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feat: add missing PhoneNumberToCarrierMapper feature that is available in java version#317

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wmundev wants to merge 6 commits intotwcclegg:mainfrom
wmundev:feature/carrier-mapper-phone-number
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feat: add missing PhoneNumberToCarrierMapper feature that is available in java version#317
wmundev wants to merge 6 commits intotwcclegg:mainfrom
wmundev:feature/carrier-mapper-phone-number

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@wmundev wmundev commented May 2, 2026

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  • feat: add missing PhoneNumberToCarrierMapper feature that is available in java version

@wmundev wmundev self-assigned this May 2, 2026
@wmundev wmundev requested a review from Copilot May 2, 2026 14:21
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Pull request overview

Adds a C# implementation of carrier-name lookup to bring the library closer to libphonenumber’s Java feature set, reusing the existing prefix-mapping/resource-loading model already used for offline geocoding.

Changes:

  • Add PhoneNumberToCarrierMapper and shared PrefixFileReader support for carrier prefix data from embedded folders or zip resources.
  • Expose PhoneNumberUtil.IsMobileNumberPortableRegion and add unit tests covering production, synthetic, and zipped carrier datasets.
  • Wire carrier resources into project files, CI/build scripts, ignore rules, and README usage/testing documentation.

Reviewed changes

Copilot reviewed 10 out of 11 changed files in this pull request and generated 1 comment.

Show a summary per file
File Description
csharp/PhoneNumbers/PrefixFileReader.cs New shared loader for prefix-based mapping data used by carrier lookups.
csharp/PhoneNumbers/PhoneNumbers.csproj Embeds carrier resources similarly to geocoding resources.
csharp/PhoneNumbers/PhoneNumberUtil.cs Adds region-level mobile-number-portability lookup API.
csharp/PhoneNumbers/PhoneNumberToCarrierMapper.cs Introduces the public carrier-mapper API and singleton access.
csharp/PhoneNumbers.Test/TestPhoneNumberToCarrierMapper.cs Adds production/test/zipped-path coverage for carrier lookup behavior.
csharp/PhoneNumbers.Test/PhoneNumbers.Test.csproj Embeds test carrier resources and zipped test archive.
appveyor.yml Updates Windows CI packaging steps for carrier resources.
README.md Documents carrier lookup usage and local test zip generation.
.gitignore Ignores generated carrier zip artifacts.
.github/workflows/run_all_tests_and_upload_code_coverage.yml Generates zipped test carrier data for Windows GitHub Actions.
.github/workflows/build_and_run_unit_tests_linux.yml Generates zipped test carrier data for Linux GitHub Actions.

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Comment thread appveyor.yml
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Pull request overview

Copilot reviewed 10 out of 12 changed files in this pull request and generated 2 comments.


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Comment thread README.md
Comment thread csharp/PhoneNumbers.Test/PhoneNumbers.Test.csproj
@wmundev wmundev requested a review from twcclegg May 2, 2026 15:06
@wmundev wmundev marked this pull request as ready for review May 2, 2026 15:06
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2 participants