1 | <?xml version="1.0"?> |
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2 | <xsl:stylesheet version="1.0" |
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3 | xmlns:xsl="http://www.w3.org/1999/XSL/Transform" |
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4 | xmlns:date="http://exslt.org/dates-and-times" |
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5 | xmlns:func="http://exslt.org/functions" |
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6 | extension-element-prefixes="date func"> |
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7 | |
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8 | <date:month-lengths> |
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9 | <date:month>31</date:month> |
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10 | <date:month>28</date:month> |
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11 | <date:month>31</date:month> |
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12 | <date:month>30</date:month> |
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13 | <date:month>31</date:month> |
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14 | <date:month>30</date:month> |
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15 | <date:month>31</date:month> |
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16 | <date:month>31</date:month> |
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17 | <date:month>30</date:month> |
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18 | <date:month>31</date:month> |
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19 | <date:month>30</date:month> |
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20 | <date:month>31</date:month> |
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21 | </date:month-lengths> |
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22 | |
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23 | <func:function name="date:difference"> |
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24 | <xsl:param name="start" /> |
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25 | <xsl:param name="end" /> |
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26 | |
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27 | <xsl:variable name="start-neg" select="starts-with($start, '-')" /> |
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28 | <xsl:variable name="start-no-neg"> |
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29 | <xsl:choose> |
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30 | <xsl:when test="$start-neg or starts-with($start, '+')"> |
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31 | <xsl:value-of select="substring($start, 2)" /> |
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32 | </xsl:when> |
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33 | <xsl:otherwise> |
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34 | <xsl:value-of select="$start" /> |
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35 | </xsl:otherwise> |
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36 | </xsl:choose> |
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37 | </xsl:variable> |
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38 | <xsl:variable name="start-no-neg-length" select="string-length($start-no-neg)" /> |
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39 | <xsl:variable name="start-timezone"> |
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40 | <xsl:choose> |
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41 | <xsl:when test="substring($start-no-neg, $start-no-neg-length) = 'Z'">Z</xsl:when> |
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42 | <xsl:otherwise> |
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43 | <xsl:variable name="tz" select="substring($start-no-neg, $start-no-neg-length - 5)" /> |
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44 | <xsl:if test="(substring($tz, 1, 1) = '-' or |
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45 | substring($tz, 1, 1) = '+') and |
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46 | substring($tz, 4, 1) = ':'"> |
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47 | <xsl:value-of select="$tz" /> |
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48 | </xsl:if> |
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49 | </xsl:otherwise> |
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50 | </xsl:choose> |
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51 | </xsl:variable> |
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52 | <xsl:variable name="end-neg" select="starts-with($end, '-')" /> |
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53 | <xsl:variable name="end-no-neg"> |
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54 | <xsl:choose> |
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55 | <xsl:when test="$end-neg or starts-with($end, '+')"> |
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56 | <xsl:value-of select="substring($end, 2)" /> |
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57 | </xsl:when> |
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58 | <xsl:otherwise> |
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59 | <xsl:value-of select="$end" /> |
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60 | </xsl:otherwise> |
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61 | </xsl:choose> |
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62 | </xsl:variable> |
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63 | <xsl:variable name="end-no-neg-length" select="string-length($end-no-neg)" /> |
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64 | <xsl:variable name="end-timezone"> |
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65 | <xsl:choose> |
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66 | <xsl:when test="substring($end-no-neg, $end-no-neg-length) = 'Z'">Z</xsl:when> |
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67 | <xsl:otherwise> |
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68 | <xsl:variable name="tz" select="substring($end-no-neg, $end-no-neg-length - 5)" /> |
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69 | <xsl:if test="(substring($tz, 1, 1) = '-' or |
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70 | substring($tz, 1, 1) = '+') and |
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71 | substring($tz, 4, 1) = ':'"> |
