cmd/mandoc/man.c

	man.c revision 260e9a87725c090ba5835b1f9f0b62fa2f96036f
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov/*  $Id: man.c,v 1.149 2015/01/30 21:28:46 schwarze Exp $ */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore/*
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov * Copyright (c) 2013, 2014, 2015 Ingo Schwarze <schwarze@openbsd.org>
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov * Copyright (c) 2011 Joerg Sonnenberger <joerg@netbsd.org>
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore *
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore * Permission to use, copy, modify, and distribute this software for any
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore * purpose with or without fee is hereby granted, provided that the above
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore * copyright notice and this permission notice appear in all copies.
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore *
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore#include "config.h"
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore#include <sys/types.h>
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore#include <assert.h>
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov#include <ctype.h>
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore#include <stdarg.h>
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore#include <stdlib.h>
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore#include <stdio.h>
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore#include <string.h>
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore#include "man.h"
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore#include "mandoc.h"
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov#include "mandoc_aux.h"
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore#include "libman.h"
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore#include "libmandoc.h"
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovconst   char *const __man_macronames[MAN_MAX] = {
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    "br",       "TH",       "SH",       "SS",
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    "TP",       "LP",       "PP",       "P",
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    "IP",       "HP",       "SM",       "SB",
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    "BI",       "IB",       "BR",       "RB",
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    "R",        "B",        "I",        "IR",
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    "RI",       "sp",       "nf",
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    "fi",       "RE",       "RS",       "DT",
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    "UC",       "PD",       "AT",       "in",
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    "ft",       "OP",       "EX",       "EE",
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    "UR",       "UE",       "ll"
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    };
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amoreconst   char * const *man_macronames = __man_macronames;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovstatic  void         man_alloc1(struct man *);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovstatic  void         man_breakscope(struct man *, enum mant);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovstatic  void         man_descope(struct man *, int, int);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovstatic  void         man_free1(struct man *);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovstatic  struct man_node *man_node_alloc(struct man *, int, int,
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore                enum man_type, enum mant);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovstatic  void         man_node_append(struct man *, struct man_node *);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amorestatic  void         man_node_free(struct man_node *);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovstatic  void         man_node_unlink(struct man *,
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore                struct man_node *);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amorestatic  int      man_ptext(struct man *, int, char *, int);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amorestatic  int      man_pmacro(struct man *, int, char *, int);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amoreconst struct man_node *
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amoreman_node(const struct man *man)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    return(man->first);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amoreconst struct man_meta *
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amoreman_meta(const struct man *man)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    return(&man->meta);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amorevoid
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amoreman_reset(struct man *man)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    man_free1(man);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    man_alloc1(man);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amorevoid
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amoreman_free(struct man *man)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    man_free1(man);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    free(man);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amorestruct man *
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovman_alloc(struct roff *roff, struct mparse *parse,
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    const char *defos, int quick)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    struct man  *p;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    p = mandoc_calloc(1, sizeof(struct man));
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    man_hash_init();
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    p->parse = parse;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    p->defos = defos;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    p->quick = quick;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    p->roff = roff;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    man_alloc1(p);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    return(p);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovvoid
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amoreman_endparse(struct man *man)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    man_macroend(man);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amoreint
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amoreman_parseln(struct man *man, int ln, char *buf, int offs)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    if (man->last->type != MAN_EQN || ln > man->last->line)
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        man->flags |= MAN_NEWLINE;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    return (roff_getcontrol(man->roff, buf, &offs) ?
