/* Id: mdoc_term.c,v 1.380 2020/04/06 10:16:17 schwarze Exp */

/* Id: mdoc_term.c,v 1.380 2020/04/06 10:16:17 schwarze Exp */
/*
* Copyright (c) 2010, 2012-2020 Ingo Schwarze <[email protected]>
* Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <[email protected]>
* Copyright (c) 2013 Franco Fichtner <[email protected]>
*
* 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.
*
* Plain text formatter for mdoc(7), used by mandoc(1)
* for ASCII, UTF-8, PostScript, and PDF output.
*/
#include "config.h"

#include <sys/types.h>

#include <assert.h>
#include <ctype.h>
#include <limits.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "mandoc_aux.h"
#include "roff.h"
#include "mdoc.h"
#include "out.h"
#include "term.h"
#include "term_tag.h"
#include "main.h"

struct termpair {
struct termpair *ppair;
int count;
};

#define DECL_ARGS struct termp *p, \
struct termpair *pair, \
const struct roff_meta *meta, \
struct roff_node *n

struct mdoc_term_act {
int (*pre)(DECL_ARGS);
void (*post)(DECL_ARGS);
};

static int a2width(const struct termp *, const char *);

static void print_bvspace(struct termp *,
struct roff_node *, struct roff_node *);
static void print_mdoc_node(DECL_ARGS);
static void print_mdoc_nodelist(DECL_ARGS);
static void print_mdoc_head(struct termp *, const struct roff_meta *);
static void print_mdoc_foot(struct termp *, const struct roff_meta *);
static void synopsis_pre(struct termp *, struct roff_node *);

static void termp____post(DECL_ARGS);
static void termp__t_post(DECL_ARGS);
static void termp_bd_post(DECL_ARGS);
static void termp_bk_post(DECL_ARGS);
static void termp_bl_post(DECL_ARGS);
static void termp_eo_post(DECL_ARGS);
static void termp_fd_post(DECL_ARGS);
static void termp_fo_post(DECL_ARGS);
static void termp_in_post(DECL_ARGS);
static void termp_it_post(DECL_ARGS);
static void termp_lb_post(DECL_ARGS);
static void termp_nm_post(DECL_ARGS);
static void termp_pf_post(DECL_ARGS);
static void termp_quote_post(DECL_ARGS);
static void termp_sh_post(DECL_ARGS);
static void termp_ss_post(DECL_ARGS);
static void termp_xx_post(DECL_ARGS);

static int termp__a_pre(DECL_ARGS);
static int termp__t_pre(DECL_ARGS);
static int termp_abort_pre(DECL_ARGS);
static int termp_an_pre(DECL_ARGS);
static int termp_ap_pre(DECL_ARGS);
static int termp_bd_pre(DECL_ARGS);
static int termp_bf_pre(DECL_ARGS);
static int termp_bk_pre(DECL_ARGS);
static int termp_bl_pre(DECL_ARGS);
static int termp_bold_pre(DECL_ARGS);
static int termp_d1_pre(DECL_ARGS);
static int termp_eo_pre(DECL_ARGS);
static int termp_ex_pre(DECL_ARGS);
static int termp_fa_pre(DECL_ARGS);
static int termp_fd_pre(DECL_ARGS);
static int termp_fl_pre(DECL_ARGS);
static int termp_fn_pre(DECL_ARGS);
static int termp_fo_pre(DECL_ARGS);
static int termp_ft_pre(DECL_ARGS);
static int termp_in_pre(DECL_ARGS);
static int termp_it_pre(DECL_ARGS);
static int termp_li_pre(DECL_ARGS);
static int termp_lk_pre(DECL_ARGS);
static int termp_nd_pre(DECL_ARGS);
static int termp_nm_pre(DECL_ARGS);
static int termp_ns_pre(DECL_ARGS);
static int termp_quote_pre(DECL_ARGS);
static int termp_rs_pre(DECL_ARGS);
static int termp_sh_pre(DECL_ARGS);
static int termp_skip_pre(DECL_ARGS);
static int termp_sm_pre(DECL_ARGS);
static int termp_pp_pre(DECL_ARGS);
static int termp_ss_pre(DECL_ARGS);
static int termp_under_pre(DECL_ARGS);
static int termp_vt_pre(DECL_ARGS);
static int termp_xr_pre(DECL_ARGS);
static int termp_xx_pre(DECL_ARGS);

