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