flower/path.cc

   1 /*
   2    path.cc - manipulation of paths and filenames.
   3 */
   4 #include <stdio.h>
   5 #include "path.hh"
   6
   7 #ifndef PATHSEP
   8 #define PATHSEP '/'
   9 #endif
  10
  11 /**
  12    @param path the original full filename
  13    @return 4 components of the path. They can be empty
  14 */
  15 void
  16 split_path(String path,
  17            String &drive, String &dirs, String &filebase, String &extension)
  18 {
  19     // peel off components, one by one.
  20     int di = path.pos(':');
  21     if (di)
  22         {
  23         drive = path.left(di);
  24         path = path.right(path.len() - di);
  25         }
  26     else
  27         drive = "";
  28
  29     di = path.lastPos(PATHSEP);
  30     if (di)
  31         {
  32         dirs = path.left(di);
  33         path = path.right(path.len()-di);
  34         }
  35     else
  36         dirs = "";
  37
  38     di = path.lastPos('.');
  39     if (di)
  40         {
  41         di --; // don't forget '.'
  42         filebase = path.left(di);
  43         extension =path.right(path.len()-di);
  44         }
  45     else
  46         {
  47         extension = "";
  48         filebase = path;
  49         }
  50 }
  51
  52 File_path::File_path(String pref)
  53 {
  54     add(".");
  55     add(pref);
  56 }
  57
  58
  59 /** find a file.
  60   It will search in the current dir, in the construction-arg, and
  61   in any other added path, in this order.
  62   */
  63 String
  64 File_path::find(String nm)
  65 {
  66      for (int i=0; i < size(); i++) {
  67          String path  = (*this)[i];
  68          path+= "/"+nm;
  69
  70
  71          FILE *f = fopen(path, "r"); // ugh!
  72          if (f) {
  73              fclose(f);
  74              return path;
  75          }
  76      }
  77      return "";
  78 }