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
|
exsh_texprintlines = function(s)
for line in s:gmatch("[^\n]+") do
tex.print(line)
end
end
solution = function(sol)
if type(sol) ~= "string" then
local solt = sol
sol = "["
if solt.idea then
sol = sol .. "idea,"
end
if solt.name then
sol = sol .. "strings/solution={"..solt.name.."},"
end
sol = sol .. "] " .. (solt.text or "")
end
return [[\begin{solution}]]..sol..[[\end{solution}]]
end
subexercise = function(se)
local pts,p,bp = ""
local sols = ""
if type(se) ~= "string" then
local set = se
local po = ""
if set.pointoptions then
po = po .. set.pointoptions
end
p,bp = set.points,set.bonuspoints
if p and bp then
pts = [[\points[]] .. po .. "]{" .. set.points .. "+" ..
set.bonuspoints .. "}"
elseif bp then
pts = [[\points[bonus,]] .. po .. "]{" .. set.bonuspoints .. "}"
elseif p then
pts = [[\points[]] .. po .. "]{" .. set.points .. "}"
end
if set.solution then
sols = sols .. solution(set.solution)
end
if set.altsolutions then
for _,sol in ipairs(set.altsolutions) do
sols = sols .. solution(sol)
end
end
se = "["
if set.options then
se = se .. set.options
end
se = se .. "]{" .. (set.task or "") .. "}"
else
se = "{" .. se .. "}"
end
return [[\subtask]]..se .. pts .. sols, p, bp
end
exercise = function(ex)
local subex = ""
local pts,bpts = 0,0
if ex.subexercises then
subex = [[\begin{subtasks}]]
for _,se in ipairs(ex.subexercises) do
local s,p,bp = subexercise(se)
subex = subex .. s
pts = pts + (p or 0)
bpts = bpts + (bp or 0)
end
subex = subex .. [[\end{subtasks}]]
end
if ex.points and ex.points == "sum" then
if pts > 0 and bpts > 0 then
pts = pts .. "+" .. bpts
elseif bpts > 0 then --and pts = 0
pts = bpts
ex.options = (ex.options or "") .. ",bonus"
--else bpts = 0 thus pts is all points
end
else
pts = ex.points
end
local ece = [[\begin{exercise}[]]
if ex.firstline then
ece = ece .. [[firstline={]] .. ex.firstline .. [[},]]
end
if pts then
ece = ece .. [[points={]] .. pts .. [[},]]
end
if ex.name then
ece = ece .. [[name={]] .. ex.name .. [[},]]
end
if ex.options then
ece = ece .. ex.options .. ","
end
ece = ece .. "]{}"
if ex.task then
ece = ece .. [[\begin{maintask}]] .. ex.task
.. [[\end{maintask}]]
end
if ex.solution then
ece = ece .. solution(ex.solution)
end
if ex.altsolutions then
for _,sol in ipairs(ex.altsolutions) do
ece = ece .. solution(sol)
end
end
ece = ece .. subex
ece = ece .. "\n" .. [[\end{exercise}]]
return ece
end
|
