Zig 0.17.0-dev (Split by item)

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replace

Replace needle with replacement as many times as possible, writing to an output buffer which is assumed to be of appropriate size. Use replacementSize to calculate an appropriate buffer size. The input and output slices must not overlap. The needle must not be empty. Returns the number of replacements made.

mem.replace

pub fn replace(comptime T: type, input: []const T, needle: []const T, replacement: []const T, output: []T) usize

File

lib/std/mem.zig:4062

Code

pub fn replace(comptime T: type, input: []const T, needle: []const T, replacement: []const T, output: []T) usize {
    // Empty needle will loop until output buffer overflows.
    assert(needle.len > 0);

    var i: usize = 0;
    var slide: usize = 0;
    var replacements: usize = 0;
    while (slide < input.len) {
        if (mem.startsWith(T, input[slide..], needle)) {
            @memcpy(output[i..][0..replacement.len], replacement);
            i += replacement.len;
            slide += needle.len;
            replacements += 1;
        } else {
            output[i] = input[slide];
            i += 1;
            slide += 1;
        }
    }

    return replacements;
}