-/* $Id: term.c,v 1.69 2009/03/23 09:42:43 kristaps Exp $ */
+/* $Id: term.c,v 1.253 2015/10/12 00:08:16 schwarze Exp $ */
/*
- * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@openbsd.org>
+ * Copyright (c) 2008, 2009, 2010, 2011 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.
+ * 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.
+ * 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 <sys/types.h>
-
-#include <assert.h>
-#include <ctype.h>
-#include <err.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "term.h"
-
-/*
- * Performs actions on nodes of the abstract syntax tree. Both pre- and
- * post-fix operations are defined here.
- */
-
-/* FIXME: macro arguments can be escaped. */
-
-#define TTYPE_PROG 0
-#define TTYPE_CMD_FLAG 1
-#define TTYPE_CMD_ARG 2
-#define TTYPE_SECTION 3
-#define TTYPE_FUNC_DECL 4
-#define TTYPE_VAR_DECL 5
-#define TTYPE_FUNC_TYPE 6
-#define TTYPE_FUNC_NAME 7
-#define TTYPE_FUNC_ARG 8
-#define TTYPE_LINK 9
-#define TTYPE_SSECTION 10
-#define TTYPE_FILE 11
-#define TTYPE_EMPH 12
-#define TTYPE_CONFIG 13
-#define TTYPE_CMD 14
-#define TTYPE_INCLUDE 15
-#define TTYPE_SYMB 16
-#define TTYPE_SYMBOL 17
-#define TTYPE_DIAG 18
-#define TTYPE_LINK_ANCHOR 19
-#define TTYPE_LINK_TEXT 20
-#define TTYPE_REF_JOURNAL 21
-#define TTYPE_LIST 22
-#define TTYPE_NMAX 23
-
-/*
- * These define "styles" for element types, like command arguments or
- * executable names. This is useful when multiple macros must decorate
- * the same thing (like .Ex -std cmd and .Nm cmd).
- */
-
-/* TODO: abstract this into mdocterm.c. */
-
-const int ttypes[TTYPE_NMAX] = {
- TERMP_BOLD, /* TTYPE_PROG */
- TERMP_BOLD, /* TTYPE_CMD_FLAG */
- TERMP_UNDER, /* TTYPE_CMD_ARG */
- TERMP_BOLD, /* TTYPE_SECTION */
- TERMP_BOLD, /* TTYPE_FUNC_DECL */
- TERMP_UNDER, /* TTYPE_VAR_DECL */
- TERMP_UNDER, /* TTYPE_FUNC_TYPE */
- TERMP_BOLD, /* TTYPE_FUNC_NAME */
- TERMP_UNDER, /* TTYPE_FUNC_ARG */
- TERMP_UNDER, /* TTYPE_LINK */
- TERMP_BOLD, /* TTYPE_SSECTION */
- TERMP_UNDER, /* TTYPE_FILE */
- TERMP_UNDER, /* TTYPE_EMPH */
- TERMP_BOLD, /* TTYPE_CONFIG */
- TERMP_BOLD, /* TTYPE_CMD */
- TERMP_BOLD, /* TTYPE_INCLUDE */
- TERMP_BOLD, /* TTYPE_SYMB */
- TERMP_BOLD, /* TTYPE_SYMBOL */
- TERMP_BOLD, /* TTYPE_DIAG */
- TERMP_UNDER, /* TTYPE_LINK_ANCHOR */
- TERMP_BOLD, /* TTYPE_LINK_TEXT */
- TERMP_UNDER, /* TTYPE_REF_JOURNAL */
- TERMP_BOLD /* TTYPE_LIST */
-};
-
-static int arg_hasattr(int, const struct mdoc_node *);
-static int arg_getattrs(const int *, int *, size_t,
- const struct mdoc_node *);
-static int arg_getattr(int, const struct mdoc_node *);
-static size_t arg_offset(const struct mdoc_argv *);
-static size_t arg_width(const struct mdoc_argv *, int);
-static int arg_listtype(const struct mdoc_node *);
-static int fmt_block_vspace(struct termp *,
- const struct mdoc_node *,
- const struct mdoc_node *);
-
-/*
- * What follows describes prefix and postfix operations for the abstract
- * syntax tree descent.
- */
-
-#define DECL_ARGS \
- struct termp *p, \
- struct termpair *pair, \
- const struct mdoc_meta *meta, \
- const struct mdoc_node *node
-
-#define DECL_PRE(name) \
-static int name##_pre(DECL_ARGS)
-#define DECL_POST(name) \
-static void name##_post(DECL_ARGS)
-#define DECL_PREPOST(name) \
-DECL_PRE(name); \
-DECL_POST(name);
-
-DECL_PREPOST(termp__t);
-DECL_PREPOST(termp_aq);
-DECL_PREPOST(termp_bd);
-DECL_PREPOST(termp_bq);
-DECL_PREPOST(termp_brq);
-DECL_PREPOST(termp_d1);
-DECL_PREPOST(termp_dq);
-DECL_PREPOST(termp_fd);
-DECL_PREPOST(termp_fn);
-DECL_PREPOST(termp_fo);
-DECL_PREPOST(termp_ft);
-DECL_PREPOST(termp_in);
-DECL_PREPOST(termp_it);
-DECL_PREPOST(termp_lb);
-DECL_PREPOST(termp_op);
-DECL_PREPOST(termp_pf);
-DECL_PREPOST(termp_pq);
-DECL_PREPOST(termp_qq);
-DECL_PREPOST(termp_sh);
-DECL_PREPOST(termp_ss);
-DECL_PREPOST(termp_sq);
-DECL_PREPOST(termp_vt);
-
-DECL_PRE(termp__j);
-DECL_PRE(termp_ap);
-DECL_PRE(termp_ar);
-DECL_PRE(termp_at);
-DECL_PRE(termp_bf);
-DECL_PRE(termp_bsx);
-DECL_PRE(termp_bt);
-DECL_PRE(termp_cd);
-DECL_PRE(termp_cm);
-DECL_PRE(termp_dx);
-DECL_PRE(termp_em);
-DECL_PRE(termp_ex);
-DECL_PRE(termp_fa);
-DECL_PRE(termp_fl);
-DECL_PRE(termp_fx);
-DECL_PRE(termp_ic);
-DECL_PRE(termp_lk);
-DECL_PRE(termp_ms);
-DECL_PRE(termp_mt);
-DECL_PRE(termp_nd);
-DECL_PRE(termp_nm);
-DECL_PRE(termp_ns);
-DECL_PRE(termp_nx);
-DECL_PRE(termp_ox);
-DECL_PRE(termp_pa);
-DECL_PRE(termp_pp);
-DECL_PRE(termp_rs);
-DECL_PRE(termp_rv);
-DECL_PRE(termp_sm);
-DECL_PRE(termp_st);
-DECL_PRE(termp_sx);
-DECL_PRE(termp_sy);
-DECL_PRE(termp_ud);
-DECL_PRE(termp_ux);
-DECL_PRE(termp_va);
-DECL_PRE(termp_xr);
-
-DECL_POST(termp___);
-DECL_POST(termp_bl);
-DECL_POST(termp_bx);
-
-const struct termact __termacts[MDOC_MAX] = {
- { NULL, NULL }, /* \" */
- { 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_d1_post }, /* D1 */
- { termp_d1_pre, termp_d1_post }, /* Dl */
- { termp_bd_pre, termp_bd_post }, /* Bd */
- { NULL, NULL }, /* Ed */
- { NULL, termp_bl_post }, /* Bl */
- { NULL, NULL }, /* El */
- { termp_it_pre, termp_it_post }, /* It */
- { NULL, NULL }, /* Ad */
- { NULL, NULL }, /* An */
- { termp_ar_pre, NULL }, /* Ar */
- { termp_cd_pre, NULL }, /* Cd */
- { termp_cm_pre, NULL }, /* Cm */
- { NULL, 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, termp_fn_post }, /* Fn */
- { termp_ft_pre, termp_ft_post }, /* Ft */
- { termp_ic_pre, NULL }, /* Ic */
- { termp_in_pre, termp_in_post }, /* In */
- { NULL, NULL }, /* Li */
- { termp_nd_pre, NULL }, /* Nd */
- { termp_nm_pre, NULL }, /* Nm */
- { termp_op_pre, termp_op_post }, /* Op */
- { NULL, NULL }, /* Ot */
- { termp_pa_pre, NULL }, /* Pa */
- { termp_rv_pre, NULL }, /* Rv */
- { termp_st_pre, NULL }, /* St */
- { termp_va_pre, NULL }, /* Va */
- { termp_vt_pre, termp_vt_post }, /* Vt */
- { termp_xr_pre, NULL }, /* Xr */
- { NULL, termp____post }, /* %A */
- { NULL, termp____post }, /* %B */
- { NULL, termp____post }, /* %D */
- { NULL, termp____post }, /* %I */
- { termp__j_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_aq_pre, termp_aq_post }, /* Ao */
- { termp_aq_pre, termp_aq_post }, /* Aq */
- { termp_at_pre, NULL }, /* At */
- { NULL, NULL }, /* Bc */
- { termp_bf_pre, NULL }, /* Bf */
- { termp_bq_pre, termp_bq_post }, /* Bo */
- { termp_bq_pre, termp_bq_post }, /* Bq */
- { termp_bsx_pre, NULL }, /* Bsx */
- { NULL, termp_bx_post }, /* Bx */
