freebsd-dev/contrib/mdocml/man_term.c
2016-01-15 23:28:12 +00:00

1178 lines
23 KiB
C

/* $Id: man_term.c,v 1.187 2016/01/08 17:48:09 schwarze Exp $ */
/*
* Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
* Copyright (c) 2010-2015 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 AUTHORS DISCLAIM ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS 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.
*/
#include "config.h"
#include <sys/types.h>
#include <assert.h>
#include <ctype.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mandoc_aux.h"
#include "mandoc.h"
#include "roff.h"
#include "man.h"
#include "out.h"
#include "term.h"
#include "main.h"
#define MAXMARGINS 64 /* maximum number of indented scopes */
struct mtermp {
int fl;
#define MANT_LITERAL (1 << 0)
int lmargin[MAXMARGINS]; /* margins (incl. vis. page) */
int lmargincur; /* index of current margin */
int lmarginsz; /* actual number of nested margins */
size_t offset; /* default offset to visible page */
int pardist; /* vert. space before par., unit: [v] */
};
#define DECL_ARGS struct termp *p, \
struct mtermp *mt, \
struct roff_node *n, \
const struct roff_meta *meta
struct termact {
int (*pre)(DECL_ARGS);
void (*post)(DECL_ARGS);
int flags;
#define MAN_NOTEXT (1 << 0) /* Never has text children. */
};
static void print_man_nodelist(DECL_ARGS);
static void print_man_node(DECL_ARGS);
static void print_man_head(struct termp *,
const struct roff_meta *);
static void print_man_foot(struct termp *,
const struct roff_meta *);
static void print_bvspace(struct termp *,
const struct roff_node *, int);
static int pre_B(DECL_ARGS);
static int pre_HP(DECL_ARGS);
static int pre_I(DECL_ARGS);
static int pre_IP(DECL_ARGS);
static int pre_OP(DECL_ARGS);
static int pre_PD(DECL_ARGS);
static int pre_PP(DECL_ARGS);
static int pre_RS(DECL_ARGS);
static int pre_SH(DECL_ARGS);
static int pre_SS(DECL_ARGS);
static int pre_TP(DECL_ARGS);
static int pre_UR(DECL_ARGS);
static int pre_alternate(DECL_ARGS);
static int pre_ft(DECL_ARGS);
static int pre_ign(DECL_ARGS);
static int pre_in(DECL_ARGS);
static int pre_literal(DECL_ARGS);
static int pre_ll(DECL_ARGS);
static int pre_sp(DECL_ARGS);
static void post_IP(DECL_ARGS);
static void post_HP(DECL_ARGS);
static void post_RS(DECL_ARGS);
static void post_SH(DECL_ARGS);
static void post_SS(DECL_ARGS);
static void post_TP(DECL_ARGS);
static void post_UR(DECL_ARGS);
static const struct termact termacts[MAN_MAX] = {
{ pre_sp, NULL, MAN_NOTEXT }, /* br */
{ NULL, NULL, 0 }, /* TH */
{ pre_SH, post_SH, 0 }, /* SH */
{ pre_SS, post_SS, 0 }, /* SS */
{ pre_TP, post_TP, 0 }, /* TP */
{ pre_PP, NULL, 0 }, /* LP */
{ pre_PP, NULL, 0 }, /* PP */
{ pre_PP, NULL, 0 }, /* P */
{ pre_IP, post_IP, 0 }, /* IP */
{ pre_HP, post_HP, 0 }, /* HP */
{ NULL, NULL, 0 }, /* SM */
{ pre_B, NULL, 0 }, /* SB */
{ pre_alternate, NULL, 0 }, /* BI */
{ pre_alternate, NULL, 0 }, /* IB */
