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Annotation of mandoc/man_macro.c, Revision 1.10

1.10    ! kristaps    1: /* $Id: man_macro.c,v 1.9 2009/03/26 14:38:11 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 <assert.h>
                     20: #include <ctype.h>
                     21: #include <stdlib.h>
                     22: #include <stdio.h>
                     23: #include <string.h>
                     24:
                     25: #include "libman.h"
                     26:
1.9       kristaps   27: #define        FL_NLINE        (1 << 0)
                     28: #define        FL_TLINE        (1 << 1)
                     29:
1.3       kristaps   30: static int              man_args(struct man *, int,
                     31:                                int *, char *, char **);
1.1       kristaps   32:
1.9       kristaps   33: static int man_flags[MAN_MAX] = {
                     34:        0, /* __ */
                     35:        0, /* TH */
                     36:        0, /* SH */
                     37:        0, /* SS */
                     38:        FL_TLINE, /* TP */
                     39:        0, /* LP */
                     40:        0, /* PP */
                     41:        0, /* P */
                     42:        0, /* IP */
                     43:        0, /* HP */
                     44:        FL_NLINE, /* SM */
                     45:        FL_NLINE, /* SB */
                     46:        FL_NLINE, /* BI */
                     47:        FL_NLINE, /* IB */
                     48:        FL_NLINE, /* BR */
                     49:        FL_NLINE, /* RB */
                     50:        FL_NLINE, /* R */
                     51:        FL_NLINE, /* B */
                     52:        FL_NLINE, /* I */
                     53:        FL_NLINE, /* IR */
                     54:        FL_NLINE, /* RI */
1.10    ! kristaps   55:        0, /* br */
1.9       kristaps   56: };
1.1       kristaps   57:
1.3       kristaps   58: int
                     59: man_macro(struct man *man, int tok, int line,
                     60:                int ppos, int *pos, char *buf)
1.1       kristaps   61: {
1.3       kristaps   62:        int              w, la;
                     63:        char            *p;
                     64:        struct man_node *n;
1.1       kristaps   65:
1.3       kristaps   66:        if ( ! man_elem_alloc(man, line, ppos, tok))
1.1       kristaps   67:                return(0);
1.3       kristaps   68:        n = man->last;
                     69:        man->next = MAN_NEXT_CHILD;
1.1       kristaps   70:
                     71:        for (;;) {
                     72:                la = *pos;
1.3       kristaps   73:                w = man_args(man, line, pos, buf, &p);
1.1       kristaps   74:
1.3       kristaps   75:                if (-1 == w)
1.1       kristaps   76:                        return(0);
1.3       kristaps   77:                if (0 == w)
1.1       kristaps   78:                        break;
                     79:
1.3       kristaps   80:                if ( ! man_word_alloc(man, line, la, p))
                     81:                        return(0);
                     82:                man->next = MAN_NEXT_SIBLING;
                     83:        }
1.1       kristaps   84:
1.9       kristaps   85:        if (n == man->last && (FL_NLINE & man_flags[tok])) {
                     86:                if (MAN_NLINE & man->flags)
                     87:                        return(man_verr(man, line, ppos,
                     88:                                "next-line scope already open"));
                     89:                man->flags |= MAN_NLINE;
                     90:                return(1);
                     91:        }
                     92:
                     93:        if (FL_TLINE & man_flags[tok]) {
                     94:                if (MAN_NLINE & man->flags)
                     95:                        return(man_verr(man, line, ppos,
                     96:                                "next-line scope already open"));
                     97:                man->flags |= MAN_NLINE;
                     98:                return(1);
                     99:        }
                    100:
1.7       kristaps  101:        /*
                    102:         * Note that when TH is pruned, we'll be back at the root, so
                    103:         * make sure that we don't clobber as its sibling.
                    104:         */
                    105:
                    106:        for ( ; man->last; man->last = man->last->parent) {
                    107:                if (man->last == n)
                    108:                        break;
                    109:                if (man->last->type == MAN_ROOT)
                    110:                        break;
1.5       kristaps  111:                if ( ! man_valid_post(man))
                    112:                        return(0);
1.6       kristaps  113:                if ( ! man_action_post(man))
                    114:                        return(0);
                    115:        }
1.1       kristaps  116:
1.5       kristaps  117:        assert(man->last);
1.6       kristaps  118:
1.7       kristaps  119:        /*
                    120:         * Same here regarding whether we're back at the root.
