mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-02 15:32:06 +00:00
78 lines
2.6 KiB
JavaScript
Executable File
78 lines
2.6 KiB
JavaScript
Executable File
#!/usr/local/bin/node
|
|
|
|
/***
|
|
* Pandoc-style markdown preprocessor that drops extra directives
|
|
* included for running doc code, and that optionally, when
|
|
* --highlight is provided, replaces code blocks that are Rust code
|
|
* with highlighted HTML blocks. The directives recognized are:
|
|
*
|
|
* '## ignore' tells the test extractor (extract-tests.js) to ignore
|
|
* the block completely.
|
|
* '## notrust' makes the test extractor ignore the block, makes
|
|
* this script not highlight the block.
|
|
* '# [any text]' is a line that is stripped out by this script, and
|
|
* converted to a normal line of code (without the leading #) by
|
|
* the test extractor.
|
|
*/
|
|
|
|
var fs = require("fs");
|
|
CodeMirror = require("./lib/codemirror-node");
|
|
require("./lib/codemirror-rust");
|
|
|
|
function help() {
|
|
console.log("usage: " + process.argv[0] + " [--highlight] [-o outfile] [infile]");
|
|
process.exit(1);
|
|
}
|
|
|
|
var highlight = false, infile, outfile;
|
|
|
|
for (var i = 2; i < process.argv.length; ++i) {
|
|
var arg = process.argv[i];
|
|
if (arg == "--highlight") highlight = true;
|
|
else if (arg == "-o" && outfile == null && ++i < process.argv.length) outfile = process.argv[i];
|
|
else if (arg[0] != "-") infile = arg;
|
|
else help();
|
|
}
|
|
|
|
var lines = fs.readFileSync(infile || "/dev/stdin").toString().split(/\n\r?/g), cur = 0, line;
|
|
var out = outfile ? fs.createWriteStream(outfile) : process.stdout;
|
|
|
|
while ((line = lines[cur++]) != null) {
|
|
if (/^~~~/.test(line)) {
|
|
var block = "", bline;
|
|
var notRust =
|
|
/notrust/.test(line)
|
|
// These are all used by the language ref to indicate things
|
|
// that are not Rust source code
|
|
|| /ebnf/.test(line)
|
|
|| /abnf/.test(line)
|
|
|| /keyword/.test(line)
|
|
|| /field/.test(line)
|
|
|| /precedence/.test(line);
|
|
var isRust = !notRust;
|
|
while ((bline = lines[cur++]) != null) {
|
|
if (/^~~~/.test(bline)) break;
|
|
if (!/^\s*##? /.test(bline)) block += bline + "\n";
|
|
}
|
|
if (!highlight || !isRust)
|
|
out.write(line + "\n" + block + bline + "\n");
|
|
else {
|
|
var html = '<pre class="cm-s-default">', curstr = "", curstyle = null;
|
|
function add(str, style) {
|
|
if (style != curstyle) {
|
|
if (curstyle) html +=
|
|
'<span class="cm-' + CodeMirror.htmlEscape(curstyle) + '">' +
|
|
CodeMirror.htmlEscape(curstr) + "</span>";
|
|
else if (curstr) html += CodeMirror.htmlEscape(curstr);
|
|
curstr = str; curstyle = style;
|
|
} else curstr += str;
|
|
}
|
|
CodeMirror.runMode(block, "rust", add);
|
|
add("", "bogus"); // Flush pending string.
|
|
out.write(html + "</pre>\n");
|
|
}
|
|
} else {
|
|
out.write(line + "\n");
|
|
}
|
|
}
|