mirror of
https://github.com/lunarmodules/luafilesystem.git
synced 2026-07-25 13:13:07 +00:00
Initial revision
This commit is contained in:
tomas
35
Makefile
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35
Makefile
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# $Id: Makefile,v 1.1 2004/07/27 14:15:24 tomas Exp $
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||||||
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||||||
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T= luafilesystem
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||||||
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||||||
|
include ./config
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||||||
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||||||
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V= 1.0a
|
||||||
|
LIBNAME= lib$T.$V$(LIB_EXT)
|
||||||
|
L= $T.lua
|
||||||
|
TL= t_$T.lua
|
||||||
|
|
||||||
|
SRCS= $T.c
|
||||||
|
OBJS= $T.o
|
||||||
|
|
||||||
|
|
||||||
|
lib: $(LIBNAME)
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||||||
|
|
||||||
|
$(LIBNAME): $(OBJS) $(TL)
|
||||||
|
$(CC) $(CFLAGS) $(LIB_OPTION) -o $(LIBNAME) $(OBJS) $(LIBS)
|
||||||
|
sed -e "s|LIB_NAME|$(LIB_DIR)/$(LIBNAME)|" $(TL) > $L
|
||||||
|
|
||||||
|
$(LUA_DIR)/$L: $L
|
||||||
|
mkdir -p $(LUA_DIR)
|
||||||
|
cp $L $(LUA_DIR)
|
||||||
|
|
||||||
|
install: $(LUA_DIR)/$L $(LIBNAME)
|
||||||
|
mkdir -p $(LIB_DIR)
|
||||||
|
cp $(LIBNAME) $(LIB_DIR)
|
||||||
|
|
||||||
|
clean:
|
||||||
|
rm -f $L $(LIBNAME) $(OBJS)
|
||||||
|
|
||||||
|
dist:
|
||||||
|
mkdir -p $(DIST_DIR)
|
||||||
|
cp config $(SRCS) $T.h $(TL) Makefile $(DIST_DIR)
|
||||||
21
config
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21
config
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|
# Installation directories
|
||||||
|
# System's libraries directory (where Lua libraries are installed)
|
||||||
|
LIB_DIR= /usr/local/lib
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||||||
|
LUA_DIR= /usr/local/lua
|
||||||
|
|
||||||
|
# OS dependent
|
||||||
|
LIB_EXT= .dylib
|
||||||
|
#LIB_EXT= .so
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||||||
|
LIB_OPTION= -dynamiclib #for MacOS X
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||||||
|
#LIB_OPTION= -shared #for Linux
|
||||||
|
|
||||||
|
# Compilation directives
|
||||||
|
# pre-compile and include mod2.lua into mod_lua.c
|
||||||
|
# On FreeBSD systems, the following line should be commented
|
||||||
|
DLLIB= -ldl
|
||||||
|
WARN= -O2 -Wall -fPIC -W -Waggregate-return -Wcast-align -Wmissing-prototypes -Wnested-externs -Wshadow -Wwrite-strings
|
||||||
|
INCS= -I/usr/local/include/lua5
|
||||||
|
LIBS= -L$(LIB_DIR) -llua -llualib -lm $(DLLIB)
|
||||||
|
CFLAGS= $(WARN) $(INCS)
|
||||||
|
CC= gcc
|
||||||
|
|
||||||
114
doc/us/index.html
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114
doc/us/index.html
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|||||||
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<html>
|
||||||
|
|
||||||
|
<head>
|
||||||
|
<title>LuaFileSystem</title>
|
||||||
|
<style type="text/css">
|
||||||
|
ul { list-style-type: disc };
|
||||||
|
</style>
|
||||||
|
</head>
|
||||||
|
|
||||||
|
<body bgcolor="#FFFFFF">
|
||||||
|
|
||||||
|
<center>
|
||||||
|
<table border=0 cellspacing=2 cellpadding=2>
|
||||||
|
<tr><td align=center><a href="http://www.keplerproject.org">
|
||||||
|
<img border=0 alt="LuaFileSystem" src="luafilesystem.png"></a>
|
||||||
|
<tr><td align=center><big><b>LuaFileSystem</b></big>
|
||||||
|
<tr><td align=center valign=top>File system library for the
|
||||||
|
<a href="http://www.lua.org">Lua</a>
|
||||||
|
programming language
|
||||||
|
</table>
|
||||||
|
</center>
|
||||||
|
<p>
|
||||||
|
|
||||||
|
<center><small>
|
||||||
|
<a href="#over">overview</a> ·
|
||||||
|
<a href="#download">download</a> ·
|
||||||
|
<a href="manual.html">manual</a> ·
|
||||||
|
<a href="#credits">credits</a> ·
|
||||||
|
<a href="#contact">contact us</a>
|
||||||
|
</small></center>
|
||||||
|
<p>
|
||||||
|
|
||||||
|
<hr>
|
||||||
|
<h2>Contents</h2>
|
||||||
|
<p>
|
||||||
|
<ul>
|
||||||
|
<li> <a href="#over">Overview</a>
|
||||||
|
<li> <a href="#version">Current Version</a>
|
||||||
|
<li> <a href="#download">Download</a>
|
||||||
|
<li> <a href="#manual">Manual</a>
|
||||||
|
<li> <a href="#credits">Credits</a>
|
||||||
|
<li> <a href="#contact">Contact us</a>
|
||||||
|
</ul>
|
||||||
|
|
||||||
|
<a name="over"></a>
|
||||||
|
<h2>Overview</h2>
|
||||||
|
<p>
|
||||||
|
LuaFileSystem is a library developed to complement the set of functions
|
||||||
|
related to file systems offered by the standard Lua distribution.
