-/*
-This file is part of libmsppath
-Copyright © 2006 Mikko Rasa, Mikkosoft Productions
+/* $Id$
+
+This file is part of libmspfs
+Copyright © 2006-2008 Mikko Rasa, Mikkosoft Productions
Distributed under the LGPL
*/
-#include <dirent.h>
-#include <sys/stat.h>
-#include <errno.h>
+
+#include <cerrno>
+#include <cstdio>
+#include <msp/core/except.h>
+#ifndef WIN32
#include <fnmatch.h>
-#include <msp/strutils.h>
+#else
+#include <msp/strings/glob.h>
+#endif
+#include <msp/strings/utils.h>
+#include "dir.h"
#include "path.h"
+#include "stat.h"
#include "utils.h"
using namespace std;
namespace Msp {
-namespace Path {
+namespace FS {
+
+string basename(const Path &p)
+{
+ return p[-1];
+}
+
+Path dirname(const Path &p)
+{
+ if(p.size()==1)
+ {
+ if(p.is_absolute())
+ return p;
+ return ".";
+ }
+ return p.subpath(0, p.size()-1);
+}
+
+string basepart(const string &fn)
+{
+ unsigned dot = fn.rfind('.');
+ return fn.substr(0, dot);
+}
+
+string extpart(const string &fn)
+{
+ string::size_type dot = fn.rfind('.');
+ if(dot==string::npos)
+ return string();
+ return fn.substr(dot);
+}
-/**
-Fixes the case of the given path to match files / directories on the
-filesystem. Intended to be used in programs that need to interact with
-emulated Windows programs.
-*/
Path fix_case(const Path &path)
{
- bool found=true;
+ bool found = true;
Path result;
- for(Path::iterator i=path.begin(); i!=path.end(); ++i)
+ for(Path::Iterator i=path.begin(); i!=path.end(); ++i)
{
if(!found || *i=="/")
- result/=*i;
+ result /= *i;
else
{
list<string> files;
if(result.size())
- files=list_files(result);
+ files = list_files(result);
else
- files=list_files(".");
+ files = list_files(".");
- found=false;
+ found = false;
for(list<string>::iterator j=files.begin(); (j!=files.end() && !found); ++j)
if(!strcasecmp(*j,*i))
{
- result/=*j;
- found=true;
+ result /= *j;
+ found = true;
}
if(!found)
- result/=*i;
+ result /= *i;
}
}
return result;
}
-int mkpath(const Path &path, int mode)
+Path readlink(const Path &link)
{
- Path p;
- for(Path::iterator i=path.begin(); i!=path.end(); ++i)
- {
- p/=*i;
-#ifdef WIN32
- if(p.size()==1 && is_windows_drive(*i)) continue;
-#endif
- struct stat st;
- int err=stat(p.str().c_str(),&st);
- if(err==0)
- {
- if(!S_ISDIR(st.st_mode))
- {
- errno=EEXIST;
- return -1;
- }
- continue;
- }
- else if(errno!=ENOENT)
- return -1;
- else
- {
#ifdef WIN32
- // The win32 version of this function doesn't take the mode argument. Go figure.
- err=mkdir(p.str().c_str());
+ (void)link;
+ throw Exception("No symbolic links on win32");
#else
- err=mkdir(p.str().c_str(),mode);
+ char buf[4096];
+ int len = ::readlink(link.str().c_str(), buf, sizeof(buf));
+ if(len==-1)
+ throw SystemError("readlink failed", errno);
+ return string(buf, len);
#endif
- if(err==-1) return -1;
- }
- }
-
- return 0;
}
-int rmdir(const Path &path, bool recursive)
+Path realpath(const Path &path)
{
- if(recursive)
+#ifdef WIN32
+ if(path.is_absolute())
+ return path;
+ else
+ return getcwd()/path;
+#else
+ list<string> queue(path.begin(), path.end());
+ if(!path.is_absolute())
{
- list<string> files=list_files(path);
- for(list<string>::iterator i=files.begin(); i!=files.end(); ++i)
- {
- Path p=path/ *i;
- struct stat st;
- stat(p.str().c_str(),&st);
- int err=0;
- if(S_ISDIR(st.st_mode))
- err=rmdir(p,true);
- else
- err=unlink(p.str().c_str());
- if(err) return err;
- }
+ Path cwd = getcwd();
+ queue.insert(queue.begin(), cwd.begin(), cwd.end());
}
- return rmdir(path.str().c_str());
-}
-/**
-Lists all files in a directory except the implied . and .. entries.
-*/
-list<string> list_files(const Path &path)
-{
- list<string> result;
- DIR *dir=opendir(path.str().c_str());
- if(dir)
+ Path real;
+ unsigned n_links = 0;
+ while(!queue.empty())
{
- while(dirent *de=readdir(dir))
+ Path next = real/queue.front();
+ queue.pop_front();
+
+ struct stat st = lstat(next);
+ if(S_ISLNK(st.st_mode))
{
- const char *fn=de->d_name;
- if(fn[0]=='.' && (fn[1]==0 || (fn[1]=='.' && fn[2]==0))) continue;
- result.push_back(fn);
+ if(++n_links>64)
+ throw Exception("Ludicrous amount of symlinks detected in realpath, giving up");
+ Path link = readlink(next);
+ queue.insert(queue.begin(), link.begin(), link.end());
}
- closedir(dir);
+ else
+ real = next;
}
- return result;
+
+ return real;
+#endif
+}
+
+void rename(const Path &from, const Path &to)
+{
+ if(::rename(from.str().c_str(), to.str().c_str())==-1)
+ throw SystemError("rename failed", errno);
}
-bool exists(const Path &path)
+void unlink(const Path &path)
{
- struct stat st;
- return !stat(path.str().c_str(),&st);
+ if(::unlink(path.str().c_str())==-1)
+ throw SystemError("unlink failed", errno);
}
-Filename splitext(const string &fn)
+Path relative(const Path &path, const Path &base)
{
- Filename result;
- unsigned dot=fn.rfind('.');
- result.base=fn.substr(0,dot);
- if(dot!=string::npos)
- result.ext=fn.substr(dot);
+ Path::Iterator i = path.begin();
+ Path::Iterator j = base.begin();
+ for(; (i!=path.end() && j!=base.end() && *i==*j); ++i, ++j) ;
+
+ Path result;
+ for(; j!=base.end(); ++j)
+ result /= "..";
+ for(; i!=path.end(); ++i)
+ result /= *i;
+
return result;
}
-int fnmatch(const string &pat, const Path &fn)
+int descendant_depth(const Path &path, const Path &parent)
{
- return ::fnmatch(pat.c_str(), fn.str().c_str(), FNM_PATHNAME);
+ Path::Iterator i = path.begin();
+ Path::Iterator j = parent.begin();
+ for(; (i!=path.end() && j!=parent.end() && *i==*j); ++i, ++j) ;
+
+ if(j!=parent.end())
+ return -1;
+
+ int result = 0;
+ for(; i!=path.end(); ++i)
+ ++result;
+
+ return result;
}
-} // namespace Path
+} // namespace FS
} // namespace Msp
projects / libs / core.git / blobdiff