39 lines
12 KiB
Text
39 lines
12 KiB
Text
(phixonline)-->
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<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span>
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<span style="color: #008080;">include</span> <span style="color: #000000;">timedate</span><span style="color: #0000FF;">.</span><span style="color: #000000;">e</span>
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<span style="color: #008080;">function</span> <span style="color: #000000;">doomsday_rule</span><span style="color: #0000FF;">(</span><span style="color: #004080;">integer</span> <span style="color: #000000;">y</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">m</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">d</span><span style="color: #0000FF;">)</span>
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<span style="color: #004080;">integer</span> <span style="color: #000000;">yr4</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">remainder</span><span style="color: #0000FF;">(</span><span style="color: #000000;">y</span><span style="color: #0000FF;">,</span><span style="color: #000000;">4</span><span style="color: #0000FF;">),</span>
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<span style="color: #000000;">yr100</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">remainder</span><span style="color: #0000FF;">(</span><span style="color: #000000;">y</span><span style="color: #0000FF;">,</span><span style="color: #000000;">100</span><span style="color: #0000FF;">),</span>
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<span style="color: #000000;">yr400</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">remainder</span><span style="color: #0000FF;">(</span><span style="color: #000000;">y</span><span style="color: #0000FF;">,</span><span style="color: #000000;">400</span><span style="color: #0000FF;">),</span>
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<span style="color: #000000;">anchor_day</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">remainder</span><span style="color: #0000FF;">(</span><span style="color: #000000;">2</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">5</span><span style="color: #0000FF;">*</span><span style="color: #000000;">yr4</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">4</span><span style="color: #0000FF;">*</span><span style="color: #000000;">yr100</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">6</span><span style="color: #0000FF;">*</span><span style="color: #000000;">yr400</span><span style="color: #0000FF;">,</span><span style="color: #000000;">7</span><span style="color: #0000FF;">)</span>
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<span style="color: #004080;">bool</span> <span style="color: #000000;">leap_year</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">yr4</span><span style="color: #0000FF;">=</span><span style="color: #000000;">0</span> <span style="color: #008080;">and</span> <span style="color: #0000FF;">(</span><span style="color: #000000;">yr100</span><span style="color: #0000FF;">!=</span><span style="color: #000000;">0</span> <span style="color: #008080;">or</span> <span style="color: #000000;">yr400</span><span style="color: #0000FF;">=</span><span style="color: #000000;">0</span><span style="color: #0000FF;">)</span>
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<span style="color: #004080;">sequence</span> <span style="color: #000000;">anchors</span> <span style="color: #0000FF;">=</span> <span style="color: #008080;">iff</span><span style="color: #0000FF;">(</span><span style="color: #000000;">leap_year</span><span style="color: #0000FF;">?{</span><span style="color: #000000;">4</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">4</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">4</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">3</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">5</span><span style="color: #0000FF;">}</span>
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<span style="color: #0000FF;">:{</span><span style="color: #000000;">3</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">4</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">4</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">3</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">5</span><span style="color: #0000FF;">})</span>
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<span style="color: #004080;">integer</span> <span style="color: #000000;">w</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">d</span> <span style="color: #0000FF;">-</span> <span style="color: #000000;">anchors</span><span style="color: #0000FF;">[</span><span style="color: #000000;">m</span><span style="color: #0000FF;">]</span>
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<span style="color: #008080;">if</span> <span style="color: #000000;">w</span><span style="color: #0000FF;"><</span><span style="color: #000000;">0</span> <span style="color: #008080;">then</span> <span style="color: #000000;">w</span> <span style="color: #0000FF;">+=</span> <span style="color: #000000;">7</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
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<span style="color: #004080;">integer</span> <span style="color: #000000;">dow</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">remainder</span><span style="color: #0000FF;">(</span><span style="color: #000000;">anchor_day</span><span style="color: #0000FF;">+</span><span style="color: #000000;">w</span><span style="color: #0000FF;">,</span><span style="color: #000000;">7</span><span style="color: #0000FF;">)</span>
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<span style="color: #000080;font-style:italic;">-- return dow</span>
