mandoc/term.c - diff

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Diff for /mandoc/term.c between version 1.221 and 1.248

version 1.221, 2014/04/08 07:13:12

version 1.248, 2015/04/29 18:35:00

Line 1

/* $Id$ */

* Permission to use, copy, modify, and distribute this software for any

* purpose with or without fee is hereby granted, provided that the above

* copyright notice and this permission notice appear in all copies.

* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES

* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES

* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR

* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR

* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

* 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>

Line 39 static void bufferc(struct termp *, char);

Line 37 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)

{

if (p->buf)

free(p->buf);

free(p->fontq);

if (p->symtab)

mchars_free(p->symtab);

free(p);

}

void

term_begin(struct termp *p, term_margin head,

term_margin foot, const void *arg)

term_margin foot, const struct roff_meta *arg)

{

p->headf = head;

Line 63 term_begin(struct termp *p, term_margin head,

Line 58 term_begin(struct termp *p, term_margin head,

(*p->begin)(p);

}

void

term_end(struct termp *p)

{

Line 107 term_flushln(struct termp *p)

Line 101 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.

Line 120 term_flushln(struct termp *p)

Line 113 term_flushln(struct termp *p)

* 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 ? p->rmargin - p->offset : 0;

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;

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.

Line 171 term_flushln(struct termp *p)

Line 167 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] ||

ASCII_BREAK == p->buf[j]))

jhy = j;

Line 196 term_flushln(struct termp *p)

Line 192 term_flushln(struct termp *p)

p->viscol = 0;

if (TERMP_BRIND & p->flags) {

vbl = p->rmargin;

vend += p->rmargin - p->offset;

vend += p->rmargin;

vend -= p->offset;

} else

vbl = p->offset;

Line 223 term_flushln(struct termp *p)

Line 220 term_flushln(struct termp *p)

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;

Line 251 term_flushln(struct termp *p)

Line 248 term_flushln(struct termp *p)

(*p->letter)(p, p->buf[i]);

if (8 == p->buf[i])

p->viscol -= (*p->width)(p, p->buf[i-1]);

else

p->viscol += (*p->width)(p, p->buf[i]);

}

vis = vend;

Line 261 term_flushln(struct termp *p)

Line 258 term_flushln(struct termp *p)

* 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;

p->flags &= ~(TERMP_BACKAFTER | TERMP_BACKBEFORE);

if ( ! (TERMP_NOBREAK & p->flags)) {

p->viscol = 0;

Line 274 term_flushln(struct termp *p)

}

if (TERMP_HANG & p->flags) {

p->overstep = (int)(vis - maxvis +

p->overstep += (int)(p->offset + vis - p->rmargin +

p->trailspace * (*p->width)(p, ' '));

* If we have overstepped the margin, temporarily move

Line 298 term_flushln(struct termp *p)

}

* 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.

Line 313 term_newln(struct termp *p)

Line 312 term_newln(struct termp *p)

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.

Line 332 term_vspace(struct termp *p)

Line 330 term_vspace(struct termp *p)

(*p->endline)(p);

}

/* Swap current and previous font; for \fP and .ft P */

void

term_fontlast(struct termp *p)

{

Line 342 term_fontlast(struct termp *p)

Line 341 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)

{

Line 351 term_fontrepl(struct termp *p, enum termfont f)

Line 350 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;

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. */

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)

term_fontpopq(struct termp *p, int i)

{

while (p->fonti >= 0 && key < (void *)(p->fontq + p->fonti))

assert(i >= 0);

p->fonti--;

if (p->fonti > i)

assert(p->fonti >= 0);

p->fonti = i;

}

/* Pop one font off the stack. */

void

term_fontpop(struct termp *p)

{

Line 406 term_word(struct termp *p, const char *word)

Line 393 term_word(struct termp *p, const char *word)

{

const char nbrsp[2] = { ASCII_NBRSP, 0 };

const char *seq, *cp;

char c;

int sz, uc;

size_t ssz;

enum mandoc_esc esc;

Line 427 term_word(struct termp *p, const char *word)

Line 413 term_word(struct termp *p, const char *word)

else

p->flags |= TERMP_NOSPACE;

p->flags &= ~TERMP_SENTENCE;

p->flags &= ~(TERMP_SENTENCE | TERMP_NONEWLINE);

p->skipvsp = 0;

while ('\0' != *word) {

if ('\\' != *word) {

if (TERMP_SKIPCHAR & p->flags) {

p->flags &= ~TERMP_SKIPCHAR;

word++;

continue;

