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1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
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2 // Distributed under an MIT license: https://codemirror.net/5/LICENSE
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3
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4 (function(mod) {
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5 if (typeof exports == "object" && typeof module == "object") // CommonJS
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6 mod(require("../../lib/codemirror"));
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7 else if (typeof define == "function" && define.amd) // AMD
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8 define(["../../lib/codemirror"], mod);
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9 else // Plain browser env
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10 mod(CodeMirror);
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11 })(function(CodeMirror) {
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12 "use strict";
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13
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14 var rfc2822 = [
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15 "From", "Sender", "Reply-To", "To", "Cc", "Bcc", "Message-ID",
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16 "In-Reply-To", "References", "Resent-From", "Resent-Sender", "Resent-To",
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17 "Resent-Cc", "Resent-Bcc", "Resent-Message-ID", "Return-Path", "Received"
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18 ];
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19 var rfc2822NoEmail = [
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20 "Date", "Subject", "Comments", "Keywords", "Resent-Date"
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21 ];
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22
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23 CodeMirror.registerHelper("hintWords", "mbox", rfc2822.concat(rfc2822NoEmail));
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24
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25 var whitespace = /^[ \t]/;
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26 var separator = /^From /; // See RFC 4155
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27 var rfc2822Header = new RegExp("^(" + rfc2822.join("|") + "): ");
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28 var rfc2822HeaderNoEmail = new RegExp("^(" + rfc2822NoEmail.join("|") + "): ");
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29 var header = /^[^:]+:/; // Optional fields defined in RFC 2822
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30 var email = /^[^ ]+@[^ ]+/;
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31 var untilEmail = /^.*?(?=[^ ]+?@[^ ]+)/;
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32 var bracketedEmail = /^<.*?>/;
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33 var untilBracketedEmail = /^.*?(?=<.*>)/;
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34
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35 function styleForHeader(header) {
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36 if (header === "Subject") return "header";
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37 return "string";
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38 }
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39
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40 function readToken(stream, state) {
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41 if (stream.sol()) {
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42 // From last line
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43 state.inSeparator = false;
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44 if (state.inHeader && stream.match(whitespace)) {
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45 // Header folding
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46 return null;
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47 } else {
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48 state.inHeader = false;
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49 state.header = null;
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50 }
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51
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52 if (stream.match(separator)) {
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53 state.inHeaders = true;
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54 state.inSeparator = true;
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55 return "atom";
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56 }
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57
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58 var match;
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59 var emailPermitted = false;
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60 if ((match = stream.match(rfc2822HeaderNoEmail)) ||
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61 (emailPermitted = true) && (match = stream.match(rfc2822Header))) {
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62 state.inHeaders = true;
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63 state.inHeader = true;
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64 state.emailPermitted = emailPermitted;
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65 state.header = match[1];
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66 return "atom";
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67 }
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68
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69 // Use vim's heuristics: recognize custom headers only if the line is in a
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70 // block of legitimate headers.
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71 if (state.inHeaders && (match = stream.match(header))) {
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72 state.inHeader = true;
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73 state.emailPermitted = true;
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74 state.header = match[1];
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75 return "atom";
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76 }
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77
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78 state.inHeaders = false;
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79 stream.skipToEnd();
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80 return null;
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81 }
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82
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83 if (state.inSeparator) {
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84 if (stream.match(email)) return "link";
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85 if (stream.match(untilEmail)) return "atom";
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86 stream.skipToEnd();
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87 return "atom";
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88 }
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89
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90 if (state.inHeader) {
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91 var style = styleForHeader(state.header);
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92
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93 if (state.emailPermitted) {
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94 if (stream.match(bracketedEmail)) return style + " link";
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95 if (stream.match(untilBracketedEmail)) return style;
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96 }
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97 stream.skipToEnd();
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98 return style;
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99 }
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100
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101 stream.skipToEnd();
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102 return null;
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103 };
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104
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105 CodeMirror.defineMode("mbox", function() {
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106 return {
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107 startState: function() {
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108 return {
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109 // Is in a mbox separator
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110 inSeparator: false,
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111 // Is in a mail header
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112 inHeader: false,
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113 // If bracketed email is permitted. Only applicable when inHeader
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114 emailPermitted: false,
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115 // Name of current header
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116 header: null,
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117 // Is in a region of mail headers
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118 inHeaders: false
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119 };
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120 },
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121 token: readToken,
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122 blankLine: function(state) {
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123 state.inHeaders = state.inSeparator = state.inHeader = false;
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124 }
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125 };
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126 });
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127
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128 CodeMirror.defineMIME("application/mbox", "mbox");
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129 });
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