|
||||||
|
One of its goals is to be as portable as Lua.
|
||||||
|
<p>
|
||||||
|
LuaFileSystem is free software and uses the same
|
||||||
|
<a href="license.html">license</a>
|
||||||
|
as Lua 5.0.
|
||||||
|
|
||||||
|
|
||||||
|
<a name="version"></a>
|
||||||
|
<h2>Current version</h2>
|
||||||
|
<p>
|
||||||
|
Current version is 1.0 alpha.
|
||||||
|
It was developed for Lua 5.0.
|
||||||
|
</p>
|
||||||
|
|
||||||
|
|
||||||
|
<a name="download"></a>
|
||||||
|
<h2>Download</h2>
|
||||||
|
<p>
|
||||||
|
LuaFileSystem can be downloaded in source code from the following links:
|
||||||
|
<p>
|
||||||
|
<ul>
|
||||||
|
<li><a href="luafilesystem-1.0a.tar.gz">luafilesystem-1.0a.tar.gz</a>.
|
||||||
|
<li><a href="luafilesystem-1.0a.zip">luafilesystem-1.0a.zip</a>.
|
||||||
|
</ul>
|
||||||
|
|
||||||
|
|
||||||
|
<a name="new"></a>
|
||||||
|
<h2>What's new</h2>
|
||||||
|
<p>
|
||||||
|
<ul>
|
||||||
|
<li>[2/Aug/2004] Version 1.0 alpha released
|
||||||
|
</ul>
|
||||||
|
|
||||||
|
|
||||||
|
<a name="credits"></a>
|
||||||
|
<h2>Credits</h2>
|
||||||
|
|
||||||
|
<p>
|
||||||
|
LuaFileSystem was designed by Roberto Ierusalimschy,
|
||||||
|
André Carregal and Tomás Guisasola as part of
|
||||||
|
<a href="http://www.keplerproject.org">The Kepler Project</a>
|
||||||
|
which holds its copyright.
|
||||||
|
</p>
|
||||||
|
|
||||||
|
|
||||||
|
<a name="contact"></a>
|
||||||
|
<h2>Contact us</h2>
|
||||||
|
|
||||||
|
<p>
|
||||||
|
For more information please
|
||||||
|
<a href="mailto:tomas-NO-SPAM-THANKS@keplerproject.org">contact us</a>.
|
||||||
|
Comments are welcome!
|
||||||
|
</p>
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
<p>
|
||||||
|
<hr>
|
||||||
|
<small>
|
||||||
|
$Id: index.html,v 1.1 2004/07/27 14:15:24 tomas Exp $
|
||||||
|
</small>
|
||||||
|
|
||||||
|
</body>
|
||||||
|
</html>
|
||||||
|
|
||||||
78
doc/us/license.html
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78
doc/us/license.html
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@@ -0,0 +1,78 @@
|
|||||||
|
<! See Copyright Notice at the end of this file>
|
||||||
|
<HTML>
|
||||||
|
<HEAD>
|
||||||
|
<TITLE>LuaFileSystem: license</TITLE>
|
||||||
|
</HEAD>
|
||||||
|
|
||||||
|
<BODY BGCOLOR="#FFFFFF">
|
||||||
|
|
||||||
|
<HR>
|
||||||
|
<H1>
|
||||||
|
License
|
||||||
|
</H1>
|
||||||
|
|
||||||
|
LuaFileSystem
|
||||||
|
is free software:
|
||||||
|
it can be used for both academic and commercial purposes at absolutely no cost.
