44 lines
1.4 KiB
JavaScript
Executable file
44 lines
1.4 KiB
JavaScript
Executable file
#!/usr/local/bin/node
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/***
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* Script for extracting compilable fragments from markdown
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* documentation. See prep.js for a description of the format
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* recognized by this tool. Expects a directory fragements/ to exist
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* under the current directory, and writes the fragments in there as
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* individual .rs files.
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*/
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var fs = require("fs");
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if (!process.argv[2]) {
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console.log("Please provide an input file name.");
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process.exit(1);
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}
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var lines = fs.readFileSync(process.argv[2]).toString().split(/\n\r?/g);
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var cur = 0, line, chapter, chapter_n;
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while ((line = lines[cur++]) != null) {
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var chap = line.match(/^# (.*)/);
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if (chap) {
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chapter = chap[1].toLowerCase().replace(/\W/g, "_");
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chapter_n = 1;
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} else if (/^~~~/.test(line)) {
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var block = "", ignore = false;
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while ((line = lines[cur++]) != null) {
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if (/^\s*## (?:notrust|ignore)/.test(line)) ignore = true;
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else if (/^~~~/.test(line)) break;
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else block += line.replace(/^# /, "") + "\n";
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}
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if (!ignore) {
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if (!/\bfn main\b/.test(block)) {
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if (/(^|\n) *(native|use|mod|import|export)\b/.test(block))
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block += "\nfn main() {}\n";
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else block = "fn main() {\n" + block + "\n}\n";
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}
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if (!/\buse std\b/.test(block)) block = "use std;\n" + block;
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var filename = "fragments/" + chapter + "_" + (chapter_n++) + ".rs";
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fs.writeFileSync(filename, block);
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}
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}
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}
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