version 1.144, 2010/06/08 09:20:08 |
version 1.244, 2015/01/31 00:12:41 |
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/* $Id$ */ |
/* $Id$ */ |
/* |
/* |
* Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se> |
* Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> |
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* 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 |
|
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
*/ |
*/ |
#ifdef HAVE_CONFIG_H |
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#include "config.h" |
#include "config.h" |
#endif |
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#include <sys/types.h> |
#include <sys/types.h> |
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#include <assert.h> |
#include <assert.h> |
#include <ctype.h> |
#include <ctype.h> |
#include <getopt.h> |
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#include <stdint.h> |
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#include <stdio.h> |
#include <stdio.h> |
#include <stdlib.h> |
#include <stdlib.h> |
#include <string.h> |
#include <string.h> |
#include <time.h> |
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#include "mandoc.h" |
#include "mandoc.h" |
#include "chars.h" |
#include "mandoc_aux.h" |
#include "out.h" |
#include "out.h" |
#include "term.h" |
#include "term.h" |
#include "man.h" |
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#include "mdoc.h" |
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#include "main.h" |
#include "main.h" |
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#define PS_CHAR_WIDTH 6 |
static size_t cond_width(const struct termp *, int, int *); |
#define PS_CHAR_HEIGHT 12 |
static void adjbuf(struct termp *p, size_t); |
#define PS_CHAR_TOPMARG (792 - 24) |
static void bufferc(struct termp *, char); |
#define PS_CHAR_TOP (PS_CHAR_TOPMARG - 36) |
static void encode(struct termp *, const char *, size_t); |
#define PS_CHAR_LEFT 36 |
static void encode1(struct termp *, int); |
#define PS_CHAR_BOTMARG 24 |
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#define PS_CHAR_BOT (PS_CHAR_BOTMARG + 36) |
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static struct termp *alloc(char *, enum termenc, enum termtype); |
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static void term_free(struct termp *); |
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static void spec(struct termp *, const char *, size_t); |
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static void res(struct termp *, const char *, size_t); |
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static void buffera(struct termp *, const char *, size_t); |
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static void bufferc(struct termp *, char); |
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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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static void advance(struct termp *, size_t); |
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static void endline(struct termp *); |
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static void letter(struct termp *, char); |
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static void pageopen(struct termp *); |
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void * |
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ascii_alloc(char *outopts) |
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{ |
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return(alloc(outopts, TERMENC_ASCII, TERMTYPE_CHAR)); |
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} |
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void * |
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ps_alloc(void) |
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{ |
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return(alloc(NULL, TERMENC_ASCII, TERMTYPE_PS)); |
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} |
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void |
void |
terminal_free(void *arg) |
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{ |
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term_free((struct termp *)arg); |
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} |
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static void |
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term_free(struct termp *p) |
term_free(struct termp *p) |
{ |
{ |
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if (p->buf) |
free(p->buf); |
free(p->buf); |
free(p->fontq); |
if (p->symtab) |
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chars_free(p->symtab); |
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free(p); |
free(p); |
} |
} |
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/* |
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* Push a single letter into our output engine. |
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*/ |
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static void |
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letter(struct termp *p, char c) |
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{ |
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if (TERMTYPE_CHAR == p->type) { |
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/* |
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* If using the terminal device, just push the letter |
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* out into the screen. |
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*/ |
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putchar(c); |
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return; |
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} |
