89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
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*
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* Copyright (C) 2011 Colin Walters <walters@verbum.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* Author: Colin Walters <walters@verbum.org>
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*/
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#include "config.h"
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#include "ot-main.h"
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#include "ot-builtins.h"
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#include "ostree.h"
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#include "otutil.h"
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#include <gio/gunixoutputstream.h>
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/* ATTENTION:
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* Please remember to update the bash-completion script (bash/ostree) and
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* man page (man/ostree-cat.xml) when changing the option list.
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*/
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static GOptionEntry options[] = {
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{ NULL },
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};
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static gboolean
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cat_one_file (GFile *f,
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GOutputStream *stdout_stream,
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GCancellable *cancellable,
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GError **error)
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{
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g_autoptr(GInputStream) in = (GInputStream*)g_file_read (f, cancellable, error);
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if (!in)
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return FALSE;
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if (g_output_stream_splice (stdout_stream, in, G_OUTPUT_STREAM_SPLICE_CLOSE_SOURCE,
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cancellable, error) < 0)
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return FALSE;
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return TRUE;
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}
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gboolean
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ostree_builtin_cat (int argc, char **argv, GCancellable *cancellable, GError **error)
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{
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g_autoptr(GOptionContext) context = g_option_context_new ("COMMIT PATH... - Concatenate contents of files");
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g_autoptr(OstreeRepo) repo = NULL;
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if (!ostree_option_context_parse (context, options, &argc, &argv, OSTREE_BUILTIN_FLAG_NONE, &repo, cancellable, error))
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return FALSE;
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if (argc <= 2)
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{
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ot_util_usage_error (context, "A COMMIT and at least one PATH argument are required", error);
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return FALSE;
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}
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const char *rev = argv[1];
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g_autoptr(GFile) root = NULL;
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if (!ostree_repo_read_commit (repo, rev, &root, NULL, NULL, error))
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return FALSE;
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g_autoptr(GOutputStream) stdout_stream = g_unix_output_stream_new (1, FALSE);
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for (int i = 2; i < argc; i++)
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{
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g_autoptr(GFile) f = g_file_resolve_relative_path (root, argv[i]);
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if (!cat_one_file (f, stdout_stream, cancellable, error))
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return FALSE;
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}
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return TRUE;
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}
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