Add MVP 🚀

.gitignore

@@ -0,0 +1 @@
+node_modules

README.md

@@ -39,3 +39,7 @@ Cons:
 - Will require all latex code to be properly encapsulated
 - Further development will be harder
 
+## Acknowledgements
+- pandoc
+- The code used to convert asciimath to latex was taken from [here](https://github.com/asciimath/asciimathml/blob/master/asciimath-based/ASCIIMathTeXImg.js). For more information check the License text in `ASCIIMathTeXImg.js`.
+

index.js

@@ -0,0 +1,30 @@
+#!/usr/bin/env node
+
+const fs = require('fs')
+const path = require('path')
+const child_process = require("child_process");
+let input = fs.readFileSync(0, 'utf-8')
+
+input=replaceLiteral(input, "€€")
+input=replaceLiteral(input, "€")
+
+console.log(input)
+
+const pandocFilterPath = path.join(__dirname, "pandoc-filter.js")
+
+let result = child_process.spawnSync("pandoc", ["-t", "latex", "-f", "markdown+lists_without_preceding_blankline+hard_line_breaks", "-s", "--filter", pandocFilterPath], { input: input }).stdout
+
+console.log(String(result))
+
+fs.writeFileSync("input.tex", String(result))
+
+function replaceLiteral(input, literal){
+	let position=input.indexOf(literal)
+	let first=true
+	while(position!=-1){
+		input=input.substring(0, position)+"\n\`\`\`"+(first?"asciimath"+String(literal.length):"")+"\n"+input.substring(position+2, input.length)
+		first=!first
+		position=input.indexOf("€€")
+	}
+	return input
+}

package.json

@@ -0,0 +1,28 @@
+{
+  "name": "caoutchouc",
+  "version": "0.1.0",
+  "description": "Caoutchouc compiler",
+  "main": "index.js",
+  "directories": {
+    "test": "tests"
+  },
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/corollari/caoutchouc.git"
+  },
+  "keywords": [
+    "latex"
+  ],
+  "author": "corollari",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/corollari/caoutchouc/issues"
+  },
+  "homepage": "https://github.com/corollari/caoutchouc#readme",
+  "dependencies": {
+    "pandoc-filter-promisified": "^0.1.0"
+  }
+}

pandoc-filter.js

@@ -0,0 +1,33 @@
+#!/usr/bin/env node
+
+const pandoc = require('pandoc-filter-promisified')
+const AsciiMath2Latex = require('./lib/ASCIIMathTeXImg.js')
+const { CodeBlock, RawBlock } = pandoc
+
+const HEADER = "asciimath"
+
+pandoc.stdio(action)
+
+async function action(elt, pandocOutputFormat, meta) {
+  if (elt.t === `CodeBlock`) {
+    // console.warn(JSON.stringify(elt, null, 4));
+    const [headers, content] = elt.c
+
+    const literalLength = getAsciiMathLiteral(headers)
+    if(literalLength === 0) return
+
+    const literal = literalLength==2?"$$":"$"
+
+    let newContent = literal+AsciiMath2Latex(content)+literal
+
+    return RawBlock('latex', newContent)
+  }
+}
+
+function getAsciiMathLiteral(headers) {
+  const [_, classes, keyValuePairs] = headers
+
+  if(classes.includes(HEADER+"1")) return 1
+  if(classes.includes(HEADER+"2")) return 2
+  return 0
+}

