[BACK]Return to man.c CVS log [TXT][DIR] Up to [cvsweb.bsd.lv] / mandoc

Annotation of mandoc/man.c, Revision 1.52

1.52    ! kristaps    1: /*     $Id: man.c,v 1.51 2010/03/22 14:03:03 kristaps Exp $ */
1.1       kristaps    2: /*
1.19      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
1.18      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:  *
1.18      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:  */
1.47      kristaps   17: #ifdef HAVE_CONFIG_H
                     18: #include "config.h"
                     19: #endif
                     20:
1.41      kristaps   21: #include <sys/types.h>
                     22:
1.1       kristaps   23: #include <assert.h>
                     24: #include <ctype.h>
                     25: #include <stdarg.h>
                     26: #include <stdlib.h>
                     27: #include <stdio.h>
                     28: #include <string.h>
                     29:
                     30: #include "libman.h"
1.45      kristaps   31: #include "libmandoc.h"
1.1       kristaps   32:
1.27      kristaps   33: const  char *const __man_merrnames[WERRMAX] = {
                     34:        "invalid character", /* WNPRINT */
                     35:        "invalid manual section", /* WMSEC */
                     36:        "invalid date format", /* WDATE */
                     37:        "scope of prior line violated", /* WLNSCOPE */
1.51      kristaps   38:        "over-zealous prior line scope violation", /* WLNSCOPE2 */
1.27      kristaps   39:        "trailing whitespace", /* WTSPACE */
                     40:        "unterminated quoted parameter", /* WTQUOTE */
                     41:        "document has no body", /* WNODATA */
                     42:        "document has no title/section", /* WNOTITLE */
                     43:        "invalid escape sequence", /* WESCAPE */
1.28      kristaps   44:        "invalid number format", /* WNUMFMT */
1.29      kristaps   45:        "expected block head arguments", /* WHEADARGS */
                     46:        "expected block body arguments", /* WBODYARGS */
                     47:        "expected empty block head", /* WNHEADARGS */
                     48:        "ill-formed macro", /* WMACROFORM */
1.30      kristaps   49:        "scope open on exit", /* WEXITSCOPE */
1.35      kristaps   50:        "no scope context", /* WNOSCOPE */
                     51:        "literal context already open", /* WOLITERAL */
                     52:        "no literal context open" /* WNLITERAL */
1.27      kristaps   53: };
                     54:
1.1       kristaps   55: const  char *const __man_macronames[MAN_MAX] = {
1.21      kristaps   56:        "br",           "TH",           "SH",           "SS",
1.1       kristaps   57:        "TP",           "LP",           "PP",           "P",
                     58:        "IP",           "HP",           "SM",           "SB",
                     59:        "BI",           "IB",           "BR",           "RB",
1.11      kristaps   60:        "R",            "B",            "I",            "IR",
1.29      kristaps   61:        "RI",           "na",           "i",            "sp",
1.30      kristaps   62:        "nf",           "fi",           "r",            "RE",
1.52    ! kristaps   63:        "RS",           "DT",           "UC",           "PD",
        !            64:        "Sp",           "Vb",           "Ve",
1.1       kristaps   65:        };
                     66:
                     67: const  char * const *man_macronames = __man_macronames;
                     68:
1.16      kristaps   69: static struct man_node *man_node_alloc(int, int,
                     70:                                enum man_type, int);
1.1       kristaps   71: static int              man_node_append(struct man *,
                     72:                                struct man_node *);
                     73: static int              man_ptext(struct man *, int, char *);
                     74: static int              man_pmacro(struct man *, int, char *);
1.2       kristaps   75: static void             man_free1(struct man *);
1.45      kristaps   76: static void             man_alloc1(struct man *);
1.31      kristaps   77: static int              pstring(struct man *, int, int,
                     78:                                const char *, size_t);
1.43      kristaps   79: static int              macrowarn(struct man *, int, const char *);
1.1       kristaps   80:
                     81:
                     82: const struct man_node *
1.2       kristaps   83: man_node(const struct man *m)
1.1       kristaps   84: {
                     85:
1.2       kristaps   86:        return(MAN_HALT & m->flags ? NULL : m->first);
