| 1 | package gallery |
| 2 | |
| 3 | import ( |
| 4 | "encoding/json" |
| 5 | "errors" |
| 6 | "fmt" |
| 7 | "html" |
| 8 | "html/template" |
| 9 | "io/fs" |
| 10 | "regexp" |
| 11 | "strings" |
| 12 | "sync" |
| 13 | "unicode" |
| 14 | |
| 15 | "amadan.net/rastrillo/fiesta" |
| 16 | "amadan.net/rastrillo/fiesta/example" |
| 17 | ) |
| 18 | |
| 19 | // ── Sample content in the page's language ──────────────────────────── |
| 20 | // |
| 21 | // The samples speak the language of the page they are on. A Japanese |
| 22 | // page with English buttons was showing how English fits a component, |
| 23 | // which is the one language a reader can already picture: German runs |
| 24 | // long, Arabic runs right to left, and the only way to see either inside |
| 25 | // a component is to put it there. The stand-ins stay as written: a |
| 26 | // person is called Grace Hopper in every language, an address is an |
| 27 | // address and a route is a route. |
| 28 | // |
| 29 | // This is Rastrillo's markup walker, under Rastrillo's names. Fiesta's |
| 30 | // samples are all markup (the examples' own documents), so Rastrillo's |
| 31 | // second walker, for a partial's data, has no counterpart here. Every |
| 32 | // sample string is looked up by its English in |
| 33 | // i18n/samples.<locale>.json, which hack/seed/run-translations.sh |
| 34 | // writes as Rastrillo's sampleProse is written, and every lookup is |
| 35 | // traced as samples.<English>, so the parity gate and the leak gate |
| 36 | // read what the frames asked for. |
| 37 | // |
| 38 | // Three things are Fiesta's own. localAttrs also writes the enhanced |
| 39 | // controls' data-rst-<key> attributes from the framework's own frozen |
| 40 | // i18n/<locale>.json, so the select and date fields speak the page's |
| 41 | // language without a script table. An element that carries lang is in |
| 42 | // that language already (the language menu's endonyms) and stays as |
| 43 | // written. And a word's sense, which Rastrillo's typed data carries and |
| 44 | // plain HTML cannot, is named per example in sampleSenses. |
| 45 | // |
| 46 | // What stays as written is decided by rule rather than listed, so a new |
| 47 | // sample is translated by default and the parity gate asks for its |
| 48 | // eleven translations; see keepsAsWritten. The list that exists, |
| 49 | // sampleStandIns, is the names and brands no rule can recognise. |
| 50 | |
| 51 | // sampleStandIns are the names, brands and fixed values that stay as |
| 52 | // written inside a string that is otherwise translated. "Actions for |
| 53 | // Grace Hopper" is translated around the name; "Grace Hopper" alone is |
| 54 | // not looked up at all. TestSampleTranslationsKeepTheirStandIns holds |
| 55 | // every translation of a key that carries one to carrying it too. |
| 56 | // Rastrillo's list, then the names Fiesta's seeded examples carry that |
| 57 | // Rastrillo's do not. |
| 58 | var sampleStandIns = []string{ |
| 59 | // People. |
| 60 | "Grace Hopper", "Ada Lovelace", "Alan Turing", "Fiona Reid", "Otto Neurath", |
| 61 | "Hedy Lamarr", "Mary Sherman", |
| 62 | // Brands and products: the gallery's own sample apps, the framework, |
| 63 | // and the companies whose buttons the sign-in screen draws. |
| 64 | "Harbour", "rastrillo", "Google", "Apple", "WCAG", |
| 65 | // Fixed values a translation would only damage: a shortened count, |
| 66 | // and a postal address that is somewhere. |
| 67 | "4.1k", "42 Wharf Road, Dublin 2", |
| 68 | // Fiesta's own: the framework's name, the sample app the shells |
| 69 | // frame, the sign-in service the screens name, and the two agents |
| 70 | // the actor and token samples name. Then the fixed values: the |
