gherkin: (C) Manually convert uri:s from char* to wchar_t*.

[brasmusson]

Summary

Manually convert uri:s from char* to wchar_t* to work around the deficient implementation of swprintf on Alpine Linux 3.5 running in Docker. Fixes #165.

Details

On Alpine Linux 3.5 running in Docker swprintf does not handle the format string L"%hs" properly and the written string becomes empty, therefore swprintf cannot be used to convert the uri:s passed as argument (as char*) to wide characters (wchar_t*). To work around this the uri:s are converted manually character by character, taking into account that the uri is utf8 coded (which only make a difference if the uri contains non-ascii characters).

How Has This Been Tested?

Tested on the Docker image, and on Ubuntu 16.04 (gcc and clang).

Types of changes

• Bug fix (non-breaking change which fixes an issue).
• New feature (non-breaking change which adds functionality).
• Breaking change (fix or feature that would cause existing functionality to not work as expected).

Checklist:

• Tested by the acceptance test (was: I've added tests for my code).
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[aslakhellesoy]

Awesome work @brasmusson! I had hoped this would fix #168 too, but it seems not. You think it's related?

[lock]

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