tiny.choir.backends.artifact.model.slice

1pub const slice = @import("slice.zig");

1const std = @import("std");23pub const Error = std.mem.Allocator.Error;45pub fn dupeOptional(allocator: std.mem.Allocator, value: ?[]const u8) Error!?[]const u8 {6    return if (value) |actual| try dupe(allocator, actual) else null;7}89pub fn freeOptional(allocator: std.mem.Allocator, value: ?[]const u8) void {10    if (value) |actual| free(allocator, actual);11}1213pub fn dupe(allocator: std.mem.Allocator, value: []const u8) Error![]const u8 {14    return try allocator.dupe(u8, value);15}1617pub fn free(allocator: std.mem.Allocator, value: []const u8) void {18    allocator.free(@constCast(value));19}2021pub fn dupeList(allocator: std.mem.Allocator, values: []const []const u8) Error![]const []const u8 {22    if (values.len == 0) return &.{};2324    const out = try allocator.alloc([]const u8, values.len);25    var filled: usize = 0;26    errdefer {27        for (out[0..filled]) |item| free(allocator, item);28        allocator.free(out);29    }3031    for (values, 0..) |value, index| {32        out[index] = try dupe(allocator, value);33        filled += 1;34    }35    return out;36}3738pub fn freeList(allocator: std.mem.Allocator, values: []const []const u8) void {39    for (values) |value| free(allocator, value);40    if (values.len > 0) allocator.free(@constCast(values));41}4243pub fn optionalEqual(left: ?[]const u8, right: ?[]const u8) bool {44    if (left == null or right == null) return left == null and right == null;45    return std.mem.eql(u8, left.?, right.?);46}