1 /*
2 * Copyright 1990 Sun Microsystems, Inc. All rights reserved.
3 * Use is subject to license terms.
4 */
5
6 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
7 /* All Rights Reserved */
8
9 /*
10 * Copyright (c) 1980 Regents of the University of California.
11 * All rights reserved. The Berkeley software License Agreement
12 * specifies the terms and conditions for redistribution.
13 */
14
15 #pragma ident "%Z%%M% %I% %E% SMI"
16
17 /* tu.c: draws horizontal lines */
18 # include "t..c"
19
20 void drawline(int, int, int, int, int, int);
21
22 void
makeline(int i,int c,int lintype)23 makeline(int i, int c, int lintype)
24 {
25 int cr, type, shortl;
26 type = thish(i,c);
27 if (type==0) return;
28 cr=c;
29 shortl = (table[i][c].col[0]=='\\');
30 if (c>0 && !shortl && thish(i,c-1) == type)return;
31 if (shortl==0)
32 for(cr=c; cr < ncol && (ctype(i,cr)=='s'||type==thish(i,cr)); cr++);
33 else
34 for(cr=c+1; cr<ncol && ctype(i,cr)=='s'; cr++);
35 drawline(i, c, cr-1, lintype, 0, shortl);
36 }
37
38 void
fullwide(int i,int lintype)39 fullwide(int i, int lintype)
40 {
41 int cr, cl;
42 if (!pr1403)
43 fprintf(tabout, ".nr %d \\n(.v\n.vs \\n(.vu-\\n(.sp\n", SVS);
44 cr= 0;
45 while (cr<ncol)
46 {
47 cl=cr;
48 while (i>0 && vspand(prev(i),cl,1))
49 cl++;
50 for(cr=cl; cr<ncol; cr++)
51 if (i>0 && vspand(prev(i),cr,1))
52 break;
53 if (cl<ncol)
54 drawline(i,cl,(cr<ncol?cr-1:cr),lintype,1,0);
55 }
56 fprintf(tabout, "\n");
57 if (!pr1403)
58 fprintf(tabout, ".vs \\n(%du\n", SVS);
59 }
60
61 void
drawline(int i,int cl,int cr,int lintype,int noheight,int shortl)62 drawline(int i, int cl, int cr, int lintype, int noheight, int shortl)
63 {
64 char *exhr, *exhl, *lnch;
65 int lcount, ln, linpos, oldpos, nodata;
66 lcount=0;
67 exhr=exhl= "";
68 switch(lintype)
69 {
70 case '-': lcount=1;break;
71 case '=': lcount = pr1403? 1 : 2; break;
72 case SHORTLINE: lcount=1; break;
73 }
74 if (lcount<=0) return;
75 nodata = cr-cl>=ncol || noheight || allh(i);
76 if (!nodata)
77 fprintf(tabout, "\\v'-.5m'");
78 for(ln=oldpos=0; ln<lcount; ln++)
79 {
80 linpos = 2*ln - lcount +1;
81 if (linpos != oldpos)
82 fprintf(tabout, "\\v'%dp'", linpos-oldpos);
83 oldpos=linpos;
84 if (shortl==0)
85 {
86 tohcol(cl);
87 if (lcount>1)
88 {
89 switch(interv(i,cl))
90 {
91 case TOP: exhl = ln==0 ? "1p" : "-1p"; break;
92 case BOT: exhl = ln==1 ? "1p" : "-1p"; break;
93 case THRU: exhl = "1p"; break;
94 }
95 if (exhl[0])
96 fprintf(tabout, "\\h'%s'", exhl);
97 }
98 else if (lcount==1)
99 {
100 switch(interv(i,cl))
101 {
102 case TOP: case BOT: exhl = "-1p"; break;
103 case THRU: exhl = "1p"; break;
104 }
105 if (exhl[0])
106 fprintf(tabout, "\\h'%s'", exhl);
107 }
108 if (lcount>1)
109 {
110 switch(interv(i,cr+1))
