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
|
if not modules then modules = { } end modules ['syst-lua'] = {
version = 1.001,
comment = "companion to syst-lua.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local format, find, match, rep = string.format, string.find, string.match, string.rep
local tonumber = tonumber
local S, lpegmatch, lpegtsplitat = lpeg.S, lpeg.match, lpeg.tsplitat
commands = commands or { }
local commands = commands
local context = context
local csprint = context.sprint
local prtcatcodes = tex.prtcatcodes
function commands.writestatus(...) logs.status(...) end -- overloaded later
local ctx_firstoftwoarguments = context.firstoftwoarguments -- context.constructcsonly("firstoftwoarguments" )
local ctx_secondoftwoarguments = context.secondoftwoarguments -- context.constructcsonly("secondoftwoarguments")
local ctx_firstofoneargument = context.firstofoneargument -- context.constructcsonly("firstofoneargument" )
local ctx_gobbleoneargument = context.gobbleoneargument -- context.constructcsonly("gobbleoneargument" )
-- contextsprint(prtcatcodes,[[\ui_fo]]) -- ctx_firstofonearguments
-- contextsprint(prtcatcodes,[[\ui_go]]) -- ctx_gobbleonearguments
-- contextsprint(prtcatcodes,[[\ui_ft]]) -- ctx_firstoftwoarguments
-- contextsprint(prtcatcodes,[[\ui_st]]) -- ctx_secondoftwoarguments
function commands.doifelse(b)
if b then
ctx_firstoftwoarguments()
-- csprint(prtcatcodes,[[\ui_ft]]) -- ctx_firstoftwoarguments
else
ctx_secondoftwoarguments()
-- csprint(prtcatcodes,[[\ui_st]]) -- ctx_secondoftwoarguments
end
end
function commands.doif(b)
if b then
ctx_firstofoneargument()
-- context.__flushdirect(prtcatcodes,[[\ui_fo]]) -- ctx_firstofonearguments
else
ctx_gobbleoneargument()
-- context.__flushdirect(prtcatcodes,[[\ui_go]]) -- ctx_gobbleonearguments
end
end
function commands.doifnot(b)
if b then
ctx_gobbleoneargument()
-- csprint(prtcatcodes,[[\ui_go]]) -- ctx_gobbleonearguments
else
ctx_firstofoneargument()
-- csprint(prtcatcodes,[[\ui_fo]]) -- ctx_firstofonearguments
end
end
commands.testcase = commands.doifelse -- obsolete
function commands.boolcase(b)
context(b and 1 or 0)
end
function commands.doifelsespaces(str)
if find(str,"^ +$") then
ctx_firstoftwoarguments()
else
ctx_secondoftwoarguments()
end
end
local s = lpegtsplitat(",")
local h = { }
function commands.doifcommonelse(a,b) -- often the same test
local ha = h[a]
local hb = h[b]
if not ha then
ha = lpegmatch(s,a)
h[a] = ha
end
if not hb then
hb = lpegmatch(s,b)
h[b] = hb
end
local na = #ha
local nb = #hb
for i=1,na do
for j=1,nb do
if ha[i] == hb[j] then
ctx_firstoftwoarguments()
return
end
end
end
ctx_secondoftwoarguments()
end
function commands.doifinsetelse(a,b)
local hb = h[b]
if not hb then hb = lpegmatch(s,b) h[b] = hb end
for i=1,#hb do
if a == hb[i] then
ctx_firstoftwoarguments()
return
end
end
ctx_secondoftwoarguments()
end
local pattern = lpeg.patterns.validdimen
function commands.doifdimenstringelse(str)
if lpegmatch(pattern,str) then
ctx_firstoftwoarguments()
else
ctx_secondoftwoarguments()
end
end
function commands.firstinset(str)
local first = match(str,"^([^,]+),")
context(first or str)
end
function commands.ntimes(str,n)
context(rep(str,n or 1))
end
function commands.execute(str)
os.execute(str) -- wrapped in sandbox
end
-- function commands.write(n,str)
-- if n == 18 then
-- os.execute(str)
-- elseif n == 16 then
-- -- immediate
-- logs.report(str)
-- else
-- -- at the tex end we can still drop the write / also delayed vs immediate
-- context.writeviatex(n,str)
-- end
-- end
|