1.1       kristaps   87: }
                     88:
                     89:
                     90: const struct man_meta *
1.2       kristaps   91: man_meta(const struct man *m)
1.1       kristaps   92: {
                     93:
1.2       kristaps   94:        return(MAN_HALT & m->flags ? NULL : &m->meta);
1.1       kristaps   95: }
                     96:
                     97:
1.45      kristaps   98: void
1.1       kristaps   99: man_reset(struct man *man)
                    100: {
                    101:
1.2       kristaps  102:        man_free1(man);
1.45      kristaps  103:        man_alloc1(man);
1.1       kristaps  104: }
                    105:
                    106:
                    107: void
                    108: man_free(struct man *man)
                    109: {
                    110:
1.2       kristaps  111:        man_free1(man);
1.1       kristaps  112:        free(man);
                    113: }
                    114:
                    115:
                    116: struct man *
1.7       kristaps  117: man_alloc(void *data, int pflags, const struct man_cb *cb)
1.1       kristaps  118: {
                    119:        struct man      *p;
                    120:
1.45      kristaps  121:        p = mandoc_calloc(1, sizeof(struct man));
1.2       kristaps  122:
1.45      kristaps  123:        if (cb)
                    124:                memcpy(&p->cb, cb, sizeof(struct man_cb));
1.1       kristaps  125:
1.40      kristaps  126:        man_hash_init();
1.4       kristaps  127:        p->data = data;
1.7       kristaps  128:        p->pflags = pflags;
1.45      kristaps  129:
                    130:        man_alloc1(p);
1.1       kristaps  131:        return(p);
                    132: }
                    133:
                    134:
                    135: int
                    136: man_endparse(struct man *m)
                    137: {
                    138:
1.3       kristaps  139:        if (MAN_HALT & m->flags)
                    140:                return(0);
                    141:        else if (man_macroend(m))
                    142:                return(1);
                    143:        m->flags |= MAN_HALT;
                    144:        return(0);
1.1       kristaps  145: }
                    146:
                    147:
                    148: int
                    149: man_parseln(struct man *m, int ln, char *buf)
                    150: {
                    151:
                    152:        return('.' == *buf ?
                    153:                        man_pmacro(m, ln, buf) :
                    154:                        man_ptext(m, ln, buf));
                    155: }
                    156:
                    157:
1.2       kristaps  158: static void
                    159: man_free1(struct man *man)
                    160: {
                    161:
                    162:        if (man->first)
                    163:                man_node_freelist(man->first);
                    164:        if (man->meta.title)
                    165:                free(man->meta.title);
1.6       kristaps  166:        if (man->meta.source)
                    167:                free(man->meta.source);
1.2       kristaps  168:        if (man->meta.vol)
                    169:                free(man->meta.vol);
                    170: }
                    171:
                    172:
1.45      kristaps  173: static void
1.2       kristaps  174: man_alloc1(struct man *m)
                    175: {
                    176:
1.44      kristaps  177:        memset(&m->meta, 0, sizeof(struct man_meta));
1.2       kristaps  178:        m->flags = 0;
1.45      kristaps  179:        m->last = mandoc_calloc(1, sizeof(struct man_node));
1.2       kristaps  180:        m->first = m->last;
                    181:        m->last->type = MAN_ROOT;
                    182:        m->next = MAN_NEXT_CHILD;
                    183: }
                    184:
                    185:
1.1       kristaps  186: static int
                    187: man_node_append(struct man *man, struct man_node *p)
                    188: {
                    189:
                    190:        assert(man->last);
                    191:        assert(man->first);
                    192:        assert(MAN_ROOT != p->type);
                    193:
                    194:        switch (man->next) {
                    195:        case (MAN_NEXT_SIBLING):
                    196:                man->last->next = p;
                    197:                p->prev = man->last;
                    198:                p->parent = man->last->parent;
                    199:                break;