static const struct mdoc_term_act mdoc_term_acts[MDOC_MAX - MDOC_Dd] = {
{ NULL, NULL }, /* Dd */
{ NULL, NULL }, /* Dt */
{ NULL, NULL }, /* Os */
{ termp_sh_pre, termp_sh_post }, /* Sh */
{ termp_ss_pre, termp_ss_post }, /* Ss */
{ termp_pp_pre, NULL }, /* Pp */
{ termp_d1_pre, termp_bl_post }, /* D1 */
{ termp_d1_pre, termp_bl_post }, /* Dl */
{ termp_bd_pre, termp_bd_post }, /* Bd */
{ NULL, NULL }, /* Ed */
{ termp_bl_pre, termp_bl_post }, /* Bl */
{ NULL, NULL }, /* El */
{ termp_it_pre, termp_it_post }, /* It */
{ termp_under_pre, NULL }, /* Ad */
{ termp_an_pre, NULL }, /* An */
{ termp_ap_pre, NULL }, /* Ap */
{ termp_under_pre, NULL }, /* Ar */
{ termp_fd_pre, NULL }, /* Cd */
{ termp_bold_pre, NULL }, /* Cm */
{ termp_li_pre, NULL }, /* Dv */
{ NULL, NULL }, /* Er */
{ NULL, NULL }, /* Ev */
{ termp_ex_pre, NULL }, /* Ex */
{ termp_fa_pre, NULL }, /* Fa */
{ termp_fd_pre, termp_fd_post }, /* Fd */
{ termp_fl_pre, NULL }, /* Fl */
{ termp_fn_pre, NULL }, /* Fn */
{ termp_ft_pre, NULL }, /* Ft */
{ termp_bold_pre, NULL }, /* Ic */
{ termp_in_pre, termp_in_post }, /* In */
{ termp_li_pre, NULL }, /* Li */
{ termp_nd_pre, NULL }, /* Nd */
{ termp_nm_pre, termp_nm_post }, /* Nm */
{ termp_quote_pre, termp_quote_post }, /* Op */
{ termp_abort_pre, NULL }, /* Ot */
{ termp_under_pre, NULL }, /* Pa */
{ termp_ex_pre, NULL }, /* Rv */
{ NULL, NULL }, /* St */
{ termp_under_pre, NULL }, /* Va */
{ termp_vt_pre, NULL }, /* Vt */
{ termp_xr_pre, NULL }, /* Xr */
{ termp__a_pre, termp____post }, /* %A */
{ termp_under_pre, termp____post }, /* %B */
{ NULL, termp____post }, /* %D */
{ termp_under_pre, termp____post }, /* %I */
{ termp_under_pre, termp____post }, /* %J */
{ NULL, termp____post }, /* %N */
{ NULL, termp____post }, /* %O */
{ NULL, termp____post }, /* %P */
{ NULL, termp____post }, /* %R */
{ termp__t_pre, termp__t_post }, /* %T */
{ NULL, termp____post }, /* %V */
{ NULL, NULL }, /* Ac */
{ termp_quote_pre, termp_quote_post }, /* Ao */
{ termp_quote_pre, termp_quote_post }, /* Aq */
{ NULL, NULL }, /* At */
{ NULL, NULL }, /* Bc */
{ termp_bf_pre, NULL }, /* Bf */
{ termp_quote_pre, termp_quote_post }, /* Bo */
{ termp_quote_pre, termp_quote_post }, /* Bq */
{ termp_xx_pre, termp_xx_post }, /* Bsx */
{ NULL, NULL }, /* Bx */
{ termp_skip_pre, NULL }, /* Db */
{ NULL, NULL }, /* Dc */
{ termp_quote_pre, termp_quote_post }, /* Do */
{ termp_quote_pre, termp_quote_post }, /* Dq */
{ NULL, NULL }, /* Ec */ /* FIXME: no space */
{ NULL, NULL }, /* Ef */
{ termp_under_pre, NULL }, /* Em */
{ termp_eo_pre, termp_eo_post }, /* Eo */
{ termp_xx_pre, termp_xx_post }, /* Fx */
{ termp_bold_pre, NULL }, /* Ms */
{ termp_li_pre, NULL }, /* No */
{ termp_ns_pre, NULL }, /* Ns */
{ termp_xx_pre, termp_xx_post }, /* Nx */
{ termp_xx_pre, termp_xx_post }, /* Ox */
{ NULL, NULL }, /* Pc */
{ NULL, termp_pf_post }, /* Pf */
{ termp_quote_pre, termp_quote_post }, /* Po */
{ termp_quote_pre, termp_quote_post }, /* Pq */
{ NULL, NULL }, /* Qc */
{ termp_quote_pre, termp_quote_post }, /* Ql */
{ termp_quote_pre, termp_quote_post }, /* Qo */
{ termp_quote_pre, termp_quote_post }, /* Qq */
{ NULL, NULL }, /* Re */
{ termp_rs_pre, NULL }, /* Rs */
{ NULL, NULL }, /* Sc */
{ termp_quote_pre, termp_quote_post }, /* So */
{ termp_quote_pre, termp_quote_post }, /* Sq */
{ termp_sm_pre, NULL }, /* Sm */
{ termp_under_pre, NULL }, /* Sx */
{ termp_bold_pre, NULL }, /* Sy */
{ NULL, NULL }, /* Tn */
{ termp_xx_pre, termp_xx_post }, /* Ux */
{ NULL, NULL }, /* Xc */
{ NULL, NULL }, /* Xo */
{ termp_fo_pre, termp_fo_post }, /* Fo */
{ NULL, NULL }, /* Fc */
{ termp_quote_pre, termp_quote_post }, /* Oo */
{ NULL, NULL }, /* Oc */
{ termp_bk_pre, termp_bk_post }, /* Bk */
{ NULL, NULL }, /* Ek */
{ NULL, NULL }, /* Bt */
{ NULL, NULL }, /* Hf */
{ termp_under_pre, NULL }, /* Fr */
{ NULL, NULL }, /* Ud */
{ NULL, termp_lb_post }, /* Lb */
{ termp_abort_pre, NULL }, /* Lp */
{ termp_lk_pre, NULL }, /* Lk */
{ termp_under_pre, NULL }, /* Mt */
{ termp_quote_pre, termp_quote_post }, /* Brq */
{ termp_quote_pre, termp_quote_post }, /* Bro */
{ NULL, NULL }, /* Brc */
{ NULL, termp____post }, /* %C */
{ termp_skip_pre, NULL }, /* Es */
{ termp_quote_pre, termp_quote_post }, /* En */
{ termp_xx_pre, termp_xx_post }, /* Dx */
{ NULL, termp____post }, /* %Q */
{ NULL, termp____post }, /* %U */
{ NULL, NULL }, /* Ta */
{ termp_skip_pre, NULL }, /* Tg */
};

void
terminal_mdoc(void *arg, const struct roff_meta *mdoc)
{
struct roff_node *n, *nn;
struct termp *p;
size_t save_defindent;

p = (struct termp *)arg;
p->tcol->rmargin = p->maxrmargin = p->defrmargin;
term_tab_set(p, NULL);
term_tab_set(p, "T");
term_tab_set(p, ".5i");

n = mdoc->first->child;
if (p->synopsisonly) {
for (nn = NULL; n != NULL; n = n->next) {
if (n->tok != MDOC_Sh)
continue;
if (n->sec == SEC_SYNOPSIS)
break;
if (nn == NULL && n->sec == SEC_NAME)
nn = n;
}
if (n == NULL)
n = nn;
p->flags |= TERMP_NOSPACE;
if (n != NULL && (n = n->child->next->child) != NULL)
print_mdoc_nodelist(p, NULL, mdoc, n);
term_newln(p);
} else {
save_defindent = p->defindent;
if (p->defindent == 0)
p->defindent = 5;
term_begin(p, print_mdoc_head, print_mdoc_foot, mdoc);
while (n != NULL &&
(n->type == ROFFT_COMMENT ||
n->flags & NODE_NOPRT))
n = n->next;
if (n != NULL) {
if (n->tok != MDOC_Sh)
term_vspace(p);
print_mdoc_nodelist(p, NULL, mdoc, n);
}
term_end(p);
p->defindent = save_defindent;
}
}

static void
print_mdoc_nodelist(DECL_ARGS)
{
while (n != NULL) {
print_mdoc_node(p, pair, meta, n);
n = n->next;
}
}

static void
print_mdoc_node(DECL_ARGS)
{
const struct mdoc_term_act *act = NULL; // XXX: gcc
struct termpair npair;
size_t offset, rmargin;
int chld;

/*
* In no-fill mode, break the output line at the beginning
* of new input lines except after \c, and nowhere else.
*/

if (n->flags & NODE_NOFILL) {
if (n->flags & NODE_LINE &&
(p->flags & TERMP_NONEWLINE) == 0)
term_newln(p);
p->flags |= TERMP_BRNEVER;
} else
p->flags &= ~TERMP_BRNEVER;

if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
return;

chld = 1;
offset = p->tcol->offset;
rmargin = p->tcol->rmargin;
n->flags &= ~NODE_ENDED;
n->prev_font = p->fonti;

memset(&npair, 0, sizeof(struct termpair));
npair.ppair = pair;

if (n->flags & NODE_ID && n->tok != MDOC_Pp &&
(n->tok != MDOC_It || n->type != ROFFT_BLOCK))
term_tag_write(n, p->line);

