| 1 | // |
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| 2 | // TxWin, Textmode Windowing Library |
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| 3 | // |
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| 4 | // Original code Copyright (c) 1995-2005 Fsys Software and Jan van Wijk |
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| 5 | // |
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| 6 | // ========================================================================== |
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| 7 | // |
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| 8 | // This file contains Original Code and/or Modifications of Original Code as |
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| 9 | // defined in and that are subject to the GNU Lesser General Public License. |
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| 10 | // You may not use this file except in compliance with the License. |
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| 11 | // BY USING THIS FILE YOU AGREE TO ALL TERMS AND CONDITIONS OF THE LICENSE. |
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| 12 | // A copy of the License is provided with the Original Code and Modifications, |
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| 13 | // and is also available at http://www.dfsee.com/txwin/lgpl.htm |
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| 14 | // |
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| 15 | // This library is free software; you can redistribute it and/or modify |
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| 16 | // it under the terms of the GNU Lesser General Public License as published |
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| 17 | // by the Free Software Foundation; either version 2.1 of the License, |
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| 18 | // or (at your option) any later version. |
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| 19 | // |
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| 20 | // This library is distributed in the hope that it will be useful, |
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| 21 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 22 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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| 23 | // See the GNU Lesser General Public License for more details. |
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| 24 | // |
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| 25 | // You should have received a copy of the GNU Lesser General Public License |
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| 26 | // along with this library; (lgpl.htm) if not, write to the Free Software |
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| 27 | // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 28 | // |
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| 29 | // Questions on TxWin licensing can be directed to: txwin@fsys.nl |
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| 30 | // |
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| 31 | // ========================================================================== |
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| 32 | // |
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| 33 | // TX string number handling functions |
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| 34 | // |
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| 35 | // Author: J. van Wijk |
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| 36 | // |
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| 37 | // JvW 24-07-2005 Initial version, split off from TXUTIL |
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| 38 | |
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| 39 | #include <txlib.h> |
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| 40 | |
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| 41 | |
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| 42 | /*****************************************************************************/ |
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| 43 | // Test if string represents a valid hex number, allow 0x prefix and ,unit |
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| 44 | /*****************************************************************************/ |
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| 45 | BOOL txIsValidHex // RET string is valid hex |
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| 46 | ( |
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| 47 | char *num // IN candidate string |
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| 48 | ) |
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| 49 | { |
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| 50 | BOOL rc = TRUE; // function return |
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| 51 | char *s = num; |
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| 52 | |
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| 53 | if (strnicmp( s, "0x", 2) == 0) |
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| 54 | { |
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| 55 | s += 2; |
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| 56 | } |
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| 57 | while ((*s) && (*s != ',')) // until end or unit separator |
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| 58 | { |
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| 59 | if (isxdigit(*s)) |
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| 60 | { |
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| 61 | s++; |
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| 62 | } |
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| 63 | else |
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| 64 | { |
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| 65 | rc = FALSE; |
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| 66 | break; |
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| 67 | } |
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| 68 | } |
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| 69 | return (rc); |
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| 70 | } // end 'txIsValidHex' |
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| 71 | /*---------------------------------------------------------------------------*/ |
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| 72 | |
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| 73 | |
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| 74 | /*****************************************************************************/ |
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| 75 | // Test if string represents a valid decimal nr, allow 0t/0n prefix and ,unit |
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| 76 | /*****************************************************************************/ |
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| 77 | BOOL txIsValidDec // RET string is not decimal |
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| 78 | ( |
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| 79 | char *num // IN candidate string |
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| 80 | ) |
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| 81 | { |
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| 82 | BOOL rc = TRUE; // function return |
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| 83 | char *s = num; |
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| 84 | |
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| 85 | if ((strnicmp( s, "0t", 2) == 0) || |
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| 86 | (strnicmp( s, "0n", 2) == 0) ) |
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| 87 | { |
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| 88 | s += 2; |
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| 89 | } |
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| 90 | while ((*s) && (*s != ',')) // until end or unit separator |
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| 91 | { |
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| 92 | if (isdigit(*s)) |
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| 93 | { |
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| 94 | s++; |
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| 95 | } |
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| 96 | else |
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| 97 | { |
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| 98 | rc = FALSE; |
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| 99 | break; |
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| 100 | } |
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| 101 | } |
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| 102 | return (rc); |
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| 103 | } // end 'txIsValidDec' |
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| 104 | /*---------------------------------------------------------------------------*/ |
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| 105 | |
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| 106 | |
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| 107 | /*****************************************************************************/ |
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| 108 | // Test if string starts with a valid MCS prefix 0x 0n 0t 0x (case insensitive) |
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| 109 | /*****************************************************************************/ |
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| 110 | BOOL txHasMcsPrefix // RET string has MCS prefix |
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| 111 | ( |
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| 112 | char *num // IN candidate string |
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| 113 | ) |
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| 114 | { |
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| 115 | BOOL rc = FALSE; // function return |
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| 116 | |
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| 117 | ENTER(); |
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| 118 | TRACES(("num string: '%s'\n", num)); |
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| 119 | |
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| 120 | if (num[0] == '0') |
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| 121 | { |
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| 122 | if (strchr("NnOoTtXx", num[1]) != NULL) |
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| 123 | { |
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| 124 | rc = TRUE; |
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| 125 | } |
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| 126 | } |
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| 127 | BRETURN (rc); |
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| 128 | } // end 'txHasMcsPrefix' |
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| 129 | /*---------------------------------------------------------------------------*/ |
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