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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
|
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 tostring = tostring
local format, gsub, find, match = string.format, string.gsub, string.find, string.match
local formatters = string.formatters
local P, S, R, C, Cs, lpegmatch = lpeg.P, lpeg.S, lpeg.R, lpeg.C, lpeg.Cs, lpeg.match
metapost = metapost or { }
local implement = interfaces.implement
-- 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
implement {
name = "metapostescaped",
actions = metapost.escaped,
arguments = "string"
}
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
-- -- --
local number = C((S("+-")^0 * R("09","..")^1))
local enumber = number * S("eE") * number
local cleaner = Cs((P("@@")/"@" + P("@")/"%%" + P(1))^0)
context = context or { exponent = function(...) print(...) end }
function metapost.format_string(fmt,...)
context(lpegmatch(cleaner,fmt),...)
end
function metapost.format_number(fmt,num)
if not num then
num = fmt
fmt = "%e"
end
local number = tonumber(num)
if number then
local base, exponent = lpegmatch(enumber,formatters[lpegmatch(cleaner,fmt)](number))
if base and exponent then
context.MPexponent(base,exponent)
else
context(number)
end
else
context(tostring(num))
end
end
-- This is experimental and will change!
function metapost.svformat(fmt,str)
metapost.format_string(fmt,metapost.untagvariable(str,false))
end
function metapost.nvformat(fmt,str)
metapost.format_number(fmt,metapost.untagvariable(str,false))
end
implement { name = "metapostformatted", actions = metapost.svformat, arguments = { "string", "string" } }
implement { name = "metapostgraphformat", actions = metapost.nvformat, arguments = { "string", "string" } }
-- kind of new
local f_exponent = formatters["\\MPexponent{%s}{%s}"]
local mpformatters = table.setmetatableindex(function(t,k)
local v = formatters[lpegmatch(cleaner,k)]
t[k] = v
return v
end)
function metapost.texexp(num,bfmt,efmt)
local number = tonumber(num)
if number then
local base, exponent = lpegmatch(enumber,format("%e",number))
if base and exponent then
if bfmt then
-- base = formatters[lpegmatch(cleaner,bfmt)](base)
base = mpformatters[bfmt](base)
else
base = format("%f",base)
end
if efmt then
-- exponent = formatters[lpegmatch(cleaner,efmt)](exponent)
exponent = mpformatters[efmt](exponent)
else
exponent = format("%i",exponent)
end
return f_exponent(base,exponent)
elseif bfmt then
-- return formatters[lpegmatch(cleaner,bfmt)](number)
return mpformatters[bfmt](number)
else
return number
end
else
return num
end
end
-- not in context a namespace
if _LUAVERSION < 5.2 then
utilities.strings.formatters.add(formatters,"texexp", [[texexp(...)]], "local texexp = metapost.texexp")
else
utilities.strings.formatters.add(formatters,"texexp", [[texexp(...)]], { texexp = metapost.texexp })
end
-- print(string.formatters["%!3.3!texexp!"](10.4345E30))
-- print(string.formatters["%3!texexp!"](10.4345E30,"%2.3f","%2i"))
-- print(string.formatters["%2!texexp!"](10.4345E30,"%2.3f"))
-- print(string.formatters["%1!texexp!"](10.4345E30))
-- print(string.formatters["%!texexp!"](10.4345E30))
-- local function test(fmt,n)
-- logs.report("mp format test","fmt: %s, n: %s, result: %s, \\exponent{%s}{%s}",fmt,n,
-- formatters[lpegmatch(cleaner,fmt)](n),
-- lpegmatch(enumber,formatters[lpegmatch(cleaner,fmt)](n))
-- )
-- end
--
-- test("@j","1e-8")
-- test("@j",1e-8)
-- test("@j","1e+8")
-- test("@j","1e-10")
-- test("@j",1e-10)
-- test("@j","1e+10")
-- test("@j","1e-12")
-- test("@j","1e+12")
-- test("@j","1e-0")
-- test("@j","1e+0")
-- test("@j","1")
-- test("@j test","1")
-- test("@j","-1")
-- test("@j","1e-102")
-- test("@1.4j","1e+102")
-- test("@j","1.2e+102")
-- test("@j","1.23e+102")
-- test("@j","1.234e+102")
local f_textext = formatters[ [[textext("%s")]] ]
local f_mthtext = formatters[ [[textext("\mathematics{%s}")]] ]
local f_exptext = formatters[ [[textext("\mathematics{%s\times10^{%s}}")]] ]
-- local cleaner = Cs((P("\\")/"\\\\" + P("@@")/"@" + P("@")/"%%" + P(1))^0)
local mpprint = mp.print
function mp.format(fmt,str) -- bah, this overloads mp.format in mlib-lua.lua
fmt = lpegmatch(cleaner,fmt)
mpprint(f_textext(formatters[fmt](metapost.untagvariable(str,false))))
end
function mp.formatted(fmt,...) -- svformat
fmt = lpegmatch(cleaner,fmt)
mpprint(f_textext(formatters[fmt](...)))
end
function mp.graphformat(fmt,num) -- nvformat
fmt = lpegmatch(cleaner,fmt)
local number = tonumber(num)
if number then
local base, exponent = lpegmatch(enumber,number)
if base and exponent then
mpprint(f_exptext(base,exponent))
else
mpprint(f_mthtext(num))
end
else
mpprint(f_textext(tostring(num)))
end
end
|