| 71 | // currency code the money field shows and posts beside its amount |
| 72 | // (Rastrillo keeps it as a data key, Currency), a request's |
| 73 | // reference, and the reference an error page quotes. |
| 74 | "Fiesta", "Party planner", "Keymail", "Claude", "Codex", |
| 75 | "EUR", "REQ-4471", "k3f9tq", |
| 76 | } |
| 77 | |
| 78 | var ( |
| 79 | // sampleIdent is a machine's word: a field name, an option's value, a |
| 80 | // slug. A lowercase letter first, then no spaces. |
| 81 | sampleIdent = regexp.MustCompile(`^\p{Ll}[\p{L}\p{N}_.\-]*$`) |
| 82 | // sampleCode is a reference with a digit in it (AB3PX, D02, #4471), |
| 83 | // or a one- or two-letter initial. |
| 84 | sampleCode = regexp.MustCompile(`#?\b(?:[A-Z]*[0-9][A-Z0-9]*|[A-Z]{1,2})\b`) |
| 85 | sampleMail = regexp.MustCompile(`\S+@\S*`) |
| 86 | ) |
| 87 | |
| 88 | // keepsAsWritten says whether a sample string stays as it is in every |
| 89 | // language: a URL, an address, a machine's identifier, a number with no |
| 90 | // words around it, or nothing but stand-ins. |
| 91 | func keepsAsWritten(s string) bool { |
| 92 | s = strings.TrimSpace(html.UnescapeString(s)) |
| 93 | if s == "" || strings.HasPrefix(s, "/") || strings.HasPrefix(s, "?") || |
| 94 | strings.HasPrefix(s, "#") && !strings.Contains(s, " ") || strings.Contains(s, "://") { |
| 95 | return true |
| 96 | } |
| 97 | if sampleIdent.MatchString(s) { |
| 98 | return true |
| 99 | } |
| 100 | return !hasWords(s) |
| 101 | } |
| 102 | |
| 103 | // hasWords says whether anything a reader would call a word is left in s |
| 104 | // once the stand-ins, the email addresses and the codes are taken out. |
| 105 | func hasWords(s string) bool { |
| 106 | for _, k := range sampleStandIns { |
| 107 | s = strings.ReplaceAll(s, k, "") |
| 108 | } |
| 109 | s = sampleMail.ReplaceAllString(s, "") |
| 110 | s = sampleCode.ReplaceAllString(s, "") |
| 111 | return strings.IndexFunc(s, unicode.IsLetter) >= 0 |
| 112 | } |
| 113 | |
| 114 | // verbSense is Rastrillo's suffix for a sample word that is an action |
| 115 | // where the same English is a noun elsewhere in the samples: Archive in |
| 116 | // a row's menu against the Archive a topbar links to. English spells |
| 117 | // the two alike and most of the eleven do not (Archivar and Archivo), |
| 118 | // so the action is looked up under its own key, the word plus |
| 119 | // verbSense. English still reads the bare word. |
| 120 | const verbSense = " (verb)" |
| 121 | |
| 122 | // nounSense is the other way round: a sample word that names a thing |
| 123 | // where the catalog's bare word is the action. The seg-tabs group |
| 124 | // "View" names the view a reader picks; the bare View is a row menu's |
| 125 | // link, a verb in most of the eleven (Russian Открыть, open), which |
| 126 | // would label the group as a command. |
| 127 | const nounSense = " (noun)" |
| 128 | |
| 129 | // withoutSense is a sample key's English: the key with its sense, if |
| 130 | // it has one, taken off. |
| 131 | func withoutSense(key string) string { |
| 132 | return strings.TrimSuffix(strings.TrimSuffix(key, verbSense), nounSense) |
| 133 | } |
| 134 | |
| 135 | // sampleSenses names, per example, the sample text whose key is not its |
| 136 | // English. Rastrillo marks the sense in its typed sample data |
| 137 | // (verb("Archive")); an example here is plain HTML, which cannot, so |
| 138 | // the example is named instead. localMarkup and EnglishStrings both |
| 139 | // apply it, so the walker and the exporter cannot disagree. Rastrillo's |
| 140 | // sampleProse has two verb keys, and Fiesta's examples use both words |
| 141 | // in that sense: the row menu's Archive button and the bulk bar's |
