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/*
file-name.cc - implement File_name
source file of the Flower Library
(c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
Jan Nieuwenhuizen <janneke@gnu.org>
*/
#include "file-name.hh"
#include <cstdio>
#include <cerrno>
#include <unistd.h>
#include <limits.h>
using namespace std;
#include "config.hh"
#if HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#ifdef __CYGWIN__
#include <sys/cygwin.h>
#endif
#ifndef ROOTSEP
#define ROOTSEP ':'
#endif
#ifndef DIRSEP
#define DIRSEP '/'
#endif
#ifndef EXTSEP
#define EXTSEP '.'
#endif
#ifdef __CYGWIN__
static string
dos_to_posix (string file_name)
{
char buf[PATH_MAX] = "";
char s[PATH_MAX] = {0};
file_name.copy (s, PATH_MAX - 1);
/* ugh: char const* argument gets modified. */
int fail = cygwin_conv_to_posix_path (s, buf);
if (!fail)
return buf;
return file_name;
}
#endif /* __CYGWIN__ */
/** Use slash as directory separator. On Windows, they can pretty
much be exchanged. */
#if 0
static /* avoid warning */
#endif
string
slashify (string file_name)
{
replace_all (&file_name, '\\', '/');
replace_all (&file_name, string ("//"), "/");
return file_name;
}
string
dir_name (string const file_name)
{
string s = file_name;
s = slashify (s);
ssize n = s.length ();
if (n && s[n - 1] == '/')
s[n - 1] = 0;
if (s.rfind ('/') != NPOS)
s = s.substr (0, s.rfind ('/'));
else
s = "";
return s;
}
string
get_working_directory ()
{
char cwd[PATH_MAX];
getcwd (cwd, PATH_MAX);
return string (cwd);
}
/* Join components to full file_name. */
string
File_name::dir_part () const
{
string s;
if (!root_.empty ())
s = root_ + ::to_string (ROOTSEP);
if (!dir_.empty ())
{
s += dir_;
}
return s;
}
string
File_name::file_part () const
{
string s;
s = base_;
if (!ext_.empty ())
s += ::to_string (EXTSEP) + ext_;
return s;
}
string
File_name::to_string () const
{
string d = dir_part ();
string f = file_part ();
if (!f.empty ()
&& !dir_.empty())
{
d += ::to_string (DIRSEP);
}
return d + f;
}
File_name::File_name (string file_name)
{
#ifdef __CYGWIN__
/* All system functions would work, even if we do not convert to
posix file_name, but we would think that \foe\bar\baz.ly is in
the cwd. */
file_name = dos_to_posix (file_name);
#endif
#ifdef __MINGW32__
file_name = slashify (file_name);
#endif
ssize i = file_name.find (ROOTSEP);
if (i != NPOS)
{
root_ = file_name.substr (0, i);
file_name = file_name.substr (i + 1);
}
i = file_name.rfind (DIRSEP);
if (i != NPOS)
{
dir_ = file_name.substr (0, i);
file_name = file_name.substr (i + 1);
}
i = file_name.rfind ('.');
if (i != NPOS)
{
base_ = file_name.substr (0, i);
ext_ = file_name.substr (i + 1);
}
else
base_ = file_name;
}
bool
File_name::is_absolute () const
{
/*
Hmm. Is c:foo absolute?
*/
return (dir_.length () && dir_[0] == DIRSEP) || root_.length ();
}
File_name
File_name::canonicalized () const
{
File_name c = *this;
replace_all (&c.dir_, string ("//"), string ("/"));
vector<string> components = string_split (c.dir_, '/');
vector<string> new_components;
for (vsize i = 0; i < components.size (); i++)
{
if (components[i] == "..")
new_components.pop_back ();
else
new_components.push_back (components[i]);
}
c.dir_ = string_join (new_components, "/");
return c;
}
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