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
|
#############################################################################
##
#A codefun.gi GUAVA Reinald Baart
#A &Jasper Cramwinckel
#A &Erik Roijackers
##
## This file contains non-dispatched functions to get info of codes
##
#############################################################################
##
#F GuavaToLeon( <C>, <file> ) . converts a code to a form Leon can read it
##
## converts a code in Guava format to a library in a format that is readable
## by Leon's programs.
##
InstallMethod(GuavaToLeon, "method for unrestricted code, filename",
true, [IsCode, IsString], 0,
function (C, file)
local w, vector, G, coord, n, k, TheMat, IR1SAVE, IR2SAVE;
G := GeneratorMat(C);
k := Dimension(C);
n := WordLength(C);
PrintTo(file, "LIBRARY code;\n");
AppendTo(file,"code=seq(",String(Size(LeftActingDomain(C))),",",String(k),
",",String(n),",seq(\n");
for vector in [1..k] do
for coord in [1..n-1] do
AppendTo(file,IntFFE(G[vector][coord]),",");
od;
AppendTo(file, IntFFE(G[vector][n]));
if vector < k then
AppendTo(file,",\n");
fi;
od;
AppendTo(file, "\n));\nFINISH;");
end);
#############################################################################
##
#F WeightHistogram ( <C> [, <height>] ) . . . . . plots the weights of <C>
##
## The maximum length of the columns is <height>. Default height is one
## third of the screen size.
##
InstallMethod(WeightHistogram,
"method for unrestricted code and screen height",
true, [IsCode, IsInt], 0,
function(C, height)
local wd, max, data, i, j, n, spaces, nr, Scr, char;
Scr := SizeScreen();
char := "*";
n := WordLength(C);
if n+2 >= Scr[1] then
Error("histogram does not fit on screen");
elif n+2 > Int(Scr[1] / 2) then
spaces := "";
nr := 0;
elif n+2 > Int(Scr[1] / 4) then
spaces := " ";
nr := 1;
else
spaces := " ";
nr := 2;
fi;
wd := WeightDistribution(C);
max := Maximum(wd);
if max < height then
height := max;
fi;
data := List(wd, w -> Int(w/max*height));
Print(max);
for i in [0..n*(nr+1)-Length(String(max))] do
Print("-");
od;
Print("\n");
for i in height - [0..height-1] do
for j in data do
if j >= i then
Print(Concatenation(char,spaces));
else
Print(Concatenation(" ",spaces));
fi;
od;
Print("\n");
od;
for i in [0..n] do
if wd[i+1] = 0 then
Print("-");
else
Print("+");
fi;
for j in [2..nr+1] do
Print("-");
od;
#Print("-");
od;
Print("\n");
for i in [0..n] do
Print(i mod 10,spaces);
od;
Print("\n ",spaces);
for i in [1..n] do
if i mod 10 = 0 then
Print(Int(i / 10),spaces);
else
Print(" ",spaces);
fi;
od;
Print("\n");
end);
InstallOtherMethod(WeightHistogram, "method for unrestricted code", true,
[IsCode], 0,
function(C)
local Scr;
Scr := SizeScreen();
WeightHistogram(C, Int(Scr[2]/3));
end);
#############################################################################
##
#F MergeHistories( <C>, <S> [, <C1> .. <Cn> ] ) . . . . . . list of strings
##
##
InstallGlobalFunction(MergeHistories,
function(arg)
local i, his, names;
if Length( arg ) > 1 then
names := "UVWXYZ";
his := [];
for i in [1..Length(arg)] do
Add(his, Concatenation( [ names[i] ], ": ", arg[i][1]) );
Append( his, List( arg[i]{[2..Length(arg[i])]}, line ->
Concatenation(" ", line ) ) );
od;
return his;
else
Error("usage: MergeHistories( <C1> , <C2> [, <C3> .. <Cn> ] )");
fi;
end);
|
