1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
if not modules then modules = { } end modules ['meta-tex'] = {
version = 1.001,
comment = "companion to meta-tex.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local format, gsub, find, match = string.format, string.gsub, string.find, string.match
local P, C, Cs, lpegmatch = lpeg.P, lpeg.C, lpeg.Cs, lpeg.match
-- local left = P("[")
-- local right = P("]")
-- local space = P(" ")
-- local argument = left * C((1-right)^1) * right
-- local pattern = (argument + space)^0
-- function metapost.sometxt(optional,str)
-- if optional == "" then
-- context.sometxta(str)
-- else
-- local one, two = lpegmatch(pattern,optional)
-- if two then
-- context.sometxtc(one,two,str)
-- elseif one then
-- context.sometxtb(one,str)
-- else
-- context.sometxta(str)
-- end
-- end
-- end
local pattern = Cs((P([[\"]]) + P([["]])/"\\quotedbl{}" + P(1))^0) -- or \char
function metapost.escaped(str)
context(lpegmatch(pattern,str))
end
local simplify = true
-- local function strip(n,e)
-- -- get rid of e(0)
-- -- get rid of e(+*)
-- e = gsub(e,"^+","")
-- -- remove leading zeros
-- e = gsub(e,"^([+-]*)0+(%d)","%1%2")
-- if not simplify then
-- -- take it as it is
-- elseif n == "1" then
-- return format("10^{%s}",e)
-- end
-- return format("%s\\times10^{%s}",n,e)
-- end
--
-- function metapost.format_n(fmt,...)
-- fmt = gsub(fmt,"@","%%")
-- local initial, hasformat, final = match(fmt,"^(.-)(%%.-[%a])(.-)$")
-- if hasformat then
-- str = format(fmt,...)
-- str = gsub(str,"(.-)e(.-)$",strip)
-- str = format("%s\\mathematics{%s}%s",initial,str,final)
-- elseif not find(fmt,"%%") then
-- str = format("%"..fmt,...)
-- str = gsub(str,"(.-)e(.-)$",strip)
-- str = format("\\mathematics{%s}",str)
-- end
-- context(str)
-- end
-- todo: proper lpeg
local function strip(n,e)
-- get rid of e(0)
-- get rid of e(+*)
e = gsub(e,"^+","")
-- remove leading zeros
e = gsub(e,"^([+-]*)0+(%d)","%1%2")
if not simplify then
-- take it as it is
elseif n == "1" then
return format("\\mathematics{10^{%s}}",e)
end
return format("\\mathematics{%s\\times10^{%s}}",n,e)
end
function metapost.format_n(fmt,...)
fmt = gsub(fmt,"@","%%")
if find(fmt,"%%") then
str = format(fmt,...)
else -- yes or no
str = format("%"..fmt,...)
end
str = gsub(str,"([%-%+]-[%.%d]+)e([%-%+]-[%.%d]+)",strip)
context(str)
end
function metapost.format_v(fmt,str)
metapost.format_n(fmt,metapost.untagvariable(str,false))
end
|
