rel2abs.c

   1 /*\r
   2 * See the file LICENSE for redistribution information.\r
   3 *\r
   4 * Copyright: 2010- 1stclass.co.jp.  All rights reserved.\r
   5 *\r
   6 * Created by Hajime Kurita\r
   7 */\r
   8 #include <limits.h>\r
   9 #include <stdlib.h>\r
  10 \r
  11 #ifdef __cplusplus\r
  12 #include "1stclass.hpp"\r
  13 \r
  14 string firstclass::rel2abs(const string in_rel_path){\r
  15   char rel_path[2048]="";;\r
  16   safe_strcat(rel_path, in_rel_path.c_str(), sizeof(rel_path));\r
  17   char abs_path[2048]="";\r
  18 #else\r
  19 #include "1stclass.h"\r
  20 int rel2abs(const char *rel_path, char *abs_path){\r
  21 #endif\r
  22   if(rel_path[0]=='/'){\r
  23     safe_strcat(abs_path, rel_path, 2048);\r
  24   }\r
  25   else if(rel_path[0]=='.'){\r
  26     char in_real[512]="";\r
  27     char tail[2048]="";\r
  28     int found=0;\r
  29     int found_i=0;\r
  30     int i=0;\r
  31     int tail_i=0;\r
  32     for(i=0;i<=2048;i++){\r
  33       if(rel_path[i]=='\0'){\r
  34         tail[tail_i]='\0';\r
  35         break;\r
  36       }\r
  37       if(found){\r
  38         tail[tail_i]=rel_path[i];\r
  39         tail_i++;\r
  40       }\r
  41       else{\r
  42         if(rel_path[i] == '.' || rel_path[i] == '/'){\r
  43           in_real[i]=rel_path[i];\r
  44         }\r
  45         else{\r
  46           tail[tail_i]=rel_path[i];\r
  47           tail_i++;\r
  48           found++;\r
  49           found_i=i;\r
  50         }\r
  51       }\r
  52     }\r
  53     in_real[found_i]='\0';\r
  54     if(in_real[found_i-1]=='/'){\r
  55       in_real[found_i-1]='\0';\r
  56     }\r
  57     \r
  58     char real_path[2048]="";\r
  59     realpath(in_real, real_path);\r
  60     safe_strcat(abs_path, real_path, 2048);\r
  61     safe_strcat(abs_path, "/", 2048);\r
  62     safe_strcat(abs_path, tail, 2048);\r
  63   }\r
  64   else{\r
  65     char real_path[2048]="";\r
  66     realpath(".", real_path);\r
  67     safe_strcat(abs_path, real_path, 2048);\r
  68     safe_strcat(abs_path, "/", 2048);\r
  69     safe_strcat(abs_path, rel_path, 2048);\r
  70   }\r
  71   \r
  72 #ifdef __cplusplus\r
  73   string result(abs_path);\r
  74   return result;\r
  75 #endif\r
  76 }\r