                    121:         */
                    122:
                    123:        if (man->last->type != MAN_ROOT && ! man_valid_post(man))
1.5       kristaps  124:                return(0);
1.7       kristaps  125:        if (man->last->type != MAN_ROOT && ! man_action_post(man))
1.6       kristaps  126:                return(0);
1.7       kristaps  127:        if (man->last->type != MAN_ROOT)
                    128:                man->next = MAN_NEXT_SIBLING;
1.1       kristaps  129:
                    130:        return(1);
                    131: }
                    132:
1.3       kristaps  133:
1.4       kristaps  134: int
                    135: man_macroend(struct man *m)
                    136: {
                    137:
1.6       kristaps  138:        for ( ; m->last && m->last != m->first;
                    139:                        m->last = m->last->parent) {
                    140:                if ( ! man_valid_post(m))
                    141:                        return(0);
                    142:                if ( ! man_action_post(m))
                    143:                        return(0);
                    144:        }
1.7       kristaps  145:        assert(m->last == m->first);
1.6       kristaps  146:
                    147:        if ( ! man_valid_post(m))
                    148:                return(0);
                    149:        if ( ! man_action_post(m))
                    150:                return(0);
                    151:
1.4       kristaps  152:        return(1);
                    153: }
                    154:
                    155:
1.3       kristaps  156: /* ARGSUSED */
1.4       kristaps  157: static int
1.8       kristaps  158: man_args(struct man *m, int line,
1.3       kristaps  159:                int *pos, char *buf, char **v)
                    160: {
                    161:
                    162:        if (0 == buf[*pos])
                    163:                return(0);
                    164:
                    165:        /* First parse non-quoted strings. */
                    166:
                    167:        if ('\"' != buf[*pos]) {
                    168:                *v = &buf[*pos];
                    169:
                    170:                while (buf[*pos]) {
                    171:                        if (' ' == buf[*pos])
                    172:                                if ('\\' != buf[*pos - 1])
                    173:                                        break;
                    174:                        (*pos)++;
                    175:                }
                    176:
                    177:                if (0 == buf[*pos])
                    178:                        return(1);
                    179:
                    180:                buf[(*pos)++] = 0;
                    181:
                    182:                if (0 == buf[*pos])
                    183:                        return(1);
                    184:
                    185:                while (buf[*pos] && ' ' == buf[*pos])
                    186:                        (*pos)++;
                    187:
                    188:                if (buf[*pos])
                    189:                        return(1);
                    190:
1.8       kristaps  191:                if ( ! man_vwarn(m, line, *pos, "trailing spaces"))
                    192:                        return(-1);
                    193:
                    194:                return(1);
1.3       kristaps  195:        }
                    196:
                    197:        /*
                    198:         * If we're a quoted string (and quoted strings are allowed),
                    199:         * then parse ahead to the next quote.  If none's found, it's an
                    200:         * error.  After, parse to the next word.
                    201:         */
                    202:
                    203:        *v = &buf[++(*pos)];
                    204:
                    205:        while (buf[*pos] && '\"' != buf[*pos])
                    206:                (*pos)++;
                    207:
                    208:        if (0 == buf[*pos]) {
1.8       kristaps  209:                if ( ! man_vwarn(m, line, *pos, "unterminated quote"))
                    210:                        return(-1);
                    211:                return(1);
1.3       kristaps  212:        }
                    213:
                    214:        buf[(*pos)++] = 0;
                    215:        if (0 == buf[*pos])
                    216:                return(1);
                    217:
                    218:        while (buf[*pos] && ' ' == buf[*pos])
                    219:                (*pos)++;
                    220:
                    221:        if (buf[*pos])
                    222:                return(1);
                    223:
1.8       kristaps  224:        if ( ! man_vwarn(m, line, *pos, "trailing spaces"))
                    225:                return(-1);
                    226:        return(1);
1.3       kristaps  227: }

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