|
||||||
|
There are no royalties or GNU-like "copyleft" restrictions.
|
||||||
|
LuaFileSystem qualifies as
|
||||||
|
<A HREF="http://www.opensource.org/docs/definition.html">Open Source</A>
|
||||||
|
software.
|
||||||
|
Its licenses are compatible with
|
||||||
|
<A HREF="http://www.gnu.org/licenses/gpl.html">GPL</A>.
|
||||||
|
LuaFileSystem is not in the public domain and
|
||||||
|
<a href="http://www.keplerproject.org">The Kepler Project</a>
|
||||||
|
keep its copyright.
|
||||||
|
The legal details are below.
|
||||||
|
<P>
|
||||||
|
|
||||||
|
The spirit of the license is that
|
||||||
|
you are free to use LuaFileSystem for any purpose at no cost without having to ask us.
|
||||||
|
The only requirement is that
|
||||||
|
if you do use LuaFileSystem,
|
||||||
|
then you should give us credit by including the appropriate copyright notice
|
||||||
|
somewhere in your product or its documentation.
|
||||||
|
<P>
|
||||||
|
|
||||||
|
The LuaFileSystem library is designed and implemented
|
||||||
|
by
|
||||||
|
Roberto Ierusalimschy,
|
||||||
|
André Carregal and
|
||||||
|
Tomás Guisasola.
|
||||||
|
The implementation is not derived from licensed software.
|
||||||
|
<P>
|
||||||
|
|
||||||
|
<!-- ===================================================================== -->
|
||||||
|
<HR>
|
||||||
|
Copyright © 2004 The Kepler Project.
|
||||||
|
<P>
|
||||||
|
|
||||||
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||||
|
of this software and associated documentation files (the "Software"), to deal
|
||||||
|
in the Software without restriction, including without limitation the rights
|
||||||
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||||
|
copies of the Software, and to permit persons to whom the Software is
|
||||||
|
furnished to do so, subject to the following conditions:
|
||||||
|
<P>
|
||||||
|
|
||||||
|
The above copyright notice and this permission notice shall be included in
|
||||||
|
all copies or substantial portions of the Software.
|
||||||
|
<P>
|
||||||
|
|
||||||
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||||
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||||
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||||
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
|
THE SOFTWARE.
|
||||||
|
<P>
|
||||||
|
|
||||||
|
<!-- ===================================================================== -->
|
||||||
|
<HR>
|
||||||
|
<SMALL>
|
||||||
|
$Id: license.html,v 1.1 2004/07/27 14:15:24 tomas Exp $
|
||||||
|
</SMALL>
|
||||||
|
|
||||||
|
</BODY>
|
||||||
|
</HTML>
|
||||||
144
doc/us/manual.html
Normal file
144
doc/us/manual.html
Normal file
@@ -0,0 +1,144 @@
|
|||||||
|
<! See Copyright Notice in license.html>
|
||||||
|
<html>
|
||||||
|
|
||||||
|
<head>
|
||||||
|
<title>LuaFileSystem</title>
|
||||||
|
<style type="text/css">
|
||||||
|
ul { list-style-type: disc };
|
||||||
|
</style>
|
||||||
|
</head>
|
||||||
|
|
||||||
|
<body bgcolor="#FFFFFF">
|
||||||
|
|
||||||
|
<hr>
|
||||||
|
|
||||||
|
<center>
|
||||||
|
<table border=0 cellspacing=2 cellpadding=2>
|
||||||
|
<tr><td align=center><a href="http://www.keplerproject.org/luafilesystem">
|
||||||
|
<img border=0 alt="LuaFileSystem logo" src="luafilesystem.png"></a>
|
||||||
|
<tr><td align=center><big><b>LuaFileSystem Reference Manual</b></big>
|
||||||
|
<tr><td align=center valign=top>File system library for the
|
||||||
|
<a href="http://www.lua.org">Lua</a>
|
||||||
|
programming language
|
||||||
|
</table>
|
||||||
|
</center>
|
||||||
|
<p>
|
||||||
|
|
||||||
|
<center><small>
|
||||||
|
<a href="index.html">home</a> ·
|
||||||
|
<a href="#introduction">introduction</a> ·
|
||||||
|
<a href="#reference">reference</a> ·
|
||||||
|
<a href="#example">example</a>
|
||||||
|
</small></center>
|
||||||
|
<p>
|
||||||
|
|
||||||
|
<hr>
|
||||||
|
|
||||||
|
<a name="introduction"></a>
|
||||||
|
<h2>Introduction</h2>
|
||||||
|
|
||||||
|
<p>
|
||||||
|
LuaFileSystem is a <a href="http://www.lua.org">Lua</a> library
|
||||||
|
developed to complement the set of functions related to file systems offered
|
||||||
|
by the standard Lua distribution.
