diff options
Diffstat (limited to 'tex/context/base/l-boolean.lua')
| -rw-r--r-- | tex/context/base/l-boolean.lua | 45 |
1 files changed, 33 insertions, 12 deletions
diff --git a/tex/context/base/l-boolean.lua b/tex/context/base/l-boolean.lua index 2d502f164..2b94de76b 100644 --- a/tex/context/base/l-boolean.lua +++ b/tex/context/base/l-boolean.lua @@ -16,28 +16,49 @@ function boolean.tonumber(b) 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 + if str == nil then + return false + elseif str == false then + return false + elseif str == true then + return true elseif str == "true" then return true elseif str == "false" then return false + elseif not tolerant then + return false + elseif str == 0 then + return false + elseif (tonumber(str) or 0) > 0 then + return true else - return str + return str == "yes" or str == "on" or str == "t" end end string.toboolean = toboolean +function string.booleanstring(str) + if str == nil then + return false + elseif str == false then + return false + elseif str == true then + return true + elseif str == "true" then + return true + elseif str == "false" then + return false + elseif str == 0 then + return false + elseif (tonumber(str) or 0) > 0 then + return true + else + return str == "yes" or str == "on" or str == "t" + end +end + function string.is_boolean(str,default) if type(str) == "string" then if str == "true" or str == "yes" or str == "on" or str == "t" then |