64 lines
1.5 KiB
D
64 lines
1.5 KiB
D
import std.stdio;
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import dyaml.all;
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struct Color
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{
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ubyte red;
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ubyte green;
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ubyte blue;
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const int opCmp(ref const Color c)
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{
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if(red != c.red) {return red - c.red;}
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if(green != c.green){return green - c.green;}
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if(blue != c.blue) {return blue - c.blue;}
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return 0;
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}
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}
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Node representColor(ref Node node, Representer representer)
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{
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//The node is guaranteed to be Color as we add representer for Color.
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Color color = node.as!Color;
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static immutable hex = "0123456789ABCDEF";
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//Using the color format from the Constructor example.
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string scalar;
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foreach(channel; [color.red, color.green, color.blue])
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{
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scalar ~= hex[channel / 16];
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scalar ~= hex[channel % 16];
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}
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//Representing as a scalar, with custom tag to specify this data type.
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return representer.representScalar("!color", scalar);
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}
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void main()
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{
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try
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{
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auto representer = new Representer;
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representer.addRepresenter!Color(&representColor);
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auto resolver = new Resolver;
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resolver.addImplicitResolver("!color", std.regex.regex("[0-9a-fA-F]{6}"),
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"0123456789abcdefABCDEF");
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auto dumper = Dumper("output.yaml");
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dumper.representer = representer;
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dumper.resolver = resolver;
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auto document = Node([Color(255, 0, 0),
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Color(0, 255, 0),
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Color(0, 0, 255)]);
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dumper.dump(document);
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}
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catch(YAMLException e)
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{
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writeln(e.msg);
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}
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}
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