0xmisha / string.h

Recreating the standard string.h library.

Summary of string+ Project

In the string.h project, the aim was to create a custom implementation of the string.h library in the C programming language, enriching it with additional features.

Installation:

git clone https://github.com/0xmisha/string.h.git
cd string.h/src
make

Requirements:

• Gcc
• Make
• check.h (for tests)

Key Deliverables:

1. Standard string.h Functions: The core part of the project was to replicate the functionality found in the standard string.h library. Functions such as memchr, memcpy, strncpy, and strtok are a few to mention.

2. sprintf and sscanf Functions: The standard sprintf and sscanf functions, which deal with formatted input and output to and from strings, were also to be implemented.

3. Special String Processing Functions: Inspired by the String class in C#, the project also required the addition of some advanced string manipulations. These functions, like to_upper, to_lower, insert, and trim, augment the traditional string processing capabilities.

4. Quality Assurance Measures:

   • Adherence to the Google coding style was mandated.
   • The entire codebase, encompassing headers, the library, and even the Makefile, was to reside in the src folder on the develop branch.
   • The project had a strong emphasis on structured programming, mandating minimal code repetition.
   • Unit-testing, with at least 80% coverage per function, was enforced, using the Check library.
   • A gcov report in the form of an HTML page was to be generated to validate the coverage.

5. Compliance and Restrictions:

   • The C11 standard was to be followed throughout, utilizing the gcc compiler.
   • Direct copying from the standard string.h or other string processing libraries was strictly prohibited, barring unit tests.
   • Functions were supposed to work specifically with single-byte ASCII characters.

6. Bonus Tasks: For additional credit, participants could implement advanced format modifiers for sprintf and sscanf, and further special string processing functions from the C# String class.

In essence, the s21_string+ project is a comprehensive endeavor to understand, reimplement, and expand upon the classic string.h library. The meticulous requirements ensure not just functional accuracy, but also coding best practices and rigorous testing.