{"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\/de\/blog\/news\/yacc-pre-bison-parser-v-bash-skript-realizatsiya-jq-na-bash","title":{"rendered":"yacc (pre-bison) Parser in Bash-Skript. Implementierung von jq in Bash","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Manchmal gibt es das Problem, ein kleines intelligentes Skript zu schreiben, das eine eingebaute Grammatik versteht, also eine Art von Mini-Sprache. Urspr\u00fcnglich schrieb ich eine minimale Implementierung von jq in Bash. Aber je mehr \"Intelligenz\" hinzugef\u00fcgt wurde, desto schwieriger wurde es, eine rekursive Analyse von Teilausdr\u00fccken zu implementieren. Das wurde so frustrierend, dass ich schlie\u00dflich einen LARL(1) yacc (pre-bison) Compiler schrieb, um Bash-Skripte zu generieren, und danach entstand dann fast problemlos ein ziemlich \u00e4hnlicher und guter Testcode f\u00fcr yacc_bash.c, das Mini-jq in Bash.<\/p>\n

Vollst\u00e4ndiger Artikel: <\/p>\n

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

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