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179 lines
10 KiB
179 lines
10 KiB
/*
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XOWA: the XOWA Offline Wiki Application
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Copyright (C) 2012 gnosygnu@gmail.com
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program 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
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package gplx;
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import gplx.core.primitives.*; import gplx.core.ios.*; /*IoItmFil, IoItmDir..*/ import gplx.core.ios.streams.*; import gplx.core.ios.loaders.*;
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public class Io_mgr implements Gfo_evt_mgr_owner { // exists primarily to gather all cmds under gplx namespace; otherwise need to use gplx.core.ios whenever copying/deleting file
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public Io_mgr() {evt_mgr = new Gfo_evt_mgr(this);}
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public Gfo_evt_mgr Evt_mgr() {return evt_mgr;} private final Gfo_evt_mgr evt_mgr;
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public boolean Exists(Io_url url) {return url.Type_dir() ? ExistsDir(url) : ExistsFil(url);}
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public boolean ExistsFil(Io_url url) {return IoEnginePool.Instance.Get_by(url.Info().EngineKey()).ExistsFil_api(url);}
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public void ExistsFilOrFail(Io_url url) {if (!ExistsFil(url)) throw Err_.new_wo_type("could not find file", "url", url);}
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public void SaveFilStr(String url, String text) {SaveFilStr_args(Io_url_.new_fil_(url), text).Exec();}
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public void SaveFilStr(Io_url url, String text) {SaveFilStr_args(url, text).Exec();}
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public IoEngine_xrg_saveFilStr SaveFilStr_args(Io_url url, String text) {return IoEngine_xrg_saveFilStr.new_(url, text);}
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public void AppendFilStr(String url, String text) {AppendFilStr(Io_url_.new_fil_(url), text);}
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public void AppendFilStr(Io_url url, String text) {SaveFilStr_args(url, text).Append_(true).Exec();}
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public void DeleteFil(Io_url url) {DeleteFil_args(url).Exec();}
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public IoEngine_xrg_deleteFil DeleteFil_args(Io_url url) {return IoEngine_xrg_deleteFil.new_(url);}
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public void MoveFil(Io_url src, Io_url trg) {IoEngine_xrg_xferFil.move_(src, trg).Exec();}
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public IoEngine_xrg_xferFil MoveFil_args(Io_url src, Io_url trg, boolean overwrite) {return IoEngine_xrg_xferFil.move_(src, trg).Overwrite_(overwrite);}
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public void CopyFil(Io_url src, Io_url trg, boolean overwrite) {IoEngine_xrg_xferFil.copy_(src, trg).Overwrite_(overwrite).Exec();}
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public IoEngine_xrg_xferFil CopyFil_args(Io_url src, Io_url trg, boolean overwrite) {return IoEngine_xrg_xferFil.copy_(src, trg).Overwrite_(overwrite);}
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public IoRecycleBin RecycleBin() {return recycleBin;} private IoRecycleBin recycleBin = IoRecycleBin.Instance;
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public Io_loader Loader() {return loader;} public void Loader_(Io_loader v) {this.loader = v;} private Io_loader loader;
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public IoStream OpenStreamWrite(Io_url url) {return OpenStreamWrite_args(url).Exec();}
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public IoEngine_xrg_openWrite OpenStreamWrite_args(Io_url url) {return IoEngine_xrg_openWrite.new_(url);}
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public IoItmFil QueryFil(Io_url url) {return IoEnginePool.Instance.Get_by(url.Info().EngineKey()).QueryFil(url);}
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public void UpdateFilAttrib(Io_url url, IoItmAttrib attrib) {IoEnginePool.Instance.Get_by(url.Info().EngineKey()).UpdateFilAttrib(url, attrib);}
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public void UpdateFilModifiedTime(Io_url url, DateAdp modified) {IoEnginePool.Instance.Get_by(url.Info().EngineKey()).UpdateFilModifiedTime(url, modified);}
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public boolean ExistsDir(Io_url url) {return IoEnginePool.Instance.Get_by(url.Info().EngineKey()).ExistsDir(url);}
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public void CreateDir(Io_url url) {IoEnginePool.Instance.Get_by(url.Info().EngineKey()).CreateDir(url);}
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public boolean CreateDirIfAbsent(Io_url url) {
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boolean exists = ExistsDir(url);
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if (!exists) {
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CreateDir(url);
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return true;
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}
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return false;
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}
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public void Create_fil_ary(Io_fil[] fil_ary) {
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for (Io_fil fil : fil_ary)
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SaveFilStr(fil.Url(), fil.Data());
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}
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public Io_url[] QueryDir_fils(Io_url dir) {return QueryDir_args(dir).ExecAsUrlAry();}
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public IoEngine_xrg_queryDir QueryDir_args(Io_url dir) {return IoEngine_xrg_queryDir.new_(dir);}
