Function try_replace_all

rust/stringzilla.rs:1662–1682

Tries to replace all non-overlapping occurrences of `needle` inside `buffer` in place. The algorithm mirrors the C++ `replace_all` logic: - equal-length replacements simply overwrite matches, - shorter replacements compact forward without allocating, - longer replacements count matches once, resize once, and rewrite from the back. Returns the number of replacements performed.

(buffer: &mut Vec<u8>, needle: &[u8], replacement: &[u8])

///
/// Returns the number of replacements performed.
pub fn try_replace_all(buffer: &mut Vec<u8>, needle: &[u8], replacement: &[u8]) -> Result<usize, Status> {
    replace_all_with_finder(
        buffer,
        needle.len(),
        replacement,
        |haystack, start| {
            if start >= haystack.len() {
                None
            } else {
                find(&haystack[start..], needle).map(|offset| start + offset)
            }
        },
        |haystack, end| {
            if end == 0 {
                None
            } else {
                rfind(&haystack[..end], needle)
            }
        },
    )
}

/// Tries to replace all non-overlapping bytes in `buffer` that belong to `byteset` with `replacement`.
///