                    200:        case (MAN_NEXT_CHILD):
                    201:                man->last->child = p;
                    202:                p->parent = man->last;
                    203:                break;
                    204:        default:
                    205:                abort();
                    206:                /* NOTREACHED */
                    207:        }
1.22      kristaps  208:
                    209:        p->parent->nchild++;
1.1       kristaps  210:
1.29      kristaps  211:        if ( ! man_valid_pre(man, p))
                    212:                return(0);
                    213:
                    214:        switch (p->type) {
                    215:        case (MAN_HEAD):
                    216:                assert(MAN_BLOCK == p->parent->type);
                    217:                p->parent->head = p;
                    218:                break;
                    219:        case (MAN_BODY):
                    220:                assert(MAN_BLOCK == p->parent->type);
                    221:                p->parent->body = p;
                    222:                break;
                    223:        default:
                    224:                break;
                    225:        }
                    226:
1.2       kristaps  227:        man->last = p;
                    228:
1.1       kristaps  229:        switch (p->type) {
1.2       kristaps  230:        case (MAN_TEXT):
                    231:                if ( ! man_valid_post(man))
                    232:                        return(0);
                    233:                if ( ! man_action_post(man))
                    234:                        return(0);
1.1       kristaps  235:                break;
                    236:        default:
                    237:                break;
                    238:        }
                    239:
                    240:        return(1);
                    241: }
                    242:
                    243:
                    244: static struct man_node *
1.16      kristaps  245: man_node_alloc(int line, int pos, enum man_type type, int tok)
1.1       kristaps  246: {
                    247:        struct man_node *p;
                    248:
1.45      kristaps  249:        p = mandoc_calloc(1, sizeof(struct man_node));
1.1       kristaps  250:        p->line = line;
                    251:        p->pos = pos;
                    252:        p->type = type;
1.16      kristaps  253:        p->tok = tok;
1.1       kristaps  254:        return(p);
                    255: }
                    256:
                    257:
                    258: int
1.30      kristaps  259: man_elem_alloc(struct man *m, int line, int pos, int tok)
1.1       kristaps  260: {
                    261:        struct man_node *p;
                    262:
1.16      kristaps  263:        p = man_node_alloc(line, pos, MAN_ELEM, tok);
1.30      kristaps  264:        if ( ! man_node_append(m, p))
                    265:                return(0);
                    266:        m->next = MAN_NEXT_CHILD;
                    267:        return(1);
1.1       kristaps  268: }
                    269:
                    270:
                    271: int
1.29      kristaps  272: man_head_alloc(struct man *m, int line, int pos, int tok)
                    273: {
                    274:        struct man_node *p;
                    275:
                    276:        p = man_node_alloc(line, pos, MAN_HEAD, tok);
                    277:        if ( ! man_node_append(m, p))
                    278:                return(0);
                    279:        m->next = MAN_NEXT_CHILD;
                    280:        return(1);
                    281: }
                    282:
                    283:
                    284: int
                    285: man_body_alloc(struct man *m, int line, int pos, int tok)
                    286: {
                    287:        struct man_node *p;
                    288:
                    289:        p = man_node_alloc(line, pos, MAN_BODY, tok);
                    290:        if ( ! man_node_append(m, p))
                    291:                return(0);
                    292:        m->next = MAN_NEXT_CHILD;
                    293:        return(1);
                    294: }
                    295:
                    296:
                    297: int
                    298: man_block_alloc(struct man *m, int line, int pos, int tok)
                    299: {
                    300:        struct man_node *p;
                    301:
                    302:        p = man_node_alloc(line, pos, MAN_BLOCK, tok);
                    303:        if ( ! man_node_append(m, p))
