HackMD/public/vendor/codemirror/mode/mbox/mbox.js

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2016-06-01 06:37:28 +00:00
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE
(function(mod) {
if (typeof exports == "object" && typeof module == "object") // CommonJS
mod(require("../../lib/codemirror"));
else if (typeof define == "function" && define.amd) // AMD
define(["../../lib/codemirror"], mod);
else // Plain browser env
mod(CodeMirror);
})(function(CodeMirror) {
"use strict";
var rfc2822 = [
"From", "Sender", "Reply-To", "To", "Cc", "Bcc", "Message-ID",
"In-Reply-To", "References", "Resent-From", "Resent-Sender", "Resent-To",
"Resent-Cc", "Resent-Bcc", "Resent-Message-ID", "Return-Path", "Received"
];
var rfc2822NoEmail = [
"Date", "Subject", "Comments", "Keywords", "Resent-Date"
];
CodeMirror.registerHelper("hintWords", "mbox", rfc2822.concat(rfc2822NoEmail));
var whitespace = /^[ \t]/;
var separator = /^From /; // See RFC 4155
var rfc2822Header = new RegExp("^(" + rfc2822.join("|") + "): ");
var rfc2822HeaderNoEmail = new RegExp("^(" + rfc2822NoEmail.join("|") + "): ");
var header = /^[^:]+:/; // Optional fields defined in RFC 2822
var email = /^[^ ]+@[^ ]+/;
var untilEmail = /^.*?(?=[^ ]+?@[^ ]+)/;
var bracketedEmail = /^<.*?>/;
var untilBracketedEmail = /^.*?(?=<.*>)/;
function styleForHeader(header) {
if (header === "Subject") return "header";
return "string";
}
function readToken(stream, state) {
if (stream.sol()) {
// From last line
state.inSeparator = false;
if (state.inHeader && stream.match(whitespace)) {
// Header folding
return null;
} else {
state.inHeader = false;
state.header = null;
}
if (stream.match(separator)) {
state.inHeaders = true;
state.inSeparator = true;
return "atom";
}
var match;
var emailPermitted = false;
if ((match = stream.match(rfc2822HeaderNoEmail)) ||
(emailPermitted = true) && (match = stream.match(rfc2822Header))) {
state.inHeaders = true;
state.inHeader = true;
state.emailPermitted = emailPermitted;
state.header = match[1];
return "atom";
}
// Use vim's heuristics: recognize custom headers only if the line is in a
// block of legitimate headers.
if (state.inHeaders && (match = stream.match(header))) {
state.inHeader = true;
state.emailPermitted = true;
state.header = match[1];
return "atom";
}
state.inHeaders = false;
stream.skipToEnd();
return null;
}
if (state.inSeparator) {
if (stream.match(email)) return "link";
if (stream.match(untilEmail)) return "atom";
stream.skipToEnd();
return "atom";
}
if (state.inHeader) {
var style = styleForHeader(state.header);
if (state.emailPermitted) {
if (stream.match(bracketedEmail)) return style + " link";
if (stream.match(untilBracketedEmail)) return style;
}
stream.skipToEnd();
return style;
}
stream.skipToEnd();
return null;
};
CodeMirror.defineMode("mbox", function() {
return {
startState: function() {
return {
// Is in a mbox separator
inSeparator: false,
// Is in a mail header
inHeader: false,
// If bracketed email is permitted. Only applicable when inHeader
emailPermitted: false,
// Name of current header
header: null,
// Is in a region of mail headers
inHeaders: false
};
},
token: readToken,
blankLine: function(state) {
state.inHeaders = state.inSeparator = state.inHeader = false;
}
};
});
CodeMirror.defineMIME("application/mbox", "mbox");
});