-/* $Id: term.c,v 1.220 2014/04/05 21:18:19 schwarze Exp $ */
+/* $Id: term.c,v 1.244 2015/01/31 00:12:41 schwarze Exp $ */
/*
* Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2010-2014 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2010-2015 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
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
-#ifdef HAVE_CONFIG_H
#include "config.h"
-#endif
#include <sys/types.h>
static void encode(struct termp *, const char *, size_t);
static void encode1(struct termp *, int);
+
void
term_free(struct termp *p)
{
- if (p->buf)
- free(p->buf);
- if (p->symtab)
- mchars_free(p->symtab);
-
+ free(p->buf);
+ free(p->fontq);
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)
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.
* 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;
+ dv = p->rmargin > p->offset ? p->rmargin - p->offset : 0;
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;
+ if (p->flags & TERMP_NOBREAK) {
+ dv = p->maxrmargin > p->offset ?
+ p->maxrmargin - p->offset : 0;
+ bp = (int)dv > p->overstep ?
+ dv - (size_t)p->overstep : 0;
+ } else
+ bp = maxvis;
/*
* Calculate the required amount of padding.
/* Regular word. */
/* Break at the hyphen point if we overrun. */
- if (vend > vis && vend < bp &&
+ if (vend > vis && vend < bp &&
(ASCII_HYPH == p->buf[j] ||
ASCII_BREAK == p->buf[j]))
jhy = 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;
+ vend += p->rmargin;
+ vend -= p->offset;
} else
vbl = p->offset;
break;
if (' ' == p->buf[i]) {
j = i;
- while (' ' == p->buf[i])
+ while (i < p->col && ' ' == p->buf[i])
i++;
dv = (i - j) * (*p->width)(p, ' ');
vbl += dv;
(*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 there was trailing white space, it was not printed;
* so reset the cursor position accordingly.
*/
- if (vis)
+ if (vis > vbl)
vis -= vbl;
+ else
+ vis = 0;
p->col = 0;
p->overstep = 0;
}
if (TERMP_HANG & p->flags) {
- p->overstep = (int)(vis - maxvis +
- p->trailspace * (*p->width)(p, ' '));
+ p->overstep += (int)(p->offset + vis - p->rmargin +
+ 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->endline)(p);
}
+/* Swap current and previous font; for \fP and .ft P */
void
term_fontlast(struct termp *p)
{
p->fontq[p->fonti] = f;
}
-
+/* Set font, save current, discard previous; for \f, .ft, .B etc. */
void
term_fontrepl(struct termp *p, enum termfont f)
{
p->fontq[p->fonti] = f;
}
-
+/* Set font, save previous. */
void
term_fontpush(struct termp *p, enum termfont f)
{
- assert(p->fonti + 1 < 10);
p->fontl = p->fontq[p->fonti];
- 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]);
+ if (++p->fonti == p->fontsz) {
+ p->fontsz += 8;
+ p->fontq = mandoc_reallocarray(p->fontq,
+ p->fontsz, sizeof(enum termfont *));
+ }
+ p->fontq[p->fonti] = f;
}
-
+/* Flush to make the saved pointer current again. */
void
-term_fontpopq(struct termp *p, const void *key)
+term_fontpopq(struct termp *p, int i)
{
- while (p->fonti >= 0 && key < (void *)(p->fontq + p->fonti))
- p->fonti--;
- assert(p->fonti >= 0);
+ assert(i >= 0);
+ if (p->fonti > i)
+ p->fonti = i;
}
-
+/* Pop one font off the stack. */
void