                    304:                return(0);
                    305:        m->next = MAN_NEXT_CHILD;
                    306:        return(1);
                    307: }
                    308:
                    309:
1.31      kristaps  310: static int
                    311: pstring(struct man *m, int line, int pos,
                    312:                const char *p, size_t len)
1.1       kristaps  313: {
1.31      kristaps  314:        struct man_node *n;
                    315:        size_t           sv;
1.1       kristaps  316:
1.31      kristaps  317:        n = man_node_alloc(line, pos, MAN_TEXT, -1);
1.45      kristaps  318:        n->string = mandoc_malloc(len + 1);
1.31      kristaps  319:        sv = strlcpy(n->string, p, len + 1);
                    320:
                    321:        /* Prohibit truncation. */
                    322:        assert(sv < len + 1);
                    323:
                    324:        if ( ! man_node_append(m, n))
1.30      kristaps  325:                return(0);
                    326:        m->next = MAN_NEXT_SIBLING;
                    327:        return(1);
1.1       kristaps  328: }
                    329:
                    330:
1.31      kristaps  331: int
                    332: man_word_alloc(struct man *m, int line, int pos, const char *word)
                    333: {
                    334:
                    335:        return(pstring(m, line, pos, word, strlen(word)));
                    336: }
                    337:
                    338:
1.1       kristaps  339: void
                    340: man_node_free(struct man_node *p)
                    341: {
                    342:
                    343:        if (p->string)
                    344:                free(p->string);
1.24      kristaps  345:        if (p->parent)
                    346:                p->parent->nchild--;
1.1       kristaps  347:        free(p);
                    348: }
                    349:
                    350:
                    351: void
                    352: man_node_freelist(struct man_node *p)
                    353: {
1.37      kristaps  354:        struct man_node *n;
1.1       kristaps  355:
                    356:        if (p->child)
                    357:                man_node_freelist(p->child);
1.24      kristaps  358:        assert(0 == p->nchild);
1.37      kristaps  359:        n = p->next;
1.1       kristaps  360:        man_node_free(p);
1.37      kristaps  361:        if (n)
                    362:                man_node_freelist(n);
1.1       kristaps  363: }
                    364:
                    365:
                    366: static int
                    367: man_ptext(struct man *m, int line, char *buf)
                    368: {
1.31      kristaps  369:        int              i, j;
1.49      kristaps  370:        char             sv;
1.31      kristaps  371:
1.35      kristaps  372:        /* Literal free-form text whitespace is preserved. */
                    373:
                    374:        if (MAN_LITERAL & m->flags) {
                    375:                if ( ! man_word_alloc(m, line, 0, buf))
                    376:                        return(0);
                    377:                goto descope;
                    378:        }
                    379:
1.31      kristaps  380:        /* First de-chunk and allocate words. */
                    381:
                    382:        for (i = 0; ' ' == buf[i]; i++)
                    383:                /* Skip leading whitespace. */ ;
1.48      kristaps  384:
1.49      kristaps  385:        if ('\0' == buf[i]) {
                    386:                /* Trailing whitespace? */
                    387:                if (i && ' ' == buf[i - 1])
                    388:                        if ( ! man_pwarn(m, line, i - 1, WTSPACE))
                    389:                                return(0);
1.31      kristaps  390:                if ( ! pstring(m, line, 0, &buf[i], 0))
                    391:                        return(0);
                    392:                goto descope;
                    393:        }
                    394:
                    395:        for (j = i; buf[i]; i++) {
                    396:                if (' ' != buf[i])
                    397:                        continue;
                    398:
                    399:                /* Escaped whitespace. */
                    400:                if (i && ' ' == buf[i] && '\\' == buf[i - 1])
                    401:                        continue;
1.1       kristaps  402:
1.49      kristaps  403:                sv = buf[i];
                    404:                buf[i++] = '\0';
