"sys/param.h is for kernel interface programs.

[mandoc.git] / term.c

diff --git a/term.c b/term.c
index cadde0ca654f709538ca243afcc32cdb2e0f9fb6..79a0f45f4786d8165d302a200aab7cb7027fd81b 100644 (file)
--- a/term.c
+++ b/term.c
@@ -1,6 +1,7 @@
-/*     $Id: term.c,v 1.143 2010/06/07 21:03:02 kristaps Exp $ */
+/*     $Id: term.c,v 1.169 2010/08/20 23:34:02 schwarze Exp $ */

 /*
 /*

- * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
+ * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2010 Ingo Schwarze <schwarze@openbsd.org>

  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above


@@ -26,63 +27,22 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

-#include <time.h>

 
 #include "mandoc.h"
 #include "chars.h"
 #include "out.h"
 #include "term.h"
 
 #include "mandoc.h"
 #include "chars.h"
 #include "out.h"
 #include "term.h"

-#include "man.h"
-#include "mdoc.h"

 #include "main.h"
 
 #include "main.h"
 

-#define        PS_CHAR_WIDTH     6
-#define        PS_CHAR_HEIGHT    12
-#define        PS_CHAR_TOPMARG  (792 - 24)
-#define        PS_CHAR_TOP      (PS_CHAR_TOPMARG - 36)
-#define        PS_CHAR_LEFT      36
-#define        PS_CHAR_BOTMARG   24
-#define        PS_CHAR_BOT      (PS_CHAR_BOTMARG + 36)
-
-static struct termp     *alloc(char *, enum termenc, enum termtype);
-static void              term_free(struct termp *);
-static void              spec(struct termp *, const char *, size_t);
+static void              spec(struct termp *, enum roffdeco,
+                               const char *, size_t);

 static void              res(struct termp *, const char *, size_t);
 static void              res(struct termp *, const char *, size_t);

-static void              buffera(struct termp *, const char *, size_t);

 static void              bufferc(struct termp *, char);
 static void              adjbuf(struct termp *p, size_t);
 static void              encode(struct termp *, const char *, size_t);
 static void              bufferc(struct termp *, char);
 static void              adjbuf(struct termp *p, size_t);
 static void              encode(struct termp *, const char *, size_t);

-static void              advance(struct termp *, size_t);
-static void              endline(struct termp *);
-static void              letter(struct termp *, char);
-static void              pageopen(struct termp *);
-
-
-void *
-ascii_alloc(char *outopts)
-{
-
-       return(alloc(outopts, TERMENC_ASCII, TERMTYPE_CHAR));
-}
-
-
-void *
-ps_alloc(void)
-{
-
-       return(alloc(NULL, TERMENC_ASCII, TERMTYPE_PS));
-}

 
 
 void
 
 
 void

-terminal_free(void *arg)
-{
-
-       term_free((struct termp *)arg);
-}
-
-
-static void

 term_free(struct termp *p)
 {
 
 term_free(struct termp *p)
 {
 


@@ -90,65 +50,11 @@ term_free(struct termp *p)
                free(p->buf);
        if (p->symtab)
                chars_free(p->symtab);
                free(p->buf);
        if (p->symtab)
                chars_free(p->symtab);

-       free(p);
-}
-
-
-/*
- * Push a single letter into our output engine.
- */
-static void
-letter(struct termp *p, char c)
-{
-       
-       if (TERMTYPE_CHAR == p->type) {
-               /*
-                * If using the terminal device, just push the letter
-                * out into the screen.
-                */
-               putchar(c);
-               return;
-       }
-
-       if ( ! (PS_INLINE & p->psstate)) {
-               /*
-                * If we're not in a PostScript "word" context, then
-                * open one now at the current cursor.
-                */
-               printf("%zu %zu moveto\n", p->pscol, p->psrow);
-               putchar('(');
-               p->psstate |= PS_INLINE;
-       }
-
-       /*
-        * We need to escape these characters as per the PostScript
-        * specification.  We would also escape non-graphable characters
-        * (like tabs), but none of them would get to this point and
-        * it's superfluous to abort() on them.
-        */

