X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Ffs%2Futils.cpp;fp=source%2Ffs%2Futils.cpp;h=694a8f12a6c6c67b4f77dd89e0e9a8168d1fcf1e;hb=af94bc926e301e9b871dc18662b4fa6e5614fdbf;hp=0000000000000000000000000000000000000000;hpb=fa77438b62207466c48620604c8cc34931080936;p=libs%2Fcore.git

diff --git a/source/fs/utils.cpp b/source/fs/utils.cpp
new file mode 100644
index 0000000..694a8f1
--- /dev/null
+++ b/source/fs/utils.cpp
@@ -0,0 +1,185 @@
+/* $Id$
+
+This file is part of libmspfs
+Copyright © 2006-2008  Mikko Rasa, Mikkosoft Productions
+Distributed under the LGPL
+*/
+
+#include <cerrno>
+#include <cstdio>
+#include <msp/core/except.h>
+#ifndef WIN32
+#include <fnmatch.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 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);
+}
+
+Path fix_case(const Path &path)
+{
+	bool found = true;
+	Path result;
+	for(Path::Iterator i=path.begin(); i!=path.end(); ++i)
+	{
+		if(!found || *i=="/")
+			result /= *i;
+		else
+		{
+			list<string> files;
+			if(result.size())
+				files = list_files(result);
+			else
+				files = list_files(".");
+
+			found = false;
+			for(list<string>::iterator j=files.begin(); (j!=files.end() && !found); ++j)
+				if(!strcasecmp(*j,*i))
+				{
+					result /= *j;
+					found = true;
+				}
+
+			if(!found)
+				result /= *i;
+		}
+	}
+
+	return result;
+}
+
+Path readlink(const Path &link)
+{
+#ifdef WIN32
+	(void)link;
+	throw Exception("No symbolic links on win32");
+#else
+	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
+}
+
+Path realpath(const Path &path)
+{
+#ifdef WIN32
+	if(path.is_absolute())
+		return path;
+	else
+		return getcwd()/path;
+#else
+	list<string> queue(path.begin(), path.end());
+	if(!path.is_absolute())
+	{
+		Path cwd = getcwd();
+		queue.insert(queue.begin(), cwd.begin(), cwd.end());
+	}
+
+	Path real;
+	unsigned n_links = 0;
+	while(!queue.empty())
+	{
+		Path next = real/queue.front();
+		queue.pop_front();
+
+		struct stat st = lstat(next);
+		if(S_ISLNK(st.st_mode))
+		{
+			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());
+		}
+		else
+			real = next;
+	}
+
+	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);
+}
+
+void unlink(const Path &path)
+{
+	if(::unlink(path.str().c_str())==-1)
+		throw SystemError("unlink failed", errno);
+}
+
+Path relative(const Path &path, const Path &base)
+{
+	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 descendant_depth(const Path &path, const Path &parent)
+{
+	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 FS
+} // namespace Msp