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if ( ! (PS_INLINE & p->psstate)) { |
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/* |
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* If we're not in a PostScript "word" context, then |
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* open one now at the current cursor. |
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*/ |
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printf("%zu %zu moveto\n", p->pscol, p->psrow); |
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putchar('('); |
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p->psstate |= PS_INLINE; |
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} |
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/* |
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* We need to escape these characters as per the PostScript |
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* specification. We would also escape non-graphable characters |
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* (like tabs), but none of them would get to this point and |
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* it's superfluous to abort() on them. |
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*/ |
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switch (c) { |
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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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putchar('\\'); |
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break; |
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default: |
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break; |
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} |
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/* Write the character and adjust where we are on the page. */ |
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putchar(c); |
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p->pscol += PS_CHAR_WIDTH; |
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} |
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/* |
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* Begin a "terminal" context. Since terminal encompasses PostScript, |
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* the actual terminal, etc., there are a few things we can do here. |
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*/ |
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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 void *arg) |
{ |
{ |
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p->headf = head; |
p->headf = head; |
p->footf = foot; |
p->footf = foot; |
p->argf = arg; |
p->argf = arg; |
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(*p->begin)(p); |
if (TERMTYPE_CHAR == p->type) { |
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/* Emit the header and be done. */ |
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(*p->headf)(p, p->argf); |
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return; |
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} |
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/* |
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* Emit the standard PostScript prologue, set our initial page |
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* position, then run pageopen() on the initial page. |
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*/ |
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printf("%s\n", "%!PS"); |
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printf("%s\n", "/Courier"); |
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printf("%s\n", "10 selectfont"); |
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p->pspage = 1; |
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p->psstate = 0; |
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pageopen(p); |
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} |
} |
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/* |
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* Open a page. This is only used for -Tps at the moment. It opens a |
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* page context, printing the header and the footer. THE OUTPUT BUFFER |
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* MUST BE EMPTY. If it is not, output will ghost on the next line and |
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* we'll be all gross and out of state. |
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*/ |
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static void |
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pageopen(struct termp *p) |
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{ |
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assert(TERMTYPE_PS == p->type); |
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assert(0 == p->psstate); |
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p->pscol = PS_CHAR_LEFT; |
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p->psrow = PS_CHAR_TOPMARG; |
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p->psstate |= PS_MARGINS; |
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(*p->headf)(p, p->argf); |
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endline(p); |
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p->psstate &= ~PS_MARGINS; |
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assert(0 == p->psstate); |
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p->pscol = PS_CHAR_LEFT; |
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p->psrow = PS_CHAR_BOTMARG; |
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p->psstate |= PS_MARGINS; |