 
 

-       switch (c) {
-       case ('('):
-               /* FALLTHROUGH */
-       case (')'):
-               /* FALLTHROUGH */
-       case ('\\'):
-               putchar('\\');
-               break;
-       default:
-               break;
-       }
-
-       /* Write the character and adjust where we are on the page. */
-       putchar(c);
-       p->pscol += PS_CHAR_WIDTH;
+       free(p);

 }
 
 
 }
 
 

-/*
- * Begin a "terminal" context.  Since terminal encompasses PostScript,
- * the actual terminal, etc., there are a few things we can do here.
- */

 void
 term_begin(struct termp *p, term_margin head, 
                term_margin foot, const void *arg)
 void
 term_begin(struct termp *p, term_margin head, 
                term_margin foot, const void *arg)


@@ -157,64 +63,7 @@ term_begin(struct termp *p, term_margin head,
        p->headf = head;
        p->footf = foot;
        p->argf = arg;
        p->headf = head;
        p->footf = foot;
        p->argf = arg;

-
-       if (TERMTYPE_CHAR == p->type) {
-               /* Emit the header and be done. */
-               (*p->headf)(p, p->argf);
-               return;
-       }
-       
-       /*
-        * Emit the standard PostScript prologue, set our initial page
-        * position, then run pageopen() on the initial page.
-        */
-
-       printf("%s\n", "%!PS");
-       printf("%s\n", "/Courier");
-       printf("%s\n", "10 selectfont");
-
-       p->pspage = 1;
-       p->psstate = 0;
-       pageopen(p);
-}
-
-
-/*
- * Open a page.  This is only used for -Tps at the moment.  It opens a
- * page context, printing the header and the footer.  THE OUTPUT BUFFER
- * MUST BE EMPTY.  If it is not, output will ghost on the next line and
- * we'll be all gross and out of state.
- */
-static void
-pageopen(struct termp *p)
-{
-       
-       assert(TERMTYPE_PS == p->type);
-       assert(0 == p->psstate);
-
-       p->pscol = PS_CHAR_LEFT;
-       p->psrow = PS_CHAR_TOPMARG;
-       p->psstate |= PS_MARGINS;
-
-       (*p->headf)(p, p->argf);
-       endline(p);
-
-       p->psstate &= ~PS_MARGINS;
-       assert(0 == p->psstate);
-
-       p->pscol = PS_CHAR_LEFT;
-       p->psrow = PS_CHAR_BOTMARG;
-       p->psstate |= PS_MARGINS;
-
-       (*p->footf)(p, p->argf);
-       endline(p);
-
-       p->psstate &= ~PS_MARGINS;
-       assert(0 == p->psstate);
-
-       p->pscol = PS_CHAR_LEFT;
-       p->psrow = PS_CHAR_TOP;
-
+       (*p->begin)(p);

 }
 
 
 }
 
 


@@ -222,109 +71,22 @@ void
 term_end(struct termp *p)
 {
 
 term_end(struct termp *p)
 {
 

-       if (TERMTYPE_CHAR == p->type) {
-               (*p->footf)(p, p->argf);
-               return;
-       }
-
-       printf("%s\n", "%%END");
-}
-
-
-static void
-endline(struct termp *p)
-{
-
-       if (TERMTYPE_CHAR == p->type) {
-               putchar('\n');
-               return;
-       }
-
-       if (PS_INLINE & p->psstate) {
-               printf(") show\n");
-               p->psstate &= ~PS_INLINE;
-       } 
-
-       if (PS_MARGINS & p->psstate)
-               return;
-
-       p->pscol = PS_CHAR_LEFT;
-       if (p->psrow >= PS_CHAR_HEIGHT + PS_CHAR_BOT) {
-               p->psrow -= PS_CHAR_HEIGHT;
-               return;
-       }
-
-       /* 
-        * XXX: can't run pageopen() until we're certain a flushln() has
-        * occured, else the buf will reopen in an awkward state on the
-        * next line.
-        */
-       printf("showpage\n");
-       p->psrow = PS_CHAR_TOP;
-}
-
-
-/*
- * Advance the output engine by a certain amount of whitespace.
- */
-static void
-advance(struct termp *p, size_t len)
-{
-       size_t          i;
-
-       if (TERMTYPE_CHAR == p->type) {
-               /* Just print whitespace on the terminal. */
-               for (i = 0; i < len; i++)
-                       putchar(' ');
-               return;
-       }
-
-       if (PS_INLINE & p->psstate) {
-               /* Dump out any existing line scope. */
-               printf(") show\n");
-               p->psstate &= ~PS_INLINE;
-       }
-
-       p->pscol += len ? len * PS_CHAR_WIDTH : 0;
+       (*p->end)(p);