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        man_pmacro(man, ln, buf, offs) :
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        man_ptext(man, ln, buf, offs));
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amorestatic void
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amoreman_free1(struct man *man)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    if (man->first)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        man_node_delete(man, man->first);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    free(man->meta.title);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    free(man->meta.source);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    free(man->meta.date);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    free(man->meta.vol);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    free(man->meta.msec);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amorestatic void
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amoreman_alloc1(struct man *man)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    memset(&man->meta, 0, sizeof(struct man_meta));
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    man->flags = 0;
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    man->last = mandoc_calloc(1, sizeof(struct man_node));
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    man->first = man->last;
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    man->last->type = MAN_ROOT;
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    man->last->tok = MAN_MAX;
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    man->next = MAN_NEXT_CHILD;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovstatic void
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amoreman_node_append(struct man *man, struct man_node *p)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    assert(man->last);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    assert(man->first);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    assert(p->type != MAN_ROOT);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    switch (man->next) {
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    case MAN_NEXT_SIBLING:
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        man->last->next = p;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        p->prev = man->last;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        p->parent = man->last->parent;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        break;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    case MAN_NEXT_CHILD:
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        man->last->child = p;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        p->parent = man->last;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        break;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    default:
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        abort();
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        /* NOTREACHED */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    }
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    assert(p->parent);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    p->parent->nchild++;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    switch (p->type) {
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    case MAN_BLOCK:
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        if (p->tok == MAN_SH || p->tok == MAN_SS)
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            man->flags &= ~MAN_LITERAL;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        break;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    case MAN_HEAD:
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        assert(p->parent->type == MAN_BLOCK);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        p->parent->head = p;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        break;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    case MAN_BODY:
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        assert(p->parent->type == MAN_BLOCK);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        p->parent->body = p;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        break;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    default:
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        break;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    }
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    man->last = p;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    switch (p->type) {
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    case MAN_TBL:
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        /* FALLTHROUGH */
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    case MAN_TEXT:
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        man_valid_post(man);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        break;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    default:
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        break;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    }
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amorestatic struct man_node *
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovman_node_alloc(struct man *man, int line, int pos,
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        enum man_type type, enum mant tok)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    struct man_node *p;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    p = mandoc_calloc(1, sizeof(struct man_node));
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    p->line = line;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    p->pos = pos;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    p->type = type;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    p->tok = tok;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    if (man->flags & MAN_NEWLINE)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        p->flags |= MAN_LINE;
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    man->flags &= ~MAN_NEWLINE;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    return(p);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovvoid
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amoreman_elem_alloc(struct man *man, int line, int pos, enum mant tok)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    struct man_node *p;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    p = man_node_alloc(man, line, pos, MAN_ELEM, tok);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    man_node_append(man, p);
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    man->next = MAN_NEXT_CHILD;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovvoid
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amoreman_head_alloc(struct man *man, int line, int pos, enum mant tok)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    struct man_node *p;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    p = man_node_alloc(man, line, pos, MAN_HEAD, tok);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    man_node_append(man, p);
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    man->next = MAN_NEXT_CHILD;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovvoid
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amoreman_body_alloc(struct man *man, int line, int pos, enum mant tok)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    struct man_node *p;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    p = man_node_alloc(man, line, pos, MAN_BODY, tok);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    man_node_append(man, p);
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    man->next = MAN_NEXT_CHILD;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovvoid
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amoreman_block_alloc(struct man *man, int line, int pos, enum mant tok)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    struct man_node *p;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    p = man_node_alloc(man, line, pos, MAN_BLOCK, tok);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    man_node_append(man, p);
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    man->next = MAN_NEXT_CHILD;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovvoid
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amoreman_word_alloc(struct man *man, int line, int pos, const char *word)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    struct man_node *n;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    n = man_node_alloc(man, line, pos, MAN_TEXT, MAN_MAX);
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    n->string = roff_strdup(man->roff, word);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    man_node_append(man, n);
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    man->next = MAN_NEXT_SIBLING;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovvoid
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovman_word_append(struct man *man, const char *word)
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov{
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    struct man_node *n;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    char        *addstr, *newstr;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    n = man->last;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    addstr = roff_strdup(man->roff, word);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    free(addstr);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    free(n->string);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    n->string = newstr;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    man->next = MAN_NEXT_SIBLING;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore/*
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore * Free all of the resources held by a node.  This does NOT unlink a
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore * node from its context; for that, see man_node_unlink().
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amorestatic void
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amoreman_node_free(struct man_node *p)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    free(p->string);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    free(p);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amorevoid
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amoreman_node_delete(struct man *man, struct man_node *p)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    while (p->child)
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore        man_node_delete(man, p->child);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    man_node_unlink(man, p);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    man_node_free(p);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovvoid
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amoreman_addeqn(struct man *man, const struct eqn *ep)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    struct man_node *n;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    n = man_node_alloc(man, ep->ln, ep->pos, MAN_EQN, MAN_MAX);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    n->eqn = ep;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    if (ep->ln > man->last->line)
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        n->flags |= MAN_LINE;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    man_node_append(man, n);
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    man->next = MAN_NEXT_SIBLING;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    man_descope(man, ep->ln, ep->pos);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovvoid
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amoreman_addspan(struct man *man, const struct tbl_span *sp)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    struct man_node *n;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    man_breakscope(man, MAN_MAX);
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    n = man_node_alloc(man, sp->line, 0, MAN_TBL, MAN_MAX);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    n->span = sp;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    man_node_append(man, n);
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    man->next = MAN_NEXT_SIBLING;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    man_descope(man, sp->line, 0);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovstatic void
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amoreman_descope(struct man *man, int line, int offs)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    /*
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore     * Co-ordinate what happens with having a next-line scope open:
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore     * first close out the element scope (if applicable), then close
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore     * out the block scope (also if applicable).