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(*p->footf)(p, p->argf); |
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endline(p); |
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p->psstate &= ~PS_MARGINS; |
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assert(0 == p->psstate); |
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p->pscol = PS_CHAR_LEFT; |
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p->psrow = PS_CHAR_TOP; |
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} |
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void |
void |
term_end(struct termp *p) |
term_end(struct termp *p) |
{ |
{ |
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if (TERMTYPE_CHAR == p->type) { |
(*p->end)(p); |
(*p->footf)(p, p->argf); |
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return; |
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} |
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printf("%s\n", "%%END"); |
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} |
} |
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static void |
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endline(struct termp *p) |
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{ |
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if (TERMTYPE_CHAR == p->type) { |
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putchar('\n'); |
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return; |
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} |
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if (PS_INLINE & p->psstate) { |
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printf(") show\n"); |
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p->psstate &= ~PS_INLINE; |
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} |
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if (PS_MARGINS & p->psstate) |
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return; |
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p->pscol = PS_CHAR_LEFT; |
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if (p->psrow >= PS_CHAR_HEIGHT + PS_CHAR_BOT) { |
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p->psrow -= PS_CHAR_HEIGHT; |
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return; |
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} |
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/* |
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* XXX: can't run pageopen() until we're certain a flushln() has |
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* occured, else the buf will reopen in an awkward state on the |
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* next line. |
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*/ |
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printf("showpage\n"); |
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p->psrow = PS_CHAR_TOP; |
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} |
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/* |
/* |
* Advance the output engine by a certain amount of whitespace. |
* Flush a chunk of text. By default, break the output line each time |
*/ |
* the right margin is reached, and continue output on the next line |
static void |
* at the same offset as the chunk itself. By default, also break the |
advance(struct termp *p, size_t len) |
* output line at the end of the chunk. |
{ |
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size_t i; |
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if (TERMTYPE_CHAR == p->type) { |
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/* Just print whitespace on the terminal. */ |
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for (i = 0; i < len; i++) |
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putchar(' '); |
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return; |
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} |
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if (PS_INLINE & p->psstate) { |
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/* Dump out any existing line scope. */ |
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printf(") show\n"); |
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p->psstate &= ~PS_INLINE; |
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} |
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p->pscol += len ? len * PS_CHAR_WIDTH : 0; |
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} |
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static struct termp * |
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alloc(char *outopts, enum termenc enc, enum termtype type) |
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{ |
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struct termp *p; |
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const char *toks[2]; |
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char *v; |
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size_t width; |
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toks[0] = "width"; |
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toks[1] = NULL; |
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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->type = type; |
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p->tabwidth = 5; |
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p->enc = enc; |
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width = 80; |
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while (outopts && *outopts) |
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switch (getsubopt(&outopts, UNCONST(toks), &v)) { |
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case (0): |
