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Annotation of mandoc/mdoc.c, Revision 1.219

1.219   ! schwarze    1: /*     $Id: mdoc.c,v 1.218 2014/07/06 19:09:00 schwarze Exp $ */
1.1       kristaps    2: /*
1.182     schwarze    3:  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.208     schwarze    4:  * Copyright (c) 2010, 2012, 2013, 2014 Ingo Schwarze <schwarze@openbsd.org>
1.1       kristaps    5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
1.75      kristaps    7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
1.1       kristaps    9:  *
1.75      kristaps   10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     15:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     16:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1       kristaps   17:  */
1.114     kristaps   18: #ifdef HAVE_CONFIG_H
                     19: #include "config.h"
                     20: #endif
                     21:
1.106     kristaps   22: #include <sys/types.h>
                     23:
1.1       kristaps   24: #include <assert.h>
1.211     schwarze   25: #include <ctype.h>
1.1       kristaps   26: #include <stdarg.h>
1.73      kristaps   27: #include <stdio.h>
1.1       kristaps   28: #include <stdlib.h>
                     29: #include <string.h>
1.120     kristaps   30: #include <time.h>
1.1       kristaps   31:
1.187     kristaps   32: #include "mdoc.h"
1.136     kristaps   33: #include "mandoc.h"
1.209     schwarze   34: #include "mandoc_aux.h"
1.70      kristaps   35: #include "libmdoc.h"
1.113     kristaps   36: #include "libmandoc.h"
1.1       kristaps   37:
1.216     schwarze   38: const  char *const __mdoc_macronames[MDOC_MAX + 1] = {
1.82      kristaps   39:        "Ap",           "Dd",           "Dt",           "Os",
1.1       kristaps   40:        "Sh",           "Ss",           "Pp",           "D1",
                     41:        "Dl",           "Bd",           "Ed",           "Bl",
                     42:        "El",           "It",           "Ad",           "An",
                     43:        "Ar",           "Cd",           "Cm",           "Dv",
                     44:        "Er",           "Ev",           "Ex",           "Fa",
                     45:        "Fd",           "Fl",           "Fn",           "Ft",
                     46:        "Ic",           "In",           "Li",           "Nd",
                     47:        "Nm",           "Op",           "Ot",           "Pa",
                     48:        "Rv",           "St",           "Va",           "Vt",
1.114     kristaps   49:        "Xr",           "%A",           "%B",           "%D",
                     50:        "%I",           "%J",           "%N",           "%O",
                     51:        "%P",           "%R",           "%T",           "%V",
1.1       kristaps   52:        "Ac",           "Ao",           "Aq",           "At",
                     53:        "Bc",           "Bf",           "Bo",           "Bq",
                     54:        "Bsx",          "Bx",           "Db",           "Dc",
                     55:        "Do",           "Dq",           "Ec",           "Ef",
                     56:        "Em",           "Eo",           "Fx",           "Ms",
                     57:        "No",           "Ns",           "Nx",           "Ox",
                     58:        "Pc",           "Pf",           "Po",           "Pq",
                     59:        "Qc",           "Ql",           "Qo",           "Qq",
                     60:        "Re",           "Rs",           "Sc",           "So",
                     61:        "Sq",           "Sm",           "Sx",           "Sy",
                     62:        "Tn",           "Ux",           "Xc",           "Xo",
                     63:        "Fo",           "Fc",           "Oo",           "Oc",
                     64:        "Bk",           "Ek",           "Bt",           "Hf",
1.82      kristaps   65:        "Fr",           "Ud",           "Lb",           "Lp",
                     66:        "Lk",           "Mt",           "Brq",          "Bro",
1.114     kristaps   67:        "Brc",          "%C",           "Es",           "En",
                     68:        "Dx",           "%Q",           "br",           "sp",
1.216     schwarze   69:        "%U",           "Ta",           "ll",           "text",
1.1       kristaps   70:        };
                     71:
1.213     schwarze   72: const  char *const __mdoc_argnames[MDOC_ARG_MAX] = {
1.1       kristaps   73:        "split",                "nosplit",              "ragged",
1.213     schwarze   74:        "unfilled",             "literal",              "file",
                     75:        "offset",               "bullet",               "dash",
                     76:        "hyphen",               "item",                 "enum",
                     77:        "tag",                  "diag",                 "hang",
                     78:        "ohang",                "inset",                "column",
                     79:        "width",                "compact",              "std",
1.52      kristaps   80:        "filled",               "words",                "emphasis",
1.108     kristaps   81:        "symbolic",             "nested",               "centered"
1.1       kristaps   82:        };
                     83:
                     84: const  char * const *mdoc_macronames = __mdoc_macronames;
                     85: const  char * const *mdoc_argnames = __mdoc_argnames;
                     86:
1.121     kristaps   87: static void              mdoc_node_free(struct mdoc_node *);
1.213     schwarze   88: static void              mdoc_node_unlink(struct mdoc *,
1.121     kristaps   89:                                struct mdoc_node *);
1.73      kristaps   90: static void              mdoc_free1(struct mdoc *);
1.113     kristaps   91: static void              mdoc_alloc1(struct mdoc *);
1.213     schwarze   92: static struct mdoc_node *node_alloc(struct mdoc *, int, int,
1.117     kristaps   93:                                enum mdoct, enum mdoc_type);
1.213     schwarze   94: static int               node_append(struct mdoc *,
1.71      kristaps   95:                                struct mdoc_node *);
1.193     kristaps   96: #if 0
1.191     kristaps   97: static int               mdoc_preptext(struct mdoc *, int, char *, int);
1.193     kristaps   98: #endif
1.149     kristaps   99: static int               mdoc_ptext(struct mdoc *, int, char *, int);
                    100: static int               mdoc_pmacro(struct mdoc *, int, char *, int);
1.88      kristaps  101:
1.213     schwarze  102:
1.1       kristaps  103: const struct mdoc_node *
1.203     schwarze  104: mdoc_node(const struct mdoc *mdoc)
1.1       kristaps  105: {
                    106:
1.203     schwarze  107:        assert( ! (MDOC_HALT & mdoc->flags));
                    108:        return(mdoc->first);
1.1       kristaps  109: }
                    110:
1.37      kristaps  111: const struct mdoc_meta *
1.203     schwarze  112: mdoc_meta(const struct mdoc *mdoc)
1.37      kristaps  113: {
                    114:
1.203     schwarze  115:        assert( ! (MDOC_HALT & mdoc->flags));
                    116:        return(&mdoc->meta);
1.37      kristaps  117: }
                    118:
1.85      kristaps  119: /*
                    120:  * Frees volatile resources (parse tree, meta-data, fields).
