[gnome-builder/wip/gtk4-port: 1515/1774] plugins/shellcmd: add helper to create terminal launcher

[Christian Hergert <chergert src gnome org>]

commit e8d81ae2d8b5789e8103f10e108260f6c2740b00
Author: Christian Hergert <chergert redhat com>
Date:   Tue Jun 14 23:53:39 2022 -0700

    plugins/shellcmd: add helper to create terminal launcher
    
    This still needs a bit more work, but it's coming together.

 src/plugins/shellcmd/gbp-shellcmd-run-command.c | 89 +++++++++++++++++++++++++
 src/plugins/shellcmd/gbp-shellcmd-run-command.h |  3 +
 2 files changed, 92 insertions(+)
---
diff --git a/src/plugins/shellcmd/gbp-shellcmd-run-command.c b/src/plugins/shellcmd/gbp-shellcmd-run-command.c
index ca685829e..5d09581c6 100644
--- a/src/plugins/shellcmd/gbp-shellcmd-run-command.c
+++ b/src/plugins/shellcmd/gbp-shellcmd-run-command.c
@@ -300,3 +300,92 @@ gbp_shellcmd_run_command_set_accelerator (GbpShellcmdRunCommand *self,
       g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_ACCELERATOR_LABEL]);
     }
 }
+
+static char *
+expand_cwd (const char *cwd,
+            ...)
+{
+  va_list args;
+  const char *key;
+  char *ret = NULL;
+
+  if (cwd == NULL)
+    return g_strdup (g_get_home_dir ());
+
+  if (cwd[0] == '~')
+    return ide_path_expand (cwd);
+
+  if (cwd[0] != '$')
+    return g_strdup (cwd);
+
+  va_start (args, cwd);
+  while ((key = va_arg (args, const char *)))
+    {
+      const char *value = va_arg (args, const char *);
+
+      if (g_str_has_prefix (cwd, key))
+        {
+          ret = g_build_filename (value, cwd + strlen (key), NULL);
+          break;
+        }
+    }
+  va_end (args);
+
+  return ret;
+}
+
+IdeTerminalLauncher *
+gbp_shellcmd_run_command_create_launcher (GbpShellcmdRunCommand *self,
+                                          IdeContext            *context)
+{
+  g_autoptr(IdeSubprocessLauncher) launcher = NULL;
+  g_autoptr(GFile) workdir = NULL;
+  g_autofree char *cwd_expanded = NULL;
+  const char * const *argv;
+  const char * const *env;
+  const char *cwd;
+  const char *builddir;
+  const char *srcdir;
+  const char *home;
+
+  g_return_val_if_fail (GBP_IS_SHELLCMD_RUN_COMMAND (self), NULL);
+  g_return_val_if_fail (IDE_IS_CONTEXT (context), NULL);
+
+  workdir = ide_context_ref_workdir (context);
+  home = g_get_home_dir ();
+  srcdir = g_file_peek_path (workdir);
+  builddir = g_file_peek_path (workdir);
+
+  if (ide_context_has_project (context))
+    {
+      IdeBuildManager *build_manager = ide_build_manager_from_context (context);
+      IdePipeline *pipeline = ide_build_manager_get_pipeline (build_manager);
+
+      if (pipeline != NULL)
+        {
+          launcher = ide_pipeline_create_launcher (pipeline, NULL);
+          builddir = ide_pipeline_get_builddir (pipeline);
+          srcdir = ide_pipeline_get_srcdir (pipeline);
+        }
+    }
+
+  if (launcher == NULL)
+    launcher = ide_subprocess_launcher_new (0);
+
+  cwd = ide_run_command_get_cwd (IDE_RUN_COMMAND (self));
+  argv = ide_run_command_get_argv (IDE_RUN_COMMAND (self));
+  env = ide_run_command_get_env (IDE_RUN_COMMAND (self));
+  cwd = ide_run_command_get_cwd (IDE_RUN_COMMAND (self));
+
+  cwd_expanded = expand_cwd (cwd,
+                             "$HOME", home,
+                             "$BUILDDIR", builddir,
+                             "$SRCDIR", srcdir,
+                             NULL);
+
+  ide_subprocess_launcher_set_cwd (launcher, cwd_expanded);
+  ide_subprocess_launcher_set_argv (launcher, argv);
+  ide_subprocess_launcher_set_environ (launcher, env);
+
+  return ide_terminal_launcher_new_for_launcher (launcher);
+}
diff --git a/src/plugins/shellcmd/gbp-shellcmd-run-command.h b/src/plugins/shellcmd/gbp-shellcmd-run-command.h
index 30aeb79df..8abca3b3a 100644
--- a/src/plugins/shellcmd/gbp-shellcmd-run-command.h
+++ b/src/plugins/shellcmd/gbp-shellcmd-run-command.h
@@ -21,6 +21,7 @@
 #pragma once
 
 #include <libide-foundry.h>
+#include <libide-terminal.h>
 
 G_BEGIN_DECLS
 
@@ -34,5 +35,7 @@ void                   gbp_shellcmd_run_command_delete          (GbpShellcmdRunC
 const char            *gbp_shellcmd_run_command_get_accelerator (GbpShellcmdRunCommand *self);
 void                   gbp_shellcmd_run_command_set_accelerator (GbpShellcmdRunCommand *self,
                                                                  const char            *accelerator);
+IdeTerminalLauncher   *gbp_shellcmd_run_command_create_launcher (GbpShellcmdRunCommand *self,
+                                                                 IdeContext            *context);
 
 G_END_DECLS