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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
*
* Copyright (C) 2013 Stef Walter <stefw@redhat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Author: Stef Walter <stefw@redhat.com>
*/
#include "config.h"
#include "ot-editor.h"
#include "libgsystem.h"
#include <sys/wait.h>
#include <string.h>
#ifndef DEFAULT_EDITOR
#define DEFAULT_EDITOR "vi"
#endif
/* Logic pulled from git */
static const char *
get_editor (void)
{
const char *editor = g_getenv ("OSTREE_EDITOR");
const char *terminal = g_getenv ("TERM");
int terminal_is_dumb = !terminal || g_str_equal (terminal, "dumb");
if (!editor && !terminal_is_dumb)
editor = g_getenv ("VISUAL");
if (!editor)
editor = g_getenv ("EDITOR");
if (!editor && terminal_is_dumb)
return NULL;
if (!editor)
editor = DEFAULT_EDITOR;
return editor;
}
char *
ot_editor_prompt (OstreeRepo *repo,
const char *input,
GCancellable *cancellable,
GError **error)
{
gs_unref_object GSSubprocessContext *ctx = NULL;
gs_unref_object GSSubprocess *proc = NULL;
gs_unref_object GFile *file = NULL;
gs_unref_object GFileIOStream *io = NULL;
GOutputStream *output;
const char *editor;
char *ret = NULL;
gs_free gchar *args = NULL;
editor = get_editor ();
if (editor == NULL)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Terminal is dumb, but EDITOR unset");
goto out;
}
file = g_file_new_tmp (NULL, &io, error);
if (file == NULL)
goto out;
output = g_io_stream_get_output_stream (G_IO_STREAM (io));
if (!g_output_stream_write_all (output, input, strlen (input), NULL, cancellable, error) ||
!g_io_stream_close (G_IO_STREAM (io), cancellable, error))
goto out;
{
gs_free gchar *quoted_file = g_shell_quote (gs_file_get_path_cached (file));
args = g_strconcat (editor, " ", quoted_file, NULL);
}
ctx = gs_subprocess_context_newv ("/bin/sh", "-c", args, NULL);
gs_subprocess_context_set_stdin_disposition (ctx, GS_SUBPROCESS_STREAM_DISPOSITION_INHERIT);
gs_subprocess_context_set_stdout_disposition (ctx, GS_SUBPROCESS_STREAM_DISPOSITION_INHERIT);
gs_subprocess_context_set_stderr_disposition (ctx, GS_SUBPROCESS_STREAM_DISPOSITION_INHERIT);
proc = gs_subprocess_new (ctx, cancellable, error);
if (proc == NULL)
goto out;
if (!gs_subprocess_wait_sync_check (proc, cancellable, error))
{
g_prefix_error (error, "There was a problem with the editor '%s'.", editor);
goto out;
}
ret = gs_file_load_contents_utf8 (file, cancellable, error);
out:
if (file)
(void )g_file_delete (file, NULL, NULL);
return ret;
}
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