[gnome-builder/wip/gtk4-port] libide/foundry: add ide_run_context_merge_unix_fd_map()

[Christian Hergert <chergert src gnome org>]

commit 1ecf419c85d22f1fdae192b1bfae4c42830ec0ad
Author: Christian Hergert <chergert redhat com>
Date:   Fri Jun 17 13:15:38 2022 -0700

    libide/foundry: add ide_run_context_merge_unix_fd_map()
    
    This provides external siplified API for handlers to simply merge their
    FDs to a lower layer.

 src/libide/foundry/ide-run-context.c | 32 ++++++++++++++++++++++++++++++++
 src/libide/foundry/ide-run-context.h |  6 +++++-
 2 files changed, 37 insertions(+), 1 deletion(-)
---
diff --git a/src/libide/foundry/ide-run-context.c b/src/libide/foundry/ide-run-context.c
index 0bd1599f8..e0a6dac65 100644
--- a/src/libide/foundry/ide-run-context.c
+++ b/src/libide/foundry/ide-run-context.c
@@ -643,3 +643,35 @@ ide_run_context_end (IdeRunContext  *self,
 
   return g_steal_pointer (&launcher);
 }
+
+/**
+ * ide_run_context_merge_unix_fd_map:
+ * @self: a #IdeRunContext
+ * @unix_fd_map: a #IdeUnixFDMap
+ * @error: a #GError, or %NULL
+ *
+ * Merges the #IdeUnixFDMap into the current layer.
+ *
+ * If there are collisions in destination FDs, then that may cause an
+ * error and %FALSE is returned.
+ *
+ * @unix_fd_map will have the FDs stolen using ide_unix_fd_map_steal_from()
+ * which means that if successful, @unix_fd_map will not have any open
+ * file-descriptors after calling this function.
+ *
+ * Returns: %TRUE if successful; otherwise %FALSE and @error is set.
+ */
+gboolean
+ide_run_context_merge_unix_fd_map (IdeRunContext  *self,
+                                   IdeUnixFDMap   *unix_fd_map,
+                                   GError        **error)
+{
+  IdeRunContextLayer *layer;
+
+  g_return_val_if_fail (IDE_IS_RUN_CONTEXT (self), FALSE);
+  g_return_val_if_fail (IDE_IS_UNIX_FD_MAP (unix_fd_map), FALSE);
+
+  layer = ide_run_context_current_layer (self);
+
+  return ide_unix_fd_map_steal_from (layer->unix_fd_map, unix_fd_map, error);
+}
diff --git a/src/libide/foundry/ide-run-context.h b/src/libide/foundry/ide-run-context.h
index dca8bd10e..d7dbe8640 100644
--- a/src/libide/foundry/ide-run-context.h
+++ b/src/libide/foundry/ide-run-context.h
@@ -38,7 +38,7 @@ G_DECLARE_FINAL_TYPE (IdeRunContext, ide_run_context, IDE, RUN_CONTEXT, GObject)
  *
  * Returns: %TRUE if successful; otherwise %FALSE and @error must be set.
  */
-typedef gboolean (*IdeRunContextHandler) (IdeRunContext       *self,
+typedef gboolean (*IdeRunContextHandler) (IdeRunContext       *run_context,
                                           const char * const  *argv,
                                           const char * const  *env,
                                           const char          *cwd,
@@ -78,6 +78,10 @@ void                   ide_run_context_take_fd            (IdeRunContext
                                                            int                    source_fd,
                                                            int                    dest_fd);
 IDE_AVAILABLE_IN_ALL
+gboolean               ide_run_context_merge_unix_fd_map  (IdeRunContext         *self,
+                                                           IdeUnixFDMap          *unix_fd_map,
+                                                           GError               **error);
+IDE_AVAILABLE_IN_ALL
 void                   ide_run_context_prepend_argv       (IdeRunContext         *self,
                                                            const char            *arg);
 IDE_AVAILABLE_IN_ALL