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width = (size_t)atoi(v); |
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break; |
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default: |
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break; |
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} |
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/* Enforce some lower boundary. */ |
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if (width < 60) |
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width = 60; |
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p->defrmargin = width - 2; |
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return(p); |
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} |
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/* |
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* Flush a line of text. A "line" is loosely defined as being something |
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* that should be followed by a newline, regardless of whether it's |
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* broken apart by newlines getting there. A line can also be a |
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* fragment of a columnar list (`Bl -tag' or `Bl -column'), which does |
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* not have a trailing newline. |
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* |
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* The following flags may be specified: |
* The following flags may be specified: |
* |
* |
* - TERMP_NOLPAD: when beginning to write the line, don't left-pad the |
* - TERMP_NOBREAK: Do not break the output line at the right margin, |
* offset value. This is useful when doing columnar lists where the |
* but only at the max right margin. Also, do not break the output |
* prior column has right-padded. |
* line at the end of the chunk, such that the next call can pad to |
* |
* the next column. However, if less than p->trailspace blanks, |
* - TERMP_NOBREAK: this is the most important and is used when making |
* which can be 0, 1, or 2, remain to the right margin, the line |
* columns. In short: don't print a newline and instead pad to the |
* will be broken. |
* right margin. Used in conjunction with TERMP_NOLPAD. |
* - 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 |
* - TERMP_TWOSPACE: when padding, make sure there are at least two |
* of at the offset. Used together with TERMP_NOBREAK for the tags |
* space characters of padding. Otherwise, rather break the line. |
* in various kinds of tagged lists. |
* |
* - TERMP_DANGLE: Do not break the output line at the right margin, |
* - TERMP_DANGLE: don't newline when TERMP_NOBREAK is specified and |
* append the next chunk after it even if this one is too long. |
* the line is overrun, and don't pad-right if it's underrun. |
* To be used together with TERMP_NOBREAK. |
* |
* - TERMP_HANG: Like TERMP_DANGLE, and also suppress padding before |
* - TERMP_HANG: like TERMP_DANGLE, but doesn't newline when |
* the next chunk if this column is not full. |
* overruning, instead save the position and continue at that point |
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* when the next invocation. |
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* |
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* In-line line breaking: |
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* |
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* If TERMP_NOBREAK is specified and the line overruns the right |
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* margin, it will break and pad-right to the right margin after |
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* writing. If maxrmargin is violated, it will break and continue |
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* writing from the right-margin, which will lead to the above scenario |
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* upon exit. Otherwise, the line will break at the right margin. |
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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 */ |
int j; /* temporary loop index */ |
size_t dv; /* temporary for visual pos calculations */ |
int jhy; /* last hyphen before line overflow */ |
size_t j; /* temporary loop index for p->buf */ |
size_t maxvis, mmax; |
size_t jhy; /* last hyph before overflow w/r/t j */ |
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size_t maxvis; /* output position of visible boundary */ |
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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. |
*/ |
*/ |
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dv = p->rmargin > p->offset ? p->rmargin - p->offset : 0; |
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maxvis = (int)dv > p->overstep ? dv - (size_t)p->overstep : 0; |
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assert(p->offset < p->rmargin); |
if (p->flags & TERMP_NOBREAK) { |
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dv = p->maxrmargin > p->offset ? |
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p->maxrmargin - p->offset : 0; |
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bp = (int)dv > p->overstep ? |
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dv - (size_t)p->overstep : 0; |
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} else |
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bp = maxvis; |
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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; |
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/* |
/* |
* Indent the first line of a paragraph. |
