참조 구현 :

c99 ungolfed 및 다양한 디버깅 frobs를 포함하여 2000 개 이상의 문자가 여전히 있습니다.

#include <stdio.h>
#include <string.h>

void printgrid(int m, int n, char grid[m][n]){
  fprintf(stderr,"===\n");
  for (int i=0; i<m; ++i){
    for (int j=0; j<n; ++j){
      switch (grid[i][j]) {
      case '\t': fputc('t',stderr); break;
      case '\0': fputc('0',stderr); break;
      case '\n': fputc('n',stderr); break;
      default: fputc(grid[i][j],stderr); break;
      }
    }
    fputc('\n',stderr);
  }
  fprintf(stderr,"===\n");
}

void readgrid(FILE *f, int m, int n, char grid[m][n]){
  int i = 0;
  int j = 0;
  int c = 0;
  while ( (c = fgetc(f)) != EOF) {
    if (c == '\n') {
      if (j != n) fprintf(stderr,"Short input line (%d)\n",i);
      i++;
      j=0;
    } else {
      grid[i][j++] = c;
    }
  }
}

int main(int argc, char** argv){
  const char *infname;
  FILE *inf=NULL;
  FILE *outf=stdout;

  /* deal with the command line */
  switch (argc) {
  case 3: /* two or more arguments. Take the second to be the output
         filename */
    if (!(outf = fopen(argv[2],"w"))) {
      fprintf(stderr,"%s: Couldn't open file '%s'. Exiting.",
          argv[0],argv[2]);
      return 2;
    }
    /* FALLTHROUGH */
  case 2: /* exactly one argument */
    infname = argv[1];
    if (!(inf = fopen(infname,"r"))) {
      fprintf(stderr,"%s: Couldn't open file '%s'. Exiting.",
          argv[0],argv[1]);
      return 1;
    };
    break;
  default:
    printf("%s: Number a crossword grid.\n\t%s <grid file> [<output file>]\n",
       argv[0],argv[0]);
    return 0;
  }

  /* Read the grid size from the first line */
  int m=0,n=0;
  char lbuf[81];
  fgets(lbuf,81,inf);
  sscanf(lbuf,"%d %d",&m,&n);

  /* Intialize the grid */
  char grid[m][n];
  for(int i=0; i<m; ++i) {
    for(int j=0; j<n; ++j) {
      grid[i][j]='#';
    }
  }

/*    printgrid(m,n,grid); */
  readgrid(inf,m,n,grid);
/*    printgrid(m,n,grid);  */

  /* loop through the grid  produce numbering output */
  fprintf(outf,"# Numbering for '%s'\n",infname);
  int num=1;
  for (int i=0; i<m; ++i){
    for (int j=0; j<n; ++j){
/*       fprintf(stderr,"\t\t\t (%d,%d): '%c' ['%c','%c']\n",i,j, */
/*        grid[i][j],grid[i-1][j],grid[i][j-1]); */
      if ( grid[i][j] != '#' &&
       ( (i == 0) || (j == 0) ||
         (grid[i-1][j] == '#') ||
         (grid[i][j-1] == '#') )
         ){
    fprintf(outf,"%d\t%d\t%d\n",num++,i+1,j+1);
      }
    }
  }
  fclose(outf);
  return 0;
}

답변

\documentclass{article}

\usepackage{perltex}
\usepackage{tikz}

\perlnewcommand{\readfile}[1]{
  open my $fh, '<', shift;
  ($rm,$cm) = split /\s+/, scalar <$fh>;
  @m = map { chomp; [ map { /\s/ ? 1 : 0 } split // ] } <$fh>;
  return "";
}

\perldo{
  $n=1;
  sub num {
    my ($r,$c) = @_;
    if ($r == 0) {
      return $n++;
    }
    if ($c == 0) {
      return $n++;
    }
    unless ($m[$r][$c-1] and $m[$r-1][$c]) {
      return $n++;
    }
    return;
  }
}

\perlnewcommand{\makegrid}[0]{
  my $scale = 1;
  my $return;
  my ($x,$y) = (0,$r*$scale);
  my ($ri,$ci) = (0,0);
  for my $r (@m) {
    for my $open (@$r) {
      my $f = $open ? '' : '[fill]';
      my $xx = $x + $scale;
      my $yy = $y + $scale;
      $return .= "\\draw $f ($x,$y) rectangle ($xx,$yy);\n";

      my $num = $open ? num($ri,$ci) : 0;
      if ( $num ) {
        $return .= "\\node [below right] at ($x, $yy) {$num};";
      }

      $x += $scale;
      $ci++;
    }
    $ci = 0;
    $x = 0;
    $ri++;
    $y -= $scale;
  }
  return $return;
}

\begin{document}
\readfile{grid.txt}

\begin{tikzpicture}
  \makegrid
\end{tikzpicture}

\end{document}

perltex --nosafe --latex=pdflatex grid.tex