[gnome-builder/wip/gtk4-port] libide/sourceview: add more constants to snippet context

[Christian Hergert <chergert src gnome org>]

commit 3934a6ae89e1da4e8200569e391f95d2866da328
Author: Christian Hergert <chergert redhat com>
Date:   Fri Jun 10 19:36:43 2022 -0700

    libide/sourceview: add more constants to snippet context

 src/libide/sourceview/ide-source-view.c | 45 +++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
---
diff --git a/src/libide/sourceview/ide-source-view.c b/src/libide/sourceview/ide-source-view.c
index 330cc6816..fb67cd68c 100644
--- a/src/libide/sourceview/ide-source-view.c
+++ b/src/libide/sourceview/ide-source-view.c
@@ -604,6 +604,48 @@ ide_source_view_zoom_one_action (GtkWidget  *widget,
   ide_source_view_set_font_scale (self, 1);
 }
 
+static void
+ide_source_view_push_snippet (GtkSourceView    *source_view,
+                              GtkSourceSnippet *snippet,
+                              GtkTextIter      *location)
+{
+  IdeSourceView *self = (IdeSourceView *)source_view;
+  GtkSourceSnippetContext *context;
+  GFile *file = NULL;
+
+  g_assert (IDE_IS_SOURCE_VIEW (self));
+  g_assert (GTK_SOURCE_IS_SNIPPET (snippet));
+  g_assert (location != NULL);
+
+  context = gtk_source_snippet_get_context (snippet);
+
+  if (self->buffer != NULL)
+    {
+      if ((file = ide_buffer_get_file (self->buffer)))
+        {
+          g_autoptr(GFile) parent = g_file_get_parent (file);
+          g_autofree gchar *basename = g_file_get_basename (file);
+          IdeContext *ide_context;
+
+          gtk_source_snippet_context_set_constant (context, "filename", basename);
+          gtk_source_snippet_context_set_constant (context, "dirname", g_file_peek_path (parent));
+          gtk_source_snippet_context_set_constant (context, "path", g_file_peek_path (file));
+
+          if ((ide_context = ide_buffer_ref_context (self->buffer)))
+            {
+              g_autoptr(GFile) workdir = ide_context_ref_workdir (ide_context);
+              g_autofree gchar *relative_path = g_file_get_relative_path (workdir, file);
+              g_autofree gchar *relative_dirname = g_file_get_relative_path (workdir, parent);
+
+              gtk_source_snippet_context_set_constant (context, "relative_path", relative_path);
+              gtk_source_snippet_context_set_constant (context, "relative_dirname", relative_dirname);
+            }
+        }
+    }
+
+  GTK_SOURCE_VIEW_CLASS (ide_source_view_parent_class)->push_snippet (source_view, snippet, location);
+}
+
 static void
 ide_source_view_dispose (GObject *object)
 {
@@ -704,6 +746,7 @@ ide_source_view_class_init (IdeSourceViewClass *klass)
 {
   GObjectClass *object_class = G_OBJECT_CLASS (klass);
   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+  GtkSourceViewClass *source_view_class = GTK_SOURCE_VIEW_CLASS (klass);
 
   object_class->dispose = ide_source_view_dispose;
   object_class->get_property = ide_source_view_get_property;
@@ -712,6 +755,8 @@ ide_source_view_class_init (IdeSourceViewClass *klass)
   widget_class->root = ide_source_view_root;
   widget_class->size_allocate = ide_source_view_size_allocate;
 
+  source_view_class->push_snippet = ide_source_view_push_snippet;
+
   g_object_class_override_property (object_class,
                                     PROP_HIGHLIGHT_CURRENT_LINE,
                                     "highlight-current-line");