 }
 
 
 }
 
 

-static struct termp *
-alloc(char *outopts, enum termenc enc, enum termtype type)
+struct termp *
+term_alloc(enum termenc enc)

 {
        struct termp    *p;
 {
        struct termp    *p;

-       const char      *toks[2];
-       char            *v;
-       size_t           width;
-
-       toks[0] = "width";
-       toks[1] = NULL;

 
        p = calloc(1, sizeof(struct termp));
        if (NULL == p) {
                perror(NULL);
 
        p = calloc(1, sizeof(struct termp));
        if (NULL == p) {
                perror(NULL);

-               exit(EXIT_FAILURE);
+               exit(MANDOCLEVEL_SYSERR);

        }
 
        }
 

-       p->type = type;
-       p->tabwidth = 5;

        p->enc = enc;
        p->enc = enc;

-
-       width = 80;
-
-       while (outopts && *outopts)
-               switch (getsubopt(&outopts, UNCONST(toks), &v)) {
-               case (0):
-                       width = (size_t)atoi(v);
-                       break;
-               default:
-                       break;
-               }
-
-       /* Enforce some lower boundary. */
-       if (width < 60)
-               width = 60;
-       p->defrmargin = width - 2;

        return(p);
 }
 
        return(p);
 }
 


@@ -372,9 +134,10 @@ term_flushln(struct termp *p)
        size_t           vbl;   /* number of blanks to prepend to output */
        size_t           vend;  /* end of word visual position on output */
        size_t           bp;    /* visual right border position */
        size_t           vbl;   /* number of blanks to prepend to output */
        size_t           vend;  /* end of word visual position on output */
        size_t           bp;    /* visual right border position */

-       int              j;     /* temporary loop index */
-       int              jhy;   /* last hyphen before line overflow */
-       size_t           maxvis, mmax;
+       int              j;     /* temporary loop index for p->buf */
+       int              jhy;   /* last hyph before overflow w/r/t j */
+       size_t           maxvis; /* output position of visible boundary */
+       size_t           mmax; /* used in calculating bp */

 
        /*
         * First, establish the maximum columns of "visible" content.
 
        /*
         * First, establish the maximum columns of "visible" content.


@@ -399,23 +162,18 @@ term_flushln(struct termp *p)
         */
        vbl = p->flags & TERMP_NOLPAD ? 0 : p->offset;
 
         */
        vbl = p->flags & TERMP_NOLPAD ? 0 : p->offset;
 

-       /* 
-        * FIXME: if bp is zero, we still output the first word before
-        * breaking the line.
-        */
-

        vis = vend = i = 0;
        vis = vend = i = 0;

-       while (i < (int)p->col) {

 
 

+       while (i < (int)p->col) {

                /*
                /*

-                * Handle literal tab characters.
+                * Handle literal tab characters: collapse all
+                * subsequent tabs into a single huge set of spaces.