                    121:  */
1.73      kristaps  122: static void
                    123: mdoc_free1(struct mdoc *mdoc)
1.67      kristaps  124: {
                    125:
                    126:        if (mdoc->first)
1.121     kristaps  127:                mdoc_node_delete(mdoc, mdoc->first);
1.67      kristaps  128:        if (mdoc->meta.title)
                    129:                free(mdoc->meta.title);
                    130:        if (mdoc->meta.os)
                    131:                free(mdoc->meta.os);
                    132:        if (mdoc->meta.name)
                    133:                free(mdoc->meta.name);
                    134:        if (mdoc->meta.arch)
                    135:                free(mdoc->meta.arch);
                    136:        if (mdoc->meta.vol)
                    137:                free(mdoc->meta.vol);
1.133     kristaps  138:        if (mdoc->meta.msec)
                    139:                free(mdoc->meta.msec);
1.183     kristaps  140:        if (mdoc->meta.date)
                    141:                free(mdoc->meta.date);
1.73      kristaps  142: }
                    143:
1.85      kristaps  144: /*
                    145:  * Allocate all volatile resources (parse tree, meta-data, fields).
                    146:  */
1.113     kristaps  147: static void
1.73      kristaps  148: mdoc_alloc1(struct mdoc *mdoc)
                    149: {
1.67      kristaps  150:
1.112     kristaps  151:        memset(&mdoc->meta, 0, sizeof(struct mdoc_meta));
1.67      kristaps  152:        mdoc->flags = 0;
1.85      kristaps  153:        mdoc->lastnamed = mdoc->lastsec = SEC_NONE;
1.113     kristaps  154:        mdoc->last = mandoc_calloc(1, sizeof(struct mdoc_node));
1.70      kristaps  155:        mdoc->first = mdoc->last;
1.67      kristaps  156:        mdoc->last->type = MDOC_ROOT;
1.196     schwarze  157:        mdoc->last->tok = MDOC_MAX;
1.67      kristaps  158:        mdoc->next = MDOC_NEXT_CHILD;
1.73      kristaps  159: }
                    160:
                    161: /*
1.85      kristaps  162:  * Free up volatile resources (see mdoc_free1()) then re-initialises the
                    163:  * data with mdoc_alloc1().  After invocation, parse data has been reset
                    164:  * and the parser is ready for re-invocation on a new tree; however,
                    165:  * cross-parse non-volatile data is kept intact.
1.73      kristaps  166:  */
1.113     kristaps  167: void
1.73      kristaps  168: mdoc_reset(struct mdoc *mdoc)
                    169: {
                    170:
                    171:        mdoc_free1(mdoc);
1.113     kristaps  172:        mdoc_alloc1(mdoc);
1.67      kristaps  173: }
                    174:
1.68      kristaps  175: /*
1.85      kristaps  176:  * Completely free up all volatile and non-volatile parse resources.
                    177:  * After invocation, the pointer is no longer usable.
1.68      kristaps  178:  */
1.67      kristaps  179: void
1.38      kristaps  180: mdoc_free(struct mdoc *mdoc)
1.34      kristaps  181: {
                    182:
1.73      kristaps  183:        mdoc_free1(mdoc);
1.1       kristaps  184:        free(mdoc);
                    185: }
                    186:
1.85      kristaps  187: /*
1.213     schwarze  188:  * Allocate volatile and non-volatile parse resources.
1.85      kristaps  189:  */
1.1       kristaps  190: struct mdoc *
1.208     schwarze  191: mdoc_alloc(struct roff *roff, struct mparse *parse,
                    192:        char *defos, int quick)
1.1       kristaps  193: {
                    194:        struct mdoc     *p;
                    195:
1.113     kristaps  196:        p = mandoc_calloc(1, sizeof(struct mdoc));
                    197:
1.185     kristaps  198:        p->parse = parse;
1.197     schwarze  199:        p->defos = defos;
1.208     schwarze  200:        p->quick = quick;
1.189     kristaps  201:        p->roff = roff;
1.73      kristaps  202:
1.113     kristaps  203:        mdoc_hash_init();
                    204:        mdoc_alloc1(p);
                    205:        return(p);
1.1       kristaps  206: }
                    207:
1.68      kristaps  208: /*
                    209:  * Climb back up the parse tree, validating open scopes.  Mostly calls
1.85      kristaps  210:  * through to macro_end() in macro.c.