| 142 | // Export action. |
| 143 | var sampleSenses = map[string]map[string]string{ |
| 144 | "row-menu": {"Archive": "Archive" + verbSense}, |
| 145 | "bulk-bar": {"Export": "Export" + verbSense}, |
| 146 | "seg-tabs": {"View": "View" + nounSense}, |
| 147 | } |
| 148 | |
| 149 | // sampleID is the id a sample string is traced under: its key, which is |
| 150 | // its English or, for a word in a sense, its English and the sense. |
| 151 | func sampleID(key string) string { return "samples." + key } |
| 152 | |
| 153 | // sampleCatalogs is every non-English locale's sample translations, |
| 154 | // read once from i18n/samples.<locale>.json: an English key to its |
| 155 | // translation, as Rastrillo's sampleProse rows are. |
| 156 | var sampleCatalogs = sync.OnceValues(func() (map[string]catalog, error) { |
| 157 | out := map[string]catalog{} |
| 158 | for _, locale := range Locales { |
| 159 | if locale == "en" { |
| 160 | continue |
| 161 | } |
| 162 | name := "i18n/samples." + locale + ".json" |
| 163 | b, err := fs.ReadFile(catalogFiles, name) |
| 164 | if err != nil { |
| 165 | return nil, fmt.Errorf("the %s sample catalog: %w", locale, err) |
| 166 | } |
| 167 | var c catalog |
| 168 | if err := json.Unmarshal(b, &c); err != nil { |
| 169 | return nil, fmt.Errorf("%s: %w", name, err) |
| 170 | } |
| 171 | out[locale] = c |
| 172 | } |
| 173 | return out, nil |
| 174 | }) |
| 175 | |
| 176 | // samplesIn is one locale's sample translations; nil for English. |
| 177 | func samplesIn(locale string) catalog { |
| 178 | cs, err := sampleCatalogs() |
| 179 | if err != nil { |
| 180 | return nil |
| 181 | } |
| 182 | return cs[locale] |
| 183 | } |
| 184 | |
| 185 | // sampleText is one sample string in locale, by its key: the catalog's |
| 186 | // translation, or the English (the key without its sense) for English |
| 187 | // and for a key the catalog does not answer, which the parity gate |
| 188 | // fails. Every lookup is traced. |
| 189 | func sampleText(locale, key string) string { |
| 190 | trace(sampleID(key)) |
| 191 | en := withoutSense(key) |
| 192 | if locale == "en" { |
| 193 | return en |
| 194 | } |
| 195 | if t := samplesIn(locale)[key]; t != "" { |
| 196 | return t |
| 197 | } |
| 198 | return en |
| 199 | } |
| 200 | |
| 201 | // controlStrings is the framework's own catalog for each locale, as the |
| 202 | // enhanced controls read it from a data-rst-<key> attribute: every |
| 203 | // string as it is, and the date-words vocabulary as its JSON, compact |
| 204 | // with its keys sorted, as the seeded documents write it. |
| 205 | var controlStrings = sync.OnceValues(func() (map[string]map[string]string, error) { |
| 206 | out := map[string]map[string]string{} |
| 207 | for _, locale := range Locales { |
| 208 | b, ok := fiesta.Strings(locale) |
| 209 | if !ok { |
| 210 | return nil, fmt.Errorf("the framework has no i18n/%s.json", locale) |
| 211 | } |
| 212 | var raw map[string]json.RawMessage |
| 213 | if err := json.Unmarshal(b, &raw); err != nil { |
| 214 | return nil, fmt.Errorf("i18n/%s.json: %w", locale, err) |
| 215 | } |
| 216 | table := map[string]string{} |
| 217 | for k, v := range raw { |
| 218 | var s string |
| 219 | if json.Unmarshal(v, &s) == nil { |
| 220 | table[k] = s |
| 221 | continue |
| 222 | } |
| 223 | var words map[string]string |
| 224 | if err := json.Unmarshal(v, &words); err != nil { |
| 225 | return nil, fmt.Errorf("i18n/%s.json: %s is neither a string nor a table of words", locale, k) |
| 226 | } |
| 227 | j, err := json.Marshal(words) |
| 228 | if err != nil { |
| 229 | return nil, err |
| 230 | } |
| 231 | table[k] = string(j) |
| 232 | } |
| 233 | out[locale] = table |