|
||||||
|
<p>
|
||||||
|
LuaFileSystem is free software and uses the same
|
||||||
|
<a href="license.html">license</a>
|
||||||
|
as Lua 5.0.
|
||||||
|
</p>
|
||||||
|
|
||||||
|
|
||||||
|
<a name="reference"></a>
|
||||||
|
<h2>Reference</h2>
|
||||||
|
|
||||||
|
<p>
|
||||||
|
LuaFileSystem offers the following functions:
|
||||||
|
<ul>
|
||||||
|
<a name="chdir"></a>
|
||||||
|
<li> <b><tt>luafilesystem.chdir (path)</tt></b> <br>
|
||||||
|
Changes the current
|
||||||
|
working directory to the given <tt>path</tt>.
|
||||||
|
|
||||||
|
<a name="getcwd"></a>
|
||||||
|
<li> <b><tt>luafilesystem.currentdir ()</tt></b> <br>
|
||||||
|
Returns the current
|
||||||
|
working directory or <code>nil</code> plus an error string.
|
||||||
|
|
||||||
|
<a name="dir"></a>
|
||||||
|
<li> <b><tt>luafilesystem.dir (path)</tt></b> <br>
|
||||||
|
Lua iterator over the entries
|
||||||
|
of a given directory.
|
||||||
|
|
||||||
|
<a name="lock"></a>
|
||||||
|
<li> <b><tt>luafilesystem.lock (filehandle, mode[, start[, length]])</tt></b> <br>
|
||||||
|
Locks a file or a part of it.
|
||||||
|
This function works on <em>open files</em>;
|
||||||
|
the file handle should be specified as the first argument.
|
||||||
|
The string <code>mode</code> could be either <code>r</code> (for a
|
||||||
|
read/shared lock) or <code>w</code> (for a write/exclusive lock).
|
||||||
|
The optional arguments <code>start</code> and <code>length</code> can be
|
||||||
|
used to specify a starting point and its length;
|
||||||
|
both should be numbers.
|
||||||
|
This function returns a boolean indicating if the operation was successful;
|
||||||
|
in case of error, it returns <code>false</code> plus a string describing the
|
||||||
|
error.
|
||||||
|
|
||||||
|
<a name="mkdir"></a>
|
||||||
|
<li> <b><tt>luafilesystem.mkdir (dirname)</tt></b> <br>
|
||||||
|
Creates a new directory.
|
||||||
|
The argument is the name of the new directory.
|
||||||
|
|
||||||
|
<a name="unlock"></a>
|
||||||
|
<li> <b><tt>luafilesystem.unlock (filehandle[, start[, length]])</tt></b> <br>
|
||||||
|
Unlocks a file or a part of it.
|
||||||
|
This function works on <em>open files</em>;
|
||||||
|
the file handle should be specified as the first argument.
|
||||||
|
The optional arguments <code>start</code> and <code>length</code> can be
|
||||||
|
used to specify a starting point and its length;
|
||||||
|
both should be numbers.
|
||||||
|
This function returns a boolean indicating if the operation was successful;
|
||||||
|
in case of error, it returns <code>false</code> plus a string describing the
|
||||||
|
error.
