| 1 | package gallery |
| 2 | |
| 3 | import ( |
| 4 | "strings" |
| 5 | |
| 6 | "golang.org/x/text/language" |
| 7 | "golang.org/x/text/message" |
| 8 | "golang.org/x/text/number" |
| 9 | |
| 10 | "amadan.net/rastrillo/fiesta/internal/build" |
| 11 | ) |
| 12 | |
| 13 | // What a file weighs. The Getting started page gives each shipped file |
| 14 | // two figures, the bytes as written and gzipped, computed at render |
| 15 | // time from the release build's bytes. Neither is typed into prose or |
| 16 | // pinned in a test: compressor output can move between Go versions, so |
| 17 | // a golden figure would churn on a toolchain bump while proving |
| 18 | // nothing. Rastrillo's third figure, gzipped without comments, has no |
| 19 | // place here: a release file is already stripped, so the line's third |
| 20 | // part is always dropped. |
| 21 | |
| 22 | // weightSep is the separator the weight line's parts are cut at. The |
| 23 | // stripped figure is the last part after it in every language, so a |
| 24 | // file with no stripped figure loses that part rather than repeating |
| 25 | // the gzipped figure under a different name. |
| 26 | const weightSep = " · " |
| 27 | |
| 28 | // weight is one file's figures, in bytes. |
| 29 | type weight struct { |
| 30 | Raw, Gzip int |
| 31 | } |
| 32 | |
| 33 | // weigh measures one file: its length, and its length gzipped at level |
| 34 | // 6, the level a server or edge that compresses on the fly typically |
| 35 | // uses, through the release build's own compressor so the two agree. |
| 36 | func weigh(body []byte) weight { |
| 37 | return weight{Raw: len(body), Gzip: build.Gzipped(body)} |
| 38 | } |
| 39 | |
| 40 | // kib formats a byte count in KiB (1024; lowercase "kb" is kilobits) |
| 41 | // in the page's own number format: one decimal below 10 KiB, where |
| 42 | // rounding to a whole number would turn a 634-byte theme into "1" or |
| 43 | // "0", and whole numbers above, where a decimal is noise. The digits |
| 44 | // and separators are the locale's own, as x/text writes them. |
| 45 | func kib(locale string, n int) string { |
| 46 | tag, err := language.Parse(locale) |
| 47 | if err != nil { |
| 48 | tag = language.English |
| 49 | } |
| 50 | p := message.NewPrinter(tag) |
| 51 | v := float64(n) / 1024 |
| 52 | if n < 10*1024 { |
| 53 | return p.Sprint(number.Decimal(v, number.MinFractionDigits(1), number.MaxFractionDigits(1))) |
| 54 | } |
| 55 | return p.Sprint(number.Decimal(v, number.MaxFractionDigits(0))) |
| 56 | } |
| 57 | |
| 58 | // weightIn is one file's line in one locale: the weight line with its |
| 59 | // last part, the stripped figure, cut off, since no release file has |
| 60 | // one, and the two figures written in. |
| 61 | func (s *site) weightIn(locale string, w weight) string { |
| 62 | line := s.say(locale, "gallery.started.weight") |
| 63 | if i := strings.LastIndex(line, weightSep); i >= 0 { |
| 64 | line = line[:i] |
| 65 | } |
| 66 | return interpolate(line, []string{"raw", kib(locale, w.Raw), "gzip", kib(locale, w.Gzip)}) |
| 67 | } |
| 68 | |
amadan