                 */
                 */

-               for (j = i; j < (int)p->col; j++) {
-                       if ('\t' != p->buf[j])
-                               break;
-                       vend = (vis/p->tabwidth+1)*p->tabwidth;
+               while (i < (int)p->col && '\t' == p->buf[i]) {
+                       vend = (vis / p->tabwidth + 1) * p->tabwidth;

                        vbl += vend - vis;
                        vis = vend;
                        vbl += vend - vis;
                        vis = vend;

+                       i++;

                }
 
                /*
                }
 
                /*


@@ -426,16 +184,24 @@ term_flushln(struct termp *p)
                 */
 
                /* LINTED */
                 */
 
                /* LINTED */

-               for (jhy = 0; j < (int)p->col; j++) {
+               for (j = i, jhy = 0; j < (int)p->col; j++) {

                        if ((j && ' ' == p->buf[j]) || '\t' == p->buf[j])
                                break;
                        if ((j && ' ' == p->buf[j]) || '\t' == p->buf[j])
                                break;

-                       if (8 != p->buf[j]) {
-                               if (vend > vis && vend < bp &&
-                                   ASCII_HYPH == p->buf[j])
-                                       jhy = j;
-                               vend++;
-                       } else
-                               vend--;
+
+                       /* Back over the the last printed character. */
+                       if (8 == p->buf[j]) {
+                               assert(j);
+                               vend -= (*p->width)(p, p->buf[j - 1]);
+                               continue;
+                       }
+
+                       /* Regular word. */
+                       /* Break at the hyphen point if we overrun. */
+                       if (vend > vis && vend < bp && 
+                                       ASCII_HYPH == p->buf[j])
+                               jhy = j;
+
+                       vend += (*p->width)(p, p->buf[j]);

                }
 
                /*
                }
 
                /*


@@ -444,10 +210,10 @@ term_flushln(struct termp *p)
                 */
                if (vend > bp && 0 == jhy && vis > 0) {
                        vend -= vis;
                 */
                if (vend > bp && 0 == jhy && vis > 0) {
                        vend -= vis;

-                       endline(p);
+                       (*p->endline)(p);

                        if (TERMP_NOBREAK & p->flags) {
                                p->viscol = p->rmargin;
                        if (TERMP_NOBREAK & p->flags) {
                                p->viscol = p->rmargin;

-                               advance(p, p->rmargin);
+                               (*p->advance)(p, p->rmargin);

                                vend += p->rmargin - p->offset;
                        } else {
                                p->viscol = 0;
                                vend += p->rmargin - p->offset;
                        } else {
                                p->viscol = 0;


@@ -461,12 +227,6 @@ term_flushln(struct termp *p)
                        p->overstep = 0;
                }
 
                        p->overstep = 0;
                }
 

-               /*
-                * Skip leading tabs, they were handled above.
-                */
-               while (i < (int)p->col && '\t' == p->buf[i])
-                       i++;
-

                /* Write out the [remaining] word. */
                for ( ; i < (int)p->col; i++) {
                        if (vend > bp && jhy > 0 && i > jhy)
                /* Write out the [remaining] word. */
                for ( ; i < (int)p->col; i++) {
                        if (vend > bp && jhy > 0 && i > jhy)


@@ -474,14 +234,14 @@ term_flushln(struct termp *p)
                        if ('\t' == p->buf[i])
                                break;
                        if (' ' == p->buf[i]) {
                        if ('\t' == p->buf[i])
                                break;
                        if (' ' == p->buf[i]) {

-                               while (' ' == p->buf[i]) {
-                                       vbl++;
+                               j = i;
+                               while (' ' == p->buf[i])

                                        i++;
                                        i++;

-                               }
+                               vbl += (i - j) * (*p->width)(p, ' ');

                                break;
                        }
                        if (ASCII_NBRSP == p->buf[i]) {
                                break;
                        }
                        if (ASCII_NBRSP == p->buf[i]) {

-                               vbl++;
+                               vbl += (*p->width)(p, ' ');

                                continue;
                        }
 
                                continue;
                        }
 


@@ -491,35 +251,42 @@ term_flushln(struct termp *p)
                         * so write preceding white space now.
                         */
                        if (vbl) {
                         * so write preceding white space now.
                         */
                        if (vbl) {

