gitg/libgitg/gitg-stage-status-enumerator.vala
2015-08-01 14:03:34 +02:00

406 lines
8.2 KiB
Vala

/*
* This file is part of gitg
*
* Copyright (C) 2013 - Jesse van den Kieboom
*
* gitg 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 2 of the License, or
* (at your option) any later version.
*
* gitg 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 gitg. If not, see <http://www.gnu.org/licenses/>.
*/
namespace Gitg
{
public interface StageStatusItem : Object
{
public abstract string path { owned get; }
public abstract bool is_staged { get; }
public abstract bool is_unstaged { get; }
public abstract bool is_untracked { get; }
public abstract string? icon_name { owned get; }
}
public class StageStatusFile : Object, StageStatusItem
{
private string d_path;
private Ggit.StatusFlags d_flags;
private static Ggit.StatusFlags s_index_flags =
Ggit.StatusFlags.INDEX_NEW
| Ggit.StatusFlags.INDEX_MODIFIED
| Ggit.StatusFlags.INDEX_DELETED
| Ggit.StatusFlags.INDEX_RENAMED
| Ggit.StatusFlags.INDEX_TYPECHANGE;
private static Ggit.StatusFlags s_work_flags =
Ggit.StatusFlags.WORKING_TREE_MODIFIED
| Ggit.StatusFlags.WORKING_TREE_DELETED
| Ggit.StatusFlags.WORKING_TREE_TYPECHANGE;
private static Ggit.StatusFlags s_untracked_flags =
Ggit.StatusFlags.WORKING_TREE_NEW;
public StageStatusFile(string path, Ggit.StatusFlags flags)
{
d_path = path;
d_flags = flags;
}
public string path
{
owned get { return d_path; }
}
public bool is_staged
{
get { return (d_flags & s_index_flags) != 0; }
}
public bool is_unstaged
{
get { return (d_flags & s_work_flags) != 0; }
}
public bool is_untracked
{
get { return (d_flags & s_untracked_flags) != 0; }
}
public Ggit.StatusFlags flags
{
get { return d_flags; }
}
private string? icon_for_status(Ggit.StatusFlags status)
{
if ((status & (Ggit.StatusFlags.INDEX_NEW |
Ggit.StatusFlags.WORKING_TREE_NEW)) != 0)
{
return "list-add-symbolic";
}
else if ((status & (Ggit.StatusFlags.INDEX_MODIFIED |
Ggit.StatusFlags.INDEX_RENAMED |
Ggit.StatusFlags.INDEX_TYPECHANGE |
Ggit.StatusFlags.WORKING_TREE_MODIFIED |
Ggit.StatusFlags.WORKING_TREE_TYPECHANGE)) != 0)
{
return "text-editor-symbolic";
}
else if ((status & (Ggit.StatusFlags.INDEX_DELETED |
Ggit.StatusFlags.WORKING_TREE_DELETED)) != 0)
{
return "edit-delete-symbolic";
}
return null;
}
public string? icon_name
{
owned get { return icon_for_status(d_flags); }
}
}
public class StageStatusSubmodule : Object, StageStatusItem
{
private Ggit.Submodule d_submodule;
private string d_path;
private Ggit.SubmoduleStatus d_flags;
private static Ggit.SubmoduleStatus s_index_flags =
Ggit.SubmoduleStatus.INDEX_ADDED
| Ggit.SubmoduleStatus.INDEX_DELETED
| Ggit.SubmoduleStatus.INDEX_MODIFIED;
private static Ggit.SubmoduleStatus s_work_flags =
Ggit.SubmoduleStatus.WD_ADDED
| Ggit.SubmoduleStatus.WD_DELETED
| Ggit.SubmoduleStatus.WD_MODIFIED;
private static Ggit.SubmoduleStatus s_untracked_flags =
Ggit.SubmoduleStatus.IN_WD;
private static Ggit.SubmoduleStatus s_tracked_flags =
Ggit.SubmoduleStatus.IN_HEAD
| Ggit.SubmoduleStatus.IN_INDEX;
private static Ggit.SubmoduleStatus s_dirty_flags =
Ggit.SubmoduleStatus.WD_INDEX_MODIFIED
| Ggit.SubmoduleStatus.WD_WD_MODIFIED;
public StageStatusSubmodule(Ggit.Submodule submodule)
{
d_submodule = submodule;
d_path = submodule.get_path();
var repository = submodule.get_owner();
try
{
d_flags = repository.get_submodule_status(submodule.get_name(),
Ggit.SubmoduleIgnore.UNTRACKED);
} catch {}
}
public Ggit.Submodule submodule
{
get { return d_submodule; }
}
public string path
{
owned get { return d_path; }
}
public bool is_staged
{
