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Annotation of mandoc/man_validate.c, Revision 1.11

1.11    ! kristaps    1: /*     $Id: man_validate.c,v 1.10 2009/06/16 19:55:28 kristaps Exp $ */
1.1       kristaps    2: /*
1.9       kristaps    3:  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
1.1       kristaps    4:  *
                      5:  * Permission to use, copy, modify, and distribute this software for any
1.8       kristaps    6:  * purpose with or without fee is hereby granted, provided that the above
                      7:  * copyright notice and this permission notice appear in all copies.
1.1       kristaps    8:  *
1.8       kristaps    9:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     10:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     11:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     12:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     13:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     14:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     15:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1       kristaps   16:  */
                     17: #include <sys/types.h>
                     18:
                     19: #include <assert.h>
                     20: #include <ctype.h>
                     21: #include <stdarg.h>
                     22: #include <stdlib.h>
                     23:
                     24: #include "libman.h"
                     25:
1.11    ! kristaps   26: #define        POSTARGS  struct man *m, const struct man_node *n
1.1       kristaps   27:
1.11    ! kristaps   28: enum   merr {
        !            29:        WPRINT
        !            30: };
1.1       kristaps   31:
                     32: typedef        int     (*v_post)(POSTARGS);
                     33:
                     34: struct man_valid {
                     35:        v_post   *posts;
                     36: };
                     37:
                     38: static int       check_eq0(POSTARGS);
                     39: static int       check_ge1(POSTARGS);
                     40: static int       check_ge2(POSTARGS);
                     41: static int       check_le1(POSTARGS);
                     42: static int       check_le2(POSTARGS);
                     43: static int       check_le5(POSTARGS);
1.11    ! kristaps   44: static int       check_text(POSTARGS);
        !            45: static int       perr(struct man *, int, int, int, enum merr);
1.1       kristaps   46:
                     47: static v_post    posts_le1[] = { check_le1, NULL };
                     48: static v_post    posts_le2[] = { check_le2, NULL };
                     49: static v_post    posts_ge1[] = { check_ge1, NULL };
                     50: static v_post    posts_eq0[] = { check_eq0, NULL };
                     51: static v_post    posts_ge2_le5[] = { check_ge2, check_le5, NULL };
                     52:
                     53: static const struct man_valid man_valids[MAN_MAX] = {
1.10      kristaps   54:        { posts_eq0 }, /* br */
1.1       kristaps   55:        { posts_ge2_le5 }, /* TH */
                     56:        { posts_ge1 }, /* SH */
                     57:        { posts_ge1 }, /* SS */
1.4       kristaps   58:        { NULL }, /* TP */
1.1       kristaps   59:        { posts_eq0 }, /* LP */
                     60:        { posts_eq0 }, /* PP */
                     61:        { posts_eq0 }, /* P */
                     62:        { posts_le2 }, /* IP */
                     63:        { posts_le1 }, /* HP */
                     64:        { NULL }, /* SM */
                     65:        { NULL }, /* SB */
                     66:        { NULL }, /* BI */
                     67:        { NULL }, /* IB */
                     68:        { NULL }, /* BR */
                     69:        { NULL }, /* RB */
                     70:        { NULL }, /* R */
                     71:        { NULL }, /* B */
                     72:        { NULL }, /* I */
                     73:        { NULL }, /* IR */
1.4       kristaps   74:        { NULL }, /* RI */
1.6       kristaps   75:        { posts_eq0 }, /* na */
1.7       kristaps   76:        { NULL }, /* i */
1.1       kristaps   77: };
                     78:
                     79:
                     80: int
                     81: man_valid_post(struct man *m)
                     82: {
                     83:        v_post          *cp;
                     84:
                     85:        if (MAN_VALID & m->last->flags)
                     86:                return(1);
                     87:        m->last->flags |= MAN_VALID;
                     88:
                     89:        switch (m->last->type) {
                     90:        case (MAN_TEXT):
1.11    ! kristaps   91:                return(check_text(m, m->last));
1.1       kristaps   92:        case (MAN_ROOT):
                     93:                return(1);
                     94:        default:
                     95:                break;
                     96:        }
                     97:
                     98:        if (NULL == (cp = man_valids[m->last->tok].posts))
                     99:                return(1);
                    100:        for ( ; *cp; cp++)
                    101:                if ( ! (*cp)(m, m->last))
                    102:                        return(0);
                    103:
                    104:        return(1);
                    105: }
                    106:
                    107:
1.11    ! kristaps  108: static int
        !           109: perr(struct man *m, int line, int pos,
        !           110:                int iserr, enum merr type)
        !           111: {
        !           112:        const char       *p;
        !           113:
        !           114:        p = NULL;
        !           115:        switch (type) {
        !           116:        case (WPRINT):
        !           117:                p = "invalid character";
        !           118:                break;
        !           119:        }
        !           120:        assert(p);
        !           121:
        !           122:        if (iserr)
        !           123:                return(man_verr(m, line, pos, p));
        !           124:
        !           125:        return(man_vwarn(m, line, pos, p));
        !           126: }
        !           127:
        !           128:
        !           129: static int
        !           130: check_text(POSTARGS)
        !           131: {
        !           132:        const char      *p;
        !           133:        int              pos;
        !           134:
        !           135:        assert(n->string);
        !           136:
        !           137:        for (p = n->string, pos = n->pos + 1; *p; p++, pos++) {
        !           138:                if ('\t' == *p || isprint((u_char)*p))
        !           139:                        continue;
        !           140:
        !           141:                if (MAN_IGN_CHARS & m->pflags)
        !           142:                        return(perr(m, n->line, pos, 0, WPRINT));
        !           143:                return(perr(m, n->line, pos, 1, WPRINT));
        !           144:        }
        !           145:
        !           146:        return(1);
1.1       kristaps  147: }
                    148:
                    149:
                    150: #define        INEQ_DEFINE(x, ineq, name) \
                    151: static int \
                    152: check_##name(POSTARGS) \
                    153: { \
1.11    ! kristaps  154:        if (n->nchild ineq (x)) \
1.1       kristaps  155:                return(1); \
1.4       kristaps  156:        return(man_verr(m, n->line, n->pos, \
1.1       kristaps  157:                        "expected line arguments %s %d, have %d", \
1.11    ! kristaps  158:                        #ineq, (x), n->nchild)); \
1.1       kristaps  159: }
                    160:
                    161: INEQ_DEFINE(0, ==, eq0)
                    162: INEQ_DEFINE(1, >=, ge1)
                    163: INEQ_DEFINE(2, >=, ge2)
                    164: INEQ_DEFINE(1, <=, le1)
                    165: INEQ_DEFINE(2, <=, le2)
                    166: INEQ_DEFINE(5, <=, le5)
                    167:

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