diff options
Diffstat (limited to 'vendor/golang.org/x/text/internal/gen/gen.go')
-rw-r--r-- | vendor/golang.org/x/text/internal/gen/gen.go | 281 |
1 files changed, 0 insertions, 281 deletions
diff --git a/vendor/golang.org/x/text/internal/gen/gen.go b/vendor/golang.org/x/text/internal/gen/gen.go deleted file mode 100644 index 2acb035..0000000 --- a/vendor/golang.org/x/text/internal/gen/gen.go +++ /dev/null @@ -1,281 +0,0 @@ -// Copyright 2015 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package gen contains common code for the various code generation tools in the -// text repository. Its usage ensures consistency between tools. -// -// This package defines command line flags that are common to most generation -// tools. The flags allow for specifying specific Unicode and CLDR versions -// in the public Unicode data repository (http://www.unicode.org/Public). -// -// A local Unicode data mirror can be set through the flag -local or the -// environment variable UNICODE_DIR. The former takes precedence. The local -// directory should follow the same structure as the public repository. -// -// IANA data can also optionally be mirrored by putting it in the iana directory -// rooted at the top of the local mirror. Beware, though, that IANA data is not -// versioned. So it is up to the developer to use the right version. -package gen // import "golang.org/x/text/internal/gen" - -import ( - "bytes" - "flag" - "fmt" - "go/build" - "go/format" - "io" - "io/ioutil" - "log" - "net/http" - "os" - "path" - "path/filepath" - "sync" - "unicode" - - "golang.org/x/text/unicode/cldr" -) - -var ( - url = flag.String("url", - "http://www.unicode.org/Public", - "URL of Unicode database directory") - iana = flag.String("iana", - "http://www.iana.org", - "URL of the IANA repository") - unicodeVersion = flag.String("unicode", - getEnv("UNICODE_VERSION", unicode.Version), - "unicode version to use") - cldrVersion = flag.String("cldr", - getEnv("CLDR_VERSION", cldr.Version), - "cldr version to use") -) - -func getEnv(name, def string) string { - if v := os.Getenv(name); v != "" { - return v - } - return def -} - -// Init performs common initialization for a gen command. It parses the flags -// and sets up the standard logging parameters. -func Init() { - log.SetPrefix("") - log.SetFlags(log.Lshortfile) - flag.Parse() -} - -const header = `// Code generated by running "go generate" in golang.org/x/text. DO NOT EDIT. - -package %s - -` - -// UnicodeVersion reports the requested Unicode version. -func UnicodeVersion() string { - return *unicodeVersion -} - -// UnicodeVersion reports the requested CLDR version. -func CLDRVersion() string { - return *cldrVersion -} - -// IsLocal reports whether data files are available locally. -func IsLocal() bool { - dir, err := localReadmeFile() - if err != nil { - return false - } - if _, err = os.Stat(dir); err != nil { - return false - } - return true -} - -// OpenUCDFile opens the requested UCD file. The file is specified relative to -// the public Unicode root directory. It will call log.Fatal if there are any -// errors. -func OpenUCDFile(file string) io.ReadCloser { - return openUnicode(path.Join(*unicodeVersion, "ucd", file)) -} - -// OpenCLDRCoreZip opens the CLDR core zip file. It will call log.Fatal if there -// are any errors. -func OpenCLDRCoreZip() io.ReadCloser { - return OpenUnicodeFile("cldr", *cldrVersion, "core.zip") -} - -// OpenUnicodeFile opens the requested file of the requested category from the -// root of the Unicode data archive. The file is specified relative to the -// public Unicode root directory. If version is "", it will use the default -// Unicode version. It will call log.Fatal if there are any errors. -func OpenUnicodeFile(category, version, file string) io.ReadCloser { - if version == "" { - version = UnicodeVersion() - } - return openUnicode(path.Join(category, version, file)) -} - -// OpenIANAFile opens the requested IANA file. The file is specified relative -// to the IANA root, which is typically either http://www.iana.org or the -// iana directory in the local mirror. It will call log.Fatal if there are any -// errors. -func OpenIANAFile(path string) io.ReadCloser { - return Open(*iana, "iana", path) -} - -var ( - dirMutex sync.Mutex - localDir string -) - -const permissions = 0755 - -func localReadmeFile() (string, error) { - p, err := build.Import("golang.org/x/text", "", build.FindOnly) - if err != nil { - return "", fmt.Errorf("Could not locate package: %v", err) - } - return filepath.Join(p.Dir, "DATA", "README"), nil -} - -func getLocalDir() string { - dirMutex.Lock() - defer dirMutex.Unlock() - - readme, err := localReadmeFile() - if err != nil { - log.Fatal(err) - } - dir := filepath.Dir(readme) - if _, err := os.Stat(readme); err != nil { - if err := os.MkdirAll(dir, permissions); err != nil { - log.Fatalf("Could not create directory: %v", err) - } - ioutil.WriteFile(readme, []byte(readmeTxt), permissions) - } - return dir -} - -const readmeTxt = `Generated by golang.org/x/text/internal/gen. DO NOT EDIT. - -This directory contains downloaded files used to generate the various tables -in the golang.org/x/text subrepo. - -Note that the language subtag repo (iana/assignments/language-subtag-registry) -and all other times in the iana subdirectory are not versioned and will need -to be periodically manually updated. The easiest way to do this is to remove -the entire iana directory. This is mostly of concern when updating the language -package. -` - -// Open opens subdir/path if a local directory is specified and the file exists, -// where subdir is a directory relative to the local root, or fetches it from -// urlRoot/path otherwise. It will call log.Fatal if there are any errors. -func Open(urlRoot, subdir, path string) io.ReadCloser { - file := filepath.Join(getLocalDir(), subdir, filepath.FromSlash(path)) - return open(file, urlRoot, path) -} - -func openUnicode(path string) io.ReadCloser { - file := filepath.Join(getLocalDir(), filepath.FromSlash(path)) - return open(file, *url, path) -} - -// TODO: automatically periodically update non-versioned files. - -func open(file, urlRoot, path string) io.ReadCloser { - if f, err := os.Open(file); err == nil { - return f - } - r := get(urlRoot, path) - defer r.Close() - b, err := ioutil.ReadAll(r) - if err != nil { - log.Fatalf("Could not download file: %v", err) - } - os.MkdirAll(filepath.Dir(file), permissions) - if err := ioutil.WriteFile(file, b, permissions); err != nil { - log.Fatalf("Could not create file: %v", err) - } - return ioutil.NopCloser(bytes.NewReader(b)) -} - -func get(root, path string) io.ReadCloser { - url := root + "/" + path - fmt.Printf("Fetching %s...", url) - defer fmt.Println(" done.") - resp, err := http.Get(url) - if err != nil { - log.Fatalf("HTTP GET: %v", err) - } - if resp.StatusCode != 200 { - log.Fatalf("Bad GET status for %q: %q", url, resp.Status) - } - return resp.Body -} - -// TODO: use Write*Version in all applicable packages. - -// WriteUnicodeVersion writes a constant for the Unicode version from which the -// tables are generated. -func WriteUnicodeVersion(w io.Writer) { - fmt.Fprintf(w, "// UnicodeVersion is the Unicode version from which the tables in this package are derived.\n") - fmt.Fprintf(w, "const UnicodeVersion = %q\n\n", UnicodeVersion()) -} - -// WriteCLDRVersion writes a constant for the CLDR version from which the -// tables are generated. -func WriteCLDRVersion(w io.Writer) { - fmt.Fprintf(w, "// CLDRVersion is the CLDR version from which the tables in this package are derived.\n") - fmt.Fprintf(w, "const CLDRVersion = %q\n\n", CLDRVersion()) -} - -// WriteGoFile prepends a standard file comment and package statement to the -// given bytes, applies gofmt, and writes them to a file with the given name. -// It will call log.Fatal if there are any errors. -func WriteGoFile(filename, pkg string, b []byte) { - w, err := os.Create(filename) - if err != nil { - log.Fatalf("Could not create file %s: %v", filename, err) - } - defer w.Close() - if _, err = WriteGo(w, pkg, b); err != nil { - log.Fatalf("Error writing file %s: %v", filename, err) - } -} - -// WriteGo prepends a standard file comment and package statement to the given -// bytes, applies gofmt, and writes them to w. -func WriteGo(w io.Writer, pkg string, b []byte) (n int, err error) { - src := []byte(fmt.Sprintf(header, pkg)) - src = append(src, b...) - formatted, err := format.Source(src) - if err != nil { - // Print the generated code even in case of an error so that the - // returned error can be meaningfully interpreted. - n, _ = w.Write(src) - return n, err - } - return w.Write(formatted) -} - -// Repackage rewrites a Go file from belonging to package main to belonging to -// the given package. -func Repackage(inFile, outFile, pkg string) { - src, err := ioutil.ReadFile(inFile) - if err != nil { - log.Fatalf("reading %s: %v", inFile, err) - } - const toDelete = "package main\n\n" - i := bytes.Index(src, []byte(toDelete)) - if i < 0 { - log.Fatalf("Could not find %q in %s.", toDelete, inFile) - } - w := &bytes.Buffer{} - w.Write(src[i+len(toDelete):]) - WriteGoFile(outFile, pkg, w.Bytes()) -} |