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Diffstat (limited to 'js/src/zydis/Zycore/String.h')
| -rw-r--r-- | js/src/zydis/Zycore/String.h | 1011 |
1 files changed, 1011 insertions, 0 deletions
diff --git a/js/src/zydis/Zycore/String.h b/js/src/zydis/Zycore/String.h new file mode 100644 index 0000000000..f25ad7e94c --- /dev/null +++ b/js/src/zydis/Zycore/String.h @@ -0,0 +1,1011 @@ +/*************************************************************************************************** + + Zyan Core Library (Zycore-C) + + Original Author : Florian Bernd + + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all + * copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + +***************************************************************************************************/ + +/** + * @file + * Implements a string type. + */ + +#ifndef ZYCORE_STRING_H +#define ZYCORE_STRING_H + +#include "zydis/Zycore/Allocator.h" +#include "zydis/Zycore/Status.h" +#include "zydis/Zycore/Types.h" +#include "zydis/Zycore/Vector.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* ============================================================================================== */ +/* Constants */ +/* ============================================================================================== */ + +/** + * The initial minimum capacity (number of characters) for all dynamically allocated + * string instances - not including the terminating '\0'-character. + */ +#define ZYAN_STRING_MIN_CAPACITY 32 + +/** + * The default growth factor for all string instances. + */ +#define ZYAN_STRING_DEFAULT_GROWTH_FACTOR 2 + +/** + * The default shrink threshold for all string instances. + */ +#define ZYAN_STRING_DEFAULT_SHRINK_THRESHOLD 4 + +/* ============================================================================================== */ +/* Enums and types */ +/* ============================================================================================== */ + +/* ---------------------------------------------------------------------------------------------- */ +/* String flags */ +/* ---------------------------------------------------------------------------------------------- */ + +/** + * Defines the `ZyanStringFlags` data-type. + */ +typedef ZyanU8 ZyanStringFlags; + +/** + * The string uses a custom user-defined buffer with a fixed capacity. + */ +#define ZYAN_STRING_HAS_FIXED_CAPACITY 0x01 // (1 << 0) + +/* ---------------------------------------------------------------------------------------------- */ +/* String */ +/* ---------------------------------------------------------------------------------------------- */ + +/** + * Defines the `ZyanString` struct. + * + * The `ZyanString` type is implemented as a size-prefixed string - which allows for a lot of + * performance optimizations. + * Nevertheless null-termination is guaranteed at all times to provide maximum compatibility with + * default C-style strings (use `ZyanStringGetData` to access the C-style string). + * + * All fields in this struct should be considered as "private". Any changes may lead to unexpected + * behavior. + */ +typedef struct ZyanString_ +{ + /** + * String flags. + */ + ZyanStringFlags flags; + /** + * The vector that contains the actual string. + */ + ZyanVector vector; +} ZyanString; + +/* ---------------------------------------------------------------------------------------------- */ +/* View */ +/* ---------------------------------------------------------------------------------------------- */ + +/** + * Defines the `ZyanStringView` struct. + * + * The `ZyanStringView` type provides a view inside a string (`ZyanString` instances, null- + * terminated C-style strings, or even not-null-terminated custom strings). A view is immutable + * by design and can't be directly converted to a C-style string. + * + * Views might become invalid (e.g. pointing to invalid memory), if the underlying string gets + * destroyed or resized. + * + * The `ZYAN_STRING_TO_VIEW` macro can be used to cast a `ZyanString` to a `ZyanStringView` pointer + * without any runtime overhead. + * Casting a view to a normal string is not supported and will lead to unexpected behavior (use + * `ZyanStringDuplicate` to create a deep-copy instead). + * + * All fields in this struct should be considered as "private". Any changes may lead to unexpected + * behavior. + */ +typedef struct ZyanStringView_ +{ + /** + * The string data. + * + * The view internally re-uses the normal string struct to allow casts without any runtime + * overhead. + */ + ZyanString string; +} ZyanStringView; + +/* ---------------------------------------------------------------------------------------------- */ + +/* ============================================================================================== */ +/* Macros */ +/* ============================================================================================== */ + +/* ---------------------------------------------------------------------------------------------- */ +/* General */ +/* ---------------------------------------------------------------------------------------------- */ + +/** + * Defines an uninitialized `ZyanString` instance. + */ +#define ZYAN_STRING_INITIALIZER \ + { \ + /* flags */ 0, \ + /* vector */ ZYAN_VECTOR_INITIALIZER \ + } + +/* ---------------------------------------------------------------------------------------------- */ +/* Helper macros */ +/* ---------------------------------------------------------------------------------------------- */ + +/** + * Casts a `ZyanString` pointer to a constant `ZyanStringView` pointer. + */ +#define ZYAN_STRING_TO_VIEW(string) (const ZyanStringView*)(string) + +/** + * Defines a `ZyanStringView` struct that provides a view into a static C-style string. + * + * @param string The C-style string. + */ +#define ZYAN_DEFINE_STRING_VIEW(string) \ + { \ + /* string */ \ + { \ + /* flags */ 0, \ + /* vector */ \ + { \ + /* allocator */ ZYAN_NULL, \ + /* growth_factor */ 1, \ + /* shrink_threshold */ 0, \ + /* size */ sizeof(string), \ + /* capacity */ sizeof(string), \ + /* element_size */ sizeof(char), \ + /* destructor */ ZYAN_NULL, \ + /* data */ (char*)(string) \ + } \ + } \ + } + +/* ---------------------------------------------------------------------------------------------- */ + +/* ============================================================================================== */ +/* Exported functions */ +/* ============================================================================================== */ + +/* ---------------------------------------------------------------------------------------------- */ +/* Constructor and destructor */ +/* ---------------------------------------------------------------------------------------------- */ + +#ifndef ZYAN_NO_LIBC + +/** + * Initializes the given `ZyanString` instance. + * + * @param string A pointer to the `ZyanString` instance. + * @param capacity The initial capacity (number of characters). + * + * @return A zyan status code. + * + * The memory for the string is dynamically allocated by the default allocator using the default + * growth factor and the default shrink threshold. + * + * The allocated buffer will be at least one character larger than the given `capacity`, to reserve + * space for the terminating '\0'. + * + * Finalization with `ZyanStringDestroy` is required for all strings created by this function. + */ +ZYCORE_EXPORT ZYAN_REQUIRES_LIBC ZyanStatus ZyanStringInit(ZyanString* string, ZyanUSize capacity); + +#endif // ZYAN_NO_LIBC + +/** + * Initializes the given `ZyanString` instance and sets a custom `allocator` and memory + * allocation/deallocation parameters. + * + * @param string A pointer to the `ZyanString` instance. + * @param capacity The initial capacity (number of characters). + * @param allocator A pointer to a `ZyanAllocator` instance. + * @param growth_factor The growth factor. + * @param shrink_threshold The shrink threshold. + * + * @return A zyan status code. + * + * A growth factor of `1` disables overallocation and a shrink threshold of `0` disables + * dynamic shrinking. + * + * The allocated buffer will be at least one character larger than the given `capacity`, to reserve + * space for the terminating '\0'. + * + * Finalization with `ZyanStringDestroy` is required for all strings created by this function. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringInitEx(ZyanString* string, ZyanUSize capacity, + ZyanAllocator* allocator, ZyanU8 growth_factor, ZyanU8 shrink_threshold); + +/** + * Initializes the given `ZyanString` instance and configures it to use a custom user + * defined buffer with a fixed size. + * + * @param string A pointer to the `ZyanString` instance. + * @param buffer A pointer to the buffer that is used as storage for the string. + * @param capacity The maximum capacity (number of characters) of the buffer, including + * the terminating '\0'. + * + * @return A zyan status code. + * + * Finalization is not required for strings created by this function. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringInitCustomBuffer(ZyanString* string, char* buffer, + ZyanUSize capacity); + +/** + * Destroys the given `ZyanString` instance. + * + * @param string A pointer to the `ZyanString` instance. + * + * @return A zyan status code. + * + */ +ZYCORE_EXPORT ZyanStatus ZyanStringDestroy(ZyanString* string); + +/* ---------------------------------------------------------------------------------------------- */ +/* Duplication */ +/* ---------------------------------------------------------------------------------------------- */ + +#ifndef ZYAN_NO_LIBC + +/** + * Initializes a new `ZyanString` instance by duplicating an existing string. + * + * @param destination A pointer to the (uninitialized) destination `ZyanString` instance. + * @param source A pointer to the source string. + * @param capacity The initial capacity (number of characters). + * + * This value is automatically adjusted to the size of the source string, if + * a smaller value was passed. + * + * @return A zyan status code. + * + * The behavior of this function is undefined, if `source` is a view into the `destination` + * string or `destination` points to an already initialized `ZyanString` instance. + * + * The memory for the string is dynamically allocated by the default allocator using the default + * growth factor and the default shrink threshold. + * + * The allocated buffer will be at least one character larger than the given `capacity`, to reserve + * space for the terminating '\0'. + * + * Finalization with `ZyanStringDestroy` is required for all strings created by this function. + */ +ZYCORE_EXPORT ZYAN_REQUIRES_LIBC ZyanStatus ZyanStringDuplicate(ZyanString* destination, + const ZyanStringView* source, ZyanUSize capacity); + +#endif // ZYAN_NO_LIBC + +/** + * Initializes a new `ZyanString` instance by duplicating an existing string and sets a + * custom `allocator` and memory allocation/deallocation parameters. + * + * @param destination A pointer to the (uninitialized) destination `ZyanString` instance. + * @param source A pointer to the source string. + * @param capacity The initial capacity (number of characters). + + * This value is automatically adjusted to the size of the source + * string, if a smaller value was passed. + * @param allocator A pointer to a `ZyanAllocator` instance. + * @param growth_factor The growth factor. + * @param shrink_threshold The shrink threshold. + * + * @return A zyan status code. + * + * The behavior of this function is undefined, if `source` is a view into the `destination` + * string or `destination` points to an already initialized `ZyanString` instance. + * + * A growth factor of `1` disables overallocation and a shrink threshold of `0` disables + * dynamic shrinking. + * + * The allocated buffer will be at least one character larger than the given `capacity`, to reserve + * space for the terminating '\0'. + * + * Finalization with `ZyanStringDestroy` is required for all strings created by this function. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringDuplicateEx(ZyanString* destination, + const ZyanStringView* source, ZyanUSize capacity, ZyanAllocator* allocator, + ZyanU8 growth_factor, ZyanU8 shrink_threshold); + +/** + * Initializes a new `ZyanString` instance by duplicating an existing string and + * configures it to use a custom user defined buffer with a fixed size. + * + * @param destination A pointer to the (uninitialized) destination `ZyanString` instance. + * @param source A pointer to the source string. + * @param buffer A pointer to the buffer that is used as storage for the string. + * @param capacity The maximum capacity (number of characters) of the buffer, including the + * terminating '\0'. + + * This function will fail, if the capacity of the buffer is less or equal to + * the size of the source string. + * + * @return A zyan status code. + * + * The behavior of this function is undefined, if `source` is a view into the `destination` + * string or `destination` points to an already initialized `ZyanString` instance. + * + * Finalization is not required for strings created by this function. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringDuplicateCustomBuffer(ZyanString* destination, + const ZyanStringView* source, char* buffer, ZyanUSize capacity); + +/* ---------------------------------------------------------------------------------------------- */ +/* Concatenation */ +/* ---------------------------------------------------------------------------------------------- */ + +#ifndef ZYAN_NO_LIBC + +/** + * Initializes a new `ZyanString` instance by concatenating two existing strings. + * + * @param destination A pointer to the (uninitialized) destination `ZyanString` instance. + * + * This function will fail, if the destination `ZyanString` instance equals + * one of the source strings. + * @param s1 A pointer to the first source string. + * @param s2 A pointer to the second source string. + * @param capacity The initial capacity (number of characters). + + * This value is automatically adjusted to the combined size of the source + * strings, if a smaller value was passed. + * + * @return A zyan status code. + * + * The behavior of this function is undefined, if `s1` or `s2` are views into the `destination` + * string or `destination` points to an already initialized `ZyanString` instance. + * + * The memory for the string is dynamically allocated by the default allocator using the default + * growth factor and