[1] | 1 | /* |
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| 2 | * A template for JavaScript comic plugin for WebStrips |
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| 3 | * |
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| 4 | * License: |
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| 5 | * |
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| 6 | * This program is free software; you can redistribute it and/or modify |
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| 7 | * it under the terms of the GNU General Public License as published by |
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| 8 | * the Free Software Foundation; either version 2 of the License, or (at |
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| 9 | * your option) any later version. |
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| 10 | * |
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| 11 | * This program is distributed in the hope that it will be useful, but |
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| 12 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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| 14 | * Public License for more details. |
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| 15 | * |
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| 16 | * http://www.opensource.org/licenses/gpl-license.php |
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| 17 | * |
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| 18 | * You should have received a copy of the GNU General Public License along |
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| 19 | * with this program; if not, write to the Free Software Foundation, |
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| 20 | * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 21 | * |
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| 22 | */ |
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| 23 | |
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| 24 | /* |
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| 25 | * place any global variables and support functions here ... |
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| 26 | */ |
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| 27 | |
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| 28 | var NEWEST_RE = new RegExp("<input type=\"hidden\" name=\"Date\" value=\"(\\d{4})(\\d{2})(\\d{2})\""); |
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| 29 | |
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| 30 | var FIRST_RE = new RegExp("first\"><a href=\"/comic/(\\d{4})/(\\d{1,2})/(\\d{1,2})/\""); |
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| 31 | |
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| 32 | var NEXT_RE = new RegExp("next\"><a href=\"/comic/(\\d{4})/(\\d{1,2})/(\\d{1,2})/\""); |
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| 33 | |
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| 34 | var PREV_RE = new RegExp("back\"><a href=\"/comic/(\\d{4})/(\\d{1,2})/(\\d{1,2})/\""); |
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| 35 | |
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| 36 | var PATTERN_RE = new RegExp("<div class=\"body\">[\n\t ]+<img src\\=\"([^\"]*)\" +alt\\=\"([^\"]*)\""); |
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| 37 | |
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| 38 | var ARCHIVE_RE = new RegExp("option value=\"http\\://www\\.penny-arcade\\.com/comic/(\\d{4})/(\\d{2})/(\\d{2})\">[\n\t ]+[0-9\\/]+ ([^\n\t<]+)", "g"); |
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| 39 | |
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| 40 | var DATE_RE = new RegExp("(\\d\\d\\d\\d)-(\\d{1,2})-(\\d{1,2})"); |
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| 41 | |
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| 42 | var newestDate= null; |
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| 43 | |
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| 44 | function parseDate(str) { |
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| 45 | |
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| 46 | var m = str.match(DATE_RE); |
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| 47 | |
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| 48 | if (m) { |
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| 49 | d = new Date(m[1] + "/" + m[2] + "/" + m[3] + " 00:00:00"); |
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| 50 | d.setMilliseconds(0); |
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| 51 | return d; |
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| 52 | |
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| 53 | } else return new Date(); |
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| 54 | |
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| 55 | } |
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| 56 | |
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| 57 | /* |
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| 58 | * Function title(id) should return a title for the comic strip with the given id. |
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| 59 | */ |
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| 60 | function title(id) { |
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| 61 | |
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| 62 | c = parseDate(id); |
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| 63 | |
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| 64 | s = get(format("http://www.penny-arcade.com/comic/%1$tY/%1$tm/%1$td", c)); |
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| 65 | |
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| 66 | p = PATTERN_RE.exec(s); |
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| 67 | |
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| 68 | if (p) { |
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| 69 | return p[2]; |
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| 70 | } |
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| 71 | |
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| 72 | return null; |
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| 73 | |
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| 74 | } |
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| 75 | |
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| 76 | /* |
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| 77 | * Function image(id) should return a URL of an image for the comic strip with the given id. |
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| 78 | */ |
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| 79 | function image(id) { |
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| 80 | |
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| 81 | c = parseDate(id); |
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| 82 | |
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| 83 | s = get(format("http://www.penny-arcade.com/comic/%1$tY/%1$tm/%1$td", c)); |
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| 84 | |
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| 85 | p = PATTERN_RE.exec(s); |
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| 86 | |
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| 87 | if (p) { |
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| 88 | if (p[1].indexOf("http://") == 0) |
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| 89 | return p[1]; |
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| 90 | |
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| 91 | // TODO: I do not know if that still works ... i hope that all urls are absolute now. |
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| 92 | return "http://art.penny-arcade.com" + p[1]; |
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| 93 | |
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| 94 | } |
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| 95 | |
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| 96 | return null; |
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| 97 | |
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| 98 | } |
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| 99 | |
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| 100 | /* |
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| 101 | * Function previous(id) should return the id of a comic strip that is prior to the comic strip |
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| 102 | * with a given id or null if there is no such comic. |
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| 103 | */ |
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| 104 | function previous(id) { |
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| 105 | c = parseDate(id); |
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| 106 | |
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| 107 | s = get(format("http://www.penny-arcade.com/comic/%1$tY/%1$tm/%1$td", c)); |
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| 108 | |
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| 109 | p = PREV_RE.exec(s); |
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| 110 | |
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| 111 | if (p) { |
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| 112 | return format("%1$tY-%1$tm-%1$td", parseDate(p[1] + "-" + p[2] + "-" + p[3])); |
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| 113 | } |
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| 114 | return null; |
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| 115 | |
