Node / meshtastic / Meshtastic-Android / files / androidApp / src / main / kotlin / org / meshtastic / app / map / MapLayer.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

Tff7b72import T7ee787java.io.InputStream

T8b949e// All that is left of the Android side of map layers once the store moved to `feature/map`: sniffing a stream, which

T8b949e// only this app's KML/KMZ readers do.

T8b949e/** Zip magic bytes; a KML-typed source starting with these is a KMZ archive rather than bare KML. */

Tff7b72private Tff7b72val Te6edf3KMZ_MAGIC Tff7b72= Te6edf3byteArrayOfTb4b4b4(Ta5d6ff'P'Tb4b4b4.Te6edf3codeTb4b4b4.Te6edf3toByteTb4b4b4(Tb4b4b4)Tb4b4b4, Ta5d6ff'K'Tb4b4b4.Te6edf3codeTb4b4b4.Te6edf3toByteTb4b4b4(Tb4b4b4)Tb4b4b4)

T8b949e/**

* True if [this] starts with the zip magic bytes, meaning a nominally-[LayerType.KML] source (`.kml` and `.kmz` both

* resolve to that one type — see [KML_EXTENSIONS]) is actually a KMZ archive. Shared by both flavors' parsers so

* neither has to duplicate the sniff or trust the file extension, which the content resolver can get wrong.

*

* Requires a mark-capable stream (wrap with [java.io.BufferedInputStream] first if unsure); leaves the stream position

* unchanged either way.

*/

Tff7b72fun Te6edf3InputStreamTb4b4b4.Td2a8ffisKmzArchiveTb4b4b4(Tb4b4b4)Tb4b4b4: Tffa657Boolean Tb4b4b4{

Te6edf3markTb4b4b4(Te6edf3KMZ_MAGICTb4b4b4.Te6edf3sizeTb4b4b4)

Tff7b72val Te6edf3magic Tff7b72= Te6edf3ByteArrayTb4b4b4(Te6edf3KMZ_MAGICTb4b4b4.Te6edf3sizeTb4b4b4)

T8b949e// read(ByteArray) is only guaranteed to return at least 1 byte before EOF, not to fill the buffer — loop rather

T8b949e// than trust a single call, or a short read could misclassify a real KMZ as bare KML.

Tff7b72var Te6edf3totalRead Tff7b72= T79c0ff0

Tff7b72while Tb4b4b4(Te6edf3totalRead Tff7b72< Te6edf3magicTb4b4b4.Te6edf3sizeTb4b4b4) Tb4b4b4{

Tff7b72val Te6edf3read Tff7b72= Te6edf3readTb4b4b4(Te6edf3magicTb4b4b4, Te6edf3totalReadTb4b4b4, Te6edf3magicTb4b4b4.Te6edf3size Tff7b72- Te6edf3totalReadTb4b4b4)

Tff7b72if Tb4b4b4(Te6edf3read Tff7b72=Tff7b72= Tff7b72-T79c0ff1Tb4b4b4) Tff7b72break

Te6edf3totalRead Tff7b72+Tff7b72= Te6edf3read

Tb4b4b4}

Te6edf3resetTb4b4b4(Tb4b4b4)

Tff7b72return Te6edf3totalRead Tff7b72=Tff7b72= Te6edf3KMZ_MAGICTb4b4b4.Te6edf3size Tff7b72&Tff7b72& Te6edf3magicTb4b4b4.Te6edf3contentEqualsTb4b4b4(Te6edf3KMZ_MAGICTb4b4b4)

Tb4b4b4}