diff options
Diffstat (limited to 'tex/context/base/mkiv/util-str.lua')
| -rw-r--r-- | tex/context/base/mkiv/util-str.lua | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/tex/context/base/mkiv/util-str.lua b/tex/context/base/mkiv/util-str.lua index fb510257a..9e6be9999 100644 --- a/tex/context/base/mkiv/util-str.lua +++ b/tex/context/base/mkiv/util-str.lua @@ -449,6 +449,31 @@ function number.sparseexponent(f,n) return tostring(n) end +local hf = { } +local hs = { } + +setmetatable(hf, { __index = function(t,k) + local v = "%." .. k .. "f" + t[k] = v + return v +end } ) + +setmetatable(hs, { __index = function(t,k) + local v = "%" .. k .. "s" + t[k] = v + return v +end } ) + +function number.formattedfloat(n,b,a) + local s = format(hf[a],n) + local l = (b or 0) + (a or 0) + 1 + if #s < l then + return format(hs[l],s) + else + return s + end +end + local template = [[ %s %s @@ -479,6 +504,7 @@ local autodouble=string.autodouble local sequenced=table.sequenced local formattednumber=number.formatted local sparseexponent=number.sparseexponent +local formattedfloat=number.formattedfloat ]] else @@ -504,6 +530,7 @@ else sequenced = table.sequenced, formattednumber = number.formatted, sparseexponent = number.sparseexponent, + formattedfloat = number.formattedfloat } end @@ -521,6 +548,9 @@ setmetatable(arguments, { __index = }) local prefix_any = C((S("+- .") + R("09"))^0) +local prefix_sub = (C((S("+-") + R("09"))^0) + Cc(0)) + * P(".") + * (C((S("+-") + R("09"))^0) + Cc(0)) local prefix_tab = P("{") * C((1-P("}"))^0) * P("}") + C((1-R("az","AZ","09","%%"))^0) -- we've split all cases as then we can optimize them (let's omit the fuzzy u) @@ -594,6 +624,11 @@ local format_F = function(f) -- beware, no cast to number end end +local format_k = function(b,a) -- slow + n = n + 1 + return format("formattedfloat(a%s,%i,%i)",n,b or 0, a or 0) +end + local format_g = function(f) n = n + 1 return format("format('%%%sg',a%s)",f,n) @@ -855,6 +890,7 @@ local builder = Cs { "start", + V("S") -- new + V("Q") -- new + V("N") -- new + + V("k") -- new -- + V("r") + V("h") + V("H") + V("u") + V("U") @@ -894,6 +930,7 @@ local builder = Cs { "start", ["S"] = (prefix_any * P("S")) / format_S, -- %S => %s (tostring) ["Q"] = (prefix_any * P("Q")) / format_S, -- %Q => %q (tostring) ["N"] = (prefix_any * P("N")) / format_N, -- %N => tonumber (strips leading zeros) + ["k"] = (prefix_sub * P("k")) / format_k, -- %k => like f but with n.m ["c"] = (prefix_any * P("c")) / format_c, -- %c => utf character (extension to regular) ["C"] = (prefix_any * P("C")) / format_C, -- %c => U+.... utf character -- |