term_fontpop(struct termp *p)
{
{
const char nbrsp[2] = { ASCII_NBRSP, 0 };
const char *seq, *cp;
- char c;
int sz, uc;
size_t ssz;
enum mandoc_esc esc;
else
p->flags |= TERMP_NOSPACE;
- p->flags &= ~TERMP_SENTENCE;
+ p->flags &= ~(TERMP_SENTENCE | TERMP_NONEWLINE);
while ('\0' != *word) {
if ('\\' != *word) {
word++;
esc = mandoc_escape(&word, &seq, &sz);
if (ESCAPE_ERROR == esc)
- break;
-
- if (TERMENC_ASCII != p->enc)
- switch (esc) {
- case (ESCAPE_UNICODE):
- uc = mchars_num2uc(seq + 1, sz - 1);
- if ('\0' == uc)
- break;
- encode1(p, uc);
- continue;
- case (ESCAPE_SPECIAL):
- uc = mchars_spec2cp(p->symtab, seq, sz);
- if (uc <= 0)
- break;
- encode1(p, uc);
- continue;
- default:
- break;
- }
+ continue;
switch (esc) {
- case (ESCAPE_UNICODE):
- encode1(p, '?');
+ case ESCAPE_UNICODE:
+ uc = mchars_num2uc(seq + 1, sz - 1);
break;
- case (ESCAPE_NUMBERED):
- c = mchars_num2char(seq, sz);
- if ('\0' != c)
- encode(p, &c, 1);
- break;
- case (ESCAPE_SPECIAL):
- cp = mchars_spec2str(p->symtab, seq, sz, &ssz);
- if (NULL != cp)
- encode(p, cp, ssz);
- else if (1 == ssz)
- encode(p, seq, sz);
+ case ESCAPE_NUMBERED:
+ uc = mchars_num2char(seq, sz);
+ if (uc < 0)
+ continue;
break;
- case (ESCAPE_FONTBOLD):
+ case ESCAPE_SPECIAL:
+ if (p->enc == TERMENC_ASCII) {
+ cp = mchars_spec2str(p->symtab,
+ seq, sz, &ssz);
+ if (cp != NULL)
+ encode(p, cp, ssz);
+ } else {
+ uc = mchars_spec2cp(p->symtab, seq, sz);
+ if (uc > 0)
+ encode1(p, uc);
+ }
+ continue;
+ case ESCAPE_FONTBOLD:
term_fontrepl(p, TERMFONT_BOLD);
- break;
- case (ESCAPE_FONTITALIC):
+ continue;
+ case ESCAPE_FONTITALIC:
term_fontrepl(p, TERMFONT_UNDER);
- break;
- case (ESCAPE_FONTBI):
+ continue;
+ case ESCAPE_FONTBI:
term_fontrepl(p, TERMFONT_BI);
- break;
- case (ESCAPE_FONT):
+ continue;
+ case ESCAPE_FONT:
/* FALLTHROUGH */
- case (ESCAPE_FONTROMAN):
+ case ESCAPE_FONTROMAN:
term_fontrepl(p, TERMFONT_NONE);
- break;
- case (ESCAPE_FONTPREV):
+ continue;
+ case ESCAPE_FONTPREV:
term_fontlast(p);
- break;
- case (ESCAPE_NOSPACE):
+ continue;
+ case ESCAPE_NOSPACE:
if (TERMP_SKIPCHAR & p->flags)
p->flags &= ~TERMP_SKIPCHAR;
else if ('\0' == *word)
- p->flags |= TERMP_NOSPACE;
- break;
- case (ESCAPE_SKIPCHAR):
+ p->flags |= (TERMP_NOSPACE | TERMP_NONEWLINE);
+ continue;
+ case ESCAPE_SKIPCHAR:
p->flags |= TERMP_SKIPCHAR;
- break;
+ continue;
+ case ESCAPE_OVERSTRIKE:
+ cp = seq + sz;
+ while (seq < cp) {
+ if (*seq == '\\') {
+ mandoc_escape(&seq, NULL, NULL);
+ continue;
+ }
+ encode1(p, *seq++);
+ if (seq < cp)
+ encode(p, "\b", 1);
+ }
default:
- break;
+ continue;
+ }
+
+ /*
+ * Common handling for Unicode and numbered
+ * character escape sequences.
+ */
+
+ if (p->enc == TERMENC_ASCII) {
+ cp = ascii_uc2str(uc);
+ encode(p, cp, strlen(cp));
+ } else {
+ if ((uc < 0x20 && uc != 0x09) ||
+ (uc > 0x7E && uc < 0xA0))
+ uc = 0xFFFD;
+ encode1(p, uc);
}
}
p->flags &= ~TERMP_NBRWORD;
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 (p->col + 6 >= p->maxcols)
adjbuf(p, p->col + 6);
- f = term_fonttop(p);
+ f = p->fontq[p->fonti];
if (TERMFONT_UNDER == f || TERMFONT_BI == f) {
p->buf[p->col++] = '_';
* character by character.
