Pequenas melhorias na documentacao.

Implementacao da funcao `attributes' que recupera informacoes sobre os arquivos.

2 files changed, 152 insertions, 4 deletions

diff --git a/doc/us/index.html b/doc/us/index.html
index 6b81ad9..78b38e3 100644
--- a/doc/us/index.html
+++ b/doc/us/index.html
@@ -60,6 +60,11 @@ as Lua 5.0.
 Current version is 1.0 alpha.
 It was developed for Lua 5.0.
 </p>
+<p>
+Version 1.0 follows the
+<a href="http://www.keplerproject.org/compat">package proposal</a>
+for Lua 5.1
+(see section <a href="#installation">Installation</a> for more details).
 
 
 <a name="download"></a>
@@ -77,10 +82,34 @@ LuaFileSystem can be downloaded in source code from the following links:
 <h2>What's new</h2>
 <p>
 <ul>
-  <li>[2/Aug/2004] Version 1.0 alpha released
+  <li>[?/?/2004] Version 1.0 alpha released
 </ul>
 
 
+<a name="installation"></a>
+<h2>Installation</h2>
+<p>
+LuaFileSystem is distributed as a pair of C source and header files.
+The distribution provides a <tt>Makefile</tt> prepared to compile the
+library and install it.
+The file <tt>config</tt> should be edited to suit the needs of the aimed
+platform.
+</p>
+<p>
+LuaFileSystem follows the
+<a href="http://www.keplerproject.org/compat">package proposal</a>
+for Lua 5.1,
+therefore this package should be "installed".
+In other words,
+if you are using Lua 5.0,
+the files <tt>compat-5.1.c</tt> and <tt>compat-5.1.h</tt> must be used
+in the compilation and the file <tt>compat-5.1.lua</tt> must be installed
+in the <tt>LUA_PATH</tt>.
+If you are using Lua 5.1,
+nothing should be done.
+</p>
+
+
 <a name="credits"></a>
 <h2>Credits</h2>
 
@@ -106,7 +135,7 @@ Comments are welcome!
 <p>
 <hr>
 <small>
-$Id: index.html,v 1.1 2004/07/27 14:15:24 tomas Exp $
+$Id: index.html,v 1.2 2004/10/23 22:33:11 tomas Exp $
 </small>
 
 </body>
diff --git a/src/lfs.c b/src/lfs.c
index 0b947d0..bf0f02b 100644
--- a/src/lfs.c
+++ b/src/lfs.c
@@ -9,13 +9,14 @@
 **   lfs.lock (fh, mode)
 **   lfs.unlock (fh)
 **
-** $Id: lfs.c,v 1.3 2004/10/15 10:04:15 tomas Exp $
+** $Id: lfs.c,v 1.4 2004/10/23 22:33:11 tomas Exp $
 */
 
 #include <errno.h>
 #include <stdio.h>
 #include <string.h>
 #include <time.h>
+#include <sys/stat.h>
 
 #ifdef WIN32
 #include <direct.h>
@@ -26,7 +27,6 @@
 #include <dirent.h>
 #include <fcntl.h>
 #include <sys/types.h>
-#include <sys/stat.h>
 #endif
 
 #include <lua.h>
@@ -335,7 +335,126 @@ static int dir_create_meta (lua_State *L) {
 }
 