- { NULL, NULL }, /* Db */
- { NULL, NULL }, /* Dc */
- { termp_dq_pre, termp_dq_post }, /* Do */
- { termp_dq_pre, termp_dq_post }, /* Dq */
- { NULL, NULL }, /* Ec */
- { NULL, NULL }, /* Ef */
- { termp_em_pre, NULL }, /* Em */
- { NULL, NULL }, /* Eo */
- { termp_fx_pre, NULL }, /* Fx */
- { termp_ms_pre, NULL }, /* Ms */
- { NULL, NULL }, /* No */
- { termp_ns_pre, NULL }, /* Ns */
- { termp_nx_pre, NULL }, /* Nx */
- { termp_ox_pre, NULL }, /* Ox */
- { NULL, NULL }, /* Pc */
- { termp_pf_pre, termp_pf_post }, /* Pf */
- { termp_pq_pre, termp_pq_post }, /* Po */
- { termp_pq_pre, termp_pq_post }, /* Pq */
- { NULL, NULL }, /* Qc */
- { termp_sq_pre, termp_sq_post }, /* Ql */
- { termp_qq_pre, termp_qq_post }, /* Qo */
- { termp_qq_pre, termp_qq_post }, /* Qq */
- { NULL, NULL }, /* Re */
- { termp_rs_pre, NULL }, /* Rs */
- { NULL, NULL }, /* Sc */
- { termp_sq_pre, termp_sq_post }, /* So */
- { termp_sq_pre, termp_sq_post }, /* Sq */
- { termp_sm_pre, NULL }, /* Sm */
- { termp_sx_pre, NULL }, /* Sx */
- { termp_sy_pre, NULL }, /* Sy */
- { NULL, NULL }, /* Tn */
- { termp_ux_pre, NULL }, /* Ux */
- { NULL, NULL }, /* Xc */
- { NULL, NULL }, /* Xo */
- { termp_fo_pre, termp_fo_post }, /* Fo */
- { NULL, NULL }, /* Fc */
- { termp_op_pre, termp_op_post }, /* Oo */
- { NULL, NULL }, /* Oc */
- { NULL, NULL }, /* Bk */
- { NULL, NULL }, /* Ek */
- { termp_bt_pre, NULL }, /* Bt */
- { NULL, NULL }, /* Hf */
- { NULL, NULL }, /* Fr */
- { termp_ud_pre, NULL }, /* Ud */
- { termp_lb_pre, termp_lb_post }, /* Lb */
- { termp_ap_pre, NULL }, /* Lb */
- { termp_pp_pre, NULL }, /* Pp */
- { termp_lk_pre, NULL }, /* Lk */
- { termp_mt_pre, NULL }, /* Mt */
- { termp_brq_pre, termp_brq_post }, /* Brq */
- { termp_brq_pre, termp_brq_post }, /* Bro */
- { NULL, NULL }, /* Brc */
- { NULL, NULL }, /* %C */
- { NULL, NULL }, /* Es */
- { NULL, NULL }, /* En */
- { termp_dx_pre, NULL }, /* Dx */
- { NULL, NULL }, /* %Q */
-};
-
-const struct termact *termacts = __termacts;
-
-
-static size_t
-arg_width(const struct mdoc_argv *arg, int pos)
-{
- size_t v;
- int i, len;
-
- assert(pos < (int)arg->sz && pos >= 0);
- assert(arg->value[pos]);
- if (0 == strcmp(arg->value[pos], "indent"))
- return(INDENT);
- if (0 == strcmp(arg->value[pos], "indent-two"))
- return(INDENT * 2);
-
- if (0 == (len = (int)strlen(arg->value[pos])))
- return(0);
-
- for (i = 0; i < len - 1; i++)
- if ( ! isdigit((u_char)arg->value[pos][i]))
- break;
-
- if (i == len - 1) {
- if ('n' == arg->value[pos][len - 1]) {
- v = (size_t)atoi(arg->value[pos]);
- return(v);
- }
-
- }
- return(strlen(arg->value[pos]) + 1);
-}
-
-
-static int
-arg_listtype(const struct mdoc_node *n)
-{
- int i, len;
-
- assert(MDOC_BLOCK == n->type);
-
- len = (int)(n->args ? n->args->argc : 0);
-
- for (i = 0; i < len; i++)
- switch (n->args->argv[i].arg) {
- case (MDOC_Bullet):
- /* FALLTHROUGH */
- case (MDOC_Dash):
- /* FALLTHROUGH */
- case (MDOC_Enum):
- /* FALLTHROUGH */
- case (MDOC_Hyphen):
- /* FALLTHROUGH */
- case (MDOC_Tag):
- /* FALLTHROUGH */
- case (MDOC_Inset):
- /* FALLTHROUGH */
- case (MDOC_Diag):
- /* FALLTHROUGH */
- case (MDOC_Item):
- /* FALLTHROUGH */
- case (MDOC_Column):
- /* FALLTHROUGH */
- case (MDOC_Ohang):
- return(n->args->argv[i].arg);
- default:
- break;
- }
-
- errx(1, "list type not supported");
- /* NOTREACHED */
-}
-
-
-static size_t
-arg_offset(const struct mdoc_argv *arg)
-{
-
- /* TODO */
- assert(*arg->value);
- if (0 == strcmp(*arg->value, "indent"))
- return(INDENT);
- if (0 == strcmp(*arg->value, "indent-two"))
- return(INDENT * 2);
- return(strlen(*arg->value));
-}
-
-
-static int
-arg_hasattr(int arg, const struct mdoc_node *n)
-{
-
- return(-1 != arg_getattr(arg, n));
-}
-
-
-static int
-arg_getattr(int v, const struct mdoc_node *n)
-{
- int val;
-
- return(arg_getattrs(&v, &val, 1, n) ? val : -1);
-}
-
-
-static int
-arg_getattrs(const int *keys, int *vals,
- size_t sz, const struct mdoc_node *n)
-{
- int i, j, k;
-
- if (NULL == n->args)
- return(0);
-
- for (k = i = 0; i < (int)n->args->argc; i++)
- for (j = 0; j < (int)sz; j++)
- if (n->args->argv[i].arg == keys[j]) {
- vals[j] = i;
- k++;
- }
- return(k);
-}
-
-
-/* ARGSUSED */
-static int
-fmt_block_vspace(struct termp *p,
- const struct mdoc_node *bl,
- const struct mdoc_node *node)
-{
- const struct mdoc_node *n;
-
- term_newln(p);
-
- if (arg_hasattr(MDOC_Compact, bl))
- return(1);
-
- for (n = node; n; n = n->parent) {
- if (MDOC_BLOCK != n->type)
- continue;
- if (MDOC_Ss == n->tok)
- break;
- if (MDOC_Sh == n->tok)
- break;
- if (NULL == n->prev)
- continue;
- term_vspace(p);
- break;
- }
-
- return(1);
-}
-
-
-/* ARGSUSED */
-static int
-termp_dq_pre(DECL_ARGS)
-{
-
- if (MDOC_BODY != node->type)
- return(1);
-
- term_word(p, "\\(lq");
- p->flags |= TERMP_NOSPACE;
- return(1);
-}
-
-
-/* ARGSUSED */
-static void
-termp_dq_post(DECL_ARGS)
-{
-
- if (MDOC_BODY != node->type)
- return;
-
- p->flags |= TERMP_NOSPACE;
- term_word(p, "\\(rq");
-}
-
-
-/* ARGSUSED */
-static int
-termp_it_pre(DECL_ARGS)
-{
- const struct mdoc_node *bl, *n;
- char buf[7];
- int i, type, keys[3], vals[3];
- size_t width, offset;
-
- if (MDOC_BLOCK == node->type)
- return(fmt_block_vspace(p, node->parent->parent, node));
-
- bl = node->parent->parent->parent;
-
- /* Save parent attributes. */
-
- pair->offset = p->offset;
- pair->rmargin = p->rmargin;
- pair->flag = p->flags;
-
- /* Get list width and offset. */
-
- keys[0] = MDOC_Width;
- keys[1] = MDOC_Offset;
- keys[2] = MDOC_Column;
-
- vals[0] = vals[1] = vals[2] = -1;
-
- width = offset = 0;
-
- (void)arg_getattrs(keys, vals, 3, bl);
-
- type = arg_listtype(bl);
-
- /* Calculate real width and offset. */
-
- switch (type) {
- case (MDOC_Column):
- if (MDOC_BODY == node->type)
- break;
- for (i = 0, n = node->prev; n; n = n->prev, i++)
- offset += arg_width
- (&bl->args->argv[vals[2]], i);
- assert(i < (int)bl->args->argv[vals[2]].sz);
- width = arg_width(&bl->args->argv[vals[2]], i);
- if (vals[1] >= 0)
- offset += arg_offset(&bl->args->argv[vals[1]]);
- break;
- default:
- if (vals[0] >= 0)
- width = arg_width(&bl->args->argv[vals[0]], 0);
- if (vals[1] >= 0)
- offset = arg_offset(&bl->args->argv[vals[1]]);
- break;
- }
-
- /*
- * List-type can override the width in the case of fixed-head
- * values (bullet, dash/hyphen, enum). Tags need a non-zero
- * offset.
