flower/file-name.cc

   1 /*
   2   file-name.cc - implement File_name
   3
   4   source file of the Flower Library
   5
   6   (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7   Jan Nieuwenhuizen <janneke@gnu.org>
   8 */
   9
  10 #include "file-name.hh"
  11
  12 #include <cstdio>
  13 #include <cerrno>
  14 using namespace std;
  15
  16 #include "config.hh"
  17
  18 #if HAVE_SYS_STAT_H
  19 #include <sys/stat.h>
  20 #endif
  21
  22 #ifdef __CYGWIN__
  23 #include <sys/cygwin.h>
  24 #endif
  25
  26 /* We don't have multiple roots, set this to '\0'? */
  27 #ifndef ROOTSEP
  28 #define ROOTSEP ':'
  29 #endif
  30
  31 #ifndef DIRSEP
  32 #define DIRSEP '/'
  33 #endif
  34
  35 #ifndef EXTSEP
  36 #define EXTSEP '.'
  37 #endif
  38
  39 #ifdef __CYGWIN__
  40 static String
  41 dos_to_posix (String file_name)
  42 {
  43   char buf[PATH_MAX] = "";
  44   char *s = file_name.get_copy_str0 ();
  45   /* ugh: char const* argument gets modified.  */
  46   int fail = cygwin_conv_to_posix_path (s, buf);
  47   delete s;
  48   if (!fail)
  49     return buf;
  50   return file_name;
  51 }
  52 #endif /* __CYGWIN__ */
  53
  54 #ifdef __MINGW32__
  55 /** Use slash as directory separator.  On Windows, they can pretty
  56     much be exchanged.  */
  57 static String
  58 slashify (String file_name)
  59 {
  60   file_name.substitute ('\\', '/');
  61   file_name.substitute ("//", "/");
  62   return file_name;
  63 }
  64 #endif /* __MINGW32__ */
  65
  66 /* Join components to full file_name. */
  67 String
  68 File_name::to_string () const
  69 {
  70   String s;
  71   if (!root_.is_empty ())
  72     s = root_ + ::to_string (ROOTSEP);
  73   if (!dir_.is_empty ())
  74     {
  75       s += dir_;
  76       if (!base_.is_empty () || !ext_.is_empty ())
  77         s += ::to_string (DIRSEP);
  78     }
  79   s += base_;
  80   if (!ext_.is_empty ())
  81     s += ::to_string (EXTSEP) + ext_;
  82   return s;
  83 }
  84
  85 File_name::File_name (String file_name)
  86 {
  87 #ifdef __CYGWIN__
  88   /* All system functions would work, even if we do not convert to
  89      posix file_name, but we would think that \foe\bar\baz.ly is in
  90      the cwd.  */
  91   file_name = dos_to_posix (file_name);
  92 #endif
  93 #ifdef __MINGW32__
  94   file_name = slashify (file_name);
  95 #endif
  96
  97   int i = file_name.index (ROOTSEP);
  98   if (i >= 0)
  99     {
 100       root_ = file_name.left_string (i);
 101       file_name = file_name.right_string (file_name.length () - i - 1);
 102     }
 103
 104   i = file_name.index_last (DIRSEP);
 105   if (i >= 0)
 106     {
 107       dir_ = file_name.left_string (i);
 108       file_name = file_name.right_string (file_name.length () - i - 1);
 109     }
 110
 111   i = file_name.index_last ('.');
 112   if (i >= 0)
 113     {
 114       base_ = file_name.left_string (i);
 115       ext_ = file_name.right_string (file_name.length () - i - 1);
 116     }
 117   else
 118     base_ = file_name;
 119 }