|
||||||
|
|
||||||
|
</ul>
|
||||||
|
|
||||||
|
|
||||||
|
<a name="example"></a>
|
||||||
|
<h2>Example</h2>
|
||||||
|
|
||||||
|
|
||||||
|
<a name="contents"></a>
|
||||||
|
<h2>Contents</h2>
|
||||||
|
<p>
|
||||||
|
<ul>
|
||||||
|
<li> <a href="#introduction">Introduction</a>
|
||||||
|
<li> <a href="#reference">Reference</a>
|
||||||
|
<ul>
|
||||||
|
<li> <a href="#chdir">chdir</a>
|
||||||
|
<li> <a href="#currentdir">currentdir</a>
|
||||||
|
<li> <a href="#dir">dir</a>
|
||||||
|
<li> <a href="#lock">lock</a>
|
||||||
|
<li> <a href="#mkdir">mkdir</a>
|
||||||
|
<li> <a href="#unlock">unlock</a>
|
||||||
|
</ul>
|
||||||
|
<li> <a href="#examples">Examples</a>
|
||||||
|
</ul>
|
||||||
|
</p>
|
||||||
|
|
||||||
|
|
||||||
|
<p>
|
||||||
|
<center><small>
|
||||||
|
<a href="index.html">home</a> ·
|
||||||
|
<a href="#introduction">introduction</a> ·
|
||||||
|
<a href="#reference">reference</a> ·
|
||||||
|
<a href="#example">example</a>
|
||||||
|
</small></center>
|
||||||
|
<p>
|
||||||
|
|
||||||
|
<hr>
|
||||||
|
<small>
|
||||||
|
$Id: manual.html,v 1.1 2004/07/27 14:15:24 tomas Exp $
|
||||||
|
</small>
|
||||||
|
|
||||||
|
</body>
|
||||||
|
</html>
|
||||||
351
luafilesystem.c
Normal file
351
luafilesystem.c
Normal file
@@ -0,0 +1,351 @@
|
|||||||
|
/*
|
||||||
|
** File system manipulation library.
|
||||||
|
** This library offers these functions:
|
||||||
|
** luafilesystem.attributes (filepath [, attributename])
|
||||||
|
** luafilesystem.chdir (path)
|
||||||
|
** luafilesystem.currentdir ()
|
||||||
|
** luafilesystem.dir (path)
|
||||||
|
** luafilesystem.mkdir (path)
|
||||||
|
** luafilesystem.lock (fh, mode)
|
||||||
|
** luafilesystem.unlock (fh)
|
||||||
|
**
|
||||||
|
** $Id: luafilesystem.c,v 1.1 2004/07/27 14:15:24 tomas Exp $
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <errno.h>
|
||||||
|
#include <stdio.h>
|
||||||
|
#include <string.h>
|
||||||
|
#include <time.h>
|
||||||
|
|
||||||
|
#ifdef WIN32
|
||||||
|
#include <direct.h>
|
||||||
|
#include <io.h>
|
||||||
|
#include <sys/locking.h>
|
||||||
|
#else
|
||||||
|
#include <unistd.h>
|
||||||
|
#include <dirent.h>
|
||||||
|
#include <fcntl.h>
|
||||||
|
#include <sys/types.h>
|
||||||
|
#include <sys/stat.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include <lua.h>
|
||||||
|
#include <lauxlib.h>
|
||||||
|
#include <lualib.h>
|
||||||
|
|
||||||
|
#include "luafilesystem.h"
|
||||||
|
|
||||||
|
/* Define 'strerror' for systems that do not implement it */
|
||||||
|
#ifdef NO_STRERROR
|
||||||
|
#define strerror(_) "System unable to describe the error"
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* Define 'getcwd' for systems that do not implement it */
|
||||||
|
#ifdef NO_GETCWD
|
||||||
|
#define getcwd(p,s) NULL
|
||||||
|
#define getcwd_error "Function 'getcwd' not provided by system"
|
||||||
|
#else
|
||||||
|
#define getcwd_error strerror(errno)
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#define DIR_METATABLE "directory metatable"
|
||||||
|
#define MAX_DIR_LENGTH 1023
|
||||||
|
#ifdef _WIN32
|
||||||
|
typedef struct dir_data {
|
||||||
|
long hFile;
|
||||||
|
char pattern[MAX_DIR_LENGTH+1];
|
||||||
|
} dir_data;
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
** This function changes the working (current) directory
|
||||||
|
*/
|
||||||
|
static int change_dir (lua_State *L) {
|
||||||
|
const char *path = luaL_checkstring(L, 1);
|
||||||
|
if (chdir(path))
|
||||||
|
luaL_error(L,"Unable to change working directory to '%s'\n%s\n",
|
||||||
|
path, chdir_error);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
** This function returns the current directory
|
||||||
|
** If unable to get the current directory, it returns nil
|
||||||
|
** and a string describing the error
|
||||||
|
*/
|
||||||
|
static int get_dir (lua_State *L) {
|
||||||
|
char path[255+2];
|
||||||
|
if (getcwd(path, 255) == NULL) {
|
||||||
|
lua_pushnil(L);
|
||||||
|
lua_pushstring(L, getcwd_error);
|
||||||
|
return 2;
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
lua_pushstring(L, path);
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
** Check if the given element on the stack is a file and returns it.
|
||||||
|
*/
|
||||||
|
static FILE *check_file (lua_State *L, int idx, const char *funcname) {
|
||||||
|
FILE **fh = (FILE **)luaL_checkudata (L, idx, "FILE*");
|
||||||
|
if (fh == NULL) {
|
||||||
|
luaL_error (L, "%s: not a file", funcname);
|
||||||
|
return 0;
|
||||||
|
} else if (*fh == NULL) {
|
||||||
|
luaL_error (L, "%s: closed file", funcname);
|
||||||
|
return 0;
|
||||||
|
} else
|
||||||
|
return *fh;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
**
|
||||||
|
*/
|
||||||
|
static int _file_lock (lua_State *L, FILE *fh, const char *mode, const long start, long len, const char *funcname) {
|
||||||
|
int code;
|
||||||
|
#ifdef WIN32
|
||||||
|
/* lkmode valid values are:
|
||||||
|
_LK_LOCK Locks the specified bytes. If the bytes cannot be locked, the program immediately tries again after 1 second. If, after 10 attempts, the bytes cannot be locked, the constant returns an error.
