1 files changed, 0 insertions, 458 deletions
diff --git a/vendor/modernc.org/ccgo/v3/lib/util.go b/vendor/modernc.org/ccgo/v3/lib/util.go
deleted file mode 100644
index f11e439ca..000000000
--- a/vendor/modernc.org/ccgo/v3/lib/util.go
+++ /dev/null
@@ -1,458 +0,0 @@
-// Copyright 2020 The CCGO Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// generator.go helpers
-
-package ccgo // import "modernc.org/ccgo/v3/lib"
-
-import (
-	"archive/tar"
-	"bufio"
-	"bytes"
-	"compress/gzip"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"runtime/debug"
-	"strings"
-)
-
-// CopyFile copies src to dest, preserving permissions and times where/when
-// possible. If canOverwrite is not nil, it is consulted whether a destination
-// file can be overwritten. If canOverwrite is nil then destination is
-// overwritten if permissions allow that, otherwise the function fails.
-//
-// Src and dst must be in the slash form.
-func CopyFile(dst, src string, canOverwrite func(fn string, fi os.FileInfo) bool) (n int64, rerr error) {
-	dst = filepath.FromSlash(dst)
-	dstDir := filepath.Dir(dst)
-	di, err := os.Stat(dstDir)
-	switch {
-	case err != nil:
-		if !os.IsNotExist(err) {
-			return 0, err
-		}
-
-		if err := os.MkdirAll(dstDir, 0770); err != nil {
-			return 0, err
-		}
-	case err == nil:
-		if !di.IsDir() {
-			return 0, fmt.Errorf("cannot create directory, file exists: %s", dst)
-		}
-	}
-
-	src = filepath.FromSlash(src)
-	si, err := os.Stat(src)
-	if err != nil {
-		return 0, err
-	}
-
-	if si.IsDir() {
-		return 0, fmt.Errorf("cannot copy a directory: %s", src)
-	}
-
-	di, err = os.Stat(dst)
-	switch {
-	case err != nil && !os.IsNotExist(err):
-		return 0, err
-	case err == nil:
-		if di.IsDir() {
-			return 0, fmt.Errorf("cannot overwite a directory: %s", dst)
-		}
-
-		if canOverwrite != nil && !canOverwrite(dst, di) {
-			return 0, fmt.Errorf("cannot overwite: %s", dst)
-		}
-	}
-
-	s, err := os.Open(src)
-	if err != nil {
-		return 0, err
-	}
-
-	defer s.Close()
-	r := bufio.NewReader(s)
-
-	d, err := os.Create(dst)
-
-	defer func() {
-		if err := d.Close(); err != nil && rerr == nil {
-			rerr = err
-			return
-		}
-
-		if err := os.Chmod(dst, si.Mode()); err != nil && rerr == nil {
-			rerr = err
-			return
-		}
-
-		if err := os.Chtimes(dst, si.ModTime(), si.ModTime()); err != nil && rerr == nil {
-			rerr = err
-			return
-		}
-	}()
-
-	w := bufio.NewWriter(d)
-
-	defer func() {
-		if err := w.Flush(); err != nil && rerr == nil {
-			rerr = err
-		}
-	}()
-
-	return io.Copy(w, r)
-}
-
-// MustCopyFile is like CopyFile but it executes Fatal(stackTrace, err) if it fails.
-func MustCopyFile(stackTrace bool, dst, src string, canOverwrite func(fn string, fi os.FileInfo) bool) int64 {
-	n, err := CopyFile(dst, src, canOverwrite)
-	if err != nil {
-		Fatal(stackTrace, err)
-	}
-
-	return n
-}
-
-// CopyDir recursively copies src to dest, preserving permissions and times
-// where/when possible. If canOverwrite is not nil, it is consulted whether a
-// destination file can be overwritten. If canOverwrite is nil then destination
-// is overwritten if permissions allow that, otherwise the function fails.
-//
-// Src and dst must be in the slash form.
-func CopyDir(dst, src string, canOverwrite func(fn string, fi os.FileInfo) bool) (files int, bytes int64, rerr error) {
-	dst = filepath.FromSlash(dst)
-	src = filepath.FromSlash(src)
-	si, err := os.Stat(src)
-	if err != nil {
-		return 0, 0, err
-	}
-
-	if !si.IsDir() {
-		return 0, 0, fmt.Errorf("cannot copy a file: %s", src)
-	}
-
-	return files, bytes, filepath.Walk(src, func(path string, info os.FileInfo, err error) error {
-		if err != nil {
-			return err
-		}
-
-		rel, err := filepath.Rel(src, path)
-		if err != nil {
-			return err
-		}
-
-		if info.IsDir() {
-			return os.MkdirAll(filepath.Join(dst, rel), 0770)
-		}
-
-		n, err := CopyFile(filepath.Join(dst, rel), path, canOverwrite)
-		if err != nil {
-			return err
-		}
-
-		files++
-		bytes += n
-		return nil
-	})
-}
-
-// MustCopyDir is like CopyDir, but it executes Fatal(stackTrace, errú if it fails.
