From 7002dfe5556f503320d9bee480e5fb43bdb6e7a3 Mon Sep 17 00:00:00 2001
From: Khaled Hosny <khaledhosny@eglug.org>
Date: Mon, 10 May 2010 17:23:06 +0300
Subject: Rename to lualibs

Rename luaextra->lualibs when sensible, also use luatexbase instead of
luatextra.
---
 lualibs.dtx | 408 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 408 insertions(+)
 create mode 100644 lualibs.dtx

(limited to 'lualibs.dtx')

diff --git a/lualibs.dtx b/lualibs.dtx
new file mode 100644
index 0000000..56aba9d
--- /dev/null
+++ b/lualibs.dtx
@@ -0,0 +1,408 @@
+% \iffalse meta-comment
+%
+% Copyright (C) 2009 by PRAGMA ADE / ConTeXt Development Team
+%
+% See ConTeXt's mreadme.pdf for the license.
+%
+% This work consists of the main source file lualibs.dtx
+% and the derived file lualibs.lua.
+%
+% Unpacking:
+%    tex lualibs.dtx
+%
+% Documentation:
+%    pdflatex lualibs.dtx
+%
+%    The class ltxdoc loads the configuration file ltxdoc.cfg
+%    if available. Here you can specify further options, e.g.
+%    use A4 as paper format:
+%       \PassOptionsToClass{a4paper}{article}
+%
+%
+%
+%<*ignore>
+\begingroup
+  \def\x{LaTeX2e}%
+\expandafter\endgroup
+\ifcase 0\ifx\install y1\fi\expandafter
+         \ifx\csname processbatchFile\endcsname\relax\else1\fi
+         \ifx\fmtname\x\else 1\fi\relax
+\else\csname fi\endcsname
+%</ignore>
+%<*install>
+\input docstrip.tex
+\Msg{************************************************************************}
+\Msg{* Installation}
+\Msg{* Package: lualibs 2010/01/11 v0.92 Lua additional functions.}
+\Msg{************************************************************************}
+
+\keepsilent
+\askforoverwritefalse
+
+\let\MetaPrefix\relax
+
+\preamble
+This is a generated file.
+
+Copyright (C) 2009 by PRAGMA ADE / ConTeXt Development Team
+
+See ConTeXt's mreadme.pdf for the license.
+
+This work consists of the main source file lualibs.dtx
+and the derived file lualibs.lua.
+
+\endpreamble
+
+% The following hacks are to generate a lua file with lua comments starting by
+% -- instead of %%
+
+\def\MetaPrefix{-- }
+
+\def\luapostamble{%
+  \MetaPrefix^^J%
+  \MetaPrefix\space End of File `\outFileName'.%
+}
+
+\def\currentpostamble{\luapostamble}%
+
+\generate{%
+  \usedir{tex/luatex/lualibs}%
+  \file{lualibs.lua}{\from{lualibs.dtx}{lua}}%
+}
+
+\obeyspaces
+\Msg{************************************************************************}
+\Msg{*}
+\Msg{* To finish the installation you have to move the following}
+\Msg{* files into a directory searched by TeX:}
+\Msg{*}
+\Msg{*     lualibs.lua}
+\Msg{*}
+\Msg{* Happy TeXing!}
+\Msg{*}
+\Msg{************************************************************************}
+
+\endbatchfile
+%</install>
+%<*ignore>
+\fi
+%</ignore>
+%<*driver>
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesFile{lualibs.drv}
+  [2010/01/11 v0.92 Lua additional functions.]
+\documentclass{ltxdoc}
+\EnableCrossrefs
+\CodelineIndex
+\begin{document}
+  \DocInput{lualibs.dtx}%
+\end{document}
+%</driver>
+% \fi
+% \CheckSum{0}
+%
+% \CharacterTable
+%  {Upper-case    \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
+%   Lower-case    \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
+%   Digits        \0\1\2\3\4\5\6\7\8\9
+%   Exclamation   \!     Double quote  \"     Hash (number) \#
+%   Dollar        \$     Percent       \%     Ampersand     \&
+%   Acute accent  \'     Left paren    \(     Right paren   \)
+%   Asterisk      \*     Plus          \+     Comma         \,
+%   Minus         \-     Point         \.     Solidus       \/
+%   Colon         \:     Semicolon     \;     Less than     \<
+%   Equals        \=     Greater than  \>     Question mark \?