/*
* Keeps only work until the end of a line. If a keep was
* invoked in a prior line, revert it to PREKEEP.
*/

if (p->flags & TERMP_KEEP && n->flags & NODE_LINE) {
p->flags &= ~TERMP_KEEP;
p->flags |= TERMP_PREKEEP;
}

/*
* After the keep flags have been set up, we may now
* produce output. Note that some pre-handlers do so.
*/

act = NULL;
switch (n->type) {
case ROFFT_TEXT:
if (n->flags & NODE_LINE) {
switch (*n->string) {
case '\0':
if (p->flags & TERMP_NONEWLINE)
term_newln(p);
else
term_vspace(p);
return;
case ' ':
if ((p->flags & TERMP_NONEWLINE) == 0)
term_newln(p);
break;
default:
break;
}
}
if (NODE_DELIMC & n->flags)
p->flags |= TERMP_NOSPACE;
term_word(p, n->string);
if (NODE_DELIMO & n->flags)
p->flags |= TERMP_NOSPACE;
break;
case ROFFT_EQN:
if ( ! (n->flags & NODE_LINE))
p->flags |= TERMP_NOSPACE;
term_eqn(p, n->eqn);
if (n->next != NULL && ! (n->next->flags & NODE_LINE))
p->flags |= TERMP_NOSPACE;
break;
case ROFFT_TBL:
if (p->tbl.cols == NULL)
term_newln(p);
term_tbl(p, n->span);
break;
default:
if (n->tok < ROFF_MAX) {
roff_term_pre(p, n);
return;
}
assert(n->tok >= MDOC_Dd && n->tok < MDOC_MAX);
act = mdoc_term_acts + (n->tok - MDOC_Dd);
if (act->pre != NULL &&
(n->end == ENDBODY_NOT || n->child != NULL))
chld = (*act->pre)(p, &npair, meta, n);
break;
}

if (chld && n->child)
print_mdoc_nodelist(p, &npair, meta, n->child);

term_fontpopq(p,
(ENDBODY_NOT == n->end ? n : n->body)->prev_font);

switch (n->type) {
case ROFFT_TEXT:
break;
case ROFFT_TBL:
break;
case ROFFT_EQN:
break;
default:
if (act->post == NULL || n->flags & NODE_ENDED)
break;
(void)(*act->post)(p, &npair, meta, n);

/*
* Explicit end tokens not only call the post
* handler, but also tell the respective block
* that it must not call the post handler again.
*/
if (ENDBODY_NOT != n->end)
n->body->flags |= NODE_ENDED;
break;
}

if (NODE_EOS & n->flags)
p->flags |= TERMP_SENTENCE;

if (n->type != ROFFT_TEXT)
p->tcol->offset = offset;
p->tcol->rmargin = rmargin;
}

static void
print_mdoc_foot(struct termp *p, const struct roff_meta *meta)
{
size_t sz;

term_fontrepl(p, TERMFONT_NONE);

/*
* Output the footer in new-groff style, that is, three columns
* with the middle being the manual date and flanking columns
* being the operating system:
*
* SYSTEM DATE SYSTEM
*/

term_vspace(p);

p->tcol->offset = 0;
sz = term_strlen(p, meta->date);
p->tcol->rmargin = p->maxrmargin > sz ?
(p->maxrmargin + term_len(p, 1) - sz) / 2 : 0;
p->trailspace = 1;
p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;

term_word(p, meta->os);
term_flushln(p);

p->tcol->offset = p->tcol->rmargin;
sz = term_strlen(p, meta->os);
p->tcol->rmargin = p->maxrmargin > sz ? p->maxrmargin - sz : 0;
p->flags |= TERMP_NOSPACE;

term_word(p, meta->date);
term_flushln(p);

p->tcol->offset = p->tcol->rmargin;
p->tcol->rmargin = p->maxrmargin;
p->trailspace = 0;
p->flags &= ~TERMP_NOBREAK;
p->flags |= TERMP_NOSPACE;

term_word(p, meta->os);
term_flushln(p);

p->tcol->offset = 0;
p->tcol->rmargin = p->maxrmargin;
p->flags = 0;
}

static void
print_mdoc_head(struct termp *p, const struct roff_meta *meta)
{
char *volume, *title;
size_t vollen, titlen;

/*
* The header is strange. It has three components, which are
* really two with the first duplicated. It goes like this:
*
* IDENTIFIER TITLE IDENTIFIER
*
* The IDENTIFIER is NAME(SECTION), which is the command-name
* (if given, or "unknown" if not) followed by the manual page
* section. These are given in `Dt'. The TITLE is a free-form
* string depending on the manual volume. If not specified, it
* switches on the manual section.
*/

assert(meta->vol);
if (NULL == meta->arch)
volume = mandoc_strdup(meta->vol);
else
mandoc_asprintf(&volume, "%s (%s)",
meta->vol, meta->arch);
vollen = term_strlen(p, volume);

if (NULL == meta->msec)
title = mandoc_strdup(meta->title);
else
mandoc_asprintf(&title, "%s(%s)",
meta->title, meta->msec);
titlen = term_strlen(p, title);

p->flags |= TERMP_NOBREAK | TERMP_NOSPACE;
p->trailspace = 1;
p->tcol->offset = 0;
p->tcol->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);

p->flags |= TERMP_NOSPACE;
p->tcol->offset = p->tcol->rmargin;
p->tcol->rmargin = p->tcol->offset + vollen + titlen <
p->maxrmargin ? p->maxrmargin - titlen : p->maxrmargin;

term_word(p, volume);
term_flushln(p);

p->flags &= ~TERMP_NOBREAK;
p->trailspace = 0;
if (p->tcol->rmargin + titlen <= p->maxrmargin) {
p->flags |= TERMP_NOSPACE;
p->tcol->offset = p->tcol->rmargin;
p->tcol->rmargin = p->maxrmargin;
term_word(p, title);
term_flushln(p);
}

p->flags &= ~TERMP_NOSPACE;
p->tcol->offset = 0;
p->tcol->rmargin = p->maxrmargin;
free(title);
free(volume);
}

static int
a2width(const struct termp *p, const char *v)
{
struct roffsu su;
const char *end;

end = a2roffsu(v, &su, SCALE_MAX);
if (end == NULL || *end != '\0') {
SCALE_HS_INIT(&su, term_strlen(p, v));
su.scale /= term_strlen(p, "0");
}
return term_hen(p, &su);
}