1.68      kristaps  211:  */
1.1       kristaps  212: int
1.203     schwarze  213: mdoc_endparse(struct mdoc *mdoc)
1.20      kristaps  214: {
                    215:
1.203     schwarze  216:        assert( ! (MDOC_HALT & mdoc->flags));
                    217:        if (mdoc_macroend(mdoc))
1.20      kristaps  218:                return(1);
1.203     schwarze  219:        mdoc->flags |= MDOC_HALT;
1.72      kristaps  220:        return(0);
1.181     kristaps  221: }
                    222:
                    223: int
1.203     schwarze  224: mdoc_addeqn(struct mdoc *mdoc, const struct eqn *ep)
1.181     kristaps  225: {
                    226:        struct mdoc_node *n;
                    227:
1.203     schwarze  228:        assert( ! (MDOC_HALT & mdoc->flags));
1.181     kristaps  229:
1.203     schwarze  230:        n = node_alloc(mdoc, ep->ln, ep->pos, MDOC_MAX, MDOC_EQN);
1.181     kristaps  231:        n->eqn = ep;
                    232:
1.203     schwarze  233:        if ( ! node_append(mdoc, n))
1.181     kristaps  234:                return(0);
                    235:
1.203     schwarze  236:        mdoc->next = MDOC_NEXT_SIBLING;
1.181     kristaps  237:        return(1);
1.20      kristaps  238: }
                    239:
1.175     kristaps  240: int
1.203     schwarze  241: mdoc_addspan(struct mdoc *mdoc, const struct tbl_span *sp)
1.175     kristaps  242: {
1.180     kristaps  243:        struct mdoc_node *n;
1.175     kristaps  244:
1.203     schwarze  245:        assert( ! (MDOC_HALT & mdoc->flags));
1.175     kristaps  246:
1.203     schwarze  247:        n = node_alloc(mdoc, sp->line, 0, MDOC_MAX, MDOC_TBL);
1.180     kristaps  248:        n->span = sp;
                    249:
1.203     schwarze  250:        if ( ! node_append(mdoc, n))
1.180     kristaps  251:                return(0);
                    252:
1.203     schwarze  253:        mdoc->next = MDOC_NEXT_SIBLING;
1.180     kristaps  254:        return(1);
1.175     kristaps  255: }
                    256:
1.50      kristaps  257: /*
1.53      kristaps  258:  * Main parse routine.  Parses a single line -- really just hands off to
1.123     kristaps  259:  * the macro (mdoc_pmacro()) or text parser (mdoc_ptext()).
1.50      kristaps  260:  */
1.20      kristaps  261: int
1.203     schwarze  262: mdoc_parseln(struct mdoc *mdoc, int ln, char *buf, int offs)
1.1       kristaps  263: {
                    264:
1.203     schwarze  265:        assert( ! (MDOC_HALT & mdoc->flags));
1.50      kristaps  266:
1.203     schwarze  267:        mdoc->flags |= MDOC_NEWLINE;
1.153     schwarze  268:
                    269:        /*
                    270:         * Let the roff nS register switch SYNOPSIS mode early,
                    271:         * such that the parser knows at all times
                    272:         * whether this mode is on or off.
                    273:         * Note that this mode is also switched by the Sh macro.
                    274:         */
1.204     schwarze  275:        if (roff_getreg(mdoc->roff, "nS"))
                    276:                mdoc->flags |= MDOC_SYNOPSIS;
                    277:        else
                    278:                mdoc->flags &= ~MDOC_SYNOPSIS;
1.153     schwarze  279:
1.203     schwarze  280:        return(roff_getcontrol(mdoc->roff, buf, &offs) ?
1.213     schwarze  281:            mdoc_pmacro(mdoc, ln, buf, offs) :
                    282:            mdoc_ptext(mdoc, ln, buf, offs));
1.1       kristaps  283: }
                    284:
1.88      kristaps  285: int
1.148     kristaps  286: mdoc_macro(MACRO_PROT_ARGS)
1.88      kristaps  287: {
1.122     kristaps  288:        assert(tok < MDOC_MAX);
                    289:
                    290:        /* If we're in the body, deny prologue calls. */
1.117     kristaps  291:
1.213     schwarze  292:        if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
                    293:            MDOC_PBODY & mdoc->flags) {
1.215     schwarze  294:                mandoc_vmsg(MANDOCERR_PROLOG_ONLY, mdoc->parse,
                    295:                    line, ppos, "%s", mdoc_macronames[tok]);
1.174     kristaps  296:                return(1);
                    297:        }
1.122     kristaps  298:
                    299:        /* If we're in the prologue, deny "body" macros.  */
                    300:
1.213     schwarze  301:        if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
                    302:             ! (MDOC_PBODY & mdoc->flags)) {
1.215     schwarze  303:                mandoc_vmsg(MANDOCERR_PROLOG_BAD, mdoc->parse,
                    304:                    line, ppos, "%s", mdoc_macronames[tok]);
1.203     schwarze  305:                if (NULL == mdoc->meta.msec)
                    306:                        mdoc->meta.msec = mandoc_strdup("1");
                    307:                if (NULL == mdoc->meta.title)
                    308:                        mdoc->meta.title = mandoc_strdup("UNKNOWN");
                    309:                if (NULL == mdoc->meta.vol)
                    310:                        mdoc->meta.vol = mandoc_strdup("LOCAL");
                    311:                if (NULL == mdoc->meta.os)
                    312:                        mdoc->meta.os = mandoc_strdup("LOCAL");
                    313:                if (NULL == mdoc->meta.date)
                    314:                        mdoc->meta.date = mandoc_normdate
                    315:                                (mdoc->parse, NULL, line, ppos);
                    316:                mdoc->flags |= MDOC_PBODY;
1.120     kristaps  317:        }
1.88      kristaps  318:
1.203     schwarze  319:        return((*mdoc_macros[tok].fp)(mdoc, tok, line, ppos, pos, buf));
1.73      kristaps  320: }
                    321:
                    322:
                    323: static int
                    324: node_append(struct mdoc *mdoc, struct mdoc_node *p)
1.1       kristaps  325: {
                    326:
1.25      kristaps  327:        assert(mdoc->last);
                    328:        assert(mdoc->first);
                    329:        assert(MDOC_ROOT != p->type);
1.1       kristaps  330:
1.13      kristaps  331:        switch (mdoc->next) {
1.213     schwarze  332:        case MDOC_NEXT_SIBLING:
1.6       kristaps  333:                mdoc->last->next = p;
                    334:                p->prev = mdoc->last;
1.13      kristaps  335:                p->parent = mdoc->last->parent;
1.1       kristaps  336:                break;
1.213     schwarze  337:        case MDOC_NEXT_CHILD:
1.13      kristaps  338:                mdoc->last->child = p;
1.1       kristaps  339:                p->parent = mdoc->last;
                    340:                break;
                    341:        default:
1.13      kristaps  342:                abort();
                    343:                /* NOTREACHED */
1.1       kristaps  344:        }
                    345:
1.86      kristaps  346:        p->parent->nchild++;
                    347:
1.172     kristaps  348:        /*
                    349:         * Copy over the normalised-data pointer of our parent.  Not
                    350:         * everybody has one, but copying a null pointer is fine.