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public void DeleteDirSubs(Io_url url) {IoEngine_xrg_deleteDir.new_(url).Exec();}
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public IoEngine_xrg_deleteDir DeleteDir_cmd(Io_url url) {return IoEngine_xrg_deleteDir.new_(url);}
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public void DeleteDirDeep(Io_url url) {IoEngine_xrg_deleteDir.new_(url).Recur_().Exec();}
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public void DeleteDirDeep_ary(Io_url... urls) {for (Io_url url : urls) IoEngine_xrg_deleteDir.new_(url).Recur_().Exec();}
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public int Delete_dir_empty(Io_url url) {return Io_mgr_.Delete_dir_empty(url);}
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public void Delete_sub_by_wildcard() {
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}
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public boolean Truncate_fil(Io_url url, long size) {return IoEnginePool.Instance.Get_by(url.Info().EngineKey()).Truncate_fil(url, size);}
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public void MoveDirDeep(Io_url src, Io_url trg) {IoEngine_xrg_xferDir.move_(src, trg).Recur_().Exec();}
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public IoEngine_xrg_xferDir CopyDir_cmd(Io_url src, Io_url trg) {return IoEngine_xrg_xferDir.copy_(src, trg);}
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public void CopyDirSubs(Io_url src, Io_url trg) {IoEngine_xrg_xferDir.copy_(src, trg).Exec();}
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public void CopyDirDeep(Io_url src, Io_url trg) {IoEngine_xrg_xferDir.copy_(src, trg).Recur_().Exec();}
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public void DeleteDirIfEmpty(Io_url url) {
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if (Array_.Len(QueryDir_fils(url)) == 0)
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this.DeleteDirDeep(url);
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}
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public void AliasDir_sysEngine(String srcRoot, String trgRoot) {AliasDir(srcRoot, trgRoot, IoEngine_.SysKey);}
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public void AliasDir(String srcRoot, String trgRoot, String engineKey) {IoUrlInfoRegy.Instance.Reg(IoUrlInfo_.alias_(srcRoot, trgRoot, engineKey));}
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public IoStream OpenStreamRead(Io_url url) {return OpenStreamRead_args(url).ExecAsIoStreamOrFail();}
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public IoEngine_xrg_openRead OpenStreamRead_args(Io_url url) {return IoEngine_xrg_openRead.new_(url);}
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public String LoadFilStr(String url) {return LoadFilStr_args(Io_url_.new_fil_(url)).Exec();}
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public String LoadFilStr(Io_url url) {return LoadFilStr_args(url).Exec();}
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public IoEngine_xrg_loadFilStr LoadFilStr_args(Io_url url) {return IoEngine_xrg_loadFilStr.new_(url);}
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public byte[] LoadFilBryOrNull(Io_url url) {return LoadFilBryOr(url, null);}
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public byte[] LoadFilBryOr(Io_url url, byte[] or) {return ExistsFil(url) ? LoadFilBry(url) : or;}
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public byte[] LoadFilBry(String url) {return LoadFilBry_reuse(Io_url_.new_fil_(url), Bry_.Empty, Int_obj_ref.New_zero());}
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public byte[] LoadFilBry(Io_url url) {return LoadFilBry_reuse(url, Bry_.Empty, Int_obj_ref.New_zero());}
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public void LoadFilBryByBfr(Io_url url, Bry_bfr bfr) {
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Int_obj_ref len = Int_obj_ref.New_zero();
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byte[] bry = LoadFilBry_reuse(url, Bry_.Empty, len);
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bfr.Bfr_init(bry, len.Val());
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}
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public static final byte[] LoadFilBry_fail = Bry_.Empty;
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public byte[] LoadFilBry_reuse(Io_url url, byte[] ary, Int_obj_ref ary_len) {
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if (loader != null) {
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byte[] rv = loader.Load_fil_as_bry(url);
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if (rv != null) return rv;
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}
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if (!ExistsFil(url)) {
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ary_len.Val_(0);
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return LoadFilBry_fail;
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}
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IoStream stream = IoStream_.Null;
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try {
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stream = OpenStreamRead(url);
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int stream_len = (int)stream.Len();
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ary_len.Val_(stream_len);
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if (stream_len > ary.length)
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ary = new byte[stream_len];
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stream.ReadAry(ary);
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return ary;
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}
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catch (Exception e) {throw Err_.new_wo_type("failed to load file", "url", url.Xto_api(), "e", Err_.Message_lang(e));}
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finally {stream.Rls();}