*/
- if (TERMFONT_NONE == term_fonttop(p)) {
- if (p->col + sz >= p->maxcols)
+ if (p->fontq[p->fonti] == TERMFONT_NONE) {
+ if (p->col + sz >= p->maxcols)
adjbuf(p, p->col + sz);
for (i = 0; i < sz; i++)
p->buf[p->col++] = word[i];
width = 0;
if (NULL != wstr) {
switch (*wstr) {
- case ('+'):
+ case '+':
iop = 1;
wstr++;
break;
- case ('-'):
+ case '-':
iop = -1;
wstr++;
break;
term_strlen(const struct termp *p, const char *cp)
{
size_t sz, rsz, i;
- int ssz, skip, c;
+ int ssz, skip, uc;
const char *seq, *rhs;
enum mandoc_esc esc;
static const char rej[] = { '\\', ASCII_NBRSP, ASCII_HYPH,
sz += cond_width(p, *cp++, &skip);
switch (*cp) {
- case ('\\'):
+ case '\\':
cp++;
esc = mandoc_escape(&cp, &seq, &ssz);
if (ESCAPE_ERROR == esc)
- return(sz);
-
- if (TERMENC_ASCII != p->enc)
- switch (esc) {
- 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);
- if (c <= 0)
- break;
- sz += cond_width(p, c, &skip);
- continue;
- default:
- break;
- }
+ continue;
rhs = NULL;
switch (esc) {
- case (ESCAPE_UNICODE):
- sz += cond_width(p, '?', &skip);
- break;
- case (ESCAPE_NUMBERED):
- c = mchars_num2char(seq, ssz);
- if ('\0' != c)
- sz += cond_width(p, c, &skip);
+ case ESCAPE_UNICODE:
+ uc = mchars_num2uc(seq + 1, ssz - 1);
break;
- case (ESCAPE_SPECIAL):
- rhs = mchars_spec2str
- (p->symtab, seq, ssz, &rsz);
-
- if (ssz != 1 || rhs)
- break;
-
- rhs = seq;
- rsz = ssz;
+ case ESCAPE_NUMBERED:
+ uc = mchars_num2char(seq, ssz);
+ if (uc < 0)
+ continue;
break;
- case (ESCAPE_SKIPCHAR):
+ case ESCAPE_SPECIAL:
+ if (p->enc == TERMENC_ASCII) {
+ rhs = mchars_spec2str(p->symtab,
+ seq, ssz, &rsz);
+ if (rhs != NULL)
+ break;
+ } else {
+ uc = mchars_spec2cp(p->symtab,
+ seq, ssz);
+ if (uc > 0)
+ sz += cond_width(p, uc, &skip);
+ }
+ continue;
+ case ESCAPE_SKIPCHAR:
skip = 1;
- break;
+ continue;
+ case ESCAPE_OVERSTRIKE:
+ rsz = 0;
+ rhs = seq + ssz;
+ while (seq < rhs) {
+ if (*seq == '\\') {
+ mandoc_escape(&seq, NULL, NULL);
+ continue;
+ }
+ i = (*p->width)(p, *seq++);
+ if (rsz < i)
+ rsz = i;
+ }
+ sz += rsz;
+ continue;
default:
- break;
+ continue;
}
- if (NULL == rhs)
- break;
+ /*
+ * Common handling for Unicode and numbered
+ * character escape sequences.
+ */
+
+ if (rhs == NULL) {
+ if (p->enc == TERMENC_ASCII) {
+ rhs = ascii_uc2str(uc);
+ rsz = strlen(rhs);
+ } else {
+ if ((uc < 0x20 && uc != 0x09) ||
+ (uc > 0x7E && uc < 0xA0))
+ uc = 0xFFFD;
+ sz += cond_width(p, uc, &skip);
+ continue;
+ }
+ }
if (skip) {
skip = 0;
break;
}
+ /*
+ * Common handling for all escape sequences
+ * printing more than one character.
+ */
+
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):
+ case ASCII_BREAK:
break;
default:
break;
return(sz);
}
-/* ARGSUSED */
-size_t
+int
term_vspan(const struct termp *p, const struct roffsu *su)
{
double r;
+ int ri;
switch (su->unit) {
- case (SCALE_CM):
- r = su->scale * 2;
+ case SCALE_BU:
+ r = su->scale / 40.0;
break;
- case (SCALE_IN):
- r = su->scale * 6;
+ case SCALE_CM:
+ r = su->scale * 6.0 / 2.54;
break;
- case (SCALE_PC):
+ case SCALE_FS:
+ r = su->scale * 65536.0 / 40.0;
+ break;
+ case SCALE_IN:
+ r = su->scale * 6.0;
+ break;
+ case SCALE_MM:
+ r = su->scale * 0.006;
+ break;
+ case SCALE_PC:
r = su->scale;
break;
- case (SCALE_PT):
- r = su->scale / 8;
+ case SCALE_PT:
+ r = su->scale / 12.0;
break;
- case (SCALE_MM):
- r = su->scale / 1000;
+ case SCALE_EN:
+ /* FALLTHROUGH */
+ case SCALE_EM:
+ r = su->scale * 0.6;
break;
- case (SCALE_VS):
+ case SCALE_VS:
r = su->scale;
break;
default:
- r = su->scale - 1;
- break;
+ abort();
+ /* NOTREACHED */
}
-
- if (r < 0.0)
- r = 0.0;
- return(/* LINTED */(size_t)
- r);
+ ri = r > 0.0 ? r + 0.4995 : r - 0.4995;
+ return(ri < 66 ? ri : 1);
}
-size_t
+int
term_hspan(const struct termp *p, const struct roffsu *su)
{
double v;
- v = ((*p->hspan)(p, su));
- if (v < 0.0)
- v = 0.0;
- return((size_t) /* LINTED */
- v);
+ v = (*p->hspan)(p, su);
+ return(v > 0.0 ? v + 0.0005 : v - 0.0005);
}
git.ckatri.com / mandoc.git / blobdiff