Node / meshtastic / Meshtastic-Android / files / androidApp / src / google / kotlin / org / meshtastic / app / map / offline / pmtiles / OfflineVectorArchive.kt

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T8b949e/*

* Copyright (c) 2026 Meshtastic LLC

*

* This program 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 3 of the License, or

* (at your option) any later version.

*

* This program 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 this program. If not, see <https://www.gnu.org/licenses/>.

*/

Tff7b72package T7ee787org.meshtastic.app.map.offline.pmtiles

Tff7b72import T7ee787android.content.ContentValues

Tff7b72import T7ee787android.database.sqlite.SQLiteDatabase

Tff7b72import T7ee787java.io.File

T8b949e/**

* A downloaded offline region, stored on disk as a standard `.mbtiles` archive (`tiles`/`metadata` tables, TMS row

* numbering) holding MVT tiles — the same container format [org.meshtastic.app.map.MBTilesProvider] already reads for

* raster imports, just with `format=pbf` instead of a raster format. Tiles are stored decompressed:

* [OfflineRegionExtractor] gunzips each one before [writeTile], trading more disk per tile for a simpler read path with

* no per-read inflate. Any generic MBTiles tool can still open a region this writes; nothing here is a bespoke format.

*/

Tff7b72internal Tff7b72class T56d364OfflineVectorArchive Te6edf3private Tff7b72constructorTb4b4b4(Tff7b72private Tff7b72val Te6edf3databaseTb4b4b4: Te6edf3SQLiteDatabaseTb4b4b4) Tb4b4b4: Te6edf3AutoCloseable Tb4b4b4{

Tff7b72fun Td2a8ffwriteTileTb4b4b4(Te6edf3zoomTb4b4b4: Tffa657IntTb4b4b4, Te6edf3xTb4b4b4: Tffa657IntTb4b4b4, Te6edf3yTb4b4b4: Tffa657IntTb4b4b4, Te6edf3gzippedTileTb4b4b4: Te6edf3ByteArrayTb4b4b4) Tb4b4b4{

Tff7b72val Te6edf3values Tff7b72=

Te6edf3ContentValuesTb4b4b4(Tb4b4b4)Tb4b4b4.Te6edf3apply Tb4b4b4{

Te6edf3putTb4b4b4(Te6edf3COLUMN_ZOOMTb4b4b4, Te6edf3zoomTb4b4b4)

Te6edf3putTb4b4b4(Te6edf3COLUMN_COLUMNTb4b4b4, Te6edf3xTb4b4b4)

Te6edf3putTb4b4b4(Te6edf3COLUMN_ROWTb4b4b4, Te6edf3tmsRowTb4b4b4(Te6edf3zoomTb4b4b4, Te6edf3yTb4b4b4)Tb4b4b4)

Te6edf3putTb4b4b4(Te6edf3COLUMN_DATATb4b4b4, Te6edf3gzippedTileTb4b4b4)

Tb4b4b4}

Te6edf3databaseTb4b4b4.Te6edf3insertWithOnConflictTb4b4b4(Te6edf3TABLE_TILESTb4b4b4, Tff7b72nullTb4b4b4, Te6edf3valuesTb4b4b4, Te6edf3SQLiteDatabaseTb4b4b4.Te6edf3CONFLICT_REPLACETb4b4b4)

Tb4b4b4}

T8b949e/** The gzip-compressed tile bytes at (zoom, x, y) — google/osm XYZ, matching [ch.poole.geo.pmtiles.Reader]. */

Tff7b72fun Td2a8ffreadTileTb4b4b4(Te6edf3zoomTb4b4b4: Tffa657IntTb4b4b4, Te6edf3xTb4b4b4: Tffa657IntTb4b4b4, Te6edf3yTb4b4b4: Tffa657IntTb4b4b4)Tb4b4b4: Te6edf3ByteArray? Tff7b72= Te6edf3database

Tb4b4b4.Te6edf3rawQueryTb4b4b4(

Ta5d6ff"Ta5d6ffSELECT Tffd700$Te6edf3COLUMN_DATATa5d6ff FROM Tffd700$Te6edf3TABLE_TILESTa5d6ff WHERE Tffd700$Te6edf3COLUMN_ZOOMTa5d6ff = ? AND Tffd700$Te6edf3COLUMN_COLUMNTa5d6ff = ? AND Tffd700$Te6edf3COLUMN_ROWTa5d6ff = ?Ta5d6ff"Tb4b4b4,

