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#############################################################################
##
#F StringByFTLCollector . . . . . . . convert an ftl collector into a string
##
InstallMethod( String,
"from-the-left collector",
[ IsFromTheLeftCollectorRep ],
function( coll )
local name, n, S, i, j;
name := ValueOption( "name" );
if name = fail then
name := "ftl";
fi;
# Initialise the collector
n := coll![PC_NUMBER_OF_GENERATORS];
S := ShallowCopy( name );
Append( S, " := FromTheLeftCollector( " );
Append( S, String(n) );
Append( S, " );\n" );
# install power relations
for i in [1..n] do
if IsBound( coll![PC_EXPONENTS][i] ) then
Append( S, "SetRelativeOrder( " );
Append( S, name ); Append( S, ", " );
Append( S, String( i ) ); Append( S, ", " );
Append( S, String( coll![PC_EXPONENTS][i] ) );
Append( S, " );\n" );
Append( S, "SetPower( " );
Append( S, name ); Append( S, ", " );
Append( S, String(i) ); Append( S, ", " );
if IsBound( coll![PC_POWERS][i] ) then
Append( S, String( coll![PC_POWERS][i] ) );
else
Append( S, "[]" );
fi;
Append( S, " );\n" );
fi;
od;
# install conjugate relations
for j in [1..n] do
for i in [1..j-1] do
if IsBound(coll![PC_CONJUGATES][j][i]) then
Append( S, "SetConjugate( " );
Append( S, name ); Append( S, ", " );
Append( S, String(j) ); Append( S, ", " );
Append( S, String(i) ); Append( S, ", " );
Append( S, String( coll![PC_CONJUGATES][j][i] ) );
Append( S, " );\n" );
fi;
od;
od;
for j in [1..n] do
for i in [1..j-1] do
if IsBound(coll![PC_CONJUGATESINVERSE][j][i]) then
Append( S, "SetConjugate( " );
Append( S, name ); Append( S, ", " );
Append( S, String( j) ); Append( S, ", " );
Append( S, String(-i) ); Append( S, ", " );
Append( S, String( coll![PC_CONJUGATESINVERSE][j][i] ) );
Append( S, " );\n" );
fi;
od;
od;
for j in [1..n] do
for i in [1..j-1] do
if IsBound(coll![PC_INVERSECONJUGATES][j][i]) then
Append( S, "SetConjugate( " );
Append( S, name ); Append( S, ", " );
Append( S, String(-j) ); Append( S, ", " );
Append( S, String( i) ); Append( S, ", " );
Append( S, String( coll![PC_INVERSECONJUGATES][j][i] ) );
Append( S, " );\n" );
fi;
od;
od;
for j in [1..n] do
for i in [1..j-1] do
if IsBound(coll![PC_INVERSECONJUGATESINVERSE][j][i]) then
Append( S, "SetConjugate( " );
Append( S, name ); Append( S, ", " );
Append( S, String(-j) ); Append( S, ", " );
Append( S, String(-i) ); Append( S, ", " );
Append( S, String( coll![PC_INVERSECONJUGATESINVERSE][j][i] ) );
Append( S, " );\n" );
fi;
od;
od;
return S;
end );
#############################################################################
##
#F PcpUserInfo
##
BindGlobal( "PcpUserInfo", function()
local str, dir, date, out;
str := "";
dir := Directory( "./" );
out := OutputTextString( str, true );
## get user name
Process( dir, Filename( DirectoriesSystemPrograms(), "whoami" ),
InputTextNone(), out, [] );
## remove trailing newline character
str[ Length(str) ] := '@';
## get hostname name
Process( dir, Filename( DirectoriesSystemPrograms(), "hostname" ),
InputTextNone(), out, [] );
## remove trailing newline character
Unbind( str[ Length(str) ] );
Append( str, ": " );
## get date
Process( dir, Filename( DirectoriesSystemPrograms(), "date" ),
InputTextNone(), out, [] );
CloseStream( out );
return str;
end );
#############################################################################
##
#F FTLCollectorPrintTo( <file>, <name>, <coll> )
##
BindGlobal( "FTLCollectorPrintTo",
function( file, name, coll )
PrintTo( file, "##\n## ", PcpUserInfo(), "##\n" );
AppendTo( file, String( coll : name := name ) );
AppendTo( file, "\n\n" );
end );
#############################################################################
##
#F FTLCollectorAppendTo( <file>, <name>, <coll> )
##
BindGlobal( "FTLCollectorAppendTo",
function( file, name, coll )
AppendTo( file, "##\n## ", PcpUserInfo(), "##\n" );
AppendTo( file, String( coll : name := name ) );
AppendTo( file, "\n\n" );
end );
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