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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