|
||||||
|
_LK_NBLCK Locks the specified bytes. If the bytes cannot be locked, the constant returns an error.
|
||||||
|
_LK_NBRLCK Same as _LK_NBLCK.
|
||||||
|
_LK_RLCK Same as _LK_LOCK.
|
||||||
|
_LK_UNLCK Unlocks the specified bytes, which must have been previously locked.
|
||||||
|
|
||||||
|
Regions should be locked only briefly and should be unlocked before closing a file or exiting the program.
|
||||||
|
|
||||||
|
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_crt__locking.asp
|
||||||
|
*/
|
||||||
|
int lkmode;
|
||||||
|
switch (*mode) {
|
||||||
|
case 'r': lkmode = _LK_NBLCK; break;
|
||||||
|
case 'w': lkmode = _LK_NBLCK; break;
|
||||||
|
case 'u': lkmode = _LK_UNLCK; break;
|
||||||
|
default : luaL_error (L, "%s: invalid mode", funcname);
|
||||||
|
}
|
||||||
|
if (!len) {
|
||||||
|
fseek (fh, 0L, SEEK_END);
|
||||||
|
len = ftell (fh);
|
||||||
|
}
|
||||||
|
fseek (fh, start, SEEK_SET);
|
||||||
|
code = _locking (fileno(fh), lkmode, len);
|
||||||
|
#else
|
||||||
|
struct flock f;
|
||||||
|
switch (*mode) {
|
||||||
|
case 'w': f.l_type = F_WRLCK; break;
|
||||||
|
case 'r': f.l_type = F_RDLCK; break;
|
||||||
|
case 'u': f.l_type = F_UNLCK; break;
|
||||||
|
default : luaL_error (L, "%s: invalid mode", funcname);
|
||||||
|
}
|
||||||
|
f.l_whence = SEEK_SET;
|
||||||
|
f.l_start = (off_t)start;
|
||||||
|
f.l_len = (off_t)len;
|
||||||
|
code = fcntl (fileno(fh), F_SETLK, &f);
|
||||||
|
#endif
|
||||||
|
return (code != -1);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
** Locks a file.
|
||||||
|
** @param #1 File handle.
|
||||||
|
** @param #2 String with lock mode ('w'rite, 'r'ead).
|
||||||
|
** @param #3 Number with start position (optional).
|
||||||
|
** @param #4 Number with length (optional).
|
||||||
|
*/
|
||||||
|
static int file_lock (lua_State *L) {
|
||||||
|
FILE *fh = check_file (L, 1, "lock");
|
||||||
|
const char *mode = luaL_checkstring (L, 2);
|
||||||
|
const long start = luaL_optlong (L, 3, 0);
|
||||||
|
long len = luaL_optlong (L, 4, 0);
|
||||||
|
if (_file_lock (L, fh, mode, start, len, "lock")) {
|
||||||
|
lua_pushboolean (L, 1);
|
||||||
|
return 1;
|
||||||
|
} else {
|
||||||
|
lua_pushboolean (L, 0);
|
||||||
|
lua_pushfstring (L, "%s", strerror(errno));