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<span style="color: #008080;">return</span> <span style="color: #008080;">iff</span><span style="color: #0000FF;">(</span><span style="color: #000000;">dow</span><span style="color: #0000FF;">=</span><span style="color: #000000;">0</span><span style="color: #0000FF;">?</span><span style="color: #000000;">7</span><span style="color: #0000FF;">:</span><span style="color: #000000;">dow</span><span style="color: #0000FF;">)</span> <span style="color: #000080;font-style:italic;">-- to agree with ISO 8601, and Phix.</span>
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<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
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<span style="color: #008080;">constant</span> <span style="color: #000000;">dates</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{</span><span style="color: #008000;">"1800-01-06"</span><span style="color: #0000FF;">,</span>
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<span style="color: #008000;">"1875-03-29"</span><span style="color: #0000FF;">,</span>
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<span style="color: #008000;">"1915-12-07"</span><span style="color: #0000FF;">,</span>
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<span style="color: #008000;">"1970-12-23"</span><span style="color: #0000FF;">,</span>
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<span style="color: #008000;">"2043-05-14"</span><span style="color: #0000FF;">,</span>
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<span style="color: #008000;">"2077-02-12"</span><span style="color: #0000FF;">,</span>
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<span style="color: #008000;">"2101-04-02"</span><span style="color: #0000FF;">}</span>
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<span style="color: #008080;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span> <span style="color: #008080;">to</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">dates</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">do</span>
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<span style="color: #000000;">timedate</span> <span style="color: #000000;">dt</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">parse_date_string</span><span style="color: #0000FF;">(</span><span style="color: #000000;">dates</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">],{</span><span style="color: #008000;">"YYYY-MM-DD"</span><span style="color: #0000FF;">})</span>
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<span style="color: #004080;">integer</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">y</span><span style="color: #0000FF;">,</span><span style="color: #000000;">m</span><span style="color: #0000FF;">,</span><span style="color: #000000;">d</span><span style="color: #0000FF;">}</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">dt</span><span style="color: #0000FF;">,</span>
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<span style="color: #000000;">bid</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">day_of_week</span><span style="color: #0000FF;">(</span><span style="color: #000000;">y</span><span style="color: #0000FF;">,</span><span style="color: #000000;">m</span><span style="color: #0000FF;">,</span><span style="color: #000000;">d</span><span style="color: #0000FF;">),</span>
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<span style="color: #000000;">drd</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">doomsday_rule</span><span style="color: #0000FF;">(</span><span style="color: #000000;">y</span><span style="color: #0000FF;">,</span><span style="color: #000000;">m</span><span style="color: #0000FF;">,</span><span style="color: #000000;">d</span><span style="color: #0000FF;">)</span>
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<span style="color: #004080;">string</span> <span style="color: #000000;">ds</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">format_timedate</span><span style="color: #0000FF;">(</span><span style="color: #000000;">dt</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"Dddd Mmmm D, YYYY"</span><span style="color: #0000FF;">),</span>
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<span style="color: #000000;">bis</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">day_of_week</span><span style="color: #0000FF;">(</span><span style="color: #000000;">y</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">m</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">d</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">bAsText</span><span style="color: #0000FF;">:=</span><span style="color: #004600;">true</span><span style="color: #0000FF;">),</span>
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<span style="color: #000000;">ok</span> <span style="color: #0000FF;">=</span> <span style="color: #008080;">iff</span><span style="color: #0000FF;">(</span><span style="color: #000000;">bid</span><span style="color: #0000FF;">==</span><span style="color: #000000;">drd</span><span style="color: #0000FF;">?</span><span style="color: #008000;">"(ok)"</span><span style="color: #0000FF;">:</span><span style="color: #008000;">"*** ERROR ***"</span><span style="color: #0000FF;">)</span>
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<span style="color: #7060A8;">printf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"%s\n%-30s (%d = %d ? %s)\n"</span><span style="color: #0000FF;">,{</span><span style="color: #000000;">ds</span><span style="color: #0000FF;">,</span><span style="color: #000000;">bis</span><span style="color: #0000FF;">,</span><span style="color: #000000;">bid</span><span style="color: #0000FF;">,</span><span style="color: #000000;">drd</span><span style="color: #0000FF;">,</span><span style="color: #000000;">ok</span><span style="color: #0000FF;">})</span>
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<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
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