                    351:         */
                    352:
                    353:        switch (p->type) {
1.213     schwarze  354:        case MDOC_BODY:
1.202     schwarze  355:                if (ENDBODY_NOT != p->end)
                    356:                        break;
1.172     kristaps  357:                /* FALLTHROUGH */
1.213     schwarze  358:        case MDOC_TAIL:
1.172     kristaps  359:                /* FALLTHROUGH */
1.213     schwarze  360:        case MDOC_HEAD:
1.172     kristaps  361:                p->norm = p->parent->norm;
                    362:                break;
                    363:        default:
                    364:                break;
                    365:        }
                    366:
1.23      kristaps  367:        if ( ! mdoc_valid_pre(mdoc, p))
                    368:                return(0);
1.27      kristaps  369:
                    370:        switch (p->type) {
1.213     schwarze  371:        case MDOC_HEAD:
1.27      kristaps  372:                assert(MDOC_BLOCK == p->parent->type);
1.53      kristaps  373:                p->parent->head = p;
1.27      kristaps  374:                break;
1.213     schwarze  375:        case MDOC_TAIL:
1.27      kristaps  376:                assert(MDOC_BLOCK == p->parent->type);
1.53      kristaps  377:                p->parent->tail = p;
1.27      kristaps  378:                break;
1.213     schwarze  379:        case MDOC_BODY:
1.152     schwarze  380:                if (p->end)
                    381:                        break;
1.27      kristaps  382:                assert(MDOC_BLOCK == p->parent->type);
1.53      kristaps  383:                p->parent->body = p;
1.27      kristaps  384:                break;
                    385:        default:
                    386:                break;
                    387:        }
                    388:
1.1       kristaps  389:        mdoc->last = p;
1.71      kristaps  390:
                    391:        switch (p->type) {
1.213     schwarze  392:        case MDOC_TBL:
1.176     kristaps  393:                /* FALLTHROUGH */
1.213     schwarze  394:        case MDOC_TEXT:
1.71      kristaps  395:                if ( ! mdoc_valid_post(mdoc))
                    396:                        return(0);
                    397:                break;
                    398:        default:
                    399:                break;
                    400:        }
                    401:
1.23      kristaps  402:        return(1);
1.1       kristaps  403: }
                    404:
1.45      kristaps  405: static struct mdoc_node *
1.213     schwarze  406: node_alloc(struct mdoc *mdoc, int line, int pos,
1.117     kristaps  407:                enum mdoct tok, enum mdoc_type type)
1.45      kristaps  408: {
1.46      kristaps  409:        struct mdoc_node *p;
                    410:
1.113     kristaps  411:        p = mandoc_calloc(1, sizeof(struct mdoc_node));
1.203     schwarze  412:        p->sec = mdoc->lastsec;
1.73      kristaps  413:        p->line = line;
                    414:        p->pos = pos;
1.206     schwarze  415:        p->lastline = line;
1.73      kristaps  416:        p->tok = tok;
1.118     kristaps  417:        p->type = type;
1.150     kristaps  418:
                    419:        /* Flag analysis. */
                    420:
1.203     schwarze  421:        if (MDOC_SYNOPSIS & mdoc->flags)
1.153     schwarze  422:                p->flags |= MDOC_SYNPRETTY;
                    423:        else
                    424:                p->flags &= ~MDOC_SYNPRETTY;
1.203     schwarze  425:        if (MDOC_NEWLINE & mdoc->flags)
1.130     kristaps  426:                p->flags |= MDOC_LINE;
1.203     schwarze  427:        mdoc->flags &= ~MDOC_NEWLINE;
1.150     kristaps  428:
1.46      kristaps  429:        return(p);
1.45      kristaps  430: }
                    431:
1.23      kristaps  432: int
1.203     schwarze  433: mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, enum mdoct tok)
1.17      kristaps  434: {
                    435:        struct mdoc_node *p;
                    436:
1.203     schwarze  437:        p = node_alloc(mdoc, line, pos, tok, MDOC_TAIL);
                    438:        if ( ! node_append(mdoc, p))
1.102     kristaps  439:                return(0);
1.203     schwarze  440:        mdoc->next = MDOC_NEXT_CHILD;
1.102     kristaps  441:        return(1);
1.17      kristaps  442: }
                    443:
1.23      kristaps  444: int
1.203     schwarze  445: mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, enum mdoct tok)
1.1       kristaps  446: {
                    447:        struct mdoc_node *p;
                    448:
1.203     schwarze  449:        assert(mdoc->first);
                    450:        assert(mdoc->last);
1.1       kristaps  451:
1.203     schwarze  452:        p = node_alloc(mdoc, line, pos, tok, MDOC_HEAD);
                    453:        if ( ! node_append(mdoc, p))
1.102     kristaps  454:                return(0);
1.203     schwarze  455:        mdoc->next = MDOC_NEXT_CHILD;
1.102     kristaps  456:        return(1);
1.1       kristaps  457: }
                    458:
1.23      kristaps  459: int
1.203     schwarze  460: mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, enum mdoct tok)
1.1       kristaps  461: {
                    462:        struct mdoc_node *p;
                    463:
1.203     schwarze  464:        p = node_alloc(mdoc, line, pos, tok, MDOC_BODY);
                    465:        if ( ! node_append(mdoc, p))
1.102     kristaps  466:                return(0);
1.203     schwarze  467:        mdoc->next = MDOC_NEXT_CHILD;
1.152     schwarze  468:        return(1);
                    469: }
                    470:
                    471: int
1.203     schwarze  472: mdoc_endbody_alloc(struct mdoc *mdoc, int line, int pos, enum mdoct tok,
1.152     schwarze  473:                struct mdoc_node *body, enum mdoc_endbody end)
                    474: {
                    475:        struct mdoc_node *p;
                    476:
1.203     schwarze  477:        p = node_alloc(mdoc, line, pos, tok, MDOC_BODY);
1.152     schwarze  478:        p->pending = body;
1.202     schwarze  479:        p->norm = body->norm;
1.152     schwarze  480:        p->end = end;
1.203     schwarze  481:        if ( ! node_append(mdoc, p))
1.152     schwarze  482:                return(0);
1.203     schwarze  483:        mdoc->next = MDOC_NEXT_SIBLING;
1.102     kristaps  484:        return(1);
1.1       kristaps  485: }
                    486:
1.23      kristaps  487: int
1.213     schwarze  488: mdoc_block_alloc(struct mdoc *mdoc, int line, int pos,
1.117     kristaps  489:                enum mdoct tok, struct mdoc_arg *args)
1.1       kristaps  490: {
                    491:        struct mdoc_node *p;
                    492:
1.203     schwarze  493:        p = node_alloc(mdoc, line, pos, tok, MDOC_BLOCK);
1.77      kristaps  494:        p->args = args;
                    495:        if (p->args)
1.53      kristaps  496:                (args->refcnt)++;
1.172     kristaps  497:
                    498:        switch (tok) {
