Merge pull request #9 from lunarmodules/retool

.github/workflows/deploy.yml

@@ -0,0 +1,34 @@
+name: Deploy
+
+on: [ push, workflow_dispatch ]
+
+jobs:
+
+  affected:
+    uses: lunarmodules/.github/.github/workflows/list_affected_rockspecs.yml@main
+
+  build:
+    needs: affected
+    if: ${{ needs.affected.outputs.rockspecs }}
+    uses: lunarmodules/.github/.github/workflows/test_build_rock.yml@main
+    with:
+      rockspecs: ${{ needs.affected.outputs.rockspecs }}
+
+  upload:
+    needs: [ affected, build ]
+    # Only run upload if:
+    # 1. We are on the canonical repository (no uploads from forks)
+    # 2. The current commit is either tagged or on the default branch (the workflow will upload dev/scm rockspecs any
+    #    time they are touched, tagged ones whenever the edited rockspec and tag match)
+    # 3. Some rockspecs were changed — this implies the commit changing the rockspec is the same one that gets tagged
+    if: >-
+      ${{
+        github.repository == 'lunarmodules/lua-iconv' &&
+        ( github.ref_name == 'master' || startsWith(github.ref, 'refs/tags/') ) &&
+        needs.affected.outputs.rockspecs
+      }}
+    uses: lunarmodules/.github/.github/workflows/upload_to_luarocks.yml@main
+    with:
+      rockspecs: ${{ needs.affected.outputs.rockspecs }}
+    secrets:
+      apikey: ${{ secrets.LUAROCKS_APIKEY }}

.github/workflows/luacheck.yml

@@ -0,0 +1,13 @@
+name: Luacheck
+
+on: [push, pull_request]
+
+jobs:
+
+  luacheck:
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Luacheck
+        uses: lunarmodules/luacheck@v1

README.md

@@ -0,0 +1,130 @@
+# Lua-iconv
+
+Perform character set conversions in Lua
+
+(c) 2005-11 Alexandre Erwin Ittner <[email protected]>
+
+
+## Introduction
+
+Lua-iconv provides POSIX 'iconv' bindings for the Lua Programming Language.
+The iconv library converts a sequence of characters from one codeset into a sequence of corresponding characters in another codeset.
+The codesets are those specified in the `iconv.new()` call that returned the conversion descriptor, `cd`.
+
+Lua-iconv 7 *requires* Lua 5.1 or Lua 5.2. For Lua 5.0, use the first release (lua-iconv-r1).
+
+Details on iconv may be obtained in the [Open Group's interface definition](http://www.opengroup.org/onlinepubs/007908799/xsh/iconv.h.html).
+
+
+## Download and installation
+
+Lua-iconv can be obtained from [its GitHub project page](https://github.com/lunarmodules/lua-iconv), from a LuaRocks server, or from some Linux distributions which already provide it (eg. Debian).
+
+Unless you downloaded a compiled package, you must build the library for your system.
+If you have LuaRocks installed, all the process is automatic; just fire up your favourite shell and type, as root:
+
+```console
+luarocks install lua-iconv
+```
+
+and the package will be downloaded from a rock server, installed and configured.
+Otherwise, you must compile and install the package.
+In a system with pkg-config (as many Linux distributions and Unix flavors) open a shell, untar the distribution package and, within the program directory, type:
+
+```console
+make install
+```
+
+as root.
+The library will be compiled and installed on the in the correct path (which is defined in lua5.x.pc).
+Compiling on systems without pkg-config requires manual changes in the Makefile (this includes Windows).
+
+
+## Loading and initialization
+
+Lua-iconv is a shared library that must be loaded in the Lua interpreter before use.
+You can simply do a
+
+```lua
+local iconv = require("iconv")
+```
+
+call to load up the library (that, of course, must be installed in a directory from `package.cpath`).
+
+
+## API documentation
+
+```lua
+cd = iconv.new(to, from)
+cd = iconv.open(to, from)
+```
+
+Opens a new conversion descriptor, from the 'from' charset to the 'to' charset.
+Concatenating "//TRANSLIT" to the first argument will enable character transliteration and concatenating "//IGNORE" to the first argument will cause iconv to ignore any invalid characters found in the input string.
+
+This function returns a new converter or nil on error.
+
+
+```lua
+nstr, err = cd:iconv(str)
+```
+
+Converts the 'str' string to the desired charset.
+This method always returns two arguments: the converted string and an error code, which may have any of the following values:
+
+* `nil`
+
+    No error. Conversion was successful.
+
+* `iconv.ERROR_NO_MEMORY`
+
+    Failed to allocate enough memory in the conversion process.
+
+* `iconv.ERROR_INVALID`
+
+    An invalid character was found in the input sequence.
+
+* `iconv.ERROR_INCOMPLETE`
+
+    An incomplete character was found in the input sequence.
+
+* `iconv.ERROR_FINALIZED`
+
+    Trying to use an already-finalized converter. This usually means
+    that the user was tweaking the garbage collector private methods.
+
+* `iconv.ERROR_UNKNOWN`
+
+    There was an unknown error.
+
+
+## License
+
+Lua-iconv is copyrighted 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. The legal details are below:
+
+   Lua-iconv is (c) 2005-11 Alexandre Erwin Ittner
+
+   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:
+
+   The above copyright notice and this permission notice shall be
+   included in all copies or substantial portions of the Software.
+
+   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 AUTHOR OR COPYRIGHT HOLDER 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.
+
+   If you use this package in a product, an acknowledgment in the product
+   documentation would be greatly appreciated (but it is not required).
+

