It Can Happen to You (another case of O(n^2) sscanf parsing)

• ChakraCore

  15 9,038 5.3 JavaScript

  ChakraCore is an open source Javascript engine with a C API.

  

It doesn't need to do that. Here is Microsoft's code. It does actually look a bit awkward, given how they're written it. But you could just use _cnt == -1 as a sentinel value to mean "read until null".

• uClibc

  1 3 0.0 C

  Discontinued uClibc

This implementation suggest a nuclear bomb exploded: https://github.com/ffainelli/uClibc/blob/master/libc/stdio/_scanf.c.

• SurveyJS

  surveyjs.io featured

  Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.

  

• mlibc

  4 771 9.6 C

  Portable C standard library

  

You don't, here is a (not entirely complete) scanf implementation that doesn't use strlen. Other libc implementations seem to use strlen to feed the input data to a FILE struct so they can reuse their fscanf.

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