/* $Id$ */
/*
* Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
* Copyright (c) 2014 Ingo Schwarze <schwarze@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <sys/types.h>
#ifdef USE_WCHAR
# include <locale.h>
#endif
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#ifdef USE_WCHAR
# include <wchar.h>
#endif
#include "mandoc.h"
#include "mandoc_aux.h"
#include "out.h"
#include "term.h"
#include "main.h"
/*
* Sadly, this doesn't seem to be defined on systems even when they
* support it. For the time being, remove it and let those compiling
* the software decide for themselves what to use.
*/
#if 0
#if ! defined(__STDC_ISO_10646__)
# undef USE_WCHAR
#endif
#endif
static struct termp *ascii_init(enum termenc, char *);
static double ascii_hspan(const struct termp *,
const struct roffsu *);
static size_t ascii_width(const struct termp *, int);
static void ascii_advance(struct termp *, size_t);
static void ascii_begin(struct termp *);
static void ascii_end(struct termp *);
static void ascii_endline(struct termp *);
static void ascii_letter(struct termp *, int);
static void ascii_setwidth(struct termp *, int, size_t);
#ifdef USE_WCHAR
static void locale_advance(struct termp *, size_t);
static void locale_endline(struct termp *);
static void locale_letter(struct termp *, int);
static size_t locale_width(const struct termp *, int);
#endif
static struct termp *
ascii_init(enum termenc enc, char *outopts)
{
const char *toks[4];
char *v;
struct termp *p;
p = mandoc_calloc(1, sizeof(struct termp));
p->tabwidth = 5;
p->defrmargin = p->lastrmargin = 78;
p->begin = ascii_begin;
p->end = ascii_end;
p->hspan = ascii_hspan;
p->type = TERMTYPE_CHAR;
p->enc = TERMENC_ASCII;
p->advance = ascii_advance;
p->endline = ascii_endline;
p->letter = ascii_letter;
p->setwidth = ascii_setwidth;
p->width = ascii_width;
#ifdef USE_WCHAR
if (TERMENC_ASCII != enc) {
v = TERMENC_LOCALE == enc ?
setlocale(LC_ALL, "") :
setlocale(LC_CTYPE, "en_US.UTF-8");
if (NULL != v && MB_CUR_MAX > 1) {
p->enc = enc;
p->advance = locale_advance;
p->endline = locale_endline;
p->letter = locale_letter;
p->width = locale_width;
}
}
#endif
toks[0] = "indent";
toks[1] = "width";
toks[2] = "mdoc";
toks[3] = NULL;
while (outopts && *outopts)
switch (getsubopt(&outopts, UNCONST(toks), &v)) {
case 0:
p->defindent = (size_t)atoi(v);
break;
case 1:
p->defrmargin = (size_t)atoi(v);
break;
case 2:
/*
* Temporary, undocumented mode
* to imitate mdoc(7) output style.
*/
p->mdocstyle = 1;
p->defindent = 5;
break;
default:
break;
}
/* Enforce a lower boundary. */
if (p->defrmargin < 58)
p->defrmargin = 58;
return(p);
}
void *
ascii_alloc(char *outopts)
{
return(ascii_init(TERMENC_ASCII, outopts));
}
void *
utf8_alloc(char *outopts)
{
return(ascii_init(TERMENC_UTF8, outopts));
}
void *
locale_alloc(char *outopts)
{
return(ascii_init(TERMENC_LOCALE, outopts));
}
static void
ascii_setwidth(struct termp *p, int iop, size_t width)
{
p->rmargin = p->defrmargin;
if (0 < iop)
p->defrmargin += width;
else if (0 > iop)
p->defrmargin -= width;
else
p->defrmargin = width ? width : p->lastrmargin;
p->lastrmargin = p->rmargin;
p->rmargin = p->maxrmargin = p->defrmargin;
}
static size_t
ascii_width(const struct termp *p, int c)
{
return(1);
}
void
ascii_free(void *arg)
{
term_free((struct termp *)arg);
}
static void
ascii_letter(struct termp *p, int c)
{
putchar(c);
}
static void
ascii_begin(struct termp *p)
{
(*p->headf)(p, p->argf);
}
static void
ascii_end(struct termp *p)
{
(*p->footf)(p, p->argf);
}
static void
ascii_endline(struct termp *p)
{
putchar('\n');
}
static void
ascii_advance(struct termp *p, size_t len)
{
size_t i;
for (i = 0; i < len; i++)
putchar(' ');
}
static double
ascii_hspan(const struct termp *p, const struct roffsu *su)
{
double r;
/*
* Approximate based on character width. These are generated
* entirely by eyeballing the screen, but appear to be correct.
*/
switch (su->unit) {
case SCALE_CM:
r = su->scale * 4.0;
break;
case SCALE_IN:
r = su->scale * 10.0;
break;
case SCALE_PC:
r = (su->scale * 10.0) / 6.0;
break;
case SCALE_PT:
r = (su->scale * 10.0) / 72.0;
break;
case SCALE_MM:
r = su->scale / 1000.0;
break;
case SCALE_VS:
r = su->scale * 2.0 - 1.0;
break;
default:
r = su->scale;
break;
}
return(r);
}
#ifdef USE_WCHAR
static size_t
locale_width(const struct termp *p, int c)
{
int rc;
if (c == ASCII_NBRSP)
c = ' ';
rc = wcwidth(c);
if (rc < 0)
rc = 0;
return(rc);
}
static void
locale_advance(struct termp *p, size_t len)
{
size_t i;
for (i = 0; i < len; i++)
putwchar(L' ');
}
static void
locale_endline(struct termp *p)
{
putwchar(L'\n');
}
static void
locale_letter(struct termp *p, int c)
{
putwchar(c);
}
#endif
