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Add all missing "is characteristic" stdlib functions

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SDL has been missing a bunch of these 'isX' functions for some time,
where X is some characteristic of a given character.

This commit adds the rest of them to the SDL stdlib, so now we have:
- SDL_isalpha()
- SDL_isalnum()
- SDL_isblank()
- SDL_iscntrl()
- SDL_isxdigit()
- SDL_ispunct()
- SDL_isprint()
- SDL_isgraph()
This commit is contained in:
Misa
2021-02-13 11:21:19 -08:00
committed by Sam Lantinga
parent 88f1c2c1b0
commit dfe219ec71
4 changed files with 43 additions and 0 deletions
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19
src/stdlib/SDL_stdlib.c
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@@ -504,21 +504,40 @@ int SDL_abs(int x)
}
#if defined(HAVE_CTYPE_H)
int SDL_isalpha(int x) { return isalpha(x); }
int SDL_isalnum(int x) { return isalnum(x); }
int SDL_isdigit(int x) { return isdigit(x); }
int SDL_isxdigit(int x) { return isxdigit(x); }
int SDL_ispunct(int x) { return ispunct(x); }
int SDL_isspace(int x) { return isspace(x); }
int SDL_isupper(int x) { return isupper(x); }
int SDL_islower(int x) { return islower(x); }
int SDL_isprint(int x) { return isprint(x); }
int SDL_isgraph(int x) { return isgraph(x); }
int SDL_iscntrl(int x) { return iscntrl(x); }
int SDL_toupper(int x) { return toupper(x); }
int SDL_tolower(int x) { return tolower(x); }
#else
int SDL_isalpha(int x) { return (SDL_isupper(x)) || (SDL_islower(x)); }
int SDL_isalnum(int x) { return (SDL_isalpha(x)) || (SDL_isdigit(x)); }
int SDL_isdigit(int x) { return ((x) >= '0') && ((x) <= '9'); }
int SDL_isxdigit(int x) { return (SDL_isalpha(x)) || (SDL_isdigit(x)); }
int SDL_ispunct(int x) { return (SDL_isprint(x)) && (!SDL_isalnum(x)); }
int SDL_isspace(int x) { return ((x) == ' ') || ((x) == '\t') || ((x) == '\r') || ((x) == '\n') || ((x) == '\f') || ((x) == '\v'); }
int SDL_isupper(int x) { return ((x) >= 'A') && ((x) <= 'Z'); }
int SDL_islower(int x) { return ((x) >= 'a') && ((x) <= 'z'); }
int SDL_isprint(int x) { return ((x) >= ' ') && ((x) < '\x7f'); }
int SDL_isgraph(int x) { return (SDL_isprint(x)) && ((x) != ' '); }
int SDL_iscntrl(int x) { return (((x) >= '\0') && ((x) <= '\x1f')) || ((x) == '\x7f'); }
int SDL_toupper(int x) { return ((x) >= 'a') && ((x) <= 'z') ? ('A'+((x)-'a')) : (x); }
int SDL_tolower(int x) { return ((x) >= 'A') && ((x) <= 'Z') ? ('a'+((x)-'A')) : (x); }
#endif
#if defined(HAVE_CTYPE_H) && defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
int SDL_isblank(int x) { return isblank(x); }
#else
int SDL_isblank(int x) { return ((x) == ' ') || ((x) == '\t'); }
#endif
#ifndef HAVE_LIBC
/* These are some C runtime intrinsics that need to be defined */