152 lines
3.5 KiB
C
152 lines
3.5 KiB
C
/* $Id: roff_validate.c,v 1.20 2020/06/22 19:20:40 schwarze Exp $ */
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/*
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* Copyright (c) 2010, 2017, 2018, 2020 Ingo Schwarze <schwarze@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "config.h"
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#include <sys/types.h>
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#include <assert.h>
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#include <stdio.h>
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#include <string.h>
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#include "mandoc.h"
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#include "roff.h"
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#include "libmandoc.h"
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#include "roff_int.h"
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#define ROFF_VALID_ARGS struct roff_man *man, struct roff_node *n
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typedef void (*roff_valid_fp)(ROFF_VALID_ARGS);
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static void roff_valid_br(ROFF_VALID_ARGS);
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static void roff_valid_fi(ROFF_VALID_ARGS);
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static void roff_valid_ft(ROFF_VALID_ARGS);
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static void roff_valid_nf(ROFF_VALID_ARGS);
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static void roff_valid_sp(ROFF_VALID_ARGS);
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static const roff_valid_fp roff_valids[ROFF_MAX] = {
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roff_valid_br, /* br */
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NULL, /* ce */
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roff_valid_fi, /* fi */
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roff_valid_ft, /* ft */
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NULL, /* ll */
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NULL, /* mc */
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roff_valid_nf, /* nf */
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NULL, /* po */
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NULL, /* rj */
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roff_valid_sp, /* sp */
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NULL, /* ta */
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NULL, /* ti */
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};
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void
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roff_validate(struct roff_man *man)
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{
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struct roff_node *n;
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n = man->last;
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assert(n->tok < ROFF_MAX);
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if (roff_valids[n->tok] != NULL)
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(*roff_valids[n->tok])(man, n);
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}
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static void
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roff_valid_br(ROFF_VALID_ARGS)
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{
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struct roff_node *np;
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if (n->next != NULL && n->next->type == ROFFT_TEXT &&
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*n->next->string == ' ') {
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mandoc_msg(MANDOCERR_PAR_SKIP, n->line, n->pos,
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"br before text line with leading blank");
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roff_node_delete(man, n);
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return;
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}
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if ((np = roff_node_prev(n)) == NULL)
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return;
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switch (np->tok) {
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case ROFF_br:
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case ROFF_sp:
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case MDOC_Pp:
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mandoc_msg(MANDOCERR_PAR_SKIP,
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n->line, n->pos, "br after %s", roff_name[np->tok]);
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roff_node_delete(man, n);
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break;
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default:
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break;
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}
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}
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static void
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roff_valid_fi(ROFF_VALID_ARGS)
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{
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if ((n->flags & NODE_NOFILL) == 0)
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mandoc_msg(MANDOCERR_FI_SKIP, n->line, n->pos, "fi");
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}
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static void
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roff_valid_ft(ROFF_VALID_ARGS)
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{
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const char *cp;
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if (n->child == NULL) {
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man->next = ROFF_NEXT_CHILD;
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roff_word_alloc(man, n->line, n->pos, "P");
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man->last = n;
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return;
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}
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cp = n->child->string;
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if (mandoc_font(cp, (int)strlen(cp)) != ESCAPE_ERROR)
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return;
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mandoc_msg(MANDOCERR_FT_BAD, n->line, n->pos, "ft %s", cp);
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roff_node_delete(man, n);
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}
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static void
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roff_valid_nf(ROFF_VALID_ARGS)
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{
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if (n->flags & NODE_NOFILL)
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mandoc_msg(MANDOCERR_NF_SKIP, n->line, n->pos, "nf");
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}
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static void
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roff_valid_sp(ROFF_VALID_ARGS)
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{
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struct roff_node *np;
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if ((np = roff_node_prev(n)) == NULL)
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return;
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switch (np->tok) {
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case ROFF_br:
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mandoc_msg(MANDOCERR_PAR_SKIP,
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np->line, np->pos, "br before sp");
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roff_node_delete(man, np);
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break;
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case MDOC_Pp:
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mandoc_msg(MANDOCERR_PAR_SKIP,
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n->line, n->pos, "sp after Pp");
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roff_node_delete(man, n);
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break;
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default:
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break;
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}
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}
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