| 234 | } |
| 235 | return out, nil |
| 236 | }) |
| 237 | |
| 238 | // ── Markup ─────────────────────────────────────────────────────────── |
| 239 | |
| 240 | // spokenAttrs are the attributes a person reads or hears. Every other |
| 241 | // attribute is the machine's, including value on anything but a text |
| 242 | // input: an <option>'s value is what the form posts. Rastrillo's five, |
| 243 | // and alt, which the media grid's pictures carry and Rastrillo's |
| 244 | // samples do not. |
| 245 | var spokenAttrs = map[string]bool{ |
| 246 | "aria-label": true, "data-tip": true, "placeholder": true, "title": true, "label": true, |
| 247 | "alt": true, |
| 248 | } |
| 249 | |
| 250 | // keptElements hold content that is never translated: code, a drawing, |
| 251 | // a name (the convention throughout is that a person's name, an email |
| 252 | // address or a record's own words go in <bdi>), and the slots of a |
| 253 | // shell that carry the app's brand and its user. |
| 254 | var keptElements = map[string]bool{"svg": true, "code": true, "bdi": true, "style": true, "script": true} |
| 255 | |
| 256 | // keptAttrs mark an element whose content stays as written: Rastrillo's |
| 257 | // shell slots, and lang, which says the content is in a language of its |
| 258 | // own already (the language menu names each language in itself). |
| 259 | var keptAttrs = []string{"rst-shell-brand", "rst-person-name", "rst-person-email", "rst-person-av", "lang"} |
| 260 | |
| 261 | // phraseElements are the elements that sit inside a sentence. An |
| 262 | // element whose content is words and these, and nothing else, is |
| 263 | // translated as one sentence, markup included, so "Displaying |
| 264 | // <strong>1–20</strong> of <strong>412</strong>" can become a sentence |
| 265 | // with the two numbers the other way round. Translated word by word it |
| 266 | // could not: "of" has no translation that works in every order. |
| 267 | var phraseElements = map[string]bool{ |
| 268 | "a": true, "abbr": true, "b": true, "bdi": true, "code": true, "data": true, |
| 269 | "em": true, "i": true, "output": true, "small": true, "strong": true, "time": true, |
| 270 | } |
| 271 | |
| 272 | var voidElements = map[string]bool{ |
| 273 | "area": true, "br": true, "col": true, "embed": true, "hr": true, "img": true, |
| 274 | "input": true, "link": true, "meta": true, "source": true, "track": true, "wbr": true, |
| 275 | } |
| 276 | |
| 277 | // mtoken is one piece of a sample's markup: text, or a tag. |
| 278 | type mtoken struct { |
| 279 | raw string |
| 280 | tag string // the element's name; empty for text |
| 281 | close bool // </tag> |
| 282 | void bool // a void element, a self-closing SVG child, or a comment |
| 283 | } |
| 284 | |
| 285 | // tokenise splits markup into text and tags. It is not a general HTML |
| 286 | // parser and does not need to be: the samples are this repository's |
| 287 | // own, with every attribute quoted. A comment (the layouts' slot marks) |
| 288 | // is a tag that opens nothing. |
| 289 | func tokenise(src string) []mtoken { |
| 290 | var out []mtoken |
| 291 | for len(src) > 0 { |
| 292 | i := strings.IndexByte(src, '<') |
| 293 | if i != 0 { |
| 294 | if i < 0 { |
| 295 | i = len(src) |
| 296 | } |
| 297 | out = append(out, mtoken{raw: src[:i]}) |
| 298 | src = src[i:] |
| 299 | continue |
| 300 | } |
| 301 | j := markupTagEnd(src) |
| 302 | raw := src[:j] |
| 303 | src = src[j:] |
| 304 | t := mtoken{raw: raw} |
| 305 | name := strings.TrimPrefix(raw[1:], "/") |
| 306 | t.close = strings.HasPrefix(raw, "</") |
| 307 | if k := strings.IndexAny(name, " \t\n/>"); k >= 0 { |
| 308 | name = name[:k] |
| 309 | } |
| 310 | t.tag = strings.ToLower(name) |