the default shrink threshold. + * + * The allocated buffer will be at least one character larger than the given `capacity`, to reserve + * space for the terminating '\0'. + * + * Finalization with `ZyanStringDestroy` is required for all strings created by this function. + */ +ZYCORE_EXPORT ZYAN_REQUIRES_LIBC ZyanStatus ZyanStringConcat(ZyanString* destination, + const ZyanStringView* s1, const ZyanStringView* s2, ZyanUSize capacity); + +#endif // ZYAN_NO_LIBC + +/** + * Initializes a new `ZyanString` instance by concatenating two existing strings and sets + * a custom `allocator` and memory allocation/deallocation parameters. + * + * @param destination A pointer to the (uninitialized) destination `ZyanString` instance. + * + * This function will fail, if the destination `ZyanString` instance + * equals one of the source strings. + * @param s1 A pointer to the first source string. + * @param s2 A pointer to the second source string. + * @param capacity The initial capacity (number of characters). + * + * This value is automatically adjusted to the combined size of the + * source strings, if a smaller value was passed. + * @param allocator A pointer to a `ZyanAllocator` instance. + * @param growth_factor The growth factor. + * @param shrink_threshold The shrink threshold. + * + * @return A zyan status code. + * + * The behavior of this function is undefined, if `s1` or `s2` are views into the `destination` + * string or `destination` points to an already initialized `ZyanString` instance. + * + * A growth factor of `1` disables overallocation and a shrink threshold of `0` disables + * dynamic shrinking. + * + * The allocated buffer will be at least one character larger than the given `capacity`, to reserve + * space for the terminating '\0'. + * + * Finalization with `ZyanStringDestroy` is required for all strings created by this function. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringConcatEx(ZyanString* destination, const ZyanStringView* s1, + const ZyanStringView* s2, ZyanUSize capacity, ZyanAllocator* allocator, ZyanU8 growth_factor, + ZyanU8 shrink_threshold); + +/** + * Initializes a new `ZyanString` instance by concatenating two existing strings and + * configures it to use a custom user defined buffer with a fixed size. + * + * @param destination A pointer to the (uninitialized) destination `ZyanString` instance. + * + * This function will fail, if the destination `ZyanString` instance equals + * one of the source strings. + * @param s1 A pointer to the first source string. + * @param s2 A pointer to the second source string. + * @param buffer A pointer to the buffer that is used as storage for the string. + * @param capacity The maximum capacity (number of characters) of the buffer. + * + * This function will fail, if the capacity of the buffer is less or equal to + * the combined size of the source strings. + * + * @return A zyan status code. + * + * The behavior of this function is undefined, if `s1` or `s2` are views into the `destination` + * string or `destination` points to an already initialized `ZyanString` instance. + * + * Finalization is not required for strings created by this function. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringConcatCustomBuffer(ZyanString* destination, + const ZyanStringView* s1, const ZyanStringView* s2, char* buffer, ZyanUSize capacity); + +/* ---------------------------------------------------------------------------------------------- */ +/* Views */ +/* ---------------------------------------------------------------------------------------------- */ + +/** + * Returns a view inside an existing view/string. + * + * @param view A pointer to the `ZyanStringView` instance. + * @param source A pointer to the source string. + * + * @return A zyan status code. + * + * The `ZYAN_STRING_TO_VEW` macro can be used to pass any `ZyanString` instance as value for the + * `source` string. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringViewInsideView(ZyanStringView* view, + const ZyanStringView* source); + +/** + * Returns a view inside an existing view/string starting from the given `index`. + * + * @param view A pointer to the `ZyanStringView` instance. + * @param source A pointer to the source string. + * @param index The start index. + * @param count The number of characters. + * + * @return A zyan status code. + * + * The `ZYAN_STRING_TO_VEW` macro can be used to pass any `ZyanString` instance as value for the + * `source` string. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringViewInsideViewEx(ZyanStringView* view, + const ZyanStringView* source, ZyanUSize index, ZyanUSize count); + +/** + * Returns a view inside a null-terminated C-style string. + * + * @param view A pointer to the `ZyanStringView` instance. + * @param string The C-style string. + * + * @return A zyan status code. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringViewInsideBuffer(ZyanStringView* view, const char* string); + +/** + * Returns a view inside a character buffer with custom length. + * + * @param view A pointer to the `ZyanStringView` instance. + * @param buffer A pointer to the buffer containing the string characters. + * @param length The length of the string (number of characters). + * + * @return A zyan status code. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringViewInsideBufferEx(ZyanStringView* view, const char* buffer, + ZyanUSize length); + +/** + * Returns the size (number of characters) of the view. + * + * @param view A pointer to the `ZyanStringView` instance. + * @param size Receives the size (number of characters) of the view. + * + * @return A zyan status code. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringViewGetSize(const ZyanStringView* view, ZyanUSize* size); + +/** + * Returns the C-style string of the given `ZyanString` instance. + * + * @warning The string is not guaranteed to be null terminated! + * + * @param view A pointer to the `ZyanStringView` instance. + * @param buffer Receives a pointer to the C-style string. + * + * @return A zyan status code. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringViewGetData(const ZyanStringView* view, const char** buffer); + +/* ---------------------------------------------------------------------------------------------- */ +/* Character access */ +/* ---------------------------------------------------------------------------------------------- */ + +/** + * Returns the character at the given `index`. + * + * @param string A pointer to the `ZyanStringView` instance. + * @param index The character index. + * @param value Receives the desired character of the string. + * + * @return A zyan status code. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringGetChar(const ZyanStringView* string, ZyanUSize index, + char* value); + +/** + * Returns a pointer to the character at the given `index`. + * + * @param string A pointer to the `ZyanString` instance. + * @param index The character index. + * @param value Receives a pointer to the desired character in the string. + * + * @return A zyan status code. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringGetCharMutable(ZyanString* string, ZyanUSize index, + char** value); + +/** + * Assigns a new value to the character at the given `index`. + * + * @param string A pointer to the `ZyanString` instance. + * @param index The character index. + * @param value The character to assign. + * + * @return A zyan status code. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringSetChar(ZyanString* string, ZyanUSize index, char value); + +/* ---------------------------------------------------------------------------------------------- */ +/* Insertion */ +/* ---------------------------------------------------------------------------------------------- */ + +/** + * Inserts the content of the source string in the destination string at the given `index`. + * + * @param destination The destination string. + * @param index The insert index. + * @param source The source string. + * + * @return A zyan status code. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringInsert(ZyanString* destination, ZyanUSize index, + const ZyanStringView* source); + +/** + * Inserts `count` characters of the source string in the destination string at the given + * `index`. + * + * @param destination The destination string. + * @param destination_index The insert index. + * @param source The source string. + * @param source_index The index of the first character to be inserted from the source + * string. + * @param count The number of chars to insert from the source string. + * + * @return A zyan status code. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringInsertEx(ZyanString* destination, ZyanUSize destination_index, + const ZyanStringView* source, ZyanUSize source_index, ZyanUSize count); + +/* ---------------------------------------------------------------------------------------------- */ +/* Appending */ +/* ---------------------------------------------------------------------------------------------- */ + +/** + * Appends the content of the source string to the end of the destination string. + * + * @param destination The destination string. + * @param source The source string. + * + * @return A zyan status code. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringAppend(ZyanString* destination, const ZyanStringView* source); + +/** + * Appends `count` characters of the source string to the end of the destination string. + * + * @param destination The destination string. + * @param source The source string. + * @param source_index The index of the first character to be appended from the source string. + * @param count The number of chars to append from the source string. + * + * @return A zyan status code. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringAppendEx(ZyanString* destination, const ZyanStringView* source, + ZyanUSize source_index, ZyanUSize count); + +/* ---------------------------------------------------------------------------------------------- */ +/* Deletion */ +/* ---------------------------------------------------------------------------------------------- */ + +/** + * Deletes characters from the given string, starting at `index`. + * + * @param string A pointer to the `ZyanString` instance. + * @param index The index of the first character to delete. + * @param count The number of characters to delete. + * + * @return A zyan status code. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringDelete(ZyanString* string, ZyanUSize index, ZyanUSize count); + +/** + * Deletes all remaining characters from the given string, starting at `index`. + * + * @param string A pointer to the `ZyanString` instance. + * @param index The index of the first character to delete. + * + * @return A zyan status code. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringTruncate(ZyanString* string, ZyanUSize index); + +/** + * Erases the given string. + * + * @param string A pointer to the `ZyanString` instance. + * + * @return A zyan status code. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringClear(ZyanString* string); + +/* ---------------------------------------------------------------------------------------------- */ +/* Searching */ +/* ---------------------------------------------------------------------------------------------- */ + +/** + * Searches for the first occurrence of `needle` in the given `haystack` starting from the + * left. + * + * @param haystack The string to search in. + * @param needle The sub-string to search for. + * @param found_index A pointer to a variable that receives the index of the first occurrence of + * `needle`. + * + * @return `ZYAN_STATUS_TRUE`, if the needle was found, `ZYAN_STATUS_FALSE`, if not, or another + * zyan status code, if an error occured. + * + * The `found_index` is set to `-1`, if the needle was not found. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringLPos(const ZyanStringView* haystack, + const ZyanStringView* needle, ZyanISize* found_index); + +/** + * Searches for the first occurrence of `needle` in the given `haystack` starting from the + * left. + * + * @param haystack The string to search in. + * @param needle The sub-string to search for. + * @param found_index A pointer to a variable that receives the index of the first occurrence of + * `needle`. + * @param index The start index. + * @param count The maximum number of characters to iterate, beginning from the start + * `index`. + * + * @return `ZYAN_STATUS_TRUE`, if the needle was found, `ZYAN_STATUS_FALSE`, if not, or another + * zyan status code, if an error occured. + * + * The `found_index` is set to `-1`, if the needle was not found. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringLPosEx(const ZyanStringView* haystack, + const ZyanStringView* needle, ZyanISize* found_index, ZyanUSize index, ZyanUSize count); + +/** + * Performs a case-insensitive search for the first occurrence of `needle` in the given + * `haystack` starting from the left. + * + * @param haystack The string to search in. + * @param needle The sub-string to search for. + * @param found_index A pointer to a variable that receives the index of the first occurrence of + * `needle`. + * + * @return `ZYAN_STATUS_TRUE`, if the needle was found, `ZYAN_STATUS_FALSE`, if not, or another + * zyan status code, if an error occured. + * + * The `found_index` is set to `-1`, if the needle was not found. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringLPosI(const ZyanStringView* haystack, + const ZyanStringView* needle, ZyanISize* found_index); + +/** + * Performs a case-insensitive search for the first occurrence of `needle` in the given + * `haystack` starting from the left. + * + * @param haystack The string to search in. + * @param needle The sub-string to search for. + * @param found_index A pointer to a variable that receives the index of the first occurrence of + * `needle`. + * @param index The start index. + * @param count The maximum number of characters to iterate, beginning from the start + * `index`. + * + * @return `ZYAN_STATUS_TRUE`, if the needle was found, `ZYAN_STATUS_FALSE`, if not, or another + * zyan status code, if an error occurred. + * + * The `found_index` is set to `-1`, if the needle was not found. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringLPosIEx(const ZyanStringView* haystack, + const ZyanStringView* needle, ZyanISize* found_index, ZyanUSize index, ZyanUSize count); + +/** + * Searches for the first occurrence of `needle` in the given `haystack` starting from the + * right. + * + * @param haystack The string to search in. + * @param needle The sub-string to search for. + * @param found_index A pointer to a variable that receives the index of the first occurrence of + * `needle`. + * + * @return `ZYAN_STATUS_TRUE`, if the needle was found, `ZYAN_STATUS_FALSE`, if not, or another + * zyan status code, if an error occurred. + * + * The `found_index` is set to `-1`, if the needle was not found. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringRPos(const ZyanStringView* haystack, + const ZyanStringView* needle, ZyanISize* found_index); + +/** + * Searches for the first occurrence of `needle` in the given `haystack` starting from the + * right. + * + * @param haystack The string to search in. + * @param needle The sub-string to search for. + * @param found_index A pointer to a variable that receives the index of the first occurrence of + * `needle`. + * @param index The start index. + * @param count The maximum number of characters to iterate, beginning from the start + * `index`. + * + * @return `ZYAN_STATUS_TRUE`, if the needle was found, `ZYAN_STATUS_FALSE`, if not, or another + * zyan status code, if an error occurred. + * + * The `found_index` is set to `-1`, if the needle was not found. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringRPosEx(const ZyanStringView* haystack, + const ZyanStringView* needle, ZyanISize* found_index, ZyanUSize index, ZyanUSize count); + +/** + * Performs a case-insensitive search for the first occurrence of `needle` in the given + * `haystack` starting from the right. + * + * @param haystack The string to search in. + * @param needle The sub-string to search for. + * @param found_index A pointer to a variable that receives the index of the first occurrence of + * `needle`. + * + * @return `ZYAN_STATUS_TRUE`, if the needle was found, `ZYAN_STATUS_FALSE`, if not, or another + * zyan status code, if an error occurred. + * + * The `found_index` is set to `-1`, if the needle was not found. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringRPosI(const ZyanStringView* haystack, + const ZyanStringView* needle, ZyanISize* found_index); + +/** + * Performs a case-insensitive search for the first occurrence of `needle` in the given + * `haystack` starting from the right. + * + * @param haystack The string to search in. + * @param needle The sub-string to search for. + * @param found_index A pointer to a variable that receives the index of the first occurrence of + * `needle`. + * @param index The start index. + * @param count The maximum number of characters to iterate, beginning from the start + * `index`. + * + * @return `ZYAN_STATUS_TRUE`, if the needle was found, `ZYAN_STATUS_FALSE`, if not, or another + * zyan status code, if an error occurred. + * + * The `found_index` is set to `-1`, if the needle was not found. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringRPosIEx(const ZyanStringView* haystack, + const ZyanStringView* needle, ZyanISize* found_index, ZyanUSize index, ZyanUSize count); + +/* ---------------------------------------------------------------------------------------------- */ +/* Comparing */ +/* ---------------------------------------------------------------------------------------------- */ + +/** + * Compares two strings. + * + * @param s1 The first string + * @param s2 The second string. + * @param result Receives the comparison result. + * + * Values: + * - `result < 0` -> The first character that does not match has a lower value + * in `s1` than in `s2`. + * - `result == 0` -> The contents of both strings are equal. + * - `result > 0` -> The first character that does not match has a greater value + * in `s1` than in `s2`. + * + * @return `ZYAN_STATUS_TRUE`, if the strings are equal, `ZYAN_STATUS_FALSE`, if not, or another + * zyan status code, if an error occurred. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringCompare(const ZyanStringView* s1, const ZyanStringView* s2, + ZyanI32* result); + +/** + * Performs a case-insensitive comparison of two strings. + * + * @param s1 The first string + * @param s2 The second string. + * @param result Receives the comparison result. + * + * Values: + * - `result < 0` -> The first character that does not match has a lower value + * in `s1` than in `s2`. + * - `result == 0` -> The contents of both strings are equal. + * - `result > 0` -> The first character that does not match has a greater value + * in `s1` than in `s2`. + * + * @return `ZYAN_STATUS_TRUE`, if the strings are equal, `ZYAN_STATUS_FALSE`, if not, or another + * zyan status code, if an error occurred. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringCompareI(const ZyanStringView* s1, const ZyanStringView* s2, + ZyanI32* result); + +/* ---------------------------------------------------------------------------------------------- */ +/* Case conversion */ +/* ---------------------------------------------------------------------------------------------- */ + +/** + * Converts the given string to lowercase letters. + * + * @param string A pointer to the `ZyanString` instance. + * + * @return A zyan status code. + * + * This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified + * `ZyanString` instance. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringToLowerCase(ZyanString* string); + +/** + * Converts `count` characters of the given string to lowercase letters. + * + * @param string A pointer to the `ZyanString` instance. + * @param index The start index. + * @param count The number of characters to convert, beginning from the start `index`. + * + * @return A zyan status code. + * + * This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified + * `ZyanString` instance. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringToLowerCaseEx(ZyanString* string, ZyanUSize index, + ZyanUSize count); + +/** + * Converts the given string to uppercase letters. + * + * @param string A pointer to the `ZyanString` instance. + * + * @return A zyan status code. + * + * This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified + * `ZyanString` instance. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringToUpperCase(ZyanString* string); + +/** + * Converts `count` characters of the given string to uppercase letters. + * + * @param string A pointer to the `ZyanString` instance. + * @param index The start index. + * @param count The number of characters to convert, beginning from the start `index`. + * + * @return A zyan status code. + * + * This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified + * `ZyanString` instance. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringToUpperCaseEx(ZyanString* string, ZyanUSize index, + ZyanUSize count); + +/* ---------------------------------------------------------------------------------------------- */ +/* Memory management */ +/* ---------------------------------------------------------------------------------------------- */ + +/** + * Resizes the given `ZyanString` instance. + * + * @param string A pointer to the `ZyanString` instance. + * @param size The new size of the string. + * + * @return A zyan status code. + * + * This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified + * `ZyanString` instance. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringResize(ZyanString* string, ZyanUSize size); + +/** + * Changes the capacity of the given `ZyanString` instance. + * + * @param string A pointer to the `ZyanString` instance. + * @param capacity The new minimum capacity of the string. + * + * @return A zyan status code. + * + * This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified + * `ZyanString` instance. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringReserve(ZyanString* string, ZyanUSize capacity); + +/** + * Shrinks the capacity of the given string to match it's size. + * + * @param string A pointer to the `ZyanString` instance. + * + * @return A zyan status code. + * + * This function will fail, if the `ZYAN_STRING_IS_IMMUTABLE` flag is set for the specified + * `ZyanString` instance. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringShrinkToFit(ZyanString* string); + +/* ---------------------------------------------------------------------------------------------- */ +/* Information */ +/* ---------------------------------------------------------------------------------------------- */ + +/** + * Returns the current capacity of the string. + * + * @param string A pointer to the `ZyanString` instance. + * @param capacity Receives the size of the string. + * + * @return A zyan status code. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringGetCapacity(const ZyanString* string, ZyanUSize* capacity); + +/** + * Returns the current size (number of characters) of the string (excluding the + * terminating zero character). + * + * @param string A pointer to the `ZyanString` instance. + * @param size Receives the size (number of characters) of the string. + * + * @return A zyan status code. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringGetSize(const ZyanString* string, ZyanUSize* size); + +/** + * Returns the C-style string of the given `ZyanString` instance. + * + * @param string A pointer to the `ZyanString` instance. + * @param value Receives a pointer to the C-style string. + * + * @return A zyan status code. + */ +ZYCORE_EXPORT ZyanStatus ZyanStringGetData(const ZyanString* string, const char** value); + +/* ---------------------------------------------------------------------------------------------- */ + +/* ============================================================================================== */ + +#ifdef __cplusplus +} +#endif + +#endif // ZYCORE_STRING_H |