-func MustCopyDir(stackTrace bool, dst, src string, canOverwrite func(fn string, fi os.FileInfo) bool) (files int, bytes int64) {
-	file, bytes, err := CopyDir(dst, src, canOverwrite)
-	if err != nil {
-		Fatal(stackTrace, err)
-	}
-
-	return file, bytes
-}
-
-// UntarFile extracts a named tar.gz archive into dst. If canOverwrite is not
-// nil, it is consulted whether a destination file can be overwritten. If
-// canOverwrite is nil then destination is overwritten if permissions allow
-// that, otherwise the function fails.
-//
-// Src and dst must be in the slash form.
-func UntarFile(dst, src string, canOverwrite func(fn string, fi os.FileInfo) bool) error {
-	f, err := os.Open(filepath.FromSlash(src))
-	if err != nil {
-		return err
-	}
-
-	defer f.Close()
-
-	return Untar(dst, bufio.NewReader(f), canOverwrite)
-}
-
-// MustUntarFile is like UntarFile but it executes Fatal(stackTrace, err) if it fails.
-func MustUntarFile(stackTrace bool, dst, src string, canOverwrite func(fn string, fi os.FileInfo) bool) {
-	if err := UntarFile(dst, src, canOverwrite); err != nil {
-		Fatal(stackTrace, err)
-	}
-}
-
-// Untar extracts a tar.gz archive into dst. If canOverwrite is not nil, it is
-// consulted whether a destination file can be overwritten. If canOverwrite is
-// nil then destination is overwritten if permissions allow that, otherwise the
-// function fails.
-//
-// Dst must be in the slash form.
-func Untar(dst string, r io.Reader, canOverwrite func(fn string, fi os.FileInfo) bool) error {
-	dst = filepath.FromSlash(dst)
-	gr, err := gzip.NewReader(r)
-	if err != nil {
-		return err
-	}
-
-	tr := tar.NewReader(gr)
-	for {
-		hdr, err := tr.Next()
-		if err != nil {
-			if err != io.EOF {
-				return err
-			}
-
-			return nil
-		}
-
-		switch hdr.Typeflag {
-		case tar.TypeDir:
-			dir := filepath.Join(dst, hdr.Name)
-			if err = os.MkdirAll(dir, 0770); err != nil {
-				return err
-			}
-		case tar.TypeSymlink, tar.TypeXGlobalHeader:
-			// skip
-		case tar.TypeReg, tar.TypeRegA:
-			dir := filepath.Dir(filepath.Join(dst, hdr.Name))
-			if _, err := os.Stat(dir); err != nil {
-				if !os.IsNotExist(err) {
-					return err
-				}
-
-				if err = os.MkdirAll(dir, 0770); err != nil {
-					return err
-				}
-			}
-
-			fn := filepath.Join(dst, hdr.Name)
-			f, err := os.OpenFile(fn, os.O_CREATE|os.O_WRONLY, os.FileMode(hdr.Mode))
-			if err != nil {
-				return err
-			}
-
-			w := bufio.NewWriter(f)
-			if _, err = io.Copy(w, tr); err != nil {
-				return err
-			}
-
-			if err := w.Flush(); err != nil {
-				return err
-			}
-
-			if err := f.Close(); err != nil {
-				return err
-			}
-
-			if err := os.Chtimes(fn, hdr.AccessTime, hdr.ModTime); err != nil {
-				return err
-			}
-		default:
-			return fmt.Errorf("unexpected tar header typeflag %#02x", hdr.Typeflag)
-		}
-	}
-
-}
-
-// MustUntar is like Untar but it executes Fatal(stackTrace, err) if it fails.
-func MustUntar(stackTrace bool, dst string, r io.Reader, canOverwrite func(fn string, fi os.FileInfo) bool) {
-	if err := Untar(dst, r, canOverwrite); err != nil {
-		Fatal(stackTrace, err)
-	}
-}
-
-// Fatalf prints a formatted message to os.Stderr and performs os.Exit(1). A
-// stack trace is added if stackTrace is true.
-func Fatalf(stackTrace bool, s string, args ...interface{}) {
-	if stackTrace {
-		fmt.Fprintf(os.Stderr, "%s\n", debug.Stack())
-	}
-	fmt.Fprintln(os.Stderr, strings.TrimSpace(fmt.Sprintf(s, args...)))
-	os.Exit(1)
-}
-
-// Fatal prints its argumenst to os.Stderr and performs os.Exit(1). A
-// stack trace is added if stackTrace is true.
-func Fatal(stackTrace bool, args ...interface{}) {
-	if stackTrace {
-		fmt.Fprintf(os.Stderr, "%s\n", debug.Stack())
-	}
-	fmt.Fprintln(os.Stderr, strings.TrimSpace(fmt.Sprint(args...)))
