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Rename Style and Appearance

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* Renames Style -> Decoration
* Renames Appearance -> Style
* Adds Style.Parse and Style.TryParse
This commit is contained in:
Patrik Svensson
2020-08-03 22:33:08 +02:00
committed by Patrik Svensson
parent c3286a4842
commit 98cf63f485
32 changed files with 691 additions and 405 deletions
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104
src/Spectre.Console/Internal/Text/StyleParser.cs Normal file
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using System;
namespace Spectre.Console.Internal
{
internal static class StyleParser
{
public static Style Parse(string text)
{
var style = Parse(text, out var error);
if (error != null)
{
throw new InvalidOperationException(error);
}
return style;
}
public static bool TryParse(string text, out Style style)
{
style = Parse(text, out var error);
if (error != null)
{
return false;
}
return true;
}
private static Style Parse(string text, out string error)
{
var effectiveDecoration = (Decoration?)null;
var effectiveForeground = (Color?)null;
var effectiveBackground = (Color?)null;
var parts = text.Split(new[] { ' ' });
var foreground = true;
foreach (var part in parts)
{
if (part.Equals("default", StringComparison.OrdinalIgnoreCase))
{
continue;
}
if (part.Equals("on", StringComparison.OrdinalIgnoreCase))
{
foreground = false;
continue;
}
var decoration = DecorationTable.GetDecoration(part);
if (decoration != null)
{
if (effectiveDecoration == null)
{
effectiveDecoration = Decoration.None;
}
effectiveDecoration |= decoration.Value;
}
else
{
var color = ColorTable.GetColor(part);
if (color == null)
{
if (!foreground)
{
error = $"Could not find color '{part}'.";
}
else
{
error = $"Could not find color or style '{part}'.";
}
return null;
}
if (foreground)
{
if (effectiveForeground != null)
{
error = "A foreground color has already been set.";
return null;
}
effectiveForeground = color;
}
else
{
if (effectiveBackground != null)
{
error = "A background color has already been set.";
return null;
}
effectiveBackground = color;
}
}
}
error = null;
return new Style(effectiveForeground, effectiveBackground, effectiveDecoration);
}
}
}