Caleb J. Gardner
32 lines
996 B
Zig
32 lines
996 B
Zig
const std = @import("std");
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pub const StatelessDecomp = *const fn (std.mem.Allocator, in: []u8, out: []u8) Error!usize;
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pub const Error = error{
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OutOfMemory,
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EndOfStream,
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ReadFailed,
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WriteFailed,
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};
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const Decompressor = @This();
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alloc: std.mem.Allocator = std.heap.smp_allocator,
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vtable: *const struct {
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decompress: *const fn (*const Decompressor, in: []u8, out: []u8) Error!usize = defaultDecompress,
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stateless: StatelessDecomp,
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},
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/// Create a copy of the decompressor using it's stateless function and the new allocator.
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pub fn statelessCopy(self: Decompressor, alloc: std.mem.Allocator) Decompressor {
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return &.{ .alloc = alloc, .vtable = &.{ .stateless = self.vtable.stateless } };
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}
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pub fn decompress(self: *const Decompressor, in: []u8, out: []u8) Error!usize {
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return self.vtable.decompress(self, in, out);
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}
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fn defaultDecompress(self: *const Decompressor, in: []u8, out: []u8) Error!usize {
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return self.vtable.stateless(self.alloc, in, out);
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}
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