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Albert Kharisov 1dc78b572d
Fix memory leak in issue #46 
Fix memory leak found in
https://github.com/BertoldVdb/ZoneDetect/issues/46.
Free memory which is not used nor freed nor returned
from a function.
2025-12-16 18:52:30 +04:00
aws_lambda Avoid broken patch that uses dpkg on CentOS 2022-11-01 15:39:55 +01:00
database Update download URLs to make new version 2024-09-13 22:38:34 +02:00
library Fix memory leak in issue #46 2025-12-16 18:52:30 +04:00
vs15 added support for MSVC toolchain (VS 15.x) 2019-04-04 11:40:36 +02:00
.gitignore adds some files generated by visual studio to git ignore list 2022-04-11 08:46:08 +02:00
demo.c Replace node.js lambda with C++ one 2019-11-10 01:55:24 +01:00
LICENSE Add license file 2019-11-17 23:48:10 +01:00
Makefile Add a Makefile and more documentation for the demo 2020-01-24 16:27:31 -05:00
README.md Add a Makefile and more documentation for the demo 2020-01-24 16:27:31 -05:00

README.md

ZoneDetect

This is a C library that allows you to find an area a point belongs to using a database file. A typical example would be looking up the country or timezone given a latitude and longitude. The timezone database also contains the country information.

The API should be self-explanatory from zonedetect.h. A small demo is included (demo.c). You can build the demo with make demo and run it like this: ./demo timezone21.bin 35.0715 -82.5216.

The databases are obtained from here and converted to the format used by this library.

Online API

You can test the library using an online API: https://timezone.bertold.org/timezone It takes the following GET parameters:

  • lat: Latitude.
  • lon: Longitude.
  • c: Set to one (c=1) to produce compact JSON.
  • s: Set to one (s=1) to get only the timezone.

For example: https://timezone.bertold.org/timezone?lat=51&lon=5
You are free to use this API for any application, but I am not responsible for the quality of service. Please contact me if your application requires reliability.

Demo

An online demo is available here: https://cdn.bertold.org/demo/timezone.html. Simple click anywhere on the map and see the result of the query.

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