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author | Khaled Hosny <khaledhosny@eglug.org> | 2010-01-11 15:15:52 +0200 |
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committer | Khaled Hosny <khaledhosny@eglug.org> | 2010-01-11 16:03:13 +0200 |
commit | f1c3cb9dc199c28cdd2c813eb1ea5c21345125d0 (patch) | |
tree | 808986ca292251a39a2fc9fa3a7e01b9e761577e /luaextra-boolean.lua | |
parent | e5ad063f805ecbf5fd093712bc60ef5aec25a6fd (diff) | |
download | lualibs-f1c3cb9dc199c28cdd2c813eb1ea5c21345125d0.tar.gz |
Import ConTeX's lua libraries
Replace most of luaextra.lua with a bunch of require() calls and add
renamed (but unmodified) ConTeX lua libraries to the repository.
ConTeXt's l-xml.lua module has been excluded because it depends on a
bunch of other ConTeXt specific modules. Also l-pdfview.lua has been
dropped, I don't know what to use it for.
Diffstat (limited to 'luaextra-boolean.lua')
-rw-r--r-- | luaextra-boolean.lua | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/luaextra-boolean.lua b/luaextra-boolean.lua new file mode 100644 index 0000000..be7ec7d --- /dev/null +++ b/luaextra-boolean.lua @@ -0,0 +1,55 @@ +if not modules then modules = { } end modules ['l-boolean'] = { + version = 1.001, + comment = "companion to luat-lib.mkiv", + author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files" +} + +boolean = boolean or { } + +local type, tonumber = type, tonumber + +function boolean.tonumber(b) + if b then return 1 else return 0 end +end + +function toboolean(str,tolerant) + if tolerant then + local tstr = type(str) + if tstr == "string" then + return str == "true" or str == "yes" or str == "on" or str == "1" or str == "t" + elseif tstr == "number" then + return tonumber(str) ~= 0 + elseif tstr == "nil" then + return false + else + return str + end + elseif str == "true" then + return true + elseif str == "false" then + return false + else + return str + end +end + +function string.is_boolean(str) + if type(str) == "string" then + if str == "true" or str == "yes" or str == "on" or str == "t" then + return true + elseif str == "false" or str == "no" or str == "off" or str == "f" then + return false + end + end + return nil +end + +function boolean.alwaystrue() + return true +end + +function boolean.falsetrue() + return false +end |