makestr.lua

@@ -3,8 +3,6 @@ local fp = assert(io.open(arg[1], "rb"))
 local str = assert(fp:read("*a"))
 fp:close()
 
-local i
-local c = 0
 local ostr = "local xxxxxxxxxxx = \""
 for i = 1, string.len(str) do
   ostr = ostr .. "\\" .. string.byte(string.sub(str, i, i+1))

test_iconv.lua

@@ -76,7 +76,7 @@ local ebcdic = "\193\150\64\147\150\149\135\133\107\64\129\150\64\147\164\129"
 .. "\37"
 
 
-function check_one(to, from, text)
+local function check_one(to, from, text)
   print("\n-- Testing conversion from " .. from .. " to " .. to)
   local cd = iconv.new(to .. "//TRANSLIT", from)
   assert(cd, "Failed to create a converter object.")
@@ -102,23 +102,24 @@ check_one(termcs, "EBCDIC-CP-ES", ebcdic)
 
 -- The library must never crash the interpreter, even if the user tweaks
 -- with the garbage collector methods.
-local cd = iconv.new("iso-8859-1", "utf-8")
-local _, e = cd:iconv("atenção")
+local _, e, cd, s, gc
+cd = iconv.new("iso-8859-1", "utf-8")
+_, e = cd:iconv("atenção")
 assert(e == nil, "Unexpected conversion error")
-local gc = getmetatable(cd).__gc
+gc = getmetatable(cd).__gc
 gc(cd)
-local _, e = cd:iconv("atenção")
+_, e = cd:iconv("atenção")
 assert(e == iconv.ERROR_FINALIZED, "Failed to detect double-freed objects")
 gc(cd)
 
 
 -- Test expected return values
-local cd = iconv.new("ascii", "utf-8")
-local _, e = cd:iconv("atenção")
+cd = iconv.new("ascii", "utf-8")
+_, e = cd:iconv("atenção")
 assert(e == iconv.ERROR_INVALID, "Unexpected return value for invalid conversion")
 
 
-local cd = iconv.new("iso-8859-1", "utf-8")
-local s, e = cd:iconv("atenção")
+cd = iconv.new("iso-8859-1", "utf-8")
+s, e = cd:iconv("atenção")
 assert(s == "aten\231\227o", "Unexpected result for valid conversion")
 assert(e == nil, "Unexpected return value for valid conversion")