{ pre_alternate, NULL, 0 }, /* BR */
{ pre_alternate, NULL, 0 }, /* RB */
{ NULL, NULL, 0 }, /* R */
{ pre_B, NULL, 0 }, /* B */
{ pre_I, NULL, 0 }, /* I */
{ pre_alternate, NULL, 0 }, /* IR */
{ pre_alternate, NULL, 0 }, /* RI */
{ pre_sp, NULL, MAN_NOTEXT }, /* sp */
{ pre_literal, NULL, 0 }, /* nf */
{ pre_literal, NULL, 0 }, /* fi */
{ NULL, NULL, 0 }, /* RE */
{ pre_RS, post_RS, 0 }, /* RS */
{ pre_ign, NULL, 0 }, /* DT */
{ pre_ign, NULL, MAN_NOTEXT }, /* UC */
{ pre_PD, NULL, MAN_NOTEXT }, /* PD */
{ pre_ign, NULL, 0 }, /* AT */
{ pre_in, NULL, MAN_NOTEXT }, /* in */
{ pre_ft, NULL, MAN_NOTEXT }, /* ft */
{ pre_OP, NULL, 0 }, /* OP */
{ pre_literal, NULL, 0 }, /* EX */
{ pre_literal, NULL, 0 }, /* EE */
{ pre_UR, post_UR, 0 }, /* UR */
{ NULL, NULL, 0 }, /* UE */
{ pre_ll, NULL, MAN_NOTEXT }, /* ll */
};
void
terminal_man(void *arg, const struct roff_man *man)
{
struct termp *p;
struct roff_node *n;
struct mtermp mt;
p = (struct termp *)arg;
p->overstep = 0;
p->rmargin = p->maxrmargin = p->defrmargin;
p->tabwidth = term_len(p, 5);
memset(&mt, 0, sizeof(struct mtermp));
mt.lmargin[mt.lmargincur] = term_len(p, p->defindent);
mt.offset = term_len(p, p->defindent);
mt.pardist = 1;
n = man->first->child;
if (p->synopsisonly) {
while (n != NULL) {
if (n->tok == MAN_SH &&
n->child->child->type == ROFFT_TEXT &&
!strcmp(n->child->child->string, "SYNOPSIS")) {
if (n->child->next->child != NULL)
print_man_nodelist(p, &mt,
n->child->next->child,
&man->meta);
term_newln(p);
break;
}
n = n->next;
}
} else {
if (p->defindent == 0)
p->defindent = 7;
term_begin(p, print_man_head, print_man_foot, &man->meta);
p->flags |= TERMP_NOSPACE;
if (n != NULL)
print_man_nodelist(p, &mt, n, &man->meta);
term_end(p);
}
}
/*
* Printing leading vertical space before a block.
* This is used for the paragraph macros.
* The rules are pretty simple, since there's very little nesting going
* on here. Basically, if we're the first within another block (SS/SH),
* then don't emit vertical space. If we are (RS), then do. If not the
* first, print it.
*/
static void
print_bvspace(struct termp *p, const struct roff_node *n, int pardist)
{
int i;
term_newln(p);
if (n->body && n->body->child)
if (n->body->child->type == ROFFT_TBL)
return;
if (n->parent->type == ROFFT_ROOT || n->parent->tok != MAN_RS)
if (NULL == n->prev)
return;
for (i = 0; i < pardist; i++)
term_vspace(p);
}
static int
pre_ign(DECL_ARGS)
{
return 0;
}
static int
pre_ll(DECL_ARGS)
{
term_setwidth(p, n->child != NULL ? n->child->string : NULL);
return 0;
}
static int
pre_I(DECL_ARGS)
{
term_fontrepl(p, TERMFONT_UNDER);
return 1;
}
static int
pre_literal(DECL_ARGS)
{
term_newln(p);
if (MAN_nf == n->tok || MAN_EX == n->tok)
mt->fl |= MANT_LITERAL;
else
mt->fl &= ~MANT_LITERAL;
/*
* Unlike .IP and .TP, .HP does not have a HEAD.
* So in case a second call to term_flushln() is needed,
* indentation has to be set up explicitly.
