1 files changed, 59 insertions, 0 deletions
diff --git a/src/cmd/troff.js b/src/cmd/troff.js
new file mode 100644
index 0000000..91090a5
--- /dev/null
+++ b/src/cmd/troff.js
@@ -0,0 +1,59 @@
+const spawn = require('child_process').spawn;
+const fs = require('fs');
+const { ConsoleTransportOptions } = require('winston/lib/winston/transports');
+
+/*
+\\"".fp - R cmunrm
+\\"".fp - I cmunti
+\\"".fp - B cmunrb
+\\"".fp - BI cmunbi
+*/
+
+const prelude = `
+.fp - CMEX CMEX10
+.fp - CMSY CMSY10
+.fp - CMMI CMMI10
+.fp - CB CB
+.fspecial R CMEX CMSY
+.fspecial I CMMI
+
+.EQ
+define <=> %{vcenter roman " \\\\N'arrowdblboth' "}%
+define appr %{vcenter roman "≈"}%
+define intd %{vcenter roman "\\\\N'integraldisplay'"}%
+delim $$
+.EN
+
+.LP
+.ps +20
+\\m[white]
+`;
+
+module.exports.loadModule = function loadModule(bot) {
+    bot.handler.endpoint(/^tr(?:off)?!?(?: |\n)([\s\S]*)$/m, [], (match, message) => {
+        ma = match[1].replace(/^\.sy\s.*$/gm, '');
+		ma = ma.replace(/^sh\s.*$/gm, '');
+		ma = ma.replace(/^\.?co\s.*$/gm, '');
+		ma = ma.replace(/^\\X.*$/gm, '');
+		if (ma !== match[1]) console.log('had to sanitize');
+        const subprocess0 = spawn('pic');
+        console.log(ma);
+        subprocess0.stdin.write(prelude + '\n' + ma + '\n');
+        subprocess0.stdin.end();
+        const subprocess1 = spawn('eqn');
+        subprocess0.stdout.pipe(subprocess1.stdin);
+        const subprocess2 = spawn('roff', ['-ms']);
+        subprocess1.stdout.pipe(subprocess2.stdin);
+        const subprocess3 = spawn('pdf', ['-p', '10000x10000']);
+        subprocess2.stdout.pipe(subprocess3.stdin);
+        const subprocess4 = spawn('convert', ['-', '-trim', 'png:-']);
+        subprocess3.stdout.pipe(subprocess4.stdin);
+        let ch = Buffer.from("");
+        subprocess4.stdout.on('data', (data) => {
+            ch = Buffer.concat([ch, data]);
+        });
+        subprocess4.stdout.on('end', () => {
+            message.channel.createMessage('', {name: 'troff.png', file: ch});
+        });
+    });
+};