* Calculate the required amount of padding. |
*/ |
*/ |
vbl = p->flags & TERMP_NOLPAD ? 0 : p->offset; |
vbl = p->offset + p->overstep > p->viscol ? |
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p->offset + p->overstep - p->viscol : 0; |
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/* |
vis = vend = 0; |
* FIXME: if bp is zero, we still output the first word before |
i = 0; |
* breaking the line. |
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*/ |
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vis = vend = i = 0; |
while (i < p->col) { |
while (i < (int)p->col) { |
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/* |
/* |
* Handle literal tab characters. |
* Handle literal tab characters: collapse all |
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* subsequent tabs into a single huge set of spaces. |
*/ |
*/ |
for (j = i; j < (int)p->col; j++) { |
ntab = 0; |
if ('\t' != p->buf[j]) |
while (i < p->col && '\t' == p->buf[i]) { |
break; |
vend = (vis / p->tabwidth + 1) * p->tabwidth; |
vend = (vis/p->tabwidth+1)*p->tabwidth; |
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vbl += vend - vis; |
vbl += vend - vis; |
vis = vend; |
vis = vend; |
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ntab++; |
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i++; |
} |
} |
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/* |
/* |
Line 426 term_flushln(struct termp *p) |
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Line 154 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++) { |
if (' ' == p->buf[j] || '\t' == p->buf[j]) |
if ((j && ' ' == p->buf[j]) || '\t' == p->buf[j]) |
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break; |
break; |
if (8 != p->buf[j]) { |
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if (vend > vis && vend < bp && |
/* Back over the the last printed character. */ |
ASCII_HYPH == p->buf[j]) |
if (8 == p->buf[j]) { |
jhy = j; |
assert(j); |
vend++; |
vend -= (*p->width)(p, p->buf[j - 1]); |
} else |
continue; |
vend--; |
} |
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/* Regular word. */ |
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/* Break at the hyphen point if we overrun. */ |
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if (vend > vis && vend < bp && |
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(ASCII_HYPH == p->buf[j] || |
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ASCII_BREAK == p->buf[j])) |
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jhy = j; |
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/* |
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* Hyphenation now decided, put back a real |
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* hyphen such that we get the correct width. |
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*/ |
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if (ASCII_HYPH == p->buf[j]) |
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p->buf[j] = '-'; |
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vend += (*p->width)(p, p->buf[j]); |
} |
} |
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/* |
/* |
Line 445 term_flushln(struct termp *p) |
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Line 188 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; |
endline(p); |
(*p->endline)(p); |
if (TERMP_NOBREAK & p->flags) { |
p->viscol = 0; |
p->viscol = p->rmargin; |
if (TERMP_BRIND & p->flags) { |
advance(p, p->rmargin); |
vbl = p->rmargin; |
vend += p->rmargin - p->offset; |
vend += p->rmargin; |
} else { |
vend -= p->offset; |
p->viscol = 0; |
} else |
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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bp += (int)/* LINTED */ |
if (0 < ntab) |
p->overstep; |
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; |
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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|
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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++; |
while (i < p->col && ' ' == p->buf[i]) |
i++; |
i++; |
} |
dv = (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]) { |
vbl++; |
vbl += (*p->width)(p, ' '); |
continue; |
continue; |
} |
} |
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if (ASCII_BREAK == p->buf[i]) |
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continue; |
|
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/* |
/* |
* Now we definitely know there will be |
* Now we definitely know there will be |
Line 492 term_flushln(struct termp *p) |
|
Line 240 term_flushln(struct termp *p) |
|
* so write preceding white space now. |
* so write preceding white space now. |
*/ |
*/ |
if (vbl) { |
if (vbl) { |
advance(p, vbl); |
(*p->advance)(p, vbl); |
p->viscol += vbl; |
p->viscol += vbl; |
vbl = 0; |
vbl = 0; |
} |
} |
|
|
if (ASCII_HYPH == p->buf[i]) |
(*p->letter)(p, p->buf[i]); |
letter(p, '-'); |
if (8 == p->buf[i]) |
|
p->viscol -= (*p->width)(p, p->buf[i-1]); |
else |
else |
letter(p, p->buf[i]); |
p->viscol += (*p->width)(p, p->buf[i]); |
|
|
p->viscol += 1; |
|
} |
} |
vend += vbl; |
|
vis = vend; |
vis = vend; |
} |
} |
|
|
|
/* |
|
* If there was trailing white space, it was not printed; |
|
* so reset the cursor position accordingly. |
|
*/ |
|
if (vis > vbl) |
|
vis -= vbl; |
|
else |
|
vis = 0; |
|
|
p->col = 0; |
p->col = 0; |
p->overstep = 0; |
p->overstep = 0; |
|
|
if ( ! (TERMP_NOBREAK & p->flags)) { |
if ( ! (TERMP_NOBREAK & p->flags)) { |
p->viscol = 0; |
p->viscol = 0; |
endline(p); |
(*p->endline)(p); |
return; |
return; |
} |
} |
|
|
if (TERMP_HANG & p->flags) { |
if (TERMP_HANG & p->flags) { |
/* We need one blank after the tag. */ |
