Laria Carolin Chabowski
b7c88635d9
The callback and the opaque data are now grouped together in a struct instead of being passed individually into the tokenizer. This also exposes the string source reader struct and therefore removes the need of heap allocating it. Neat!
38 lines
881 B
C
38 lines
881 B
C
#include <assert.h>
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#include <string.h>
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#include "apfl.h"
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static bool
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reader_callback(void *opaque, char *buf, size_t *len, bool need)
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{
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(void)need;
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struct apfl_string_source_reader_data *ctx = opaque;
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size_t maxlen = *len;
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size_t remain_len = ctx->sv.len - ctx->off;
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*len = maxlen < remain_len ? maxlen : remain_len;
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memcpy(buf, ctx->sv.bytes + ctx->off, *len);
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ctx->off += *len;
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assert(ctx->off <= ctx->sv.len);
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return true;
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}
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struct apfl_string_source_reader_data
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apfl_string_source_reader_create(struct apfl_string_view sv)
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{
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return (struct apfl_string_source_reader_data) {
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.sv = sv,
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.off = 0,
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};
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}
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struct apfl_source_reader apfl_string_source_reader(struct apfl_string_source_reader_data *data)
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{
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return (struct apfl_source_reader) {
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.callback = reader_callback,
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.opaque = data,
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};
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}
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