111 {
112 case TOP: exhr = ln==0 ? "-1p" : "+1p"; break;
113 case BOT: exhr = ln==1 ? "-1p" : "+1p"; break;
114 case THRU: exhr = "-1p"; break;
115 }
116 }
117 else if (lcount==1)
118 {
119 switch(interv(i,cr+1))
120 {
121 case TOP: case BOT: exhr = "+1p"; break;
122 case THRU: exhr = "-1p"; break;
123 }
124 }
125 }
126 else
127 fprintf(tabout, "\\h'|\\n(%du'", cl+CLEFT);
128 fprintf(tabout, "\\s\\n(%d",LSIZE);
129 if (linsize)
130 fprintf(tabout, "\\v'-\\n(%dp/6u'", LSIZE);
131 if (shortl)
132 fprintf(tabout, "\\l'|\\n(%du'", cr+CRIGHT);
133 else
134 {
135 lnch = "\\(ul";
136 if (pr1403)
137 lnch = lintype==2 ? "=" : "\\(ru";
138 if (cr+1>=ncol)
139 fprintf(tabout, "\\l'|\\n(TWu%s%s'", exhr,lnch);
140 else
141 fprintf(tabout, "\\l'(|\\n(%du+|\\n(%du)/2u%s%s'", cr+CRIGHT,
142 cr+1+CLEFT, exhr, lnch);
143 }
144 if (linsize)
145 fprintf(tabout, "\\v'\\n(%dp/6u'", LSIZE);
146 fprintf(tabout, "\\s0");
147 }
148 if (oldpos!=0)
149 fprintf(tabout, "\\v'%dp'", -oldpos);
150 if (!nodata)
151 fprintf(tabout, "\\v'+.5m'");
152 }
153
154 void
getstop(void)155 getstop(void)
156 {
157 int i,c,k,junk, stopp;
158 stopp=1;
159 for(i=0; i<MAXLIN; i++)
160 linestop[i]=0;
161 for(i=0; i<nlin; i++)
162 for(c=0; c<ncol; c++)
163 {
164 k = left(i,c,&junk);
165 if (k>=0 && linestop[k]==0)
166 linestop[k]= ++stopp;
167 }
168 if (boxflg || allflg || dboxflg)
169 linestop[0]=1;
170 }
171
172 int
left(int i,int c,int * lwidp)173 left(int i, int c, int *lwidp)
174 {
175 int kind, li, lj;
176 /* returns -1 if no line to left */
177 /* returns number of line where it starts */
178 /* stores into lwid the kind of line */
179 *lwidp=0;
180 kind = lefdata(i,c);
181 if (kind==0) return(-1);
182 if (i+1<nlin)
183 if (lefdata(next(i),c)== kind) return(-1);
184 while (i>=0 && lefdata(i,c)==kind)
185 i=prev(li=i);
186 if (prev(li)== -1) li=0;
187 *lwidp=kind;
188 for(lj= i+1; lj<li; lj++)
189 if (instead[lj] && strcmp(instead[lj], ".TH")==0)
190 return(li);
191 for(i= i+1; i<li; i++)
192 if (fullbot[i])
193 li=i;
194 return(li);
195 }
196
197 int
lefdata(int i,int c)198 lefdata(int i, int c)
199 {
200 int ck;
201 if (i>=nlin) i=nlin-1;
202 if (ctype(i,c) == 's')
203 {
204 for(ck=c; ctype(i,ck)=='s'; ck--);
205 if (thish(i,ck)==0)
206 return(0);
207 }
208 i =stynum[i];
209 i = lefline[i][c];
210 if (i>0) return(i);
211 if (dboxflg && c==0) return(2);
212 if (allflg)return(1);
213 if (boxflg && c==0) return(1);
214 return(0);
215 }
216
217 int
next(int i)218 next(int i)
219 {
220 while (i+1 <nlin)
221 {
222 i++;
223 if (!fullbot[i] && !instead[i]) break;
224 }
225 return(i);
226 }
227
228 int
prev(int i)229 prev(int i)
230 {
231 while (--i >=0 && (fullbot[i] || instead[i]))
232 ;
233 return(i);
234 }
235