[gnome-builder] libide/foundry: add _ide_run_context_push_user_shell() private API

[Christian Hergert <chergert src gnome org>]

commit 5db617f033ea577e4e60da103e745d2f982d6ea9
Author: Christian Hergert <chergert redhat com>
Date:   Tue Sep 27 15:02:09 2022 -0700

    libide/foundry: add _ide_run_context_push_user_shell() private API
    
    This could be public API, but is private currently to simplify backporting
    to gnome-builder-43. It is similar to ide_run_context_push_shell() but
    requests the user's preferred shell instead.
    
    This should only be used when you know you'd have access to the user's
    preferred shell (ie: via the host runtime).

 src/libide/foundry/ide-run-context-private.h | 32 ++++++++++++++++
 src/libide/foundry/ide-run-context.c         | 56 +++++++++++++++++++++++++---
 2 files changed, 83 insertions(+), 5 deletions(-)
---
diff --git a/src/libide/foundry/ide-run-context-private.h b/src/libide/foundry/ide-run-context-private.h
new file mode 100644
index 000000000..d68e97c6d
--- /dev/null
+++ b/src/libide/foundry/ide-run-context-private.h
@@ -0,0 +1,32 @@
+/* ide-run-context-private.h
+ *
+ * Copyright 2022 Christian Hergert <chergert redhat com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#pragma once
+
+#include <glib.h>
+
+G_BEGIN_DECLS
+
+typedef struct _IdeRunContext IdeRunContext;
+
+void _ide_run_context_push_user_shell (IdeRunContext *self,
+                                       gboolean       login);
+
+G_END_DECLS
diff --git a/src/libide/foundry/ide-run-context.c b/src/libide/foundry/ide-run-context.c
index ba4db940b..d79ccd396 100644
--- a/src/libide/foundry/ide-run-context.c
+++ b/src/libide/foundry/ide-run-context.c
@@ -31,6 +31,7 @@
 #include "ide-private.h"
 
 #include "ide-run-context.h"
+#include "ide-run-context-private.h"
 
 typedef struct
 {
@@ -347,6 +348,20 @@ ide_run_context_push_host (IdeRunContext *self)
     }
 }
 
+typedef struct
+{
+  char *shell;
+  guint login : 1;
+} Shell;
+
+static void
+shell_free (gpointer data)
+{
+  Shell *shell = data;
+  g_clear_pointer (&shell->shell, g_free);
+  g_slice_free (Shell, shell);
+}
+
 static gboolean
 ide_run_context_shell_handler (IdeRunContext       *self,
                                const char * const  *argv,
@@ -356,13 +371,15 @@ ide_run_context_shell_handler (IdeRunContext       *self,
                                gpointer             user_data,
                                GError             **error)
 {
+  Shell *shell = user_data;
   g_autoptr(GString) str = NULL;
-  gboolean login = !!GPOINTER_TO_INT (user_data);
 
   g_assert (IDE_IS_RUN_CONTEXT (self));
   g_assert (argv != NULL);
   g_assert (env != NULL);
   g_assert (IDE_IS_UNIX_FD_MAP (unix_fd_map));
+  g_assert (shell != NULL);
+  g_assert (shell->shell != NULL);
 
   if (!ide_run_context_merge_unix_fd_map (self, unix_fd_map, error))
     return FALSE;
@@ -370,8 +387,8 @@ ide_run_context_shell_handler (IdeRunContext       *self,
   if (cwd != NULL)
     ide_run_context_set_cwd (self, cwd);
 
-  ide_run_context_append_argv (self, "/bin/sh");
-  if (login)
+  ide_run_context_append_argv (self, shell->shell);
+  if (shell->login)
     ide_run_context_append_argv (self, "-l");
   ide_run_context_append_argv (self, "-c");
 
@@ -417,12 +434,41 @@ void
 ide_run_context_push_shell (IdeRunContext *self,
                             gboolean       login)
 {
+  Shell *shell;
+
   g_return_if_fail (IDE_IS_RUN_CONTEXT (self));
 
+  shell = g_slice_new0 (Shell);
+  shell->shell = g_strdup ("/bin/sh");
+  shell->login = !!login;
+
+  ide_run_context_push (self,
+                        ide_run_context_shell_handler,
+                        shell, shell_free);
+}
+
+void
+_ide_run_context_push_user_shell (IdeRunContext *self,
+                                  gboolean       login)
+{
+  const char *user_shell;
+  Shell *shell;
+
+  g_return_if_fail (IDE_IS_RUN_CONTEXT (self));
+
+  user_shell = ide_get_user_shell ();
+
+  if (!ide_shell_supports_dash_c (user_shell) ||
+      (login && !ide_shell_supports_dash_login (user_shell)))
+    user_shell = "/bin/sh";
+
+  shell = g_slice_new0 (Shell);
+  shell->shell = g_strdup (user_shell);
+  shell->login = !!login;
+
   ide_run_context_push (self,
                         ide_run_context_shell_handler,
-                        GINT_TO_POINTER (!!login),
-                        NULL);
+                        shell, shell_free);
 }
 
 static gboolean