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Annotation of mandoc/man_validate.c, Revision 1.16

1.16    ! kristaps    1: /*     $Id: man_validate.c,v 1.15 2009/07/04 09:01:55 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>
1.16    ! kristaps   21: #include <errno.h>
        !            22: #include <limits.h>
1.1       kristaps   23: #include <stdarg.h>
                     24: #include <stdlib.h>
                     25:
                     26: #include "libman.h"
1.15      kristaps   27: #include "libmandoc.h"
1.1       kristaps   28:
1.11      kristaps   29: #define        POSTARGS  struct man *m, const struct man_node *n
1.1       kristaps   30:
                     31: typedef        int     (*v_post)(POSTARGS);
                     32:
                     33: struct man_valid {
                     34:        v_post   *posts;
                     35: };
                     36:
                     37: static int       check_eq0(POSTARGS);
1.16    ! kristaps   38: static int       check_eq1(POSTARGS);
1.1       kristaps   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);
1.16    ! kristaps   44: static int       check_root(POSTARGS);
        !            45: static int       check_sp(POSTARGS);
1.11      kristaps   46: static int       check_text(POSTARGS);
1.1       kristaps   47:
1.16    ! kristaps   48: static v_post    posts_eq0[] = { check_eq0, NULL };
        !            49: static v_post    posts_ge1[] = { check_ge1, NULL };
        !            50: static v_post    posts_ge2_le5[] = { check_ge2, check_le5, NULL };
1.1       kristaps   51: static v_post    posts_le1[] = { check_le1, NULL };
                     52: static v_post    posts_le2[] = { check_le2, NULL };
1.16    ! kristaps   53: static v_post    posts_sp[] = { check_sp, NULL };
1.1       kristaps   54:
                     55: static const struct man_valid man_valids[MAN_MAX] = {
1.10      kristaps   56:        { posts_eq0 }, /* br */
1.1       kristaps   57:        { posts_ge2_le5 }, /* TH */
                     58:        { posts_ge1 }, /* SH */
                     59:        { posts_ge1 }, /* SS */
1.4       kristaps   60:        { NULL }, /* TP */
1.1       kristaps   61:        { posts_eq0 }, /* LP */
                     62:        { posts_eq0 }, /* PP */
                     63:        { posts_eq0 }, /* P */
                     64:        { posts_le2 }, /* IP */
                     65:        { posts_le1 }, /* HP */
                     66:        { NULL }, /* SM */
                     67:        { NULL }, /* SB */
                     68:        { NULL }, /* BI */
                     69:        { NULL }, /* IB */
                     70:        { NULL }, /* BR */
                     71:        { NULL }, /* RB */
                     72:        { NULL }, /* R */
                     73:        { NULL }, /* B */
                     74:        { NULL }, /* I */
                     75:        { NULL }, /* IR */
1.4       kristaps   76:        { NULL }, /* RI */
1.6       kristaps   77:        { posts_eq0 }, /* na */
1.7       kristaps   78:        { NULL }, /* i */
1.16    ! kristaps   79:        { posts_sp }, /* sp */
1.1       kristaps   80: };
                     81:
                     82:
                     83: int
                     84: man_valid_post(struct man *m)
                     85: {
                     86:        v_post          *cp;
                     87:
                     88:        if (MAN_VALID & m->last->flags)
                     89:                return(1);
                     90:        m->last->flags |= MAN_VALID;
                     91:
                     92:        switch (m->last->type) {
                     93:        case (MAN_TEXT):
1.11      kristaps   94:                return(check_text(m, m->last));
1.1       kristaps   95:        case (MAN_ROOT):
1.14      kristaps   96:                return(check_root(m, m->last));
1.1       kristaps   97:        default:
                     98:                break;
                     99:        }
                    100:
                    101:        if (NULL == (cp = man_valids[m->last->tok].posts))
                    102:                return(1);
                    103:        for ( ; *cp; cp++)
                    104:                if ( ! (*cp)(m, m->last))
                    105:                        return(0);
                    106:
                    107:        return(1);
                    108: }
                    109:
                    110:
1.11      kristaps  111: static int
1.14      kristaps  112: check_root(POSTARGS)
                    113: {
                    114:
