version 1.154, 2010/06/28 23:26:09 |
version 1.195, 2011/05/18 23:59:08 |
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/* $Id$ */ |
/* $Id$ */ |
/* |
/* |
* Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@bsd.lv> |
* Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv> |
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* Copyright (c) 2010, 2011 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 <string.h> |
#include <string.h> |
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#include "mandoc.h" |
#include "mandoc.h" |
#include "chars.h" |
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#include "out.h" |
#include "out.h" |
#include "term.h" |
#include "term.h" |
#include "main.h" |
#include "main.h" |
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static void spec(struct termp *, const char *, size_t); |
static void adjbuf(struct termp *p, int); |
static void res(struct termp *, const char *, size_t); |
static void bufferc(struct termp *, char); |
static void buffera(struct termp *, const char *, size_t); |
static void encode(struct termp *, const char *, size_t); |
static void bufferc(struct termp *, char); |
static void encode1(struct termp *, int); |
static void adjbuf(struct termp *p, size_t); |
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static void encode(struct termp *, const char *, size_t); |
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void |
void |
term_free(struct termp *p) |
term_free(struct termp *p) |
{ |
{ |
Line 48 term_free(struct termp *p) |
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Line 45 term_free(struct termp *p) |
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if (p->buf) |
if (p->buf) |
free(p->buf); |
free(p->buf); |
if (p->symtab) |
if (p->symtab) |
chars_free(p->symtab); |
mchars_free(p->symtab); |
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free(p); |
free(p); |
} |
} |
Line 73 term_end(struct termp *p) |
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Line 70 term_end(struct termp *p) |
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(*p->end)(p); |
(*p->end)(p); |
} |
} |
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struct termp * |
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term_alloc(enum termenc enc) |
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{ |
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struct termp *p; |
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p = calloc(1, sizeof(struct termp)); |
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if (NULL == p) { |
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perror(NULL); |
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exit(EXIT_FAILURE); |
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} |
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p->enc = enc; |
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return(p); |
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} |
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/* |
/* |
* Flush a line of text. A "line" is loosely defined as being something |
* 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 |
* that should be followed by a newline, regardless of whether it's |
Line 133 term_flushln(struct termp *p) |
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Line 113 term_flushln(struct termp *p) |
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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 */ |
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size_t dv; /* temporary for visual pos calculations */ |
int j; /* temporary loop index for p->buf */ |
int j; /* temporary loop index for p->buf */ |
int jhy; /* last hyph before overflow w/r/t j */ |
int 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 */ |
Line 144 term_flushln(struct termp *p) |
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Line 125 term_flushln(struct termp *p) |
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* 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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assert (p->rmargin >= p->offset); |
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dv = p->rmargin - p->offset; |
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maxvis = (int)dv > p->overstep ? dv - (size_t)p->overstep : 0; |
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dv = p->maxrmargin - p->offset; |
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mmax = (int)dv > p->overstep ? dv - (size_t)p->overstep : 0; |
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assert(p->offset < p->rmargin); |
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maxvis = (int)(p->rmargin - p->offset) - p->overstep < 0 ? |
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/* LINTED */ |
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0 : p->rmargin - p->offset - p->overstep; |
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mmax = (int)(p->maxrmargin - p->offset) - p->overstep < 0 ? |
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/* LINTED */ |
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0 : p->maxrmargin - p->offset - p->overstep; |
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bp = TERMP_NOBREAK & p->flags ? mmax : maxvis; |
bp = TERMP_NOBREAK & p->flags ? mmax : maxvis; |
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/* |
/* |
* Indent the first line of a paragraph. |
* Indent the first line of a paragraph. |
*/ |
*/ |
vbl = p->flags & TERMP_NOLPAD ? 0 : p->offset; |
vbl = p->flags & TERMP_NOLPAD ? (size_t)0 : p->offset; |
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vis = vend = i = 0; |
vis = vend = 0; |
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i = 0; |
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while (i < (int)p->col) { |