- */
-
- switch (type) {
- case (MDOC_Bullet):
- /* FALLTHROUGH */
- case (MDOC_Dash):
- /* FALLTHROUGH */
- case (MDOC_Enum):
- /* FALLTHROUGH */
- case (MDOC_Hyphen):
- if (width < 4)
- width = 4;
- break;
- case (MDOC_Tag):
- if (0 == width)
- width = 10;
- break;
- default:
- break;
- }
-
- /*
- * Whitespace control. Inset bodies need an initial space.
- */
-
- switch (type) {
- case (MDOC_Diag):
- /* FALLTHROUGH */
- case (MDOC_Inset):
- if (MDOC_BODY == node->type)
- p->flags &= ~TERMP_NOSPACE;
- else
- p->flags |= TERMP_NOSPACE;
- break;
- default:
- p->flags |= TERMP_NOSPACE;
- break;
- }
-
- /*
- * Style flags. Diagnostic heads need TTYPE_DIAG.
- */
-
- switch (type) {
- case (MDOC_Diag):
- if (MDOC_HEAD == node->type)
- p->flags |= ttypes[TTYPE_DIAG];
- break;
- default:
- break;
- }
-
- /*
- * Pad and break control. This is the tricker part. Lists with
- * set right-margins for the head get TERMP_NOBREAK because, if
- * they overrun the margin, they wrap to the new margin.
- * Correspondingly, the body for these types don't left-pad, as
- * the head will pad out to to the right.
- */
-
- switch (type) {
- case (MDOC_Bullet):
- /* FALLTHROUGH */
- case (MDOC_Dash):
- /* FALLTHROUGH */
- case (MDOC_Enum):
- /* FALLTHROUGH */
- case (MDOC_Hyphen):
- /* FALLTHROUGH */
- case (MDOC_Tag):
- if (MDOC_HEAD == node->type)
- p->flags |= TERMP_NOBREAK;
- else
- p->flags |= TERMP_NOLPAD;
- if (MDOC_HEAD == node->type && MDOC_Tag == type)
- if (NULL == node->next ||
- NULL == node->next->child)
- p->flags |= TERMP_NONOBREAK;
- break;
- case (MDOC_Column):
- if (MDOC_HEAD == node->type) {
- assert(node->next);
- if (MDOC_BODY == node->next->type)
- p->flags &= ~TERMP_NOBREAK;
- else
- p->flags |= TERMP_NOBREAK;
- if (node->prev)
- p->flags |= TERMP_NOLPAD;
- }
- break;
- case (MDOC_Diag):
- if (MDOC_HEAD == node->type)
- p->flags |= TERMP_NOBREAK;
- 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->offset += offset;
-
- switch (type) {
- case (MDOC_Bullet):
- /* FALLTHROUGH */
- case (MDOC_Dash):
- /* FALLTHROUGH */
- case (MDOC_Enum):
- /* FALLTHROUGH */
- case (MDOC_Hyphen):
- /* FALLTHROUGH */
- case (MDOC_Tag):
- if (MDOC_HEAD == node->type)
- p->rmargin = p->offset + width;
- else
- p->offset += width;
- break;
- case (MDOC_Column):
- p->rmargin = p->offset + width;
- break;
- default:
- break;
- }
-
- /*
- * The dash, hyphen, bullet and enum lists all have a special
- * HEAD character. Print it now.
- */
-
- if (MDOC_HEAD == node->type)
- switch (type) {
- case (MDOC_Bullet):
- term_word(p, "\\[bu]");
- break;
- case (MDOC_Dash):
- /* FALLTHROUGH */
- case (MDOC_Hyphen):
- term_word(p, "\\-");
- break;
- case (MDOC_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 (MDOC_Bullet):
- /* FALLTHROUGH */
- case (MDOC_Item):
- /* FALLTHROUGH */
- case (MDOC_Dash):
- /* FALLTHROUGH */
- case (MDOC_Hyphen):
- /* FALLTHROUGH */
- case (MDOC_Enum):
- if (MDOC_HEAD == node->type)
- return(0);
- break;
- case (MDOC_Column):
- if (MDOC_BODY == node->type)
- return(0);
- break;
- default:
- break;
- }
-
- return(1);
-}
-
-
-/* ARGSUSED */
-static void
-termp_it_post(DECL_ARGS)
-{
- int type;
-
- if (MDOC_BODY != node->type && MDOC_HEAD != node->type)
- return;
-
- type = arg_listtype(node->parent->parent->parent);
-
- switch (type) {
- case (MDOC_Diag):
- /* FALLTHROUGH */
- case (MDOC_Item):
- /* FALLTHROUGH */
- case (MDOC_Inset):
- if (MDOC_BODY == node->type)
- term_flushln(p);
- break;
- case (MDOC_Column):
- if (MDOC_HEAD == node->type)
- term_flushln(p);
- break;
- default:
- term_flushln(p);
- break;
- }
-
- p->offset = pair->offset;
- p->rmargin = pair->rmargin;
- p->flags = pair->flag;
-}
-
-
-/* ARGSUSED */
-static int
-termp_nm_pre(DECL_ARGS)
-{
-
- if (SEC_SYNOPSIS == node->sec)
- term_newln(p);
-
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_PROG]);
- if (NULL == node->child)
- term_word(p, meta->name);
-
- return(1);
-}
-
-
-/* ARGSUSED */
-static int
-termp_fl_pre(DECL_ARGS)
-{
-
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_CMD_FLAG]);
- term_word(p, "\\-");
- p->flags |= TERMP_NOSPACE;
- return(1);
-}
-
-
-/* ARGSUSED */
-static int
-termp_ar_pre(DECL_ARGS)
-{
-
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_CMD_ARG]);
- return(1);
-}
-
-
-/* ARGSUSED */
-static int
-termp_ns_pre(DECL_ARGS)
-{
-
- p->flags |= TERMP_NOSPACE;
- return(1);
-}
-
-
-/* ARGSUSED */
-static int
-termp_pp_pre(DECL_ARGS)
-{
-
- term_vspace(p);
- return(1);
-}
-
-
-/* ARGSUSED */
-static int
-termp_st_pre(DECL_ARGS)
-{
- const char *cp;
-
- if (node->child && (cp = mdoc_a2st(node->child->string)))
- term_word(p, cp);
- return(0);
-}
-
-
-/* ARGSUSED */
-static int
-termp_rs_pre(DECL_ARGS)
-{
-
- if (MDOC_BLOCK == node->type && node->prev)
- term_vspace(p);
- return(1);
-}
-
-
-/* ARGSUSED */
-static int
-termp_rv_pre(DECL_ARGS)
-{
- int i;
-
- if (-1 == (i = arg_getattr(MDOC_Std, node)))
- errx(1, "expected -std argument");
- if (1 != node->args->argv[i].sz)
- errx(1, "expected -std argument");
-
- term_newln(p);
- term_word(p, "The");
-
- p->flags |= ttypes[TTYPE_FUNC_NAME];
- term_word(p, *node->args->argv[i].value);
- p->flags &= ~ttypes[TTYPE_FUNC_NAME];
- p->flags |= TERMP_NOSPACE;
-
- term_word(p, "() function returns the value 0 if successful;");
- term_word(p, "otherwise the value -1 is returned and the");
- term_word(p, "global variable");
-
- p->flags |= ttypes[TTYPE_VAR_DECL];
- term_word(p, "errno");
- p->flags &= ~ttypes[TTYPE_VAR_DECL];
-
- term_word(p, "is set to indicate the error.");
-
- return(1);
-}
-
-
-/* ARGSUSED */
-static int
-termp_ex_pre(DECL_ARGS)
-{
- int i;
-
- if (-1 == (i = arg_getattr(MDOC_Std, node)))
- errx(1, "expected -std argument");
- if (1 != node->args->argv[i].sz)
- errx(1, "expected -std argument");
-
- term_word(p, "The");
- p->flags |= ttypes[TTYPE_PROG];
