printj/bin/printj.njs

63 lines
2.2 KiB
JavaScript
Executable File

#!/usr/bin/env node
/* printj.js (C) 2016-present SheetJS -- http://sheetjs.com */
/* vim: set ts=2 ft=javascript: */
var X = require("../"), argv = process.argv;
function help() {
[
"usage: printj [options] <format> [args...]",
"",
"Options:",
" -h, --help output usage information",
" -d, --dump print debug information about format string",
"",
"Arguments are treated as strings unless prefaced by a type indicator:",
" n:<integer> call parseInt (ex. n:3 -> 3)",
" f:<float> call parseFloat (ex. f:3.1 -> 3.1)",
' b:<boolean> false when lowercase value is "FALSE" or "0", else true',
" s:<string> interpret as string (ex. s:n:3 -> \"n:3\")",
" j:<JSON> interpret as an object using JSON.parse",
" e:<JS> evaluate argument (ex. e:1+1 -> 2, e:\"1\"+1 -> \"11\")",
"",
"samples:",
" $ printj '|%02hhx%d|' n:50 e:0x7B # |32123|",
" $ printj '|%2$d + %3$d is %1$d|' e:1+2 n:1 n:2 # |1 + 2 is 3| ",
" $ printj '|%s is %s|' s:1+2 e:1+2 # |1+2 is 3|",
" $ printj '|%c %c|' s:69 n:69 # |6 E|",
"",
"Support email: dev@sheetjs.com",
"Web Demo: http://oss.sheetjs.com/printj/"
].forEach(function(l) { console.log(l); });
return 0;
}
function parse_arg(arg/*:string*/)/*:any*/ {
var m = arg.substr(2), p/*:number*/;
if(arg.charCodeAt(1) == 58) switch((p = arg.charCodeAt(0))) {
case /*n*/ 110: return parseInt(m);
case /*f*/ 102: return parseFloat(m);
case /*b*/ 98: return !(m.toUpperCase() == "FALSE" || m == "0");
case /*j*/ 106: return JSON.parse(m);
case /*e*/ 101: return eval(m);
case /*s*/ 115: return m;
}
return arg;
}
var args/*:Array<any>*/ = [];
var fmt = "", n = 0;
for(var i = 2; i < argv.length; ++i) switch(argv[i]) {
case "--help": case "-h": process.exit(help());
case "--dump": case "-d": if(fmt.length==0) fmt = argv[++i]; process.exit(dump(fmt));
default: if(n++ == 0) fmt = argv[i]; else args.push(parse_arg(argv[i]));
}
console.log(X.vsprintf(fmt, args));
process.exit(0);
function dump(fmt) {
if(!fmt) { console.error("printj: missing format argument"); return 1; }
X._tokenize(fmt).forEach(function(x){console.log(x);});
return 0;
}