From 7d871ab87d45e535d1512a5834b627cbbce2e66c Mon Sep 17 00:00:00 2001 From: jdgleaver Date: Fri, 17 Sep 2021 10:37:49 +0100 Subject: Replace direct direct file access with VFS routines --- libretro-common/include/string/stdstring.h | 250 +++++++++++++++++++++++++++++ 1 file changed, 250 insertions(+) create mode 100644 libretro-common/include/string/stdstring.h (limited to 'libretro-common/include/string/stdstring.h') diff --git a/libretro-common/include/string/stdstring.h b/libretro-common/include/string/stdstring.h new file mode 100644 index 0000000..e7087d6 --- /dev/null +++ b/libretro-common/include/string/stdstring.h @@ -0,0 +1,250 @@ +/* Copyright (C) 2010-2020 The RetroArch team + * + * --------------------------------------------------------------------------------------- + * The following license statement only applies to this file (stdstring.h). + * --------------------------------------------------------------------------------------- + * + * 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. + */ + +#ifndef __LIBRETRO_SDK_STDSTRING_H +#define __LIBRETRO_SDK_STDSTRING_H + +#include +#include +#include +#include +#include + +#include +#include +#include + +RETRO_BEGIN_DECLS + +#define STRLEN_CONST(x) ((sizeof((x))-1)) + +#define strcpy_literal(a, b) strcpy(a, b) + +#define string_is_not_equal(a, b) !string_is_equal((a), (b)) + +#define string_is_not_equal_fast(a, b, size) (memcmp(a, b, size) != 0) +#define string_is_equal_fast(a, b, size) (memcmp(a, b, size) == 0) + +#define TOLOWER(c) ((c) | (lr_char_props[(unsigned char)(c)] & 0x20)) +#define TOUPPER(c) ((c) & ~(lr_char_props[(unsigned char)(c)] & 0x20)) + +/* C standard says \f \v are space, but this one disagrees */ +#define ISSPACE(c) (lr_char_props[(unsigned char)(c)] & 0x80) + +#define ISDIGIT(c) (lr_char_props[(unsigned char)(c)] & 0x40) +#define ISALPHA(c) (lr_char_props[(unsigned char)(c)] & 0x20) +#define ISLOWER(c) (lr_char_props[(unsigned char)(c)] & 0x04) +#define ISUPPER(c) (lr_char_props[(unsigned char)(c)] & 0x02) +#define ISALNUM(c) (lr_char_props[(unsigned char)(c)] & 0x60) +#define ISUALPHA(c) (lr_char_props[(unsigned char)(c)] & 0x28) +#define ISUALNUM(c) (lr_char_props[(unsigned char)(c)] & 0x68) +#define IS_XDIGIT(c) (lr_char_props[(unsigned char)(c)] & 0x01) + +/* Deprecated alias, all callers should use string_is_equal_case_insensitive instead */ +#define string_is_equal_noncase string_is_equal_case_insensitive + +static INLINE bool string_is_empty(const char *data) +{ + return !data || (*data == '\0'); +} + +static INLINE bool string_is_equal(const char *a, const char *b) +{ + return (a && b) ? !strcmp(a, b) : false; +} + +static INLINE bool string_starts_with_size(const char *str, const char *prefix, + size_t size) +{ + return (str && prefix) ? !strncmp(prefix, str, size) : false; +} + +static INLINE bool string_starts_with(const char *str, const char *prefix) +{ + return (str && prefix) ? !strncmp(prefix, str, strlen(prefix)) : false; +} + +static INLINE bool string_ends_with_size(const char *str, const char *suffix, + size_t str_len, size_t suffix_len) +{ + return (str_len < suffix_len) ? false : + !memcmp(suffix, str + (str_len - suffix_len), suffix_len); +} + +static INLINE bool string_ends_with(const char *str, const char *suffix) +{ + if (!str || !suffix) + return false; + return string_ends_with_size(str, suffix, strlen(str), strlen(suffix)); +} + +/* Returns the length of 'str' (c.f. strlen()), but only + * checks the first 'size' characters + * - If 'str' is NULL, returns 0 + * - If 'str' is not NULL and no '\0' character is found + * in the first 'size' characters, returns 'size' */ +static INLINE size_t strlen_size(const char *str, size_t size) +{ + size_t i = 0; + if (str) + while (i < size && str[i]) i++; + return i; +} + + +static INLINE bool string_is_equal_case_insensitive(const char *a, + const char *b) +{ + int result = 0; + const unsigned char *p1 = (const unsigned char*)a; + const unsigned char *p2 = (const unsigned char*)b; + + if (!a || !b) + return false; + if (p1 == p2) + return true; + + while ((result = tolower (*p1) - tolower (*p2++)) == 0) + if (*p1++ == '\0') + break; + + return (result == 0); +} + +char *string_to_upper(char *s); + +char *string_to_lower(char *s); + +char *string_ucwords(char *s); + +char *string_replace_substring(const char *in, const char *pattern, + const char *by); + +/* Remove leading whitespaces */ +char *string_trim_whitespace_left(char *const s); + +/* Remove trailing whitespaces */ +char *string_trim_whitespace_right(char *const s); + +/* Remove leading and trailing whitespaces */ +char *string_trim_whitespace(char *const s); + +/* + * Wraps string specified by 'src' to destination buffer + * specified by 'dst' and 'dst_size'. + * This function assumes that all glyphs in the string + * have an on-screen pixel width similar to that of + * regular Latin characters - i.e. it will not wrap + * correctly any text containing so-called 'wide' Unicode + * characters (e.g. CJK languages, emojis, etc.). + * + * @param dst pointer to destination buffer. + * @param dst_size size of destination buffer. + * @param src pointer to input string. + * @param line_width max number of characters per line. + * @param wideglyph_width not used, but is necessary to keep + * compatibility with word_wrap_wideglyph(). + * @param max_lines max lines of destination string. + * 0 means no limit. + */ +void word_wrap(char *dst, size_t dst_size, const char *src, + int line_width, int wideglyph_width, unsigned max_lines); + +/* + * Wraps string specified by 'src' to destination buffer + * specified by 'dst' and 'dst_size'. + * This function assumes that all glyphs in the string + * are: + * - EITHER 'non-wide' Unicode glyphs, with an on-screen + * pixel width similar to that of regular Latin characters + * - OR 'wide' Unicode glyphs (e.g. CJK languages, emojis, etc.) + * with an on-screen pixel width defined by 'wideglyph_width' + * Note that wrapping may occur in inappropriate locations + * if 'src' string contains 'wide' Unicode characters whose + * on-screen pixel width deviates greatly from the set + * 'wideglyph_width' value. + * + * @param dst pointer to destination buffer. + * @param dst_size size of destination buffer. + * @param src pointer to input string. + * @param line_width max number of characters per line. + * @param wideglyph_width effective width of 'wide' Unicode glyphs. + * the value here is normalised relative to the + * typical on-screen pixel width of a regular + * Latin character: + * - a regular Latin character is defined to + * have an effective width of 100 + * - wideglyph_width = 100 * (wide_character_pixel_width / latin_character_pixel_width) + * - e.g. if 'wide' Unicode characters in 'src' + * have an on-screen pixel width twice that of + * regular Latin characters, wideglyph_width + * would be 200 + * @param max_lines max lines of destination string. + * 0 means no limit. + */ +void word_wrap_wideglyph(char *dst, size_t dst_size, const char *src, + int line_width, int wideglyph_width, unsigned max_lines); + +/* Splits string into tokens seperated by 'delim' + * > Returned token string must be free()'d + * > Returns NULL if token is not found + * > After each call, 'str' is set to the position after the + * last found token + * > Tokens *include* empty strings + * Usage example: + * char *str = "1,2,3,4,5,6,7,,,10,"; + * char **str_ptr = &str; + * char *token = NULL; + * while ((token = string_tokenize(str_ptr, ","))) + * { + * printf("%s\n", token); + * free(token); + * token = NULL; + * } + */ +char* string_tokenize(char **str, const char *delim); + +/* Removes every instance of character 'c' from 'str' */ +void string_remove_all_chars(char *str, char c); + +/* Replaces every instance of character 'find' in 'str' + * with character 'replace' */ +void string_replace_all_chars(char *str, char find, char replace); + +/* Converts string to unsigned integer. + * Returns 0 if string is invalid */ +unsigned string_to_unsigned(const char *str); + +/* Converts hexadecimal string to unsigned integer. + * Handles optional leading '0x'. + * Returns 0 if string is invalid */ +unsigned string_hex_to_unsigned(const char *str); + +char *string_init(const char *src); + +void string_set(char **string, const char *src); + +extern const unsigned char lr_char_props[256]; + +RETRO_END_DECLS + +#endif -- cgit v1.2.3