                    405:
1.31      kristaps  406:                if ( ! pstring(m, line, j, &buf[j], (size_t)(i - j)))
                    407:                        return(0);
1.29      kristaps  408:
1.49      kristaps  409:                /* Trailing whitespace?  Check at overwritten byte. */
                    410:
                    411:                if (' ' == sv && '\0' == buf[i])
                    412:                        if ( ! man_pwarn(m, line, i - 1, WTSPACE))
                    413:                                return(0);
                    414:
1.31      kristaps  415:                for ( ; ' ' == buf[i]; i++)
                    416:                        /* Skip trailing whitespace. */ ;
1.30      kristaps  417:
1.31      kristaps  418:                j = i;
1.49      kristaps  419:
                    420:                /* Trailing whitespace? */
                    421:
                    422:                if (' ' == buf[i - 1] && '\0' == buf[i])
                    423:                        if ( ! man_pwarn(m, line, i - 1, WTSPACE))
                    424:                                return(0);
                    425:
                    426:                if ('\0' == buf[i])
1.31      kristaps  427:                        break;
                    428:        }
                    429:
                    430:        if (j != i && ! pstring(m, line, j, &buf[j], (size_t)(i - j)))
1.1       kristaps  431:                return(0);
1.31      kristaps  432:
                    433: descope:
1.11      kristaps  434:
                    435:        /*
1.29      kristaps  436:         * Co-ordinate what happens with having a next-line scope open:
                    437:         * first close out the element scope (if applicable), then close
                    438:         * out the block scope (also if applicable).
1.11      kristaps  439:         */
                    440:
1.29      kristaps  441:        if (MAN_ELINE & m->flags) {
                    442:                m->flags &= ~MAN_ELINE;
                    443:                if ( ! man_unscope(m, m->last->parent))
                    444:                        return(0);
                    445:        }
                    446:
                    447:        if ( ! (MAN_BLINE & m->flags))
1.11      kristaps  448:                return(1);
1.29      kristaps  449:        m->flags &= ~MAN_BLINE;
1.11      kristaps  450:
1.29      kristaps  451:        if ( ! man_unscope(m, m->last->parent))
1.11      kristaps  452:                return(0);
1.29      kristaps  453:        return(man_body_alloc(m, line, 0, m->last->tok));
1.1       kristaps  454: }
                    455:
                    456:
1.43      kristaps  457: static int
                    458: macrowarn(struct man *m, int ln, const char *buf)
                    459: {
                    460:        if ( ! (MAN_IGN_MACRO & m->pflags))
                    461:                return(man_verr(m, ln, 0,
                    462:                                "unknown macro: %s%s",
                    463:                                buf, strlen(buf) > 3 ? "..." : ""));
                    464:        return(man_vwarn(m, ln, 0, "unknown macro: %s%s",
                    465:                                buf, strlen(buf) > 3 ? "..." : ""));
                    466: }
                    467:
                    468:
1.1       kristaps  469: int
                    470: man_pmacro(struct man *m, int ln, char *buf)
                    471: {
1.34      kristaps  472:        int              i, j, c, ppos, fl;
                    473:        char             mac[5];
                    474:        struct man_node *n;
1.1       kristaps  475:
                    476:        /* Comments and empties are quickly ignored. */
                    477:
1.29      kristaps  478:        fl = m->flags;
1.11      kristaps  479:
1.46      kristaps  480:        if ('\0' == buf[1])
                    481:                return(1);
1.1       kristaps  482:
1.9       kristaps  483:        i = 1;
                    484:
                    485:        if (' ' == buf[i]) {
                    486:                i++;
1.1       kristaps  487:                while (buf[i] && ' ' == buf[i])
                    488:                        i++;
1.48      kristaps  489:                if ('\0' == buf[i])
1.11      kristaps  490:                        goto out;
1.1       kristaps  491:        }
                    492:
1.10      kristaps  493:        ppos = i;
                    494:
1.1       kristaps  495:        /* Copy the first word into a nil-terminated buffer. */
                    496:
