X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;ds=sidebyside;f=source%2Ffs%2Fdir.cpp;fp=source%2Ffs%2Fdir.cpp;h=ad2e013085024fbbcfaf54d3cf154f0a256711a2;hb=af94bc926e301e9b871dc18662b4fa6e5614fdbf;hp=0000000000000000000000000000000000000000;hpb=fa77438b62207466c48620604c8cc34931080936;p=libs%2Fcore.git

diff --git a/source/fs/dir.cpp b/source/fs/dir.cpp
new file mode 100644
index 0000000..ad2e013
--- /dev/null
+++ b/source/fs/dir.cpp
@@ -0,0 +1,229 @@
+/* $Id$
+
+This file is part of libmspfs
+Copyright © 2006-2008  Mikko Rasa, Mikkosoft Productions
+Distributed under the LGPL
+*/
+
+#include <cstdlib>
+#include <cerrno>
+#include <dirent.h>
+#include <sys/stat.h>
+#ifdef WIN32
+#include <shlobj.h>
+#endif
+#include <msp/core/except.h>
+#include <msp/strings/regex.h>
+#include <msp/strings/utils.h>
+#include "dir.h"
+#include "path.h"
+#include "stat.h"
+#include "utils.h"
+
+using namespace std;
+
+namespace Msp {
+namespace FS {
+
+namespace
+{
+
+/**
+Helper function to determine the location of the program's executable.  Caches
+the last result to cut down filesystem access with repeated calls.
+*/
+const Path &get_bin_dir(const string &argv0)
+{
+	static string last_argv0;
+	static Path bin_dir;
+
+	if(!(argv0==last_argv0))
+	{
+		Path exe;
+		if(argv0.find('/')==string::npos)
+		{
+			const char *path = getenv("PATH");
+			vector<string> dirs = split(path, ':');
+			for(vector<string>::const_iterator i=dirs.begin(); i!=dirs.end(); ++i)
+				if(exists(Path(*i)/argv0))
+				{
+					exe = realpath(Path(*i)/argv0);
+					break;
+				}
+		}
+		else
+			exe = realpath(argv0);
+
+		last_argv0 = argv0;
+		bin_dir = dirname(exe);
+	}
+
+	return bin_dir;
+}
+
+}
+
+void mkdir(const Path &path, int mode)
+{
+	int err;
+#ifdef WIN32
+	// The win32 version of this function doesn't take the mode argument.  Go figure.
+	(void)mode;
+	err = ::mkdir(path.str().c_str());
+#else
+	err = ::mkdir(path.str().c_str(), mode);
+#endif
+
+	if(err==-1)
+		throw SystemError("mkdir failed", errno);
+}
+
+void mkpath(const Path &path, int mode)
+{
+	Path p;
+	for(Path::Iterator i=path.begin(); i!=path.end(); ++i)
+	{
+		p /= *i;
+#ifdef WIN32
+		if(p.size()==1 && p.is_absolute())
+			continue;
+#endif
+		struct stat st;
+		int err = stat(p, st);
+		if(err==0)
+		{
+			if(!S_ISDIR(st.st_mode))
+				throw Exception("A component exists and is not a directory");
+			continue;
+		}
+		else if(errno!=ENOENT)
+			throw SystemError("stat failed", errno);
+		else
+			mkdir(p, mode);
+	}
+}
+
+void rmdir(const Path &path)
+{
+	if(::rmdir(path.str().c_str())==-1)
+		throw SystemError("rmdir failed", errno);
+}
+
+void rmdirs(const Path &path)
+{
+	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());
+		if(S_ISDIR(st.st_mode))
+			rmdirs(p);
+		else
+			unlink(p);
+	}
+
+	rmdir(path);
+}
+
+list<string> list_files(const Path &path)
+{
+	return list_filtered(path, string());
+}
+
+list<string> list_filtered(const Path &path, const string &filter)
+{
+	Regex r_filter(filter);
+
+	list<string> result;
+	DIR *dir = opendir(path.str().c_str());
+	if(dir)
+	{
+		while(dirent *de = readdir(dir))
+		{
+			const char *fn = de->d_name;
+			if(fn[0]=='.' && (fn[1]==0 || (fn[1]=='.' && fn[2]==0))) 
+				continue;
+			if(r_filter.match(fn))
+				result.push_back(fn);
+		}
+		closedir(dir);
+	}
+
+	return result;
+}
+
+Path getcwd()
+{
+	char buf[1024];
+	return ::getcwd(buf, sizeof(buf));
+}
+
+Path get_home_dir()
+{
+#ifdef WIN32
+	char home[MAX_PATH];
+	if(SHGetFolderPath(0, CSIDL_PERSONAL, 0, 0, home)==S_OK)
+		return home;
+#else
+	const char *home = getenv("HOME");
+	if(home)
+		return home;
+#endif
+	return ".";
+}
+
+Path get_user_data_dir(const string &appname)
+{
+#ifdef WIN32
+	char datadir[MAX_PATH];
+	if(SHGetFolderPath(0, CSIDL_LOCAL_APPDATA, 0, 0, datadir)==S_OK)
+		return Path(datadir)/appname;
+	return ".";
+#else
+	return get_home_dir()/("."+appname);
+#endif
+}
+
+Path get_sys_conf_dir(const string &argv0)
+{
+	Path dir = get_bin_dir(argv0);
+
+	if(dir[-1]=="bin" || dir[-1]=="sbin")
+	{
+		dir /= "..";
+		if(dir[-1]=="usr")
+			dir /= "..";
+		return dir/"etc";
+	}
+	else
+		return dir;
+}
+
+Path get_sys_data_dir(const string &argv0, const string &appname)
+{
+	Path dir = get_bin_dir(argv0);
+
+	if(dir[-1]=="bin" || dir[-1]=="sbin")
+		return dir/".."/"share"/appname;
+	else
+		return dir;
+}
+
+Path get_sys_lib_dir(const string &argv0, const string &appname)
+{
+	Path dir = get_bin_dir(argv0);
+
+	if(dir[-1]=="bin" || dir[-1]=="sbin")
+		return dir/".."/"lib"/appname;
+	else
+		return dir;
+}
+
+void chdir(const Path &path)
+{
+	if(::chdir(path.str().c_str())==-1)
+		throw SystemError("chdir failed", errno);
+}
+
+} // namespace FS
+} // namespace Msp