9f82b75e57
* removed packer.Cache and references since packer.Cache is never used except in the download step. The download step now uses the new func packer.CachePath(targetPath) for this, the behavior is the same. * removed download code from packer that was reimplemented into the go-getter library: progress bar, http download restart, checksuming from file, skip already downloaded files, symlinking, make a download cancellable by context. * on windows if packer is running without symlinking rights and we are getting a local file, the file will be copied instead to avoid errors. * added unit tests for step_download that are now CI tested on windows, mac & linux. * files are now downloaded under cache dir `sha1(filename + "?checksum=" + checksum) + file_extension` * since the output dir is based on the source url and the checksum, when the checksum fails, the file is auto deleted. * a download file is protected and locked by a file lock, * updated docs * updated go modules and vendors
80 lines
1.4 KiB
Go
80 lines
1.4 KiB
Go
// +build !windows
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// +build !js
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// +build !appengine
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package runewidth
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import (
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"os"
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"regexp"
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"strings"
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)
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var reLoc = regexp.MustCompile(`^[a-z][a-z][a-z]?(?:_[A-Z][A-Z])?\.(.+)`)
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var mblenTable = map[string]int{
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"utf-8": 6,
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"utf8": 6,
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"jis": 8,
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"eucjp": 3,
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"euckr": 2,
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"euccn": 2,
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"sjis": 2,
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"cp932": 2,
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"cp51932": 2,
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"cp936": 2,
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"cp949": 2,
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"cp950": 2,
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"big5": 2,
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"gbk": 2,
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"gb2312": 2,
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}
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func isEastAsian(locale string) bool {
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charset := strings.ToLower(locale)
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r := reLoc.FindStringSubmatch(locale)
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if len(r) == 2 {
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charset = strings.ToLower(r[1])
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}
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if strings.HasSuffix(charset, "@cjk_narrow") {
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return false
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}
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for pos, b := range []byte(charset) {
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if b == '@' {
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charset = charset[:pos]
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break
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}
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}
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max := 1
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if m, ok := mblenTable[charset]; ok {
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max = m
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}
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if max > 1 && (charset[0] != 'u' ||
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strings.HasPrefix(locale, "ja") ||
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strings.HasPrefix(locale, "ko") ||
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strings.HasPrefix(locale, "zh")) {
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return true
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}
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return false
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}
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// IsEastAsian return true if the current locale is CJK
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func IsEastAsian() bool {
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locale := os.Getenv("LC_CTYPE")
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if locale == "" {
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locale = os.Getenv("LANG")
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}
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// ignore C locale
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if locale == "POSIX" || locale == "C" {
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return false
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}
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if len(locale) > 1 && locale[0] == 'C' && (locale[1] == '.' || locale[1] == '-') {
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return false
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}
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return isEastAsian(locale)
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}
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