tsize.c - plan9port - [fork] Plan 9 from user space
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       ---
       tsize.c (1724B)
       ---
            1 #include "e.h"
            2 #include <ctype.h>
            3 
            4 void setsize(char *p)        /* set size as found in p */
            5 {
            6         nszstack++;
            7         szstack[nszstack] = 0;                /* assume relative */
            8         if (*p == '+') {
            9                 ps += atoi(p+1);
           10                 if (szstack[nszstack-1] != 0)        /* propagate absolute size */
           11                         szstack[nszstack] = ps;
           12         } else if (*p == '-') {
           13                 ps -= atoi(p+1);
           14                 if (szstack[nszstack-1] != 0)
           15                         szstack[nszstack] = ps;
           16         } else if (isdigit((unsigned char)*p)) {
           17                 if (szstack[nszstack-1] == 0)
           18                         printf(".nr %d \\n(.s\n", 99-nszstack);
           19                 else
           20                         printf(".nr %d %d\n", 99-nszstack, ps);
           21                 szstack[nszstack] = ps = atoi(p);
           22         } else {
           23                 ERROR "illegal size %s ignored", p WARNING;
           24         }
           25         dprintf(".\tsetsize %s; ps = %d\n", p, ps);
           26 }
           27 
           28 void size(int p1, int p2)
           29 {
           30                 /* old size in p1, new in ps */
           31         yyval = p2;
           32         dprintf(".\tS%d <- \\s%d %d \\s%d; b=%g, h=%g\n",
           33                 (int)yyval, ps, p2, p1, ebase[yyval], eht[yyval]);
           34         if (szstack[nszstack] != 0) {
           35                 printf(".ds %d %s\\*(%d\\s\\n(%d\n", (int)yyval, ABSPS(ps), p2, 99-nszstack);
           36         } else
           37                 printf(".ds %d %s\\*(%d%s\n", (int)yyval, DPS(p1,ps), p2, DPS(ps,p1));
           38         nszstack--;
           39         ps = p1;
           40 }
           41 
           42 void globsize(void)
           43 {
           44         char temp[20];
           45 
           46         getstr(temp, sizeof(temp));
           47         if (temp[0] == '+') {
           48                 gsize += atoi(temp+1);
           49                 if (szstack[0] != 0)
           50                         szstack[0] = gsize;
           51         } else if (temp[0] == '-') {
           52                 gsize -= atoi(temp+1);
           53                 if (szstack[0] != 0)
           54                         szstack[0] = gsize;
           55         } else  if (isdigit((unsigned char)temp[0])) {
           56                 gsize = atoi(temp);
           57                 szstack[0] = gsize;
           58                 printf(".nr 99 \\n(.s\n");
           59         } else {
           60                 ERROR "illegal gsize %s ignored", temp WARNING;
           61         }
           62         yyval = eqnreg = 0;
           63         ps = gsize;
           64         if (gsize < 12 && !dps_set)                /* sub and sup size change */
           65                 deltaps = gsize / 3;
           66         else if (gsize < 20)
           67                 deltaps = gsize / 4;
           68         else
           69                 deltaps = gsize / 5;
           70 }