Te6edf3arrayOfTb4b4b4(Te6edf3zoomTb4b4b4.Te6edf3toStringTb4b4b4(Tb4b4b4)Tb4b4b4, Te6edf3xTb4b4b4.Te6edf3toStringTb4b4b4(Tb4b4b4)Tb4b4b4, Te6edf3tmsRowTb4b4b4(Te6edf3zoomTb4b4b4, Te6edf3yTb4b4b4)Tb4b4b4.Te6edf3toStringTb4b4b4(Tb4b4b4)Tb4b4b4)Tb4b4b4,

Tb4b4b4)

Tb4b4b4.Te6edf3use Tb4b4b4{ Te6edf3cursor Tff7b72-Tff7b72> Tff7b72if Tb4b4b4(Te6edf3cursorTb4b4b4.Te6edf3moveToFirstTb4b4b4(Tb4b4b4)Tb4b4b4) Te6edf3cursorTb4b4b4.Te6edf3getBlobTb4b4b4(T79c0ff0Tb4b4b4) Tff7b72else Tff7b72null Tb4b4b4}

Tff7b72fun Td2a8fftileCountTb4b4b4(Tb4b4b4)Tb4b4b4: Tffa657Long Tff7b72= Te6edf3databaseTb4b4b4.Te6edf3rawQueryTb4b4b4(Ta5d6ff"Ta5d6ffSELECT COUNT(*) FROM Tffd700$Te6edf3TABLE_TILESTa5d6ff"Tb4b4b4, Tff7b72nullTb4b4b4)Tb4b4b4.Te6edf3use Tb4b4b4{ Te6edf3cursor Tff7b72-Tff7b72>

Te6edf3cursorTb4b4b4.Te6edf3moveToFirstTb4b4b4(Tb4b4b4)

Te6edf3cursorTb4b4b4.Te6edf3getLongTb4b4b4(T79c0ff0Tb4b4b4)

Tb4b4b4}

Tff7b72override Tff7b72fun Td2a8ffcloseTb4b4b4(Tb4b4b4) Tb4b4b4{

Te6edf3databaseTb4b4b4.Te6edf3closeTb4b4b4(Tb4b4b4)

Tb4b4b4}

Tff7b72private Tff7b72fun Td2a8fftmsRowTb4b4b4(Te6edf3zoomTb4b4b4: Tffa657IntTb4b4b4, Te6edf3xyzYTb4b4b4: Tffa657IntTb4b4b4)Tb4b4b4: Tffa657Int Tff7b72= Tb4b4b4(T79c0ff1 Te6edf3shl Te6edf3zoomTb4b4b4) Tff7b72- T79c0ff1 Tff7b72- Te6edf3xyzY

Tff7b72companion Tff7b72object Tb4b4b4{

Tff7b72private Tff7b72const Tff7b72val Te6edf3TABLE_TILES Tff7b72= Ta5d6ff"Ta5d6fftilesTa5d6ff"

Tff7b72private Tff7b72const Tff7b72val Te6edf3COLUMN_ZOOM Tff7b72= Ta5d6ff"Ta5d6ffzoom_levelTa5d6ff"

Tff7b72private Tff7b72const Tff7b72val Te6edf3COLUMN_COLUMN Tff7b72= Ta5d6ff"Ta5d6fftile_columnTa5d6ff"

Tff7b72private Tff7b72const Tff7b72val Te6edf3COLUMN_ROW Tff7b72= Ta5d6ff"Ta5d6fftile_rowTa5d6ff"

Tff7b72private Tff7b72const Tff7b72val Te6edf3COLUMN_DATA Tff7b72= Ta5d6ff"Ta5d6fftile_dataTa5d6ff"

T8b949e/** Creates a fresh archive at [file], overwriting anything already there. */

Tff7b72fun Td2a8ffcreateTb4b4b4(Te6edf3fileTb4b4b4: Te6edf3FileTb4b4b4, Te6edf3attributionTb4b4b4: Tffa657StringTb4b4b4)Tb4b4b4: Te6edf3OfflineVectorArchive Tb4b4b4{

Te6edf3fileTb4b4b4.Te6edf3deleteTb4b4b4(Tb4b4b4)

Tff7b72val Te6edf3database Tff7b72= Te6edf3SQLiteDatabaseTb4b4b4.Te6edf3openOrCreateDatabaseTb4b4b4(Te6edf3fileTb4b4b4, Tff7b72nullTb4b4b4)

