version 1.200, 2011/09/19 22:36:16 |
version 1.213, 2013/12/24 23:04:36 |
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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, 2011 Ingo Schwarze <schwarze@openbsd.org> |
* Copyright (c) 2010, 2011, 2012, 2013 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 |
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#include "term.h" |
#include "term.h" |
#include "main.h" |
#include "main.h" |
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static void adjbuf(struct termp *p, int); |
static size_t cond_width(const struct termp *, int, int *); |
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static void adjbuf(struct termp *p, size_t); |
static void bufferc(struct termp *, char); |
static void bufferc(struct termp *, char); |
static void encode(struct termp *, const char *, size_t); |
static void encode(struct termp *, const char *, size_t); |
static void encode1(struct termp *, int); |
static void encode1(struct termp *, int); |
Line 82 term_end(struct termp *p) |
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Line 83 term_end(struct termp *p) |
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* - TERMP_NOBREAK: this is the most important and is used when making |
* - TERMP_NOBREAK: this is the most important and is used when making |
* columns. In short: don't print a newline and instead expect the |
* 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. |
* next call to do the padding up to the start of the next column. |
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* p->trailspace may be set to 0, 1, or 2, depending on how many |
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* space characters are required at the end of the column. |
* |
* |
* - TERMP_TWOSPACE: make sure there is room for at least two space |
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* characters of padding. Otherwise, rather break the line. |
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* |
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* - TERMP_DANGLE: don't newline when TERMP_NOBREAK is specified and |
* - TERMP_DANGLE: don't newline when TERMP_NOBREAK is specified and |
* the line is overrun, and don't pad-right if it's underrun. |
* the line is overrun, and don't pad-right if it's underrun. |
* |
* |
Line 104 term_end(struct termp *p) |
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Line 104 term_end(struct termp *p) |
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void |
void |
term_flushln(struct termp *p) |
term_flushln(struct termp *p) |
{ |
{ |
int i; /* current input position in p->buf */ |
size_t i; /* current input position in p->buf */ |
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int ntab; /* number of tabs to prepend */ |
size_t vis; /* current visual position on output */ |
size_t vis; /* current visual position on output */ |
size_t vbl; /* number of blanks to prepend to output */ |
size_t vbl; /* number of blanks to prepend to output */ |
size_t vend; /* end of word visual position on output */ |
size_t vend; /* end of word visual position on output */ |
size_t bp; /* visual right border position */ |
size_t bp; /* visual right border position */ |
size_t dv; /* temporary for visual pos calculations */ |
size_t dv; /* temporary for visual pos calculations */ |
int j; /* temporary loop index for p->buf */ |
size_t j; /* temporary loop index for p->buf */ |
int jhy; /* last hyph before overflow w/r/t j */ |
size_t jhy; /* last hyph before overflow w/r/t j */ |
size_t maxvis; /* output position of visible boundary */ |
size_t maxvis; /* output position of visible boundary */ |
size_t mmax; /* used in calculating bp */ |
size_t mmax; /* used in calculating bp */ |
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Line 119 term_flushln(struct termp *p) |
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Line 120 term_flushln(struct termp *p) |
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* First, establish the maximum columns of "visible" content. |
* First, establish the maximum columns of "visible" content. |
* This is usually the difference between the right-margin and |
* This is usually the difference between the right-margin and |
* an indentation, but can be, for tagged lists or columns, a |
* an indentation, but can be, for tagged lists or columns, a |
* small set of values. |
* small set of values. |
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* |
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* The following unsigned-signed subtractions look strange, |
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* but they are actually correct. If the int p->overstep |
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* is negative, it gets sign extended. Subtracting that |
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* very large size_t effectively adds a small number to dv. |
*/ |
*/ |
assert (p->rmargin >= p->offset); |
assert (p->rmargin >= p->offset); |
dv = p->rmargin - p->offset; |
dv = p->rmargin - p->offset; |
Line 143 term_flushln(struct termp *p) |
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Line 149 term_flushln(struct termp *p) |