p->overstep += (int)(p->offset + vis - p->rmargin + |
p->overstep = /* LINTED */ |
p->trailspace * (*p->width)(p, ' ')); |
vis - maxvis + 1; |
|
|
|
/* |
/* |
* Behave exactly the same way as groff: |
|
* 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 |
|
* to be longer. |
|
*/ |
*/ |
if (p->overstep >= -1) { |
if (p->trailspace && p->overstep < 0) |
assert((int)maxvis + p->overstep >= 0); |
|
/* LINTED */ |
|
maxvis += p->overstep; |
|
} else |
|
p->overstep = 0; |
p->overstep = 0; |
|
return; |
|
|
} else if (TERMP_DANGLE & p->flags) |
} else if (TERMP_DANGLE & p->flags) |
return; |
return; |
|
|
/* Right-pad. */ |
/* If the column was overrun, break the line. */ |
if (maxvis > vis + /* LINTED */ |
if (maxvis < vis + p->trailspace * (*p->width)(p, ' ')) { |
((TERMP_TWOSPACE & p->flags) ? 1 : 0)) { |
(*p->endline)(p); |
p->viscol += maxvis - vis; |
p->viscol = 0; |
advance(p, maxvis - vis); |
|
vis += (maxvis - vis); |
|
} else { /* ...or newline break. */ |
|
endline(p); |
|
p->viscol = p->rmargin; |
|
advance(p, p->rmargin); |
|
} |
} |
} |
} |
|
|
|
/* |
/* |
|
* A newline only breaks an existing line; it won't assert vertical |
* 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 |
* space. All data in the output buffer is flushed prior to the newline |
* assertion. |
* assertion. |
Line 566 term_newln(struct termp *p) |
|
Line 307 term_newln(struct termp *p) |
|
{ |
{ |
|
|
p->flags |= TERMP_NOSPACE; |
p->flags |= TERMP_NOSPACE; |
if (0 == p->col && 0 == p->viscol) { |
if (p->col || p->viscol) |
p->flags &= ~TERMP_NOLPAD; |
term_flushln(p); |
return; |
|
} |
|
term_flushln(p); |
|
p->flags &= ~TERMP_NOLPAD; |
|
} |
} |
|
|
|
|
/* |
/* |
* Asserts a vertical space (a full, empty line-break between lines). |
* 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. |
* Note that if used twice, this will cause two blank spaces and so on. |
Line 587 term_vspace(struct termp *p) |
|
Line 323 term_vspace(struct termp *p) |
|
|
|
term_newln(p); |
term_newln(p); |
p->viscol = 0; |
p->viscol = 0; |
endline(p); |
if (0 < p->skipvsp) |
|
p->skipvsp--; |
|
else |
|
(*p->endline)(p); |
} |
} |
|
|
|
/* Swap current and previous font; for \fP and .ft P */ |
static void |
|
spec(struct termp *p, const char *word, size_t len) |
|
{ |
|
const char *rhs; |
|
size_t sz; |
|
|
|
rhs = chars_a2ascii(p->symtab, word, len, &sz); |
|
if (rhs) |
|
encode(p, rhs, sz); |
|
} |
|
|
|
|
|
static void |
|
res(struct termp *p, const char *word, size_t len) |
|
{ |
|
const char *rhs; |
|
size_t sz; |
|
|
|
rhs = chars_a2res(p->symtab, word, len, &sz); |
|
if (rhs) |
|
encode(p, rhs, sz); |
|
} |
|
|
|
|
|
void |
void |
term_fontlast(struct termp *p) |
term_fontlast(struct termp *p) |
{ |
{ |
Line 625 term_fontlast(struct termp *p) |
|
Line 340 term_fontlast(struct termp *p) |
|
p->fontq[p->fonti] = f; |
p->fontq[p->fonti] = f; |
} |
} |
|
|
|
/* Set font, save current, discard previous; for \f, .ft, .B etc. */ |
void |
void |
term_fontrepl(struct termp *p, enum termfont f) |
term_fontrepl(struct termp *p, enum termfont f) |
{ |
{ |
Line 634 term_fontrepl(struct termp *p, enum termfont f) |
|
Line 349 term_fontrepl(struct termp *p, enum termfont f) |
|
p->fontq[p->fonti] = f; |
p->fontq[p->fonti] = f; |
} |
} |
|
|
|
/* Set font, save previous. */ |
void |
void |
term_fontpush(struct termp *p, enum termfont f) |
term_fontpush(struct termp *p, enum termfont f) |
{ |
{ |
|
|
assert(p->fonti + 1 < 10); |
|
p->fontl = p->fontq[p->fonti]; |
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 |
void |
term_fontpopq(struct termp *p, const void *key) |
term_fontpopq(struct termp *p, int i) |
{ |
{ |
|
|
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; |
} |
} |
|
|
|
/* Pop one font off the stack. */ |
void |
void |
term_fontpop(struct termp *p) |
term_fontpop(struct termp *p) |
{ |
{ |
Line 679 term_fontpop(struct termp *p) |
|
Line 382 term_fontpop(struct termp *p) |
|
p->fonti--; |
p->fonti--; |
} |
} |
|
|
|
|
/* |
/* |
* 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 688 term_fontpop(struct termp *p) |
|
Line 390 term_fontpop(struct termp *p) |
|
void |
void |
term_word(struct termp *p, const char *word) |
term_word(struct termp *p, const char *word) |
{ |
{ |
const char *sv, *seq; |
const char nbrsp[2] = { ASCII_NBRSP, 0 }; |
int sz; |
const char *seq, *cp; |
|
int sz, uc; |
size_t ssz; |
size_t ssz; |
enum roffdeco deco; |
enum mandoc_esc esc; |
|
|
sv = word; |
|
|
|
if (word[0] && '\0' == word[1]) |
|
switch (word[0]) { |
|
case('.'): |
|
/* FALLTHROUGH */ |
|
case(','): |
|
/* FALLTHROUGH */ |
|
case(';'): |
|
/* FALLTHROUGH */ |
|
case(':'): |
|
/* FALLTHROUGH */ |
|
case('?'): |
|
/* FALLTHROUGH */ |
|
case('!'): |
|
/* FALLTHROUGH */ |
|
case(')'): |
|
/* FALLTHROUGH */ |
|
case(']'): |
|
if ( ! (TERMP_IGNDELIM & p->flags)) |
|
p->flags |= TERMP_NOSPACE; |
|
break; |
|
default: |
|
break; |
|
} |
|
|
|
if ( ! (TERMP_NOSPACE & p->flags)) { |
if ( ! (TERMP_NOSPACE & p->flags)) { |
bufferc(p, ' '); |
if ( ! (TERMP_KEEP & p->flags)) { |
if (TERMP_SENTENCE & p->flags) |
|
bufferc(p, ' '); |
bufferc(p, ' '); |
|
if (TERMP_SENTENCE & p->flags) |
|
bufferc(p, ' '); |
|
} else |
|
bufferc(p, ASCII_NBRSP); |
} |
} |
|
if (TERMP_PREKEEP & p->flags) |
|
p->flags |= TERMP_KEEP; |
|
|
if ( ! (p->flags & TERMP_NONOSPACE)) |
if ( ! (p->flags & TERMP_NONOSPACE)) |
p->flags &= ~TERMP_NOSPACE; |
p->flags &= ~TERMP_NOSPACE; |
|
else |
|
p->flags |= TERMP_NOSPACE; |
|
|
p->flags &= ~TERMP_SENTENCE; |
p->flags &= ~(TERMP_SENTENCE | TERMP_NONEWLINE); |
|
|
/* FIXME: use strcspn. */ |
while ('\0' != *word) { |
|
|
while (*word) { |
|
if ('\\' != *word) { |
if ('\\' != *word) { |
encode(p, word, 1); |
if (TERMP_SKIPCHAR & p->flags) { |
word++; |
p->flags &= ~TERMP_SKIPCHAR; |
|
