diff options
Diffstat (limited to 'usr.bin/mandoc/roff_validate.c')
| -rw-r--r-- | usr.bin/mandoc/roff_validate.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/usr.bin/mandoc/roff_validate.c b/usr.bin/mandoc/roff_validate.c new file mode 100644 index 0000000..6fa4f33 --- /dev/null +++ b/usr.bin/mandoc/roff_validate.c @@ -0,0 +1,149 @@ +/* $OpenBSD: roff_validate.c,v 1.19 2020/02/27 01:25:58 schwarze Exp $ */ +/* + * Copyright (c) 2010, 2017, 2018, 2020 Ingo Schwarze <schwarze@openbsd.org> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE 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. + */ +#include <sys/types.h> + +#include <assert.h> +#include <stdio.h> +#include <string.h> + +#include "mandoc.h" +#include "roff.h" +#include "libmandoc.h" +#include "roff_int.h" + +#define ROFF_VALID_ARGS struct roff_man *man, struct roff_node *n + +typedef void (*roff_valid_fp)(ROFF_VALID_ARGS); + +static void roff_valid_br(ROFF_VALID_ARGS); +static void roff_valid_fi(ROFF_VALID_ARGS); +static void roff_valid_ft(ROFF_VALID_ARGS); +static void roff_valid_nf(ROFF_VALID_ARGS); +static void roff_valid_sp(ROFF_VALID_ARGS); + +static const roff_valid_fp roff_valids[ROFF_MAX] = { + roff_valid_br, /* br */ + NULL, /* ce */ + roff_valid_fi, /* fi */ + roff_valid_ft, /* ft */ + NULL, /* ll */ + NULL, /* mc */ + roff_valid_nf, /* nf */ + NULL, /* po */ + NULL, /* rj */ + roff_valid_sp, /* sp */ + NULL, /* ta */ + NULL, /* ti */ +}; + + +void +roff_validate(struct roff_man *man) +{ + struct roff_node *n; + + n = man->last; + assert(n->tok < ROFF_MAX); + if (roff_valids[n->tok] != NULL) + (*roff_valids[n->tok])(man, n); +} + +static void +roff_valid_br(ROFF_VALID_ARGS) +{ + struct roff_node *np; + + if (n->next != NULL && n->next->type == ROFFT_TEXT && + *n->next->string == ' ') { + mandoc_msg(MANDOCERR_PAR_SKIP, n->line, n->pos, + "br before text line with leading blank"); + roff_node_delete(man, n); + return; + } + + if ((np = roff_node_prev(n)) == NULL) + return; + + switch (np->tok) { + case ROFF_br: + case ROFF_sp: + case MDOC_Pp: + mandoc_msg(MANDOCERR_PAR_SKIP, + n->line, n->pos, "br after %s", roff_name[np->tok]); + roff_node_delete(man, n); + break; + default: + break; + } +} + +static void +roff_valid_fi(ROFF_VALID_ARGS) +{ + if ((n->flags & NODE_NOFILL) == 0) + mandoc_msg(MANDOCERR_FI_SKIP, n->line, n->pos, "fi"); +} + +static void +roff_valid_ft(ROFF_VALID_ARGS) +{ + const char *cp; + + if (n->child == NULL) { + man->next = ROFF_NEXT_CHILD; + roff_word_alloc(man, n->line, n->pos, "P"); + man->last = n; + return; + } + + cp = n->child->string; + if (mandoc_font(cp, (int)strlen(cp)) != ESCAPE_ERROR) + return; + mandoc_msg(MANDOCERR_FT_BAD, n->line, n->pos, "ft %s", cp); + roff_node_delete(man, n); +} + +static void +roff_valid_nf(ROFF_VALID_ARGS) +{ + if (n->flags & NODE_NOFILL) + mandoc_msg(MANDOCERR_NF_SKIP, n->line, n->pos, "nf"); +} + +static void +roff_valid_sp(ROFF_VALID_ARGS) +{ + struct roff_node *np; + + if ((np = roff_node_prev(n)) == NULL) + return; + + switch (np->tok) { + case ROFF_br: + mandoc_msg(MANDOCERR_PAR_SKIP, + np->line, np->pos, "br before sp"); + roff_node_delete(man, np); + break; + case MDOC_Pp: + mandoc_msg(MANDOCERR_PAR_SKIP, + n->line, n->pos, "sp after Pp"); + roff_node_delete(man, n); + break; + default: + break; + } +} |