src/Sockets/Parse.cpp

   1 /** \file Parse.cpp - parse a string
   2  **
   3  **     Written: 1999-Feb-10 grymse@alhem.net
   4  **/
   5
   6 /*
   7 Copyright (C) 1999-2007  Anders Hedstrom
   8
   9 This library is made available under the terms of the GNU GPL.
  10
  11 If you would like to use this library in a closed-source application,
  12 a separate license agreement is available. For information about
  13 the closed-source license agreement for the C++ sockets library,
  14 please visit http://www.alhem.net/Sockets/license.html and/or
  15 email license@alhem.net.
  16
  17 This program is free software; you can redistribute it and/or
  18 modify it under the terms of the GNU General Public License
  19 as published by the Free Software Foundation; either version 2
  20 of the License, or (at your option) any later version.
  21
  22 This program is distributed in the hope that it will be useful,
  23 but WITHOUT ANY WARRANTY; without even the implied warranty of
  24 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25 GNU General Public License for more details.
  26
  27 You should have received a copy of the GNU General Public License
  28 along with this program; if not, write to the Free Software
  29 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  30 */
  31 #include <stdlib.h>
  32 #include <string.h>
  33
  34 #include "Parse.h"
  35
  36
  37 #ifdef SOCKETS_NAMESPACE
  38 namespace SOCKETS_NAMESPACE {
  39 #endif
  40
  41
  42 /* implementation of class Parse */
  43
  44 Parse::Parse()
  45 :pa_the_str("")
  46 ,pa_splits("")
  47 ,pa_ord("")
  48 ,pa_the_ptr(0)
  49 ,pa_breakchar(0)
  50 ,pa_enable(0)
  51 ,pa_disable(0)
  52 ,pa_nospace(0)
  53 ,pa_quote(false)
  54 {
  55 }
  56
  57 Parse::Parse(const std::string&s)
  58 :pa_the_str(s)
  59 ,pa_splits("")
  60 ,pa_ord("")
  61 ,pa_the_ptr(0)
  62 ,pa_breakchar(0)
  63 ,pa_enable(0)
  64 ,pa_disable(0)
  65 ,pa_nospace(0)
  66 ,pa_quote(false)
  67 {
  68 }
  69
  70 Parse::Parse(const std::string&s,const std::string&sp)
  71 :pa_the_str(s)
  72 ,pa_splits(sp)
  73 ,pa_ord("")
  74 ,pa_the_ptr(0)
  75 ,pa_breakchar(0)
  76 ,pa_enable(0)
  77 ,pa_disable(0)
  78 ,pa_nospace(0)
  79 ,pa_quote(false)
  80 {
  81 }
  82
  83 Parse::Parse(const std::string&s,const std::string&sp,short nospace)
  84 :pa_the_str(s)
  85 ,pa_splits(sp)
  86 ,pa_ord("")
  87 ,pa_the_ptr(0)
  88 ,pa_breakchar(0)
  89 ,pa_enable(0)
  90 ,pa_disable(0)
  91 ,pa_nospace(1)
  92 ,pa_quote(false)
  93 {
  94 }
  95
  96
  97 Parse::~Parse()
  98 {
  99 }
 100
 101 #define C ((pa_the_ptr<pa_the_str.size()) ? pa_the_str[pa_the_ptr] : 0)
 102
 103 short Parse::issplit(const char c)
 104 {
 105         for (size_t i = 0; i < pa_splits.size(); i++)
 106                 if (pa_splits[i] == c)
 107                         return 1;
 108         return 0;
 109 }
 110
 111 void Parse::getsplit()
 112 {
 113         size_t x;
 114
 115         if (C == '=')
 116         {
 117                 x = pa_the_ptr++;
 118         } else
 119         {
 120                 while (C && (issplit(C)))
 121                         pa_the_ptr++;
 122                 x = pa_the_ptr;
 123                 while (C && !issplit(C) && C != '=')
 124                         pa_the_ptr++;
 125         }
 126         if (x == pa_the_ptr && C == '=')
 127                 pa_the_ptr++;
 128         pa_ord = (x < pa_the_str.size()) ? pa_the_str.substr(x,pa_the_ptr - x) : "";
 129 }
 130
 131 std::string Parse::getword()
 132 {
 133         size_t x;
 134         int disabled = 0;
 135         int quote = 0;
 136         int rem = 0;
 137
 138         if (pa_nospace)
 139         {
 140                 while (C && issplit(C))
 141                         pa_the_ptr++;
 142                 x = pa_the_ptr;
 143                 while (C && !issplit(C) && (C != pa_breakchar || !pa_breakchar || disabled))
 144                 {
 145                         if (pa_breakchar && C == pa_disable)
 146                                 disabled = 1;
 147                         if (pa_breakchar && C == pa_enable)
 148                                 disabled = 0;
 149                         if (pa_quote && C == '"')
 150                                 quote = 1;
 151                         pa_the_ptr++;
 152                         while (quote && C && C != '"')
 153                         {
 154                                 pa_the_ptr++;
 155                         }
 156                         if (pa_quote && C == '"')
 157                         {
 158                                 pa_the_ptr++;
 159                         }
 160                         quote = 0;
 161                 }
 162         } else
 163         {
 164                 if (C == pa_breakchar && pa_breakchar)
 165                 {
 166                         x = pa_the_ptr++;
 167                         rem = 1;
 168                 } else
 169                 {