| 311 | t.void = voidElements[t.tag] || strings.HasSuffix(raw, "/>") || strings.HasPrefix(raw, "<!") |
| 312 | out = append(out, t) |
| 313 | } |
| 314 | return out |
| 315 | } |
| 316 | |
| 317 | // markupTagEnd is the length of the tag at the start of src, quoted |
| 318 | // attribute values included: a > inside one does not end the tag. |
| 319 | // Rastrillo's tagEnd, renamed: frame.go has a tagEnd of its own. |
| 320 | func markupTagEnd(src string) int { |
| 321 | var quote byte |
| 322 | for i := 1; i < len(src); i++ { |
| 323 | switch c := src[i]; { |
| 324 | case quote != 0: |
| 325 | if c == quote { |
| 326 | quote = 0 |
| 327 | } |
| 328 | case c == '"' || c == '\'': |
| 329 | quote = c |
| 330 | case c == '>': |
| 331 | return i + 1 |
| 332 | } |
| 333 | } |
| 334 | return len(src) |
| 335 | } |
| 336 | |
| 337 | // closing is the index of the token that closes the element opened at |
| 338 | // toks[i], or len(toks) when nothing does. |
| 339 | func closing(toks []mtoken, i int) int { |
| 340 | depth := 0 |
| 341 | for j := i + 1; j < len(toks); j++ { |
| 342 | t := toks[j] |
| 343 | if t.tag != toks[i].tag || t.void { |
| 344 | continue |
| 345 | } |
| 346 | if !t.close { |
| 347 | depth++ |
| 348 | continue |
| 349 | } |
| 350 | if depth == 0 { |
| 351 | return j |
| 352 | } |
| 353 | depth-- |
| 354 | } |
| 355 | return len(toks) |
| 356 | } |
| 357 | |
| 358 | // localiser is one walk over a sample's markup: the locale the data-rst |
| 359 | // attributes are written in, the example's senses, and look, which |
| 360 | // turns a key into the text that replaces it. The renderer looks each |
| 361 | // key up in the locale; EnglishStrings collects them. Both walk with |
| 362 | // the same code, so they cannot ask for different strings. |
| 363 | type localiser struct { |
| 364 | locale string |
| 365 | senses map[string]string |
| 366 | look func(key string) string |
| 367 | } |
| 368 | |
| 369 | // key is the key a run of sample text is looked up by: its sense where |
| 370 | // the example names one, its English otherwise. |
| 371 | func (l localiser) key(s string) string { |
| 372 | if k, ok := l.senses[s]; ok { |
| 373 | return k |
| 374 | } |
| 375 | return s |
| 376 | } |
| 377 | |
| 378 | // localMarkup is one hand-written sample of the named example in one |
| 379 | // locale. In English it returns src byte for byte; anywhere else the |
| 380 | // only bytes that change are the text, the spoken attribute values and |
| 381 | // the enhanced controls' attributes it translates. |
| 382 | func localMarkup(locale, name, src string) string { |
| 383 | return walkMarkup(localiser{locale: locale, senses: sampleSenses[name], look: func(key string) string { |
| 384 | return sampleText(locale, key) |
| 385 | }}, src) |
| 386 | } |
| 387 | |
| 388 | // sampleKeys is every key localMarkup looks up in one sample, in order. |
| 389 | func sampleKeys(name, src string) []string { |
| 390 | var out []string |
| 391 | walkMarkup(localiser{locale: "en", senses: sampleSenses[name], look: func(key string) string { |
| 392 | out = append(out, key) |
| 393 | return withoutSense(key) |
| 394 | }}, src) |
| 395 | return out |
| 396 | } |
| 397 | |
| 398 | // walkMarkup is Rastrillo's localMarkup over a localiser. |
| 399 | func walkMarkup(l localiser, src string) string { |
| 400 | toks := tokenise(src) |
| 401 | var b strings.Builder |
| 402 | for i := 0; i < len(toks); i++ { |
| 403 | t := toks[i] |
| 404 | switch { |
| 405 | case t.tag == "": |
| 406 | b.WriteString(localText(l, t.raw)) |
| 407 | case t.close || t.void: |
| 408 | b.WriteString(localAttrs(l, t)) |
| 409 | default: |
| 410 | end := closing(toks, i) |