+%   Commercial at \@     Left bracket  \[     Backslash     \\
+%   Right bracket \]     Circumflex    \^     Underscore    \_
+%   Grave accent  \`     Left brace    \{     Vertical bar  \|
+%   Right brace   \}     Tilde         \~}
+%
+% \GetFileInfo{lualibs.drv}
+%
+% \title{The \textsf{lualibs} package}
+% \date{2010/05/10 v0.93}
+% \author{Elie Roux \\ \texttt{elie.roux@telecom-bretagne.eu}}
+%
+% \maketitle
+%
+% \begin{abstract}
+% Additional lua functions taken from the libs of Con\TeX t. For an
+% introduction on this package (among others), please refer to the document
+% \texttt{luatex-reference.pdf}.
+% \end{abstract}
+%
+% \section{Overview}
+%
+% Lua is a very minimal language, and it does not have a lot of built-in
+% functions. Some functions will certainly be needed by a lot of packages.
+% Instead of making each of them implement these functions, the aim of this
+% package is to provide a standard set of functions. All functions are taken
+% from Con\TeX t libraries.
+%
+% There are some differences with the Con\TeX t funtions though, especially on
+% names: for example the \texttt{file.*} funtions are renamed in
+% \texttt{fpath.*}. It seems more logical as they deal with file paths, not
+% files. Also the \texttt{file.is\_readable} and \texttt{file.is\_writable}
+% are renamed \texttt{lfs.is\_readable} and \texttt{lfs.is\_writable}.
+%
+% If you use a function you think is missing in this file, please tell the
+% maintainer.
+%
+% \texttt{Warning:} Even if the names will certainly remain the same, some
+% implementations may differ, and some functions might appear or dissapear. As
+% Lua\TeX\ is not stable, this file is not neither.
+%
+% All functions are described in this document, but the one of the functions
+% you'll use most will certainly be \texttt{table.serialize} (also named
+% \texttt{table.tostring}) that takes a table and returns an intented string
+% describing the table. It describes the table so that Lua\TeX\ can read it
+% again as a table. You can do a lot of things with this functions, like
+% printing a table for debugging, or saving a table into a file. Functions are
+% also converted into bytecode to be saved.
+%
+% \section{\texttt{lualibs.lua}}
+%
+% \iffalse
+%<*lua>
+% \fi
+%
+%    \begin{macrocode}
+do
+    local lualibs_module = {
+        name          = "lualibs",
+        version       = 0.93,
+        date          = "2010/05/10",
+        description   = "Lua additional functions.",
+        author        = "Hans Hagen, PRAGMA-ADE, Hasselt NL & Elie Roux",
+        copyright     = "PRAGMA ADE / ConTeXt Development Team",
+        license       = "See ConTeXt's mreadme.pdf for the license",
+    }
+    if luatexbase then
+        luatexbase.provides_module(lualibs_module)
+    end
+end
+%    \end{macrocode}
+% Initialize \textsf{Kpathsea} library, so that |require()| will use it to
+% locate modules.
+%    \begin{macrocode}
+
+kpse.set_program_name("luatex")
+
+%    \end{macrocode}
+% We could load the modules with |require|, but this works only from version
+% 0.44, and doesn't work in Debian, so we simply use |dofile|.
+%    \begin{macrocode}
+
+local function load_lualibs_module(filename)
+    local path = kpse.find_file(filename)
+    if not path then
+        texio.write_nl(string.format("lualibs: error: cannot find file %s", filename))
+        return
+    end
+    texio.write_nl('log', string.format("lualibs: loading file %s", path))
+    --if (tex and tex.luatexversion and tex.luatexversion > 44)
+    --    or (status and status.luatex_version and status.luatex_version > 44) then
+    --    require(filename)
+    --else
+        dofile(path)
+    --end
+end
+
+load_lualibs_module("lualibs-string.lua")
+load_lualibs_module("lualibs-lpeg.lua")
+load_lualibs_module("lualibs-boolean.lua")
+load_lualibs_module("lualibs-number.lua")
+load_lualibs_module("lualibs-math.lua")
+load_lualibs_module("lualibs-table.lua")
+load_lualibs_module("lualibs-aux.lua")
+load_lualibs_module("lualibs-io.lua")
+load_lualibs_module("lualibs-os.lua")
+load_lualibs_module("lualibs-file.lua")
+load_lualibs_module("lualibs-md5.lua")
+load_lualibs_module("lualibs-dir.lua")
+load_lualibs_module("lualibs-unicode.lua")
+load_lualibs_module("lualibs-utils.lua")
+load_lualibs_module("lualibs-dimen.lua")
+load_lualibs_module("lualibs-url.lua")
+load_lualibs_module("lualibs-set.lua")
+load_lualibs_module("lualibs-dimen.lua")
+
+%    \end{macrocode}
+% Aliases for backward compatibility.
