70 lines
1.2 KiB
C
70 lines
1.2 KiB
C
/*
|
|
* Copyright (c) 2008 Travis Geiselbrecht
|
|
*
|
|
* Use of this source code is governed by a MIT-style
|
|
* license that can be found in the LICENSE file or at
|
|
* https://opensource.org/licenses/MIT
|
|
*/
|
|
#include <ctype.h>
|
|
|
|
int isblank(int c) {
|
|
return (c == ' ' || c == '\t');
|
|
}
|
|
|
|
int isspace(int c) {
|
|
return (c == ' ' || c == '\f' || c == '\n' || c == '\r' || c == '\t' || c == '\v');
|
|
}
|
|
|
|
int islower(int c) {
|
|
return ((c >= 'a') && (c <= 'z'));
|
|
}
|
|
|
|
int isupper(int c) {
|
|
return ((c >= 'A') && (c <= 'Z'));
|
|
}
|
|
|
|
int isdigit(int c) {
|
|
return ((c >= '0') && (c <= '9'));
|
|
}
|
|
|
|
int isalpha(int c) {
|
|
return isupper(c) || islower(c);
|
|
}
|
|
|
|
int isalnum(int c) {
|
|
return isalpha(c) || isdigit(c);
|
|
}
|
|
|
|
int isxdigit(int c) {
|
|
return isdigit(c) || ((c >= 'a') && (c <= 'f')) || ((c >= 'A') && (c <= 'F'));
|
|
}
|
|
|
|
int isgraph(int c) {
|
|
return ((c > ' ') && (c < 0x7f));
|
|
}
|
|
|
|
int iscntrl(int c) {
|
|
return ((c < ' ') || (c == 0x7f));
|
|
}
|
|
|
|
int isprint(int c) {
|
|
return ((c >= 0x20) && (c < 0x7f));
|
|
}
|
|
|
|
int ispunct(int c) {
|
|
return isgraph(c) && (!isalnum(c));
|
|
}
|
|
|
|
int tolower(int c) {
|
|
if ((c >= 'A') && (c <= 'Z'))
|
|
return c + ('a' - 'A');
|
|
return c;
|
|
}
|
|
|
|
int toupper(int c) {
|
|
if ((c >= 'a') && (c <= 'z'))
|
|
return c + ('A' - 'a');
|
|
return c;
|
|
}
|
|
|