-/* $Id: term.c,v 1.215 2013/12/31 18:07:42 schwarze Exp $ */
+/* $Id: term.c,v 1.223 2014/04/23 21:06:41 schwarze Exp $ */
/*
* Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2010, 2011, 2012, 2013 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2010-2014 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 <assert.h>
#include <ctype.h>
-#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mandoc.h"
+#include "mandoc_aux.h"
#include "out.h"
#include "term.h"
#include "main.h"
static void encode(struct termp *, const char *, size_t);
static void encode1(struct termp *, int);
+
void
term_free(struct termp *p)
{
free(p);
}
-
void
-term_begin(struct termp *p, term_margin head,
+term_begin(struct termp *p, term_margin head,
term_margin foot, const void *arg)
{
(*p->begin)(p);
}
-
void
term_end(struct termp *p)
{
}
/*
- * Flush a line of text. A "line" is loosely defined as being something
- * that should be followed by a newline, regardless of whether it's
- * broken apart by newlines getting there. A line can also be a
- * fragment of a columnar list (`Bl -tag' or `Bl -column'), which does
- * not have a trailing newline.
- *
+ * Flush a chunk of text. By default, break the output line each time
+ * the right margin is reached, and continue output on the next line
+ * at the same offset as the chunk itself. By default, also break the
+ * output line at the end of the chunk.
* The following flags may be specified:
*
- * - TERMP_NOBREAK: this is the most important and is used when making
- * columns. In short: don't print a newline and instead expect the
- * next call to do the padding up to the start of the next column.
- * p->trailspace may be set to 0, 1, or 2, depending on how many
- * space characters are required at the end of the column.
- *
- * - TERMP_DANGLE: don't newline when TERMP_NOBREAK is specified and
- * the line is overrun, and don't pad-right if it's underrun.
- *
- * - TERMP_HANG: like TERMP_DANGLE, but doesn't newline when
- * overrunning, instead save the position and continue at that point
- * when the next invocation.
- *
- * In-line line breaking:
- *
- * If TERMP_NOBREAK is specified and the line overruns the right
- * margin, it will break and pad-right to the right margin after
- * writing. If maxrmargin is violated, it will break and continue
- * writing from the right-margin, which will lead to the above scenario
- * upon exit. Otherwise, the line will break at the right margin.
+ * - TERMP_NOBREAK: Do not break the output line at the right margin,
+ * but only at the max right margin. Also, do not break the output
+ * line at the end of the chunk, such that the next call can pad to
+ * the next column. However, if less than p->trailspace blanks,
+ * which can be 0, 1, or 2, remain to the right margin, the line
+ * will be broken.
+ * - TERMP_BRIND: If the chunk does not fit and the output line has
+ * to be broken, start the next line at the right margin instead
+ * of at the offset. Used together with TERMP_NOBREAK for the tags
+ * in various kinds of tagged lists.
+ * - TERMP_DANGLE: Do not break the output line at the right margin,
+ * append the next chunk after it even if this one is too long.
+ * To be used together with TERMP_NOBREAK.
+ * - TERMP_HANG: Like TERMP_DANGLE, and also suppress padding before
+ * the next chunk if this column is not full.
*/
void
term_flushln(struct termp *p)
/* Regular word. */
/* Break at the hyphen point if we overrun. */
- if (vend > vis && vend < bp &&
- ASCII_HYPH == p->buf[j])
+ if (vend > vis && vend < bp &&
+ (ASCII_HYPH == p->buf[j] ||
+ ASCII_BREAK == p->buf[j]))
jhy = j;
+ /*
+ * Hyphenation now decided, put back a real
+ * hyphen such that we get the correct width.
+ */
+ if (ASCII_HYPH == p->buf[j])
+ p->buf[j] = '-';
+
vend += (*p->width)(p, p->buf[j]);
}
vend -= vis;
(*p->endline)(p);
p->viscol = 0;
- if (TERMP_NOBREAK & p->flags) {
+ if (TERMP_BRIND & p->flags) {
vbl = p->rmargin;
vend += p->rmargin - p->offset;
} else
vbl += (*p->width)(p, ' ');
continue;
}
+ if (ASCII_BREAK == p->buf[i])
+ continue;
/*
* Now we definitely know there will be
vbl = 0;
}
- if (ASCII_HYPH == p->buf[i]) {
- (*p->letter)(p, '-');
- p->viscol += (*p->width)(p, '-');
- continue;
- }
-
(*p->letter)(p, p->buf[i]);
if (8 == p->buf[i])
p->viscol -= (*p->width)(p, p->buf[i-1]);
- else
+ else
p->viscol += (*p->width)(p, p->buf[i]);
}
vis = vend;
if (TERMP_HANG & p->flags) {
p->overstep = (int)(vis - maxvis +
- p->trailspace * (*p->width)(p, ' '));
+ p->trailspace * (*p->width)(p, ' '));
/*
* If we have overstepped the margin, temporarily move
}
}
-
-/*
+/*
* A newline only breaks an existing line; it won't assert vertical
* space. All data in the output buffer is flushed prior to the newline
* assertion.