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* Handle literal tab characters: collapse all |
* Handle literal tab characters: collapse all |
* subsequent tabs into a single huge set of spaces. |
* subsequent tabs into a single huge set of spaces. |
*/ |
*/ |
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ntab = 0; |
while (i < p->col && '\t' == p->buf[i]) { |
while (i < p->col && '\t' == p->buf[i]) { |
vend = (vis / p->tabwidth + 1) * p->tabwidth; |
vend = (vis / p->tabwidth + 1) * p->tabwidth; |
vbl += vend - vis; |
vbl += vend - vis; |
vis = vend; |
vis = vend; |
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ntab++; |
i++; |
i++; |
} |
} |
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Line 158 term_flushln(struct termp *p) |
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Line 166 term_flushln(struct termp *p) |
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*/ |
*/ |
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for (j = i, jhy = 0; j < p->col; j++) { |
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; |
break; |
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/* Back over the the last printed character. */ |
/* Back over the the last printed character. */ |
Line 184 term_flushln(struct termp *p) |
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Line 192 term_flushln(struct termp *p) |
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if (vend > bp && 0 == jhy && vis > 0) { |
if (vend > bp && 0 == jhy && vis > 0) { |
vend -= vis; |
vend -= vis; |
(*p->endline)(p); |
(*p->endline)(p); |
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p->viscol = 0; |
if (TERMP_NOBREAK & p->flags) { |
if (TERMP_NOBREAK & p->flags) { |
p->viscol = p->rmargin; |
vbl = p->rmargin; |
(*p->advance)(p, p->rmargin); |
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vend += p->rmargin - p->offset; |
vend += p->rmargin - p->offset; |
} else { |
} else |
p->viscol = 0; |
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vbl = p->offset; |
vbl = p->offset; |
} |
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/* Remove the p->overstep width. */ |
/* use pending tabs on the new line */ |
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if (0 < ntab) |
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vbl += ntab * p->tabwidth; |
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/* |
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* Remove the p->overstep width. |
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* Again, if p->overstep is negative, |
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* sign extension does the right thing. |
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*/ |
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bp += (size_t)p->overstep; |
bp += (size_t)p->overstep; |
p->overstep = 0; |
p->overstep = 0; |
} |
} |
Line 209 term_flushln(struct termp *p) |
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Line 224 term_flushln(struct termp *p) |
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j = i; |
j = i; |
while (' ' == p->buf[i]) |
while (' ' == p->buf[i]) |
i++; |
i++; |
dv = (size_t)(i - j) * (*p->width)(p, ' '); |
dv = (i - j) * (*p->width)(p, ' '); |
vbl += dv; |
vbl += dv; |
vend += dv; |
vend += dv; |
break; |
break; |
Line 262 term_flushln(struct termp *p) |
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Line 277 term_flushln(struct termp *p) |
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} |
} |
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if (TERMP_HANG & p->flags) { |
if (TERMP_HANG & p->flags) { |
/* We need one blank after the tag. */ |
p->overstep = (int)(vis - maxvis + |
p->overstep = (int)(vis - maxvis + (*p->width)(p, ' ')); |
p->trailspace * (*p->width)(p, ' ')); |
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/* |
/* |
* Behave exactly the same way as groff: |
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* If we have overstepped the margin, temporarily move |
* If we have overstepped the margin, temporarily move |
* it to the right and flag the rest of the line to be |
* it to the right and flag the rest of the line to be |
* shorter. |
* shorter. |
* If we landed right at the margin, be happy. |
* If there is a request to keep the columns together, |
* If we are one step before the margin, temporarily |
* allow negative overstep when the column is not full. |
* move it one step LEFT and flag the rest of the line |
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* to be longer. |
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*/ |
*/ |
if (p->overstep < -1) |
if (p->trailspace && p->overstep < 0) |
p->overstep = 0; |
p->overstep = 0; |
return; |
return; |
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Line 283 term_flushln(struct termp *p) |
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Line 295 term_flushln(struct termp *p) |
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return; |
return; |
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/* If the column was overrun, break the line. */ |
/* If the column was overrun, break the line. */ |
if (maxvis <= vis + |
if (maxvis < vis + p->trailspace * (*p->width)(p, ' ')) { |