Te6edf3databaseTb4b4b4.Te6edf3execSQLTb4b4b4(

Ta5d6ff"Ta5d6ffCREATE TABLE Tffd700$Te6edf3TABLE_TILESTa5d6ff (Ta5d6ff" Tff7b72+

Ta5d6ff"Tffd700$Te6edf3COLUMN_ZOOMTa5d6ff INTEGER, Tffd700$Te6edf3COLUMN_COLUMNTa5d6ff INTEGER, Tffd700$Te6edf3COLUMN_ROWTa5d6ff INTEGER, Tffd700$Te6edf3COLUMN_DATATa5d6ff BLOB, Ta5d6ff" Tff7b72+

Ta5d6ff"Ta5d6ffPRIMARY KEY (Tffd700$Te6edf3COLUMN_ZOOMTa5d6ff, Tffd700$Te6edf3COLUMN_COLUMNTa5d6ff, Tffd700$Te6edf3COLUMN_ROWTa5d6ff))Ta5d6ff"Tb4b4b4,

Tb4b4b4)

Te6edf3databaseTb4b4b4.Te6edf3execSQLTb4b4b4(Ta5d6ff"Ta5d6ffCREATE TABLE metadata (name TEXT, value TEXT)Ta5d6ff"Tb4b4b4)

Tff7b72val Te6edf3metadata Tff7b72=

Te6edf3mapOfTb4b4b4(

Ta5d6ff"Ta5d6ffnameTa5d6ff" Te6edf3to Ta5d6ff"Ta5d6ffMeshtastic offline regionTa5d6ff"Tb4b4b4,

Ta5d6ff"Ta5d6ffformatTa5d6ff" Te6edf3to Ta5d6ff"Ta5d6ffpbfTa5d6ff"Tb4b4b4,

Ta5d6ff"Ta5d6ffattributionTa5d6ff" Te6edf3to Te6edf3attributionTb4b4b4,

Ta5d6ff"Ta5d6fftypeTa5d6ff" Te6edf3to Ta5d6ff"Ta5d6ffbaselayerTa5d6ff"Tb4b4b4,

Tb4b4b4)

Te6edf3metadataTb4b4b4.Te6edf3forEach Tb4b4b4{ Tb4b4b4(Te6edf3nameTb4b4b4, Te6edf3valueTb4b4b4) Tff7b72-Tff7b72>

Te6edf3databaseTb4b4b4.Te6edf3insertTb4b4b4(

Ta5d6ff"Ta5d6ffmetadataTa5d6ff"Tb4b4b4,

Tff7b72nullTb4b4b4,

Te6edf3ContentValuesTb4b4b4(Tb4b4b4)Tb4b4b4.Te6edf3apply Tb4b4b4{

Te6edf3putTb4b4b4(Ta5d6ff"Ta5d6ffnameTa5d6ff"Tb4b4b4, Te6edf3nameTb4b4b4)

Te6edf3putTb4b4b4(Ta5d6ff"Ta5d6ffvalueTa5d6ff"Tb4b4b4, Te6edf3valueTb4b4b4)

Tb4b4b4}Tb4b4b4,

Tb4b4b4)

Tb4b4b4}

Tff7b72return Te6edf3OfflineVectorArchiveTb4b4b4(Te6edf3databaseTb4b4b4)

Tb4b4b4}

T8b949e/** Opens an already-downloaded archive read-only. */

Tff7b72fun Td2a8ffopenTb4b4b4(Te6edf3fileTb4b4b4: Te6edf3FileTb4b4b4)Tb4b4b4: Te6edf3OfflineVectorArchive? Tff7b72= Tff7b72if Tb4b4b4(Te6edf3fileTb4b4b4.Te6edf3existsTb4b4b4(Tb4b4b4)Tb4b4b4) Tb4b4b4{

Te6edf3OfflineVectorArchiveTb4b4b4(Te6edf3SQLiteDatabaseTb4b4b4.Te6edf3openDatabaseTb4b4b4(Te6edf3fileTb4b4b4.Te6edf3absolutePathTb4b4b4, Tff7b72nullTb4b4b4, Te6edf3SQLiteDatabaseTb4b4b4.Te6edf3OPEN_READONLYTb4b4b4)Tb4b4b4)

Tb4b4b4} Tff7b72else Tb4b4b4{

Tff7b72null

Tb4b4b4}

Tb4b4b4}

Tb4b4b4}