- term_word(p, *node->args->argv[i].value);
- p->flags &= ~ttypes[TTYPE_PROG];
- term_word(p, "utility exits 0 on success, and >0 if an error occurs.");
-
- return(1);
-}
-
-
-/* ARGSUSED */
-static int
-termp_nd_pre(DECL_ARGS)
-{
-
- term_word(p, "\\-");
- return(1);
-}
-
-
-/* ARGSUSED */
-static void
-termp_bl_post(DECL_ARGS)
-{
-
- if (MDOC_BLOCK == node->type)
- term_newln(p);
-}
-
-
-/* ARGSUSED */
-static void
-termp_op_post(DECL_ARGS)
-{
-
- if (MDOC_BODY != node->type)
- return;
- p->flags |= TERMP_NOSPACE;
- term_word(p, "\\(rB");
-}
-
-
-/* ARGSUSED */
-static int
-termp_xr_pre(DECL_ARGS)
-{
- const struct mdoc_node *n;
-
- if (NULL == (n = node->child))
- errx(1, "expected text line argument");
- term_word(p, n->string);
- if (NULL == (n = n->next))
- return(0);
- p->flags |= TERMP_NOSPACE;
- term_word(p, "(");
- p->flags |= TERMP_NOSPACE;
- term_word(p, n->string);
- p->flags |= TERMP_NOSPACE;
- term_word(p, ")");
- return(0);
-}
-
-
-/* ARGSUSED */
-static int
-termp_vt_pre(DECL_ARGS)
-{
-
- /* FIXME: this can be "type name". */
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_VAR_DECL]);
- return(1);
-}
-
-
-/* ARGSUSED */
-static void
-termp_vt_post(DECL_ARGS)
-{
-
- if (node->sec == SEC_SYNOPSIS)
- term_vspace(p);
-}
-
-
-/* ARGSUSED */
-static int
-termp_fd_pre(DECL_ARGS)
-{
-
- /*
- * FIXME: this naming is bad. This value is used, in general,
- * for the #include header or other preprocessor statement.
- */
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_FUNC_DECL]);
- return(1);
-}
-
-
-/* ARGSUSED */
-static void
-termp_fd_post(DECL_ARGS)
-{
-
- if (node->sec != SEC_SYNOPSIS)
- return;
- term_newln(p);
- if (node->next && MDOC_Fd != node->next->tok)
- term_vspace(p);
-}
-
-
-/* ARGSUSED */
-static int
-termp_sh_pre(DECL_ARGS)
-{
-
- switch (node->type) {
- case (MDOC_HEAD):
- term_vspace(p);
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_SECTION]);
- break;
- case (MDOC_BODY):
- p->offset = INDENT;
- break;
- default:
- break;
- }
- return(1);
-}
-
-
-/* ARGSUSED */
-static void
-termp_sh_post(DECL_ARGS)
-{
-
- switch (node->type) {
- case (MDOC_HEAD):
- term_newln(p);
- break;
- case (MDOC_BODY):
- term_newln(p);
- p->offset = 0;
- break;
- default:
- break;
- }
-}
-
-
-/* ARGSUSED */
-static int
-termp_op_pre(DECL_ARGS)
-{
-
- switch (node->type) {
- case (MDOC_BODY):
- term_word(p, "\\(lB");
- p->flags |= TERMP_NOSPACE;
- break;
- default:
- break;
- }
- return(1);
-}
-
-
-/* ARGSUSED */
-static int
-termp_bt_pre(DECL_ARGS)
-{
-
- term_word(p, "is currently in beta test.");
- return(1);
-}
-
-
-/* ARGSUSED */
-static int
-termp_lb_pre(DECL_ARGS)
-{
- const char *lb;
-
- if (NULL == node->child)
- errx(1, "expected text line argument");
- if ((lb = mdoc_a2lib(node->child->string))) {
- term_word(p, lb);
- return(0);
- }
- term_word(p, "library");
- return(1);
-}
-
-
-/* ARGSUSED */
-static void
-termp_lb_post(DECL_ARGS)
-{
-
- term_newln(p);
-}
-
-
-/* ARGSUSED */
-static int
-termp_ud_pre(DECL_ARGS)
-{
-
- term_word(p, "currently under development.");
- return(1);
-}
-
-
-/* ARGSUSED */
-static int
-termp_d1_pre(DECL_ARGS)
-{
-
- if (MDOC_BODY != node->type)
- return(1);
- term_newln(p);
- p->offset += (pair->offset = INDENT);
- return(1);
-}
-
-
-/* ARGSUSED */
-static void
-termp_d1_post(DECL_ARGS)
-{
-
- if (MDOC_BODY != node->type)
- return;
- term_newln(p);
- p->offset -= pair->offset;
-}
-
-
-/* ARGSUSED */
-static int
-termp_aq_pre(DECL_ARGS)
-{
-
- if (MDOC_BODY != node->type)
- return(1);
- term_word(p, "\\(la");
- p->flags |= TERMP_NOSPACE;
- return(1);
-}
-
-
-/* ARGSUSED */
-static void
-termp_aq_post(DECL_ARGS)
-{
-
- if (MDOC_BODY != node->type)
- return;
- p->flags |= TERMP_NOSPACE;
- term_word(p, "\\(ra");
-}
-
-
-/* ARGSUSED */
-static int
-termp_ft_pre(DECL_ARGS)
-{
-
- if (SEC_SYNOPSIS == node->sec)
- if (node->prev && MDOC_Fo == node->prev->tok)
- term_vspace(p);
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_FUNC_TYPE]);
- return(1);
-}
-
-
-/* ARGSUSED */
-static void
-termp_ft_post(DECL_ARGS)
-{
-
- if (SEC_SYNOPSIS == node->sec)
- term_newln(p);
-}
-
-
-/* ARGSUSED */
-static int
-termp_fn_pre(DECL_ARGS)
-{
- const struct mdoc_node *n;
-
- if (NULL == node->child)
- errx(1, "expected text line arguments");
-
- /* FIXME: can be "type funcname" "type varname"... */
-
- p->flags |= ttypes[TTYPE_FUNC_NAME];
- term_word(p, node->child->string);
- p->flags &= ~ttypes[TTYPE_FUNC_NAME];
-
- p->flags |= TERMP_NOSPACE;
- term_word(p, "(");
-
- for (n = node->child->next; n; n = n->next) {
- p->flags |= ttypes[TTYPE_FUNC_ARG];
- term_word(p, n->string);
- p->flags &= ~ttypes[TTYPE_FUNC_ARG];
- if (n->next)
- term_word(p, ",");
- }
-
- term_word(p, ")");
-
- if (SEC_SYNOPSIS == node->sec)
- term_word(p, ";");
-
- return(0);
-}
-
-
-/* ARGSUSED */
-static void
-termp_fn_post(DECL_ARGS)
-{
-
- if (node->sec == SEC_SYNOPSIS && node->next)
- term_vspace(p);
-
-}
-
-
-/* ARGSUSED */
-static int
-termp_sx_pre(DECL_ARGS)
-{
-
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_LINK]);
- return(1);
-}
-
-
-/* ARGSUSED */
-static int
-termp_fa_pre(DECL_ARGS)
-{
- struct mdoc_node *n;
-
- if (node->parent->tok != MDOC_Fo) {
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_FUNC_ARG]);
- return(1);
- }
-
- for (n = node->child; n; n = n->next) {
- p->flags |= ttypes[TTYPE_FUNC_ARG];
- term_word(p, n->string);
- p->flags &= ~ttypes[TTYPE_FUNC_ARG];
- if (n->next)
- term_word(p, ",");
- }
-
- if (node->child && node->next && node->next->tok == MDOC_Fa)
- term_word(p, ",");
-
- return(0);
-}
-
-
-/* ARGSUSED */
-static int
-termp_va_pre(DECL_ARGS)
-{
-
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_VAR_DECL]);
- return(1);
-}
-
-
-/* ARGSUSED */
-static int
-termp_bd_pre(DECL_ARGS)
-{
- int i, type, ln;
-
- /*
- * This is fairly tricky due primarily to crappy documentation.