get { return (d_flags & s_index_flags) != 0; }
}
public bool is_unstaged
{
get { return !is_untracked && (d_flags & s_work_flags) != 0; }
}
public bool is_untracked
{
get
{
return (d_flags & s_untracked_flags) != 0
&& (d_flags & s_tracked_flags) == 0;
}
}
public bool is_dirty
{
get { return (d_flags & s_dirty_flags) != 0; }
}
public Ggit.SubmoduleStatus flags
{
get { return d_flags; }
}
public string? icon_name {
owned get { return "folder-remote-symbolic"; }
}
}
public class StageStatusEnumerator : Object
{
private Repository d_repository;
private Thread<void *> d_thread;
private StageStatusItem[] d_items;
private int d_offset;
private int d_callback_num;
private Cancellable d_cancellable;
private SourceFunc d_callback;
private Ggit.StatusOptions? d_options;
private Gee.HashSet<string> d_ignored_submodules;
private static Regex s_ignore_regex;
static construct
{
try
{
s_ignore_regex = new Regex("submodule\\.(.*)\\.gitgignore");
}
catch (Error e)
{
stderr.printf(@"Failed to compile stage status enumerator regex: $(e.message)\n");
}
}
internal StageStatusEnumerator(Repository repository,
Ggit.StatusOptions? options = null)
{
d_repository = repository;
d_options = options;
d_items = new StageStatusItem[100];
d_items.length = 0;
d_cancellable = new Cancellable();
try
{
d_ignored_submodules = new Gee.HashSet<string>();
repository.get_config().snapshot().match_foreach(s_ignore_regex, (match, val) => {
if (val != "true")
{
return 0;
}
d_ignored_submodules.add(match.fetch(1));
return 0;
});
} catch {}
try
{
d_thread = new Thread<void *>.try("gitg-status-enumerator", run_status);
} catch {}
}
public void cancel()
{
lock (d_items)
{
if (d_cancellable != null)
{
d_cancellable.cancel();
}
}
if (d_thread != null)
{
d_thread.join();
d_thread = null;
}
}
private delegate void AddItem(StageStatusItem item);
private void *run_status()
{
AddItem add = (item) => {
lock (d_items)
{
d_items += item;
if (d_callback != null && d_callback_num != -1 && d_items.length >= d_callback_num)
{
var cb = (owned)d_callback;
d_callback = null;
Idle.add((owned)cb);
}
}
};
var submodule_paths = new Gee.HashSet<string>();
try
{
d_repository.submodule_foreach((submodule, name) => {
submodule_paths.add(submodule.get_path());
if (!d_ignored_submodules.contains(name))
{
try
{
add(new StageStatusSubmodule(d_repository.lookup_submodule(name)));
} catch {}
}
return d_cancellable.is_cancelled() ? 1 : 0;
});
} catch {}
try
{
d_repository.file_status_foreach(d_options, (path, flags) => {
if (!submodule_paths.contains(path))
{
add(new StageStatusFile(path, flags));
}
return d_cancellable.is_cancelled() ? 1 : 0;
});
} catch {}
lock (d_items)
{
d_cancellable = null;
if (d_callback != null && d_callback_num == -1)
{
var cb = (owned)d_callback;
d_callback = null;
Idle.add((owned)cb);
}
}
return null;
}
private StageStatusItem[] fill_items(int num)
{
int n = 0;
if (num == -1)
{
num = d_items.length - d_offset;
}
StageStatusItem[] ret = new StageStatusItem[int.min(num, d_items.length - d_offset)];
ret.length = 0;
// d_items is already locked here, so it's safe to access
while (d_offset < d_items.length)
{
if (n == num)
{
break;
}
ret += d_items[d_offset];
d_offset++;
++n;
}
return ret;
}
public async StageStatusItem[] next_items(int num)
{
SourceFunc callback = next_items.callback;
StageStatusItem[] ret;
lock (d_items)
{
if (d_cancellable == null)
{
// Already finished
return fill_items(num);
}
else
{
d_callback = (owned)callback;
d_callback_num = num;
}
}
yield;
lock (d_items)
{
ret = fill_items(num);
}
if (ret.length != num)
{
cancel();
}
return ret;
}
}
}
// ex:set ts=4 noet