/*
* Determine how much space to print out before block elements of `It'
* (and thus `Bl') and `Bd'. And then go ahead and print that space,
* too.
*/
static void
print_bvspace(struct termp *p, struct roff_node *bl, struct roff_node *n)
{
struct roff_node *nn;

term_newln(p);

if ((bl->tok == MDOC_Bd && bl->norm->Bd.comp) ||
(bl->tok == MDOC_Bl && bl->norm->Bl.comp))
return;

/* Do not vspace directly after Ss/Sh. */

nn = n;
while (roff_node_prev(nn) == NULL) {
do {
nn = nn->parent;
if (nn->type == ROFFT_ROOT)
return;
} while (nn->type != ROFFT_BLOCK);
if (nn->tok == MDOC_Sh || nn->tok == MDOC_Ss)
return;
if (nn->tok == MDOC_It &&
nn->parent->parent->norm->Bl.type != LIST_item)
break;
}

/*
* No vertical space after:
* items in .Bl -column
* items without a body in .Bl -diag
*/

if (bl->tok != MDOC_Bl ||
n->prev == NULL || n->prev->tok != MDOC_It ||
(bl->norm->Bl.type != LIST_column &&
(bl->norm->Bl.type != LIST_diag ||
n->prev->body->child != NULL)))
term_vspace(p);
}

static int
termp_it_pre(DECL_ARGS)
{
struct roffsu su;
char buf[24];
const struct roff_node *bl, *nn;
size_t ncols, dcol;
int i, offset, width;
enum mdoc_list type;

if (n->type == ROFFT_BLOCK) {
print_bvspace(p, n->parent->parent, n);
if (n->flags & NODE_ID)
term_tag_write(n, p->line);
return 1;
}

bl = n->parent->parent->parent;
type = bl->norm->Bl.type;

/*
* Defaults for specific list types.
*/

switch (type) {
case LIST_bullet:
case LIST_dash:
case LIST_hyphen:
case LIST_enum:
width = term_len(p, 2);
break;
case LIST_hang:
case LIST_tag:
width = term_len(p, 8);
break;
case LIST_column:
width = term_len(p, 10);
break;
default:
width = 0;
break;
}
offset = 0;

/*
* First calculate width and offset. This is pretty easy unless
* we're a -column list, in which case all prior columns must
* be accounted for.
*/

if (bl->norm->Bl.offs != NULL) {
offset = a2width(p, bl->norm->Bl.offs);
if (offset < 0 && (size_t)(-offset) > p->tcol->offset)
offset = -p->tcol->offset;
else if (offset > SHRT_MAX)
offset = 0;
}

switch (type) {
case LIST_column:
if (n->type == ROFFT_HEAD)
break;

/*
* Imitate groff's column handling:
* - For each earlier column, add its width.
* - For less than 5 columns, add four more blanks per
* column.
* - For exactly 5 columns, add three more blank per
* column.
* - For more than 5 columns, add only one column.
*/
ncols = bl->norm->Bl.ncols;
dcol = ncols < 5 ? term_len(p, 4) :
ncols == 5 ? term_len(p, 3) : term_len(p, 1);

/*
* Calculate the offset by applying all prior ROFFT_BODY,
* so we stop at the ROFFT_HEAD (nn->prev == NULL).
*/

for (i = 0, nn = n->prev;
nn->prev && i < (int)ncols;
nn = nn->prev, i++) {
SCALE_HS_INIT(&su,
term_strlen(p, bl->norm->Bl.cols[i]));
su.scale /= term_strlen(p, "0");
offset += term_hen(p, &su) + dcol;
}

/*
* When exceeding the declared number of columns, leave
* the remaining widths at 0. This will later be
* adjusted to the default width of 10, or, for the last
* column, stretched to the right margin.
*/
if (i >= (int)ncols)
break;

/*
* Use the declared column widths, extended as explained
* in the preceding paragraph.
*/
SCALE_HS_INIT(&su, term_strlen(p, bl->norm->Bl.cols[i]));
su.scale /= term_strlen(p, "0");
width = term_hen(p, &su) + dcol;
break;
default:
if (NULL == bl->norm->Bl.width)
break;

/*
* Note: buffer the width by 2, which is groff's magic
* number for buffering single arguments. See the above
* handling for column for how this changes.
*/
width = a2width(p, bl->norm->Bl.width) + term_len(p, 2);
if (width < 0 && (size_t)(-width) > p->tcol->offset)
width = -p->tcol->offset;
else if (width > SHRT_MAX)
width = 0;
break;
}

/*
* Whitespace control. Inset bodies need an initial space,
* while diagonal bodies need two.
*/

p->flags |= TERMP_NOSPACE;

switch (type) {
case LIST_diag:
if (n->type == ROFFT_BODY)
term_word(p, "\\ \\ ");
break;
case LIST_inset:
if (n->type == ROFFT_BODY && n->parent->head->child != NULL)
term_word(p, "\\ ");
break;
default:
break;
}

p->flags |= TERMP_NOSPACE;

switch (type) {
case LIST_diag:
if (n->type == ROFFT_HEAD)
term_fontpush(p, TERMFONT_BOLD);
break;
default:
break;
}

/*
* Pad and break control. This is the tricky part. These flags
* are documented in term_flushln() in term.c. Note that we're
* going to unset all of these flags in termp_it_post() when we
* exit.
*/

switch (type) {
case LIST_enum:
case LIST_bullet:
case LIST_dash:
case LIST_hyphen:
if (n->type == ROFFT_HEAD) {
p->flags |= TERMP_NOBREAK | TERMP_HANG;
p->trailspace = 1;
} else if (width <= (int)term_len(p, 2))
p->flags |= TERMP_NOPAD;
break;
case LIST_hang:
if (n->type != ROFFT_HEAD)
break;
p->flags |= TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG;
p->trailspace = 1;
break;
case LIST_tag:
if (n->type != ROFFT_HEAD)
break;

p->flags |= TERMP_NOBREAK | TERMP_BRTRSP | TERMP_BRIND;
p->trailspace = 2;

if (NULL == n->next || NULL == n->next->child)
p->flags |= TERMP_HANG;
break;
case LIST_column:
if (n->type == ROFFT_HEAD)
break;

if (NULL == n->next) {
p->flags &= ~TERMP_NOBREAK;
p->trailspace = 0;
} else {
p->flags |= TERMP_NOBREAK;
p->trailspace = 1;
}

break;
case LIST_diag:
if (n->type != ROFFT_HEAD)
break;
p->flags |= TERMP_NOBREAK | TERMP_BRIND;
p->trailspace = 1;
break;
default:
break;
}