word++; |
|
continue; |
|
} |
|
if (TERMP_NBRWORD & p->flags) { |
|
if (' ' == *word) { |
|
encode(p, nbrsp, 1); |
|
word++; |
|
continue; |
|
} |
|
ssz = strcspn(word, "\\ "); |
|
} else |
|
ssz = strcspn(word, "\\"); |
|
encode(p, word, ssz); |
|
word += (int)ssz; |
continue; |
continue; |
} |
} |
|
|
seq = ++word; |
word++; |
sz = a2roffdeco(&deco, &seq, &ssz); |
esc = mandoc_escape(&word, &seq, &sz); |
|
if (ESCAPE_ERROR == esc) |
|
continue; |
|
|
switch (deco) { |
switch (esc) { |
case (DECO_RESERVED): |
case ESCAPE_UNICODE: |
res(p, seq, ssz); |
uc = mchars_num2uc(seq + 1, sz - 1); |
break; |
break; |
case (DECO_SPECIAL): |
case ESCAPE_NUMBERED: |
spec(p, seq, ssz); |
uc = mchars_num2char(seq, sz); |
|
if (uc < 0) |
|
continue; |
break; |
break; |
case (DECO_BOLD): |
case ESCAPE_SPECIAL: |
|
if (p->enc == TERMENC_ASCII) { |
|
cp = mchars_spec2str(p->symtab, |
|
seq, sz, &ssz); |
|
if (cp != NULL) |
|
encode(p, cp, ssz); |
|
} else { |
|
uc = mchars_spec2cp(p->symtab, seq, sz); |
|
if (uc > 0) |
|
encode1(p, uc); |
|
} |
|
continue; |
|
case ESCAPE_FONTBOLD: |
term_fontrepl(p, TERMFONT_BOLD); |
term_fontrepl(p, TERMFONT_BOLD); |
break; |
continue; |
case (DECO_ITALIC): |
case ESCAPE_FONTITALIC: |
term_fontrepl(p, TERMFONT_UNDER); |
term_fontrepl(p, TERMFONT_UNDER); |
break; |
continue; |
case (DECO_ROMAN): |
case ESCAPE_FONTBI: |
|
term_fontrepl(p, TERMFONT_BI); |
|
continue; |
|
case ESCAPE_FONT: |
|
/* FALLTHROUGH */ |
|
case ESCAPE_FONTROMAN: |
term_fontrepl(p, TERMFONT_NONE); |
term_fontrepl(p, TERMFONT_NONE); |
break; |
continue; |
case (DECO_PREVIOUS): |
case ESCAPE_FONTPREV: |
term_fontlast(p); |
term_fontlast(p); |
break; |
continue; |
|
case ESCAPE_NOSPACE: |
|
if (TERMP_SKIPCHAR & p->flags) |
|
p->flags &= ~TERMP_SKIPCHAR; |
|
else if ('\0' == *word) |
|
p->flags |= (TERMP_NOSPACE | TERMP_NONEWLINE); |
|
continue; |
|
case ESCAPE_SKIPCHAR: |
|
p->flags |= TERMP_SKIPCHAR; |
|
continue; |
|
case ESCAPE_OVERSTRIKE: |
|
cp = seq + sz; |
|
while (seq < cp) { |
|
if (*seq == '\\') { |
|
mandoc_escape(&seq, NULL, NULL); |
|
continue; |
|
} |
|
encode1(p, *seq++); |
|
if (seq < cp) |
|
encode(p, "\b", 1); |
|
} |
default: |
default: |
break; |
continue; |
} |
} |
|
|
word += sz; |
/* |
if (DECO_NOSPACE == deco && '\0' == *word) |
* Common handling for Unicode and numbered |
p->flags |= TERMP_NOSPACE; |
* character escape sequences. |
} |
*/ |
|
|
/* |
if (p->enc == TERMENC_ASCII) { |
* Note that we don't process the pipe: the parser sees it as |
cp = ascii_uc2str(uc); |
* punctuation, but we don't in terms of typography. |
encode(p, cp, strlen(cp)); |
*/ |
} else { |
if (sv[0] && 0 == sv[1]) |
if ((uc < 0x20 && uc != 0x09) || |
switch (sv[0]) { |
(uc > 0x7E && uc < 0xA0)) |
case('('): |
uc = 0xFFFD; |
/* FALLTHROUGH */ |
encode1(p, uc); |
case('['): |
|
p->flags |= TERMP_NOSPACE; |
|
break; |
|
default: |
|
break; |
|
} |
} |
|
} |
|
p->flags &= ~TERMP_NBRWORD; |
} |
} |
|
|
|
|
static void |
static void |
adjbuf(struct termp *p, size_t sz) |
adjbuf(struct termp *p, size_t sz) |
{ |
{ |
Line 796 adjbuf(struct termp *p, size_t sz) |
|
Line 529 adjbuf(struct termp *p, size_t sz) |
|
while (sz >= p->maxcols) |
while (sz >= p->maxcols) |
p->maxcols <<= 2; |
p->maxcols <<= 2; |
|
|
p->buf = realloc(p->buf, p->maxcols); |
p->buf = mandoc_reallocarray(p->buf, p->maxcols, sizeof(int)); |
if (NULL == p->buf) { |
|
perror(NULL); |
|
exit(EXIT_FAILURE); |
|
} |
|
} |
} |
|
|
|
|
static void |
static void |
buffera(struct termp *p, const char *word, size_t sz) |
bufferc(struct termp *p, char c) |
{ |
{ |
|
|
if (p->col + sz >= p->maxcols) |
if (p->col + 1 >= p->maxcols) |
adjbuf(p, p->col + sz); |
adjbuf(p, p->col + 1); |
|
|
memcpy(&p->buf[(int)p->col], word, sz); |
p->buf[p->col++] = c; |
p->col += sz; |
|
} |
} |
|
|
|
/* |
|
* See encode(). |
|
* Do this for a single (probably unicode) value. |
|
* Does not check for non-decorated glyphs. |
|
*/ |
static void |
static void |
bufferc(struct termp *p, char c) |
encode1(struct termp *p, int c) |
{ |
{ |
|
enum termfont f; |
|
|
if (p->col + 1 >= p->maxcols) |
if (TERMP_SKIPCHAR & p->flags) { |
adjbuf(p, p->col + 1); |
p->flags &= ~TERMP_SKIPCHAR; |
|
return; |
|
} |
|
|
p->buf[(int)p->col++] = c; |
if (p->col + 6 >= p->maxcols) |
} |
adjbuf(p, p->col + 6); |
|
|
|
f = p->fontq[p->fonti]; |
|
|
|
if (TERMFONT_UNDER == f || TERMFONT_BI == f) { |
|
p->buf[p->col++] = '_'; |
|
p->buf[p->col++] = 8; |
|
} |
|
if (TERMFONT_BOLD == f || TERMFONT_BI == f) { |
|
if (ASCII_HYPH == c) |
|
p->buf[p->col++] = '-'; |
|
else |
|
p->buf[p->col++] = c; |
|
p->buf[p->col++] = 8; |
|
} |
|
p->buf[p->col++] = c; |
|
} |
|
|
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; |
|
|
|
|
if (TERMP_SKIPCHAR & p->flags) { |
|
p->flags &= ~TERMP_SKIPCHAR; |
|
return; |
|
} |
|
|
/* |
/* |
* 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 |
* character by character. |
* character by character. |
*/ |
*/ |
|
|
if (TERMTYPE_PS == p->type) { |
if (p->fontq[p->fonti] == TERMFONT_NONE) { |
buffera(p, word, sz); |
if (p->col + sz >= p->maxcols) |
|
adjbuf(p, p->col + sz); |
|
for (i = 0; i < sz; i++) |
|
p->buf[p->col++] = word[i]; |
return; |
return; |
} else if (TERMFONT_NONE == (f = term_fonttop(p))) { |
|
buffera(p, word, sz); |
|
return; |
|
} |
} |
|
|
for (i = 0; i < (int)sz; i++) { |
/* Pre-buffer, assuming worst-case. */ |
if ( ! isgraph((u_char)word[i])) { |
|
bufferc(p, word[i]); |
|
continue; |
|
} |
|
|
|
if (TERMFONT_UNDER == f) |
if (p->col + 1 + (sz * 5) >= p->maxcols) |
bufferc(p, '_'); |
adjbuf(p, p->col + 1 + (sz * 5)); |
|
|
|
for (i = 0; i < sz; i++) { |
|
if (ASCII_HYPH == word[i] || |
|
isgraph((unsigned char)word[i])) |
|
encode1(p, word[i]); |
else |
else |
bufferc(p, word[i]); |
p->buf[p->col++] = word[i]; |