*/
if (MAN_HP == n->parent->tok && p->rmargin < p->maxrmargin) {
p->offset = p->rmargin;
p->rmargin = p->maxrmargin;
p->trailspace = 0;
p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND);
p->flags |= TERMP_NOSPACE;
}
return 0;
}
static int
pre_PD(DECL_ARGS)
{
struct roffsu su;
n = n->child;
if (n == NULL) {
mt->pardist = 1;
return 0;
}
assert(n->type == ROFFT_TEXT);
if (a2roffsu(n->string, &su, SCALE_VS))
mt->pardist = term_vspan(p, &su);
return 0;
}
static int
pre_alternate(DECL_ARGS)
{
enum termfont font[2];
struct roff_node *nn;
int savelit, i;
switch (n->tok) {
case MAN_RB:
font[0] = TERMFONT_NONE;
font[1] = TERMFONT_BOLD;
break;
case MAN_RI:
font[0] = TERMFONT_NONE;
font[1] = TERMFONT_UNDER;
break;
case MAN_BR:
font[0] = TERMFONT_BOLD;
font[1] = TERMFONT_NONE;
break;
case MAN_BI:
font[0] = TERMFONT_BOLD;
font[1] = TERMFONT_UNDER;
break;
case MAN_IR:
font[0] = TERMFONT_UNDER;
font[1] = TERMFONT_NONE;
break;
case MAN_IB:
font[0] = TERMFONT_UNDER;
font[1] = TERMFONT_BOLD;
break;
default:
abort();
}
savelit = MANT_LITERAL & mt->fl;
mt->fl &= ~MANT_LITERAL;
for (i = 0, nn = n->child; nn; nn = nn->next, i = 1 - i) {
term_fontrepl(p, font[i]);
if (savelit && NULL == nn->next)
mt->fl |= MANT_LITERAL;
assert(nn->type == ROFFT_TEXT);
term_word(p, nn->string);
if (nn->flags & MAN_EOS)
p->flags |= TERMP_SENTENCE;
if (nn->next)
p->flags |= TERMP_NOSPACE;
}
return 0;
}
static int
pre_B(DECL_ARGS)
{
term_fontrepl(p, TERMFONT_BOLD);
return 1;
}
static int
pre_OP(DECL_ARGS)
{
term_word(p, "[");
p->flags |= TERMP_NOSPACE;
if (NULL != (n = n->child)) {
term_fontrepl(p, TERMFONT_BOLD);
term_word(p, n->string);
}
if (NULL != n && NULL != n->next) {
term_fontrepl(p, TERMFONT_UNDER);
term_word(p, n->next->string);
}
term_fontrepl(p, TERMFONT_NONE);
p->flags |= TERMP_NOSPACE;
term_word(p, "]");
return 0;
}
static int
pre_ft(DECL_ARGS)
{
const char *cp;
if (NULL == n->child) {
term_fontlast(p);
return 0;
}
cp = n->child->string;
switch (*cp) {
case '4':
case '3':
case 'B':
term_fontrepl(p, TERMFONT_BOLD);
break;
case '2':
case 'I':
term_fontrepl(p, TERMFONT_UNDER);
break;
case 'P':
term_fontlast(p);
break;
case '1':
case 'C':
case 'R':
term_fontrepl(p, TERMFONT_NONE);
break;
default:
break;
}
return 0;
}
static int
pre_in(DECL_ARGS)
{
struct roffsu su;
const char *cp;
size_t v;
int less;
term_newln(p);
if (NULL == n->child) {
p->offset = mt->offset;
return 0;
}
cp = n->child->string;
less = 0;
if ('-' == *cp)
less = -1;
else if ('+' == *cp)
less = 1;
else
cp--;
if ( ! a2roffsu(++cp, &su, SCALE_EN))
return 0;
v = (term_hspan(p, &su) + 11) / 24;
if (less < 0)
p->offset -= p->offset > v ? v : p->offset;
else if (less > 0)
p->offset += v;
else
p->offset = v;
if (p->offset > SHRT_MAX)
p->offset = term_len(p, p->defindent);
return 0;
}
static int
pre_sp(DECL_ARGS)
{
struct roffsu su;
int i, len;
if ((NULL == n->prev && n->parent)) {
switch (n->parent->tok) {
case MAN_SH:
case MAN_SS:
case MAN_PP:
case MAN_LP:
case MAN_P:
return 0;
default:
break;
}
}
if (n->tok == MAN_br)
len = 0;
else if (n->child == NULL)
len = 1;
else {
if ( ! a2roffsu(n->child->string, &su, SCALE_VS))
su.scale = 1.0;
len = term_vspan(p, &su);
}
if (len == 0)
term_newln(p);
else if (len < 0)
p->skipvsp -= len;
else
for (i = 0; i < len; i++)
term_vspace(p);
/*
* Handle an explicit break request in the same way
* as an overflowing line.