/*
* Margin control. Set-head-width lists have their right
* margins shortened. The body for these lists has the offset
* necessarily lengthened. Everybody gets the offset.
*/

p->tcol->offset += offset;

switch (type) {
case LIST_bullet:
case LIST_dash:
case LIST_enum:
case LIST_hyphen:
case LIST_hang:
case LIST_tag:
if (n->type == ROFFT_HEAD)
p->tcol->rmargin = p->tcol->offset + width;
else
p->tcol->offset += width;
break;
case LIST_column:
assert(width);
p->tcol->rmargin = p->tcol->offset + width;
/*
* XXX - this behaviour is not documented: the
* right-most column is filled to the right margin.
*/
if (n->type == ROFFT_HEAD)
break;
if (n->next == NULL && p->tcol->rmargin < p->maxrmargin)
p->tcol->rmargin = p->maxrmargin;
break;
default:
break;
}

/*
* The dash, hyphen, bullet and enum lists all have a special
* HEAD character (temporarily bold, in some cases).
*/

if (n->type == ROFFT_HEAD)
switch (type) {
case LIST_bullet:
term_fontpush(p, TERMFONT_BOLD);
term_word(p, "\\[bu]");
term_fontpop(p);
break;
case LIST_dash:
case LIST_hyphen:
term_fontpush(p, TERMFONT_BOLD);
term_word(p, "-");
term_fontpop(p);
break;
case LIST_enum:
(pair->ppair->ppair->count)++;
(void)snprintf(buf, sizeof(buf), "%d.",
pair->ppair->ppair->count);
term_word(p, buf);
break;
default:
break;
}

/*
* If we're not going to process our children, indicate so here.
*/

switch (type) {
case LIST_bullet:
case LIST_item:
case LIST_dash:
case LIST_hyphen:
case LIST_enum:
if (n->type == ROFFT_HEAD)
return 0;
break;
case LIST_column:
if (n->type == ROFFT_HEAD)
return 0;
p->minbl = 0;
break;
default:
break;
}

return 1;
}

static void
termp_it_post(DECL_ARGS)
{
enum mdoc_list type;

if (n->type == ROFFT_BLOCK)
return;

type = n->parent->parent->parent->norm->Bl.type;

switch (type) {
case LIST_item:
case LIST_diag:
case LIST_inset:
if (n->type == ROFFT_BODY)
term_newln(p);
break;
case LIST_column:
if (n->type == ROFFT_BODY)
term_flushln(p);
break;
default:
term_newln(p);
break;
}

/*
* Now that our output is flushed, we can reset our tags. Since
* only `It' sets these flags, we're free to assume that nobody
* has munged them in the meanwhile.
*/

p->flags &= ~(TERMP_NOBREAK | TERMP_BRTRSP | TERMP_BRIND | TERMP_HANG);
p->trailspace = 0;
}

static int
termp_nm_pre(DECL_ARGS)
{
const char *cp;

if (n->type == ROFFT_BLOCK) {
p->flags |= TERMP_PREKEEP;
return 1;
}

if (n->type == ROFFT_BODY) {
if (n->child == NULL)
return 0;
p->flags |= TERMP_NOSPACE;
cp = NULL;
if (n->prev->child != NULL)
cp = n->prev->child->string;
if (cp == NULL)
cp = meta->name;
if (cp == NULL)
p->tcol->offset += term_len(p, 6);
else
p->tcol->offset += term_len(p, 1) +
term_strlen(p, cp);
return 1;
}

if (n->child == NULL)
return 0;

if (n->type == ROFFT_HEAD)
synopsis_pre(p, n->parent);

if (n->type == ROFFT_HEAD &&
n->next != NULL && n->next->child != NULL) {
p->flags |= TERMP_NOSPACE | TERMP_NOBREAK | TERMP_BRIND;
p->trailspace = 1;
p->tcol->rmargin = p->tcol->offset + term_len(p, 1);
if (n->child == NULL)
p->tcol->rmargin += term_strlen(p, meta->name);
else if (n->child->type == ROFFT_TEXT) {
p->tcol->rmargin += term_strlen(p, n->child->string);
if (n->child->next != NULL)
p->flags |= TERMP_HANG;
} else {
p->tcol->rmargin += term_len(p, 5);
p->flags |= TERMP_HANG;
}
}
return termp_bold_pre(p, pair, meta, n);
}

static void
termp_nm_post(DECL_ARGS)
{
switch (n->type) {
case ROFFT_BLOCK:
p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
break;
case ROFFT_HEAD:
if (n->next == NULL || n->next->child == NULL)
break;
term_flushln(p);
p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG);
p->trailspace = 0;
break;
case ROFFT_BODY:
if (n->child != NULL)
term_flushln(p);
break;
default:
break;
}
}

static int
termp_fl_pre(DECL_ARGS)
{
struct roff_node *nn;

term_fontpush(p, TERMFONT_BOLD);
term_word(p, "\\-");

if (n->child != NULL ||
((nn = roff_node_next(n)) != NULL &&
nn->type != ROFFT_TEXT &&
(nn->flags & NODE_LINE) == 0))
p->flags |= TERMP_NOSPACE;

return 1;
}

static int
termp__a_pre(DECL_ARGS)
{
struct roff_node *nn;

if ((nn = roff_node_prev(n)) != NULL && nn->tok == MDOC__A &&
((nn = roff_node_next(n)) == NULL || nn->tok != MDOC__A))
term_word(p, "and");

return 1;
}

static int
termp_an_pre(DECL_ARGS)
{

if (n->norm->An.auth == AUTH_split) {
p->flags &= ~TERMP_NOSPLIT;
p->flags |= TERMP_SPLIT;
return 0;
}
if (n->norm->An.auth == AUTH_nosplit) {
p->flags &= ~TERMP_SPLIT;
p->flags |= TERMP_NOSPLIT;
return 0;
}

if (p->flags & TERMP_SPLIT)
term_newln(p);

if (n->sec == SEC_AUTHORS && ! (p->flags & TERMP_NOSPLIT))
p->flags |= TERMP_SPLIT;

return 1;
}

static int
termp_ns_pre(DECL_ARGS)
{

if ( ! (NODE_LINE & n->flags))
p->flags |= TERMP_NOSPACE;
return 1;
}

static int
termp_rs_pre(DECL_ARGS)
{
if (SEC_SEE_ALSO != n->sec)
return 1;
if (n->type == ROFFT_BLOCK && roff_node_prev(n) != NULL)
term_vspace(p);
return 1;
}

static int
termp_ex_pre(DECL_ARGS)
{
term_newln(p);
return 1;
}

static int
termp_nd_pre(DECL_ARGS)
{
if (n->type == ROFFT_BODY)
term_word(p, "\\(en");
return 1;
}

static int
termp_bl_pre(DECL_ARGS)
{
switch (n->type) {
case ROFFT_BLOCK:
term_newln(p);
return 1;
case ROFFT_HEAD:
return 0;
default:
return 1;
}
}

