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
|
if not modules then modules = { } end modules ['mlib-lmp'] = {
version = 1.001,
comment = "companion to mlib-ctx.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files",
}
local aux = mp.aux
local mpnumeric = aux.numeric
local mppair = aux.pair
local mpquoted = aux.quoted
-- todo: use a stack?
do
local p = nil
local n = 0
local function mf_path_reset()
p = nil
n = 0
end
if CONTEXTLMTXMODE > 0 then
local scan = mp.scan
local scannumber = scan.number
local scanpath = scan.path
local function mf_path_length()
p = scanpath()
n = p and #p or 1
mpnumeric(n)
end
local function mf_path_point()
local i = scannumber()
if i > 0 and i <= n then
local pi = p[i]
mppair(pi[1],pi[2])
end
end
local function mf_path_left()
local i = scannumber()
if i > 0 and i <= n then
local pi = p[i]
mppair(pi[5],pi[6])
end
end
local function mf_path_right()
local i = scannumber()
if i > 0 and i <= n then
local pn
if i == 1 then
pn = p[2] or p[1]
else
pn = p[i+1] or p[1]
end
mppair(pn[3],pn[4])
end
end
local registerscript = metapost.registerscript
registerscript("pathreset", mf_path_reset)
registerscript("pathlengthof", mf_path_length)
registerscript("pathpointof", mf_path_point)
registerscript("pathleftof", mf_path_left)
registerscript("pathrightof", mf_path_right)
else
local get = mp.get
local mpgetpath = get.path
local function mf_path_length(name)
p = mpgetpath(name)
n = p and #p or 0
mpnumeric(n)
end
local function mf_path_point(i)
if i > 0 and i <= n then
local pi = p[i]
mppair(pi[1],pi[2])
end
end
local function mf_path_left(i)
if i > 0 and i <= n then
local pi = p[i]
mppair(pi[5],pi[6])
end
end
local function mf_path_right(i)
if i > 0 and i <= n then
local pn
if i == 1 then
pn = p[2] or p[1]
else
pn = p[i+1] or p[1]
end
mppair(pn[3],pn[4])
end
end
mp.mf_path_length = mf_path_length mp.pathlength = mf_path_length
mp.mf_path_point = mf_path_point mp.pathpoint = mf_path_point
mp.mf_path_left = mf_path_left mp.pathleft = mf_path_left
mp.mf_path_right = mf_path_right mp.pathright = mf_path_right
mp.mf_path_reset = mf_path_reset mp.pathreset = mf_path_reset
end
end
do
-- if needed we can optimize the sub (cache last split)
local utflen, utfsub = utf.len, utf.sub
function mp.utflen(s)
mpnumeric(utflen(s))
end
function mp.utfsub(s,f,t)
mpquoted(utfsub(s,f,t or f))
end
end
function mp.lmt_svg_include()
local name = metapost.getparameter { "svg", "filename" }
local mps = metapost.svgtomp {
data = name and name ~= "" and io.loaddata(name) or "",
}
mp.direct(mps)
end
|