src/Parsing.cc

   1
   2 /*
   3  * $Id: Parsing.cc,v 1.4 2007/08/13 17:20:51 hno Exp $
   4  *
   5  * DEBUG: section 3     Configuration File Parsing
   6  * AUTHOR: Harvest Derived
   7  *
   8  * SQUID Web Proxy Cache          http://www.squid-cache.org/
   9  * ----------------------------------------------------------
  10  *
  11  *  Squid is the result of efforts by numerous individuals from
  12  *  the Internet community; see the CONTRIBUTORS file for full
  13  *  details.   Many organizations have provided support for Squid's
  14  *  development; see the SPONSORS file for full details.  Squid is
  15  *  Copyrighted (C) 2001 by the Regents of the University of
  16  *  California; see the COPYRIGHT file for full details.  Squid
  17  *  incorporates software developed and/or copyrighted by other
  18  *  sources; see the CREDITS file for full details.
  19  *
  20  *  This program is free software; you can redistribute it and/or modify
  21  *  it under the terms of the GNU General Public License as published by
  22  *  the Free Software Foundation; either version 2 of the License, or
  23  *  (at your option) any later version.
  24  *
  25  *  This program is distributed in the hope that it will be useful,
  26  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  27  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  28  *  GNU General Public License for more details.
  29  *
  30  *  You should have received a copy of the GNU General Public License
  31  *  along with this program; if not, write to the Free Software
  32  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
  33  *
  34  */
  35
  36 #include "Parsing.h"
  37
  38 /*
  39  * These functions is the same as atoi/l/f, except that they check for errors
  40  */
  41
  42 double
  43 xatof(const char *token)
  44 {
  45     char *end;
  46     double ret = strtod(token, &end);
  47
  48     if (ret == 0 && end == token)
  49         self_destruct();
  50
  51     return ret;
  52 }
  53
  54 int
  55 xatoi(const char *token)
  56 {
  57     return xatol(token);
  58 }
  59
  60 long
  61 xatol(const char *token)
  62 {
  63     char *end;
  64     long ret = strtol(token, &end, 10);
  65
  66     if (end == token || *end)
  67         self_destruct();
  68
  69     return ret;
  70 }
  71
  72 unsigned short
  73 xatos(const char *token)
  74 {
  75     long port = xatol(token);
  76
  77     if (port & ~0xFFFF)
  78         self_destruct();
  79
  80     return port;
  81 }
  82
  83 int
  84 GetInteger(void)
  85 {
  86     char *token = strtok(NULL, w_space);
  87     int i;
  88
  89     if (token == NULL)
  90         self_destruct();
  91
  92     // %i honors 0 and 0x prefixes, which are important for things like umask
  93     if (sscanf(token, "%i", &i) != 1)
  94         self_destruct();
  95
  96     return i;
  97 }
  98
  99 u_short
 100 GetShort(void)
 101 {
 102     char *token = strtok(NULL, w_space);
 103
 104     if (token == NULL)
 105         self_destruct();
 106
 107     return xatos(token);
 108 }
 109
 110 bool
 111 StringToInt(const char *s, int &result, const char **p, int base)
 112 {
 113     if (s) {
 114         char *ptr = 0;
 115         const int h = (int) strtol(s, &ptr, base);
 116
 117         if (ptr != s && ptr) {
 118             result = h;
 119
 120             if (p)
 121                 *p = ptr;
 122
 123             return true;
 124         }
 125     }
 126
 127     return false;
 128 }
 129
 130 bool
 131 StringToInt64(const char *s, int64_t &result, const char **p, int base)
 132 {
 133     if (s) {
 134         char *ptr = 0;
 135         const int64_t h = (int64_t) strtoll(s, &ptr, base);
 136
 137         if (ptr != s && ptr) {
 138             result = h;
 139
 140             if (p)
 141                 *p = ptr;
 142
 143             return true;
 144         }
 145     }
 146
 147     return false;
 148 }