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#ifndef GU_OUT_H_
#define GU_OUT_H_
#include <gu/defs.h>
#include <gu/assert.h>
#include <gu/exn.h>
#include <gu/ucs.h>
typedef struct GuOut GuOut;
typedef struct GuOutStream GuOutStream;
struct GuOutStream {
uint8_t* (*begin_buf)(GuOutStream* self, size_t req, size_t* sz_out,
GuExn* err);
void (*end_buf)(GuOutStream* self, size_t span, GuExn* err);
size_t (*output)(GuOutStream* self, const uint8_t* buf, size_t size,
GuExn* err);
void (*flush)(GuOutStream* self, GuExn* err);
};
struct GuOut {
uint8_t* restrict buf_end;
ptrdiff_t buf_curr;
size_t buf_size;
GuOutStream* stream;
GuFinalizer fini;
};
GU_API_DECL GuOut*
gu_new_out(GuOutStream* stream, GuPool* pool);
inline bool
gu_out_is_buffered(GuOut* out)
{
return !!out->stream->begin_buf;
}
GU_API_DECL GuOut*
gu_new_buffered_out(GuOut* out, size_t buf_sz, GuPool* pool);
GU_API_DECL GuOut*
gu_out_buffered(GuOut* out, GuPool* pool);
GU_API_DECL uint8_t*
gu_out_begin_span(GuOut* out, size_t req, size_t* sz_out, GuExn* err);
GU_API_DECL uint8_t*
gu_out_force_span(GuOut* out, size_t min, size_t max, size_t* sz_out,
GuExn* err);
GU_API_DECL void
gu_out_end_span(GuOut* out, size_t sz);
GU_API_DECL size_t
gu_out_bytes_(GuOut* restrict out, const uint8_t* restrict src,
size_t len, GuExn* err);
inline bool
gu_out_try_buf_(GuOut* restrict out, const uint8_t* restrict src, size_t len)
{
gu_require(len <= PTRDIFF_MAX);
ptrdiff_t curr = out->buf_curr;
ptrdiff_t new_curr = curr + (ptrdiff_t) len;
if (GU_UNLIKELY(new_curr > 0)) {
return false;
}
memcpy(&out->buf_end[curr], src, len);
out->buf_curr = new_curr;
return true;
}
inline size_t
gu_out_bytes(GuOut* restrict out, const uint8_t* restrict src, size_t len,
GuExn* err)
{
if (GU_LIKELY(gu_out_try_buf_(out, src, len))) {
return len;
}
return gu_out_bytes_(out, src, len, err);
}
GU_API_DECL void
gu_out_flush(GuOut* out, GuExn* err);
inline bool
gu_out_try_u8_(GuOut* restrict out, uint8_t u)
{
ptrdiff_t curr = out->buf_curr;
ptrdiff_t new_curr = curr + 1;
if (GU_UNLIKELY(new_curr > 0)) {
return false;
}
out->buf_end[curr] = u;
out->buf_curr = new_curr;
return true;
}
inline void
gu_out_u8(GuOut* restrict out, uint8_t u, GuExn* err)
{
if (GU_UNLIKELY(!gu_out_try_u8_(out, u))) {
GU_API_DECL void gu_out_u8_(GuOut* restrict out, uint8_t u,
GuExn* err);
gu_out_u8_(out, u, err);
}
}
inline void
gu_out_s8(GuOut* restrict out, int8_t i, GuExn* err)
{
gu_out_u8(out, (uint8_t) i, err);
}
GU_API_DECL void
gu_out_u16le(GuOut* out, uint16_t u, GuExn* err);
GU_API_DECL void
gu_out_u16be(GuOut* out, uint16_t u, GuExn* err);
GU_API_DECL void
gu_out_s16le(GuOut* out, int16_t u, GuExn* err);
GU_API_DECL void
gu_out_s16be(GuOut* out, int16_t u, GuExn* err);
GU_API_DECL void
gu_out_u32le(GuOut* out, uint32_t u, GuExn* err);
GU_API_DECL void
gu_out_u32be(GuOut* out, uint32_t u, GuExn* err);
GU_API_DECL void
gu_out_s32le(GuOut* out, int32_t u, GuExn* err);
GU_API_DECL void
gu_out_s32be(GuOut* out, int32_t u, GuExn* err);
GU_API_DECL void
gu_out_u64le(GuOut* out, uint64_t u, GuExn* err);
GU_API_DECL void
gu_out_u64be(GuOut* out, uint64_t u, GuExn* err);
GU_API_DECL void
gu_out_s64le(GuOut* out, int64_t u, GuExn* err);
GU_API_DECL void
gu_out_s64be(GuOut* out, int64_t u, GuExn* err);
GU_API_DECL void
gu_out_f64le(GuOut* out, double d, GuExn* err);
GU_API_DECL void
gu_out_f64be(GuOut* out, double d, GuExn* err);
inline void
gu_putc(char c, GuOut* out, GuExn* err)
{
GuUCS ucs = gu_char_ucs(c);
gu_out_u8(out, (uint8_t) ucs, err);
}
GU_API_DECL void
gu_puts(const char* str, GuOut* out, GuExn* err);
GU_API_DECL void
gu_vprintf(const char* fmt, va_list args, GuOut* out, GuExn* err);
GU_API_DECL void
gu_printf(GuOut* out, GuExn* err, const char* fmt, ...);
#endif // GU_OUT_H_
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