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore     */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    if (man->flags & MAN_ELINE) {
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore        man->flags &= ~MAN_ELINE;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        man_unscope(man, man->last->parent);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    }
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    if ( ! (man->flags & MAN_BLINE))
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        return;
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    man->flags &= ~MAN_BLINE;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    man_unscope(man, man->last->parent);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    man_body_alloc(man, line, offs, man->last->tok);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amorestatic int
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amoreman_ptext(struct man *man, int line, char *buf, int offs)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    int      i;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    /* Literal free-form text whitespace is preserved. */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    if (man->flags & MAN_LITERAL) {
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        man_word_alloc(man, line, offs, buf + offs);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        man_descope(man, line, offs);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        return(1);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    }
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    for (i = offs; buf[i] == ' '; i++)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        /* Skip leading whitespace. */ ;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    /*
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore     * Blank lines are ignored right after headings
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore     * but add a single vertical space elsewhere.
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore     */
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    if (buf[i] == '\0') {
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        /* Allocate a blank entry. */
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        if (man->last->tok != MAN_SH &&
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            man->last->tok != MAN_SS) {
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            man_elem_alloc(man, line, offs, MAN_sp);
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore            man->next = MAN_NEXT_SIBLING;
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore        }
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore        return(1);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    }
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    /*
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore     * Warn if the last un-escaped character is whitespace. Then
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov     * strip away the remaining spaces (tabs stay!).
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore     */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    i = (int)strlen(buf);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    assert(i);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        if (i > 1 && '\\' != buf[i - 2])
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            mandoc_msg(MANDOCERR_SPACE_EOL, man->parse,
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov                line, i - 1, NULL);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        for (--i; i && ' ' == buf[i]; i--)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore            /* Spin back to non-space. */ ;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        /* Jump ahead of escaped whitespace. */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        i += '\\' == buf[i] ? 2 : 1;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        buf[i] = '\0';
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    }
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    man_word_alloc(man, line, offs, buf + offs);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    /*
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore     * End-of-sentence check.  If the last character is an unescaped
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore     * EOS character, then flag the node as being the end of a
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore     * sentence.  The front-end will know how to interpret this.
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore     */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    assert(i);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    if (mandoc_eos(buf, (size_t)i))
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore        man->last->flags |= MAN_EOS;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    man_descope(man, line, offs);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    return(1);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amorestatic int
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amoreman_pmacro(struct man *man, int ln, char *buf, int offs)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    struct man_node *n;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    const char  *cp;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    enum mant    tok;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    int      i, ppos;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    int      bline;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    char         mac[5];
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    ppos = offs;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    /*
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore     * Copy the first word into a nil-terminated buffer.
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov     * Stop when a space, tab, escape, or eoln is encountered.
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore     */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    i = 0;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    while (i < 4 && strchr(" \t\\", buf[offs]) == NULL)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        mac[i++] = buf[offs++];
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    mac[i] = '\0';
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    tok = (i > 0 && i < 4) ? man_hash_find(mac) : MAN_MAX;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    if (tok == MAN_MAX) {
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        mandoc_msg(MANDOCERR_MACRO, man->parse,
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            ln, ppos, buf + ppos - 1);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        return(1);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    }
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    /* Skip a leading escape sequence or tab. */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    switch (buf[offs]) {
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    case '\\':
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        cp = buf + offs + 1;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        mandoc_escape(&cp, NULL, NULL);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        offs = cp - buf;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        break;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    case '\t':
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        offs++;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        break;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    default:
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        break;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    }
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    /* Jump to the next non-whitespace word. */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    while (buf[offs] && buf[offs] == ' ')
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        offs++;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    /*
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore     * Trailing whitespace.  Note that tabs are allowed to be passed
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore     * into the parser as "text", so we only warn about spaces here.
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore     */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    if (buf[offs] == '\0' && buf[offs - 1] == ' ')
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        mandoc_msg(MANDOCERR_SPACE_EOL, man->parse,
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            ln, offs - 1, NULL);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    /*
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov     * Some macros break next-line scopes; otherwise, remember
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov     * whether we are in next-line scope for a block head.
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore     */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    man_breakscope(man, tok);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    bline = man->flags & MAN_BLINE;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    /* Call to handler... */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    assert(man_macros[tok].fp);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    (*man_macros[tok].fp)(man, tok, ln, ppos, &offs, buf);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    /* In quick mode (for mandocdb), abort after the NAME section. */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    if (man->quick && tok == MAN_SH) {
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        n = man->last;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        if (n->type == MAN_BODY &&
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            strcmp(n->prev->child->string, "NAME"))
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            return(2);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    }
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    /*
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov     * If we are in a next-line scope for a block head,
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov     * close it out now and switch to the body,
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov     * unless the next-line scope is allowed to continue.