while (i < p->col) { |
/* |
/* |
* 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. |
*/ |
*/ |
for (j = i; j < (int)p->col; j++) { |
while (i < p->col && '\t' == p->buf[i]) { |
if ('\t' != p->buf[j]) |
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break; |
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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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i++; |
} |
} |
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/* |
/* |
Line 183 term_flushln(struct termp *p) |
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Line 160 term_flushln(struct termp *p) |
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* space is printed according to regular spacing rules). |
* space is printed according to regular spacing rules). |
*/ |
*/ |
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/* LINTED */ |
for (j = i, jhy = 0; j < p->col; j++) { |
for (jhy = 0; j < (int)p->col; j++) { |
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if ((j && ' ' == p->buf[j]) || '\t' == p->buf[j]) |
if ((j && ' ' == p->buf[j]) || '\t' == p->buf[j]) |
break; |
break; |
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Line 222 term_flushln(struct termp *p) |
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Line 198 term_flushln(struct termp *p) |
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/* Remove the p->overstep width. */ |
/* Remove the p->overstep width. */ |
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bp += (int)/* LINTED */ |
bp += (size_t)p->overstep; |
p->overstep; |
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p->overstep = 0; |
p->overstep = 0; |
} |
} |
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/* |
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* Skip leading tabs, they were handled above. |
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*/ |
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while (i < (int)p->col && '\t' == p->buf[i]) |
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i++; |
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/* Write out the [remaining] word. */ |
/* Write out the [remaining] word. */ |
for ( ; i < (int)p->col; i++) { |
for ( ; i < p->col; i++) { |
if (vend > bp && jhy > 0 && i > jhy) |
if (vend > bp && jhy > 0 && i > jhy) |
break; |
break; |
if ('\t' == p->buf[i]) |
if ('\t' == p->buf[i]) |
break; |
break; |
if (' ' == p->buf[i]) { |
if (' ' == p->buf[i]) { |
while (' ' == p->buf[i]) { |
j = i; |
vbl += (*p->width)(p, p->buf[i]); |
while (' ' == p->buf[i]) |
i++; |
i++; |
} |
dv = (size_t)(i - j) * (*p->width)(p, ' '); |
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vbl += dv; |
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vend += dv; |
break; |
break; |
} |
} |
if (ASCII_NBRSP == p->buf[i]) { |
if (ASCII_NBRSP == p->buf[i]) { |
Line 270 term_flushln(struct termp *p) |
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Line 241 term_flushln(struct termp *p) |
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p->viscol += (*p->width)(p, p->buf[i]); |
p->viscol += (*p->width)(p, p->buf[i]); |
} |
} |
} |
} |
vend += vbl; |
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vis = vend; |
vis = vend; |
} |
} |
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/* |
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* If there was trailing white space, it was not printed; |
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* so reset the cursor position accordingly. |
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*/ |
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vis -= vbl; |
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p->col = 0; |
p->col = 0; |
p->overstep = 0; |
p->overstep = 0; |
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Line 285 term_flushln(struct termp *p) |
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Line 261 term_flushln(struct termp *p) |
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if (TERMP_HANG & p->flags) { |
if (TERMP_HANG & p->flags) { |
/* We need one blank after the tag. */ |
/* We need one blank after the tag. */ |
p->overstep = /* LINTED */ |
p->overstep = (int)(vis - maxvis + (*p->width)(p, ' ')); |
vis - maxvis + (*p->width)(p, ' '); |
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/* |
/* |
* Behave exactly the same way as groff: |
* Behave exactly the same way as groff: |
Line 300 term_flushln(struct termp *p) |
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Line 275 term_flushln(struct termp *p) |
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*/ |
*/ |
if (p->overstep >= -1) { |
if (p->overstep >= -1) { |
assert((int)maxvis + p->overstep >= 0); |
assert((int)maxvis + p->overstep >= 0); |
/* LINTED */ |
maxvis += (size_t)p->overstep; |
maxvis += p->overstep; |
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} else |
} else |
p->overstep = 0; |
p->overstep = 0; |
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Line 309 term_flushln(struct termp *p) |
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Line 283 term_flushln(struct termp *p) |
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return; |
return; |
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/* Right-pad. */ |
/* Right-pad. */ |
if (maxvis > vis + /* LINTED */ |
if (maxvis > vis + |
((TERMP_TWOSPACE & p->flags) ? |
((TERMP_TWOSPACE & p->flags) ? (*p->width)(p, ' ') : 0)) { |
(*p->width)(p, ' ') : 0)) { |
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p->viscol += maxvis - vis; |
p->viscol += maxvis - vis; |
(*p->advance)(p, maxvis - vis); |
(*p->advance)(p, maxvis - vis); |
vis += (maxvis - vis); |
vis += (maxvis - vis); |
Line 357 term_vspace(struct termp *p) |
