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Annotation of mandoc/man_validate.c, Revision 1.2

1.2     ! kristaps    1: /* $Id: man_validate.c,v 1.1 2009/03/25 15:17:49 kristaps Exp $ */
1.1       kristaps    2: /*
                      3:  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@openbsd.org>
                      4:  *
                      5:  * Permission to use, copy, modify, and distribute this software for any
                      6:  * purpose with or without fee is hereby granted, provided that the
                      7:  * above copyright notice and this permission notice appear in all
                      8:  * copies.
                      9:  *
                     10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
                     11:  * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
                     12:  * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
                     13:  * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
                     14:  * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
                     15:  * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
                     16:  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
                     17:  * PERFORMANCE OF THIS SOFTWARE.
                     18:  */
                     19: #include <sys/types.h>
                     20:
                     21: #include <assert.h>
                     22: #include <ctype.h>
                     23: #include <stdarg.h>
                     24: #include <stdlib.h>
                     25:
                     26: #include "libman.h"
                     27:
                     28: /* FIXME: validate text. */
                     29:
                     30: #define        POSTARGS  struct man *m, const struct man_node *n
                     31:
                     32: typedef        int     (*v_post)(POSTARGS);
                     33:
                     34: struct man_valid {
                     35:        v_post   *posts;
                     36: };
                     37:
                     38: static int       count(POSTARGS);
                     39: static int       check_eq0(POSTARGS);
                     40: static int       check_ge1(POSTARGS);
                     41: static int       check_ge2(POSTARGS);
                     42: static int       check_le1(POSTARGS);
                     43: static int       check_le2(POSTARGS);
                     44: static int       check_le5(POSTARGS);
                     45:
                     46: static v_post    posts_le1[] = { check_le1, NULL };
                     47: static v_post    posts_le2[] = { check_le2, NULL };
                     48: static v_post    posts_ge1[] = { check_ge1, NULL };
                     49: static v_post    posts_eq0[] = { check_eq0, NULL };
                     50: static v_post    posts_ge2_le5[] = { check_ge2, check_le5, NULL };
                     51:
                     52: static const struct man_valid man_valids[MAN_MAX] = {
                     53:        { NULL }, /* __ */
                     54:        { posts_ge2_le5 }, /* TH */
                     55:        { posts_ge1 }, /* SH */
                     56:        { posts_ge1 }, /* SS */
                     57:        { posts_le1 }, /* TP */
                     58:        { posts_eq0 }, /* LP */
                     59:        { posts_eq0 }, /* PP */
                     60:        { posts_eq0 }, /* P */
                     61:        { posts_le2 }, /* IP */
                     62:        { posts_le1 }, /* HP */
                     63:        { NULL }, /* SM */
                     64:        { NULL }, /* SB */
                     65:        { NULL }, /* BI */
                     66:        { NULL }, /* IB */
                     67:        { NULL }, /* BR */
                     68:        { NULL }, /* RB */
                     69:        { NULL }, /* R */
                     70:        { NULL }, /* B */
                     71:        { NULL }, /* I */
                     72:        { NULL }, /* IR */
                     73: };
                     74:
                     75:
                     76: int
                     77: man_valid_post(struct man *m)
                     78: {
                     79:        v_post          *cp;
                     80:
                     81:        if (MAN_VALID & m->last->flags)
                     82:                return(1);
                     83:        m->last->flags |= MAN_VALID;
                     84:
                     85:        switch (m->last->type) {
                     86:        case (MAN_TEXT):
                     87:                /* FALLTHROUGH */
                     88:        case (MAN_ROOT):
                     89:                return(1);
                     90:        default:
                     91:                break;
                     92:        }
                     93:
                     94:        if (NULL == (cp = man_valids[m->last->tok].posts))
                     95:                return(1);
                     96:        for ( ; *cp; cp++)
                     97:                if ( ! (*cp)(m, m->last))
                     98:                        return(0);
                     99:
                    100:        return(1);
                    101: }
                    102:
                    103:
                    104: static inline int
                    105: count(POSTARGS)
                    106: {
                    107:        int              i;
                    108:
                    109:        for (i = 0; n; n = n->next, i++)
                    110:                /* Loop. */ ;
                    111:        return(i);
                    112: }
                    113:
                    114:
                    115: #define        INEQ_DEFINE(x, ineq, name) \
                    116: static int \
                    117: check_##name(POSTARGS) \
                    118: { \
                    119:        int              c; \
                    120:        if ((c = count(m, n->child)) ineq (x)) \
                    121:                return(1); \
                    122:        return(man_vwarn(m, n->line, n->pos, \
                    123:                        "expected line arguments %s %d, have %d", \
                    124:                        #ineq, (x), c)); \
                    125: }
                    126:
                    127: INEQ_DEFINE(0, ==, eq0)
                    128: INEQ_DEFINE(1, >=, ge1)
                    129: INEQ_DEFINE(2, >=, ge2)
                    130: INEQ_DEFINE(1, <=, le1)
                    131: INEQ_DEFINE(2, <=, le2)
                    132: INEQ_DEFINE(5, <=, le5)
                    133:

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