static void
termp_bl_post(DECL_ARGS)
{
if (n->type != ROFFT_BLOCK)
return;
term_newln(p);
if (n->tok != MDOC_Bl || n->norm->Bl.type != LIST_column)
return;
term_tab_set(p, NULL);
term_tab_set(p, "T");
term_tab_set(p, ".5i");
}

static int
termp_xr_pre(DECL_ARGS)
{
if (NULL == (n = n->child))
return 0;

assert(n->type == ROFFT_TEXT);
term_word(p, n->string);

if (NULL == (n = n->next))
return 0;

p->flags |= TERMP_NOSPACE;
term_word(p, "(");
p->flags |= TERMP_NOSPACE;

assert(n->type == ROFFT_TEXT);
term_word(p, n->string);

p->flags |= TERMP_NOSPACE;
term_word(p, ")");

return 0;
}

/*
* This decides how to assert whitespace before any of the SYNOPSIS set
* of macros (which, as in the case of Ft/Fo and Ft/Fn, may contain
* macro combos).
*/
static void
synopsis_pre(struct termp *p, struct roff_node *n)
{
struct roff_node *np;

if ((n->flags & NODE_SYNPRETTY) == 0 ||
(np = roff_node_prev(n)) == NULL)
return;

/*
* If we're the second in a pair of like elements, emit our
* newline and return. UNLESS we're `Fo', `Fn', `Fn', in which
* case we soldier on.
*/
if (np->tok == n->tok &&
MDOC_Ft != n->tok &&
MDOC_Fo != n->tok &&
MDOC_Fn != n->tok) {
term_newln(p);
return;
}

/*
* If we're one of the SYNOPSIS set and non-like pair-wise after
* another (or Fn/Fo, which we've let slip through) then assert
* vertical space, else only newline and move on.
*/
switch (np->tok) {
case MDOC_Fd:
case MDOC_Fn:
case MDOC_Fo:
case MDOC_In:
case MDOC_Vt:
term_vspace(p);
break;
case MDOC_Ft:
if (n->tok != MDOC_Fn && n->tok != MDOC_Fo) {
term_vspace(p);
break;
}
/* FALLTHROUGH */
default:
term_newln(p);
break;
}
}

static int
termp_vt_pre(DECL_ARGS)
{
switch (n->type) {
case ROFFT_ELEM:
return termp_ft_pre(p, pair, meta, n);
case ROFFT_BLOCK:
synopsis_pre(p, n);
return 1;
case ROFFT_HEAD:
return 0;
default:
return termp_under_pre(p, pair, meta, n);
}
}

static int
termp_bold_pre(DECL_ARGS)
{
term_fontpush(p, TERMFONT_BOLD);
return 1;
}

static int
termp_fd_pre(DECL_ARGS)
{
synopsis_pre(p, n);
return termp_bold_pre(p, pair, meta, n);
}

static void
termp_fd_post(DECL_ARGS)
{
term_newln(p);
}

static int
termp_sh_pre(DECL_ARGS)
{
struct roff_node *np;

switch (n->type) {
case ROFFT_BLOCK:
/*
* Vertical space before sections, except
* when the previous section was empty.
*/
if ((np = roff_node_prev(n)) == NULL ||
np->tok != MDOC_Sh ||
(np->body != NULL && np->body->child != NULL))
term_vspace(p);
break;
case ROFFT_HEAD:
return termp_bold_pre(p, pair, meta, n);
case ROFFT_BODY:
p->tcol->offset = term_len(p, p->defindent);
term_tab_set(p, NULL);
term_tab_set(p, "T");
term_tab_set(p, ".5i");
if (n->sec == SEC_AUTHORS)
p->flags &= ~(TERMP_SPLIT|TERMP_NOSPLIT);
break;
default:
break;
}
return 1;
}

static void
termp_sh_post(DECL_ARGS)
{
switch (n->type) {
case ROFFT_HEAD:
term_newln(p);
break;
case ROFFT_BODY:
term_newln(p);
p->tcol->offset = 0;
break;
default:
break;
}
}

static void
termp_lb_post(DECL_ARGS)
{
if (n->sec == SEC_LIBRARY && n->flags & NODE_LINE)
term_newln(p);
}

static int
termp_d1_pre(DECL_ARGS)
{
if (n->type != ROFFT_BLOCK)
return 1;
term_newln(p);
p->tcol->offset += term_len(p, p->defindent + 1);
term_tab_set(p, NULL);
term_tab_set(p, "T");
term_tab_set(p, ".5i");
return 1;
}

static int
termp_ft_pre(DECL_ARGS)
{
synopsis_pre(p, n);
return termp_under_pre(p, pair, meta, n);
}

static int
termp_fn_pre(DECL_ARGS)
{
size_t rmargin = 0;
int pretty;

synopsis_pre(p, n);
pretty = n->flags & NODE_SYNPRETTY;
if ((n = n->child) == NULL)
return 0;

if (pretty) {
rmargin = p->tcol->rmargin;
p->tcol->rmargin = p->tcol->offset + term_len(p, 4);
p->flags |= TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG;
}

assert(n->type == ROFFT_TEXT);
term_fontpush(p, TERMFONT_BOLD);
term_word(p, n->string);
term_fontpop(p);

if (pretty) {
term_flushln(p);
p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG);
p->flags |= TERMP_NOPAD;
p->tcol->offset = p->tcol->rmargin;
p->tcol->rmargin = rmargin;
}

p->flags |= TERMP_NOSPACE;
term_word(p, "(");
p->flags |= TERMP_NOSPACE;

for (n = n->next; n; n = n->next) {
assert(n->type == ROFFT_TEXT);
term_fontpush(p, TERMFONT_UNDER);
if (pretty)
p->flags |= TERMP_NBRWORD;
term_word(p, n->string);
term_fontpop(p);

if (n->next) {
p->flags |= TERMP_NOSPACE;
term_word(p, ",");
}
}

p->flags |= TERMP_NOSPACE;
term_word(p, ")");

if (pretty) {
p->flags |= TERMP_NOSPACE;
term_word(p, ";");
term_flushln(p);
}
return 0;
}

static int
termp_fa_pre(DECL_ARGS)
{
const struct roff_node *nn;

if (n->parent->tok != MDOC_Fo)
return termp_under_pre(p, pair, meta, n);

for (nn = n->child; nn != NULL; nn = nn->next) {
term_fontpush(p, TERMFONT_UNDER);
p->flags |= TERMP_NBRWORD;
term_word(p, nn->string);
term_fontpop(p);
if (nn->next != NULL) {
p->flags |= TERMP_NOSPACE;
term_word(p, ",");
}
}
if (n->child != NULL &&
(nn = roff_node_next(n)) != NULL &&
nn->tok == MDOC_Fa) {
p->flags |= TERMP_NOSPACE;
term_word(p, ",");
}
return 0;
}

static int
termp_bd_pre(DECL_ARGS)
{
int offset;

if (n->type == ROFFT_BLOCK) {
print_bvspace(p, n, n);
return 1;
} else if (n->type == ROFFT_HEAD)
return 0;

