-/* $Id: term.c,v 1.156 2010/06/30 12:30:36 kristaps Exp $ */
+/* $Id: term.c,v 1.174 2010/10/02 15:15:55 schwarze Exp $ */
/*
- * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@bsd.lv>
+ * 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
#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);
p = calloc(1, sizeof(struct termp));
if (NULL == p) {
perror(NULL);
- exit(EXIT_FAILURE);
+ exit((int)MANDOCLEVEL_SYSERR);
}
p->enc = enc;
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 dv; /* temporary for visual pos calculations */
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 */
* an indentation, but can be, for tagged lists or columns, a
* small set of values.
*/
-
- assert(p->offset < p->rmargin);
-
- maxvis = (int)(p->rmargin - p->offset) - p->overstep < 0 ?
- /* LINTED */
- 0 : p->rmargin - p->offset - p->overstep;
- mmax = (int)(p->maxrmargin - p->offset) - p->overstep < 0 ?
- /* LINTED */
- 0 : p->maxrmargin - p->offset - p->overstep;
+ assert (p->rmargin > p->offset);
+ dv = p->rmargin - p->offset;
+ maxvis = (int)dv > p->overstep ? dv - (size_t)p->overstep : 0;
+ dv = p->maxrmargin - p->offset;
+ mmax = (int)dv > p->overstep ? dv - (size_t)p->overstep : 0;
bp = TERMP_NOBREAK & p->flags ? mmax : maxvis;
/*
* Indent the first line of a paragraph.
*/
- vbl = p->flags & TERMP_NOLPAD ? 0 : p->offset;
+ vbl = p->flags & TERMP_NOLPAD ? (size_t)0 : p->offset;
- vis = vend = i = 0;
+ vis = vend = 0;
+ i = 0;
while (i < (int)p->col) {
/*
* 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;
+ while (i < (int)p->col && '\t' == p->buf[i]) {
vend = (vis / p->tabwidth + 1) * p->tabwidth;
vbl += vend - vis;
vis = vend;
+ i++;
}
/*
* space is printed according to regular spacing rules).
*/
- /* 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;
/* Remove the p->overstep width. */
- bp += (int)/* LINTED */
- p->overstep;
+ bp += (size_t)p->overstep;
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)
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++;
- }
+ dv = (size_t)(i - j) * (*p->width)(p, ' ');
+ vbl += dv;
+ vend += dv;
break;
}
if (ASCII_NBRSP == p->buf[i]) {
p->viscol += (*p->width)(p, p->buf[i]);
}
}
- 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_HANG & p->flags) {
/* We need one blank after the tag. */
- p->overstep = /* LINTED */
- vis - maxvis + (*p->width)(p, ' ');
+ p->overstep = (int)(vis - maxvis + (*p->width)(p, ' '));
/*
* Behave exactly the same way as groff:
*/
if (p->overstep >= -1) {
assert((int)maxvis + p->overstep >= 0);
- /* LINTED */
- maxvis += p->overstep;
+ maxvis += (size_t)p->overstep;
} else
p->overstep = 0;
return;
/* Right-pad. */
- if (maxvis > vis + /* LINTED */
- ((TERMP_TWOSPACE & p->flags) ?
- (*p->width)(p, ' ') : 0)) {
+ if (maxvis > vis +
+ ((TERMP_TWOSPACE & p->flags) ? (*p->width)(p, ' ') : 0)) {
p->viscol += maxvis - vis;
(*p->advance)(p, maxvis - vis);
vis += (maxvis - vis);
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;
- rhs = chars_a2ascii(p->symtab, word, len, &sz);
+ rhs = chars_spec2str(p->symtab, word, len, &sz);
if (rhs)
encode(p, rhs, sz);
+ else if (DECO_SSPECIAL == d)
+ encode(p, word, len);
}
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);
}
term_word(struct termp *p, const char *word)
{
const char *sv, *seq;
- int sz;
size_t ssz;
enum roffdeco deco;
if ( ! (p->flags & TERMP_NONOSPACE))
p->flags &= ~TERMP_NOSPACE;
+ else
+ p->flags |= TERMP_NOSPACE;
- p->flags &= ~TERMP_SENTENCE;
-
- /* FIXME: use strcspn. */
+ p->flags &= ~(TERMP_SENTENCE | TERMP_IGNDELIM);
while (*word) {
- if ('\\' != *word) {
- encode(p, word, 1);
- word++;
+ if ((ssz = strcspn(word, "\\")) > 0)
+ encode(p, word, ssz);
+
+ word += ssz;
+ if ('\\' != *word)
continue;
- }
seq = ++word;
- sz = a2roffdeco(&deco, &seq, &ssz);
+ word += a2roffdeco(&deco, &seq, &ssz);
switch (deco) {
case (DECO_RESERVED):
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;
}
- word += sz;
if (DECO_NOSPACE == deco && '\0' == *word)
p->flags |= TERMP_NOSPACE;
}
* 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 */
p->buf = realloc(p->buf, p->maxcols);
if (NULL == p->buf) {
perror(NULL);
- exit(EXIT_FAILURE);
+ exit((int)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)
{
*/
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];
}
}
size_t
term_strlen(const struct termp *p, const char *cp)
{
- size_t sz;
+ size_t sz, ssz, rsz, i;
+ enum roffdeco d;
+ const char *seq, *rhs;
- for (sz = 0; *cp; cp++)
- sz += (*p->width)(p, *cp);
+ for (sz = 0; '\0' != *cp; )
+ /*
+ * Account for escaped sequences within string length
+ * calculations. This follows the logic in term_word()
+ * as we must calculate the width of produced strings.
+ */
+ if ('\\' == *cp) {
+ seq = ++cp;
+ cp += a2roffdeco(&d, &seq, &ssz);
+
+ switch (d) {
+ case (DECO_RESERVED):
+ rhs = chars_res2str
+ (p->symtab, seq, ssz, &rsz);
+ break;
+ case (DECO_SPECIAL):
+ /* FALLTHROUGH */
+ case (DECO_SSPECIAL):
+ rhs = chars_spec2str
+ (p->symtab, seq, ssz, &rsz);
+
+ /* Allow for one-char escapes. */
+ if (DECO_SSPECIAL != d || rhs)
+ break;
+
+ rhs = seq;
+ rsz = ssz;
+ break;
+ default:
+ rhs = NULL;
+ break;
+ }
+
+ if (rhs)
+ for (i = 0; i < rsz; i++)
+ sz += (*p->width)(p, *rhs++);
+ } else
+ sz += (*p->width)(p, *cp++);
return(sz);
}
+/* ARGSUSED */
size_t
term_vspan(const struct termp *p, const struct roffsu *su)
{
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