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#include "macaulay2.h"
#include <assert.h>
#include <unistd.h>
#include "printer.h"
#include "parser.h"
#include "programs.h"
//--------------------------------------------------
// Pipe
//--------------------------------------------------
Pipe::Pipe()
{
int r;
r=pipe(fdM2Input);
assert(r==0);
r=pipe(fdM2Output);
assert(r==0);
int pid1=fork();
if(pid1==0)//child
{
fprintf(stderr,"Child\n");
int r;
r=dup2(fdM2Input[0],fileno(stdin));
assert(r>=0);
r=dup2(fdM2Output[1],fileno(stdout));
assert(r>=0);
static char M2Name[1024];
sprintf(M2Name,"%s",programNameM2);//"M2";
char *argv[2];
argv[0]=M2Name;
argv[1]=0;
execvp(argv[0], argv);
assert(0);
}
else //parent
{
fprintf(stderr,"Parent\n");
pipeInput=fdopen(fdM2Input[1],"w");
assert(pipeInput);
pipeOutput=fdopen(fdM2Output[0],"r");
assert(pipeOutput);
}
}
Pipe::~Pipe()
{
//fclose?
fclose(pipeInput);
fclose(pipeOutput);
}
//--------------------------------------------------
// Macaulay2Pipe
//--------------------------------------------------
Macaulay2Pipe::Macaulay2Pipe():
printer(pipeInput)
{
readLine();
}
Macaulay2Pipe::~Macaulay2Pipe()
{
fprintf(pipeInput,"exit\n");
/* while(!feof(pipeOutput))
{
fprintf(stdout,"%c ",(getc(pipeOutput)));
}
*/
}
void Macaulay2Pipe::skipStartOfLine()
{
int c;
do
{
c=fgetc(pipeOutput);
if(c==EOF)
{
fprintf(stderr,"EOF\n");
}
// fprintf(stderr,"skipStartOfLine c=\'%c\',%i\n",c,c);
}
while(c!='=');
}
char *Macaulay2Pipe::readLine()
{
static char line[2048];
fgets(line,2048,pipeOutput);
assert(line[strlen(line)-1]=='\n');
// fprintf(stderr,"readLine:%s",line);
return line;
}
int Macaulay2Pipe::readInt()
{
char *line=readLine();
while(*line!=0 && *line!='=')line++;
assert(*line!=0);
int ret;
sscanf(line+1,"%i",&ret);
return ret;
}
bool Macaulay2Pipe::readBool()
{
char *line=readLine();
while(*line!=0 && *line!='=')line++;
assert(*line!=0);
int ret;
return 'f'!=line[2];
}
int Macaulay2Pipe::getPdimCokerGensMonomial(gbasis const &monomialIdeal)
{
fprintf(pipeInput,"pdim coker gens monomialIdeal ");
printer.printMonomialIdeal(monomialIdeal);
fprintf(pipeInput,"\n");
fflush(pipeInput);
readLine();
readLine();
int pdim=readInt();
readLine();
return pdim;
}
bool Macaulay2Pipe::isHomogeneousIdeal(gbasis &ideal)
{
fprintf(pipeInput,"isHomogeneous ideal ");
printer.printGroebnerBasis(ideal);
fprintf(pipeInput,"\n");
fflush(pipeInput);
readLine();
readLine();
int pdim=readBool();
readLine();
return pdim;
}
void Macaulay2Pipe::setPolynomialRing(int numberOfVariables)
{
fprintf(pipeInput,"R = ZZ/32003[");
if(numberOfVariables>26)
{
fprintf(stderr,"Variable index out of range!\n");
assert(0);
}
for(int i=0;i<numberOfVariables;i++)fprintf(pipeInput,(i==0)? "%c":",%c",i+'a');
fprintf(pipeInput,"]\n");
fflush(pipeInput);
readLine();
readLine();
readLine();
readLine();
readLine();
readLine();
}
void Macaulay2Pipe::setPolynomialRing(gbasis const &g)
{
assert(g.begin()!=g.end());
setPolynomialRing(g.begin()->size());
}
StandardPairList Macaulay2Pipe::standardPairs(gbasis &monomialIdeal)
{
assert(monomialIdeal.begin()!=monomialIdeal.end());
StandardPairList s;
setPolynomialRing(monomialIdeal);
fprintf(pipeInput,"toString standardPairs monomialIdeal ");
printer.printMonomialIdeal(monomialIdeal);
fprintf(pipeInput,"\n");
fflush(pipeInput);
skipStartOfLine();
// skipStartOfLine();
return FileParser(pipeOutput).parseStandardPairList(monomialIdeal.begin()->size());
}
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