public static List <ChatTextComponent> FromString(string str)
{
List <ChatTextComponent> components = new List <ChatTextComponent>();
StringBuffer buffer = new StringBuffer(str);
while (buffer.Available > 0)
{
// In the case of resets being used, we might have several stacked components
ChatTextComponent component = ParseString(buffer);
components.Add(component);
}
return(components);
}
private static ChatTextComponent ParseString(StringBuffer buffer, ChatTextComponent parent)
{
/*
* The below code recursively builds a ChatComponent with color/style inheritance working properly. For instance, if the color is set to blue and then the style is set to underlined,
* then the underlined portion will be a child of the blue portion, so that it remains blue. The logic is as follows:
* - Read from the beginning, appending text characters to the Text field.
* - If the string starts with a formatting code, that will be applied immediately
* - As soon as a formatting code is encountered, save the component:
* - In most case, this means returning to the immediate parent
* - In the case of a reset formatting code, the loop at that level will complete, recursively bubbling up the effect until the parsing process is started again one what's levtover
* - Create a new component and continue reading, following this same pattern
*/
// We work on just one component in each recursive call
ChatTextComponent component = new ChatTextComponent();
// State for the current component
bool isEscaped = false; // Whether the current character is escaped by a previous character
bool isFormatting = false; // Whether the current character is a formatting code
// Gradually parse character-by-character
while (buffer.Available > 0)
{
char c = buffer.ReadChar();
// Check for formatting/escape characters
if (!isEscaped)
{
// The next character should be escaped
if (c == '\\')
{
isEscaped = true;
continue; // We're done with this special character
}
// Parse the formatting code
if (isFormatting)
{
if (c == 'r')
{
// We're done with this component, bubble up to the top level and let it start again
component.Reset = true;
return(component);
}
else
{
isFormatting = false;
switch (c)
{
// TODO Check if parent already has color set?
// Color codes
case '0':
component.Color = ChatComponentColor.Black;
continue;
case '1':
component.Color = ChatComponentColor.DarkBlue;
continue;
case '2':
component.Color = ChatComponentColor.DarkGreen;
continue;
case '3':
component.Color = ChatComponentColor.DarkCyan;
continue;
case '4':
component.Color = ChatComponentColor.DarkRed;
continue;
case '5':
component.Color = ChatComponentColor.Purple;
continue;
case '6':
component.Color = ChatComponentColor.Gold;
continue;
case '7':
component.Color = ChatComponentColor.Gray;
continue;
case '8':
component.Color = ChatComponentColor.DarkGray;
continue;
case '9':
component.Color = ChatComponentColor.Blue;
continue;
case 'a':
component.Color = ChatComponentColor.BrightGreen;
continue;
case 'b':
component.Color = ChatComponentColor.Cyan;
continue;
case 'c':
component.Color = ChatComponentColor.Red;
continue;
case 'd':
component.Color = ChatComponentColor.Pink;
continue;
case 'e':
component.Color = ChatComponentColor.Yellow;
continue;
case 'f':
component.Color = ChatComponentColor.White;
continue;
// Text styles
case 'k':
component.Style |= ChatComponentStyle.Obfuscated;
continue;
case 'l':
component.Style |= ChatComponentStyle.Bold;
continue;
case 'm':
component.Style |= ChatComponentStyle.Strikethrough;
continue;
case 'n':
component.Style |= ChatComponentStyle.Underlined;
continue;
case 'o':
component.Style |= ChatComponentStyle.Italic;
continue;
}
}
}
if (c == Settings.ChatFormattingPrefix)
{
// Check if this is a new component or not
if (component.Text.Length > 0)
{
buffer.Position--; // In order to capture the prefix in the recursive function, we have to move the cursor back a bit
// Determine whether to return (as a child) or to spawn a new child (as a parent)
if (parent != null)
{
return(component);
}
else
{
ChatTextComponent child = ParseString(buffer, component);
// Custom flag is used to indicate that this component (and subcomponents) should be saved and then processing should restart on remaining text
if (child.Reset)
{
return(component);
}
component.Extra.Add(child);
}
}
else
{
isFormatting = true; // The next character is a formatting code
}
continue;
}
}
// Append text to the text field of the current component
component.Text += c;
isEscaped = false;
}
return(component);
}