((TERMP_TWOSPACE & p->flags) ? (*p->width)(p, ' ') : 0)) { |
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(*p->endline)(p); |
(*p->endline)(p); |
p->viscol = 0; |
p->viscol = 0; |
} |
} |
Line 318 term_vspace(struct termp *p) |
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Line 329 term_vspace(struct termp *p) |
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term_newln(p); |
term_newln(p); |
p->viscol = 0; |
p->viscol = 0; |
(*p->endline)(p); |
if (0 < p->skipvsp) |
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p->skipvsp--; |
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else |
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(*p->endline)(p); |
} |
} |
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void |
void |
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term_fontpopq(struct termp *p, const void *key) |
term_fontpopq(struct termp *p, const void *key) |
{ |
{ |
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while (p->fonti >= 0 && key != &p->fontq[p->fonti]) |
while (p->fonti >= 0 && key < (void *)(p->fontq + p->fonti)) |
p->fonti--; |
p->fonti--; |
assert(p->fonti >= 0); |
assert(p->fonti >= 0); |
} |
} |
Line 401 term_word(struct termp *p, const char *word) |
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Line 415 term_word(struct termp *p, const char *word) |
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if ( ! (TERMP_NOSPACE & p->flags)) { |
if ( ! (TERMP_NOSPACE & p->flags)) { |
if ( ! (TERMP_KEEP & p->flags)) { |
if ( ! (TERMP_KEEP & p->flags)) { |
if (TERMP_PREKEEP & p->flags) |
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p->flags |= TERMP_KEEP; |
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bufferc(p, ' '); |
bufferc(p, ' '); |
if (TERMP_SENTENCE & p->flags) |
if (TERMP_SENTENCE & p->flags) |
bufferc(p, ' '); |
bufferc(p, ' '); |
} else |
} else |
bufferc(p, ASCII_NBRSP); |
bufferc(p, ASCII_NBRSP); |
} |
} |
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if (TERMP_PREKEEP & p->flags) |
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p->flags |= TERMP_KEEP; |
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if ( ! (p->flags & TERMP_NONOSPACE)) |
if ( ! (p->flags & TERMP_NONOSPACE)) |
p->flags &= ~TERMP_NOSPACE; |
p->flags &= ~TERMP_NOSPACE; |
else |
else |
p->flags |= TERMP_NOSPACE; |
p->flags |= TERMP_NOSPACE; |
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p->flags &= ~(TERMP_SENTENCE | TERMP_IGNDELIM); |
p->flags &= ~TERMP_SENTENCE; |
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while ('\0' != *word) { |
while ('\0' != *word) { |
if ((ssz = strcspn(word, "\\")) > 0) |
if ('\\' != *word) { |
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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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ssz = strcspn(word, "\\"); |
encode(p, word, ssz); |
encode(p, word, ssz); |
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word += (int)ssz; |
word += (int)ssz; |
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if ('\\' != *word) |
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continue; |
continue; |
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} |
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word++; |
word++; |
esc = mandoc_escape(&word, &seq, &sz); |
esc = mandoc_escape(&word, &seq, &sz); |
Line 470 term_word(struct termp *p, const char *word) |
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Line 489 term_word(struct termp *p, const char *word) |
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case (ESCAPE_FONTITALIC): |
case (ESCAPE_FONTITALIC): |
term_fontrepl(p, TERMFONT_UNDER); |
term_fontrepl(p, TERMFONT_UNDER); |
break; |
break; |
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case (ESCAPE_FONTBI): |
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term_fontrepl(p, TERMFONT_BI); |
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break; |
case (ESCAPE_FONT): |
case (ESCAPE_FONT): |
/* FALLTHROUGH */ |
/* FALLTHROUGH */ |
case (ESCAPE_FONTROMAN): |
case (ESCAPE_FONTROMAN): |
Line 479 term_word(struct termp *p, const char *word) |
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Line 501 term_word(struct termp *p, const char *word) |
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term_fontlast(p); |
term_fontlast(p); |
break; |
break; |
case (ESCAPE_NOSPACE): |
case (ESCAPE_NOSPACE): |
if ('\0' == *word) |
if (TERMP_SKIPCHAR & p->flags) |
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p->flags &= ~TERMP_SKIPCHAR; |
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else if ('\0' == *word) |
p->flags |= TERMP_NOSPACE; |
p->flags |= TERMP_NOSPACE; |
break; |
break; |
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case (ESCAPE_SKIPCHAR): |
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p->flags |= TERMP_SKIPCHAR; |
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break; |
default: |
default: |
break; |
break; |
} |
} |
Line 489 term_word(struct termp *p, const char *word) |
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Line 516 term_word(struct termp *p, const char *word) |
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} |