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72 | <xsl:value-of select="$tz" /> |
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73 | </xsl:if> |
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74 | </xsl:otherwise> |
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75 | </xsl:choose> |
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76 | </xsl:variable> |
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77 | |
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78 | <xsl:variable name="difference"> |
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79 | <xsl:if test="(not(string($start-timezone)) or |
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80 | $start-timezone = 'Z' or |
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81 | (substring($start-timezone, 2, 2) <= 23 and |
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82 | substring($start-timezone, 5, 2) <= 59)) and |
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83 | (not(string($end-timezone)) or |
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84 | $end-timezone = 'Z' or |
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85 | (substring($end-timezone, 2, 2) <= 23 and |
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86 | substring($end-timezone, 5, 2) <= 59))"> |
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87 | <xsl:variable name="start-dt" select="substring($start-no-neg, 1, $start-no-neg-length - string-length($start-timezone))" /> |
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88 | <xsl:variable name="start-dt-length" select="string-length($start-dt)" /> |
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89 | <xsl:variable name="end-dt" select="substring($end-no-neg, 1, $end-no-neg-length - string-length($end-timezone))" /> |
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90 | <xsl:variable name="end-dt-length" select="string-length($end-dt)" /> |
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91 | |
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92 | <xsl:variable name="start-year" select="substring($start-dt, 1, 4) * (($start-neg * -2) + 1)" /> |
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93 | <xsl:variable name="end-year" select="substring($end-dt, 1, 4) * (($end-neg * -2) + 1)" /> |
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94 | <xsl:variable name="diff-year" select="$end-year - $start-year" /> |
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95 | <xsl:choose> |
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96 | <xsl:when test="not(number($start-year) and number($end-year))" /> |
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97 | <xsl:when test="$start-dt-length = 4 or $end-dt-length = 4"> |
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98 | <xsl:choose> |
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99 | <xsl:when test="$diff-year < 0">-P<xsl:value-of select="$diff-year * -1" />Y</xsl:when> |
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100 | <xsl:otherwise>P<xsl:value-of select="$diff-year" />Y</xsl:otherwise> |
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101 | </xsl:choose> |
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102 | </xsl:when> |
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103 | <xsl:when test="substring($start-dt, 5, 1) = '-' and |
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104 | substring($end-dt, 5, 1) = '-'"> |
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105 | <xsl:variable name="start-month" select="substring($start-dt, 6, 2)" /> |
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106 | <xsl:variable name="end-month" select="substring($end-dt, 6, 2)" /> |
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107 | <xsl:variable name="diff-month" select="$end-month - $start-month" /> |
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108 | <xsl:choose> |
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109 | <xsl:when test="not($start-month <= 12 and $end-month <= 12)" /> |
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110 | <xsl:when test="$start-dt-length = 7 or $end-dt-length = 7"> |
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111 | <xsl:variable name="months" select="$diff-month + ($diff-year * 12)" /> |
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112 | <xsl:variable name="abs-months" select="$months * ((($months >= 0) * 2) - 1)" /> |
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113 | <xsl:variable name="y" select="floor($abs-months div 12)" /> |
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114 | <xsl:variable name="m" select="$abs-months mod 12" /> |
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115 | <xsl:if test="$months < 0">-</xsl:if> |
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116 | <xsl:text>P</xsl:text> |
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117 | <xsl:if test="$y"><xsl:value-of select="$y" />Y</xsl:if> |
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118 | <xsl:if test="$m"><xsl:value-of select="$m" />M</xsl:if> |
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119 | </xsl:when> |
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120 | <xsl:when test="substring($start-dt, 8, 1) = '-' and |
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121 | substring($end-dt, 8, 1) = '-'"> |
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122 | <xsl:variable name="start-day" select="substring($start-dt, 9, 2)" /> |
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123 | <xsl:variable name="end-day" select="substring($end-dt, 9, 2)" /> |
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124 | <xsl:if test="$start-day <= 31 and $end-day <= 31"> |
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125 | <xsl:variable name="month-lengths" select="document('')/*/date:month-lengths/date:month" /> |
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126 | <xsl:variable name="start-y-1" select="$start-year - 1" /> |
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127 | <xsl:variable name="start-leaps" |
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128 | select="floor($start-y-1 div 4) - |
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129 | floor($start-y-1 div 100) + |
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130 | floor($start-y-1 div 400)" /> |