}

if (TERMP_NBRWORD & p->flags) {

if (' ' == *word) {

encode(p, nbrsp, 1);

Line 453 term_word(struct termp *p, const char *word)

Line 435 term_word(struct termp *p, const char *word)

word++;

esc = mandoc_escape(&word, &seq, &sz);

if (ESCAPE_ERROR == esc)

break;

continue;

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;

}

switch (esc) {

case (ESCAPE_UNICODE):

case ESCAPE_UNICODE:

encode1(p, '?');

uc = mchars_num2uc(seq + 1, sz - 1);

break;

case (ESCAPE_NUMBERED):

case ESCAPE_NUMBERED:

c = mchars_num2char(seq, sz);

uc = mchars_num2char(seq, sz);

if ('\0' != c)

if (uc < 0)

encode(p, &c, 1);

continue;

break;

case (ESCAPE_SPECIAL):

case ESCAPE_SPECIAL:

cp = mchars_spec2str(p->symtab, seq, sz, &ssz);

if (p->enc == TERMENC_ASCII) {

if (NULL != cp)

cp = mchars_spec2str(p->symtab,

encode(p, cp, ssz);

seq, sz, &ssz);

else if (1 == ssz)

if (cp != NULL)

encode(p, seq, sz);

encode(p, cp, ssz);

break;

} else {

case (ESCAPE_FONTBOLD):

uc = mchars_spec2cp(p->symtab, seq, sz);

if (uc > 0)

encode1(p, uc);

}

continue;

case ESCAPE_FONTBOLD:

term_fontrepl(p, TERMFONT_BOLD);

break;

continue;

case (ESCAPE_FONTITALIC):

case ESCAPE_FONTITALIC:

term_fontrepl(p, TERMFONT_UNDER);

break;

continue;

case (ESCAPE_FONTBI):

case ESCAPE_FONTBI:

term_fontrepl(p, TERMFONT_BI);

break;

continue;

case (ESCAPE_FONT):

case ESCAPE_FONT:

/* FALLTHROUGH */

case (ESCAPE_FONTROMAN):

case ESCAPE_FONTROMAN:

term_fontrepl(p, TERMFONT_NONE);

break;

continue;

case (ESCAPE_FONTPREV):

case ESCAPE_FONTPREV:

term_fontlast(p);

break;

continue;

case (ESCAPE_NOSPACE):

case ESCAPE_NOSPACE:

if (TERMP_SKIPCHAR & p->flags)

if (p->flags & TERMP_BACKAFTER)

p->flags &= ~TERMP_SKIPCHAR;

p->flags &= ~TERMP_BACKAFTER;

else if ('\0' == *word)

else if (*word == '\0')

p->flags |= TERMP_NOSPACE;

p->flags |= (TERMP_NOSPACE | TERMP_NONEWLINE);

break;

continue;

case (ESCAPE_SKIPCHAR):

case ESCAPE_SKIPCHAR:

p->flags |= TERMP_SKIPCHAR;

p->flags |= TERMP_BACKAFTER;

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) {

if (p->flags & TERMP_BACKBEFORE)

p->flags |= TERMP_BACKAFTER;

else

p->flags |= TERMP_BACKBEFORE;

}

continue;

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;

}

Line 531 adjbuf(struct termp *p, size_t sz)

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

Line 554 encode1(struct termp *p, int c)

{

enum termfont f;

if (TERMP_SKIPCHAR & p->flags) {

if (p->col + 7 >= p->maxcols)

p->flags &= ~TERMP_SKIPCHAR;

adjbuf(p, p->col + 7);

return;

}

if (p->col + 6 >= p->maxcols)

f = (c == ASCII_HYPH || isgraph(c)) ?

adjbuf(p, p->col + 6);

p->fontq[p->fonti] : TERMFONT_NONE;

f = term_fonttop(p);

if (p->flags & TERMP_BACKBEFORE) {

p->buf[p->col++] = 8;

p->flags &= ~TERMP_BACKBEFORE;

}

if (TERMFONT_UNDER == f || TERMFONT_BI == f) {

p->buf[p->col++] = '_';

p->buf[p->col++] = 8;