/* Handle the -offset argument. */

if (n->norm->Bd.offs == NULL ||
! strcmp(n->norm->Bd.offs, "left"))
/* nothing */;
else if ( ! strcmp(n->norm->Bd.offs, "indent"))
p->tcol->offset += term_len(p, p->defindent + 1);
else if ( ! strcmp(n->norm->Bd.offs, "indent-two"))
p->tcol->offset += term_len(p, (p->defindent + 1) * 2);
else {
offset = a2width(p, n->norm->Bd.offs);
if (offset < 0 && (size_t)(-offset) > p->tcol->offset)
p->tcol->offset = 0;
else if (offset < SHRT_MAX)
p->tcol->offset += offset;
}

switch (n->norm->Bd.type) {
case DISP_literal:
term_tab_set(p, NULL);
term_tab_set(p, "T");
term_tab_set(p, "8n");
break;
case DISP_centered:
p->flags |= TERMP_CENTER;
break;
default:
break;
}
return 1;
}

static void
termp_bd_post(DECL_ARGS)
{
if (n->type != ROFFT_BODY)
return;
if (n->norm->Bd.type == DISP_unfilled ||
n->norm->Bd.type == DISP_literal)
p->flags |= TERMP_BRNEVER;
p->flags |= TERMP_NOSPACE;
term_newln(p);
p->flags &= ~TERMP_BRNEVER;
if (n->norm->Bd.type == DISP_centered)
p->flags &= ~TERMP_CENTER;
}

static int
termp_xx_pre(DECL_ARGS)
{
if ((n->aux = p->flags & TERMP_PREKEEP) == 0)
p->flags |= TERMP_PREKEEP;
return 1;
}

static void
termp_xx_post(DECL_ARGS)
{
if (n->aux == 0)
p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
}

static void
termp_pf_post(DECL_ARGS)
{
if (n->next != NULL && (n->next->flags & NODE_LINE) == 0)
p->flags |= TERMP_NOSPACE;
}

static int
termp_ss_pre(DECL_ARGS)
{
switch (n->type) {
case ROFFT_BLOCK:
if (roff_node_prev(n) == NULL)
term_newln(p);
else
term_vspace(p);
break;
case ROFFT_HEAD:
p->tcol->offset = term_len(p, (p->defindent+1)/2);
return termp_bold_pre(p, pair, meta, n);
case ROFFT_BODY:
p->tcol->offset = term_len(p, p->defindent);
term_tab_set(p, NULL);
term_tab_set(p, "T");
term_tab_set(p, ".5i");
break;
default:
break;
}
return 1;
}

static void
termp_ss_post(DECL_ARGS)
{
if (n->type == ROFFT_HEAD || n->type == ROFFT_BODY)
term_newln(p);
}

static int
termp_in_pre(DECL_ARGS)
{
synopsis_pre(p, n);
if (n->flags & NODE_SYNPRETTY && n->flags & NODE_LINE) {
term_fontpush(p, TERMFONT_BOLD);
term_word(p, "#include");
term_word(p, "<");
} else {
term_word(p, "<");
term_fontpush(p, TERMFONT_UNDER);
}
p->flags |= TERMP_NOSPACE;
return 1;
}

static void
termp_in_post(DECL_ARGS)
{
if (n->flags & NODE_SYNPRETTY)
term_fontpush(p, TERMFONT_BOLD);
p->flags |= TERMP_NOSPACE;
term_word(p, ">");
if (n->flags & NODE_SYNPRETTY)
term_fontpop(p);
}

static int
termp_pp_pre(DECL_ARGS)
{
term_vspace(p);
if (n->flags & NODE_ID)
term_tag_write(n, p->line);
return 0;
}

static int
termp_skip_pre(DECL_ARGS)
{
return 0;
}

static int
termp_quote_pre(DECL_ARGS)
{
if (n->type != ROFFT_BODY && n->type != ROFFT_ELEM)
return 1;

switch (n->tok) {
case MDOC_Ao:
case MDOC_Aq:
term_word(p, n->child != NULL && n->child->next == NULL &&
n->child->tok == MDOC_Mt ? "<" : "\\(la");
break;
case MDOC_Bro:
case MDOC_Brq:
term_word(p, "{");
break;
case MDOC_Oo:
case MDOC_Op:
case MDOC_Bo:
case MDOC_Bq:
term_word(p, "[");
break;
case MDOC__T:
/* FALLTHROUGH */
case MDOC_Do:
case MDOC_Dq:
term_word(p, "\\(lq");
break;
case MDOC_En:
if (NULL == n->norm->Es ||
NULL == n->norm->Es->child)
return 1;
term_word(p, n->norm->Es->child->string);
break;
case MDOC_Po:
case MDOC_Pq:
term_word(p, "(");
break;
case MDOC_Qo:
case MDOC_Qq:
term_word(p, "\"");
break;
case MDOC_Ql:
case MDOC_So:
case MDOC_Sq:
term_word(p, "\\(oq");
break;
default:
abort();
}

p->flags |= TERMP_NOSPACE;
return 1;
}

static void
termp_quote_post(DECL_ARGS)
{

if (n->type != ROFFT_BODY && n->type != ROFFT_ELEM)
return;

p->flags |= TERMP_NOSPACE;

switch (n->tok) {
case MDOC_Ao:
case MDOC_Aq:
term_word(p, n->child != NULL && n->child->next == NULL &&
n->child->tok == MDOC_Mt ? ">" : "\\(ra");
break;
case MDOC_Bro:
case MDOC_Brq:
term_word(p, "}");
break;
case MDOC_Oo:
case MDOC_Op:
case MDOC_Bo:
case MDOC_Bq:
term_word(p, "]");
break;
case MDOC__T:
/* FALLTHROUGH */
case MDOC_Do:
case MDOC_Dq:
term_word(p, "\\(rq");
break;
case MDOC_En:
if (n->norm->Es == NULL ||
n->norm->Es->child == NULL ||
n->norm->Es->child->next == NULL)
p->flags &= ~TERMP_NOSPACE;
else
term_word(p, n->norm->Es->child->next->string);
break;
case MDOC_Po:
case MDOC_Pq:
term_word(p, ")");
break;
case MDOC_Qo:
case MDOC_Qq:
term_word(p, "\"");
break;
case MDOC_Ql:
case MDOC_So:
case MDOC_Sq:
term_word(p, "\\(cq");
break;
default:
abort();
}
}

static int
termp_eo_pre(DECL_ARGS)
{

if (n->type != ROFFT_BODY)
return 1;