|
||||||
|
return 2;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
** Unlocks a file.
|
||||||
|
** @param #1 File handle.
|
||||||
|
** @param #2 Number with start position (optional).
|
||||||
|
** @param #3 Number with length (optional).
|
||||||
|
*/
|
||||||
|
static int file_unlock (lua_State *L) {
|
||||||
|
FILE *fh = check_file (L, 1, "unlock");
|
||||||
|
const long start = luaL_optlong (L, 2, 0);
|
||||||
|
long len = luaL_optlong (L, 3, 0);
|
||||||
|
if (_file_lock (L, fh, "u", start, len, "unlock")) {
|
||||||
|
lua_pushboolean (L, 1);
|
||||||
|
return 1;
|
||||||
|
} else {
|
||||||
|
lua_pushboolean (L, 0);
|
||||||
|
lua_pushfstring (L, "%s", strerror(errno));
|
||||||
|
return 2;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
static void cgilua_sleep( lua_State *L )
|
||||||
|
{
|
||||||
|
unsigned int usec = (unsigned int)luaL_check_number( L, 1 );
|
||||||
|
|
||||||
|
#ifndef WIN32
|
||||||
|
sleep( (unsigned int)ceil( usec/1000.0 ));
|
||||||
|
#else
|
||||||
|
Sleep( (DWORD)usec );
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
|
||||||
|
static void cgilua_filesize( lua_State *L )
|
||||||
|
{
|
||||||
|
struct stat info;
|
||||||
|
char *file = luaL_check_string( L, 1 );
|
||||||
|
|
||||||
|
if (stat(file, &info))
|
||||||
|
{
|
||||||
|
lua_pushnil( L );
|
||||||
|
lua_pushstring( L, "Cannot retrieve stat info from file" );
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
lua_pushnumber(L, info.st_size);
|
||||||
|
}
|
||||||
|
*/
|
||||||
|
|
||||||
|
static int make_dir (lua_State *L) {
|
||||||
|
const char *path = luaL_checkstring (L, 1);
|
||||||
|
int fail;
|
||||||
|
#ifdef WIN32
|
||||||
|
int oldmask = umask (0);
|
||||||
|
fail = _mkdir (path);
|
||||||
|
#else
|
||||||
|
mode_t oldmask = umask( (mode_t)0 );
|
||||||
|
fail = mkdir (path, S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP |
|
||||||
|
S_IWGRP | S_IXGRP | S_IROTH | S_IXOTH );
|
||||||
|
#endif
|
||||||
|
lua_pushboolean (L, fail);
|
||||||
|
umask (oldmask);
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
** Directory iterator
|
||||||
|
*/
|
||||||
|
static int dir_iter (lua_State *L) {
|
||||||
|
#ifdef _WIN32
|
||||||
|
dir_data *d = (dir_data *)lua_touserdata (L, lua_upvalueindex (1));
|
||||||
|
struct _finddata_t c_file;
|
||||||
|
if (d->hFile == 0L) { /* first entry */
|
||||||
|
if ((d->hFile = _findfirst (d->pattern, &c_file)) == -1L) {
|
||||||
|
lua_pushnil (L);
|
||||||
|
lua_pushstring (L, strerror (errno));
|
||||||
|
return 2;
|
||||||
|
} else {
|
||||||
|
lua_pushstring (L, c_file.name);
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
} else { /* next entry */
|
||||||
|
if (_findnext (d->hFile, &c_file) == -1L)
|
||||||
|
return 0;
|
||||||
|
else {
|
||||||
|
lua_pushstring (L, c_file.name);
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
#else
|
||||||
|
DIR *d = *(DIR **) lua_touserdata (L, lua_upvalueindex (1));
|
||||||
|
struct dirent *entry;
|
||||||
|
if ((entry = readdir (d)) != NULL) {
|
||||||
|
lua_pushstring (L, entry->d_name);
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
return 0;
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
** Closes directory iterators
|
||||||
|
*/
|
||||||
|
static int dir_close (lua_State *L) {
|
||||||
|
#ifdef _WIN32
|
||||||
|
dir_data *d = (dir_data *)lua_touserdata (L, 1);
|
||||||
|
if (d->hFile) {
|
||||||
|
_findclose (d->hFile);
|
||||||
|
}
|
||||||
|
#else
|
||||||
|
DIR *d = *(DIR **)lua_touserdata (L, 1);
|
||||||
|
if (d)
|
||||||
|
closedir (d);
|
||||||
|
#endif
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
** Factory of directory iterators
|
||||||
|
*/
|
||||||
|
static int dir_iter_factory (lua_State *L) {
|
||||||
|
const char *path = luaL_checkstring (L, 1);
|
||||||
|
#ifdef _WIN32
|
||||||
|
dir_data *dir = (dir_data *) lua_newuserdata (L, sizeof(dir_data));
|
||||||
|
dir->hFile = 0L;
|
||||||
|
if (strlen(path) > MAX_DIR_LENGTH)
|
||||||
|
luaL_error (L, "path too long: %s", path);
|
||||||
|
else
|
||||||
|
sprintf (dir->pattern, "%s/*", path);
|
||||||
|
luaL_getmetatable (L, DIR_METATABLE);
|
||||||
|
lua_setmetatable (L, -2);
|
||||||
|
#else
|
||||||
|
DIR **d = (DIR **) lua_newuserdata (L, sizeof(DIR *));
|
||||||
|
luaL_getmetatable (L, DIR_METATABLE);
|
||||||
|
lua_setmetatable (L, -2);
|
||||||
|
*d = opendir (path);
|
||||||
|
if (*d == NULL)
|
||||||
|
luaL_error (L, "cannot open %s: %s", path, strerror (errno));
|
||||||
|
#endif
|
||||||
|
lua_pushcclosure (L, dir_iter, 1);
