139 lines
5.6 KiB
C
139 lines
5.6 KiB
C
// vim:fileencoding=utf-8:foldmethod=marker
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#ifndef STR8_H
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#define STR8_H
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#include "../../../common/aliases/aliases.h"
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#include "../../../common/assert/assert.h"
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#include "../../../common/platform/platform.h"
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#include "../../../primitives/dbl_list/dbl_list.h"
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#include "../../mem_allocator/mem_allocator.h"
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#include <string.h>
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#include <stdbool.h>
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#ifdef WAPP_PLATFORM_CPP
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BEGIN_C_LINKAGE
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#endif // !WAPP_PLATFORM_CPP
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typedef struct str8 Str8;
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struct str8 {
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u64 capacity;
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u64 size;
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c8 *buf;
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};
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typedef const Str8 Str8RO;
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/**
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* Utilities to be used with printf functions
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*/
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#define WAPP_STR8_SPEC "%.*s"
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#define wapp_str8_varg(STRING) (int)((STRING).size), (STRING).buf
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/**
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* Str8 stack buffers
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*/
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#ifdef WAPP_PLATFORM_CPP
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// Uses a lambda to achieve the same behaviour achieved by the C macro
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#define wapp_str8_buf(CAPACITY) ([&](){ \
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persistent c8 buf[CAPACITY] = {}; \
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memset(buf, 0, CAPACITY); \
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return Str8{CAPACITY, 0, buf}; \
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}())
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// Uses a lambda to achieve the same behaviour achieved by the C macro
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#define wapp_str8_lit(STRING) ([&]() { \
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persistent c8 buf[sizeof(STRING) * 2] = {}; \
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memcpy(buf, STRING, sizeof(STRING)); \
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return Str8{(sizeof(STRING) - 1) * 2, sizeof(STRING) - 1, buf}; \
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}())
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#define wapp_str8_lit_ro(STRING) Str8RO{sizeof(STRING) - 1, sizeof(STRING) - 1, (c8 *)STRING}
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#define wapp_str8_lit_ro_initialiser_list(STRING) {sizeof(STRING) - 1, sizeof(STRING) - 1, (c8 *)STRING}
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#else
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#define wapp_str8_buf(CAPACITY) ((Str8){.capacity = CAPACITY, .size = 0, .buf = (c8[CAPACITY]){0}})
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// Utilises the fact that memcpy returns pointer to dest buffer and that getting
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// address of compound literals is valid in C to create a string on the stack
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#define wapp_str8_lit(STRING) ((Str8){.capacity = (sizeof(STRING) - 1) * 2, \
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.size = sizeof(STRING) - 1, \
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.buf = memcpy(&((c8 [sizeof(STRING) * 2]){0}), STRING, sizeof(STRING))})
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#define wapp_str8_lit_ro(STRING) ((Str8RO){.capacity = sizeof(STRING) - 1, \
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.size = sizeof(STRING) - 1, \
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.buf = (c8 *)STRING})
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// To be used only when initialising a static storage variable in compilers that don't support
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// initialisers with the syntax of wapp_str8_lit_ro (e.g. gcc). Should only be used when necessary
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// and only be assigned to a Str8RO variable to avoid any attempt at modifying the string
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#define wapp_str8_lit_ro_initialiser_list(STRING) {.capacity = sizeof(STRING) - 1, \
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.size = sizeof(STRING) - 1, \
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.buf = (c8 *)STRING}
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#endif // !WAPP_PLATFORM_CPP
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/**
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* Str8 allocated buffers
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*/
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Str8 *wapp_str8_alloc_buf(const Allocator *allocator, u64 capacity);
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Str8 *wapp_str8_alloc_and_fill_buf(const Allocator *allocator, u64 capacity);
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Str8 *wapp_str8_alloc_cstr(const Allocator *allocator, const char *str);
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Str8 *wapp_str8_alloc_str8(const Allocator *allocator, Str8RO *str);
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Str8 *wapp_str8_alloc_substr(const Allocator *allocator, Str8RO *str, u64 start, u64 end);
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Str8 *wapp_str8_alloc_concat(const Allocator *allocator, Str8 *dst, Str8RO *src);
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// Only needed for allocators like malloc where each allocation has to be freed on its own.
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// No need to use it for allocators like Arena.
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void wapp_str8_dealloc_buf(const Allocator *allocator, Str8 **str);
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/**
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* Str8 utilities
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*/
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c8 wapp_str8_get(Str8RO *str, u64 index);
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void wapp_str8_set(Str8 *str, u64 index, c8 c);
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void wapp_str8_push_back(Str8 *str, c8 c);
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bool wapp_str8_equal(Str8RO *s1, Str8RO *s2);
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bool wapp_str8_equal_to_count(Str8RO* s1, Str8RO* s2, u64 count);
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Str8 wapp_str8_slice(Str8RO *str, u64 start, u64 end);
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void wapp_str8_concat_capped(Str8 *dst, Str8RO *src);
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void wapp_str8_copy_cstr_capped(Str8 *dst, const char *src);
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void wapp_str8_copy_str8_capped(Str8 *dst, Str8RO *src);
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void wapp_str8_copy_to_cstr(char *dst, Str8RO *src, u64 dst_capacity);
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void wapp_str8_format(Str8 *dst, const char *format, ...);
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/**
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* Str8 find functions
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*/
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i64 wapp_str8_find(Str8RO *str, Str8RO substr);
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i64 wapp_str8_rfind(Str8RO *str, Str8RO substr);
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/**
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* Str8 split and join
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*/
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#define wapp_str8_split(ALLOCATOR, STR, DELIMITER) wapp_str8_split_with_max(ALLOCATOR, STR, DELIMITER, -1)
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#define wapp_str8_rsplit(ALLOCATOR, STR, DELIMITER) wapp_str8_rsplit_with_max(ALLOCATOR, STR, DELIMITER, -1)
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Str8List *wapp_str8_split_with_max(const Allocator *allocator, Str8RO *str, Str8RO *delimiter, i64 max_splits);
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Str8List *wapp_str8_rsplit_with_max(const Allocator *allocator, Str8RO *str, Str8RO *delimiter, i64 max_splits);
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Str8 *wapp_str8_join(const Allocator *allocator, const Str8List *list, Str8RO *delimiter);
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/**
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* Str8 list utilities
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*/
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#ifdef WAPP_PLATFORM_CPP
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#define wapp_str8_node_from_cstr(STRING) wapp_str8_list_node([&]() { \
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persistent Str8 str = wapp_str8_lit(STRING); \
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return &str; \
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}())
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#define wapp_str8_node_from_str8(STRING) wapp_str8_list_node([&]() { \
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persistent Str8 str = STRING; \
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return &str; \
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}())
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#else
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#define wapp_str8_node_from_cstr(STRING) wapp_str8_list_node(&wapp_str8_lit(STRING))
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#define wapp_str8_node_from_str8(STRING) wapp_str8_list_node(&(STRING))
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#endif // !WAPP_PLATFORM_CPP
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u64 wapp_str8_list_total_size(const Str8List *list);
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#ifdef WAPP_PLATFORM_CPP
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END_C_LINKAGE
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#endif // !WAPP_PLATFORM_CPP
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#endif // !STR8_H
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