1 files changed, 250 insertions, 0 deletions
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 <stdlib.h>
+#include <stddef.h>
+#include <ctype.h>
+#include <string.h>
+#include <boolean.h>
+
+#include <retro_common_api.h>
+#include <retro_inline.h>
+#include <compat/strl.h>
+
+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