| 1 | /* Copyright (C) 2010-2020 The RetroArch team |
| 2 | * |
| 3 | * --------------------------------------------------------------------------------------- |
| 4 | * The following license statement only applies to this file (stdstring.h). |
| 5 | * --------------------------------------------------------------------------------------- |
| 6 | * |
| 7 | * Permission is hereby granted, free of charge, |
| 8 | * to any person obtaining a copy of this software and associated documentation files (the "Software"), |
| 9 | * to deal in the Software without restriction, including without limitation the rights to |
| 10 | * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, |
| 11 | * and to permit persons to whom the Software is furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, |
| 16 | * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 18 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| 19 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 21 | */ |
| 22 | |
| 23 | #ifndef __LIBRETRO_SDK_STDSTRING_H |
| 24 | #define __LIBRETRO_SDK_STDSTRING_H |
| 25 | |
| 26 | #include <stdlib.h> |
| 27 | #include <stddef.h> |
| 28 | #include <ctype.h> |
| 29 | #include <string.h> |
| 30 | #include <boolean.h> |
| 31 | |
| 32 | #include <retro_common_api.h> |
| 33 | #include <retro_inline.h> |
| 34 | #include <compat/strl.h> |
| 35 | |
| 36 | RETRO_BEGIN_DECLS |
| 37 | |
| 38 | #define STRLEN_CONST(x) ((sizeof((x))-1)) |
| 39 | |
| 40 | #define strcpy_literal(a, b) strcpy(a, b) |
| 41 | |
| 42 | #define string_is_not_equal(a, b) !string_is_equal((a), (b)) |
| 43 | |
| 44 | #define string_is_not_equal_fast(a, b, size) (memcmp(a, b, size) != 0) |
| 45 | #define string_is_equal_fast(a, b, size) (memcmp(a, b, size) == 0) |
| 46 | |
| 47 | #define TOLOWER(c) (c | (lr_char_props[c] & 0x20)) |
| 48 | #define TOUPPER(c) (c & ~(lr_char_props[c] & 0x20)) |
| 49 | |
| 50 | /* C standard says \f \v are space, but this one disagrees */ |
| 51 | #define ISSPACE(c) (lr_char_props[c] & 0x80) |
| 52 | |
| 53 | #define ISDIGIT(c) (lr_char_props[c] & 0x40) |
| 54 | #define ISALPHA(c) (lr_char_props[c] & 0x20) |
| 55 | #define ISLOWER(c) (lr_char_props[c] & 0x04) |
| 56 | #define ISUPPER(c) (lr_char_props[c] & 0x02) |
| 57 | #define ISALNUM(c) (lr_char_props[c] & 0x60) |
| 58 | #define ISUALPHA(c) (lr_char_props[c] & 0x28) |
| 59 | #define ISUALNUM(c) (lr_char_props[c] & 0x68) |
| 60 | #define IS_XDIGIT(c) (lr_char_props[c] & 0x01) |
| 61 | |
| 62 | /* Deprecated alias, all callers should use string_is_equal_case_insensitive instead */ |
| 63 | #define string_is_equal_noncase string_is_equal_case_insensitive |
| 64 | |
| 65 | static INLINE bool string_is_empty(const char *data) |
| 66 | { |
| 67 | return !data || (*data == '\0'); |
| 68 | } |
| 69 | |
| 70 | static INLINE bool string_is_equal(const char *a, const char *b) |
| 71 | { |
| 72 | return (a && b) ? !strcmp(a, b) : false; |
| 73 | } |
| 74 | |
| 75 | static INLINE bool string_starts_with_size(const char *str, const char *prefix, |
| 76 | size_t size) |
| 77 | { |
| 78 | return (str && prefix) ? !strncmp(prefix, str, size) : false; |
| 79 | } |
| 80 | |
| 81 | static INLINE bool string_starts_with(const char *str, const char *prefix) |
| 82 | { |
| 83 | return (str && prefix) ? !strncmp(prefix, str, strlen(prefix)) : false; |
| 84 | } |
| 85 | |
| 86 | static INLINE bool string_ends_with_size(const char *str, const char *suffix, |
| 87 | size_t str_len, size_t suffix_len) |
| 88 | { |
| 89 | return (str_len < suffix_len) ? false : |
| 90 | !memcmp(suffix, str + (str_len - suffix_len), suffix_len); |
| 91 | } |
| 92 | |
| 93 | static INLINE bool string_ends_with(const char *str, const char *suffix) |
