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[PR #4093] [MERGED] Implement til::u8u16 and til::u16u8 conversion functions #25631

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opened 2026-01-31 09:10:44 +00:00 by claunia · 0 comments
claunia commented 2026-01-31 09:10:44 +00:00
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📋 Pull Request Information

Original PR: https://github.com/microsoft/terminal/pull/4093
Author: @german-one
Created: 12/31/2019
Status: ✅ Merged
Merged: 1/30/2020
Merged by: @DHowett-MSFT

Base: master ← Head: master

📝 Commits (10+)

  • 99f1bbe Implement UTF-8 <--> UTF-16 conversion in user mode.
  • 52cdbf4 formatting issues
  • b855a8f still formatting issues
  • c5e8f9e add Reset methods
  • 7789fb1 extend unit tests
  • 3a6a757 PR feedback for _OutputThread
  • 6671dcc PR feedback for Utf8Utf16Convert
  • b9e2e65 add U8U16Test to src\tools\
  • dbfcd83 remove shrink_to_fit()
  • 4f63dae fix quirks in test loops

📊 Changes

24 files changed (+2245 additions, -312 deletions)

View changed files

📝 OpenConsole.sln (+23 -0)
📝 src/cascadia/TerminalConnection/ConptyConnection.cpp (+25 -13)
📝 src/cascadia/TerminalConnection/ConptyConnection.h (+4 -0)
📝 src/inc/til.h (+1 -0)
➕ src/inc/til/u8u16convert.h (+458 -0)
📝 src/til/ut_til/til.unit.tests.vcxproj (+1 -0)
➕ src/til/ut_til/u8u16convertTests.cpp (+143 -0)
➕ src/tools/U8U16Test/PropertySheet.props (+16 -0)
➕ src/tools/U8U16Test/U8U16Test.cpp (+780 -0)
📝 src/tools/U8U16Test/U8U16Test.hpp (+44 -27)
➕ src/tools/U8U16Test/U8U16Test.vcxproj (+129 -0)
➕ src/tools/U8U16Test/U8U16Test.vcxproj.filters (+37 -0)
➕ src/tools/U8U16Test/_test.cmd (+6 -0)
➕ src/tools/U8U16Test/en.txt (+2 -0)
➕ src/tools/U8U16Test/fr.txt (+2 -0)
➕ src/tools/U8U16Test/main.cpp (+558 -0)
➕ src/tools/U8U16Test/packages.config (+4 -0)
➕ src/tools/U8U16Test/ru.txt (+2 -0)
➕ src/tools/U8U16Test/zh.txt (+2 -0)
➖ src/types/UTF8OutPipeReader.cpp (+0 -100)

...and 4 more files

📄 Description

Summary of the Pull Request

PR Checklist

Detailed Description of the Pull Request / Additional comments

On my list:

  1. ✔ Implement UTF-8 <--> UTF-16 conversion in user mode (this PR)
    1.1. ✔ Transpose my U8ToU16() and U16ToU8() C --> C++ (obsolet)
    1.2. ✔ Implement functors for partials handling
    1.3. ✔ Implement functors to do both the partials handling and the conversion task at once
    1.4. ✔ Supersede Utf8OutPipeReader and remove it from the code base to avoid further use
  2. ❌ Unify UTF-8 handling (supersede Utf8ToWideCharParser)
    2.1. ❌ Update VtInputThread::_HandleRunInput()
    2.2. ❌ Update ApiRoutines::WriteConsoleAImpl()
    2.3. ❌ (optional / ask the core team) Remove Utf8ToWideCharParser from the code base to avoid further use
  3. ❌ Enable BOM discarding
    3.1. ❌ Implement an enum class containing flags for U8ToU16() and U16ToU8() to enable discarding both BOM and/or invalids
    3.2. ❌ Replace the 3rd parameter of U8ToU16(), U16ToU8(), and related functors with the enum and update the function code accordingly
    3.3. ❌ Make use of the 3rd parameter to discard the BOM in all current functor callers, or (optional / ask the core team) make it the default for U8ToU16() and U16ToU8()
  4. ❌ Find UTF-16 to UTF-8 conversions and examine if they can be unified, too

Validation Steps Performed

  • Unit tests implemented.
  • Loads of manual tests to evaluate the behavior of the implemented code.

🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.

