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/* Copyright (C) 2025 Aryadev Chavali
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License Version 2 for
* details.
* You may distribute and modify this code under the terms of the GNU General
* Public License Version 2, which you should have received a copy of along with
* this program. If not, please go to <https://www.gnu.org/licenses/>.
* Created: 2025-04-14
* Description: String Views
*/
#ifndef SV_H
#define SV_H
#include <lib/arena.h>
typedef struct SV
{
u64 size;
char *data;
} sv_t;
#define SV(DATA, SIZE) ((const sv_t){.size = (SIZE), .data = (DATA)})
#define SV_FMT(SV) (int)(SV).size, (SV).data
#define PR_SV "%.*s"
sv_t sv_make(arena_t *allocator, const char *data, u64 size);
sv_t sv_copy(arena_t *allocator, sv_t sv);
sv_t sv_append(arena_t *allocator, sv_t sv, const char *data, u64 size);
sv_t sv_prepend(arena_t *allocator, sv_t sv, const char *data, u64 size);
/**
* @brief Concatenate two string views, returning that concatenation.
* Allocates memory.
*/
sv_t sv_concat(arena_t *allocator, sv_t a, sv_t b);
/**
* @brief Allocates a string view with the given `printf` format.
*/
sv_t sv_fmt(arena_t *allocator, char *fmt, ...);
/**
* @brief Constructs a new string view at a different offset. Does not allocate
* new memory.
*/
sv_t sv_substr(sv_t sv, u64 index, u64 size);
/**
* @brief Return a string view INDEX characters ahead (i.e. cut the string from
* the left).
*/
sv_t sv_cut(sv_t sv, u64 index);
/**
* @brief Return a string view with SIZE (i.e. chopping the string from the
* right)
*/
sv_t sv_chop(sv_t sv, u64 size);
i64 sv_find_substr(const sv_t sv, const sv_t substr);
i64 sv_find_subcstr(const sv_t sv, const char *substr, u64 size);
i64 sv_find_any(const sv_t sv, const char *bag);
u64 sv_while(const sv_t sv, bool (*pred)(char));
u64 sv_till(const sv_t sv, bool (*pred)(char));
#endif
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