} |
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static void |
static void |
adjbuf(struct termp *p, int sz) |
adjbuf(struct termp *p, size_t sz) |
{ |
{ |
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if (0 == p->maxcols) |
if (0 == p->maxcols) |
Line 497 adjbuf(struct termp *p, int sz) |
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Line 524 adjbuf(struct termp *p, int sz) |
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while (sz >= p->maxcols) |
while (sz >= p->maxcols) |
p->maxcols <<= 2; |
p->maxcols <<= 2; |
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p->buf = mandoc_realloc |
p->buf = mandoc_realloc(p->buf, sizeof(int) * p->maxcols); |
(p->buf, sizeof(int) * (size_t)p->maxcols); |
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} |
} |
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static void |
static void |
Line 521 encode1(struct termp *p, int c) |
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Line 547 encode1(struct termp *p, int c) |
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{ |
{ |
enum termfont f; |
enum termfont f; |
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if (p->col + 4 >= p->maxcols) |
if (TERMP_SKIPCHAR & p->flags) { |
adjbuf(p, p->col + 4); |
p->flags &= ~TERMP_SKIPCHAR; |
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return; |
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} |
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if (p->col + 6 >= p->maxcols) |
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adjbuf(p, p->col + 6); |
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f = term_fonttop(p); |
f = term_fonttop(p); |
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if (TERMFONT_NONE == f) { |
if (TERMFONT_UNDER == f || TERMFONT_BI == f) { |
p->buf[p->col++] = c; |
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return; |
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} else if (TERMFONT_UNDER == f) { |
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p->buf[p->col++] = '_'; |
p->buf[p->col++] = '_'; |
} else |
p->buf[p->col++] = 8; |
p->buf[p->col++] = c; |
} |
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if (TERMFONT_BOLD == f || TERMFONT_BI == f) { |
p->buf[p->col++] = 8; |
if (ASCII_HYPH == c) |
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p->buf[p->col++] = '-'; |
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else |
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p->buf[p->col++] = c; |
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p->buf[p->col++] = 8; |
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} |
p->buf[p->col++] = c; |
p->buf[p->col++] = c; |
} |
} |
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static void |
static void |
encode(struct termp *p, const char *word, size_t sz) |
encode(struct termp *p, const char *word, size_t sz) |
{ |
{ |
enum termfont f; |
size_t i; |
int i, len; |
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/* LINTED */ |
if (TERMP_SKIPCHAR & p->flags) { |
len = sz; |
p->flags &= ~TERMP_SKIPCHAR; |
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return; |
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} |
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/* |
/* |
* Encode and buffer a string of characters. If the current |
* Encode and buffer a string of characters. If the current |
Line 553 encode(struct termp *p, const char *word, size_t sz) |
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Line 587 encode(struct termp *p, const char *word, size_t sz) |
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* character by character. |
* character by character. |
*/ |
*/ |
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if (TERMFONT_NONE == (f = term_fonttop(p))) { |
if (TERMFONT_NONE == term_fonttop(p)) { |
if (p->col + len >= p->maxcols) |
if (p->col + sz >= p->maxcols) |
adjbuf(p, p->col + len); |
adjbuf(p, p->col + sz); |
for (i = 0; i < len; i++) |
for (i = 0; i < sz; i++) |
p->buf[p->col++] = word[i]; |
p->buf[p->col++] = word[i]; |
return; |
return; |
} |
} |
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/* Pre-buffer, assuming worst-case. */ |
/* Pre-buffer, assuming worst-case. */ |
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if (p->col + 1 + (len * 3) >= p->maxcols) |
if (p->col + 1 + (sz * 5) >= p->maxcols) |
adjbuf(p, p->col + 1 + (len * 3)); |
adjbuf(p, p->col + 1 + (sz * 5)); |
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for (i = 0; i < len; 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])) |
p->buf[p->col++] = word[i]; |
encode1(p, word[i]); |
continue; |
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} |
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if (TERMFONT_UNDER == f) |
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p->buf[p->col++] = '_'; |
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else if (ASCII_HYPH == word[i]) |
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p->buf[p->col++] = '-'; |
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else |
else |
p->buf[p->col++] = word[i]; |
p->buf[p->col++] = word[i]; |
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p->buf[p->col++] = 8; |