## 📋 Pull Request Information **Original PR:** https://github.com/microsoft/terminal/pull/4093 **Author:** [@german-one](https://github.com/german-one) **Created:** 12/31/2019 **Status:** ✅ Merged **Merged:** 1/30/2020 **Merged by:** [@DHowett-MSFT](https://github.com/DHowett-MSFT) **Base:** `master` ← **Head:** `master` --- ### 📝 Commits (10+) - [`99f1bbe`](https://github.com/microsoft/terminal/commit/99f1bbe168f7299a2cdc193f264b73ee4b20273a) Implement UTF-8 <--> UTF-16 conversion in user mode. - [`52cdbf4`](https://github.com/microsoft/terminal/commit/52cdbf43b3dc16d11f8b877e72f5676cf7b8cd63) formatting issues - [`b855a8f`](https://github.com/microsoft/terminal/commit/b855a8f8ec9378d916977fc5fe5117f6cd0d7d6c) still formatting issues - [`c5e8f9e`](https://github.com/microsoft/terminal/commit/c5e8f9ef32b9edfb557413fe509e653730df02c1) add Reset methods - [`7789fb1`](https://github.com/microsoft/terminal/commit/7789fb1e205b38ed6f208cf8c9f5168044a58fed) extend unit tests - [`3a6a757`](https://github.com/microsoft/terminal/commit/3a6a757f42b52c277b6e5d32a0dce85806f28f07) PR feedback for _OutputThread - [`6671dcc`](https://github.com/microsoft/terminal/commit/6671dcc7e72e56df14b57937eaf760d446bec6a6) PR feedback for Utf8Utf16Convert - [`b9e2e65`](https://github.com/microsoft/terminal/commit/b9e2e65aa8b39b1039841d3ac3cf88b236d01e9c) add U8U16Test to src\tools\ - [`dbfcd83`](https://github.com/microsoft/terminal/commit/dbfcd83474b886d3408fb34d14652b140f956c10) remove `shrink_to_fit()` - [`4f63dae`](https://github.com/microsoft/terminal/commit/4f63dae365093ca92e2043fb56cfea8195d022be) fix quirks in test loops ### 📊 Changes **24 files changed** (+2245 additions, -312 deletions) <details> <summary>View changed files</summary> 📝 `OpenConsole.sln` (+23 -0) 📝 `src/cascadia/TerminalConnection/ConptyConnection.cpp` (+25 -13) 📝 `src/cascadia/TerminalConnection/ConptyConnection.h` (+4 -0) 📝 `src/inc/til.h` (+1 -0) ➕ `src/inc/til/u8u16convert.h` (+458 -0) 📝 `src/til/ut_til/til.unit.tests.vcxproj` (+1 -0) ➕ `src/til/ut_til/u8u16convertTests.cpp` (+143 -0) ➕ `src/tools/U8U16Test/PropertySheet.props` (+16 -0) ➕ `src/tools/U8U16Test/U8U16Test.cpp` (+780 -0) 📝 `src/tools/U8U16Test/U8U16Test.hpp` (+44 -27) ➕ `src/tools/U8U16Test/U8U16Test.vcxproj` (+129 -0) ➕ `src/tools/U8U16Test/U8U16Test.vcxproj.filters` (+37 -0) ➕ `src/tools/U8U16Test/_test.cmd` (+6 -0) ➕ `src/tools/U8U16Test/en.txt` (+2 -0) ➕ `src/tools/U8U16Test/fr.txt` (+2 -0) ➕ `src/tools/U8U16Test/main.cpp` (+558 -0) ➕ `src/tools/U8U16Test/packages.config` (+4 -0) ➕ `src/tools/U8U16Test/ru.txt` (+2 -0) ➕ `src/tools/U8U16Test/zh.txt` (+2 -0) ➖ `src/types/UTF8OutPipeReader.cpp` (+0 -100) _...and 4 more files_ </details> ### 📄 Description <!-- Enter a brief description/summary of your PR here. What does it fix/what does it change/how was it tested (even manually, if necessary)? --> ## Summary of the Pull Request * Remove `UTF8OutputPipeReader`, move the pipe reading back to `ConptyConnection::_OutputThread()`. * Implement UTF-8 <--> UTF-16 conversion ~~in user mode. Enable to toggle between ignoring invalid UTF-8 and replacing it with U+FFFD.~~ See #3378 * Implement a re-usable partials handling. <!-- Please review the items on the PR checklist before submitting--> ## PR Checklist * [x] Closes #4092 * [x] CLA signed. If not, go over [here](https://cla.opensource.microsoft.com/microsoft/Terminal) and sign the CLA * [x] Tests added/passed * [ ] Requires documentation to be updated * [ ] I've discussed this with core contributors already. If not checked, I'm ready to accept this work might be rejected in favor of a different grand plan. Issue number where discussion took place: #xxx <!-- Provide a more detailed description of the PR, other things fixed or any additional comments/features here --> ## Detailed Description of the Pull Request / Additional comments On my list: 1. ✔ Implement UTF-8 <--> UTF-16 conversion ~~in user mode~~ (this PR) 1.1. ✔ ~~Transpose my U8ToU16() and U16ToU8() C --> C++~~ (obsolet) 1.2. ✔ Implement functors for partials handling 1.3. ✔ Implement functors to do both the partials handling and the conversion task at once 1.4. ✔ Supersede Utf8OutPipeReader and remove it from the code base to avoid further use 2. ❌ Unify UTF-8 handling (supersede Utf8ToWideCharParser) 2.1. ❌ Update VtInputThread::_HandleRunInput() 2.2. ❌ Update ApiRoutines::WriteConsoleAImpl() 2.3. ❌ (optional / ask the core team) Remove Utf8ToWideCharParser from the code base to avoid further use 3. ❌ Enable BOM discarding 3.1. ❌ Implement an `enum class` containing flags for U8ToU16() and U16ToU8() to enable discarding both BOM and/or invalids 3.2. ❌ Replace the 3rd parameter of U8ToU16(), U16ToU8(), and related functors with the enum and update the function code accordingly 3.3. ❌ Make use of the 3rd parameter to discard the BOM in all current functor callers, or (optional / ask the core team) make it the default for U8ToU16() and U16ToU8() 4. ❌ Find UTF-16 to UTF-8 conversions and examine if they can be unified, too <!-- Describe how you validated the behavior. Add automated tests wherever possible, but list manual validation steps taken as well --> ## Validation Steps Performed * Unit tests implemented. * Loads of manual tests to evaluate the behavior of the implemented code. --- <sub>🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.</sub>
claunia added the pull-request label 2026-01-31 09:10:44 +00:00
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Reference: starred/terminal#25631
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