 
+#ifdef _WIN32
+ #define S_ISDIR(mode)  (mode&_S_IFDIR)
+ #define S_ISREG(mode)  (mode&_S_IFREG)
+ #define S_ISLNK(mode)  (0)
+ #define S_ISSOCK(mode)  (0)
+ #define S_ISFIFO(mode)  (0)
+ #define S_ISCHR(mode)  (0)
+ #define S_ISBLK(mode)  (0)
+#endif
+/*
+** Convert the inode protection mode to a string.
+*/
+static const char *mode2string (mode_t mode) {
+  if ( S_ISREG(mode) )
+    return "file";
+  else if ( S_ISDIR(mode) )
+    return "directory";
+  else if ( S_ISLNK(mode) )
+        return "link";
+  else if ( S_ISSOCK(mode) )
+    return "socket";
+  else if ( S_ISFIFO(mode) )
+        return "named pipe";
+  else if ( S_ISCHR(mode) )
+        return "char device";
+  else if ( S_ISBLK(mode) )
+        return "block device";
+  else
+        return "other";
+}
+
+
+/*
+** Convert a struct timespec to a Lua table.
+*/
+static lua_Number time2number (struct timespec t) {
+        return (lua_Number)t.tv_sec + (lua_Number)t.tv_nsec / 1000000000.0;
+}
+
+
+/*
+** Get file information
+*/
+static int file_info (lua_State *L) {
+        struct stat info;
+        const char *file = luaL_checkstring (L, 1);
+
+        if (stat(file, &info)) {
+                lua_pushnil (L);
+                lua_pushfstring (L, "cannot obtain information from file `%s'", file);
+                return 2;
+        }
+        lua_newtable (L);
+        /* device inode resides on */
+        lua_pushliteral (L, "dev");
+        lua_pushnumber (L, (lua_Number)info.st_dev);
+        lua_rawset (L, -3);
+        /* inode's number */
+        lua_pushliteral (L, "ino");
+        lua_pushnumber (L, (lua_Number)info.st_ino);
+        lua_rawset (L, -3);
+        /* inode protection mode */
+        lua_pushliteral (L, "mode");
+        lua_pushstring (L, mode2string (info.st_mode));
+        lua_rawset (L, -3);
+        /* number or hard links to the file */
+        lua_pushliteral (L, "nlink");
+        lua_pushnumber (L, (lua_Number)info.st_nlink);
+        lua_rawset (L, -3);
+        /* user-id of owner */
+        lua_pushliteral (L, "uid");
+        lua_pushnumber (L, (lua_Number)info.st_uid);
+        lua_rawset (L, -3);
+        /* group-id of owner */
+        lua_pushliteral (L, "gid");
+        lua_pushnumber (L, (lua_Number)info.st_gid);
+        lua_rawset (L, -3);
+        /* device type, for special file inode */
+        lua_pushliteral (L, "rdev");
+        lua_pushnumber (L, (lua_Number)info.st_rdev);
+        lua_rawset (L, -3);
+        /* time of last access */
+        lua_pushliteral (L, "access");
+        lua_pushnumber (L, time2number (info.st_atimespec));
+        lua_rawset (L, -3);
+        /* time of last data modification */
+        lua_pushliteral (L, "modification");
+        lua_pushnumber (L, time2number (info.st_mtimespec));
+        lua_rawset (L, -3);
+        /* time of last file status change */
+        lua_pushliteral (L, "change");
+        lua_pushnumber (L, time2number (info.st_ctimespec));
+        lua_rawset (L, -3);
+        /* file size, in bytes */
+        lua_pushliteral (L, "size");
+        lua_pushnumber (L, (lua_Number)info.st_size);
+        lua_rawset (L, -3);
+        /* blocks allocated for file */
+        lua_pushliteral (L, "blocks");
+        lua_pushnumber (L, (lua_Number)info.st_blocks);
+        lua_rawset (L, -3);
+        /* optimal file system I/O blocksize */
+        lua_pushliteral (L, "blksize");
+        lua_pushnumber (L, (lua_Number)info.st_blksize);
+        lua_rawset (L, -3);
+        /* user defined flags for file */
+        lua_pushliteral (L, "flags");
+        lua_pushnumber (L, (lua_Number)info.st_flags);
+        lua_rawset (L, -3);
+        /* file generation number */
+        lua_pushliteral (L, "gen");
+        lua_pushnumber (L, (lua_Number)info.st_gen);
+        lua_rawset (L, -3);
+
+        return 1;
+}
+
+
 static const struct luaL_reg fslib[] = {
+        {"attributes", file_info},
         {"chdir", change_dir},
         {"currentdir", get_dir},
         {"dir", dir_iter_factory},