1.213     schwarze  499:        case MDOC_Bd:
1.172     kristaps  500:                /* FALLTHROUGH */
1.213     schwarze  501:        case MDOC_Bf:
1.172     kristaps  502:                /* FALLTHROUGH */
1.213     schwarze  503:        case MDOC_Bl:
1.217     schwarze  504:                /* FALLTHROUGH */
                    505:        case MDOC_En:
1.173     kristaps  506:                /* FALLTHROUGH */
1.213     schwarze  507:        case MDOC_Rs:
1.172     kristaps  508:                p->norm = mandoc_calloc(1, sizeof(union mdoc_data));
                    509:                break;
                    510:        default:
                    511:                break;
                    512:        }
                    513:
1.203     schwarze  514:        if ( ! node_append(mdoc, p))
1.102     kristaps  515:                return(0);
1.203     schwarze  516:        mdoc->next = MDOC_NEXT_CHILD;
1.102     kristaps  517:        return(1);
1.1       kristaps  518: }
                    519:
1.23      kristaps  520: int
1.213     schwarze  521: mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos,
1.117     kristaps  522:                enum mdoct tok, struct mdoc_arg *args)
1.1       kristaps  523: {
                    524:        struct mdoc_node *p;
                    525:
1.203     schwarze  526:        p = node_alloc(mdoc, line, pos, tok, MDOC_ELEM);
1.77      kristaps  527:        p->args = args;
                    528:        if (p->args)
1.53      kristaps  529:                (args->refcnt)++;
1.172     kristaps  530:
                    531:        switch (tok) {
1.213     schwarze  532:        case MDOC_An:
1.172     kristaps  533:                p->norm = mandoc_calloc(1, sizeof(union mdoc_data));
                    534:                break;
                    535:        default:
                    536:                break;
                    537:        }
                    538:
1.203     schwarze  539:        if ( ! node_append(mdoc, p))
1.102     kristaps  540:                return(0);
1.203     schwarze  541:        mdoc->next = MDOC_NEXT_CHILD;
1.175     kristaps  542:        return(1);
                    543: }
1.1       kristaps  544:
1.124     kristaps  545: int
1.203     schwarze  546: mdoc_word_alloc(struct mdoc *mdoc, int line, int pos, const char *p)
1.1       kristaps  547: {
1.91      kristaps  548:        struct mdoc_node *n;
1.1       kristaps  549:
1.203     schwarze  550:        n = node_alloc(mdoc, line, pos, MDOC_MAX, MDOC_TEXT);
                    551:        n->string = roff_strdup(mdoc->roff, p);
1.91      kristaps  552:
1.203     schwarze  553:        if ( ! node_append(mdoc, n))
1.101     kristaps  554:                return(0);
1.124     kristaps  555:
1.203     schwarze  556:        mdoc->next = MDOC_NEXT_SIBLING;
1.101     kristaps  557:        return(1);
1.91      kristaps  558: }
                    559:
1.205     schwarze  560: void
                    561: mdoc_word_append(struct mdoc *mdoc, const char *p)
                    562: {
                    563:        struct mdoc_node        *n;
                    564:        char                    *addstr, *newstr;
                    565:
                    566:        n = mdoc->last;
                    567:        addstr = roff_strdup(mdoc->roff, p);
1.210     schwarze  568:        mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
1.205     schwarze  569:        free(addstr);
                    570:        free(n->string);
                    571:        n->string = newstr;
                    572:        mdoc->next = MDOC_NEXT_SIBLING;
                    573: }
1.91      kristaps  574:
1.155     kristaps  575: static void
1.53      kristaps  576: mdoc_node_free(struct mdoc_node *p)
1.1       kristaps  577: {
                    578:
1.172     kristaps  579:        if (MDOC_BLOCK == p->type || MDOC_ELEM == p->type)
1.171     kristaps  580:                free(p->norm);
1.53      kristaps  581:        if (p->string)
                    582:                free(p->string);
                    583:        if (p->args)
                    584:                mdoc_argv_free(p->args);
1.1       kristaps  585:        free(p);
                    586: }
                    587:
1.121     kristaps  588: static void
1.203     schwarze  589: mdoc_node_unlink(struct mdoc *mdoc, struct mdoc_node *n)
1.121     kristaps  590: {
                    591:
                    592:        /* Adjust siblings. */
                    593:
                    594:        if (n->prev)
                    595:                n->prev->next = n->next;
                    596:        if (n->next)
                    597:                n->next->prev = n->prev;
                    598:
                    599:        /* Adjust parent. */
                    600:
                    601:        if (n->parent) {
                    602:                n->parent->nchild--;
                    603:                if (n->parent->child == n)
                    604:                        n->parent->child = n->prev ? n->prev : n->next;
1.169     kristaps  605:                if (n->parent->last == n)
                    606:                        n->parent->last = n->prev ? n->prev : NULL;
1.121     kristaps  607:        }
                    608:
                    609:        /* Adjust parse point, if applicable. */
                    610:
1.203     schwarze  611:        if (mdoc && mdoc->last == n) {
1.121     kristaps  612:                if (n->prev) {
1.203     schwarze  613:                        mdoc->last = n->prev;
                    614:                        mdoc->next = MDOC_NEXT_SIBLING;
1.121     kristaps  615:                } else {
1.203     schwarze  616:                        mdoc->last = n->parent;
                    617:                        mdoc->next = MDOC_NEXT_CHILD;
1.121     kristaps  618:                }
                    619:        }
                    620:
1.203     schwarze  621:        if (mdoc && mdoc->first == n)
                    622:                mdoc->first = NULL;
1.121     kristaps  623: }
                    624:
1.53      kristaps  625: void
1.203     schwarze  626: mdoc_node_delete(struct mdoc *mdoc, struct mdoc_node *p)
1.1       kristaps  627: {
                    628:
1.121     kristaps  629:        while (p->child) {
                    630:                assert(p->nchild);
1.203     schwarze  631:                mdoc_node_delete(mdoc, p->child);
1.121     kristaps  632:        }
                    633:        assert(0 == p->nchild);
1.1       kristaps  634:
1.203     schwarze  635:        mdoc_node_unlink(mdoc, p);
1.53      kristaps  636:        mdoc_node_free(p);
1.201     schwarze  637: }
                    638:
                    639: int
1.203     schwarze  640: mdoc_node_relink(struct mdoc *mdoc, struct mdoc_node *p)
1.201     schwarze  641: {
                    642:
1.203     schwarze  643:        mdoc_node_unlink(mdoc, p);
                    644:        return(node_append(mdoc, p));
1.1       kristaps  645: }
                    646:
1.193     kristaps  647: #if 0
1.191     kristaps  648: /*
                    649:  * Pre-treat a text line.