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Line 330 term_vspace(struct termp *p) |
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(*p->endline)(p); |
(*p->endline)(p); |
} |
} |
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static void |
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spec(struct termp *p, const char *word, size_t len) |
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{ |
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const char *rhs; |
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size_t sz; |
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rhs = chars_a2ascii(p->symtab, word, len, &sz); |
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if (rhs) |
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encode(p, rhs, sz); |
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} |
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static void |
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res(struct termp *p, const char *word, size_t len) |
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{ |
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const char *rhs; |
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size_t sz; |
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rhs = chars_a2res(p->symtab, word, len, &sz); |
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if (rhs) |
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encode(p, rhs, sz); |
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} |
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void |
void |
term_fontlast(struct termp *p) |
term_fontlast(struct termp *p) |
{ |
{ |
Line 446 term_fontpop(struct termp *p) |
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Line 394 term_fontpop(struct termp *p) |
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p->fonti--; |
p->fonti--; |
} |
} |
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/* |
/* |
* Handle pwords, partial words, which may be either a single word or a |
* Handle pwords, partial words, which may be either a single word or a |
* phrase that cannot be broken down (such as a literal string). This |
* phrase that cannot be broken down (such as a literal string). This |
Line 455 term_fontpop(struct termp *p) |
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Line 402 term_fontpop(struct termp *p) |
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void |
void |
term_word(struct termp *p, const char *word) |
term_word(struct termp *p, const char *word) |
{ |
{ |
const char *sv, *seq; |
const char *seq, *cp; |
int sz; |
char c; |
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int sz, uc; |
size_t ssz; |
size_t ssz; |
enum roffdeco deco; |
enum mandoc_esc esc; |
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sv = word; |
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if (word[0] && '\0' == word[1]) |
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switch (word[0]) { |
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case('.'): |
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/* FALLTHROUGH */ |
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case(','): |
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/* FALLTHROUGH */ |
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case(';'): |
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/* FALLTHROUGH */ |
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case(':'): |
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/* FALLTHROUGH */ |
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case('?'): |
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/* FALLTHROUGH */ |
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case('!'): |
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/* FALLTHROUGH */ |
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case(')'): |
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/* FALLTHROUGH */ |
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case(']'): |
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if ( ! (TERMP_IGNDELIM & p->flags)) |
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p->flags |= TERMP_NOSPACE; |
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break; |
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default: |
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break; |
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} |
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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) |
if (TERMP_PREKEEP & p->flags) |
Line 499 term_word(struct termp *p, const char *word) |
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Line 421 term_word(struct termp *p, const char *word) |
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if ( ! (p->flags & TERMP_NONOSPACE)) |
if ( ! (p->flags & TERMP_NONOSPACE)) |
p->flags &= ~TERMP_NOSPACE; |
p->flags &= ~TERMP_NOSPACE; |
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else |
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p->flags |= TERMP_NOSPACE; |
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p->flags &= ~TERMP_SENTENCE; |
p->flags &= ~(TERMP_SENTENCE | TERMP_IGNDELIM); |
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/* FIXME: use strcspn. */ |
while ('\0' != *word) { |
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if ((ssz = strcspn(word, "\\")) > 0) |
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encode(p, word, ssz); |
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while (*word) { |
word += (int)ssz; |
if ('\\' != *word) { |
if ('\\' != *word) |
encode(p, word, 1); |
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word++; |
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continue; |
continue; |
} |
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seq = ++word; |
