{"id":74805,"date":"2020-03-20T20:42:28","date_gmt":"2020-03-20T17:42:28","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/ttf-parser-0-5-novaya-biblioteka-dlya-raboty-s-truetype-shriftami"},"modified":"2020-03-20T20:42:28","modified_gmt":"2020-03-20T17:42:28","slug":"ttf-parser-0-5-novaya-biblioteka-dlya-raboty-s-truetype-shriftami","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/ttf-parser-0-5-novaya-biblioteka-dlya-raboty-s-truetype-shriftami","title":{"rendered":"ttf-parser 0.5 \u2014 uus teek TrueType fontide t\u00f6\u00f6tlemiseks","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

<\/p>\n

ttf-parser<\/a> \u2014 see on TrueType\/OpenType fontide t\u00f5lgendamise raamatukogu.<\/noindex>
\nUues versioonis on t\u00e4ismahus toetamine muutuvaid fonte.
\n(muutuvad fondid<\/a>) ja C API, mille t\u00f5ttu otsustasin seda reklaamida lorus.<\/p>\n

Kuni hiljutiseni, kui oli vaja t\u00f6\u00f6tada TrueType fondidega, oli ainult kaks varianti: FreeType ja stb_truetype. Esimene on suur kombinaator, teine toetab \u00fcsna piiratud hulka funktsioone.<\/p>\n

ttf-parser asub kuskil keskel. See toetab k\u00f5iki samu TrueType tabeleid (TrueType formaat koosneb paljusid eraldi binaartabelitest), mis FreeType, kuid ei tegele gl\u00fcfide joonistamisega.<\/p>\n

Sellegipoolest sisaldab ttf-parser palju muid olulisi erinevusi:<\/p>\n

    \n
  1. ttf-parser on kirjutatud Rustis, ilma unsafe kasutamata. FreeType ja stb_truetype on kirjutatud C-s.<\/li>\n
  2. ttf-parser on ainus ohutu (memory-safe) rakendus. Juhusliku m\u00e4lu lugemine on v\u00f5imatu. FreeType'il parandatakse pidevalt haavatavusi ja stb_truetype ei ole sisuliselt ette n\u00e4htud juhuslike fondide lugemiseks.<\/li>\n
  3. ttf-parser on ainus thread-safe teostus. K\u00f5ik t\u00f5lgendamismeetodid on konstantsete omadustega. Ainsaks erandiks on koordinaatide m\u00e4\u00e4ramine muutuvate fontide jaoks, kuid see funktsioon on reentrant. FreeType on p\u00f5him\u00f5tteliselt \u00fcheaegne. stb_truetype \u2014 reentrant (v\u00f5ib kasutada erinevaid koopiad erinevates kihtides, kuid mitte \u00fcht ja sama mitmes kihtis).<\/li>\n
  4. ttf-parser on ainus teostus, mis ei kasuta m\u00e4lu eraldamist \u201ekuhjas\u201c. See v\u00f5imaldab kiirendada t\u00f5lgendamist ja v\u00e4ltida probleeme OOM-i korral.<\/li>\n
  5. Samuti kontrollitakse peaaegu k\u00f5iki aritmeetilisi tehteid ja numbriliste t\u00fc\u00fcpide teisendusi (sealhulgas staatiliselt).<\/li>\n
  6. K\u00f5ige halvemal juhul v\u00f5ib teek visata erandi. Sel juhul C API-s erandid p\u00fc\u00fctakse ja funktsioon tagastab vea, kuid ei kuku.<\/li>\n<\/ol>\n

    <\/p>\n

    Ja hoolimata k\u00f5igist turvalisuse garantiiidest on ttf-parser ka k\u00f5ige kiirem teostus. N\u00e4iteks CFF2 parsimine on 3,5 korda kiirem kui FreeType'i puhul. Glyfide parsimine on samal ajal 10% aeglasem kui stb_truetype'i puhul, kuid see on tingitud sellest, et see ei toeta muutuvaid fonte, mille rakendamiseks on vajalik t\u00e4iendava info hoidmine. Rohkem \u00fcksikasju. README<\/a>.<\/p>\n

