{"id":34906,"date":"2019-10-31T22:01:11","date_gmt":"2019-10-31T19:01:11","guid":{"rendered":"https:\/\/prohoster.info\/blog\/yacc-pre-bison-parser-v-bash-skript-realizatsiya-jq-na-bash\/"},"modified":"2019-10-31T22:01:11","modified_gmt":"2019-10-31T19:01:11","slug":"yacc-pre-bison-parser-v-bash-skript-realizatsiya-jq-na-bash","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/yacc-pre-bison-parser-v-bash-skript-realizatsiya-jq-na-bash","title":{"rendered":"parser yacc (pre-bison) in bash-script. Implementazione di jq su bash","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>A volte si presenta il problema di scrivere un piccolo script intelligente che comprenda una certa grammatica integrata, ovvero con un mini-linguaggio all'interno. Inizialmente ho scritto un'implementazione minima di jq in bash. Ma man mano che aggiungevo \"intelligenza\", diventava sempre pi\u00f9 difficile implementare l'analisi ricorsiva delle sottoespressioni. Questo mi ha cos\u00ec frustrato da spingermi prima a scrivere un compilatore LARL(1) yacc (pre-bison) per generare uno script bash, e poi, come per magia, ho ottenuto un codice di prova molto simile all'originale e di buona qualit\u00e0 per yacc_bash.c, un mini-jq in bash.<\/p>\n<p>Articolo completo: <\/p>\n<p>Fonte: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"http:\/\/www.linux.org.ru\/news\/opensource\/15029405\">linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0418\u043d\u043e\u0433\u0434\u0430 \u0432\u043e\u0437\u043d\u0438\u043a\u0430\u0435\u0442 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043d\u0430\u043f\u0438\u0441\u0430\u0442\u044c \u043d\u0435\u0431\u043e\u043b\u044c\u0448\u043e\u0439 \u0443\u043c\u043d\u044b\u0439 \u0441\u043a\u0440\u0438\u043f\u0442, \u043f\u043e\u043d\u0438\u043c\u0430\u044e\u0449\u0438\u0439 \u043d\u0435\u043a\u0443\u044e \u0432\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u0443\u044e \u0433\u0440\u0430\u043c\u043c\u0430\u0442\u0438\u043a\u0443, \u0442\u043e \u0435\u0441\u0442\u044c \u0441 \u043c\u0438\u043d\u0438\u044f\u0437\u044b\u043a\u043e\u043c \u0432\u043d\u0443\u0442\u0440\u044f\u0445. \u0418\u0437\u043d\u0430\u0447\u0430\u043b\u044c\u043d\u043e \u044f \u043d\u0430\u043f\u0438\u0441\u0430\u043b \u043c\u0438\u043d\u0438\u043c\u0430\u043b\u044c\u043d\u0443\u044e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e jq \u043d\u0430 bash. \u041d\u043e \u0447\u0435\u043c \u0431\u043e\u043b\u044c\u0448\u0435 \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u043b\u043e\u0441\u044c \u0442\u0443\u0434\u0430 &#171;\u0443\u043c\u043d\u043e\u0441\u0442\u0438&#187;, \u0442\u0435\u043c \u0442\u0440\u0443\u0434\u043d\u0435\u0435 \u043f\u0440\u0438\u0445\u043e\u0434\u0438\u043b\u043e\u0441\u044c \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u044b\u0432\u0430\u0442\u044c \u0440\u0435\u043a\u0443\u0440\u0441\u0438\u0432\u043d\u044b\u0439 \u0440\u0430\u0437\u0431\u043e\u0440 \u043f\u043e\u0434\u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0439. \u042d\u0442\u043e \u0442\u0430\u043a \u043d\u0430\u0434\u043e\u0435\u043b\u043e, \u0447\u0442\u043e \u0441\u043f\u043e\u0434\u0432\u0438\u0433\u043b\u043e \u043d\u0430\u043f\u0438\u0441\u0430\u0442\u044c \u0432\u043d\u0430\u0447\u0430\u043b\u0435 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0442\u043e\u0440 LARL(1) yacc (pre-bison) \u0434\u043b\u044f \u0433\u0435\u043d\u0435\u0440\u0430\u0446\u0438\u0438 bash-\u0441\u043a\u0440\u0438\u043f\u0442\u0430, \u0430 \u043f\u043e\u0442\u043e\u043c \u043a\u0430\u043a \u043f\u043e [&hellip;]<\/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-34906","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - 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Implementazione di jq in bash | ProHoster","description":"A volte si presenta il problema di scrivere un piccolo script intelligente che comprenda una certa grammatica incorporata, ovvero un mini-linguaggio interno. 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