word++; |
sz = a2roffdeco(&deco, &seq, &ssz); |
esc = mandoc_escape(&word, &seq, &sz); |
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if (ESCAPE_ERROR == esc) |
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break; |
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switch (deco) { |
switch (esc) { |
case (DECO_RESERVED): |
case (ESCAPE_UNICODE): |
res(p, seq, ssz); |
if (TERMENC_ASCII == p->enc) { |
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encode1(p, '?'); |
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break; |
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} |
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uc = mchars_num2uc(seq + 1, sz - 1); |
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if ('\0' != uc) |
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encode1(p, uc); |
break; |
break; |
case (DECO_SPECIAL): |
case (ESCAPE_NUMBERED): |
spec(p, seq, ssz); |
if ('\0' != (c = mchars_num2char(seq, sz))) |
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encode(p, &c, 1); |
break; |
break; |
case (DECO_BOLD): |
case (ESCAPE_PREDEF): |
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cp = mchars_res2str(p->symtab, seq, sz, &ssz); |
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if (NULL != cp) |
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encode(p, cp, ssz); |
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break; |
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case (ESCAPE_SPECIAL): |
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cp = mchars_spec2str(p->symtab, seq, sz, &ssz); |
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if (NULL != cp) |
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encode(p, cp, ssz); |
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else if (1 == ssz) |
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encode(p, seq, sz); |
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break; |
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case (ESCAPE_FONTBOLD): |
term_fontrepl(p, TERMFONT_BOLD); |
term_fontrepl(p, TERMFONT_BOLD); |
break; |
break; |
case (DECO_ITALIC): |
case (ESCAPE_FONTITALIC): |
term_fontrepl(p, TERMFONT_UNDER); |
term_fontrepl(p, TERMFONT_UNDER); |
break; |
break; |
case (DECO_ROMAN): |
case (ESCAPE_FONT): |
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/* FALLTHROUGH */ |
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case (ESCAPE_FONTROMAN): |
term_fontrepl(p, TERMFONT_NONE); |
term_fontrepl(p, TERMFONT_NONE); |
break; |
break; |
case (DECO_PREVIOUS): |
case (ESCAPE_FONTPREV): |
term_fontlast(p); |
term_fontlast(p); |
break; |
break; |
default: |
case (ESCAPE_NOSPACE): |
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if ('\0' == *word) |
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p->flags |= TERMP_NOSPACE; |
break; |
break; |
} |
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word += sz; |
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if (DECO_NOSPACE == deco && '\0' == *word) |
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p->flags |= TERMP_NOSPACE; |
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} |
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/* |
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* Note that we don't process the pipe: the parser sees it as |
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* punctuation, but we don't in terms of typography. |
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*/ |
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if (sv[0] && 0 == sv[1]) |
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switch (sv[0]) { |
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case('('): |
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/* FALLTHROUGH */ |
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case('['): |
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p->flags |= TERMP_NOSPACE; |
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break; |
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default: |
default: |
break; |
break; |
} |
} |
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} |
} |
} |
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static void |
static void |
adjbuf(struct termp *p, size_t sz) |
adjbuf(struct termp *p, int sz) |
{ |
{ |
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if (0 == p->maxcols) |
if (0 == p->maxcols) |
Line 568 adjbuf(struct termp *p, size_t sz) |
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Line 498 adjbuf(struct termp *p, size_t 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 = realloc(p->buf, p->maxcols); |
p->buf = mandoc_realloc |
if (NULL == p->buf) { |
(p->buf, sizeof(int) * (size_t)p->maxcols); |
perror(NULL); |
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exit(EXIT_FAILURE); |
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} |
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} |
} |
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static void |
static void |
buffera(struct termp *p, const char *word, size_t sz) |
bufferc(struct termp *p, char c) |
{ |
{ |
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if (p->col + sz >= p->maxcols) |
if (p->col + 1 >= p->maxcols) |
adjbuf(p, p->col + sz); |
adjbuf(p, p->col + 1); |
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memcpy(&p->buf[(int)p->col], word, sz); |
p->buf[p->col++] = c; |
p->col += sz; |
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} |
} |
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/* |
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* See encode(). |
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* Do this for a single (probably unicode) value. |
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* Does not check for non-decorated glyphs. |