|
} |
|
} |
|
|
bufferc(p, 8); |
void |
bufferc(p, word[i]); |
term_setwidth(struct termp *p, const char *wstr) |
|
{ |
|
struct roffsu su; |
|
size_t width; |
|
int iop; |
|
|
|
iop = 0; |
|
width = 0; |
|
if (NULL != wstr) { |
|
switch (*wstr) { |
|
case '+': |
|
iop = 1; |
|
wstr++; |
|
break; |
|
case '-': |
|
iop = -1; |
|
wstr++; |
|
break; |
|
default: |
|
break; |
|
} |
|
if (a2roffsu(wstr, &su, SCALE_MAX)) |
|
width = term_hspan(p, &su); |
|
else |
|
iop = 0; |
} |
} |
|
(*p->setwidth)(p, iop, width); |
} |
} |
|
|
|
size_t |
|
term_len(const struct termp *p, size_t sz) |
|
{ |
|
|
|
return((*p->width)(p, ' ') * sz); |
|
} |
|
|
|
static size_t |
|
cond_width(const struct termp *p, int c, int *skip) |
|
{ |
|
|
|
if (*skip) { |
|
(*skip) = 0; |
|
return(0); |
|
} else |
|
return((*p->width)(p, c)); |
|
} |
|
|
size_t |
size_t |
term_vspan(const struct roffsu *su) |
term_strlen(const struct termp *p, const char *cp) |
{ |
{ |
double r; |
size_t sz, rsz, i; |
|
int ssz, skip, uc; |
|
const char *seq, *rhs; |
|
enum mandoc_esc esc; |
|
static const char rej[] = { '\\', ASCII_NBRSP, ASCII_HYPH, |
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ASCII_BREAK, '\0' }; |
|
|
switch (su->unit) { |
/* |
case (SCALE_CM): |
* Account for escaped sequences within string length |
r = su->scale * 2; |
* calculations. This follows the logic in term_word() as we |
break; |
* must calculate the width of produced strings. |
case (SCALE_IN): |
*/ |
r = su->scale * 6; |
|
break; |
sz = 0; |
case (SCALE_PC): |
skip = 0; |
r = su->scale; |
while ('\0' != *cp) { |
break; |
rsz = strcspn(cp, rej); |
case (SCALE_PT): |
for (i = 0; i < rsz; i++) |
r = su->scale / 8; |
sz += cond_width(p, *cp++, &skip); |
break; |
|
case (SCALE_MM): |
switch (*cp) { |
r = su->scale / 1000; |
case '\\': |
break; |
cp++; |
case (SCALE_VS): |
esc = mandoc_escape(&cp, &seq, &ssz); |
r = su->scale; |
if (ESCAPE_ERROR == esc) |
break; |
continue; |
default: |
|
r = su->scale - 1; |
rhs = NULL; |
break; |
|
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switch (esc) { |
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case ESCAPE_UNICODE: |
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uc = mchars_num2uc(seq + 1, ssz - 1); |
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break; |
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case ESCAPE_NUMBERED: |
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uc = mchars_num2char(seq, ssz); |
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if (uc < 0) |
|
continue; |
|
break; |
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case ESCAPE_SPECIAL: |
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if (p->enc == TERMENC_ASCII) { |
|
rhs = mchars_spec2str(p->symtab, |
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seq, ssz, &rsz); |
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if (rhs != NULL) |
|
break; |
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} else { |
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uc = mchars_spec2cp(p->symtab, |
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seq, ssz); |
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if (uc > 0) |
|
sz += cond_width(p, uc, &skip); |
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} |
|
continue; |
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case ESCAPE_SKIPCHAR: |
|
skip = 1; |
|
continue; |
|
case ESCAPE_OVERSTRIKE: |
|
rsz = 0; |
|
rhs = seq + ssz; |
|
while (seq < rhs) { |
|
if (*seq == '\\') { |
|
mandoc_escape(&seq, NULL, NULL); |
|
continue; |
|
} |
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i = (*p->width)(p, *seq++); |
|
if (rsz < i) |
|
rsz = i; |
|
} |
|
sz += rsz; |
|
continue; |
|
default: |
|
continue; |
|
} |
|
|
|
/* |
|
* 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: |
|
sz += cond_width(p, ' ', &skip); |
|
cp++; |
|
break; |
|
case ASCII_HYPH: |
|
sz += cond_width(p, '-', &skip); |
|
cp++; |
|
/* FALLTHROUGH */ |
|
case ASCII_BREAK: |
|
break; |
|
default: |
|
break; |
|
} |
} |
} |
|
|
if (r < 0.0) |
return(sz); |
r = 0.0; |
|
return(/* LINTED */(size_t) |
|
r); |
|
} |
} |
|
|
|
int |
size_t |
term_vspan(const struct termp *p, const struct roffsu *su) |
term_hspan(const struct roffsu *su) |
|
{ |
{ |
double r; |
double r; |
|
int ri; |
|
|
/* XXX: CM, IN, and PT are approximations. */ |
|
|
|
switch (su->unit) { |
switch (su->unit) { |
case (SCALE_CM): |
case SCALE_BU: |
r = 4 * su->scale; |
r = su->scale / 40.0; |
break; |
break; |
case (SCALE_IN): |
case SCALE_CM: |
/* XXX: this is an approximation. */ |
r = su->scale * 6.0 / 2.54; |
r = 10 * su->scale; |
|
break; |
break; |
case (SCALE_PC): |
case SCALE_FS: |
r = (10 * su->scale) / 6; |
r = su->scale * 65536.0 / 40.0; |
break; |
break; |
case (SCALE_PT): |
case SCALE_IN: |
r = (10 * su->scale) / 72; |
r = su->scale * 6.0; |
break; |
break; |
case (SCALE_MM): |
case SCALE_MM: |
r = su->scale / 1000; /* FIXME: double-check. */ |
r = su->scale * 0.006; |
break; |
break; |
case (SCALE_VS): |
case SCALE_PC: |
r = su->scale * 2 - 1; /* FIXME: double-check. */ |
r = su->scale; |
break; |
break; |
default: |
case SCALE_PT: |
|
r = su->scale / 12.0; |
|
break; |
|
case SCALE_EN: |
|
/* FALLTHROUGH */ |
|
case SCALE_EM: |
|
r = su->scale * 0.6; |
|
break; |
|
case SCALE_VS: |
r = su->scale; |
r = su->scale; |
break; |
break; |
|
default: |
|
abort(); |
|
/* NOTREACHED */ |
} |
} |
|
ri = r > 0.0 ? r + 0.4995 : r - 0.4995; |
if (r < 0.0) |
return(ri < 66 ? ri : 1); |
r = 0.0; |
|
return((size_t)/* LINTED */ |
|
r); |
|
} |
} |
|
|
|
int |
|
term_hspan(const struct termp *p, const struct roffsu *su) |
|
{ |
|
double v; |
|
|
|
v = (*p->hspan)(p, su); |
|
return(v > 0.0 ? v + 0.0005 : v - 0.0005); |
|
} |