                    650:  * Text lines can consist of equations, which must be handled apart from
                    651:  * the regular text.
                    652:  * Thus, use this function to step through a line checking if it has any
                    653:  * equations embedded in it.
                    654:  * This must handle multiple equations AND equations that do not end at
                    655:  * the end-of-line, i.e., will re-enter in the next roff parse.
                    656:  */
                    657: static int
1.203     schwarze  658: mdoc_preptext(struct mdoc *mdoc, int line, char *buf, int offs)
1.191     kristaps  659: {
                    660:        char            *start, *end;
                    661:        char             delim;
                    662:
                    663:        while ('\0' != buf[offs]) {
                    664:                /* Mark starting position if eqn is set. */
                    665:                start = NULL;
1.203     schwarze  666:                if ('\0' != (delim = roff_eqndelim(mdoc->roff)))
1.191     kristaps  667:                        if (NULL != (start = strchr(buf + offs, delim)))
                    668:                                *start++ = '\0';
                    669:
                    670:                /* Parse text as normal. */
1.203     schwarze  671:                if ( ! mdoc_ptext(mdoc, line, buf, offs))
1.191     kristaps  672:                        return(0);
                    673:
                    674:                /* Continue only if an equation exists. */
                    675:                if (NULL == start)
                    676:                        break;
                    677:
                    678:                /* Read past the end of the equation. */
                    679:                offs += start - (buf + offs);
                    680:                assert(start == &buf[offs]);
                    681:                if (NULL != (end = strchr(buf + offs, delim))) {
                    682:                        *end++ = '\0';
                    683:                        while (' ' == *end)
                    684:                                end++;
                    685:                }
                    686:
                    687:                /* Parse the equation itself. */
1.203     schwarze  688:                roff_openeqn(mdoc->roff, NULL, line, offs, buf);
1.191     kristaps  689:
                    690:                /* Process a finished equation? */
1.203     schwarze  691:                if (roff_closeeqn(mdoc->roff))
                    692:                        if ( ! mdoc_addeqn(mdoc, roff_eqn(mdoc->roff)))
1.191     kristaps  693:                                return(0);
                    694:                offs += (end - (buf + offs));
1.213     schwarze  695:        }
1.191     kristaps  696:
                    697:        return(1);
                    698: }
1.193     kristaps  699: #endif
1.1       kristaps  700:
1.53      kristaps  701: /*
                    702:  * Parse free-form text, that is, a line that does not begin with the
                    703:  * control character.
                    704:  */
                    705: static int
1.203     schwarze  706: mdoc_ptext(struct mdoc *mdoc, int line, char *buf, int offs)
1.1       kristaps  707: {
1.142     kristaps  708:        char             *c, *ws, *end;
                    709:        struct mdoc_node *n;
                    710:
1.203     schwarze  711:        assert(mdoc->last);
                    712:        n = mdoc->last;
1.142     kristaps  713:
                    714:        /*
1.144     kristaps  715:         * Divert directly to list processing if we're encountering a
1.142     kristaps  716:         * columnar MDOC_BLOCK with or without a prior MDOC_BLOCK entry
1.144     kristaps  717:         * (a MDOC_BODY means it's already open, in which case we should
                    718:         * process within its context in the normal way).
1.142     kristaps  719:         */
                    720:
1.143     kristaps  721:        if (MDOC_Bl == n->tok && MDOC_BODY == n->type &&
1.213     schwarze  722:            LIST_column == n->norm->Bl.type) {
1.144     kristaps  723:                /* `Bl' is open without any children. */
1.203     schwarze  724:                mdoc->flags |= MDOC_FREECOL;
                    725:                return(mdoc_macro(mdoc, MDOC_It, line, offs, &offs, buf));
1.142     kristaps  726:        }
                    727:
                    728:        if (MDOC_It == n->tok && MDOC_BLOCK == n->type &&
1.213     schwarze  729:            NULL != n->parent &&
                    730:            MDOC_Bl == n->parent->tok &&
                    731:            LIST_column == n->parent->norm->Bl.type) {
1.144     kristaps  732:                /* `Bl' has block-level `It' children. */
1.203     schwarze  733:                mdoc->flags |= MDOC_FREECOL;
                    734:                return(mdoc_macro(mdoc, MDOC_It, line, offs, &offs, buf));
1.142     kristaps  735:        }
1.124     kristaps  736:
1.137     schwarze  737:        /*
                    738:         * Search for the beginning of unescaped trailing whitespace (ws)
                    739:         * and for the first character not to be output (end).