| 411 | b.WriteString(localAttrs(l, t)) |
| 412 | if keptElement(t) { |
| 413 | for _, k := range toks[i+1 : min(end+1, len(toks))] { |
| 414 | b.WriteString(k.raw) |
| 415 | } |
| 416 | i = end |
| 417 | continue |
| 418 | } |
| 419 | if isPhrase(toks[i+1 : end]) { |
| 420 | var inner strings.Builder |
| 421 | for _, k := range toks[i+1 : end] { |
| 422 | inner.WriteString(k.raw) |
| 423 | } |
| 424 | b.WriteString(localText(l, inner.String())) |
| 425 | if end < len(toks) { |
| 426 | b.WriteString(toks[end].raw) |
| 427 | } |
| 428 | i = end |
| 429 | } |
| 430 | } |
| 431 | } |
| 432 | return b.String() |
| 433 | } |
| 434 | |
| 435 | // keptElement says whether an element's content stays as written. |
| 436 | func keptElement(t mtoken) bool { |
| 437 | if keptElements[t.tag] { |
| 438 | return true |
| 439 | } |
| 440 | for _, a := range keptAttrs { |
| 441 | if strings.Contains(t.raw, " "+a+" ") || strings.Contains(t.raw, " "+a+">") || strings.Contains(t.raw, " "+a+"=") { |
| 442 | return true |
| 443 | } |
| 444 | } |
| 445 | return false |
| 446 | } |
| 447 | |
| 448 | // isPhrase says whether an element's content is one sentence: words of |
| 449 | // its own beside at least one element, and every element inside it one |
| 450 | // that sits in running text. |
| 451 | func isPhrase(inner []mtoken) bool { |
| 452 | words, elements := false, false |
| 453 | depth := 0 |
| 454 | for _, t := range inner { |
| 455 | switch { |
| 456 | case t.tag == "": |
| 457 | if depth == 0 && hasWords(html.UnescapeString(t.raw)) { |
| 458 | words = true |
| 459 | } |
| 460 | case !phraseElements[t.tag]: |
| 461 | return false |
| 462 | case t.close: |
| 463 | depth-- |
| 464 | default: |
| 465 | if depth == 0 { |
| 466 | elements = true |
| 467 | } |
| 468 | if !t.void { |
| 469 | depth++ |
| 470 | } |
| 471 | } |
| 472 | } |
| 473 | return words && elements |
| 474 | } |
| 475 | |
| 476 | // localText translates one run, keeping the whitespace around it where |
| 477 | // it was: the samples are indented, and the indent is not the sentence. |
| 478 | func localText(l localiser, raw string) string { |
| 479 | core := strings.TrimSpace(raw) |
| 480 | if core == "" || keepsAsWritten(stripTags(core)) { |
| 481 | return raw |
| 482 | } |
| 483 | lead := raw[:strings.Index(raw, core)] |
| 484 | return lead + l.look(l.key(core)) + raw[len(lead)+len(core):] |
| 485 | } |
| 486 | |
| 487 | // stripTags is a phrase's text with its markup taken out, for deciding |
| 488 | // whether there is anything in it to translate. |
| 489 | func stripTags(s string) string { |
| 490 | var b strings.Builder |
| 491 | for _, t := range tokenise(s) { |
| 492 | if t.tag == "" { |
| 493 | b.WriteString(t.raw) |
| 494 | } |
| 495 | } |
| 496 | return b.String() |
| 497 | } |
| 498 | |
| 499 | // spokenAttr matches one double-quoted attribute and its value. |
| 500 | var spokenAttr = regexp.MustCompile(`([a-z-]+)="([^"]*)"`) |
| 501 | |
| 502 | // controlAttr matches one of the enhanced controls' attributes and its |
| 503 | // value: data-rst- and the key the framework's catalog files it under. |
| 504 | var controlAttr = regexp.MustCompile(`(\sdata-rst-)([a-z0-9-]+)="([^"]*)"`) |
| 505 | |
| 506 | // localAttrs translates the spoken attributes of one tag. A text input's |
| 507 | // value is spoken too: it is what the field shows. Every data-rst-<key> |
| 508 | // whose key the framework's catalog has takes that catalog's value in |
| 509 | // the walk's locale, which is what the enhanced controls would have |
| 510 | // read from a script table. |
| 511 | func localAttrs(l localiser, t mtoken) string { |
| 512 | if t.close || !strings.Contains(t.raw, `="`) { |
| 513 | return t.raw |
| 514 | } |
