103 lines
2.0 KiB
C
103 lines
2.0 KiB
C
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2011.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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ctype.c
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Character types.
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*******************************************************************************/
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#include <ctype.h>
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// TODO: Support other locales than ASCII.
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int isalnum(int c)
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{
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return isalpha(c) || isdigit(c);
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}
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int isalpha(int c)
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{
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return isupper(c) || islower(c);
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}
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int isblank(int c)
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{
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return c == ' ' || c == '\t';
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}
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int iscntrl(int c)
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{
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return 0 <= c && c < 32;
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}
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int isdigit(int c)
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{
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return '0' <= c && c <= '9';
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}
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int isgraph(int c)
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{
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return '!' <= c && c <= '~';
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}
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int islower(int c)
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{
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return 'a' <= c && c <= 'z';
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}
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int isprint(int c)
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{
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return isgraph(c) || c == ' ';
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}
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int ispunct(int c)
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{
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return isprint(c) && c != ' ' && !isalnum(c);
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}
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int isspace(int c)
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{
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return c == '\t' || c == '\n' || c == '\v' || c == '\f' || c == '\r' || c == ' ';
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}
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int isupper(int c)
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{
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return 'A' <= c && c <= 'Z';
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}
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int isxdigit(int c)
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{
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if ( isdigit(c) ) { return 1; }
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if ( 'a' <= c && c <= 'f' ) { return 1; }
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if ( 'A' <= c && c <= 'F' ) { return 1; }
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return 0;
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}
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int tolower(int c)
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{
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if ( 'A' <= c && c <= 'Z' ) { return 'a' + c - 'A'; }
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return c;
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}
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int toupper(int c)
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{
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if ( 'a' <= c && c <= 'z' ) { return 'A' + c - 'a'; }
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return c;
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}
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