Clean up some tight spots in mandoc's default mode: pessimistically

[mandoc.git] / term.c

diff --git a/term.c b/term.c
index de8c3380f9822e3532182e4982663c886c414b89..603a6a34253131999ab906ecd46fbb1a6ba5e501 100644 (file)
--- a/term.c
+++ b/term.c
@@ -1,4 +1,4 @@
-/*     $Id: term.c,v 1.162 2010/07/17 12:01:43 kristaps Exp $ */
+/*     $Id: term.c,v 1.165 2010/07/26 21:58:41 kristaps Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010 Ingo Schwarze <schwarze@openbsd.org>
@@ -34,9 +34,9 @@
 #include "term.h"
 #include "main.h"
 
-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              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);
@@ -241,10 +241,10 @@ term_flushln(struct termp *p)
                        if ('\t' == p->buf[i])
                                break;
                        if (' ' == p->buf[i]) {
-                               while (' ' == p->buf[i]) {
-                                       vbl += (*p->width)(p, p->buf[i]);
+                               j = i;
+                               while (' ' == p->buf[i])
                                        i++;
-                               }
+                               vbl += (i - j) * (*p->width)(p, ' ');
                                break;
                        }
                        if (ASCII_NBRSP == p->buf[i]) {
@@ -360,7 +360,7 @@ term_vspace(struct termp *p)
 
 
 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;
@@ -368,6 +368,8 @@ spec(struct termp *p, const char *word, size_t len)
        rhs = chars_spec2str(p->symtab, word, len, &sz);
        if (rhs) 
                encode(p, rhs, sz);
+       else if (DECO_SSPECIAL == d)
+               encode(p, word, len);
 }
 
 
@@ -519,7 +521,9 @@ term_word(struct termp *p, const char *word)
                        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);
@@ -576,18 +580,6 @@ adjbuf(struct termp *p, size_t sz)
 }
 
 
-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)
 {
@@ -612,23 +604,31 @@ encode(struct termp *p, const char *word, size_t sz)
         */
 
        if (TERMFONT_NONE == (f = term_fonttop(p))) {
-               buffera(p, word, sz);
+               if (p->col + sz >= p->maxcols) 
+                       adjbuf(p, p->col + sz);
+               memcpy(&p->buf[(int)p->col], word, sz);
+               p->col += sz;
                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])) {
-                       bufferc(p, word[i]);
+                       p->buf[(int)p->col++] = word[i];
                        continue;
                }
 
                if (TERMFONT_UNDER == f)
-                       bufferc(p, '_');
+                       p->buf[(int)p->col++] = '_';
                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];
        }
 }