Zig String (A UTF-8 String Library)

This library is a UTF-8 compatible string library for the Zig programming language. I made this for the sole purpose to further my experience and understanding of zig. Also it may be useful for some people who need it (including myself), with future projects. Project is also open for people to add to and improve. Please check the issues to view requested features.

Basic Usage

const String = @import("./zig-string.zig").String;
// ...

// Use your favorite allocator
var arena = ArenaAllocator.init(std.heap.page_allocator);
defer arena.deinit();

// Create your String
var myString = String.init(arena.allocator());
defer myString.deinit();

// Use functions provided
try myString.concat("🔥 Hello!");
_ = myString.pop();
try myString.concat(", World 🔥");

// Success!
assert(myString.cmp("🔥 Hello, World 🔥"));

Installation

Add this to your build.zig.zon

.dependencies = .{
    .string = .{
        .url = "https://github.com/JakubSzark/zig-string/archive/refs/heads/master.tar.gz",
        //the correct hash will be suggested by zig
    }
}

And add this to you build.zig.zon

    const string = b.dependency("string", .{
        .target = target,
        .optimize = optimize,
    });
    exe.addModule("string", string.module("string"));

You can then import the library into your code like this

const String = @import("string").String;

Things needed

Optimizations
Multi-Language toUppercase & toLowercase
Better documentation
More Testing

How to Contribute

Fork
Clone
Add Features (Use Zig FMT)
Make a Test
Pull Request
Success!

Working Features

If there are any issues with complexity please open an issue (I'm no expert when it comes to complexity)

Function	Description
allocate	Sets the internal buffer size
capacity	Returns the capacity of the String
charAt	Returns character at index
clear	Clears the contents of the String
clone	Copies this string to a new one
cmp	Compares to string literal
concat	Appends a string literal to the end
deinit	De-allocates the String
find	Finds first string literal appearance
rfind	Finds last string literal appearance
init	Creates a String with an Allocator
init_with_contents	Creates a String with specified contents
insert	Inserts a character at an index
isEmpty	Checks if length is zero
iterator	Returns a StringIterator over the String
len	Returns count of characters stored
pop	Removes the last character
remove	Removes a character at an index
removeRange	Removes a range of characters
repeat	Repeats string n times
reverse	Reverses all the characters
split	Returns a slice based on delimiters
splitToString	Returns a String based on delimiters
str	Returns the String as a slice
substr	Creates a string from a range
toLowercase	Converts (ASCII) characters to lowercase
toOwned	Creates an owned slice of the String
toUppercase	Converts (ASCII) characters to uppercase
trim	Removes whitelist from both ends
trimEnd	Remove whitelist from the end
trimStart	Remove whitelist from the start
truncate	Realloc to the length
set_str	Set's buffer value from string literal
writer	Returns a std.io.Writer for the String
starts_with	Determines if the given string begins with the given value
ends_with	Determines if the given string ends with the given value
replace	Replace all occurrences of the search string with the replacement string

xfxpositions / zig-string