*/
if (p->flags & TERMP_BRIND) {
p->offset = p->rmargin;
p->rmargin = p->maxrmargin;
p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND);
}
return 0;
}
static int
pre_HP(DECL_ARGS)
{
struct roffsu su;
const struct roff_node *nn;
int len;
switch (n->type) {
case ROFFT_BLOCK:
print_bvspace(p, n, mt->pardist);
return 1;
case ROFFT_BODY:
break;
default:
return 0;
}
if ( ! (MANT_LITERAL & mt->fl)) {
p->flags |= TERMP_NOBREAK | TERMP_BRIND;
p->trailspace = 2;
}
/* Calculate offset. */
if ((nn = n->parent->head->child) != NULL &&
a2roffsu(nn->string, &su, SCALE_EN)) {
len = term_hspan(p, &su) / 24;
if (len < 0 && (size_t)(-len) > mt->offset)
len = -mt->offset;
else if (len > SHRT_MAX)
len = term_len(p, p->defindent);
mt->lmargin[mt->lmargincur] = len;
} else
len = mt->lmargin[mt->lmargincur];
p->offset = mt->offset;
p->rmargin = mt->offset + len;
return 1;
}
static void
post_HP(DECL_ARGS)
{
switch (n->type) {
case ROFFT_BODY:
term_newln(p);
/*
* Compatibility with a groff bug.
* The .HP macro uses the undocumented .tag request
* which causes a line break and cancels no-space
* mode even if there isn't any output.
*/
if (n->child == NULL)
term_vspace(p);
p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND);
p->trailspace = 0;
p->offset = mt->offset;
p->rmargin = p->maxrmargin;
break;
default:
break;
}
}
static int
pre_PP(DECL_ARGS)
{
switch (n->type) {
case ROFFT_BLOCK:
mt->lmargin[mt->lmargincur] = term_len(p, p->defindent);
print_bvspace(p, n, mt->pardist);
break;
default:
p->offset = mt->offset;
break;
}
return n->type != ROFFT_HEAD;
}
static int
pre_IP(DECL_ARGS)
{
struct roffsu su;
const struct roff_node *nn;
int len, savelit;
switch (n->type) {
case ROFFT_BODY:
p->flags |= TERMP_NOSPACE;
break;
case ROFFT_HEAD:
p->flags |= TERMP_NOBREAK;
p->trailspace = 1;
break;
case ROFFT_BLOCK:
print_bvspace(p, n, mt->pardist);
/* FALLTHROUGH */
default:
return 1;
}
/* Calculate the offset from the optional second argument. */
if ((nn = n->parent->head->child) != NULL &&
(nn = nn->next) != NULL &&
a2roffsu(nn->string, &su, SCALE_EN)) {
len = term_hspan(p, &su) / 24;
if (len < 0 && (size_t)(-len) > mt->offset)
len = -mt->offset;
else if (len > SHRT_MAX)
len = term_len(p, p->defindent);
mt->lmargin[mt->lmargincur] = len;
} else
len = mt->lmargin[mt->lmargincur];
switch (n->type) {
case ROFFT_HEAD:
p->offset = mt->offset;
p->rmargin = mt->offset + len;
savelit = MANT_LITERAL & mt->fl;
mt->fl &= ~MANT_LITERAL;
if (n->child)
print_man_node(p, mt, n->child, meta);
if (savelit)
mt->fl |= MANT_LITERAL;
return 0;
case ROFFT_BODY:
p->offset = mt->offset + len;
p->rmargin = p->maxrmargin;
break;
default:
break;
}
return 1;
}
static void
post_IP(DECL_ARGS)
{
switch (n->type) {
case ROFFT_HEAD:
term_flushln(p);
p->flags &= ~TERMP_NOBREAK;
p->trailspace = 0;
p->rmargin = p->maxrmargin;
break;
case ROFFT_BODY:
