git.kianting.info Git - clo/blob - src/index.ts

   1 var fs = require('fs');
   2 var argv : any = require('minimist')(process.argv.slice(2));
   3
   4 import * as parser from "./parser.js";
   5
   6 /**
   7  * help for inputing `--help` parameter.
   8  */
   9 export let helpDesc =
  10 `
  11 clo: clo INPUT_FILE --output-js OUTPUT_JS_FILE
  12
  13 \ta little typesetter powered by TypeScript/Javascript.
  14
  15 ## Arguments
  16 INPUT_FILE\tan input .clo file
  17
  18 ## Parameters
  19 ---
  20 --output-js\tgenerated the output middle JS file
  21
  22
  23 Report bugs to: clo@kianting.info
  24 clo home page: <https://kianting.info/wiki/w/Project:Clo>
  25 `
  26
  27 processArgv(argv, helpDesc);
  28
  29 /**
  30  * processing the passed `argv` (arguments)
  31  */
  32
  33 export function processArgv(argv : any, helpDesc : string){
  34     let inputFile : string[] = argv['_'];
  35     let outputJSFile : string | true = argv['output-js'];
  36
  37     let NoInputFile : boolean = (inputFile.length == 0);
  38     let NoOutputJSFile : boolean = (outputJSFile === undefined || outputJSFile == true);
  39     let helpTriggered : boolean = argv['help'];
  40
  41     if (inputFile.length > 1){
  42         console.log("Sorry, the input file should be only one.");
  43     }
  44
  45     /** output --help */
  46     if (helpTriggered || NoInputFile || NoOutputJSFile){
  47         console.log(helpDesc);
  48     }else{
  49         fs.readFile(inputFile[0], 'utf8', (err : Error, inputText : string) => {
  50             if (err) throw err;
  51
  52             let tree = parser.inputTextToTree(inputText);
  53
  54             let output = parser.treeToJS(tree);
  55
  56             fs.writeFile(outputJSFile, output , (err : Error) => {
  57                 if (err) throw err;
  58               });
  59
  60           });
  61     }
  62
  63 }
  64
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