src/buffer2array.c

   1 /* the Music Player Daemon (MPD)
   2  * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
   3  * This project's homepage is: http://www.musicpd.org
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19 #include "buffer2array.h"
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <ctype.h>
  25
  26
  27 static inline
  28 int
  29 isWhiteSpace(char c)
  30 {
  31         return (c == ' ' || c == '\t');
  32 }
  33
  34 int buffer2array(char *buffer, char *array[], const int max)
  35 {
  36         int i = 0;
  37         char *c = buffer;
  38
  39         while (*c != '\0' && i < max) {
  40                 if (*c == '\"') {
  41                         array[i++] = ++c;
  42                         while (*c != '\0') {
  43                                 if (*c == '\"') {
  44                                         *(c++) = '\0';
  45                                         break;
  46                                 }
  47                                 else if (*(c++) == '\\' && *c != '\0') {
  48                                         memmove(c - 1, c, strlen(c) + 1);
  49                                 }
  50                         }
  51                 } else {
  52                         while (isWhiteSpace(*c))
  53                                 ++c;
  54                         array[i++] = c++;
  55                         if (*c == '\0')
  56                                 return i;
  57                         while (!isWhiteSpace(*c) && *c != '\0')
  58                                 ++c;
  59                 }
  60                 if (*c == '\0')
  61                         return i;
  62                 *(c++) = '\0';
  63                 while (isWhiteSpace(*c))
  64                         ++c;
  65         }
  66         return i;
  67 }
  68
  69 #ifdef UNIT_TEST
  70
  71 #include <stdio.h>
  72 #include <string.h>
  73 #include <assert.h>
  74
  75 int main()
  76 {
  77         char *a[4] = { NULL };
  78         char *b;
  79         int max;
  80
  81         b = strdup("lsinfo \"/some/dir/name \\\"test\\\"\"");
  82         max = buffer2array(b, a, 4);
  83         assert( !strcmp("lsinfo", a[0]) );
  84         assert( !strcmp("/some/dir/name \"test\"", a[1]) );
  85         assert( !a[2] );
  86
  87         b = strdup("lsinfo \"/some/dir/name \\\"test\\\" something else\"");
  88         max = buffer2array(b, a, 4);
  89         assert( !strcmp("lsinfo", a[0]) );
  90         assert( !strcmp("/some/dir/name \"test\" something else", a[1]) );
  91         assert( !a[2] );
  92
  93         b = strdup("lsinfo \"/some/dir\\\\name\"");
  94         max = buffer2array(b, a, 4);
  95         assert( !strcmp("lsinfo", a[0]) );
  96         assert( !strcmp("/some/dir\\name", a[1]) );
  97         assert( !a[2] );
  98
  99         b = strdup("lsinfo \"/some/dir name\"");
 100         max = buffer2array(b, a, 4);
 101         assert( !strcmp("lsinfo", a[0]) );
 102         assert( !strcmp("/some/dir name", a[1]) );
 103         assert( !a[2] );
 104
 105         b = strdup("lsinfo \"\\\"/some/dir\\\"\"");
 106         max = buffer2array(b, a, 4);
 107         assert( !strcmp("lsinfo", a[0]) );
 108         assert( !strcmp("\"/some/dir\"", a[1]) );
 109         assert( !a[2] );
 110
 111         b = strdup("lsinfo \"\\\"/some/dir\\\" x\"");
 112         max = buffer2array(b, a, 4);
 113         assert( !strcmp("lsinfo", a[0]) );
 114         assert( !strcmp("\"/some/dir\" x", a[1]) );
 115         assert( !a[2] );
 116
 117         b = strdup("lsinfo \"single quote\\'d from php magicquotes\"");
 118         max = buffer2array(b, a, 4);
 119         assert( !strcmp("lsinfo", a[0]) );
 120         assert( !strcmp("single quote\'d from php magicquotes", a[1]) );
 121         assert( !a[2] );
 122
 123         b = strdup("lsinfo \"double quote\\\"d from php magicquotes\"");
 124         max = buffer2array(b, a, 4);
 125         assert( !strcmp("lsinfo", a[0]) );
 126         assert( !strcmp("double quote\"d from php magicquotes", a[1]) );
 127         assert( !a[2] );
 128
 129         return 0;
 130 }
 131
 132 #endif