term_newln(p);
p->offset = mt->offset;
break;
default:
break;
}
}
static int
pre_TP(DECL_ARGS)
{
struct roffsu su;
struct roff_node *nn;
int len, savelit;
switch (n->type) {
case ROFFT_HEAD:
p->flags |= TERMP_NOBREAK | TERMP_BRTRSP;
p->trailspace = 1;
break;
case ROFFT_BODY:
p->flags |= TERMP_NOSPACE;
break;
case ROFFT_BLOCK:
print_bvspace(p, n, mt->pardist);
/* FALLTHROUGH */
default:
return 1;
}
/* Calculate offset. */
if ((nn = n->parent->head->child) != NULL &&
nn->string != NULL && ! (MAN_LINE & nn->flags) &&
a2roffsu(nn->string, &su, SCALE_EN)) {
len = term_hspan(p, &su) / 24;
if (len < 0 && (size_t)(-len) > mt->offset)
len = -mt->offset;
else if (len > SHRT_MAX)
len = term_len(p, p->defindent);
mt->lmargin[mt->lmargincur] = len;
} else
len = mt->lmargin[mt->lmargincur];
switch (n->type) {
case ROFFT_HEAD:
p->offset = mt->offset;
p->rmargin = mt->offset + len;
savelit = MANT_LITERAL & mt->fl;
mt->fl &= ~MANT_LITERAL;
/* Don't print same-line elements. */
nn = n->child;
while (NULL != nn && 0 == (MAN_LINE & nn->flags))
nn = nn->next;
while (NULL != nn) {
print_man_node(p, mt, nn, meta);
nn = nn->next;
}
if (savelit)
mt->fl |= MANT_LITERAL;
return 0;
case ROFFT_BODY:
p->offset = mt->offset + len;
p->rmargin = p->maxrmargin;
p->trailspace = 0;
p->flags &= ~(TERMP_NOBREAK | TERMP_BRTRSP);
break;
default:
break;
}
return 1;
}
static void
post_TP(DECL_ARGS)
{
switch (n->type) {
case ROFFT_HEAD:
term_flushln(p);
break;
case ROFFT_BODY:
term_newln(p);
p->offset = mt->offset;
break;
default:
break;
}
}
static int
pre_SS(DECL_ARGS)
{
int i;
switch (n->type) {
case ROFFT_BLOCK:
mt->fl &= ~MANT_LITERAL;
mt->lmargin[mt->lmargincur] = term_len(p, p->defindent);
mt->offset = term_len(p, p->defindent);
/*
* No vertical space before the first subsection
* and after an empty subsection.
*/
do {
n = n->prev;
} while (n != NULL && n->tok != TOKEN_NONE &&
termacts[n->tok].flags & MAN_NOTEXT);
if (n == NULL || (n->tok == MAN_SS && n->body->child == NULL))
break;
for (i = 0; i < mt->pardist; i++)
term_vspace(p);
break;
case ROFFT_HEAD:
term_fontrepl(p, TERMFONT_BOLD);
p->offset = term_len(p, 3);
p->rmargin = mt->offset;
p->trailspace = mt->offset;
p->flags |= TERMP_NOBREAK | TERMP_BRIND;
break;
case ROFFT_BODY:
p->offset = mt->offset;
p->rmargin = p->maxrmargin;
p->trailspace = 0;
p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND);
break;
default:
break;
}
return 1;
}
static void
post_SS(DECL_ARGS)
{
switch (n->type) {
case ROFFT_HEAD:
term_newln(p);
break;
case ROFFT_BODY:
term_newln(p);
break;
default:
break;
}
}
static int
pre_SH(DECL_ARGS)
{
int i;
switch (n->type) {
case ROFFT_BLOCK:
mt->fl &= ~MANT_LITERAL;
mt->lmargin[mt->lmargincur] = term_len(p, p->defindent);
mt->offset = term_len(p, p->defindent);
/*
* No vertical space before the first section
* and after an empty section.