+%    \begin{macrocode}
+
+fpath           = file
+fpath.split     = file.split_path
+lfs.is_readable = file.is_readable
+lfs.is_writable = file.is_writable
+
+%    \end{macrocode}
+% Functions no longer provided by Con\TeX t module.
+%
+%    \begin{macro}{string:stripspaces}
+%
+%    A function to strip the spaces at the beginning and at the end of a
+%    string.
+%
+%    \begin{macrocode}
+
+function string:stripspaces()
+    return (self:gsub("^%s*(.-)%s*$", "%1"))
+end
+
+%    \end{macrocode}
+%
+%    \end{macro}
+%    \begin{macro}{lpeg.space and lpeg.newline}
+%
+%    Two small helpers for \texttt{lpeg}, that will certainly be widely used:
+%    spaces and newlines.
+%
+%    \begin{macrocode}
+
+lpeg.space    = lpeg.S(" \t\f\v")
+lpeg.newline  = lpeg.P("\r\n") + lpeg.P("\r") +lpeg.P("\n")
+
+%    \end{macrocode}
+%
+%    \end{macro}
+%    \begin{macro}{table.contains value}
+%
+%    A function returning true if the value \texttt{val} is in the table
+%    \texttt{t}.
+%
+%    \begin{macrocode}
+
+function table.contains_value(t, val)
+    if t then
+        for k, v in pairs(t) do
+            if v==val then
+                return true
+            end
+        end
+    end
+    return false
+end
+
+%    \end{macrocode}
+%
+%    \end{macro}
+%    \begin{macro}{table.contains key}
+%
+%    A function returning true if the key \texttt{key} is in the table
+%    \texttt{t}
+%
+%    \begin{macrocode}
+
+function table.contains_key(t, key)
+    if t then
+        for k, v in pairs(t) do
+            if k==key then
+                return true
+            end
+        end
+    end
+    return false
+end
+
+%    \end{macrocode}
+%
+%    \end{macro}
+%    \begin{macro}{table.value position}
+%
+%    A function returning the position of a value in a table. This will be
+%    important to be able to remove a value.
+%
+%    \begin{macrocode}
+
+function table.value_position(t, val)
+    if t then
+        local i=1
+        for k, v in pairs(t) do
+            if v==val then
+                return i
+            end
+            i=i+1
+        end
+    end
+    return 0
+end
+
+%    \end{macrocode}
+%
+%    \end{macro}
+%    \begin{macro}{table.key position}
+%
+%    A function returning the position of a key in a table.
+%
+%    \begin{macrocode}
+
+function table.key_position(t, key)
+    if t then
+        local i=1
+        for k,v in pairs(t) do
+            if k==key then
+                return i
+            end
+            i = i+1
+        end
+    end
+    return -1
+end
+
+%    \end{macrocode}
+%
+%    \end{macro}
+%    \begin{macro}{table.remove key}
+%
+%    Removing a key from a table.
+%
+%    \begin{macrocode}
+
+function table.remove_key(t, k)
+    local p = table.key_position(t,k)
+    if p ~= -1 then
+        table.remove(t, table.key_position(t,k))
+    end
+end
+
+%    \end{macrocode}
+%
+%    \end{macro}
+%    \begin{macro}{fpath.normalize sep}
+%
+%    A function to change directory separators to canonical ones (\texttt{/}).
+%
+%    \begin{macrocode}
+
+function fpath.normalize_sep(str)
+    return str:gsub("\\", "/")
+end
+
+%    \end{macrocode}
+%
+%    \end{macro}
+%    \begin{macro}{fpath.localize sep}
+%
+%    A function changing directory separators into local ones (\texttt{/} on
+%    Unix, |\| on Windows).
+%
+%    \begin{macrocode}
+
+function fpath.localize_sep(str)
+    if os.type == 'windows' or os.type == 'msdos' then
+        return str:gsub("/", "\\")
+    else
+        return str:gsub("\\", "/")
+    end
+end
+
+%    \end{macrocode}
+%
+%    \end{macro}
+%
+% \iffalse
+%</lua>
+% \fi
+% \Finale
+\endinput
-- 
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