                    740:         */
1.139     kristaps  741:
                    742:        /* FIXME: replace with strcspn(). */
1.137     schwarze  743:        ws = NULL;
                    744:        for (c = end = buf + offs; *c; c++) {
                    745:                switch (*c) {
                    746:                case ' ':
                    747:                        if (NULL == ws)
                    748:                                ws = c;
                    749:                        continue;
                    750:                case '\t':
                    751:                        /*
                    752:                         * Always warn about trailing tabs,
                    753:                         * even outside literal context,
                    754:                         * where they should be put on the next line.
                    755:                         */
                    756:                        if (NULL == ws)
                    757:                                ws = c;
                    758:                        /*
                    759:                         * Strip trailing tabs in literal context only;
                    760:                         * outside, they affect the next line.
                    761:                         */
1.203     schwarze  762:                        if (MDOC_LITERAL & mdoc->flags)
1.137     schwarze  763:                                continue;
                    764:                        break;
                    765:                case '\\':
                    766:                        /* Skip the escaped character, too, if any. */
                    767:                        if (c[1])
                    768:                                c++;
                    769:                        /* FALLTHROUGH */
                    770:                default:
                    771:                        ws = NULL;
                    772:                        break;
                    773:                }
                    774:                end = c + 1;
                    775:        }
                    776:        *end = '\0';
1.91      kristaps  777:
1.137     schwarze  778:        if (ws)
1.218     schwarze  779:                mandoc_msg(MANDOCERR_SPACE_EOL, mdoc->parse,
                    780:                    line, (int)(ws-buf), NULL);
1.115     kristaps  781:
1.203     schwarze  782:        if ('\0' == buf[offs] && ! (MDOC_LITERAL & mdoc->flags)) {
1.218     schwarze  783:                mandoc_msg(MANDOCERR_FI_BLANK, mdoc->parse,
                    784:                    line, (int)(c - buf), NULL);
1.124     kristaps  785:
1.119     kristaps  786:                /*
1.165     schwarze  787:                 * Insert a `sp' in the case of a blank line.  Technically,
1.124     kristaps  788:                 * blank lines aren't allowed, but enough manuals assume this
                    789:                 * behaviour that we want to work around it.
1.119     kristaps  790:                 */
1.203     schwarze  791:                if ( ! mdoc_elem_alloc(mdoc, line, offs, MDOC_sp, NULL))
1.119     kristaps  792:                        return(0);
1.124     kristaps  793:
1.203     schwarze  794:                mdoc->next = MDOC_NEXT_SIBLING;
1.199     schwarze  795:
1.203     schwarze  796:                return(mdoc_valid_post(mdoc));
1.119     kristaps  797:        }
1.68      kristaps  798:
1.203     schwarze  799:        if ( ! mdoc_word_alloc(mdoc, line, offs, buf+offs))
1.137     schwarze  800:                return(0);
1.91      kristaps  801:
1.203     schwarze  802:        if (MDOC_LITERAL & mdoc->flags)
1.137     schwarze  803:                return(1);
1.128     kristaps  804:
                    805:        /*
                    806:         * End-of-sentence check.  If the last character is an unescaped
                    807:         * EOS character, then flag the node as being the end of a
                    808:         * sentence.  The front-end will know how to interpret this.
                    809:         */
1.132     kristaps  810:
1.137     schwarze  811:        assert(buf < end);
                    812:
1.207     schwarze  813:        if (mandoc_eos(buf+offs, (size_t)(end-buf-offs)))
1.203     schwarze  814:                mdoc->last->flags |= MDOC_EOS;
1.128     kristaps  815:
                    816:        return(1);
1.1       kristaps  817: }
                    818:
1.53      kristaps  819: /*
                    820:  * Parse a macro line, that is, a line beginning with the control
                    821:  * character.
                    822:  */
1.155     kristaps  823: static int
1.203     schwarze  824: mdoc_pmacro(struct mdoc *mdoc, int ln, char *buf, int offs)
1.1       kristaps  825: {
1.144     kristaps  826:        enum mdoct        tok;
1.188     kristaps  827:        int               i, sv;
1.144     kristaps  828:        char              mac[5];
                    829:        struct mdoc_node *n;
1.1       kristaps  830:
1.188     kristaps  831:        /* Empty post-control lines are ignored. */
1.63      kristaps  832:
1.188     kristaps  833:        if ('"' == buf[offs]) {
1.218     schwarze  834:                mandoc_msg(MANDOCERR_COMMENT_BAD, mdoc->parse,
                    835:                    ln, offs, NULL);
1.188     kristaps  836:                return(1);
                    837:        } else if ('\0' == buf[offs])
1.63      kristaps  838:                return(1);
                    839:
1.188     kristaps  840:        sv = offs;
1.130     kristaps  841:
1.213     schwarze  842:        /*
1.162     schwarze  843:         * Copy the first word into a nil-terminated buffer.
1.165     schwarze  844:         * Stop copying when a tab, space, or eoln is encountered.
1.160     kristaps  845:         */
1.1       kristaps  846:
1.188     kristaps  847:        i = 0;
1.213     schwarze  848:        while (i < 4 && '\0' != buf[offs] && ' ' != buf[offs] &&
                    849:            '\t' != buf[offs])
1.188     kristaps  850:                mac[i++] = buf[offs++];
                    851:
                    852:        mac[i] = '\0';
                    853:
1.214     schwarze  854:        tok = (i > 1 && i < 4) ? mdoc_hash_find(mac) : MDOC_MAX;
1.1       kristaps  855:
1.163     schwarze  856:        if (MDOC_MAX == tok) {
1.213     schwarze  857:                mandoc_vmsg(MANDOCERR_MACRO, mdoc->parse,
                    858:                    ln, sv, "%s", buf + sv - 1);
1.58      kristaps  859:                return(1);
1.53      kristaps  860:        }
1.1       kristaps  861:
1.160     kristaps  862:        /* Disregard the first trailing tab, if applicable. */
                    863:
1.188     kristaps  864:        if ('\t' == buf[offs])
                    865:                offs++;
1.160     kristaps  866:
                    867:        /* Jump to the next non-whitespace word. */
1.1       kristaps  868:
1.188     kristaps  869:        while (buf[offs] && ' ' == buf[offs])
                    870:                offs++;
1.1       kristaps  871:
1.213     schwarze  872:        /*
1.125     kristaps  873:         * Trailing whitespace.  Note that tabs are allowed to be passed
                    874:         * into the parser as "text", so we only warn about spaces here.