*/
do {
n = n->prev;
} while (n != NULL && termacts[n->tok].flags & MAN_NOTEXT);
if (n == NULL || (n->tok == MAN_SH && n->body->child == NULL))
break;
for (i = 0; i < mt->pardist; i++)
term_vspace(p);
break;
case ROFFT_HEAD:
term_fontrepl(p, TERMFONT_BOLD);
p->offset = 0;
p->rmargin = mt->offset;
p->trailspace = mt->offset;
p->flags |= TERMP_NOBREAK | TERMP_BRIND;
break;
case ROFFT_BODY:
p->offset = mt->offset;
p->rmargin = p->maxrmargin;
p->trailspace = 0;
p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND);
break;
default:
break;
}
return 1;
}
static void
post_SH(DECL_ARGS)
{
switch (n->type) {
case ROFFT_HEAD:
term_newln(p);
break;
case ROFFT_BODY:
term_newln(p);
break;
default:
break;
}
}
static int
pre_RS(DECL_ARGS)
{
struct roffsu su;
switch (n->type) {
case ROFFT_BLOCK:
term_newln(p);
return 1;
case ROFFT_HEAD:
return 0;
default:
break;
}
n = n->parent->head;
n->aux = SHRT_MAX + 1;
if (n->child == NULL)
n->aux = mt->lmargin[mt->lmargincur];
else if (a2roffsu(n->child->string, &su, SCALE_EN))
n->aux = term_hspan(p, &su) / 24;
if (n->aux < 0 && (size_t)(-n->aux) > mt->offset)
n->aux = -mt->offset;
else if (n->aux > SHRT_MAX)
n->aux = term_len(p, p->defindent);
mt->offset += n->aux;
p->offset = mt->offset;
p->rmargin = p->maxrmargin;
if (++mt->lmarginsz < MAXMARGINS)
mt->lmargincur = mt->lmarginsz;
mt->lmargin[mt->lmargincur] = term_len(p, p->defindent);
return 1;
}
static void
post_RS(DECL_ARGS)
{
switch (n->type) {
case ROFFT_BLOCK:
return;
case ROFFT_HEAD:
return;
default:
term_newln(p);
break;
}
mt->offset -= n->parent->head->aux;
p->offset = mt->offset;
if (--mt->lmarginsz < MAXMARGINS)
mt->lmargincur = mt->lmarginsz;
}
static int
pre_UR(DECL_ARGS)
{
return n->type != ROFFT_HEAD;
}
static void
post_UR(DECL_ARGS)
{
if (n->type != ROFFT_BLOCK)
return;
term_word(p, "<");
p->flags |= TERMP_NOSPACE;
if (NULL != n->child->child)
print_man_node(p, mt, n->child->child, meta);
p->flags |= TERMP_NOSPACE;
term_word(p, ">");
}
static void
print_man_node(DECL_ARGS)
{
size_t rm, rmax;
int c;
switch (n->type) {
case ROFFT_TEXT:
/*
* If we have a blank line, output a vertical space.
* If we have a space as the first character, break
* before printing the line's data.
*/
if ('\0' == *n->string) {
term_vspace(p);
return;
} else if (' ' == *n->string && MAN_LINE & n->flags)
term_newln(p);
term_word(p, n->string);
goto out;
case ROFFT_EQN:
if ( ! (n->flags & MAN_LINE))
p->flags |= TERMP_NOSPACE;
term_eqn(p, n->eqn);
if (n->next != NULL && ! (n->next->flags & MAN_LINE))
p->flags |= TERMP_NOSPACE;
return;
case ROFFT_TBL:
if (p->tbl.cols == NULL)
term_vspace(p);
term_tbl(p, n->span);
return;
default:
break;
}
if ( ! (MAN_NOTEXT & termacts[n->tok].flags))
term_fontrepl(p, TERMFONT_NONE);
c = 1;
if (termacts[n->tok].pre)
c = (*termacts[n->tok].pre)(p, mt, n, meta);
if (c && n->child)
print_man_nodelist(p, mt, n->child, meta);
if (termacts[n->tok].post)
(*termacts[n->tok].post)(p, mt, n, meta);
if ( ! (MAN_NOTEXT & termacts[n->tok].flags))
term_fontrepl(p, TERMFONT_NONE);
out:
/*
* If we're in a literal context, make sure that words
* together on the same line stay together. This is a
* POST-printing call, so we check the NEXT word. Since
* -man doesn't have nested macros, we don't need to be
* more specific than this.