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
** Creates directory metatable.
|
||||||
|
*/
|
||||||
|
static int dir_create_meta (lua_State *L) {
|
||||||
|
luaL_newmetatable (L, DIR_METATABLE);
|
||||||
|
/* set its __gc field */
|
||||||
|
lua_pushstring (L, "__gc");
|
||||||
|
lua_pushcfunction (L, dir_close);
|
||||||
|
lua_settable (L, -3);
|
||||||
|
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
static const struct luaL_reg fslib[] = {
|
||||||
|
{"chdir", change_dir},
|
||||||
|
{"currentdir", get_dir},
|
||||||
|
{"dir", dir_iter_factory},
|
||||||
|
{"lock", file_lock},
|
||||||
|
{"mkdir", make_dir},
|
||||||
|
{"unlock", file_unlock},
|
||||||
|
{NULL, NULL},
|
||||||
|
};
|
||||||
|
|
||||||
|
int luaopen_luafilesystem (lua_State *L) {
|
||||||
|
dir_create_meta (L);
|
||||||
|
luaL_openlib (L, "luafilesystem", fslib, 0);
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
5
luafilesystem.def
Normal file
5
luafilesystem.def
Normal file
@@ -0,0 +1,5 @@
|
|||||||
|
LIBRARY luafilesystem.dll
|
||||||
|
DESCRIPTION "LuaFilesystem"
|
||||||
|
VERSION 1.0
|
||||||
|
EXPORTS
|
||||||
|
luaopen_luafilesystem
|
||||||
10
luafilesystem.h
Normal file
10
luafilesystem.h
Normal file
@@ -0,0 +1,10 @@
|
|||||||
|
/* Define 'chdir' for systems that do not implement it */
|
||||||
|
/* $Id: luafilesystem.h,v 1.1 2004/07/27 14:15:24 tomas Exp $ */
|
||||||
|
#ifdef NO_CHDIR
|
||||||
|
#define chdir(p) (-1)
|
||||||
|
#define chdir_error "Function 'chdir' not provided by system"
|
||||||
|
#else
|
||||||
|
#define chdir_error strerror(errno)
|
||||||
|
#endif
|
||||||
|
|
||||||
|
int luaopen_filesystem (lua_State *L);
|
||||||
8
t_luafilesystem.lua
Normal file
8
t_luafilesystem.lua
Normal file
@@ -0,0 +1,8 @@
|
|||||||
|
-- $Id: t_luafilesystem.lua,v 1.1 2004/07/27 14:15:24 tomas Exp $
|
||||||
|
if not luafilesystem and loadlib then
|
||||||
|
local libname = "LIB_NAME"
|
||||||
|
local libopen = "luaopen_luafilesystem"
|
||||||
|
local init, err1, err2 = loadlib (libname, libopen)
|
||||||
|
assert (init, (err1 or '')..(err2 or ''))
|
||||||
|
init ()
|
||||||
|
end
|
||||||
26
teste.lua
Normal file
26
teste.lua
Normal file
@@ -0,0 +1,26 @@
|
|||||||
|
#!/usr/local/bin/lua -i
|
||||||
|
|
||||||
|
require"luafilesystem"
|
||||||
|
|
||||||
|
print(luafilesystem.version)
|
||||||
|
|
||||||
|
function p ()
|
||||||
|
local fh = assert (io.open ("teste", 'r'))
|
||||||
|
assert (luafilesystem.lock (fh, 'r'))
|
||||||
|
print (fh:read"*a")
|
||||||
|
fh:close ()
|
||||||
|
end
|
||||||
|
|
||||||
|
function wr ()
|
||||||
|
fh = assert (io.open ("teste", 'w'))
|
||||||
|
assert (luafilesystem.lock (fh, 'w'))
|
||||||
|
end
|
||||||
|
|
||||||
|
function op ()
|
||||||
|
fh = assert (io.open ("teste", 'r'))
|
||||||
|
assert (luafilesystem.lock (fh, 'r'))
|
||||||
|
end
|
||||||
|
|
||||||
|
function fw (x)
|
||||||
|
assert (fh:write (x))
|
||||||
|
end
|
||||||
Reference in New Issue
Block a user