1.10      kristaps  497:        for (j = 0; j < 4; j++, i++) {
1.48      kristaps  498:                if ('\0' == (mac[j] = buf[i]))
1.1       kristaps  499:                        break;
1.10      kristaps  500:                else if (' ' == buf[i])
1.1       kristaps  501:                        break;
1.38      kristaps  502:
                    503:                /* Check for invalid characters. */
                    504:
                    505:                if (isgraph((u_char)buf[i]))
                    506:                        continue;
                    507:                return(man_perr(m, ln, i, WNPRINT));
1.1       kristaps  508:        }
                    509:
1.46      kristaps  510:        mac[j] = '\0';
1.1       kristaps  511:
1.9       kristaps  512:        if (j == 4 || j < 1) {
1.7       kristaps  513:                if ( ! (MAN_IGN_MACRO & m->pflags)) {
1.29      kristaps  514:                        (void)man_perr(m, ln, ppos, WMACROFORM);
1.7       kristaps  515:                        goto err;
                    516:                }
1.29      kristaps  517:                if ( ! man_pwarn(m, ln, ppos, WMACROFORM))
1.7       kristaps  518:                        goto err;
1.12      kristaps  519:                return(1);
1.7       kristaps  520:        }
1.1       kristaps  521:
1.40      kristaps  522:        if (MAN_MAX == (c = man_hash_find(mac))) {
1.43      kristaps  523:                if ( ! macrowarn(m, ln, mac))
1.7       kristaps  524:                        goto err;
1.12      kristaps  525:                return(1);
1.1       kristaps  526:        }
                    527:
                    528:        /* The macro is sane.  Jump to the next word. */
                    529:
                    530:        while (buf[i] && ' ' == buf[i])
                    531:                i++;
                    532:
1.48      kristaps  533:        /* Trailing whitespace? */
                    534:
                    535:        if ('\0' == buf[i] && ' ' == buf[i - 1])
                    536:                if ( ! man_pwarn(m, ln, i - 1, WTSPACE))
                    537:                        goto err;
                    538:
1.50      kristaps  539:        /*
1.51      kristaps  540:         * Remove prior ELINE macro, as it's being clobbering by a new
                    541:         * macro.  Note that NSCOPED macros do not close out ELINE
                    542:         * macros---they don't print text---so we let those slip by.
1.50      kristaps  543:         */
1.34      kristaps  544:
1.51      kristaps  545:        if ( ! (MAN_NSCOPED & man_macros[c].flags) &&
                    546:                        m->flags & MAN_ELINE) {
                    547:                assert(MAN_TEXT != m->last->type);
                    548:
                    549:                /*
                    550:                 * This occurs in the following construction:
                    551:                 *   .B
                    552:                 *   .br
                    553:                 *   .B
                    554:                 *   .br
                    555:                 *   I hate man macros.
                    556:                 * Flat-out disallow this madness.
                    557:                 */
                    558:                if (MAN_NSCOPED & man_macros[m->last->tok].flags)
                    559:                        return(man_perr(m, ln, ppos, WLNSCOPE));
                    560:
1.34      kristaps  561:                n = m->last;
1.51      kristaps  562:
                    563:                assert(n);
1.34      kristaps  564:                assert(NULL == n->child);
1.37      kristaps  565:                assert(0 == n->nchild);
1.51      kristaps  566:
1.34      kristaps  567:                if ( ! man_nwarn(m, n, WLNSCOPE))
                    568:                        return(0);
                    569:
1.51      kristaps  570:                man_node_unlink(m, n);
1.34      kristaps  571:                man_node_free(n);
                    572:                m->flags &= ~MAN_ELINE;
                    573:        }
                    574:
1.1       kristaps  575:        /* Begin recursive parse sequence. */
                    576:
1.29      kristaps  577:        assert(man_macros[c].fp);
                    578:
                    579:        if ( ! (*man_macros[c].fp)(m, c, ln, ppos, &i, buf))
1.1       kristaps  580:                goto err;
                    581:
1.11      kristaps  582: out:
1.50      kristaps  583:        /*
                    584:         * We weren't in a block-line scope when entering the
                    585:         * above-parsed macro, so return.
