version 1.242, 2014/12/24 23:32:42 |
version 1.251, 2015/09/26 00:54:04 |
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/* $Id$ */ |
/* $Id$ */ |
/* |
/* |
* Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> |
* 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 |
* Permission to use, copy, modify, and distribute this software for any |
* purpose with or without fee is hereby granted, provided that the above |
* purpose with or without fee is hereby granted, provided that the above |
* copyright notice and this permission notice appear in all copies. |
* 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 |
* 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 |
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
Line 49 term_free(struct termp *p) |
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Line 49 term_free(struct termp *p) |
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void |
void |
term_begin(struct termp *p, term_margin head, |
term_begin(struct termp *p, term_margin head, |
term_margin foot, const void *arg) |
term_margin foot, const struct roff_meta *arg) |
{ |
{ |
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p->headf = head; |
p->headf = head; |
Line 78 term_end(struct termp *p) |
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Line 78 term_end(struct termp *p) |
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* the next column. However, if less than p->trailspace blanks, |
* the next column. However, if less than p->trailspace blanks, |
* which can be 0, 1, or 2, remain to the right margin, the line |
* which can be 0, 1, or 2, remain to the right margin, the line |
* will be broken. |
* will be broken. |
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* - TERMP_BRTRSP: Consider trailing whitespace significant |
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* when deciding whether the chunk fits or not. |
* - TERMP_BRIND: If the chunk does not fit and the output line has |
* - 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 |
* to be broken, start the next line at the right margin instead |
* of at the offset. Used together with TERMP_NOBREAK for the tags |
* of at the offset. Used together with TERMP_NOBREAK for the tags |
Line 265 term_flushln(struct termp *p) |
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Line 267 term_flushln(struct termp *p) |
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p->col = 0; |
p->col = 0; |
p->overstep = 0; |
p->overstep = 0; |
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p->flags &= ~(TERMP_BACKAFTER | TERMP_BACKBEFORE); |
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if ( ! (TERMP_NOBREAK & p->flags)) { |
if ( ! (TERMP_NOBREAK & p->flags)) { |
p->viscol = 0; |
p->viscol = 0; |
Line 290 term_flushln(struct termp *p) |
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Line 293 term_flushln(struct termp *p) |
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} else if (TERMP_DANGLE & p->flags) |
} else if (TERMP_DANGLE & p->flags) |
return; |
return; |
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/* Trailing whitespace is significant in some columns. */ |
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if (vis && vbl && (TERMP_BRTRSP & p->flags)) |
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vis += vbl; |
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/* If the column was overrun, break the line. */ |
/* If the column was overrun, break the line. */ |
if (maxvis < vis + p->trailspace * (*p->width)(p, ' ')) { |
if (maxvis < vis + p->trailspace * (*p->width)(p, ' ')) { |
(*p->endline)(p); |
(*p->endline)(p); |
Line 363 term_fontpush(struct termp *p, enum termfont f) |
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Line 370 term_fontpush(struct termp *p, enum termfont f) |
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p->fontq[p->fonti] = f; |
p->fontq[p->fonti] = f; |
} |
} |
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/* Retrieve pointer to current font. */ |
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const enum termfont * |
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term_fontq(struct termp *p) |
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{ |
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return(&p->fontq[p->fonti]); |
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} |
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/* Flush to make the saved pointer current again. */ |
/* Flush to make the saved pointer current again. */ |
void |
void |
term_fontpopq(struct termp *p, const enum termfont *key) |
term_fontpopq(struct termp *p, int i) |
{ |
{ |
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while (p->fonti >= 0 && key < p->fontq + p->fonti) |
assert(i >= 0); |
p->fonti--; |
if (p->fonti > i) |
assert(p->fonti >= 0); |
p->fonti = i; |
} |
} |
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/* Pop one font off the stack. */ |
/* Pop one font off the stack. */ |
Line 421 term_word(struct termp *p, const char *word) |
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Line 420 term_word(struct termp *p, const char *word) |
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p->flags |= TERMP_NOSPACE; |
p->flags |= TERMP_NOSPACE; |
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p->flags &= ~(TERMP_SENTENCE | TERMP_NONEWLINE); |
p->flags &= ~(TERMP_SENTENCE | TERMP_NONEWLINE); |
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p->skipvsp = 0; |
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while ('\0' != *word) { |
while ('\0' != *word) { |
if ('\\' != *word) { |
if ('\\' != *word) { |
if (TERMP_SKIPCHAR & p->flags) { |
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p->flags &= ~TERMP_SKIPCHAR; |
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word++; |
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continue; |
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} |
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if (TERMP_NBRWORD & p->flags) { |
if (TERMP_NBRWORD & p->flags) { |
if (' ' == *word) { |
if (' ' == *word) { |
encode(p, nbrsp, 1); |
encode(p, nbrsp, 1); |
Line 487 term_word(struct termp *p, const char *word) |
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Line 482 term_word(struct termp *p, const char *word) |
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term_fontlast(p); |
term_fontlast(p); |
continue; |
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 | TERMP_NONEWLINE); |
p->flags |= (TERMP_NOSPACE | TERMP_NONEWLINE); |
continue; |
continue; |
case ESCAPE_SKIPCHAR: |
case ESCAPE_SKIPCHAR: |
p->flags |= TERMP_SKIPCHAR; |
p->flags |= TERMP_BACKAFTER; |
continue; |
continue; |
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case ESCAPE_OVERSTRIKE: |
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cp = seq + sz; |
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while (seq < cp) { |
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if (*seq == '\\') { |
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mandoc_escape(&seq, NULL, NULL); |
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continue; |
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} |
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encode1(p, *seq++); |
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if (seq < cp) { |
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if (p->flags & TERMP_BACKBEFORE) |
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p->flags |= TERMP_BACKAFTER; |
