Travis Geiselbrecht | 1d0df69 | 2008-09-01 02:26:09 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2008 Travis Geiselbrecht |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining |
| 5 | * a copy of this software and associated documentation files |
| 6 | * (the "Software"), to deal in the Software without restriction, |
| 7 | * including without limitation the rights to use, copy, modify, merge, |
| 8 | * publish, distribute, sublicense, and/or sell copies of the Software, |
| 9 | * and to permit persons to whom the Software is furnished to do so, |
| 10 | * subject to the following conditions: |
| 11 | * |
| 12 | * The above copyright notice and this permission notice shall be |
| 13 | * included in all copies or substantial portions of the Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 16 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 17 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 18 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| 19 | * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| 20 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| 21 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 22 | */ |
| 23 | #include <ctype.h> |
| 24 | |
| 25 | #if 0 |
| 26 | /* XXX unimplemented for now */ |
| 27 | int iscntrl(int c); |
| 28 | int isgraph(int c); |
| 29 | int isprint(int c); |
| 30 | int ispunct(int c); |
| 31 | #endif |
| 32 | |
| 33 | int isblank(int c) |
| 34 | { |
| 35 | return (c == ' ' || c == '\t'); |
| 36 | } |
| 37 | |
| 38 | int isspace(int c) |
| 39 | { |
| 40 | return (c == ' ' || c == '\f' || c == '\n' || c == '\r' || c == '\t' || c == '\v'); |
| 41 | } |
| 42 | |
| 43 | int islower(int c) |
| 44 | { |
| 45 | return ((c >= 'a') && (c <= 'z')); |
| 46 | } |
| 47 | |
| 48 | int isupper(int c) |
| 49 | { |
| 50 | return ((c >= 'A') && (c <= 'Z')); |
| 51 | } |
| 52 | |
| 53 | int isdigit(int c) |
| 54 | { |
| 55 | return ((c >= '0') && (c <= '9')); |
| 56 | } |
| 57 | |
| 58 | int isalpha(int c) |
| 59 | { |
| 60 | return isupper(c) || islower(c); |
| 61 | } |
| 62 | |
| 63 | int isalnum(int c) |
| 64 | { |
| 65 | return isalpha(c) || isdigit(c); |
| 66 | } |
| 67 | |
| 68 | int isxdigit(int c) |
| 69 | { |
| 70 | return isdigit(c) || ((c >= 'a') && (c <= 'f')) || ((c >= 'A') && (c <= 'F')); |
| 71 | } |
| 72 | |
| 73 | int tolower(int c) |
| 74 | { |
| 75 | if ((c >= 'A') && (c <= 'Z')) |
| 76 | return c + ('a' - 'A'); |
| 77 | return c; |
| 78 | } |
| 79 | |
| 80 | int toupper(int c) |
| 81 | { |
| 82 | if ((c >= 'a') && (c <= 'z')) |
| 83 | return c + ('A' - 'a'); |
| 84 | return c; |
| 85 | } |
| 86 | |