| 515 | textInput := t.tag == "input" && (strings.Contains(t.raw, ` type="text"`) || !strings.Contains(t.raw, ` type="`)) |
| 516 | raw := spokenAttr.ReplaceAllStringFunc(t.raw, func(m string) string { |
| 517 | sub := spokenAttr.FindStringSubmatch(m) |
| 518 | if !(spokenAttrs[sub[1]] || textInput && sub[1] == "value") || keepsAsWritten(sub[2]) { |
| 519 | return m |
| 520 | } |
| 521 | return sub[1] + `="` + l.look(l.key(sub[2])) + `"` |
| 522 | }) |
| 523 | if !strings.Contains(raw, " data-rst-") { |
| 524 | return raw |
| 525 | } |
| 526 | tables, err := controlStrings() |
| 527 | if err != nil { |
| 528 | return raw |
| 529 | } |
| 530 | table := tables[l.locale] |
| 531 | return controlAttr.ReplaceAllStringFunc(raw, func(m string) string { |
| 532 | sub := controlAttr.FindStringSubmatch(m) |
| 533 | v, ok := table[sub[2]] |
| 534 | if !ok { |
| 535 | return m |
| 536 | } |
| 537 | return sub[1] + sub[2] + `="` + template.HTMLEscapeString(v) + `"` |
| 538 | }) |
| 539 | } |
| 540 | |
| 541 | // ── Documents ──────────────────────────────────────────────────────── |
| 542 | |
| 543 | var titleText = regexp.MustCompile(`<title>[^<]*</title>`) |
| 544 | |
| 545 | // localBody is a document with its body's markup through localMarkup; |
| 546 | // the head is left as it is. English is the document unchanged. |
| 547 | func localBody(locale, name, doc string) (string, error) { |
| 548 | if locale == "en" { |
| 549 | return doc, nil |
| 550 | } |
| 551 | body := bodyTag.FindStringIndex(doc) |
| 552 | end := strings.LastIndex(doc, "</body>") |
| 553 | if body == nil || end < body[1] { |
| 554 | return "", fmt.Errorf("no <body> to localise") |
| 555 | } |
| 556 | return doc[:body[1]] + localMarkup(locale, name, doc[body[1]:end]) + doc[end:], nil |
| 557 | } |
| 558 | |
| 559 | // localDocument is one state's document in locale: its body localised |
| 560 | // and its title the frame's (localTitle). English is the document as |
| 561 | // written. |
| 562 | func (s *site) localDocument(locale string, e example.Entry, st example.State, doc string) (string, error) { |
| 563 | doc, err := localBody(locale, e.Name, doc) |
| 564 | if err != nil { |
| 565 | return "", err |
| 566 | } |
| 567 | return s.localTitle(locale, e, st, doc) |
| 568 | } |
| 569 | |
| 570 | // localTitle is a state's document with its <title> the frame's title |
| 571 | // in the page's language, the example's name and the state's label, in |
| 572 | // place of the English the example wrote there. English is the |
| 573 | // document as written. |
| 574 | func (s *site) localTitle(locale string, e example.Entry, st example.State, doc string) (string, error) { |
| 575 | if locale == "en" { |
| 576 | return doc, nil |
| 577 | } |
| 578 | if n := len(titleText.FindAllStringIndex(doc, -1)); n != 1 { |
| 579 | return "", fmt.Errorf("the document has %d <title> elements, want one", n) |
| 580 | } |
| 581 | title := "<title>" + template.HTMLEscapeString(s.frameTitle(locale, e, st)) + "</title>" |
| 582 | return titleText.ReplaceAllLiteralString(doc, title), nil |
| 583 | } |
| 584 | |
| 585 | // localHTML is a document's <html> in the page's language and its |
| 586 | // direction. A document that does not open as English left to right |
| 587 | // is an error, so a seed written otherwise is not silently left as |
| 588 | // English. |
| 589 | func localHTML(doc, locale string) (string, error) { |
| 590 | if locale == "en" { |
| 591 | return doc, nil |
| 592 | } |
| 593 | if !strings.Contains(doc, ltrHTML) { |
| 594 | return "", fmt.Errorf("no %s to localise", ltrHTML) |
| 595 | } |
| 596 | return strings.Replace(doc, ltrHTML, `<html lang="`+locale+`" dir="`+Dir(locale)+`"`, 1), nil |
| 597 | } |
| 598 | |