    <\/noindex><\/p>\n

    Allikas: linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

    ttf-parser — \u044d\u0442\u043e \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 \u0434\u043b\u044f \u0440\u0430\u0437\u0431\u043e\u0440\u0430 TrueType\/OpenType \u0448\u0440\u0438\u0444\u0442\u043e\u0432. \u0412 \u043d\u043e\u0432\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 \u043f\u043e\u044f\u0432\u0438\u043b\u0430\u0441\u044c \u043f\u043e\u043b\u043d\u043e\u0446\u0435\u043d\u043d\u0430\u044f \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0445 \u0448\u0440\u0438\u0444\u0442\u043e\u0432 (variable fonts) \u0438 C API, \u0432\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u0435 \u0447\u0435\u0433\u043e \u044f \u0440\u0435\u0448\u0438\u043b \u043f\u0440\u043e\u0440\u0435\u043a\u043b\u0430\u043c\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0435\u0451 \u043d\u0430 \u043b\u043e\u0440\u0435. \u0414\u043e \u043d\u0435\u0434\u0430\u0432\u043d\u0435\u0433\u043e \u0432\u0440\u0435\u043c\u0435\u043d\u0438, \u0435\u0441\u043b\u0438 \u0431\u044b\u043b\u0430 \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e\u0441\u0442\u044c \u0440\u0430\u0431\u043e\u0442\u044b \u0441 TrueType \u0448\u0440\u0438\u0444\u0442\u0430\u043c\u0438, \u0431\u044b\u043b\u043e \u0440\u043e\u0432\u043d\u043e \u0434\u0432\u0430 \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u0430: FreeType \u0438 stb_truetype. \u041f\u0435\u0440\u0432\u044b\u0439 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043e\u0433\u0440\u043e\u043c\u043d\u044b\u043c \u043a\u043e\u043c\u0431\u0430\u0439\u043d\u043e\u043c, \u0432\u0442\u043e\u0440\u043e\u0439 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 \u0434\u043e\u0432\u043e\u043b\u044c\u043d\u043e \u043d\u0435\u0431\u043e\u043b\u044c\u0448\u043e\u0435 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-74805","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47ttf-parser 0.5 \u2014 uus raamatukogu TrueType fontide jaoks | ProHoster","description":"ttf-parser \u2014 see raamatukogu TrueType\/OpenType-fontide anal\u00fc\u00fcsimiseks. 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Esimene on hiiglaslik kombain, teine toetab \u00fcsna v\u00e4ikest arvu.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/ttf-parser-0-5-novaya-biblioteka-dlya-raboty-s-truetype-shriftami","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47ttf-parser 0.5 \u2014 \u043d\u043e\u0432\u0430\u044f \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0441 TrueType \u0448\u0440\u0438\u0444\u0442\u0430\u043c\u0438 | ProHoster","og:description":"ttf-parser \u2014 \u044d\u0442\u043e \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 \u0434\u043b\u044f \u0440\u0430\u0437\u0431\u043e\u0440\u0430 TrueType\/OpenType \u0448\u0440\u0438\u0444\u0442\u043e\u0432. \u0412 \u043d\u043e\u0432\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 \u043f\u043e\u044f\u0432\u0438\u043b\u0430\u0441\u044c \u043f\u043e\u043b\u043d\u043e\u0446\u0435\u043d\u043d\u0430\u044f \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0445 \u0448\u0440\u0438\u0444\u0442\u043e\u0432 (variable fonts) \u0438 C API, \u0432\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u0435 \u0447\u0435\u0433\u043e \u044f \u0440\u0435\u0448\u0438\u043b \u043f\u0440\u043e\u0440\u0435\u043a\u043b\u0430\u043c\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0435\u0451 \u043d\u0430 \u043b\u043e\u0440\u0435. \u0414\u043e \u043d\u0435\u0434\u0430\u0432\u043d\u0435\u0433\u043e \u0432\u0440\u0435\u043c\u0435\u043d\u0438, 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