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*/ |
static void |
static void |
bufferc(struct termp *p, char c) |
encode1(struct termp *p, int c) |
{ |
{ |
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enum termfont f; |
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if (p->col + 1 >= p->maxcols) |
if (p->col + 4 >= p->maxcols) |
adjbuf(p, p->col + 1); |
adjbuf(p, p->col + 4); |
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p->buf[(int)p->col++] = c; |
f = term_fonttop(p); |
} |
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if (TERMFONT_NONE == f) { |
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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++] = '_'; |
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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; |
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} |
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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; |
enum termfont f; |
int i; |
int i, len; |
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/* LINTED */ |
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len = sz; |
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/* |
/* |
* Encode and buffer a string of characters. If the current |
* Encode and buffer a string of characters. If the current |
* font mode is unset, buffer directly, else encode then buffer |
* font mode is unset, buffer directly, else encode then buffer |
Line 612 encode(struct termp *p, const char *word, size_t sz) |
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Line 555 encode(struct termp *p, const char *word, size_t sz) |
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*/ |
*/ |
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if (TERMFONT_NONE == (f = term_fonttop(p))) { |
if (TERMFONT_NONE == (f = term_fonttop(p))) { |
buffera(p, word, sz); |
if (p->col + len >= p->maxcols) |
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adjbuf(p, p->col + len); |
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for (i = 0; i < len; i++) |
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p->buf[p->col++] = word[i]; |
return; |
return; |
} |
} |
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for (i = 0; i < (int)sz; i++) { |
/* Pre-buffer, assuming worst-case. */ |
if ( ! isgraph((u_char)word[i])) { |
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bufferc(p, word[i]); |
if (p->col + 1 + (len * 3) >= p->maxcols) |
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adjbuf(p, p->col + 1 + (len * 3)); |
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for (i = 0; i < len; i++) { |
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if ( ! isgraph((unsigned char)word[i])) { |
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p->buf[p->col++] = word[i]; |
continue; |
continue; |
} |
} |
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if (TERMFONT_UNDER == f) |
if (TERMFONT_UNDER == f) |
bufferc(p, '_'); |
p->buf[p->col++] = '_'; |
else |
else |
bufferc(p, word[i]); |
p->buf[p->col++] = word[i]; |
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bufferc(p, 8); |
p->buf[p->col++] = 8; |
bufferc(p, word[i]); |
p->buf[p->col++] = word[i]; |
} |
} |
} |
} |
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size_t |
size_t |
term_len(const struct termp *p, size_t sz) |
term_len(const struct termp *p, size_t sz) |
{ |
{ |
Line 644 term_len(const struct termp *p, size_t sz) |
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Line 594 term_len(const struct termp *p, size_t sz) |
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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; |
size_t sz, rsz, i; |
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int ssz, c; |
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const char *seq, *rhs; |
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static const char rej[] = { '\\', ASCII_HYPH, ASCII_NBRSP, '\0' }; |
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for (sz = 0; *cp; cp++) |
/* |
sz += (*p->width)(p, *cp); |
* Account for escaped sequences within string length |
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* calculations. This follows the logic in term_word() as we |
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* must calculate the width of produced strings. |
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*/ |
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sz = 0; |
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while ('\0' != *cp) { |
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rsz = strcspn(cp, rej); |
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for (i = 0; i < rsz; i++) |
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sz += (*p->width)(p, *cp++); |
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c = 0; |
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switch (*cp) { |
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case ('\\'): |
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cp++; |
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rhs = NULL; |
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switch (mandoc_escape(&cp, &seq, &ssz)) { |
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case (ESCAPE_ERROR): |
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return(sz); |
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case (ESCAPE_UNICODE): |
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if (TERMENC_ASCII != p->enc) { |
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sz += (*p->width)(p, '?'); |
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break; |
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} |