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p->buf[p->col++] = word[i]; |
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} |
} |
} |
} |
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Line 592 term_len(const struct termp *p, size_t sz) |
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Line 616 term_len(const struct termp *p, size_t sz) |
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return((*p->width)(p, ' ') * sz); |
return((*p->width)(p, ' ') * sz); |
} |
} |
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static size_t |
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cond_width(const struct termp *p, int c, int *skip) |
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{ |
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if (*skip) { |
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(*skip) = 0; |
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return(0); |
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} else |
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return((*p->width)(p, c)); |
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} |
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size_t |
size_t |
term_strlen(const struct termp *p, const char *cp) |
term_strlen(const struct termp *p, const char *cp) |
{ |
{ |
size_t sz, rsz, i; |
size_t sz, rsz, i; |
int ssz, c; |
int ssz, skip, c; |
const char *seq, *rhs; |
const char *seq, *rhs; |
enum mandoc_esc esc; |
enum mandoc_esc esc; |
static const char rej[] = { '\\', ASCII_HYPH, ASCII_NBRSP, '\0' }; |
static const char rej[] = { '\\', ASCII_HYPH, ASCII_NBRSP, '\0' }; |
Line 609 term_strlen(const struct termp *p, const char *cp) |
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Line 643 term_strlen(const struct termp *p, const char *cp) |
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*/ |
*/ |
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sz = 0; |
sz = 0; |
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skip = 0; |
while ('\0' != *cp) { |
while ('\0' != *cp) { |
rsz = strcspn(cp, rej); |
rsz = strcspn(cp, rej); |
for (i = 0; i < rsz; i++) |
for (i = 0; i < rsz; i++) |
sz += (*p->width)(p, *cp++); |
sz += cond_width(p, *cp++, &skip); |
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c = 0; |
c = 0; |
switch (*cp) { |
switch (*cp) { |
Line 629 term_strlen(const struct termp *p, const char *cp) |
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Line 664 term_strlen(const struct termp *p, const char *cp) |
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(seq + 1, ssz - 1); |
(seq + 1, ssz - 1); |
if ('\0' == c) |
if ('\0' == c) |
break; |
break; |
sz += (*p->width)(p, c); |
sz += cond_width(p, c, &skip); |
continue; |
continue; |
case (ESCAPE_SPECIAL): |
case (ESCAPE_SPECIAL): |
c = mchars_spec2cp |
c = mchars_spec2cp |
(p->symtab, seq, ssz); |
(p->symtab, seq, ssz); |
if (c <= 0) |
if (c <= 0) |
break; |
break; |
sz += (*p->width)(p, c); |
sz += cond_width(p, c, &skip); |
continue; |
continue; |
default: |
default: |
break; |
break; |
Line 646 term_strlen(const struct termp *p, const char *cp) |
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Line 681 term_strlen(const struct termp *p, const char *cp) |
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switch (esc) { |
switch (esc) { |
case (ESCAPE_UNICODE): |
case (ESCAPE_UNICODE): |
sz += (*p->width)(p, '?'); |
sz += cond_width(p, '?', &skip); |
break; |
break; |
case (ESCAPE_NUMBERED): |
case (ESCAPE_NUMBERED): |
c = mchars_num2char(seq, ssz); |
c = mchars_num2char(seq, ssz); |
if ('\0' != c) |
if ('\0' != c) |
sz += (*p->width)(p, c); |
sz += cond_width(p, c, &skip); |
break; |
break; |
case (ESCAPE_SPECIAL): |
case (ESCAPE_SPECIAL): |
rhs = mchars_spec2str |
rhs = mchars_spec2str |
Line 663 term_strlen(const struct termp *p, const char *cp) |
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Line 698 term_strlen(const struct termp *p, const char *cp) |
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rhs = seq; |
rhs = seq; |
rsz = ssz; |
rsz = ssz; |
break; |
break; |
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case (ESCAPE_SKIPCHAR): |
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skip = 1; |
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break; |
default: |
default: |
break; |
break; |
} |
} |
Line 670 term_strlen(const struct termp *p, const char *cp) |
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Line 708 term_strlen(const struct termp *p, const char *cp) |
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if (NULL == rhs) |
if (NULL == rhs) |
break; |
break; |
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|
|
if (skip) { |
|
skip = 0; |
|
break; |
|
} |
|
|
for (i = 0; i < rsz; i++) |
for (i = 0; i < rsz; i++) |
sz += (*p->width)(p, *rhs++); |
sz += (*p->width)(p, *rhs++); |
break; |
break; |
case (ASCII_NBRSP): |
case (ASCII_NBRSP): |
sz += (*p->width)(p, ' '); |
sz += cond_width(p, ' ', &skip); |
cp++; |
cp++; |
break; |
break; |
case (ASCII_HYPH): |
case (ASCII_HYPH): |
sz += (*p->width)(p, '-'); |
sz += cond_width(p, '-', &skip); |
cp++; |
cp++; |
break; |
break; |
default: |
default: |