- * If -ragged or -filled are specified, the block does nothing
- * but change the indentation.
- *
- * If, on the other hand, -unfilled or -literal are specified,
- * then the game changes. Text is printed exactly as entered in
- * the display: if a macro line, a newline is appended to the
- * line. Blank lines are allowed.
- */
-
- if (MDOC_BLOCK == node->type)
- return(fmt_block_vspace(p, node, node));
- else if (MDOC_BODY != node->type)
- return(1);
-
- if (NULL == node->parent->args)
- errx(1, "missing display type");
-
- pair->offset = p->offset;
-
- for (type = -1, i = 0;
- i < (int)node->parent->args->argc; i++) {
- switch (node->parent->args->argv[i].arg) {
- case (MDOC_Ragged):
- /* FALLTHROUGH */
- case (MDOC_Filled):
- /* FALLTHROUGH */
- case (MDOC_Unfilled):
- /* FALLTHROUGH */
- case (MDOC_Literal):
- type = node->parent->args->argv[i].arg;
- i = (int)node->parent->args->argc;
- break;
- default:
- break;
- }
- }
-
- if (NULL == node->parent->args)
- errx(1, "missing display type");
-
- i = arg_getattr(MDOC_Offset, node->parent);
- if (-1 != i) {
- if (1 != node->parent->args->argv[i].sz)
- errx(1, "expected single value");
- p->offset += arg_offset(&node->parent->args->argv[i]);
- }
-
- switch (type) {
- case (MDOC_Literal):
- /* FALLTHROUGH */
- case (MDOC_Unfilled):
- break;
- default:
- return(1);
- }
-
- /*
- * Tricky. Iterate through all children. If we're on a
- * different parse line, append a newline and then the contents.
- * Ew.
- */
-
- p->flags |= TERMP_LITERAL;
- ln = node->child ? node->child->line : 0;
-
- for (node = node->child; node; node = node->next) {
- if (ln < node->line) {
- term_flushln(p);
- p->flags |= TERMP_NOSPACE;
- }
- ln = node->line;
- term_node(p, pair, meta, node);
- }
-
- return(0);
-}
-
-
-/* ARGSUSED */
-static void
-termp_bd_post(DECL_ARGS)
-{
-
- if (MDOC_BODY != node->type)
- return;
-
- term_flushln(p);
- p->flags &= ~TERMP_LITERAL;
- p->offset = pair->offset;
- p->flags |= TERMP_NOSPACE;
-}
-
-
-/* ARGSUSED */
-static int
-termp_qq_pre(DECL_ARGS)
-{
-
- if (MDOC_BODY != node->type)
- return(1);
- term_word(p, "\"");
- p->flags |= TERMP_NOSPACE;
- return(1);
-}
-
-
-/* ARGSUSED */
-static void
-termp_qq_post(DECL_ARGS)
-{
-
- if (MDOC_BODY != node->type)
- return;
- p->flags |= TERMP_NOSPACE;
- term_word(p, "\"");
-}
-
-
-/* ARGSUSED */
-static int
-termp_bsx_pre(DECL_ARGS)
-{
-
- term_word(p, "BSDI BSD/OS");
- return(1);
-}
-
+#include "config.h"
-/* ARGSUSED */
-static void
-termp_bx_post(DECL_ARGS)
-{
-
- if (node->child)
- p->flags |= TERMP_NOSPACE;
- term_word(p, "BSD");
-}
+#include <sys/types.h>
+#include <assert.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
-/* ARGSUSED */
-static int
-termp_ox_pre(DECL_ARGS)
-{
+#include "mandoc.h"
+#include "mandoc_aux.h"
+#include "out.h"
+#include "term.h"
+#include "main.h"
- term_word(p, "OpenBSD");
- return(1);
-}
+static size_t cond_width(const struct termp *, int, int *);
+static void adjbuf(struct termp *p, size_t);
+static void bufferc(struct termp *, char);
+static void encode(struct termp *, const char *, size_t);
+static void encode1(struct termp *, int);
-/* ARGSUSED */
-static int
-termp_dx_pre(DECL_ARGS)
+void
+term_free(struct termp *p)
{
- term_word(p, "DragonFly");
- return(1);
+ free(p->buf);
+ free(p->fontq);
+ free(p);
}
-
-/* ARGSUSED */
-static int
-termp_ux_pre(DECL_ARGS)
+void
+term_begin(struct termp *p, term_margin head,
+ term_margin foot, const struct roff_meta *arg)
{
- term_word(p, "UNIX");
- return(1);
+ p->headf = head;
+ p->footf = foot;
+ p->argf = arg;
+ (*p->begin)(p);
}
-
-/* ARGSUSED */
-static int
-termp_fx_pre(DECL_ARGS)
+void
+term_end(struct termp *p)
{
- term_word(p, "FreeBSD");
- return(1);
+ (*p->end)(p);
}
+/*
+ * 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
+ * at the same offset as the chunk itself. By default, also break the
+ * output line at the end of the chunk.
+ * The following flags may be specified:
+ *
+ * - TERMP_NOBREAK: Do not break the output line at the right margin,
+ * but only at the max right margin. Also, do not break the output
+ * 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,
+ * which can be 0, 1, or 2, remain to the right margin, the line
+ * will be broken.
+ * - TERMP_BRTRSP: Consider trailing whitespace significant
+ * when deciding whether the chunk fits or not.
+ * - 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
+ * of at the offset. Used together with TERMP_NOBREAK for the tags
+ * in various kinds of tagged lists.
+ * - TERMP_DANGLE: Do not break the output line at the right margin,
+ * append the next chunk after it even if this one is too long.
+ * To be used together with TERMP_NOBREAK.
+ * - TERMP_HANG: Like TERMP_DANGLE, and also suppress padding before
+ * the next chunk if this column is not full.
+ */
+void
+term_flushln(struct termp *p)
+{
+ size_t i; /* current input position in p->buf */
+ int ntab; /* number of tabs to prepend */
+ size_t vis; /* current visual position on output */
+ size_t vbl; /* number of blanks to prepend to output */
+ size_t vend; /* end of word visual position on output */
+ size_t bp; /* visual right border position */
+ size_t dv; /* temporary for visual pos calculations */
+ size_t j; /* temporary loop index for p->buf */
+ size_t jhy; /* last hyph before overflow w/r/t j */
+ size_t maxvis; /* output position of visible boundary */
-/* ARGSUSED */
-static int
-termp_nx_pre(DECL_ARGS)
-{
+ /*
+ * First, establish the maximum columns of "visible" content.
+ * This is usually the difference between the right-margin and
+ * an indentation, but can be, for tagged lists or columns, a
+ * small set of values.
+ *
+ * The following unsigned-signed subtractions look strange,
+ * but they are actually correct. If the int p->overstep
+ * is negative, it gets sign extended. Subtracting that
+ * very large size_t effectively adds a small number to dv.
+ */
+ dv = p->rmargin > p->offset ? p->rmargin - p->offset : 0;
+ maxvis = (int)dv > p->overstep ? dv - (size_t)p->overstep : 0;
+
+ if (p->flags & TERMP_NOBREAK) {
+ dv = p->maxrmargin > p->offset ?
+ p->maxrmargin - p->offset : 0;
+ bp = (int)dv > p->overstep ?
+ dv - (size_t)p->overstep : 0;
+ } else
+ bp = maxvis;
- term_word(p, "NetBSD");
- return(1);
-}
+ /*
+ * Calculate the required amount of padding.