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c = mchars_num2uc(seq + 1, ssz - 1); |
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if ('\0' != c) |
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sz += (*p->width)(p, c); |
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break; |
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case (ESCAPE_NUMBERED): |
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c = mchars_num2char(seq, ssz); |
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if ('\0' != c) |
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sz += (*p->width)(p, c); |
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break; |
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case (ESCAPE_PREDEF): |
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rhs = mchars_res2str |
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(p->symtab, seq, ssz, &rsz); |
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break; |
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case (ESCAPE_SPECIAL): |
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rhs = mchars_spec2str |
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(p->symtab, seq, ssz, &rsz); |
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if (ssz != 1 || rhs) |
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break; |
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rhs = seq; |
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rsz = ssz; |
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break; |
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default: |
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break; |
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} |
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if (NULL == rhs) |
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break; |
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for (i = 0; i < rsz; i++) |
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sz += (*p->width)(p, *rhs++); |
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break; |
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case (ASCII_NBRSP): |
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sz += (*p->width)(p, ' '); |
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cp++; |
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break; |
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case (ASCII_HYPH): |
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sz += (*p->width)(p, '-'); |
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cp++; |
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break; |
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default: |
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break; |
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} |
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} |
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return(sz); |
return(sz); |
} |
} |
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/* ARGSUSED */ |
size_t |
size_t |
term_vspan(const struct termp *p, const struct roffsu *su) |
term_vspan(const struct termp *p, const struct roffsu *su) |
{ |
{ |
Line 688 term_vspan(const struct termp *p, const struct roffsu |
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Line 709 term_vspan(const struct termp *p, const struct roffsu |
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r); |
r); |
} |
} |
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size_t |
size_t |
term_hspan(const struct termp *p, const struct roffsu *su) |
term_hspan(const struct termp *p, const struct roffsu *su) |
{ |
{ |
double r; |
double v; |
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/* XXX: CM, IN, and PT are approximations. */ |
v = ((*p->hspan)(p, su)); |
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if (v < 0.0) |
switch (su->unit) { |
v = 0.0; |
case (SCALE_CM): |
return((size_t) /* LINTED */ |
r = 4 * su->scale; |
v); |
break; |
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case (SCALE_IN): |
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/* XXX: this is an approximation. */ |
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r = 10 * su->scale; |
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break; |
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case (SCALE_PC): |
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r = (10 * su->scale) / 6; |
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break; |
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case (SCALE_PT): |
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r = (10 * su->scale) / 72; |
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break; |
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case (SCALE_MM): |
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r = su->scale / 1000; /* FIXME: double-check. */ |
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break; |
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case (SCALE_VS): |
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r = su->scale * 2 - 1; /* FIXME: double-check. */ |
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break; |
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default: |
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r = su->scale; |
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break; |
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} |
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if (r < 0.0) |
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r = 0.0; |
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return((size_t)/* LINTED */ |
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r); |
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} |
} |
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