| 599 | // localSample is one state's frame document and the code its HTML tab |
| 600 | // shows, in locale. The example's document is put in the page's |
| 601 | // language (localDocument) and then framed, so the walker reads the |
| 602 | // sample's own links and the frame's rewrites come after it; the code |
| 603 | // is the component's body as the frame shows it, or for a layout the |
| 604 | // whole document in the page's language. The money sample in its |
| 605 | // default state is the money table's markup for the locale, frame and |
| 606 | // code alike, bypassing the walker as Rastrillo's formatMarkup does: |
| 607 | // its amounts are already written for the locale, and its currency |
| 608 | // codes read as words. |
| 609 | func (s *site) localSample(theme, locale string, e example.Entry, st example.State) (frame, code string, err error) { |
| 610 | doc, err := example.Document(s.src, e.Name, st.ID) |
| 611 | if err != nil { |
| 612 | return "", "", err |
| 613 | } |
| 614 | // A layout's code is its whole document, so its body is not read |
| 615 | // again on its own. |
| 616 | var en string |
| 617 | if !e.Document { |
| 618 | if en, err = example.Markup(s.src, e.Name, st.ID); err != nil { |
| 619 | return "", "", err |
| 620 | } |
| 621 | } |
| 622 | if e.Name == moneyExample && st.ID == e.Default && !e.Document { |
| 623 | money, ok := s.moneyBody(locale) |
| 624 | if !ok { |
| 625 | return "", "", fmt.Errorf("i18n/money.json has no %s sample", locale) |
| 626 | } |
| 627 | if strings.Count(doc, en) != 1 { |
| 628 | return "", "", errors.New("the body is not where the money table can replace it") |
| 629 | } |
| 630 | if doc, err = s.localTitle(locale, e, st, strings.Replace(doc, en, money, 1)); err != nil { |
| 631 | return "", "", err |
| 632 | } |
| 633 | code = money |
| 634 | } else { |
| 635 | if doc, err = s.localDocument(locale, e, st, doc); err != nil { |
| 636 | return "", "", err |
| 637 | } |
| 638 | if !e.Document { |
| 639 | code = localMarkup(locale, e.Name, en) |
| 640 | } |
| 641 | } |
| 642 | if frame, err = s.frame(doc, theme, locale, e, st.ID); err != nil { |
| 643 | return "", "", err |
| 644 | } |
| 645 | if e.Document { |
| 646 | code, err = localHTML(doc, locale) |
| 647 | } |
| 648 | return frame, code, err |
| 649 | } |
| 650 | |
| 651 | // sampleSources is every sample the renderer puts through localMarkup, |
| 652 | // by the example (or document) whose senses apply: each example state's |
| 653 | // body, the money sample's default excepted; the demo application's |
| 654 | // content, with the gallery's own sentences it carries held out; and |
| 655 | // the demo's two rail labels. EnglishStrings collects the sample keys |
| 656 | // from these, with the walker the renderer uses. |
| 657 | func sampleSources(src fs.FS, m *example.Manifest) ([][2]string, error) { |
| 658 | var out [][2]string |
| 659 | for _, e := range m.Examples { |
| 660 | for _, st := range e.States { |
| 661 | if e.Name == moneyExample && st.ID == e.Default { |
| 662 | continue |
| 663 | } |
| 664 | markup, err := example.Markup(src, e.Name, st.ID) |
| 665 | if err != nil { |
| 666 | return nil, err |
| 667 | } |
| 668 | out = append(out, [2]string{e.Name, markup}) |
| 669 | } |
| 670 | } |
| 671 | for _, view := range demoViews[1:] { |
| 672 | content, err := demoContent(view, demoData{Back: demoBackHeld, Callout: demoCalloutHeld}) |
| 673 | if err != nil { |
| 674 | return nil, err |
| 675 | } |
| 676 | out = append(out, [2]string{"demo", content}) |
| 677 | } |
| 678 | for _, label := range demoRail { |
| 679 | out = append(out, [2]string{"demo", label.label}) |
| 680 | } |
| 681 | return out, nil |
| 682 | } |
| 683 | |
amadan