+ */
+ vbl = p->offset + p->overstep > p->viscol ?
+ p->offset + p->overstep - p->viscol : 0;
+
+ vis = vend = 0;
+ i = 0;
+
+ while (i < p->col) {
+ /*
+ * Handle literal tab characters: collapse all
+ * subsequent tabs into a single huge set of spaces.
+ */
+ ntab = 0;
+ while (i < p->col && '\t' == p->buf[i]) {
+ vend = (vis / p->tabwidth + 1) * p->tabwidth;
+ vbl += vend - vis;
+ vis = vend;
+ ntab++;
+ i++;
+ }
+ /*
+ * Count up visible word characters. Control sequences
+ * (starting with the CSI) aren't counted. A space
+ * generates a non-printing word, which is valid (the
+ * space is printed according to regular spacing rules).
+ */
+
+ for (j = i, jhy = 0; j < p->col; j++) {
+ if (' ' == p->buf[j] || '\t' == p->buf[j])
+ break;
+
+ /* Back over the the last printed character. */
+ if (8 == p->buf[j]) {
+ assert(j);
+ vend -= (*p->width)(p, p->buf[j - 1]);
+ continue;
+ }
-/* ARGSUSED */
-static int
-termp_sq_pre(DECL_ARGS)
-{
+ /* Regular word. */
+ /* Break at the hyphen point if we overrun. */
+ if (vend > vis && vend < bp &&
+ (ASCII_HYPH == p->buf[j] ||
+ ASCII_BREAK == p->buf[j]))
+ jhy = j;
+
+ /*
+ * Hyphenation now decided, put back a real
+ * hyphen such that we get the correct width.
+ */
+ if (ASCII_HYPH == p->buf[j])
+ p->buf[j] = '-';
+
+ vend += (*p->width)(p, p->buf[j]);
+ }
- if (MDOC_BODY != node->type)
- return(1);
- term_word(p, "\\(oq");
- p->flags |= TERMP_NOSPACE;
- return(1);
-}
+ /*
+ * Find out whether we would exceed the right margin.
+ * If so, break to the next line.
+ */
+ if (vend > bp && 0 == jhy && vis > 0) {
+ vend -= vis;
+ (*p->endline)(p);
+ p->viscol = 0;
+ if (TERMP_BRIND & p->flags) {
+ vbl = p->rmargin;
+ vend += p->rmargin;
+ vend -= p->offset;
+ } else
+ vbl = p->offset;
+
+ /* use pending tabs on the new line */
+
+ if (0 < ntab)
+ vbl += ntab * p->tabwidth;
+
+ /*
+ * Remove the p->overstep width.
+ * Again, if p->overstep is negative,
+ * sign extension does the right thing.
+ */
+
+ bp += (size_t)p->overstep;
+ p->overstep = 0;
+ }
+ /* Write out the [remaining] word. */
+ for ( ; i < p->col; i++) {
+ if (vend > bp && jhy > 0 && i > jhy)
+ break;
+ if ('\t' == p->buf[i])
+ break;
+ if (' ' == p->buf[i]) {
+ j = i;
+ while (i < p->col && ' ' == p->buf[i])
+ i++;
+ dv = (i - j) * (*p->width)(p, ' ');
+ vbl += dv;
+ vend += dv;
+ break;
+ }
+ if (ASCII_NBRSP == p->buf[i]) {
+ vbl += (*p->width)(p, ' ');
+ continue;
+ }
+ if (ASCII_BREAK == p->buf[i])
+ continue;
+
+ /*
+ * Now we definitely know there will be
+ * printable characters to output,
+ * so write preceding white space now.
+ */
+ if (vbl) {
+ (*p->advance)(p, vbl);
+ p->viscol += vbl;
+ vbl = 0;
+ }
-/* ARGSUSED */
-static void
-termp_sq_post(DECL_ARGS)
-{
+ (*p->letter)(p, p->buf[i]);
+ if (8 == p->buf[i])
+ p->viscol -= (*p->width)(p, p->buf[i-1]);
+ else
+ p->viscol += (*p->width)(p, p->buf[i]);
+ }
+ vis = vend;
+ }
- if (MDOC_BODY != node->type)
+ /*
+ * 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->overstep = 0;
+ p->flags &= ~(TERMP_BACKAFTER | TERMP_BACKBEFORE);
+
+ if ( ! (TERMP_NOBREAK & p->flags)) {
+ p->viscol = 0;
+ (*p->endline)(p);
return;
- p->flags |= TERMP_NOSPACE;
- term_word(p, "\\(aq");
-}
-
-
-/* ARGSUSED */
-static int
-termp_pf_pre(DECL_ARGS)
-{
-
- p->flags |= TERMP_IGNDELIM;
- return(1);
-}
-
-
-/* ARGSUSED */
-static void
-termp_pf_post(DECL_ARGS)
-{
-
- p->flags &= ~TERMP_IGNDELIM;
- p->flags |= TERMP_NOSPACE;
-}
-
-
-/* ARGSUSED */
-static int
-termp_ss_pre(DECL_ARGS)
-{
-
- switch (node->type) {
- case (MDOC_BLOCK):
- term_newln(p);
- if (node->prev)
- term_vspace(p);
- break;
- case (MDOC_HEAD):
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_SSECTION]);
- p->offset = INDENT / 2;
- break;
- default:
- break;
}
- return(1);
-}
+ if (TERMP_HANG & p->flags) {
+ p->overstep += (int)(p->offset + vis - p->rmargin +
+ p->trailspace * (*p->width)(p, ' '));
+
+ /*
+ * If we have overstepped the margin, temporarily move
+ * it to the right and flag the rest of the line to be
+ * shorter.
+ * If there is a request to keep the columns together,
+ * allow negative overstep when the column is not full.
+ */
+ if (p->trailspace && p->overstep < 0)
+ p->overstep = 0;
+ return;
+ } else if (TERMP_DANGLE & p->flags)
+ return;
-/* ARGSUSED */
-static void
-termp_ss_post(DECL_ARGS)
-{
+ /* Trailing whitespace is significant in some columns. */
+ if (vis && vbl && (TERMP_BRTRSP & p->flags))
+ vis += vbl;
- switch (node->type) {
- case (MDOC_HEAD):
- term_newln(p);
- p->offset = INDENT;
- break;
- default:
- break;
+ /* If the column was overrun, break the line. */
+ if (maxvis < vis + p->trailspace * (*p->width)(p, ' ')) {
+ (*p->endline)(p);
+ p->viscol = 0;
}
}
-
-/* ARGSUSED */
-static int
-termp_pa_pre(DECL_ARGS)
+/*
+ * 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
+ * assertion.
+ */
+void
+term_newln(struct termp *p)
{
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_FILE]);
- return(1);
+ p->flags |= TERMP_NOSPACE;
+ if (p->col || p->viscol)
+ term_flushln(p);
}
-
-/* ARGSUSED */
-static int
-termp_em_pre(DECL_ARGS)
+/*
+ * 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.
+ * All data in the output buffer is flushed prior to the newline
+ * assertion.