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else |
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p->flags |= TERMP_BACKBEFORE; |
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} |
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} |
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/* Trim trailing backspace/blank pair. */ |
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if (p->col > 2 && p->buf[p->col - 1] == ' ') |
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p->col -= 2; |
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continue; |
default: |
default: |
continue; |
continue; |
} |
} |
Line 549 encode1(struct termp *p, int c) |
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Line 563 encode1(struct termp *p, int c) |
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{ |
{ |
enum termfont f; |
enum termfont f; |
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if (TERMP_SKIPCHAR & p->flags) { |
if (p->col + 7 >= p->maxcols) |
p->flags &= ~TERMP_SKIPCHAR; |
adjbuf(p, p->col + 7); |
return; |
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} |
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if (p->col + 6 >= p->maxcols) |
f = (c == ASCII_HYPH || isgraph(c)) ? |
adjbuf(p, p->col + 6); |
p->fontq[p->fonti] : TERMFONT_NONE; |
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f = *term_fontq(p); |
if (p->flags & TERMP_BACKBEFORE) { |
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if (p->buf[p->col - 1] == ' ') |
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p->col--; |
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else |
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p->buf[p->col++] = 8; |
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p->flags &= ~TERMP_BACKBEFORE; |
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} |
if (TERMFONT_UNDER == f || TERMFONT_BI == f) { |
if (TERMFONT_UNDER == f || TERMFONT_BI == f) { |
p->buf[p->col++] = '_'; |
p->buf[p->col++] = '_'; |
p->buf[p->col++] = 8; |
p->buf[p->col++] = 8; |
Line 571 encode1(struct termp *p, int c) |
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Line 588 encode1(struct termp *p, int c) |
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p->buf[p->col++] = 8; |
p->buf[p->col++] = 8; |
} |
} |
p->buf[p->col++] = c; |
p->buf[p->col++] = c; |
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if (p->flags & TERMP_BACKAFTER) { |
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p->flags |= TERMP_BACKBEFORE; |
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p->flags &= ~TERMP_BACKAFTER; |
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} |
} |
} |
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static void |
static void |
Line 578 encode(struct termp *p, const char *word, size_t sz) |
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Line 599 encode(struct termp *p, const char *word, size_t sz) |
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{ |
{ |
size_t i; |
size_t i; |
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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; |
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} |
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/* |
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* Encode and buffer a string of characters. If the current |
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* font mode is unset, buffer directly, else encode then buffer |
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* character by character. |
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*/ |
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if (*term_fontq(p) == TERMFONT_NONE) { |
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if (p->col + sz >= p->maxcols) |
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adjbuf(p, p->col + sz); |
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for (i = 0; i < sz; i++) |
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p->buf[p->col++] = word[i]; |
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return; |
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} |
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/* Pre-buffer, assuming worst-case. */ |
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if (p->col + 1 + (sz * 5) >= p->maxcols) |
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adjbuf(p, p->col + 1 + (sz * 5)); |
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for (i = 0; i < sz; i++) { |
for (i = 0; i < sz; i++) { |
if (ASCII_HYPH == word[i] || |
if (ASCII_HYPH == word[i] || |
isgraph((unsigned char)word[i])) |
isgraph((unsigned char)word[i])) |
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term_setwidth(struct termp *p, const char *wstr) |
term_setwidth(struct termp *p, const char *wstr) |
{ |
{ |
struct roffsu su; |
struct roffsu su; |
size_t width; |
int iop, width; |
int iop; |
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iop = 0; |
iop = 0; |
width = 0; |
width = 0; |
Line 716 term_strlen(const struct termp *p, const char *cp) |
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Line 715 term_strlen(const struct termp *p, const char *cp) |
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case ESCAPE_SKIPCHAR: |
case ESCAPE_SKIPCHAR: |
skip = 1; |
skip = 1; |
continue; |
continue; |
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case ESCAPE_OVERSTRIKE: |
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rsz = 0; |
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rhs = seq + ssz; |
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while (seq < rhs) { |
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if (*seq == '\\') { |
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mandoc_escape(&seq, NULL, NULL); |
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continue; |
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} |
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i = (*p->width)(p, *seq++); |
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if (rsz < i) |
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rsz = i; |
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} |
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sz += rsz; |
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continue; |
default: |
default: |
continue; |
continue; |
} |
} |
Line 807 term_vspan(const struct termp *p, const struct roffsu |
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Line 820 term_vspan(const struct termp *p, const struct roffsu |
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break; |
break; |
default: |
default: |
abort(); |
abort(); |
/* NOTREACHED */ |
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} |
} |
ri = r > 0.0 ? r + 0.4995 : r - 0.4995; |
ri = r > 0.0 ? r + 0.4995 : r - 0.4995; |
return(ri < 66 ? ri : 1); |
return(ri < 66 ? ri : 1); |
} |
} |
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/* |
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* Convert a scaling width to basic units, rounding down. |
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*/ |
int |
int |
term_hspan(const struct termp *p, const struct roffsu *su) |
term_hspan(const struct termp *p, const struct roffsu *su) |
{ |
{ |
double v; |
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v = (*p->hspan)(p, su); |
return((*p->hspan)(p, su)); |
return(v > 0.0 ? v + 0.0005 : v - 0.0005); |
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} |
} |