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| 116 | } |
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| 117 | |
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| 118 | /* |
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| 119 | * Function next(id) should return the id of a comic strip that is next to the comic strip |
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| 120 | * with a given id or null if there is no such comic. |
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| 121 | */ |
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| 122 | function next(id) { |
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| 123 | |
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| 124 | // The problem here is that PennyArcade gives an url also for comics that do not exist |
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| 125 | // yet. And without this check that messes up the system. |
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| 126 | |
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| 127 | if (newestDate == null) |
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| 128 | newest(); |
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| 129 | |
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| 130 | c = parseDate(id); |
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| 131 | if (c - newestDate > -43200000) |
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| 132 | return null; |
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| 133 | |
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| 134 | s = get(format("http://www.penny-arcade.com/comic/%1$tY/%1$tm/%1$td", c)); |
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| 135 | |
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| 136 | n = NEXT_RE.exec(s); |
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| 137 | |
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| 138 | if (n) { |
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| 139 | return format("%1$tY-%1$tm-%1$td", parseDate(n[1] + "-" + n[2] + "-" + n[3])); |
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| 140 | } |
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| 141 | |
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| 142 | return null; |
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| 143 | } |
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| 144 | |
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| 145 | /* |
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| 146 | * Function first() should return the id of the first comic strip or null if that information |
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| 147 | * cannot be obtained for this comic. |
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| 148 | */ |
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| 149 | function first() { |
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| 150 | s = get("http://www.penny-arcade.com/comic"); |
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| 151 | |
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| 152 | m = FIRST_RE.exec(s); |
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| 153 | |
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| 154 | if (m) { |
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| 155 | |
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| 156 | return format("%1$tY-%1$tm-%1$td", parseDate(m[1] + "-" + m[2] + "-" + m[3])); |
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| 157 | } |
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| 158 | |
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| 159 | return null; |
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| 160 | } |
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| 161 | |
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| 162 | /* |
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| 163 | * Function newest() should return the id of the most recent comic strip or null if that information |
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| 164 | * cannot be obtained for this comic. |
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| 165 | */ |
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| 166 | function newest() { |
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| 167 | |
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| 168 | s = get("http://www.penny-arcade.com/comic"); |
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| 169 | |
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| 170 | m = NEWEST_RE.exec(s); |
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| 171 | |
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| 172 | if (m) { |
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| 173 | newestDate = parseDate(m[1] + "-" + m[2] + "-" + m[3]); |
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| 174 | return format("%1$tY-%1$tm-%1$td", newestDate); |
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| 175 | } |
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| 176 | |
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| 177 | return null; |
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| 178 | |
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| 179 | } |
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| 180 | |
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| 181 | /* |
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| 182 | * if the information is present you can also implement the following functionality currently |
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| 183 | * supported by WebStrips (uncoment the functions) |
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| 184 | */ |
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| 185 | |
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| 186 | /* |
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| 187 | * Function link(id) should return an url pointing to the page where the comic strip with a |
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| 188 | * given id was retrieved from. |
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| 189 | */ |
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| 190 | |
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| 191 | function link(id) { |
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| 192 | c = parseDate(id); |
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| 193 | |
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| 194 | return format("http://www.penny-arcade.com/comic/%1$tY/%1$tm/%1$td", c); |
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| 195 | } |
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| 196 | |
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| 197 | |
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| 198 | /* |
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| 199 | * Function archive(id) should process the archive data from the comic strip with the given id on |
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| 200 | * and return the possible new comics using archiveInsert(id, title) and archiveAppend(id, title) |
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| 201 | * functions that will only be allowed to call if the archive function is invoked. |
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| 202 | * |
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| 203 | * archiveInsert(id, title) - inserts the archive entry at the beginning of the newly generated archive |
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| 204 | * segment (The last call to this function will insert an entry to the start of the new segment). |
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| 205 | * |
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| 206 | * archiveAppend(id, title) - inserts the archive entry at the end of the newly generated archive |
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| 207 | * segment (The last call to this function will insert an entry to the end of the new segment and thus |
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| 208 | * to the end of archive). |
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| 209 | */ |
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| 210 | |
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| 211 | function archive(id) { |
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| 212 | |
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| 213 | s = get("http://www.penny-arcade.com/archive"); |
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| 214 | |
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| 215 | ARCHIVE_RE.lastIndex = 0; |
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| 216 | |
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| 217 | while (m = ARCHIVE_RE.exec(s)) { |
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| 218 | |
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| 219 | j = m[1] + m[2] + m[3]; |
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| 220 | |
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| 221 | archiveInsert(j, m[4]); |
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| 222 | |
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| 223 | if (j == id) |
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| 224 | break; |
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| 225 | } |
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| 226 | |
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| 227 | } |
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| 228 | |
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