+ */
+void
+term_vspace(struct termp *p)
{
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_EMPH]);
- return(1);
+ term_newln(p);
+ p->viscol = 0;
+ if (0 < p->skipvsp)
+ p->skipvsp--;
+ else
+ (*p->endline)(p);
}
-
-/* ARGSUSED */
-static int
-termp_cd_pre(DECL_ARGS)
+/* Swap current and previous font; for \fP and .ft P */
+void
+term_fontlast(struct termp *p)
{
+ enum termfont f;
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_CONFIG]);
- term_newln(p);
- return(1);
+ f = p->fontl;
+ p->fontl = p->fontq[p->fonti];
+ p->fontq[p->fonti] = f;
}
-
-/* ARGSUSED */
-static int
-termp_cm_pre(DECL_ARGS)
+/* Set font, save current, discard previous; for \f, .ft, .B etc. */
+void
+term_fontrepl(struct termp *p, enum termfont f)
{
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_CMD_FLAG]);
- return(1);
+ p->fontl = p->fontq[p->fonti];
+ p->fontq[p->fonti] = f;
}
-
-/* ARGSUSED */
-static int
-termp_ic_pre(DECL_ARGS)
+/* Set font, save previous. */
+void
+term_fontpush(struct termp *p, enum termfont f)
{
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_CMD]);
- return(1);
+ p->fontl = p->fontq[p->fonti];
+ if (++p->fonti == p->fontsz) {
+ p->fontsz += 8;
+ p->fontq = mandoc_reallocarray(p->fontq,
+ p->fontsz, sizeof(enum termfont *));
+ }
+ p->fontq[p->fonti] = f;
}
-
-/* ARGSUSED */
-static int
-termp_in_pre(DECL_ARGS)
+/* Flush to make the saved pointer current again. */
+void
+term_fontpopq(struct termp *p, int i)
{
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_INCLUDE]);
- term_word(p, "#include");
- term_word(p, "<");
- p->flags |= TERMP_NOSPACE;
- return(1);
+ assert(i >= 0);
+ if (p->fonti > i)
+ p->fonti = i;
}
-
-/* ARGSUSED */
-static void
-termp_in_post(DECL_ARGS)
+/* Pop one font off the stack. */
+void
+term_fontpop(struct termp *p)
{
- p->flags |= TERMP_NOSPACE;
- term_word(p, ">");
-
- term_newln(p);
- if (SEC_SYNOPSIS != node->sec)
- return;
- if (node->next && MDOC_In != node->next->tok)
- term_vspace(p);
+ assert(p->fonti);
+ p->fonti--;
}
+/*
+ * 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
+ * handles word styling.
+ */
+void
+term_word(struct termp *p, const char *word)
+{
+ const char nbrsp[2] = { ASCII_NBRSP, 0 };
+ const char *seq, *cp;
+ int sz, uc;
+ size_t ssz;
+ enum mandoc_esc esc;
+
+ if ( ! (TERMP_NOSPACE & p->flags)) {
+ if ( ! (TERMP_KEEP & p->flags)) {
+ bufferc(p, ' ');
+ if (TERMP_SENTENCE & p->flags)
+ bufferc(p, ' ');
+ } else
+ bufferc(p, ASCII_NBRSP);
+ }
+ if (TERMP_PREKEEP & p->flags)
+ p->flags |= TERMP_KEEP;
-/* ARGSUSED */
-static int
-termp_at_pre(DECL_ARGS)
-{
- const char *att;
-
- att = NULL;
-
- if (node->child)
- att = mdoc_a2att(node->child->string);
- if (NULL == att)
- att = "AT&T UNIX";
+ if ( ! (p->flags & TERMP_NONOSPACE))
+ p->flags &= ~TERMP_NOSPACE;
+ else
+ p->flags |= TERMP_NOSPACE;
- term_word(p, att);
- return(0);
-}
+ p->flags &= ~(TERMP_SENTENCE | TERMP_NONEWLINE);
+ p->skipvsp = 0;
+
+ while ('\0' != *word) {
+ if ('\\' != *word) {
+ 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;
+ }
+ word++;
+ esc = mandoc_escape(&word, &seq, &sz);
+ if (ESCAPE_ERROR == esc)
+ continue;
-/* ARGSUSED */
-static int
-termp_brq_pre(DECL_ARGS)
-{
+ switch (esc) {
+ case ESCAPE_UNICODE:
+ uc = mchars_num2uc(seq + 1, sz - 1);
+ break;
+ case ESCAPE_NUMBERED:
+ uc = mchars_num2char(seq, sz);
+ if (uc < 0)
+ continue;
+ break;
+ 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);
+ continue;
+ case ESCAPE_FONTITALIC:
+ term_fontrepl(p, TERMFONT_UNDER);
+ continue;
+ case ESCAPE_FONTBI:
+ term_fontrepl(p, TERMFONT_BI);
+ continue;
+ case ESCAPE_FONT:
+ case ESCAPE_FONTROMAN:
+ term_fontrepl(p, TERMFONT_NONE);
+ continue;
+ case ESCAPE_FONTPREV:
+ term_fontlast(p);
+ continue;
+ case ESCAPE_NOSPACE:
+ if (p->flags & TERMP_BACKAFTER)
+ p->flags &= ~TERMP_BACKAFTER;
+ else if (*word == '\0')
+ p->flags |= (TERMP_NOSPACE | TERMP_NONEWLINE);
+ continue;
+ case ESCAPE_SKIPCHAR:
+ p->flags |= TERMP_BACKAFTER;
+ continue;
+ case ESCAPE_OVERSTRIKE:
+ cp = seq + sz;
+ while (seq < cp) {
+ if (*seq == '\\') {
+ mandoc_escape(&seq, NULL, NULL);
+ continue;
+ }
+ encode1(p, *seq++);
+ if (seq < cp) {
+ if (p->flags & TERMP_BACKBEFORE)
+ p->flags |= TERMP_BACKAFTER;
+ else
+ p->flags |= TERMP_BACKBEFORE;
+ }
+ }
+ /* Trim trailing backspace/blank pair. */
+ if (p->col > 2 && p->buf[p->col - 1] == ' ')
+ p->col -= 2;
+ continue;
+ default:
+ continue;
+ }
- if (MDOC_BODY != node->type)
- return(1);
- term_word(p, "\\(lC");
- p->flags |= TERMP_NOSPACE;
- return(1);
+ /*
+ * Common handling for Unicode and numbered
+ * character escape sequences.
+ */
+
+ if (p->enc == TERMENC_ASCII) {
+ cp = ascii_uc2str(uc);
+ encode(p, cp, strlen(cp));
+ } else {
+ if ((uc < 0x20 && uc != 0x09) ||
+ (uc > 0x7E && uc < 0xA0))
+ uc = 0xFFFD;
+ encode1(p, uc);
+ }
+ }
+ p->flags &= ~TERMP_NBRWORD;
}
-
-/* ARGSUSED */
static void
-termp_brq_post(DECL_ARGS)
+adjbuf(struct termp *p, size_t sz)
{
- if (MDOC_BODY != node->type)
- return;
- p->flags |= TERMP_NOSPACE;
- term_word(p, "\\(rC");
-}
-
-
-/* ARGSUSED */
-static int
-termp_bq_pre(DECL_ARGS)
-{
+ if (0 == p->maxcols)
+ p->maxcols = 1024;
+ while (sz >= p->maxcols)
+ p->maxcols <<= 2;
- if (MDOC_BODY != node->type)
- return(1);
- term_word(p, "\\(lB");
- p->flags |= TERMP_NOSPACE;
- return(1);
+ p->buf = mandoc_reallocarray(p->buf, p->maxcols, sizeof(int));
}
-
-/* ARGSUSED */
static void
-termp_bq_post(DECL_ARGS)
+bufferc(struct termp *p, char c)
{
- if (MDOC_BODY != node->type)
- return;
- p->flags |= TERMP_NOSPACE;
- term_word(p, "\\(rB");
-}
-
-
-/* ARGSUSED */
-static int
-termp_pq_pre(DECL_ARGS)
-{
+ if (p->col + 1 >= p->maxcols)
+ adjbuf(p, p->col + 1);
- if (MDOC_BODY != node->type)
- return(1);
- term_word(p, "\\&(");
- p->flags |= TERMP_NOSPACE;
- return(1);
+ p->buf[p->col++] = c;
}
-
-/* ARGSUSED */
+/*
+ * See encode().
+ * Do this for a single (probably unicode) value.
+ * Does not check for non-decorated glyphs.
+ */
static void
-termp_pq_post(DECL_ARGS)
-{
-
- if (MDOC_BODY != node->type)
- return;
- term_word(p, ")");
-}
-
-
-/* ARGSUSED */
-static int
-termp_fo_pre(DECL_ARGS)
+encode1(struct termp *p, int c)
{
- const struct mdoc_node *n;
+ enum termfont f;
- if (MDOC_BODY == node->type) {
- term_word(p, "(");
- p->flags |= TERMP_NOSPACE;
- return(1);
- } else if (MDOC_HEAD != node->type)
- return(1);
+ if (p->col + 7 >= p->maxcols)
+ adjbuf(p, p->col + 7);
- /* XXX - groff shows only first parameter */
+ f = (c == ASCII_HYPH || isgraph(c)) ?