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131 | <xsl:variable name="start-leap" select="(not($start-year mod 4) and $start-year mod 100) or not($start-year mod 400)" /> |
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132 | <xsl:variable name="start-month-days" |
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133 | select="sum($month-lengths[position() < $start-month])" /> |
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134 | <xsl:variable name="start-days"> |
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135 | <xsl:variable name="days" |
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136 | select="($start-year * 365) + $start-leaps + |
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137 | $start-month-days + $start-day" /> |
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138 | <xsl:choose> |
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139 | <xsl:when test="$start-leap"> |
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140 | <xsl:value-of select="$days + 1" /> |
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141 | </xsl:when> |
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142 | <xsl:otherwise> |
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143 | <xsl:value-of select="$days" /> |
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144 | </xsl:otherwise> |
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145 | </xsl:choose> |
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146 | </xsl:variable> |
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147 | <xsl:variable name="end-y-1" select="$end-year - 1" /> |
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148 | <xsl:variable name="end-leaps" |
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149 | select="floor($end-y-1 div 4) - |
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150 | floor($end-y-1 div 100) + |
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151 | floor($end-y-1 div 400)" /> |
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152 | <xsl:variable name="end-leap" select="(not($end-year mod 4) and $end-year mod 100) or not($end-year mod 400)" /> |
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153 | <xsl:variable name="end-month-days" |
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154 | select="sum($month-lengths[position() < $end-month])" /> |
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155 | <xsl:variable name="end-days"> |
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156 | <xsl:variable name="days" |
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157 | select="($end-year * 365) + $end-leaps + |
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158 | $end-month-days + $end-day" /> |
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159 | <xsl:choose> |
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160 | <xsl:when test="$end-leap"> |
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161 | <xsl:value-of select="$days + 1" /> |
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162 | </xsl:when> |
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163 | <xsl:otherwise> |
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164 | <xsl:value-of select="$days" /> |
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165 | </xsl:otherwise> |
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166 | </xsl:choose> |
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167 | </xsl:variable> |
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168 | <xsl:variable name="diff-days" select="$end-days - $start-days" /> |
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169 | <xsl:choose> |
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170 | <xsl:when test="$start-dt-length = 10 or $end-dt-length = 10"> |
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171 | <xsl:choose> |
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172 | <xsl:when test="$diff-days < 0">-P<xsl:value-of select="$diff-days * -1" />D</xsl:when> |
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173 | <xsl:otherwise>P<xsl:value-of select="$diff-days" />D</xsl:otherwise> |
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174 | </xsl:choose> |
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175 | </xsl:when> |
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176 | <xsl:when test="substring($start-dt, 11, 1) = 'T' and |
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177 | substring($end-dt, 11, 1) = 'T' and |
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178 | substring($start-dt, 14, 1) = ':' and |
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179 | substring($start-dt, 17, 1) = ':' and |
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180 | substring($end-dt, 14, 1) = ':' and |
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181 | substring($end-dt, 17, 1) = ':'"> |
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182 | <xsl:variable name="start-hour" select="substring($start-dt, 12, 2)" /> |
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183 | <xsl:variable name="start-min" select="substring($start-dt, 15, 2)" /> |
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184 | <xsl:variable name="start-sec" select="substring($start-dt, 18)" /> |
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185 | <xsl:variable name="end-hour" select="substring($end-dt, 12, 2)" /> |
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186 | <xsl:variable name="end-min" select="substring($end-dt, 15, 2)" /> |
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187 | <xsl:variable name="end-sec" select="substring($end-dt, 18)" /> |
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188 | <xsl:if test="$start-hour <= 23 and $end-hour <= 23 and |
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189 | $start-min <= 59 and $end-min <= 59 and |
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190 | $start-sec <= 60 and $end-sec <= 60"> |
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191 | <xsl:variable name="min-s" select="60" /> |
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192 | <xsl:variable name="hour-s" select="60 * 60" /> |
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193 | <xsl:variable name="day-s" select="60 * 60 * 24" /> |
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194 | |
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195 | <xsl:variable name="start-tz-adj"> |
