85 lines
2.6 KiB
JavaScript
Executable File
85 lines
2.6 KiB
JavaScript
Executable File
#!/usr/bin/env node
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/* js-codepage (C) 2014 SheetJS -- http://sheetjs.com */
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/* vim: set ts=2 ft=javascript: */
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var codepage = require('../');
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var fs = require('fs'), program = require('commander');
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program
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.version(codepage.version)
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.usage('[options] <file>')
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.option('-f, --from-code <code>', 'codepage of input (default 65001 utf8)')
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.option('-t, --to-code <code>', 'codepage of output (default 65001 utf8)')
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.option('-o, --output <file>', 'output file (<file>.<to> if specified)')
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.option('-B, --bom', 'write BOM (for unicode codepages)')
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.option('-F, --force', 'force writing to stdout for non-utf8 codepages')
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.option('-l, --list', 'List supported codepages');
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program.on('--help', function() {
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console.log(' Codepage descriptions can be found in the README');
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console.log(' http://oss.sheetjs.com/js-codepage/README.md');
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console.log(' Support email: dev.codepage@sheetjs.com');
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});
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program.parse(process.argv);
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if(program.list) {
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Object.keys(codepage).forEach(function(x) { if(+x == x) console.log(x); });
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process.exit();
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}
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var fr = +program.fromCode || 65001;
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var to = +program.toCode || 65001;
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var f = program.args[0];
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var o = program.output;
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if(!process.stdin.isTTY) f = f || "-";
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if(f !== "-" && !fs.existsSync(f)) {
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console.error('codepage: must specify a filename');
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process.exit(13);
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}
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if(f === "-") process.stdin.pipe(require('concat-stream')(process_text));
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else process_text(fs.readFileSync(f));
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function process_text(text) {
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var dec = codepage.utils.decode(fr, text);
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var bom = {
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1200: new Buffer([0xFF, 0xFE]),
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1201: new Buffer([0xFE, 0xFF]),
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12000: new Buffer([0xFF, 0xFE, 0x00, 0x00]),
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12001: new Buffer([0x00, 0x00, 0xFE, 0xFF]),
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16969: new Buffer([0x69, 0x69]),
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65000: new Buffer([0x2B, 0x2F, 0x76, 0x2B]),
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65001: new Buffer([0xEF, 0xBB, 0xBF])
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}
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var mybom = (program.bom && bom[fr] ? bom[fr] : "");
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var out = to === 65001 ? dec.toString('utf8') : codepage.utils.encode(to, dec);
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/* if output file is specified */
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if(o) writefile(o, out, mybom);
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/* utf8 -> print to stdout */
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else if(to === 65001) logit(out, mybom);
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/* stdout piped to process -> print */
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else if(!process.stdout.isTTY) logit(out, mybom);
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/* forced */
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else if(program.force) logit(out, mybom);
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/* input file specified -> write to file */
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else if(f !== "-") writefile(f + "." + to, out, mybom);
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else {
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console.error('codepage: use force (-F, --force) to print ' + to + ' codes');
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process.exit(14);
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}
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}
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function logit(out, bom) {
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process.stdout.write(bom);
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process.stdout.write(out);
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}
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function writefile(o, out, bom) {
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fs.writeFileSync(o, bom);
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fs.appendFileSync(o, out);
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}
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