+ p->fontq[p->fonti] : TERMFONT_NONE;
- p->flags |= ttypes[TTYPE_FUNC_NAME];
- for (n = node->child; n; n = n->next) {
- if (MDOC_TEXT != n->type)
- errx(1, "expected text line argument");
- term_word(p, n->string);
+ if (p->flags & TERMP_BACKBEFORE) {
+ if (p->buf[p->col - 1] == ' ')
+ p->col--;
+ else
+ p->buf[p->col++] = 8;
+ p->flags &= ~TERMP_BACKBEFORE;
+ }
+ 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;
+ if (p->flags & TERMP_BACKAFTER) {
+ p->flags |= TERMP_BACKBEFORE;
+ p->flags &= ~TERMP_BACKAFTER;
}
- p->flags &= ~ttypes[TTYPE_FUNC_NAME];
-
- return(0);
}
-
-/* ARGSUSED */
static void
-termp_fo_post(DECL_ARGS)
-{
-
- if (MDOC_BODY != node->type)
- return;
- p->flags |= TERMP_NOSPACE;
- term_word(p, ")");
- p->flags |= TERMP_NOSPACE;
- term_word(p, ";");
- term_newln(p);
-}
-
-
-/* ARGSUSED */
-static int
-termp_bf_pre(DECL_ARGS)
+encode(struct termp *p, const char *word, size_t sz)
{
- const struct mdoc_node *n;
-
- if (MDOC_HEAD == node->type) {
- return(0);
- } else if (MDOC_BLOCK != node->type)
- return(1);
-
- if (NULL == (n = node->head->child)) {
- if (arg_hasattr(MDOC_Emphasis, node))
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_EMPH]);
- else if (arg_hasattr(MDOC_Symbolic, node))
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_SYMB]);
+ size_t i;
- return(1);
- }
+ if (p->col + 2 + (sz * 5) >= p->maxcols)
+ adjbuf(p, p->col + 2 + (sz * 5));
- if (MDOC_TEXT != n->type)
- errx(1, "expected text line arguments");
-
- if (0 == strcmp("Em", n->string))
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_EMPH]);
- else if (0 == strcmp("Sy", n->string))
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_EMPH]);
-
- return(1);
+ for (i = 0; i < sz; i++) {
+ if (ASCII_HYPH == word[i] ||
+ isgraph((unsigned char)word[i]))
+ encode1(p, word[i]);
+ else
+ p->buf[p->col++] = word[i];
+ }
}
-
-/* ARGSUSED */
-static int
-termp_sy_pre(DECL_ARGS)
+void
+term_setwidth(struct termp *p, const char *wstr)
{
+ struct roffsu su;
+ int iop, width;
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_SYMB]);
- return(1);
+ 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);
}
-
-/* ARGSUSED */
-static int
-termp_ms_pre(DECL_ARGS)
+size_t
+term_len(const struct termp *p, size_t sz)
{
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_SYMBOL]);
- return(1);
+ return (*p->width)(p, ' ') * sz;
}
-
-
-/* ARGSUSED */
-static int
-termp_sm_pre(DECL_ARGS)
+static size_t
+cond_width(const struct termp *p, int c, int *skip)
{
- if (NULL == node->child || MDOC_TEXT != node->child->type)
- errx(1, "expected boolean line argument");
-
- if (0 == strcmp("on", node->child->string)) {
- p->flags &= ~TERMP_NONOSPACE;
- p->flags &= ~TERMP_NOSPACE;
+ if (*skip) {
+ (*skip) = 0;
+ return 0;
} else
- p->flags |= TERMP_NONOSPACE;
-
- return(0);
-}
-
-
-/* ARGSUSED */
-static int
-termp_ap_pre(DECL_ARGS)
-{
-
- p->flags |= TERMP_NOSPACE;
- term_word(p, "\\(aq");
- p->flags |= TERMP_NOSPACE;
- return(1);
-}
-
-
-/* ARGSUSED */
-static int
-termp__j_pre(DECL_ARGS)
-{
-
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_REF_JOURNAL]);
- return(1);
+ return (*p->width)(p, c);
}
-
-/* ARGSUSED */
-static int
-termp__t_pre(DECL_ARGS)
+size_t
+term_strlen(const struct termp *p, const char *cp)
{
+ 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,
+ ASCII_BREAK, '\0' };
- term_word(p, "\"");
- p->flags |= TERMP_NOSPACE;
- return(1);
-}
+ /*
+ * Account for escaped sequences within string length
+ * calculations. This follows the logic in term_word() as we
+ * must calculate the width of produced strings.
+ */
+ sz = 0;
+ skip = 0;
+ while ('\0' != *cp) {
+ rsz = strcspn(cp, rej);
+ for (i = 0; i < rsz; i++)
+ sz += cond_width(p, *cp++, &skip);
+
+ switch (*cp) {
+ case '\\':
+ cp++;
+ esc = mandoc_escape(&cp, &seq, &ssz);
+ if (ESCAPE_ERROR == esc)
+ continue;
+
+ rhs = NULL;
+
+ switch (esc) {
+ case ESCAPE_UNICODE:
+ uc = mchars_num2uc(seq + 1, ssz - 1);
+ break;
+ case ESCAPE_NUMBERED:
+ uc = mchars_num2char(seq, ssz);
+ if (uc < 0)
+ continue;
+ break;
+ case ESCAPE_SPECIAL:
+ if (p->enc == TERMENC_ASCII) {
+ rhs = mchars_spec2str(p->symtab,
+ seq, ssz, &rsz);
+ if (rhs != NULL)
+ break;
+ } else {
+ uc = mchars_spec2cp(p->symtab,
+ seq, ssz);
+ if (uc > 0)
+ sz += cond_width(p, uc, &skip);
+ }
+ continue;
+ 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;
+ }
+ i = (*p->width)(p, *seq++);
+ if (rsz < i)
+ rsz = i;
+ }
+ sz += rsz;
+ continue;
+ default:
+ continue;
+ }
-/* ARGSUSED */
-static void
-termp__t_post(DECL_ARGS)
-{
+ /*
+ * 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;
+ }
+ }
- p->flags |= TERMP_NOSPACE;
- term_word(p, "\"");
- termp____post(p, pair, meta, node);
-}
+ if (skip) {
+ skip = 0;
+ break;
+ }
+ /*
+ * Common handling for all escape sequences
+ * printing more than one character.
+ */
-/* ARGSUSED */
-static void
-termp____post(DECL_ARGS)
-{
+ 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++;
+ break;
+ default:
+ break;
+ }
+ }
- p->flags |= TERMP_NOSPACE;
- term_word(p, node->next ? "," : ".");
+ return sz;
}
-
-/* ARGSUSED */
-static int
-termp_lk_pre(DECL_ARGS)
+int
+term_vspan(const struct termp *p, const struct roffsu *su)
{
- const struct mdoc_node *n;
-
- if (NULL == (n = node->child))
- errx(1, "expected line argument");
-
- p->flags |= ttypes[TTYPE_LINK_ANCHOR];
- term_word(p, n->string);
- p->flags &= ~ttypes[TTYPE_LINK_ANCHOR];
- p->flags |= TERMP_NOSPACE;
- term_word(p, ":");
+ double r;
+ int ri;
- p->flags |= ttypes[TTYPE_LINK_TEXT];
- for ( ; n; n = n->next) {
- term_word(p, n->string);
+ switch (su->unit) {
+ case SCALE_BU:
+ r = su->scale / 40.0;
+ break;
+ case SCALE_CM:
+ r = su->scale * 6.0 / 2.54;
+ break;
+ case SCALE_FS:
+ r = su->scale * 65536.0 / 40.0;
+ break;
+ case SCALE_IN:
+ r = su->scale * 6.0;
+ break;
+ case SCALE_MM:
+ r = su->scale * 0.006;
+ break;
+ case SCALE_PC:
+ r = su->scale;
+ break;
+ case SCALE_PT:
+ r = su->scale / 12.0;
+ break;
+ case SCALE_EN:
+ case SCALE_EM:
+ r = su->scale * 0.6;
+ break;
+ case SCALE_VS:
+ r = su->scale;
+ break;
+ default:
+ abort();
}
- p->flags &= ~ttypes[TTYPE_LINK_TEXT];
-
- return(0);
+ ri = r > 0.0 ? r + 0.4995 : r - 0.4995;
+ return ri < 66 ? ri : 1;
}
-
-/* ARGSUSED */
-static int
-termp_mt_pre(DECL_ARGS)
+/*
+ * Convert a scaling width to basic units, rounding down.
+ */
+int
+term_hspan(const struct termp *p, const struct roffsu *su)
{
- TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_LINK_ANCHOR]);
- return(1);
+ return (*p->hspan)(p, su);
}
-
git.ckatri.com / mandoc.git / blobdiff