 170                         while (C && (C == ' ' || C == 9 || C == 13 || C == 10 || issplit(C)))
 171                                 pa_the_ptr++;
 172                         x = pa_the_ptr;
 173                         while (C && C != ' ' && C != 9 && C != 13 && C != 10 && !issplit(C) &&
 174                          (C != pa_breakchar || !pa_breakchar || disabled))
 175                         {
 176                                 if (pa_breakchar && C == pa_disable)
 177                                         disabled = 1;
 178                                 if (pa_breakchar && C == pa_enable)
 179                                         disabled = 0;
 180                                 if (pa_quote && C == '"')
 181                                 {
 182                                         quote = 1;
 183                                 pa_the_ptr++;
 184                                 while (quote && C && C != '"')
 185                                 {
 186                                         pa_the_ptr++;
 187                                 }
 188                                 if (pa_quote && C == '"')
 189                                 {
 190                                         pa_the_ptr++;
 191                                 }
 192                                 }
 193                                 else
 194                                         pa_the_ptr++;
 195                                 quote = 0;
 196                         }
 197                         pa_the_ptr++;
 198                         rem = 1;
 199                 }
 200                 if (x == pa_the_ptr && C == pa_breakchar && pa_breakchar)
 201                         pa_the_ptr++;
 202         }
 203         if (x < pa_the_str.size())
 204         {
 205                 pa_ord = pa_the_str.substr(x,pa_the_ptr - x - rem);
 206         }
 207         else
 208         {
 209                 pa_ord = "";
 210         }
 211         return pa_ord;
 212 }
 213
 214 void Parse::getword(std::string&s)
 215 {
 216         s = Parse::getword();
 217 }
 218
 219 void Parse::getsplit(std::string&s)
 220 {
 221         Parse::getsplit();
 222         s = pa_ord;
 223 }
 224
 225 void Parse::getword(std::string&s,std::string&fill,int l)
 226 {
 227         Parse::getword();
 228         s = "";
 229         while (s.size() + pa_ord.size() < (size_t)l)
 230                 s += fill;
 231         s += pa_ord;
 232 }
 233
 234 std::string Parse::getrest()
 235 {
 236         std::string s;
 237         while (C && (C == ' ' || C == 9 || issplit(C)))
 238                 pa_the_ptr++;
 239         s = (pa_the_ptr < pa_the_str.size()) ? pa_the_str.substr(pa_the_ptr) : "";
 240         return s;
 241 }
 242
 243 void Parse::getrest(std::string&s)
 244 {
 245         while (C && (C == ' ' || C == 9 || issplit(C)))
 246                 pa_the_ptr++;
 247         s = (pa_the_ptr < pa_the_str.size()) ? pa_the_str.substr(pa_the_ptr) : "";
 248 }
 249
 250 long Parse::getvalue()
 251 {
 252         Parse::getword();
 253         return atol(pa_ord.c_str());
 254 }
 255
 256 void Parse::setbreak(const char c)
 257 {
 258         pa_breakchar = c;
 259 }
 260
 261 int Parse::getwordlen()
 262 {
 263         size_t x,y = pa_the_ptr,len;
 264
 265         if (C == pa_breakchar && pa_breakchar)
 266         {
 267                 x = pa_the_ptr++;
 268         } else
 269         {
 270                 while (C && (C == ' ' || C == 9 || C == 13 || C == 10 || issplit(C)))
 271                         pa_the_ptr++;
 272                 x = pa_the_ptr;
 273                 while (C && C != ' ' && C != 9 && C != 13 && C != 10 && !issplit(C) && (C != pa_breakchar || !pa_breakchar))
 274                         pa_the_ptr++;
 275         }
 276         if (x == pa_the_ptr && C == pa_breakchar && pa_breakchar)
 277                 pa_the_ptr++;
 278         len = pa_the_ptr - x;
 279         pa_the_ptr = y;
 280         return (int)len;
 281 }
 282
 283 int Parse::getrestlen()
 284 {
 285         size_t y = pa_the_ptr;
 286         size_t len;
 287
 288         while (C && (C == ' ' || C == 9 || issplit(C)))
 289                 pa_the_ptr++;
 290         len = strlen(pa_the_str.c_str() + pa_the_ptr);
 291         pa_the_ptr = y;
 292         return (int)len;
 293 }
 294
 295 void Parse::getline()
 296 {
 297         size_t x;
 298
 299         x = pa_the_ptr;
 300         while (C && C != 13 && C != 10)
 301                 pa_the_ptr++;
 302         pa_ord = (x < pa_the_str.size()) ? pa_the_str.substr(x,pa_the_ptr - x) : "";
 303         if (C == 13)
 304                 pa_the_ptr++;
 305         if (C == 10)
 306                 pa_the_ptr++;
 307 }
 308
 309 void Parse::getline(std::string&s)
 310 {
 311         getline();
 312         s = pa_ord;
 313 }
 314
 315 /* end of implementation of class Parse */
 316 /***************************************************/
 317 #ifdef SOCKETS_NAMESPACE
 318 }
 319 #endif
 320