flavored_markdown/gfmstyle"
 	"github.com/shurcooL/go-goon"
 	"github.com/shurcooL/go-goon/bypass"
-	"github.com/shurcooL/go/analysis"
 	"github.com/shurcooL/go/gddo"
 	"github.com/shurcooL/go/open"
 	"github.com/shurcooL/go/pipeutil"

pkg/analysis/generated_detection.go

@@ -0,0 +1,51 @@
+// Package analysis provides a routine that determines if a file is generated or handcrafted.
+//
+// Deprecated: Use github.com/shurcooL/go/generated package instead. This implementation
+// was done ad-hoc before a standard was proposed.
+package analysis
+
+import (
+	"bufio"
+	"io"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// IsFileGenerated returns true if the specified file is generated, or false if it's handcrafted.
+// rootDir is the filepath of root directory, but name is a '/'-separated path to file.
+//
+// It considers vendored files as "generated", in the sense that they are not the canonical
+// version of a file. This behavior would ideally be factored out into a higher level utility,
+// since it has nothing to do with generated comments.
+//
+// Deprecated: Use generated.ParseFile instead, which is more well defined because it
+// implements a specification.
+func IsFileGenerated(rootDir, name string) (bool, error) {
+	// Detect from name.
+	switch {
+	case strings.HasPrefix(name, "vendor/") || strings.Contains(name, "/vendor/"):
+		return true, nil
+	case strings.HasPrefix(name, "Godeps/"):
+		return true, nil
+	}
+
+	// Detect from file contents.
+	f, err := os.Open(filepath.Join(rootDir, filepath.FromSlash(name)))
+	if err != nil {
+		return false, err
+	}
+	defer f.Close()
+	r := bufio.NewReader(f)
+	s, err := r.ReadString('\n')
+	if err == io.EOF {
+		// Empty file or exactly 1 line is not considered to be generated.
+		return false, nil
+	} else if err != nil {
+		return false, err
+	}
+	if strings.Contains(s, "Code generated by") { // Consistent with https://golang.org/cl/15073.
+		return true, nil
+	}
+	return (strings.Contains(s, "GENERATED") || strings.Contains(s, "generated")) && strings.Contains(s, "DO NOT EDIT"), nil
+}

pkg/analysis/generated_detection_test.go

@@ -0,0 +1,28 @@
+package analysis_test
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/shurcooL-legacy/Conception-go/pkg/analysis"
+)
+
+func ExampleIsFileGenerated() {
+	cwd, err := os.Getwd()
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Println(analysis.IsFileGenerated(cwd, "testdata/generated_0.go.txt"))
+	fmt.Println(analysis.IsFileGenerated(cwd, "testdata/handcrafted_0.go.txt"))
+	fmt.Println(analysis.IsFileGenerated(cwd, "testdata/handcrafted_1.go.txt"))
+	fmt.Println(analysis.IsFileGenerated(cwd, "vendor/github.com/shurcooL/go/analysis/file.go"))
+	fmt.Println(analysis.IsFileGenerated(cwd, "subpkg/vendor/math/math.go"))
+
+	// Output:
+	// true <nil>
+	// false <nil>
+	// false <nil>
+	// true <nil>
+	// true <nil>
+}

pkg/analysis/testdata/generated_0.go.txt

@@ -0,0 +1,32 @@
+// generated by vfsgen; DO NOT EDIT
+
+// +build !dev
+
+package issues
+
+import (
+	"bytes"
+	"compress/gzip"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	pathpkg "path"
+	"time"
+)
+
+// Assets statically implements the virtual filesystem given to vfsgen as input.
+var Assets = func() http.FileSystem {
+	mustUnmarshalTextTime := func(text string) time.Time {
+		var t time.Time
+		err := t.UnmarshalText([]byte(text))
+		if err != nil {
+			panic(err)
+		}
+		return t
+	}
+
+	fs := _vfsgen_fs{
+		...
+	}
+}

pkg/analysis/testdata/handcrafted_0.go.txt

@@ -0,0 +1,9 @@
+// Package foo offers bar.
+package foo
+
+import "strings"
+
+// Bar is bar.
+func Bar() string {
+	return strings.Title("bar")
+}

pkg/analysis/testdata/handcrafted_1.go.txt

@@ -0,0 +1 @@
+// Code generated by protoc-gen-gogo. Actually it isn't, because it's only 1 line.