-/* $Id: term.c,v 1.207 2013/05/29 15:17:52 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 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 size_t cond_width(const struct termp *, int, int *);
-static void adjbuf(struct termp *p, int);
+static void adjbuf(struct termp *p, size_t);
static void bufferc(struct termp *, char);
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.
- *
- * - TERMP_TWOSPACE: make sure there is room for at least two space
- * characters of padding. Otherwise, rather break the line.
- *
- * - 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)
{
- int i; /* current input position in p->buf */
+ size_t i; /* current input position in p->buf */
int ntab; /* number of tabs to prepend */
size_t vis; /* current visual position on output */
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 j; /* temporary loop index for p->buf */
+ size_t 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.
* This is usually the difference between the right-margin and
* an indentation, but can be, for tagged lists or columns, a
- * small set of values.
+ * small set of values.
+ *
+ * The following unsigned-signed subtractions look strange,
+ * but they are actually correct. If the int p->overstep
+ * is negative, it gets sign extended. Subtracting that
+ * very large size_t effectively adds a small number to dv.
*/
assert (p->rmargin >= p->offset);
dv = p->rmargin - p->offset;
*/
for (j = i, jhy = 0; j < p->col; j++) {
- if ((j && ' ' == p->buf[j]) || '\t' == p->buf[j])
+ if (' ' == p->buf[j] || '\t' == p->buf[j])
break;
/* Back over the the last printed character. */
/* 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
if (0 < ntab)
vbl += ntab * p->tabwidth;
- /* Remove the p->overstep width. */
+ /*
+ * Remove the p->overstep width.
+ * Again, if p->overstep is negative,
+ * sign extension does the right thing.
+ */
bp += (size_t)p->overstep;
p->overstep = 0;
j = i;
while (' ' == p->buf[i])
i++;
- dv = (size_t)(i - j) * (*p->width)(p, ' ');
+ dv = (i - j) * (*p->width)(p, ' ');
vbl += dv;
vend += dv;
break;
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) {
- /* We need one blank after the tag. */
- p->overstep = (int)(vis - maxvis + (*p->width)(p, ' '));
+ p->overstep = (int)(vis - maxvis +
+ p->trailspace * (*p->width)(p, ' '));
/*
* If we have overstepped the margin, temporarily move
* it to the right and flag the rest of the line to be
* shorter.
+ * If there is a request to keep the columns together,
+ * allow negative overstep when the column is not full.
*/
- if (p->overstep < 0)
+ if (p->trailspace && p->overstep < 0)
p->overstep = 0;
return;
return;
/* If the column was overrun, break the line. */
- if (maxvis <= vis +
- ((TERMP_TWOSPACE & p->flags) ? (*p->width)(p, ' ') : 0)) {
+ if (maxvis < vis + p->trailspace * (*p->width)(p, ' ')) {
(*p->endline)(p);
p->viscol = 0;
}
}
-
-/*
+/*
* 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)
{
void
term_word(struct termp *p, const char *word)
{
+ const char nbrsp[2] = { ASCII_NBRSP, 0 };
const char *seq, *cp;
char c;
int sz, uc;
else
p->flags |= TERMP_NOSPACE;
- p->flags &= ~(TERMP_SENTENCE | TERMP_IGNDELIM);
+ p->flags &= ~TERMP_SENTENCE;
while ('\0' != *word) {
if ('\\' != *word) {
word++;
continue;
}
- ssz = strcspn(word, "\\");
+ if (TERMP_NBRWORD & p->flags) {
+ if (' ' == *word) {
+ encode(p, nbrsp, 1);
+ word++;
+ continue;
+ }
+ ssz = strcspn(word, "\\ ");
+ } else
+ ssz = strcspn(word, "\\");
encode(p, word, ssz);
word += (int)ssz;
continue;
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_FONT):
+ case ESCAPE_FONTBI:
+ term_fontrepl(p, TERMFONT_BI);
+ break;
+ 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:
break;
}
}
+ p->flags &= ~TERMP_NBRWORD;
}
static void
-adjbuf(struct termp *p, int sz)
+adjbuf(struct termp *p, size_t sz)
{
if (0 == p->maxcols)
while (sz >= p->maxcols)
p->maxcols <<= 2;
- p->buf = mandoc_realloc
- (p->buf, sizeof(int) * (size_t)p->maxcols);
+ p->buf = mandoc_reallocarray(p->buf, p->maxcols, sizeof(int));
}
static void
return;
}
- if (p->col + 4 >= p->maxcols)
- adjbuf(p, p->col + 4);
+ if (p->col + 6 >= p->maxcols)
+ adjbuf(p, p->col + 6);
f = term_fonttop(p);
- if (TERMFONT_NONE == f) {
- p->buf[p->col++] = c;
- return;
- } else if (TERMFONT_UNDER == f) {
+ if (TERMFONT_UNDER == f || TERMFONT_BI == f) {
p->buf[p->col++] = '_';
- } else
- p->buf[p->col++] = c;
-
- p->buf[p->col++] = 8;
+ p->buf[p->col++] = 8;
+ }
+ if (TERMFONT_BOLD == f || TERMFONT_BI == f) {
+ if (ASCII_HYPH == c)
+ p->buf[p->col++] = '-';
+ else
+ p->buf[p->col++] = c;
+ p->buf[p->col++] = 8;
+ }
p->buf[p->col++] = c;
}
static void
encode(struct termp *p, const char *word, size_t sz)
{
- enum termfont f;
- int i, len;
+ size_t i;
if (TERMP_SKIPCHAR & p->flags) {
p->flags &= ~TERMP_SKIPCHAR;
return;
}
- /* LINTED */
- len = sz;
-
/*
* Encode and buffer a string of characters. If the current
* font mode is unset, buffer directly, else encode then buffer
* character by character.
*/
- if (TERMFONT_NONE == (f = term_fonttop(p))) {
- if (p->col + len >= p->maxcols)
- adjbuf(p, p->col + len);
- for (i = 0; i < len; i++)
+ if (TERMFONT_NONE == term_fonttop(p)) {
+ if (p->col + sz >= p->maxcols)
+ adjbuf(p, p->col + sz);
+ for (i = 0; i < sz; i++)
p->buf[p->col++] = word[i];
return;
}
/* Pre-buffer, assuming worst-case. */
- if (p->col + 1 + (len * 3) >= p->maxcols)
- adjbuf(p, p->col + 1 + (len * 3));
+ if (p->col + 1 + (sz * 5) >= p->maxcols)
+ adjbuf(p, p->col + 1 + (sz * 5));
- for (i = 0; i < len; i++) {
- if (ASCII_HYPH != word[i] &&
- ! isgraph((unsigned char)word[i])) {
- p->buf[p->col++] = word[i];
- continue;
- }
-
- if (TERMFONT_UNDER == f)
- p->buf[p->col++] = '_';
- else if (ASCII_HYPH == word[i])
- p->buf[p->col++] = '-';
+ for (i = 0; i < sz; i++) {
+ if (ASCII_HYPH == word[i] ||
+ isgraph((unsigned char)word[i]))
+ encode1(p, word[i]);
else
p->buf[p->col++] = word[i];
+ }
+}
- p->buf[p->col++] = 8;
- 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
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
for (i = 0; i < rsz; i++)
sz += cond_width(p, *cp++, &skip);
- c = 0;
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