-                               advance(p, vbl);
+                               (*p->advance)(p, vbl);

                                p->viscol += vbl;
                                vbl = 0;
                        }
 
                                p->viscol += vbl;
                                vbl = 0;
                        }
 

-                       if (ASCII_HYPH == p->buf[i])
-                               letter(p, '-');
-                       else
-                               letter(p, p->buf[i]);
-
-                       p->viscol += 1;
+                       if (ASCII_HYPH == p->buf[i]) {
+                               (*p->letter)(p, '-');
+                               p->viscol += (*p->width)(p, '-');
+                       } else {
+                               (*p->letter)(p, p->buf[i]);
+                               p->viscol += (*p->width)(p, p->buf[i]);
+                       }

                }
                vend += vbl;
                vis = vend;
        }
 
                }
                vend += vbl;
                vis = vend;
        }
 

+       /*
+        * If there was trailing white space, it was not printed;
+        * so reset the cursor position accordingly.
+        */
+       vis -= vbl;
+

        p->col = 0;
        p->overstep = 0;
 
        if ( ! (TERMP_NOBREAK & p->flags)) {
                p->viscol = 0;
        p->col = 0;
        p->overstep = 0;
 
        if ( ! (TERMP_NOBREAK & p->flags)) {
                p->viscol = 0;

-               endline(p);
+               (*p->endline)(p);

                return;
        }
 
        if (TERMP_HANG & p->flags) {
                /* We need one blank after the tag. */
                p->overstep = /* LINTED */
                return;
        }
 
        if (TERMP_HANG & p->flags) {
                /* We need one blank after the tag. */
                p->overstep = /* LINTED */

-                       vis - maxvis + 1;
+                       vis - maxvis + (*p->width)(p, ' ');

 
                /*
                 * Behave exactly the same way as groff:
 
                /*
                 * Behave exactly the same way as groff:


@@ -543,14 +310,15 @@ term_flushln(struct termp *p)
 
        /* Right-pad. */
        if (maxvis > vis + /* LINTED */
 
        /* Right-pad. */
        if (maxvis > vis + /* LINTED */

-                       ((TERMP_TWOSPACE & p->flags) ? 1 : 0)) {
+                       ((TERMP_TWOSPACE & p->flags) ? 
+                        (*p->width)(p, ' ') : 0)) {

                p->viscol += maxvis - vis;
                p->viscol += maxvis - vis;

-               advance(p, maxvis - vis);
+               (*p->advance)(p, maxvis - vis);

                vis += (maxvis - vis);
        } else {        /* ...or newline break. */
                vis += (maxvis - vis);
        } else {        /* ...or newline break. */

-               endline(p);
+               (*p->endline)(p);

                p->viscol = p->rmargin;
                p->viscol = p->rmargin;

-               advance(p, p->rmargin);
+               (*p->advance)(p, p->rmargin);

        }
 }
 
        }
 }
 


@@ -586,19 +354,21 @@ term_vspace(struct termp *p)
 
        term_newln(p);
        p->viscol = 0;
 
        term_newln(p);
        p->viscol = 0;

-       endline(p);
+       (*p->endline)(p);

 }
 
 
 static void
 }
 
 
 static void

-spec(struct termp *p, const char *word, size_t len)
+spec(struct termp *p, enum roffdeco d, const char *word, size_t len)

 {
        const char      *rhs;
        size_t           sz;
 
 {
        const char      *rhs;
        size_t           sz;
 

-       rhs = chars_a2ascii(p->symtab, word, len, &sz);
+       rhs = chars_spec2str(p->symtab, word, len, &sz);

        if (rhs) 
                encode(p, rhs, sz);
        if (rhs) 
                encode(p, rhs, sz);

+       else if (DECO_SSPECIAL == d)
+               encode(p, word, len);

 }
 
 
 }
 
 


@@ -608,7 +378,7 @@ res(struct termp *p, const char *word, size_t len)
        const char      *rhs;
        size_t           sz;
 
        const char      *rhs;
        size_t           sz;
 

