docs/manual/subindex

   1 #!/usr/bin/awk -f
   2
   3 #
   4 # (c) K. Anton Feenstra 2001
   5 #
   6 # subindex v. 0.1 - 12 feb 2001
   7 #
   8 # reads tex index entries as generated by makeindex and
   9 # combines identical words into sub-entries
  10 #
  11
  12 BEGIN {
  13   n=0;
  14 }
  15
  16 /[{ ]Symbols[ }]/ {
  17   if ( substr(1,1,$0)!="%" )
  18     $0 = "% " $0;
  19 }
  20
  21 /^[ \t]*\\see/ {
  22   sub("^[ \t]*","");
  23   pp = pp $0;
  24   next;
  25 }
  26
  27 {
  28   sub(", \\\\see.*","",pp);
  29 }
  30
  31 function dump() {
  32   printf("%% %d %d %d %d |", mc, nc, mp, np);
  33   for(i=1;i<=nc;i++) printf(" %s",c[i]);
  34   printf(" |");
  35   for(i=1;i<=np;i++) printf(" %s",p[i]);
  36   printf(" |\n");
  37 }
  38
  39
  40 {
  41   mc=0;
  42   if ($1=="\\item") {
  43     for(i=1; $(i)!="\\hfill" && i<=NF; i++) {
  44       c[i]=$(i+1);
  45       sub(",$","",c[i]);
  46       if (i<=np && c[i]==p[i]) mc=i;
  47     }
  48     nc=i-2;
  49   } else {
  50     nc=0;
  51     mc=0;
  52   }
  53 #  if (mc) dump();
  54   if (mc && mc<=nc) {
  55     if (mc) {
  56       key=c[1];
  57       for(i=2; i<=mc; i++)
  58         key=key" "c[i];
  59     } else
  60       key="";
  61     if (key != pkey && mc<np)
  62       printf("  \\item %s \\hfill \\nopagebreak\n", key);
  63     pkey=key;
  64   }
  65   if (mp) m=mp; else m=mc;
  66   skey=p[m+1];
  67   for(i=m+2; i<=np; i++)
  68     skey=skey" "p[i];
  69   if (mc<np)
  70     for(i=1; i<=mp || i<=mc; i++) {
  71       sub("item "key" ", "subitem ", pp);
  72       sub("item "key", "skey, "subitem "skey" $\\sim$", pp);
  73       pp="  "pp;
  74     }
  75
  76   np=nc;
  77   mp=mc;
  78   for(i=1;i<=np;i++)
  79     p[i]=c[i];
  80 }
  81
  82 {
  83   if (NR>1) print pp;
  84   pp=$0;
  85 }
  86
  87 END {
  88   print pp;
  89 }
  90
  91 #last line