#ifndef __SCC_SSTREAM_H__
#define __SCC_SSTREAM_H__

#include "scc_pos.h"
#include <scc_core.h>
#include <scc_core_ring.h>

typedef struct {
    scc_pos_t pos;
    int character;
} scc_sstream_char_t;

typedef SCC_RING(scc_sstream_char_t) scc_sstream_ring_t;

typedef struct {
    const char *fname;
    scc_pos_t pos;      // 当前消费位置 (可选，可由 ring 推导)
    int used;           // 是否仍然在使用
    int owned_src;      // 是否拥有src内存 即是否需要释放
    const char *src;    // 文件内容缓冲区 (由 sstream 管理)
    usize len;          // 缓冲区长度
    scc_pos_t fill_pos; // 内部填充位置
    scc_sstream_ring_t ring;
} scc_sstream_t;

int scc_sstream_init(scc_sstream_t *stream, const char *fname, int ring_size);
int scc_sstream_init_by_buffer(scc_sstream_t *stream, const char *buffer,
                               usize len, int owned, int ring_size);
scc_sstream_ring_t *scc_sstream_to_ring(scc_sstream_t *stream);
void scc_sstream_drop_ring(scc_sstream_ring_t *ring);
void scc_sstream_drop(scc_sstream_t *stream);

#endif /* __SCC_SSTREAM_H__ */