term_flushln(p);
}
-
/*
* Asserts a vertical space (a full, empty line-break between lines).
* Note that if used twice, this will cause two blank spaces and so on.
p->fontq[p->fonti] = f;
}
-
void
term_fontrepl(struct termp *p, enum termfont f)
{
p->fontq[p->fonti] = f;
}
-
void
term_fontpush(struct termp *p, enum termfont f)
{
p->fontq[++p->fonti] = f;
}
-
const void *
term_fontq(struct termp *p)
{
return(&p->fontq[p->fonti]);
}
-
enum termfont
term_fonttop(struct termp *p)
{
return(p->fontq[p->fonti]);
}
-
void
term_fontpopq(struct termp *p, const void *key)
{
assert(p->fonti >= 0);
}
-
void
term_fontpop(struct termp *p)
{
if (TERMENC_ASCII != p->enc)
switch (esc) {
- case (ESCAPE_UNICODE):
+ case ESCAPE_UNICODE:
uc = mchars_num2uc(seq + 1, sz - 1);
if ('\0' == uc)
break;
encode1(p, uc);
continue;
- case (ESCAPE_SPECIAL):
+ case ESCAPE_SPECIAL:
uc = mchars_spec2cp(p->symtab, seq, sz);
if (uc <= 0)
break;
}
switch (esc) {
- case (ESCAPE_UNICODE):
+ case ESCAPE_UNICODE:
encode1(p, '?');
break;
- case (ESCAPE_NUMBERED):
+ case ESCAPE_NUMBERED:
c = mchars_num2char(seq, sz);
if ('\0' != c)
encode(p, &c, 1);
break;
- case (ESCAPE_SPECIAL):
+ case ESCAPE_SPECIAL:
cp = mchars_spec2str(p->symtab, seq, sz, &ssz);
- if (NULL != cp)
+ if (NULL != cp)
encode(p, cp, ssz);
else if (1 == ssz)
encode(p, seq, sz);
break;
- case (ESCAPE_FONTBOLD):
+ case ESCAPE_FONTBOLD:
term_fontrepl(p, TERMFONT_BOLD);
break;
- case (ESCAPE_FONTITALIC):
+ case ESCAPE_FONTITALIC:
term_fontrepl(p, TERMFONT_UNDER);
break;
- case (ESCAPE_FONTBI):
+ case ESCAPE_FONTBI:
term_fontrepl(p, TERMFONT_BI);
break;
- case (ESCAPE_FONT):
+ case ESCAPE_FONT:
/* FALLTHROUGH */
- case (ESCAPE_FONTROMAN):
+ case ESCAPE_FONTROMAN:
term_fontrepl(p, TERMFONT_NONE);
break;
- case (ESCAPE_FONTPREV):
+ case ESCAPE_FONTPREV:
term_fontlast(p);
break;
- case (ESCAPE_NOSPACE):
+ case ESCAPE_NOSPACE:
if (TERMP_SKIPCHAR & p->flags)
p->flags &= ~TERMP_SKIPCHAR;
else if ('\0' == *word)
p->flags |= TERMP_NOSPACE;
break;
- case (ESCAPE_SKIPCHAR):
+ case ESCAPE_SKIPCHAR:
p->flags |= TERMP_SKIPCHAR;
break;
default:
while (sz >= p->maxcols)
p->maxcols <<= 2;
- p->buf = mandoc_realloc(p->buf, sizeof(int) * p->maxcols);
+ p->buf = mandoc_reallocarray(p->buf, p->maxcols, sizeof(int));
}
static void
*/
if (TERMFONT_NONE == term_fonttop(p)) {
- if (p->col + sz >= p->maxcols)
+ if (p->col + sz >= p->maxcols)
adjbuf(p, p->col + sz);
for (i = 0; i < sz; i++)
p->buf[p->col++] = word[i];
}
}
+void
+term_setwidth(struct termp *p, const char *wstr)
+{
+ struct roffsu su;
+ size_t width;
+ int iop;
+
+ iop = 0;
+ width = 0;
+ if (NULL != wstr) {
+ switch (*wstr) {
+ case '+':
+ iop = 1;
+ wstr++;