-       rhs = chars_a2res(p->symtab, word, len, &sz);
+       rhs = chars_res2str(p->symtab, word, len, &sz);

        if (rhs)
                encode(p, rhs, sz);
 }
        if (rhs)
                encode(p, rhs, sz);
 }


@@ -719,24 +489,30 @@ term_word(struct termp *p, const char *word)
                }
 
        if ( ! (TERMP_NOSPACE & p->flags)) {
                }
 
        if ( ! (TERMP_NOSPACE & p->flags)) {

-               bufferc(p, ' ');
-               if (TERMP_SENTENCE & p->flags)
+               if ( ! (TERMP_KEEP & p->flags)) {
+                       if (TERMP_PREKEEP & p->flags)
+                               p->flags |= TERMP_KEEP;

                        bufferc(p, ' ');
                        bufferc(p, ' ');

+                       if (TERMP_SENTENCE & p->flags)
+                               bufferc(p, ' ');
+               } else
+                       bufferc(p, ASCII_NBRSP);

        }
 
        if ( ! (p->flags & TERMP_NONOSPACE))
                p->flags &= ~TERMP_NOSPACE;
        }
 
        if ( ! (p->flags & TERMP_NONOSPACE))
                p->flags &= ~TERMP_NOSPACE;

+       else
+               p->flags |= TERMP_NOSPACE;

 
        p->flags &= ~TERMP_SENTENCE;
 
 
        p->flags &= ~TERMP_SENTENCE;
 

-       /* FIXME: use strcspn. */
-

        while (*word) {
        while (*word) {

-               if ('\\' != *word) {
-                       encode(p, word, 1);
-                       word++;
+               if ((ssz = strcspn(word, "\\")) > 0)
+                       encode(p, word, ssz);
+
+               word += ssz;
+               if ('\\' != *word)

                        continue;
                        continue;

-               }

 
                seq = ++word;
                sz = a2roffdeco(&deco, &seq, &ssz);
 
                seq = ++word;
                sz = a2roffdeco(&deco, &seq, &ssz);


@@ -746,7 +522,9 @@ term_word(struct termp *p, const char *word)
                        res(p, seq, ssz);
                        break;
                case (DECO_SPECIAL):
                        res(p, seq, ssz);
                        break;
                case (DECO_SPECIAL):

-                       spec(p, seq, ssz);
+                       /* FALLTHROUGH */
+               case (DECO_SSPECIAL):
+                       spec(p, deco, seq, ssz);

                        break;
                case (DECO_BOLD):
                        term_fontrepl(p, TERMFONT_BOLD);
                        break;
                case (DECO_BOLD):
                        term_fontrepl(p, TERMFONT_BOLD);


@@ -773,7 +551,7 @@ term_word(struct termp *p, const char *word)
         * Note that we don't process the pipe: the parser sees it as
         * punctuation, but we don't in terms of typography.
         */
         * Note that we don't process the pipe: the parser sees it as
         * punctuation, but we don't in terms of typography.
         */

-       if (sv[0] && 0 == sv[1])
+       if (sv[0] && '\0' == sv[1])

                switch (sv[0]) {
                case('('):
                        /* FALLTHROUGH */
                switch (sv[0]) {
                case('('):
                        /* FALLTHROUGH */


@@ -798,23 +576,11 @@ adjbuf(struct termp *p, size_t sz)
        p->buf = realloc(p->buf, p->maxcols);
        if (NULL == p->buf) {
                perror(NULL);
        p->buf = realloc(p->buf, p->maxcols);
        if (NULL == p->buf) {
                perror(NULL);

-               exit(EXIT_FAILURE);
+               exit(MANDOCLEVEL_SYSERR);

        }
 }
 
 
        }
 }
 
 