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}
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public byte[] LoadFilBry_loose(Io_url url) {return Bry_.new_u8(LoadFilStr_loose(url));}
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public String LoadFilStr_loose(Io_url url) {
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String rv = LoadFilStr_args(url).BomUtf8Convert_(Bool_.Y).MissingIgnored_(Bool_.Y).Exec();
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if (String_.Has(rv, "\r\n"))
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rv = String_.Replace(rv, "\r\n", "\n");
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return rv;
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}
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public void AppendFilBfr(Io_url url, Bry_bfr bfr) {AppendFilByt(url, bfr.Bfr(), 0, bfr.Len()); bfr.ClearAndReset();}
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public void AppendFilByt(Io_url url, byte[] val) {AppendFilByt(url, val, 0, val.length);}
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public void AppendFilByt(Io_url url, byte[] val, int len) {AppendFilByt(url, val, 0, len);}
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public void AppendFilByt(Io_url url, byte[] val, int bgn, int len) {
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IoStream stream = IoStream_.Null;
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try {
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stream = OpenStreamWrite_args(url).Mode_(IoStream_.Mode_wtr_append).Exec();
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stream.Write(val, bgn, len);
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} finally {stream.Rls();}
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}
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public void SaveFilBfr(Io_url url, Bry_bfr bfr) {SaveFilBry(url, bfr.Bfr(), bfr.Len()); bfr.Clear();}
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public void SaveFilBry(String urlStr, byte[] val) {SaveFilBry(Io_url_.new_fil_(urlStr), val);}
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public void SaveFilBry(Io_url url, byte[] val) {SaveFilBry(url, val, val.length);}
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public void SaveFilBry(Io_url url, byte[] val, int len) {SaveFilBry(url, val, 0, len);}
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public void SaveFilBry(Io_url url, byte[] val, int bgn, int len) {
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IoStream stream = IoStream_.Null;
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try {
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stream = OpenStreamWrite(url);
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stream.Write(val, bgn, len);
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} finally {stream.Rls();}
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}
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public IoEngine InitEngine_mem() {return IoEngine_.Mem_init_();}
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public IoEngine InitEngine_mem_(String key) {
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IoEngine engine = IoEngine_.mem_new_(key);
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IoEnginePool.Instance.Add_if_dupe_use_nth(engine);
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IoUrlInfoRegy.Instance.Reg(IoUrlInfo_.mem_(key, key));
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return engine;
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}
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public boolean DownloadFil(String src, Io_url trg) {return IoEngine_xrg_downloadFil.new_(src, trg).Exec();}
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public IoEngine_xrg_downloadFil DownloadFil_args(String src, Io_url trg) {return IoEngine_xrg_downloadFil.new_(src, trg);}
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public static final Io_mgr Instance = new Io_mgr();
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public static final int Len_kb = 1024, Len_mb = 1048576, Len_gb = 1073741824, Len_gb_2 = 2147483647;
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public static final long Len_mb_long = Len_mb;
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public static final long Len_null = -1;
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public static final String Evt__fil_created = "fil_created";
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}
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class Io_mgr_ {
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public static int Delete_dir_empty(Io_url url) {
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IoItmDir dir = Io_mgr.Instance.QueryDir_args(url).ExecAsDir();
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int sub_dirs_len = dir.SubDirs().Count();
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int deleted_dirs = 0;
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for (int i = 0; i < sub_dirs_len; ++i) {
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IoItmDir sub_dir = (IoItmDir)dir.SubDirs().Get_at(i);
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deleted_dirs += Io_mgr.Instance.Delete_dir_empty(sub_dir.Url());
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}
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if ( dir.SubFils().Count() == 0
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&& deleted_dirs == sub_dirs_len
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) {
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Io_mgr.Instance.DeleteDirIfEmpty(url);
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return 1;
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}
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else
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return 0;
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}
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}
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