/// <summary>
/// Gathers merge blocks in current document.
/// </summary>
/// <returns>Merge blocks in current document.</returns>
public static List <MergeBlock> GetMergeBlocksFlattened(ServerTextControl textControl)
{
ValidateMergeBlockNesting(textControl);
var result = new List <MergeBlock>();
// Get a list of all block start and end markers ordered by their start position:
var blockMarkers = GetBlockMarkersOrdered(textControl);
// Gather blocks:
var startMarkers = new Stack <TXTextControl.DocumentTarget>();
foreach (var marker in blockMarkers)
{
if (marker.TargetName.StartsWith(MergeBlock.BlockStartPrefix, StringComparison.OrdinalIgnoreCase))
{
// Start marker:
startMarkers.Push(marker);
}
else if (marker.TargetName.StartsWith(MergeBlock.BlockEndPrefix, StringComparison.OrdinalIgnoreCase))
{
// End marker:
TXTextControl.DocumentTarget startMarker = startMarkers.Pop(); // Get currently open start marker
var blockNew = new MergeBlock(startMarker, marker);
result.Add(blockNew);
}
}
result.Sort(MergeBlock.SortPosition);
return(result);
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="startMarker">Block start marker.</param>
/// <param name="endMarker">Block end marker.</param>
public MergeBlock(TXTextControl.DocumentTarget startMarker, TXTextControl.DocumentTarget endMarker)
{
StartMarker = startMarker;
EndMarker = endMarker;
_fields = new List <MergeField>();
_children = new List <MergeBlock>();
}
/// <summary>
/// Validates merge block nesting
/// </summary>
public static void ValidateMergeBlockNesting(ServerTextControl textControl)
{
// Get a list of all block start and end markers ordered by their start position:
var blockMarkers = GetBlockMarkersOrdered(textControl);
var startMarkers = new Stack <TXTextControl.DocumentTarget>();
foreach (var marker in blockMarkers)
{
if (marker.TargetName.StartsWith(MergeBlock.BlockStartPrefix, StringComparison.OrdinalIgnoreCase))
{
// Start marker:
startMarkers.Push(marker);
}
else if (marker.TargetName.StartsWith(MergeBlock.BlockEndPrefix, StringComparison.OrdinalIgnoreCase))
{
// End marker:
var endMarkerName = marker.TargetName.Substring(MergeBlock.BlockEndPrefix.Length); // Get block name
TXTextControl.DocumentTarget startMarker = (startMarkers.Count > 0) ? startMarkers.Pop() : null; // Get currently open start marker
var startMarkerName
= (startMarker != null)
? startMarker.TargetName.Substring(MergeBlock.BlockStartPrefix.Length)
: string.Empty;
if (endMarkerName.ToLower() != startMarkerName.ToLower())
{
if (startMarkerName != string.Empty)
{
throw new Exception(
"Block nesting invalid somewhere after block start marker “"
+ MergeBlock.BlockStartPrefix + startMarkerName + "”.");
}
else
{
throw new Exception(
"Invalid block end marker “"
+ MergeBlock.BlockEndPrefix + endMarkerName + "”.");
}
}
}
}
}