#ifndef SV_INCLUDED
#define SV_INCLUDED

#include <stddef.h>
struct String_View {
    size_t len;
    const char *buf;
};
typedef struct String_View SV;

// Macros for String_View printf
#define SV_FMT "%.*s"
#define SV_ARG(sv) (int) (sv).len, (sv).buf

// Null String
#define SV_NULL sv_strn(NULL, 0)

extern struct String_View sv_str(const char *s);
extern struct String_View sv_strn(const char *s, size_t n);
extern struct String_View sv_trim_left(struct String_View sv);
extern struct String_View sv_trim_right(struct String_View sv);
extern struct String_View sv_trim(struct String_View sv);
extern int sv_eq(const struct String_View sv1, const struct String_View sv2);
extern int sv_casecmp( const struct String_View sv1, const struct String_View sv2);
extern struct String_View sv_before_delim(const struct String_View sv,
        const char *delims);
extern struct String_View sv_after_delim(const struct String_View sv,
        const char *delims);
extern struct String_View sv_str_str(const struct String_View haystack, 
        const struct String_View needle);
extern size_t sv_pack_size(const struct String_View sv);
extern void sv_pack(unsigned char *buf, const struct String_View sv);
extern struct String_View sv_unpack(unsigned char *buf);
#endif