                    586:         */
                    587:
                    588:        if ( ! (MAN_BLINE & fl)) {
                    589:                m->flags &= ~MAN_ILINE;
1.29      kristaps  590:                return(1);
1.50      kristaps  591:        }
                    592:
                    593:        /*
                    594:         * If we're in a block scope, then allow this macro to slip by
                    595:         * without closing scope around it.
                    596:         */
                    597:
                    598:        if (MAN_ILINE & m->flags) {
                    599:                m->flags &= ~MAN_ILINE;
                    600:                return(1);
                    601:        }
1.29      kristaps  602:
                    603:        /*
                    604:         * If we've opened a new next-line element scope, then return
                    605:         * now, as the next line will close out the block scope.
                    606:         */
                    607:
                    608:        if (MAN_ELINE & m->flags)
                    609:                return(1);
                    610:
                    611:        /* Close out the block scope opened in the prior line.  */
1.11      kristaps  612:
1.29      kristaps  613:        assert(MAN_BLINE & m->flags);
                    614:        m->flags &= ~MAN_BLINE;
1.11      kristaps  615:
1.29      kristaps  616:        if ( ! man_unscope(m, m->last->parent))
                    617:                return(0);
                    618:        return(man_body_alloc(m, ln, 0, m->last->tok));
1.1       kristaps  619:
                    620: err:   /* Error out. */
                    621:
1.2       kristaps  622:        m->flags |= MAN_HALT;
1.1       kristaps  623:        return(0);
                    624: }
1.3       kristaps  625:
1.4       kristaps  626:
                    627: int
                    628: man_verr(struct man *man, int ln, int pos, const char *fmt, ...)
                    629: {
                    630:        char             buf[256];
                    631:        va_list          ap;
                    632:
                    633:        if (NULL == man->cb.man_err)
                    634:                return(0);
                    635:
                    636:        va_start(ap, fmt);
                    637:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
                    638:        va_end(ap);
                    639:        return((*man->cb.man_err)(man->data, ln, pos, buf));
                    640: }
                    641:
                    642:
                    643: int
                    644: man_vwarn(struct man *man, int ln, int pos, const char *fmt, ...)
                    645: {
                    646:        char             buf[256];
                    647:        va_list          ap;
                    648:
                    649:        if (NULL == man->cb.man_warn)
                    650:                return(0);
                    651:
                    652:        va_start(ap, fmt);
                    653:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
                    654:        va_end(ap);
                    655:        return((*man->cb.man_warn)(man->data, ln, pos, buf));
                    656: }
                    657:
                    658:
1.23      kristaps  659: int
1.27      kristaps  660: man_err(struct man *m, int line, int pos, int iserr, enum merr type)
1.23      kristaps  661: {
                    662:        const char       *p;
                    663:
1.27      kristaps  664:        p = __man_merrnames[(int)type];
1.23      kristaps  665:        assert(p);
                    666:
                    667:        if (iserr)
                    668:                return(man_verr(m, line, pos, p));
                    669:
                    670:        return(man_vwarn(m, line, pos, p));
1.51      kristaps  671: }
                    672:
                    673:
                    674: void
                    675: man_node_unlink(struct man *m, struct man_node *n)
                    676: {
                    677:
                    678:        if (n->prev) {
                    679:                n->prev->next = n->next;
                    680:                if (m->last == n) {
                    681:                        assert(NULL == n->next);
                    682:                        m->last = n->prev;
                    683:                        m->next = MAN_NEXT_SIBLING;
                    684:                }
                    685:        } else {
                    686:                n->parent->child = n->next;
                    687:                if (m->last == n) {
                    688:                        assert(NULL == n->next);
                    689:                        m->last = n->parent;
                    690:                        m->next = MAN_NEXT_CHILD;
                    691:                }
                    692:        }
                    693:
                    694:        if (n->next)
                    695:                n->next->prev = n->prev;
1.23      kristaps  696: }

CVSweb