1 /*
   2  * Copyright 2000-2001 Sun Microsystems, Inc.  All Rights Reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
  21  * have any questions.
  22  *
  23  */
  24 
  25 #include <ctype.h>
  26 #include <string.h>
  27 #include "ioUtils.hpp"
  28 #include "IOBuf.hpp"
  29 
  30 bool
  31 scanInt(char** data, int* num) {
  32   *num = 0;
  33 
  34   // Skip whitespace
  35   while ((**data != 0) && (isspace(**data))) {
  36     ++*data;
  37   }
  38 
  39   if (**data == 0) {
  40     return false;
  41   }
  42 
  43   while ((**data != 0) && (!isspace(**data))) {
  44     char cur = **data;
  45     if ((cur < '0') || (cur > '9')) {
  46       return false;
  47     }
  48     *num *= 10;
  49     *num += cur - '0';
  50     ++*data;
  51   }
  52 
  53   return true;
  54 }
  55 
  56 bool
  57 scanUnsignedLong(char** data, unsigned long* num) {
  58   *num = 0;
  59 
  60   // Skip whitespace
  61   while ((**data != 0) && (isspace(**data))) {
  62     ++*data;
  63   }
  64 
  65   if (**data == 0) {
  66     return false;
  67   }
  68 
  69   while ((**data != 0) && (!isspace(**data))) {
  70     char cur = **data;
  71     if ((cur < '0') || (cur > '9')) {
  72       return false;
  73     }
  74     *num *= 10;
  75     *num += cur - '0';
  76     ++*data;
  77   }
  78 
  79   return true;
  80 }
  81 
  82 bool
  83 charToNibble(char ascii, int* value) {
  84   if (ascii >= '0' && ascii <= '9') {
  85     *value = ascii - '0';
  86     return true;
  87   } else if (ascii >= 'A' && ascii <= 'F') {
  88     *value = 10 + ascii - 'A';
  89     return true;
  90   } else if (ascii >= 'a' && ascii <= 'f') {
  91     *value = 10 + ascii - 'a';
  92     return true;
  93   }
  94 
  95   return false;
  96 }
  97 
  98 bool
  99 scanAddress(char** data, unsigned long* addr) {
 100   *addr = 0;
 101 
 102   // Skip whitespace
 103   while ((**data != 0) && (isspace(**data))) {
 104     ++*data;
 105   }
 106 
 107   if (**data == 0) {
 108     return false;
 109   }
 110 
 111   if (strncmp(*data, "0x", 2) != 0) {
 112     return false;
 113   }
 114 
 115   *data += 2;
 116 
 117   while ((**data != 0) && (!isspace(**data))) {
 118     int val;
 119     bool res = charToNibble(**data, &val);
 120     if (!res) {
 121       return false;
 122     }
 123     *addr <<= 4;
 124     *addr |= val;
 125     ++*data;
 126   }
 127 
 128   return true;
 129 }
 130 
 131 bool
 132 scanAndSkipBinEscapeChar(char** data) {
 133   // Skip whitespace
 134   while ((**data != 0) && (isspace(**data))) {
 135     ++*data;
 136   }
 137 
 138   if (!IOBuf::isBinEscapeChar(**data)) {
 139     return false;
 140   }
 141 
 142   ++*data;
 143 
 144   return true;
 145 }
 146 
 147 bool
 148 scanBinUnsignedLong(char** data, unsigned long* num) {
 149   *num = 0;
 150   for (int i = 0; i < 4; i++) {
 151     unsigned char val = (unsigned char) **data;
 152     *num = (*num << 8) | val;
 153     ++*data;
 154   }
 155   return true;
 156 }