flower/path.cc

   1 /*
   2    path.cc - manipulation of paths and filenames.
   3 */
   4 #include <stdio.h>
   5 #include "path.hh"
   6 #include "flower-debug.hh"
   7
   8 #ifndef PATHSEP
   9 #define PATHSEP '/'
  10 #endif
  11
  12 /**
  13    @param path the original full filename
  14    @return 4 components of the path. They can be empty
  15 */
  16 void
  17 split_path (String path,
  18            String &drive, String &dirs, String &filebase, String &extension)
  19 {
  20   // peel off components, one by one.
  21   int di = path.index_i (':');
  22   if (di >= 0)
  23         {
  24         drive = path.left_str (di + 1);
  25         path = path.right_str (path.len() - di -1);
  26           }
  27   else
  28         drive = "";
  29
  30   di = path.index_last_i (PATHSEP);
  31   if (di >=0)
  32         {
  33         dirs = path.left_str (di + 1);
  34         path = path.right_str (path.len()-di -1);
  35           }
  36   else
  37         dirs = "";
  38
  39   di = path.index_last_i ('.');
  40   if (di >= 0)
  41         {
  42         filebase = path.left_str (di);
  43         extension =path.right_str (path.len()-di);
  44           }
  45   else
  46         {
  47         extension = "";
  48         filebase = path;
  49           }
  50 }
  51
  52 /** find a file.
  53   It will search in the current dir, in the construction-arg, and
  54   in any other added path, in this order.
  55   */
  56 String
  57 File_path::find (String nm) const
  58
  59 {
  60   fdebug << "looking for " << nm << ": ";
  61   if (!nm.length_i() || (nm == "-") )
  62         return nm;
  63   for (int i=0; i < size(); i++)
  64     {
  65
  66          String path  = elem(i);
  67          if (path.length_i() )
  68              path += "/";
  69
  70          path += nm;
  71
  72          fdebug << path << "? ";
  73          FILE *f = fopen (path.ch_C(), "r"); // ugh!
  74          if (f)
  75            {
  76              fdebug << "found\n";
  77              fclose (f);
  78              return path;
  79            }
  80      }
  81   fdebug << "\n";
  82   return "";
  83 }