37 lines
953 B
Zig
37 lines
953 B
Zig
const std = @import("std");
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const Allocator = std.mem.Allocator;
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pub const GamePak = struct {
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buf: []u8,
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alloc: Allocator,
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pub fn init(alloc: Allocator, path: []const u8) !@This() {
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const file = try std.fs.cwd().openFile(path, .{ .read = true });
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defer file.close();
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const len = try file.getEndPos();
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return @This(){
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.buf = try file.readToEndAlloc(alloc, len),
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.alloc = alloc,
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};
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}
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pub fn deinit(self: *@This()) void {
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self.alloc.free(self.buf);
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}
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pub inline fn get32(self: *const @This(), idx: usize) u32 {
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return (@as(u32, self.get16(idx + 2)) << 16) | @as(u32, self.get16(idx));
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}
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pub inline fn get16(self: *const @This(), idx: usize) u16 {
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return (@as(u16, self.buf[idx + 1]) << 8) | @as(u16, self.buf[idx]);
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}
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pub inline fn get8(self: *const @This(), idx: usize) u8 {
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return self.buf[idx];
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}
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};
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