Ruixin Bao
9166605e5a
This is similar idea as https://github.com/projectatomic/rpm-ostree/pull/916/commits/5c0bf889155573feec108501ce849ac09a0c9567, The duplicated description is now removed, and the description of the command is now displayed beneath the Usage. For example: ostree cat -h will output the following: "Usage: ostree cat [OPTION?] COMMIT PATH... Concatenate contents of files" Closes: #1267 Approved by: cgwalters
106 lines
3.2 KiB
C
106 lines
3.2 KiB
C
/*
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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 <string.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-checksum.xml) when changing the option list.
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*/
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static gboolean opt_ignore_xattrs;
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static GOptionEntry options[] = {
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{ "ignore-xattrs", 0, 0, G_OPTION_ARG_NONE, &opt_ignore_xattrs, "Don't include xattrs in checksum", NULL },
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{ NULL }
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};
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typedef struct {
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GError **error;
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gboolean success;
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GMainLoop *loop;
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} AsyncChecksumData;
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static void
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on_checksum_received (GObject *obj,
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GAsyncResult *result,
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gpointer user_data)
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{
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AsyncChecksumData *data = user_data;
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g_autofree guchar *csum_bytes = NULL;
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data->success =
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ostree_checksum_file_async_finish ((GFile*)obj, result, &csum_bytes, data->error);
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if (data->success)
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{
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char csum[OSTREE_SHA256_STRING_LEN+1];
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ostree_checksum_inplace_from_bytes (csum_bytes, csum);
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g_print ("%s\n", csum);
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}
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g_main_loop_quit (data->loop);
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}
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gboolean
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ostree_builtin_checksum (int argc, char **argv, OstreeCommandInvocation *invocation, GCancellable *cancellable, GError **error)
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{
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g_autoptr(GOptionContext) context =
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g_option_context_new ("PATH");
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if (!ostree_option_context_parse (context, options, &argc, &argv,
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invocation, NULL, cancellable, error))
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return FALSE;
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if (argc < 2)
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return glnx_throw (error, "A filename must be given");
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const char *path = argv[1];
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/* for test coverage, use the async API if no flags are needed */
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if (!opt_ignore_xattrs)
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{
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g_autoptr(GFile) f = g_file_new_for_path (path);
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g_autoptr(GMainLoop) loop = g_main_loop_new (NULL, FALSE);
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AsyncChecksumData data = { 0, };
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data.loop = loop;
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data.error = error;
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ostree_checksum_file_async (f, OSTREE_OBJECT_TYPE_FILE, G_PRIORITY_DEFAULT,
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cancellable, on_checksum_received, &data);
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g_main_loop_run (data.loop);
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return data.success;
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}
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g_autofree char *checksum = NULL;
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if (!ostree_checksum_file_at (AT_FDCWD, path, NULL, OSTREE_OBJECT_TYPE_FILE,
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OSTREE_CHECKSUM_FLAGS_IGNORE_XATTRS, &checksum,
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cancellable, error))
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return FALSE;
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g_print ("%s\n", checksum);
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return TRUE;
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}
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