| 94 | { |
| 95 | if (!str || !suffix) |
| 96 | return false; |
| 97 | return string_ends_with_size(str, suffix, strlen(str), strlen(suffix)); |
| 98 | } |
| 99 | |
| 100 | /* Returns the length of 'str' (c.f. strlen()), but only |
| 101 | * checks the first 'size' characters |
| 102 | * - If 'str' is NULL, returns 0 |
| 103 | * - If 'str' is not NULL and no '\0' character is found |
| 104 | * in the first 'size' characters, returns 'size' */ |
| 105 | static INLINE size_t strlen_size(const char *str, size_t size) |
| 106 | { |
| 107 | size_t i = 0; |
| 108 | if (str) |
| 109 | while (i < size && str[i]) i++; |
| 110 | return i; |
| 111 | } |
| 112 | |
| 113 | |
| 114 | static INLINE bool string_is_equal_case_insensitive(const char *a, |
| 115 | const char *b) |
| 116 | { |
| 117 | int result = 0; |
| 118 | const unsigned char *p1 = (const unsigned char*)a; |
| 119 | const unsigned char *p2 = (const unsigned char*)b; |
| 120 | |
| 121 | if (!a || !b) |
| 122 | return false; |
| 123 | if (p1 == p2) |
| 124 | return true; |
| 125 | |
| 126 | while ((result = tolower (*p1) - tolower (*p2++)) == 0) |
| 127 | if (*p1++ == '\0') |
| 128 | break; |
| 129 | |
| 130 | return (result == 0); |
| 131 | } |
| 132 | |
| 133 | char *string_to_upper(char *s); |
| 134 | |
| 135 | char *string_to_lower(char *s); |
| 136 | |
| 137 | char *string_ucwords(char *s); |
| 138 | |
| 139 | char *string_replace_substring(const char *in, const char *pattern, |
| 140 | const char *by); |
| 141 | |
| 142 | /* Remove leading whitespaces */ |
| 143 | char *string_trim_whitespace_left(char *const s); |
| 144 | |
| 145 | /* Remove trailing whitespaces */ |
| 146 | char *string_trim_whitespace_right(char *const s); |
| 147 | |
| 148 | /* Remove leading and trailing whitespaces */ |
| 149 | char *string_trim_whitespace(char *const s); |
| 150 | |
| 151 | /* max_lines == 0 means no limit */ |
| 152 | char *word_wrap(char *buffer, const char *string, |
| 153 | int line_width, bool unicode, unsigned max_lines); |
| 154 | |
| 155 | /* Splits string into tokens seperated by 'delim' |
| 156 | * > Returned token string must be free()'d |
| 157 | * > Returns NULL if token is not found |
| 158 | * > After each call, 'str' is set to the position after the |
| 159 | * last found token |
| 160 | * > Tokens *include* empty strings |
| 161 | * Usage example: |
| 162 | * char *str = "1,2,3,4,5,6,7,,,10,"; |
| 163 | * char **str_ptr = &str; |
| 164 | * char *token = NULL; |
| 165 | * while ((token = string_tokenize(str_ptr, ","))) |
| 166 | * { |
| 167 | * printf("%s\n", token); |
| 168 | * free(token); |
| 169 | * token = NULL; |
| 170 | * } |
| 171 | */ |
| 172 | char* string_tokenize(char **str, const char *delim); |
| 173 | |
| 174 | /* Removes every instance of character 'c' from 'str' */ |
| 175 | void string_remove_all_chars(char *str, char c); |
| 176 | |
| 177 | /* Replaces every instance of character 'find' in 'str' |
| 178 | * with character 'replace' */ |
| 179 | void string_replace_all_chars(char *str, char find, char replace); |
| 180 | |
| 181 | /* Converts string to unsigned integer. |
| 182 | * Returns 0 if string is invalid */ |
| 183 | unsigned string_to_unsigned(const char *str); |
| 184 | |
| 185 | /* Converts hexadecimal string to unsigned integer. |
| 186 | * Handles optional leading '0x'. |
| 187 | * Returns 0 if string is invalid */ |
| 188 | unsigned string_hex_to_unsigned(const char *str); |
| 189 | |
| 190 | char *string_init(const char *src); |
| 191 | |
| 192 | void string_set(char **string, const char *src); |
| 193 | |
| 194 | extern const unsigned char lr_char_props[256]; |
| 195 | |
| 196 | RETRO_END_DECLS |
| 197 | |
| 198 | #endif |