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Add support for recording console output

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This commit adds support for recording console output
as well as exporting it to either text or HTML. A user can
also provide their own encoder if they wish.
This commit is contained in:
Patrik Svensson
2020-09-21 00:44:47 +02:00
committed by Patrik Svensson
parent b197f278ed
commit cd0d182f12
16 changed files with 481 additions and 24 deletions
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14
src/Spectre.Console/Internal/AnsiConsoleRenderer.cs
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@ -1,6 +1,7 @@
using System;
using System.IO;
using System.Text;
using Spectre.Console.Rendering;
namespace Spectre.Console.Internal
{
@ -48,21 +49,14 @@ namespace Spectre.Console.Internal
_ansiBuilder = new AnsiBuilder(Capabilities, linkHasher);
}
public void Write(string text, Style style)
public void Write(Segment segment)
{
if (string.IsNullOrEmpty(text))
{
return;
}
style ??= Style.Plain;
var parts = text.NormalizeLineEndings().Split(new[] { '\n' });
var parts = segment.Text.NormalizeLineEndings().Split(new[] { '\n' });
foreach (var (_, _, last, part) in parts.Enumerate())
{
if (!string.IsNullOrEmpty(part))
{
_out.Write(_ansiBuilder.GetAnsi(part, style));
_out.Write(_ansiBuilder.GetAnsi(part, segment.Style));
}
if (!last)

9
src/Spectre.Console/Internal/FallbackConsoleRenderer.cs
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@ -1,6 +1,7 @@
using System;
using System.IO;
using System.Text;
using Spectre.Console.Rendering;
namespace Spectre.Console.Internal
{
@ -61,14 +62,14 @@ namespace Spectre.Console.Internal
Capabilities = capabilities;
}
public void Write(string text, Style style)
public void Write(Segment segment)
{
if (_lastStyle?.Equals(style) != true)
if (_lastStyle?.Equals(segment.Style) != true)
{
SetStyle(style);
SetStyle(segment.Style);
}
_out.Write(text.NormalizeLineEndings(native: true));
_out.Write(segment.Text.NormalizeLineEndings(native: true));
}
private void SetStyle(Style style)

114
src/Spectre.Console/Internal/HtmlEncoder.cs Normal file
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@ -0,0 +1,114 @@
using System;
using System.Collections.Generic;
using System.Text;
using Spectre.Console.Rendering;
namespace Spectre.Console.Internal
{
internal sealed class HtmlEncoder : IAnsiConsoleEncoder
{
public string Encode(IEnumerable<Segment> segments)
{
var builder = new StringBuilder();
builder.Append("<pre style=\"font-size:90%;font-family:consolas,'Courier New',monospace\">\n");
foreach (var (_, first, _, segment) in segments.Enumerate())
{
if (segment.Text == "\n" && !first)
{
builder.Append('\n');
continue;
}
var parts = segment.Text.Split(new[] { '\n' }, StringSplitOptions.None);
foreach (var (_, _, last, line) in parts.Enumerate())
{
if (string.IsNullOrEmpty(line))
{
continue;
}
builder.Append("<span");
if (!segment.Style.Equals(Style.Plain))
{
builder.Append(" style=\"");
builder.Append(BuildCss(segment.Style));
builder.Append('"');
}
builder.Append('>');
builder.Append(line);
builder.Append("</span>");
if (parts.Length > 1 && !last)
{
builder.Append('\n');
}
}
}
builder.Append("</pre>");
return builder.ToString().TrimEnd('\n');
}
private static string BuildCss(Style style)
{
var css = new List<string>();
var foreground = style.Foreground;
var background = style.Background;
if ((style.Decoration & Decoration.Invert) != 0)
{
var temp = foreground;
foreground = background;
background = temp;
}
if ((style.Decoration & Decoration.Dim) != 0)
{
var blender = background;
if (blender.Equals(Color.Default))
{
blender = Color.White;
}
foreground = foreground.Blend(blender, 0.5f);
}
if (!foreground.Equals(Color.Default))
{
css.Add($"color: #{foreground.ToHex()}");
}
if (!background.Equals(Color.Default))
{
css.Add($"background-color: #{background.ToHex()}");
}
if ((style.Decoration & Decoration.Bold) != 0)
{
css.Add("font-weight: bold");
}
if ((style.Decoration & Decoration.Bold) != 0)
{
css.Add("font-style: italic");
}
if ((style.Decoration & Decoration.Underline) != 0)
{
css.Add("text-decoration: underline");
}
if ((style.Decoration & Decoration.Strikethrough) != 0)
{
css.Add("text-decoration: line-through");
}
return string.Join(";", css);
}
}
}

21
src/Spectre.Console/Internal/TextEncoder.cs Normal file
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@ -0,0 +1,21 @@
using System.Collections.Generic;
using System.Text;
using Spectre.Console.Rendering;
namespace Spectre.Console.Internal
{
internal sealed class TextEncoder : IAnsiConsoleEncoder
{
public string Encode(IEnumerable<Segment> segments)
{
var builder = new StringBuilder();
foreach (var segment in Segment.Merge(segments))
{
builder.Append(segment.Text);
}
return builder.ToString().TrimEnd('\n');
}
}
}