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[tools] Move getProjectRoot() out to fileutils.

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Add tests.
This is going to be used by intrinsic-gen, a new tool

Bug: tint:832
Change-Id: Ib22ffa88a699be9c8dfdf3f8f6e32cff4ffc88e3
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/52602
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: David Neto <dneto@google.com>
This commit is contained in:
Ben Clayton
2021-05-31 19:40:00 +00:00
committed by Tint LUCI CQ
parent c91f8f2822
commit 3264765bc2
3 changed files with 68 additions and 31 deletions
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35
tools/src/cmd/trim-includes/main.go
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@@ -30,20 +30,15 @@ import (
"os/exec"
"path/filepath"
"regexp"
"runtime"
"strings"
"sync"
"time"
"dawn.googlesource.com/tint/tools/src/fileutils"
"dawn.googlesource.com/tint/tools/src/glob"
)
var (
// Directory to this .go file
toolRoot = getToolRoot()
// Root directory of the Tint project
projectRoot = getProjectRoot(toolRoot)
// Path to the build script to run after each attempting to remove each
// #include
buildScript = ""
@@ -104,7 +99,7 @@ func run() error {
}
fmt.Println("Scanning for files...")
paths, err := glob.Scan(projectRoot, cfg)
paths, err := glob.Scan(fileutils.ProjectRoot(), cfg)
if err != nil {
return err
}
@@ -235,7 +230,7 @@ func (f *file) format() error {
// Runs git add on the file
func (f *file) stage() error {
err := exec.Command("git", "-C", projectRoot, "add", f.path).Run()
err := exec.Command("git", "-C", fileutils.ProjectRoot(), "add", f.path).Run()
if err != nil {
return fmt.Errorf("Couldn't stage file '%v': %w", f.path, err)
}
@@ -250,7 +245,7 @@ func loadFiles(paths []string) ([]file, error) {
files := make([]file, len(paths))
errs := make([]error, len(paths))
for i, path := range paths {
i, path := i, filepath.Join(projectRoot, path)
i, path := i, filepath.Join(fileutils.ProjectRoot(), path)
go func() {
defer wg.Done()
body, err := ioutil.ReadFile(path)
@@ -271,25 +266,3 @@ func loadFiles(paths []string) ([]file, error) {
}
return files, nil
}
// Returns the path to the directory holding this .go file
func getToolRoot() string {
_, filename, _, ok := runtime.Caller(0)
if !ok {
panic("No caller information")
}
mainPath, err := filepath.Abs(filename)
if err != nil {
panic(err)
}
return filepath.Dir(mainPath)
}
// Returns the path to the project root
func getProjectRoot(toolRoot string) string {
root, err := filepath.Abs(filepath.Join(toolRoot, "../.."))
if err != nil {
panic(err)
}
return root
}