                    115:        if (NULL == m->first->child)
                    116:                return(man_nerr(m, n, WNODATA));
                    117:        if (NULL == m->meta.title)
                    118:                return(man_nerr(m, n, WNOTITLE));
                    119:
                    120:        return(1);
                    121: }
                    122:
                    123:
                    124: static int
1.11      kristaps  125: check_text(POSTARGS)
                    126: {
                    127:        const char      *p;
1.15      kristaps  128:        int              pos, c;
1.11      kristaps  129:
                    130:        assert(n->string);
                    131:
                    132:        for (p = n->string, pos = n->pos + 1; *p; p++, pos++) {
1.15      kristaps  133:                if ('\\' == *p) {
                    134:                        c = mandoc_special(p);
                    135:                        if (c) {
                    136:                                p += c - 1;
                    137:                                pos += c - 1;
                    138:                                continue;
                    139:                        }
                    140:                        if ( ! (MAN_IGN_ESCAPE & m->pflags))
                    141:                                return(man_perr(m, n->line, pos, WESCAPE));
                    142:                        if ( ! man_pwarn(m, n->line, pos, WESCAPE))
                    143:                                return(0);
                    144:                        continue;
                    145:                }
                    146:
                    147:                if ('\t' == *p || isprint((u_char)*p))
1.11      kristaps  148:                        continue;
                    149:
                    150:                if (MAN_IGN_CHARS & m->pflags)
1.12      kristaps  151:                        return(man_pwarn(m, n->line, pos, WNPRINT));
                    152:                return(man_perr(m, n->line, pos, WNPRINT));
1.11      kristaps  153:        }
                    154:
                    155:        return(1);
1.1       kristaps  156: }
                    157:
                    158:
                    159: #define        INEQ_DEFINE(x, ineq, name) \
                    160: static int \
                    161: check_##name(POSTARGS) \
                    162: { \
1.11      kristaps  163:        if (n->nchild ineq (x)) \
1.1       kristaps  164:                return(1); \
1.4       kristaps  165:        return(man_verr(m, n->line, n->pos, \
1.1       kristaps  166:                        "expected line arguments %s %d, have %d", \
1.11      kristaps  167:                        #ineq, (x), n->nchild)); \
1.1       kristaps  168: }
                    169:
                    170: INEQ_DEFINE(0, ==, eq0)
1.16    ! kristaps  171: INEQ_DEFINE(1, ==, eq1)
1.1       kristaps  172: INEQ_DEFINE(1, >=, ge1)
                    173: INEQ_DEFINE(2, >=, ge2)
                    174: INEQ_DEFINE(1, <=, le1)
                    175: INEQ_DEFINE(2, <=, le2)
                    176: INEQ_DEFINE(5, <=, le5)
                    177:
1.16    ! kristaps  178:
        !           179: static int
        !           180: check_sp(POSTARGS)
        !           181: {
        !           182:        long             lval;
        !           183:        char            *ep, *buf;
        !           184:
        !           185:        if (NULL == m->last->child)
        !           186:                return(1);
        !           187:        else if ( ! check_eq1(m, n))
        !           188:                return(0);
        !           189:
        !           190:        assert(MAN_TEXT == m->last->child->type);
        !           191:        buf = m->last->child->string;
        !           192:        assert(buf);
        !           193:
        !           194:        /* From OpenBSD's strtol(3). */
        !           195:        errno = 0;
        !           196:        lval = strtol(buf, &ep, 10);
        !           197:        if (buf[0] == '\0' || *ep != '\0')
        !           198:                return(man_nerr(m, m->last->child, WNUMFMT));
        !           199:
        !           200:        if ((errno == ERANGE && (lval == LONG_MAX || lval == LONG_MIN)) ||
        !           201:                        (lval > INT_MAX || lval < 0))
        !           202:                return(man_nerr(m, m->last->child, WNUMFMT));
        !           203:
        !           204:        return(1);
        !           205: }

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