*/
if (mt->fl & MANT_LITERAL &&
! (p->flags & (TERMP_NOBREAK | TERMP_NONEWLINE)) &&
(n->next == NULL || n->next->flags & MAN_LINE)) {
rm = p->rmargin;
rmax = p->maxrmargin;
p->rmargin = p->maxrmargin = TERM_MAXMARGIN;
p->flags |= TERMP_NOSPACE;
if (n->string != NULL && *n->string != '\0')
term_flushln(p);
else
term_newln(p);
if (rm < rmax && n->parent->tok == MAN_HP) {
p->offset = rm;
p->rmargin = rmax;
} else
p->rmargin = rm;
p->maxrmargin = rmax;
}
if (MAN_EOS & n->flags)
p->flags |= TERMP_SENTENCE;
}
static void
print_man_nodelist(DECL_ARGS)
{
while (n != NULL) {
print_man_node(p, mt, n, meta);
n = n->next;
}
}
static void
print_man_foot(struct termp *p, const struct roff_meta *meta)
{
char *title;
size_t datelen, titlen;
assert(meta->title);
assert(meta->msec);
assert(meta->date);
term_fontrepl(p, TERMFONT_NONE);
if (meta->hasbody)
term_vspace(p);
/*
* Temporary, undocumented option to imitate mdoc(7) output.
* In the bottom right corner, use the operating system
* instead of the title.
*/
if ( ! p->mdocstyle) {
if (meta->hasbody) {
term_vspace(p);
term_vspace(p);
}
mandoc_asprintf(&title, "%s(%s)",
meta->title, meta->msec);
} else if (meta->os) {
title = mandoc_strdup(meta->os);
} else {
title = mandoc_strdup("");
}
datelen = term_strlen(p, meta->date);
/* Bottom left corner: operating system. */
p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;
p->trailspace = 1;
p->offset = 0;
p->rmargin = p->maxrmargin > datelen ?
(p->maxrmargin + term_len(p, 1) - datelen) / 2 : 0;
if (meta->os)
term_word(p, meta->os);
term_flushln(p);
/* At the bottom in the middle: manual date. */
p->offset = p->rmargin;
titlen = term_strlen(p, title);
p->rmargin = p->maxrmargin > titlen ? p->maxrmargin - titlen : 0;
p->flags |= TERMP_NOSPACE;
term_word(p, meta->date);
term_flushln(p);
/* Bottom right corner: manual title and section. */
p->flags &= ~TERMP_NOBREAK;
p->flags |= TERMP_NOSPACE;
p->trailspace = 0;
p->offset = p->rmargin;
p->rmargin = p->maxrmargin;
term_word(p, title);
term_flushln(p);
free(title);
}
static void
print_man_head(struct termp *p, const struct roff_meta *meta)
{
const char *volume;
char *title;
size_t vollen, titlen;
assert(meta->title);
assert(meta->msec);
volume = NULL == meta->vol ? "" : meta->vol;
vollen = term_strlen(p, volume);
/* Top left corner: manual title and section. */
mandoc_asprintf(&title, "%s(%s)", meta->title, meta->msec);
titlen = term_strlen(p, title);
p->flags |= TERMP_NOBREAK | TERMP_NOSPACE;
p->trailspace = 1;
p->offset = 0;
p->rmargin = 2 * (titlen+1) + vollen < p->maxrmargin ?
(p->maxrmargin - vollen + term_len(p, 1)) / 2 :
vollen < p->maxrmargin ? p->maxrmargin - vollen : 0;
term_word(p, title);
term_flushln(p);
/* At the top in the middle: manual volume. */
p->flags |= TERMP_NOSPACE;
p->offset = p->rmargin;
p->rmargin = p->offset + vollen + titlen < p->maxrmargin ?
p->maxrmargin - titlen : p->maxrmargin;
term_word(p, volume);
term_flushln(p);
/* Top right corner: title and section, again. */
p->flags &= ~TERMP_NOBREAK;
p->trailspace = 0;
if (p->rmargin + titlen <= p->maxrmargin) {
p->flags |= TERMP_NOSPACE;
p->offset = p->rmargin;
p->rmargin = p->maxrmargin;
term_word(p, title);
term_flushln(p);
}
p->flags &= ~TERMP_NOSPACE;
p->offset = 0;
p->rmargin = p->maxrmargin;
/*
* Groff prints three blank lines before the content.
* Do the same, except in the temporary, undocumented
* mode imitating mdoc(7) output.
*/
term_vspace(p);
if ( ! p->mdocstyle) {
term_vspace(p);
term_vspace(p);
}
free(title);
}