+ break;
+ case '-':
+ iop = -1;
+ wstr++;
+ break;
+ default:
+ break;
+ }
+ if (a2roffsu(wstr, &su, SCALE_MAX))
+ width = term_hspan(p, &su);
+ else
+ iop = 0;
+ }
+ (*p->setwidth)(p, iop, width);
+}
+
size_t
term_len(const struct termp *p, size_t sz)
{
int ssz, skip, c;
const char *seq, *rhs;
enum mandoc_esc esc;
- static const char rej[] = { '\\', ASCII_HYPH, ASCII_NBRSP, '\0' };
+ static const char rej[] = { '\\', ASCII_NBRSP, ASCII_HYPH,
+ ASCII_BREAK, '\0' };
/*
* Account for escaped sequences within string length
sz += cond_width(p, *cp++, &skip);
switch (*cp) {
- case ('\\'):
+ case '\\':
cp++;
esc = mandoc_escape(&cp, &seq, &ssz);
if (ESCAPE_ERROR == esc)
if (TERMENC_ASCII != p->enc)
switch (esc) {
- case (ESCAPE_UNICODE):
- c = mchars_num2uc
- (seq + 1, ssz - 1);
+ case ESCAPE_UNICODE:
+ c = mchars_num2uc(seq + 1,
+ ssz - 1);
if ('\0' == c)
break;
sz += cond_width(p, c, &skip);
continue;
- case (ESCAPE_SPECIAL):
- c = mchars_spec2cp
- (p->symtab, seq, ssz);
+ case ESCAPE_SPECIAL:
+ c = mchars_spec2cp(p->symtab,
+ seq, ssz);
if (c <= 0)
break;
sz += cond_width(p, c, &skip);
rhs = NULL;
switch (esc) {
- case (ESCAPE_UNICODE):
+ case ESCAPE_UNICODE:
sz += cond_width(p, '?', &skip);
break;
- case (ESCAPE_NUMBERED):
+ case ESCAPE_NUMBERED:
c = mchars_num2char(seq, ssz);
if ('\0' != c)
sz += cond_width(p, c, &skip);
break;
- case (ESCAPE_SPECIAL):
- rhs = mchars_spec2str
- (p->symtab, seq, ssz, &rsz);
+ case ESCAPE_SPECIAL:
+ rhs = mchars_spec2str(p->symtab,
+ seq, ssz, &rsz);
if (ssz != 1 || rhs)
break;
rhs = seq;
rsz = ssz;
break;
- case (ESCAPE_SKIPCHAR):
+ case ESCAPE_SKIPCHAR:
skip = 1;
break;
default:
for (i = 0; i < rsz; i++)
sz += (*p->width)(p, *rhs++);
break;
- case (ASCII_NBRSP):
+ case ASCII_NBRSP:
sz += cond_width(p, ' ', &skip);
cp++;
break;
- case (ASCII_HYPH):
+ case ASCII_HYPH:
sz += cond_width(p, '-', &skip);
cp++;
+ /* FALLTHROUGH */
+ case ASCII_BREAK:
break;
default:
break;
return(sz);
}
-/* ARGSUSED */
size_t
term_vspan(const struct termp *p, const struct roffsu *su)
{
double r;
switch (su->unit) {
- case (SCALE_CM):
+ case SCALE_CM:
r = su->scale * 2;
break;
- case (SCALE_IN):
+ case SCALE_IN:
r = su->scale * 6;
break;
- case (SCALE_PC):
+ case SCALE_PC:
r = su->scale;
break;
- case (SCALE_PT):
+ case SCALE_PT:
r = su->scale / 8;
break;
- case (SCALE_MM):
+ case SCALE_MM:
r = su->scale / 1000;
break;
- case (SCALE_VS):
+ case SCALE_VS:
r = su->scale;
break;
default:
if (r < 0.0)
r = 0.0;
- return(/* LINTED */(size_t)
- r);
+ return((size_t)r);
}
size_t
v = ((*p->hspan)(p, su));
if (v < 0.0)
v = 0.0;
- return((size_t) /* LINTED */
- v);
+ return((size_t)v);
}
git.ckatri.com / mandoc.git / blobdiff