45 lines
915 B
Text
45 lines
915 B
Text
Buffer :: struct {
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allocator: Allocator;
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data: [..]u8;
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count: int;
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}
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append :: inline (buf: *Buffer, ptr: *void, count: int) {
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free_space := ensure_buffer_has_room(buf, count);
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memcpy(free_space, ptr, count);
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buf.count += count;
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}
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append :: inline (buf: *Buffer, data: []u8) {
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append(buf, data.data, data.count);
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}
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append :: inline (buf: *Buffer, ptr: *$T) {
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append(buf, ptr, size_of(T));
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}
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reset :: inline (buf: *Buffer) {
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buf.count = 0;
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}
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#scope_file;
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array :: #import "jc/array";
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ensure_buffer_has_room :: (buf: *Buffer, count: int) -> *u8 {
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ptr := buf.data.data + buf.count;
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if buf.count + count >= buf.data.allocated {
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array.resize(*buf.data, buf.data.allocated * 2);
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ptr = buf.data.data + buf.count;
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buf.data.count = buf.data.allocated;
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}
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return ptr;
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}
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#if RUN_TESTS #run {
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test.run("basic operations", t => {
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buf: Buffer;
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});
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}
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