if (n->end == ENDBODY_NOT &&
n->parent->head->child == NULL &&
n->child != NULL &&
n->child->end != ENDBODY_NOT)
term_word(p, "\\&");
else if (n->end != ENDBODY_NOT ? n->child != NULL :
n->parent->head->child != NULL && (n->child != NULL ||
(n->parent->tail != NULL && n->parent->tail->child != NULL)))
p->flags |= TERMP_NOSPACE;

return 1;
}

static void
termp_eo_post(DECL_ARGS)
{
int body, tail;

if (n->type != ROFFT_BODY)
return;

if (n->end != ENDBODY_NOT) {
p->flags &= ~TERMP_NOSPACE;
return;
}

body = n->child != NULL || n->parent->head->child != NULL;
tail = n->parent->tail != NULL && n->parent->tail->child != NULL;

if (body && tail)
p->flags |= TERMP_NOSPACE;
else if ( ! (body || tail))
term_word(p, "\\&");
else if ( ! tail)
p->flags &= ~TERMP_NOSPACE;
}

static int
termp_fo_pre(DECL_ARGS)
{
size_t rmargin;

switch (n->type) {
case ROFFT_BLOCK:
synopsis_pre(p, n);
return 1;
case ROFFT_BODY:
rmargin = p->tcol->rmargin;
if (n->flags & NODE_SYNPRETTY) {
p->tcol->rmargin = p->tcol->offset + term_len(p, 4);
p->flags |= TERMP_NOBREAK | TERMP_BRIND |
TERMP_HANG;
}
p->flags |= TERMP_NOSPACE;
term_word(p, "(");
p->flags |= TERMP_NOSPACE;
if (n->flags & NODE_SYNPRETTY) {
term_flushln(p);
p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND |
TERMP_HANG);
p->flags |= TERMP_NOPAD;
p->tcol->offset = p->tcol->rmargin;
p->tcol->rmargin = rmargin;
}
return 1;
default:
return termp_bold_pre(p, pair, meta, n);
}
}

static void
termp_fo_post(DECL_ARGS)
{
if (n->type != ROFFT_BODY)
return;

p->flags |= TERMP_NOSPACE;
term_word(p, ")");

if (n->flags & NODE_SYNPRETTY) {
p->flags |= TERMP_NOSPACE;
term_word(p, ";");
term_flushln(p);
}
}

static int
termp_bf_pre(DECL_ARGS)
{
switch (n->type) {
case ROFFT_HEAD:
return 0;
case ROFFT_BODY:
break;
default:
return 1;
}
switch (n->norm->Bf.font) {
case FONT_Em:
return termp_under_pre(p, pair, meta, n);
case FONT_Sy:
return termp_bold_pre(p, pair, meta, n);
default:
return termp_li_pre(p, pair, meta, n);
}
}

static int
termp_sm_pre(DECL_ARGS)
{
if (n->child == NULL)
p->flags ^= TERMP_NONOSPACE;
else if (strcmp(n->child->string, "on") == 0)
p->flags &= ~TERMP_NONOSPACE;
else
p->flags |= TERMP_NONOSPACE;

if (p->col && ! (TERMP_NONOSPACE & p->flags))
p->flags &= ~TERMP_NOSPACE;

return 0;
}

static int
termp_ap_pre(DECL_ARGS)
{
p->flags |= TERMP_NOSPACE;
term_word(p, "'");
p->flags |= TERMP_NOSPACE;
return 1;
}

static void
termp____post(DECL_ARGS)
{
struct roff_node *nn;

/*
* Handle lists of authors. In general, print each followed by
* a comma. Don't print the comma if there are only two
* authors.
*/
if (n->tok == MDOC__A &&
(nn = roff_node_next(n)) != NULL && nn->tok == MDOC__A &&
((nn = roff_node_next(nn)) == NULL || nn->tok != MDOC__A) &&
((nn = roff_node_prev(n)) == NULL || nn->tok != MDOC__A))
return;

/* TODO: %U. */

if (n->parent == NULL || n->parent->tok != MDOC_Rs)
return;

p->flags |= TERMP_NOSPACE;
if (roff_node_next(n) == NULL) {
term_word(p, ".");
p->flags |= TERMP_SENTENCE;
} else
term_word(p, ",");
}

static int
termp_li_pre(DECL_ARGS)
{
term_fontpush(p, TERMFONT_NONE);
return 1;
}

static int
termp_lk_pre(DECL_ARGS)
{
const struct roff_node *link, *descr, *punct;

if ((link = n->child) == NULL)
return 0;

/* Find beginning of trailing punctuation. */
punct = n->last;
while (punct != link && punct->flags & NODE_DELIMC)
punct = punct->prev;
punct = punct->next;

/* Link text. */
if ((descr = link->next) != NULL && descr != punct) {
term_fontpush(p, TERMFONT_UNDER);
while (descr != punct) {
if (descr->flags & (NODE_DELIMC | NODE_DELIMO))
p->flags |= TERMP_NOSPACE;
term_word(p, descr->string);
descr = descr->next;
}
term_fontpop(p);
p->flags |= TERMP_NOSPACE;
term_word(p, ":");
}

/* Link target. */
term_fontpush(p, TERMFONT_BOLD);
term_word(p, link->string);
term_fontpop(p);

/* Trailing punctuation. */
while (punct != NULL) {
p->flags |= TERMP_NOSPACE;
term_word(p, punct->string);
punct = punct->next;
}
return 0;
}

static int
termp_bk_pre(DECL_ARGS)
{
switch (n->type) {
case ROFFT_BLOCK:
break;
case ROFFT_HEAD:
return 0;
case ROFFT_BODY:
if (n->parent->args != NULL || n->prev->child == NULL)
p->flags |= TERMP_PREKEEP;
break;
default:
abort();
}
return 1;
}

static void
termp_bk_post(DECL_ARGS)
{
if (n->type == ROFFT_BODY)
p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
}

/*
* If we are in an `Rs' and there is a journal present,
* then quote us instead of underlining us (for disambiguation).
*/
static void
termp__t_post(DECL_ARGS)
{
if (n->parent != NULL && n->parent->tok == MDOC_Rs &&
n->parent->norm->Rs.quote_T)
termp_quote_post(p, pair, meta, n);
termp____post(p, pair, meta, n);
}

static int
termp__t_pre(DECL_ARGS)
{
if (n->parent != NULL && n->parent->tok == MDOC_Rs &&
n->parent->norm->Rs.quote_T)
return termp_quote_pre(p, pair, meta, n);
else
return termp_under_pre(p, pair, meta, n);
}

static int
termp_under_pre(DECL_ARGS)
{
term_fontpush(p, TERMFONT_UNDER);
return 1;
}

static int
termp_abort_pre(DECL_ARGS)
{
abort();
}