tests/asciimath.cau

@@ -0,0 +1,3 @@
+€€
+1/2*alpha
+€€

tests/asciimath.tex

@@ -0,0 +1,61 @@
+\PassOptionsToPackage{unicode=true}{hyperref} % options for packages loaded elsewhere
+\PassOptionsToPackage{hyphens}{url}
+%
+\documentclass[]{article}
+\usepackage{lmodern}
+\usepackage{amssymb,amsmath}
+\usepackage{ifxetex,ifluatex}
+\usepackage{fixltx2e} % provides \textsubscript
+\ifnum 0\ifxetex 1\fi\ifluatex 1\fi=0 % if pdftex
+  \usepackage[T1]{fontenc}
+  \usepackage[utf8]{inputenc}
+  \usepackage{textcomp} % provides euro and other symbols
+\else % if luatex or xelatex
+  \usepackage{unicode-math}
+  \defaultfontfeatures{Ligatures=TeX,Scale=MatchLowercase}
+\fi
+% use upquote if available, for straight quotes in verbatim environments
+\IfFileExists{upquote.sty}{\usepackage{upquote}}{}
+% use microtype if available
+\IfFileExists{microtype.sty}{%
+\usepackage[]{microtype}
+\UseMicrotypeSet[protrusion]{basicmath} % disable protrusion for tt fonts
+}{}
+\IfFileExists{parskip.sty}{%
+\usepackage{parskip}
+}{% else
+\setlength{\parindent}{0pt}
+\setlength{\parskip}{6pt plus 2pt minus 1pt}
+}
+\usepackage{hyperref}
+\hypersetup{
+            pdfborder={0 0 0},
+            breaklinks=true}
+\urlstyle{same}  % don't use monospace font for urls
+\setlength{\emergencystretch}{3em}  % prevent overfull lines
+\providecommand{\tightlist}{%
+  \setlength{\itemsep}{0pt}\setlength{\parskip}{0pt}}
+\setcounter{secnumdepth}{0}
+% Redefines (sub)paragraphs to behave more like sections
+\ifx\paragraph\undefined\else
+\let\oldparagraph\paragraph
+\renewcommand{\paragraph}[1]{\oldparagraph{#1}\mbox{}}
+\fi
+\ifx\subparagraph\undefined\else
+\let\oldsubparagraph\subparagraph
+\renewcommand{\subparagraph}[1]{\oldsubparagraph{#1}\mbox{}}
+\fi
+
+% set default figure placement to htbp
+\makeatletter
+\def\fps@figure{htbp}
+\makeatother
+
+
+\date{}
+
+\begin{document}
+
+$$\frac{{1}}{{2}}\cdot\alpha$$
+
+\end{document}

tests/basic.cau

@@ -0,0 +1,8 @@
+# Header
+This is a basic equation €1+2*sqrt(2)-pi+alpha/(3.2-1)€  
+Display math:
+€€
+sum 1
+€€
+More complex things can be done with latex:
+$$x\overset{\Bbb{R}}{+} y=x\overset{\Bbb{Q}}{+} y$$

tests/intermediate-asciimath.cau

@@ -0,0 +1,3 @@
+```asciimath2
+1/2*alpha
+```

tests/intermediate-asciimath.tex

@@ -0,0 +1,61 @@
+\PassOptionsToPackage{unicode=true}{hyperref} % options for packages loaded elsewhere
+\PassOptionsToPackage{hyphens}{url}
+%
+\documentclass[]{article}
+\usepackage{lmodern}
+\usepackage{amssymb,amsmath}
+\usepackage{ifxetex,ifluatex}
+\usepackage{fixltx2e} % provides \textsubscript
+\ifnum 0\ifxetex 1\fi\ifluatex 1\fi=0 % if pdftex
+  \usepackage[T1]{fontenc}
+  \usepackage[utf8]{inputenc}
+  \usepackage{textcomp} % provides euro and other symbols
+\else % if luatex or xelatex
+  \usepackage{unicode-math}
+  \defaultfontfeatures{Ligatures=TeX,Scale=MatchLowercase}
+\fi
+% use upquote if available, for straight quotes in verbatim environments
+\IfFileExists{upquote.sty}{\usepackage{upquote}}{}
+% use microtype if available
+\IfFileExists{microtype.sty}{%
+\usepackage[]{microtype}
+\UseMicrotypeSet[protrusion]{basicmath} % disable protrusion for tt fonts
+}{}
+\IfFileExists{parskip.sty}{%
+\usepackage{parskip}
+}{% else
+\setlength{\parindent}{0pt}
+\setlength{\parskip}{6pt plus 2pt minus 1pt}
+}
+\usepackage{hyperref}
+\hypersetup{
+            pdfborder={0 0 0},
+            breaklinks=true}
+\urlstyle{same}  % don't use monospace font for urls
+\setlength{\emergencystretch}{3em}  % prevent overfull lines
+\providecommand{\tightlist}{%
+  \setlength{\itemsep}{0pt}\setlength{\parskip}{0pt}}
+\setcounter{secnumdepth}{0}
+% Redefines (sub)paragraphs to behave more like sections
+\ifx\paragraph\undefined\else
+\let\oldparagraph\paragraph
+\renewcommand{\paragraph}[1]{\oldparagraph{#1}\mbox{}}
+\fi
+\ifx\subparagraph\undefined\else
+\let\oldsubparagraph\subparagraph
+\renewcommand{\subparagraph}[1]{\oldsubparagraph{#1}\mbox{}}
+\fi
+
+% set default figure placement to htbp
+\makeatletter
+\def\fps@figure{htbp}
+\makeatother
+
+
+\date{}
+
+\begin{document}
+
+\frac{{1}}{{2}}\cdot\alpha
+
+\end{document}