-static void
-buffera(struct termp *p, const char *word, size_t sz)
-{
-
-       if (p->col + sz >= p->maxcols) 
-               adjbuf(p, p->col + sz);
-
-       memcpy(&p->buf[(int)p->col], word, sz);
-       p->col += sz;
-}
-
-

 static void
 bufferc(struct termp *p, char c)
 {
 static void
 bufferc(struct termp *p, char c)
 {


@@ -838,33 +604,59 @@ encode(struct termp *p, const char *word, size_t sz)
         * character by character.
         */
 
         * character by character.
         */
 

-       if (TERMTYPE_PS == p->type) {
-               buffera(p, word, sz);
-               return;
-       } else if (TERMFONT_NONE == (f = term_fonttop(p))) {
-               buffera(p, word, sz);
+       if (TERMFONT_NONE == (f = term_fonttop(p))) {
+               if (p->col + sz >= p->maxcols) 
+                       adjbuf(p, p->col + sz);
+               memcpy(&p->buf[(int)p->col], word, sz);
+               p->col += sz;

                return;
        }
 
                return;
        }
 

+       /* Pre-buffer, assuming worst-case. */
+
+       if (p->col + 1 + (sz * 3) >= p->maxcols)
+               adjbuf(p, p->col + 1 + (sz * 3));
+

        for (i = 0; i < (int)sz; i++) {
                if ( ! isgraph((u_char)word[i])) {
        for (i = 0; i < (int)sz; i++) {
                if ( ! isgraph((u_char)word[i])) {

-                       bufferc(p, word[i]);
+                       p->buf[(int)p->col++] = word[i];

                        continue;
                }
 
                if (TERMFONT_UNDER == f)
                        continue;
                }
 
                if (TERMFONT_UNDER == f)

-                       bufferc(p, '_');
+                       p->buf[(int)p->col++] = '_';

                else
                else

-                       bufferc(p, word[i]);
+                       p->buf[(int)p->col++] = word[i];

 
 

-               bufferc(p, 8);
-               bufferc(p, word[i]);
+               p->buf[(int)p->col++] = 8;
+               p->buf[(int)p->col++] = word[i];

        }
 }
 
 
 size_t
        }
 }
 
 
 size_t

-term_vspan(const struct roffsu *su)
+term_len(const struct termp *p, size_t sz)
+{
+
+       return((*p->width)(p, ' ') * sz);
+}
+
+
+size_t
+term_strlen(const struct termp *p, const char *cp)
+{
+       size_t           sz;
+
+       for (sz = 0; *cp; cp++)
+               sz += (*p->width)(p, *cp);
+
+       return(sz);
+}
+
+
+/* ARGSUSED */
+size_t
+term_vspan(const struct termp *p, const struct roffsu *su)

 {
        double           r;
 
 {
        double           r;
 


@@ -900,41 +692,13 @@ term_vspan(const struct roffsu *su)
 
 
 size_t
 
 
 size_t

-term_hspan(const struct roffsu *su)
+term_hspan(const struct termp *p, const struct roffsu *su)

 {
 {

-       double           r;
+       double           v;

 
 

-       /* XXX: CM, IN, and PT are approximations. */
-
-       switch (su->unit) {
-       case (SCALE_CM):
-               r = 4 * su->scale;
-               break;
-       case (SCALE_IN):
-               /* XXX: this is an approximation. */
-               r = 10 * su->scale;
-               break;
-       case (SCALE_PC):
-               r = (10 * su->scale) / 6;
-               break;
-       case (SCALE_PT):
-               r = (10 * su->scale) / 72;
-               break;
-       case (SCALE_MM):
-               r = su->scale / 1000; /* FIXME: double-check. */
-               break;
-       case (SCALE_VS):
-               r = su->scale * 2 - 1; /* FIXME: double-check. */
-               break;
-       default:
-               r = su->scale;
-               break;
-       }
-
-       if (r < 0.0)
-               r = 0.0;
-       return((size_t)/* LINTED */
-                       r);
+       v = ((*p->hspan)(p, su));
+       if (v < 0.0)
+               v = 0.0;
+       return((size_t) /* LINTED */
+                       v);

 }
 }

-
-