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore     */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    if ( ! bline || man->flags & MAN_ELINE ||
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        man_macros[tok].flags & MAN_NSCOPED)
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        return(1);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    assert(man->flags & MAN_BLINE);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    man->flags &= ~MAN_BLINE;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    man_unscope(man, man->last->parent);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    man_body_alloc(man, ln, ppos, man->last->tok);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    return(1);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovvoid
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovman_breakscope(struct man *man, enum mant tok)
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov{
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    struct man_node *n;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    /*
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov     * An element next line scope is open,
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov     * and the new macro is not allowed inside elements.
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov     * Delete the element that is being broken.
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore     */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    if (man->flags & MAN_ELINE && (tok == MAN_MAX ||
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        ! (man_macros[tok].flags & MAN_NSCOPED))) {
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        n = man->last;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        assert(n->type != MAN_TEXT);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        if (man_macros[n->tok].flags & MAN_NSCOPED)
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            n = n->parent;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        mandoc_vmsg(MANDOCERR_BLK_LINE, man->parse,
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            n->line, n->pos, "%s breaks %s",
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            tok == MAN_MAX ? "TS" : man_macronames[tok],
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            man_macronames[n->tok]);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        man_node_delete(man, n);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        man->flags &= ~MAN_ELINE;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    }
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    /*
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov     * A block header next line scope is open,
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov     * and the new macro is not allowed inside block headers.
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov     * Delete the block that is being broken.
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore     */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    if (man->flags & MAN_BLINE && (tok == MAN_MAX ||
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        man_macros[tok].flags & MAN_BSCOPE)) {
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        n = man->last;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        if (n->type == MAN_TEXT)
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            n = n->parent;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        if ( ! (man_macros[n->tok].flags & MAN_BSCOPE))
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            n = n->parent;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        assert(n->type == MAN_HEAD);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        n = n->parent;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        assert(n->type == MAN_BLOCK);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        assert(man_macros[n->tok].flags & MAN_SCOPED);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        mandoc_vmsg(MANDOCERR_BLK_LINE, man->parse,
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            n->line, n->pos, "%s breaks %s",
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            tok == MAN_MAX ? "TS" : man_macronames[tok],
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            man_macronames[n->tok]);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        man_node_delete(man, n);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        man->flags &= ~MAN_BLINE;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    }
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore/*
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore * Unlink a node from its context.  If "man" is provided, the last parse
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore * point will also be adjusted accordingly.
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amorestatic void
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amoreman_node_unlink(struct man *man, struct man_node *n)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    /* Adjust siblings. */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    if (n->prev)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        n->prev->next = n->next;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    if (n->next)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        n->next->prev = n->prev;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    /* Adjust parent. */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    if (n->parent) {
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        n->parent->nchild--;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        if (n->parent->child == n)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore            n->parent->child = n->prev ? n->prev : n->next;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    }
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    /* Adjust parse point, if applicable. */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    if (man && man->last == n) {
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        /*XXX: this can occur when bailing from validation. */
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        /*assert(NULL == n->next);*/
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        if (n->prev) {
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore            man->last = n->prev;
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore            man->next = MAN_NEXT_SIBLING;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        } else {
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore            man->last = n->parent;
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore            man->next = MAN_NEXT_CHILD;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore        }
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore    }
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    if (man && man->first == n)
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore        man->first = NULL;
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amoreconst struct mparse *
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amoreman_mparse(const struct man *man)
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore{
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    assert(man && man->parse);
698f87a48e2e945bfe5493ce168e0d0ae1cedd5cGarrett D'Amore    return(man->parse);
95c635efb7c3b86efc493e0447eaec7aecca3f0fGarrett D'Amore}
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovvoid
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankovman_deroff(char **dest, const struct man_node *n)
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov{
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    char    *cp;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    size_t   sz;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    if (n->type != MAN_TEXT) {
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        for (n = n->child; n; n = n->next)
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            man_deroff(dest, n);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        return;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    }
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    /* Skip leading whitespace and escape sequences. */
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    cp = n->string;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    while ('\0' != *cp) {
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        if ('\\' == *cp) {
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            cp++;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            mandoc_escape((const char **)&cp, NULL, NULL);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        } else if (isspace((unsigned char)*cp))
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            cp++;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        else
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            break;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    }
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    /* Skip trailing whitespace. */
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    for (sz = strlen(cp); sz; sz--)
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        if (0 == isspace((unsigned char)cp[sz-1]))
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov            break;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    /* Skip empty strings. */
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    if (0 == sz)
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        return;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    if (NULL == *dest) {
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        *dest = mandoc_strndup(cp, sz);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov        return;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    }
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    free(*dest);
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov    *dest = cp;
260e9a87725c090ba5835b1f9f0b62fa2f96036fYuri Pankov}