-	os.Exit(1)
-}
-
-// Mkdirs will create all paths. Paths must be in slash form.
-func Mkdirs(paths ...string) error {
-	for _, path := range paths {
-		path = filepath.FromSlash(path)
-		if err := os.MkdirAll(path, 0770); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-// MustMkdirs is like Mkdir but if executes Fatal(stackTrace, err) if it fails.
-func MustMkdirs(stackTrace bool, paths ...string) {
-	if err := Mkdirs(paths...); err != nil {
-		Fatal(stackTrace, err)
-	}
-}
-
-// InDir executes f in dir. Dir must be in slash form.
-func InDir(dir string, f func() error) (err error) {
-	var cwd string
-	if cwd, err = os.Getwd(); err != nil {
-		return err
-	}
-
-	defer func() {
-		if err2 := os.Chdir(cwd); err2 != nil {
-			err = err2
-		}
-	}()
-
-	if err = os.Chdir(filepath.FromSlash(dir)); err != nil {
-		return err
-	}
-
-	return f()
-}
-
-// MustInDir is like InDir but it executes Fatal(stackTrace, err) if it fails.
-func MustInDir(stackTrace bool, dir string, f func() error) {
-	if err := InDir(dir, f); err != nil {
-		Fatal(stackTrace, err)
-	}
-}
-
-type echoWriter struct {
-	w bytes.Buffer
-}
-
-func (w *echoWriter) Write(b []byte) (int, error) {
-	os.Stdout.Write(b)
-	return w.w.Write(b)
-}
-
-// Shell echoes and executes cmd with args and returns the combined output if the command.
-func Shell(cmd string, args ...string) ([]byte, error) {
-	cmd, err := exec.LookPath(cmd)
-	if err != nil {
-		return nil, err
-	}
-
-	wd, err := AbsCwd()
-	if err != nil {
-		return nil, err
-	}
-
-	fmt.Printf("execute %s %q in %s\n", cmd, args, wd)
-	var b echoWriter
-	c := exec.Command(cmd, args...)
-	c.Stdout = &b
-	c.Stderr = &b
-	err = c.Run()
-	return b.w.Bytes(), err
-}
-
-// MustShell is like Shell but it executes Fatal(stackTrace, err) if it fails.
-func MustShell(stackTrace bool, cmd string, args ...string) []byte {
-	b, err := Shell(cmd, args...)
-	if err != nil {
-		Fatalf(stackTrace, "%v %s\noutput: %s\nerr: %s", cmd, args, b, err)
-	}
-
-	return b
-}
-
-// Compile executes Shell with cmd set to "ccgo".
-func Compile(args ...string) ([]byte, error) { return Shell("ccgo", args...) }
-
-// MustCompile is like Compile but if executes Fatal(stackTrace, err) if it fails.
-func MustCompile(stackTrace bool, args ...string) []byte {
-	return MustShell(stackTrace, "ccgo", args...)
-}
-
-// Run is like Compile, but executes in-process.
-func Run(args ...string) ([]byte, error) {
-	var b bytes.Buffer
-	t := NewTask(append([]string{"ccgo"}, args...), &b, &b)
-	err := t.Main()
-	return b.Bytes(), err
-}
-
-// MustRun is like Run but if executes Fatal(stackTrace, err) if it fails.
-func MustRun(stackTrace bool, args ...string) []byte {
-	var b bytes.Buffer
-	args = append([]string{"ccgo"}, args...)
-	t := NewTask(args, &b, &b)
-	if err := t.Main(); err != nil {
-		Fatalf(stackTrace, "%v\noutput: %s\nerr: %s", args, b.Bytes(), err)
-	}
-
-	return b.Bytes()
-}
-
-// AbsCwd returns the absolute working directory.
-func AbsCwd() (string, error) {
-	wd, err := os.Getwd()
-	if err != nil {
-		return "", err
-	}
-
-	if wd, err = filepath.Abs(wd); err != nil {
-		return "", err
-	}
-
-	return wd, nil
-}
-
-// MustAbsCwd is like AbsCwd but executes Fatal(stackTrace, err) if it fails.
-func MustAbsCwd(stackTrace bool) string {
-	s, err := AbsCwd()
-	if err != nil {
-		Fatal(stackTrace, err)
-	}
-
-	return s
-}
-
-// Env returns the value of environmental variable key of dflt otherwise.
-func Env(key, dflt string) string {
-	if s := os.Getenv(key); s != "" {
-		return s
-	}
-
-	return dflt
-}
-
-// MustTempDir is like ioutil.TempDir but executes Fatal(stackTrace, err) if it
-// fails. The returned path is absolute.
-func MustTempDir(stackTrace bool, dir, name string) string {
-	s, err := ioutil.TempDir(dir, name)
-	if err != nil {
-		Fatal(stackTrace, err)
-	}
-
-	if s, err = filepath.Abs(s); err != nil {
-		Fatal(stackTrace, err)
-	}
-
-	return s
-}