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196 | <xsl:variable name="tz" |
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197 | select="(substring($start-timezone, 2, 2) * $hour-s) + |
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198 | (substring($start-timezone, 5, 2) * $min-s)" /> |
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199 | <xsl:choose> |
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200 | <xsl:when test="starts-with($start-timezone, '-')"> |
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201 | <xsl:value-of select="$tz" /> |
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202 | </xsl:when> |
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203 | <xsl:when test="starts-with($start-timezone, '+')"> |
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204 | <xsl:value-of select="$tz * -1" /> |
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205 | </xsl:when> |
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206 | <xsl:otherwise>0</xsl:otherwise> |
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207 | </xsl:choose> |
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208 | </xsl:variable> |
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209 | <xsl:variable name="end-tz-adj"> |
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210 | <xsl:variable name="tz" |
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211 | select="(substring($end-timezone, 2, 2) * $hour-s) + |
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212 | (substring($end-timezone, 5, 2) * $min-s)" /> |
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213 | <xsl:choose> |
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214 | <xsl:when test="starts-with($end-timezone, '-')"> |
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215 | <xsl:value-of select="$tz" /> |
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216 | </xsl:when> |
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217 | <xsl:when test="starts-with($end-timezone, '+')"> |
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218 | <xsl:value-of select="$tz * -1" /> |
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219 | </xsl:when> |
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220 | <xsl:otherwise>0</xsl:otherwise> |
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221 | </xsl:choose> |
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222 | </xsl:variable> |
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223 | |
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224 | <xsl:variable name="start-secs" select="$start-sec + ($start-min * $min-s) + ($start-hour * $hour-s) + ($start-days * $day-s) + $start-tz-adj" /> |
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225 | <xsl:variable name="end-secs" select="$end-sec + ($end-min * $min-s) + ($end-hour * $hour-s) + ($end-days * $day-s) + $end-tz-adj" /> |
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226 | <xsl:variable name="diff-secs" select="$end-secs - $start-secs" /> |
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227 | <xsl:variable name="s" select="$diff-secs * ((($diff-secs < 0) * -2) + 1)" /> |
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228 | <xsl:variable name="days" select="floor($s div $day-s)" /> |
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229 | <xsl:variable name="hours" select="floor(($s - ($days * $day-s)) div $hour-s)" /> |
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230 | <xsl:variable name="mins" select="floor(($s - ($days * $day-s) - ($hours * $hour-s)) div $min-s)" /> |
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231 | <xsl:variable name="secs" select="$s - ($days * $day-s) - ($hours * $hour-s) - ($mins * $min-s)" /> |
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232 | <xsl:if test="$diff-secs < 0">-</xsl:if> |
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233 | <xsl:text>P</xsl:text> |
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234 | <xsl:if test="$days"> |
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235 | <xsl:value-of select="$days" /> |
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236 | <xsl:text>D</xsl:text> |
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237 | </xsl:if> |
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238 | <xsl:if test="$hours or $mins or $secs">T</xsl:if> |
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239 | <xsl:if test="$hours"> |
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240 | <xsl:value-of select="$hours" /> |
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241 | <xsl:text>H</xsl:text> |
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242 | </xsl:if> |
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243 | <xsl:if test="$mins"> |
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244 | <xsl:value-of select="$mins" /> |
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245 | <xsl:text>M</xsl:text> |
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246 | </xsl:if> |
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247 | <xsl:if test="$secs"> |
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248 | <xsl:value-of select="$secs" /> |
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249 | <xsl:text>S</xsl:text> |
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250 | </xsl:if> |
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251 | </xsl:if> |
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252 | </xsl:when> |
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253 | </xsl:choose> |
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254 | </xsl:if> |
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255 | </xsl:when> |
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256 | </xsl:choose> |
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257 | </xsl:when> |
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258 | </xsl:choose> |
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259 | </xsl:if> |
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260 | </xsl:variable> |
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261 | <func:result select="$difference" /> |
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262 | </func:function> |
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263 | |
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264 | </xsl:stylesheet> |
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