Line 576 encode1(struct termp *p, int c)

p->buf[p->col++] = 8;

}

p->buf[p->col++] = c;

if (p->flags & TERMP_BACKAFTER) {

p->flags |= TERMP_BACKBEFORE;

p->flags &= ~TERMP_BACKAFTER;

}

static void

Line 583 encode(struct termp *p, const char *word, size_t sz)

Line 587 encode(struct termp *p, const char *word, size_t sz)

{

size_t i;

if (TERMP_SKIPCHAR & p->flags) {

if (p->col + 2 + (sz * 5) >= p->maxcols)

p->flags &= ~TERMP_SKIPCHAR;

adjbuf(p, p->col + 2 + (sz * 5));

return;

}

* 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 == 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 + (sz * 5) >= p->maxcols)

adjbuf(p, p->col + 1 + (sz * 5));

for (i = 0; i < sz; i++) {

if (ASCII_HYPH == word[i] ||

isgraph((unsigned char)word[i]))

Line 620 void

Line 603 void

term_setwidth(struct termp *p, const char *wstr)

{

struct roffsu su;

size_t width;

int iop, width;

int iop;

iop = 0;

width = 0;

if (NULL != wstr) {

switch (*wstr) {

case ('+'):

case '+':

iop = 1;

wstr++;

break;

case ('-'):

case '-':

iop = -1;

wstr++;

break;

Line 668 size_t

Line 650 size_t

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,

Line 688 term_strlen(const struct termp *p, const char *cp)

Line 670 term_strlen(const struct termp *p, const char *cp)

sz += cond_width(p, *cp++, &skip);

switch (*cp) {

case ('\\'):

case '\\':

cp++;

esc = mandoc_escape(&cp, &seq, &ssz);

if (ESCAPE_ERROR == esc)

return(sz);

continue;

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;

}

rhs = NULL;

switch (esc) {

case (ESCAPE_UNICODE):

case ESCAPE_UNICODE:

sz += cond_width(p, '?', &skip);

uc = mchars_num2uc(seq + 1, ssz - 1);

break;

case (ESCAPE_NUMBERED):

case ESCAPE_NUMBERED:

c = mchars_num2char(seq, ssz);

uc = mchars_num2char(seq, ssz);

if ('\0' != c)

if (uc < 0)

sz += cond_width(p, c, &skip);

continue;

break;

case (ESCAPE_SPECIAL):

case ESCAPE_SPECIAL:

rhs = mchars_spec2str

if (p->enc == TERMENC_ASCII) {

(p->symtab, seq, ssz, &rsz);

rhs = mchars_spec2str(p->symtab,

seq, ssz, &rsz);

if (ssz != 1 || rhs)

if (rhs != NULL)

break;

} else {

rhs = seq;

uc = mchars_spec2cp(p->symtab,

rsz = ssz;

seq, ssz);

break;

if (uc > 0)

case (ESCAPE_SKIPCHAR):

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;

Line 771 term_strlen(const struct termp *p, const char *cp)

Line 770 term_strlen(const struct termp *p, const char *cp)

return(sz);

}

/* ARGSUSED */

int

size_t

term_vspan(const struct termp *p, const struct roffsu *su)

{

double r;

int ri;

switch (su->unit) {

case (SCALE_CM):

case SCALE_BU:

r = su->scale * 2;

r = su->scale / 40.0;

break;

case (SCALE_IN):

case SCALE_CM:

r = su->scale * 6;

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):

case SCALE_PT:

r = su->scale / 8;

r = su->scale / 12.0;

break;

case (SCALE_MM):

case SCALE_EN:

r = su->scale / 1000;

/* 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;

abort();

break;

/* NOTREACHED */

}

ri = r > 0.0 ? r + 0.4995 : r - 0.4995;

if (r < 0.0)

return(ri < 66 ? ri : 1);

r = 0.0;

return(/* LINTED */(size_t)

r);

}

size_t

* Convert a scaling width to basic units, rounding down.

int

term_hspan(const struct termp *p, const struct roffsu *su)

{

double v;

v = ((*p->hspan)(p, su));

return((*p->hspan)(p, su));

if (v < 0.0)

v = 0.0;

return((size_t) /* LINTED */

v);

}

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