                    875:         */
1.115     kristaps  876:
1.188     kristaps  877:        if ('\0' == buf[offs] && ' ' == buf[offs - 1])
1.218     schwarze  878:                mandoc_msg(MANDOCERR_SPACE_EOL, mdoc->parse,
                    879:                    ln, offs - 1, NULL);
1.115     kristaps  880:
1.144     kristaps  881:        /*
                    882:         * If an initial macro or a list invocation, divert directly
                    883:         * into macro processing.
                    884:         */
                    885:
1.203     schwarze  886:        if (NULL == mdoc->last || MDOC_It == tok || MDOC_El == tok) {
1.213     schwarze  887:                if ( ! mdoc_macro(mdoc, tok, ln, sv, &offs, buf))
1.144     kristaps  888:                        goto err;
                    889:                return(1);
                    890:        }
                    891:
1.203     schwarze  892:        n = mdoc->last;
                    893:        assert(mdoc->last);
1.144     kristaps  894:
                    895:        /*
                    896:         * If the first macro of a `Bl -column', open an `It' block
                    897:         * context around the parsed macro.
                    898:         */
                    899:
                    900:        if (MDOC_Bl == n->tok && MDOC_BODY == n->type &&
1.213     schwarze  901:            LIST_column == n->norm->Bl.type) {
1.203     schwarze  902:                mdoc->flags |= MDOC_FREECOL;
                    903:                if ( ! mdoc_macro(mdoc, MDOC_It, ln, sv, &sv, buf))
1.144     kristaps  904:                        goto err;
                    905:                return(1);
                    906:        }
                    907:
                    908:        /*
                    909:         * If we're following a block-level `It' within a `Bl -column'
                    910:         * context (perhaps opened in the above block or in ptext()),
                    911:         * then open an `It' block context around the parsed macro.
1.98      kristaps  912:         */
1.144     kristaps  913:
                    914:        if (MDOC_It == n->tok && MDOC_BLOCK == n->type &&
1.213     schwarze  915:            NULL != n->parent &&
                    916:            MDOC_Bl == n->parent->tok &&
                    917:            LIST_column == n->parent->norm->Bl.type) {
1.203     schwarze  918:                mdoc->flags |= MDOC_FREECOL;
1.213     schwarze  919:                if ( ! mdoc_macro(mdoc, MDOC_It, ln, sv, &sv, buf))
1.144     kristaps  920:                        goto err;
                    921:                return(1);
                    922:        }
                    923:
                    924:        /* Normal processing of a macro. */
                    925:
1.213     schwarze  926:        if ( ! mdoc_macro(mdoc, tok, ln, sv, &offs, buf))
1.53      kristaps  927:                goto err;
1.208     schwarze  928:
                    929:        /* In quick mode (for mandocdb), abort after the NAME section. */
                    930:
                    931:        if (mdoc->quick && MDOC_Sh == tok &&
                    932:            SEC_NAME != mdoc->last->sec)
                    933:                return(2);
1.1       kristaps  934:
1.53      kristaps  935:        return(1);
1.1       kristaps  936:
1.53      kristaps  937: err:   /* Error out. */
1.1       kristaps  938:
1.203     schwarze  939:        mdoc->flags |= MDOC_HALT;
1.53      kristaps  940:        return(0);
1.1       kristaps  941: }
1.100     kristaps  942:
1.186     kristaps  943: enum mdelim
                    944: mdoc_isdelim(const char *p)
                    945: {
                    946:
                    947:        if ('\0' == p[0])
                    948:                return(DELIM_NONE);
                    949:
                    950:        if ('\0' == p[1])
                    951:                switch (p[0]) {
1.213     schwarze  952:                case '(':
1.186     kristaps  953:                        /* FALLTHROUGH */
1.213     schwarze  954:                case '[':
1.186     kristaps  955:                        return(DELIM_OPEN);
1.213     schwarze  956:                case '|':
1.186     kristaps  957:                        return(DELIM_MIDDLE);
1.213     schwarze  958:                case '.':
1.186     kristaps  959:                        /* FALLTHROUGH */
1.213     schwarze  960:                case ',':
1.186     kristaps  961:                        /* FALLTHROUGH */
1.213     schwarze  962:                case ';':
1.186     kristaps  963:                        /* FALLTHROUGH */
1.213     schwarze  964:                case ':':
1.186     kristaps  965:                        /* FALLTHROUGH */
1.213     schwarze  966:                case '?':
1.186     kristaps  967:                        /* FALLTHROUGH */
1.213     schwarze  968:                case '!':
1.186     kristaps  969:                        /* FALLTHROUGH */
1.213     schwarze  970:                case ')':
1.186     kristaps  971:                        /* FALLTHROUGH */
1.213     schwarze  972:                case ']':
1.186     kristaps  973:                        return(DELIM_CLOSE);
                    974:                default:
                    975:                        return(DELIM_NONE);
                    976:                }
                    977:
                    978:        if ('\\' != p[0])
                    979:                return(DELIM_NONE);
1.100     kristaps  980:
1.186     kristaps  981:        if (0 == strcmp(p + 1, "."))
                    982:                return(DELIM_CLOSE);
1.200     schwarze  983:        if (0 == strcmp(p + 1, "fR|\\fP"))
1.186     kristaps  984:                return(DELIM_MIDDLE);
                    985:
                    986:        return(DELIM_NONE);
1.211     schwarze  987: }
                    988:
                    989: void
                    990: mdoc_deroff(char **dest, const struct mdoc_node *n)
                    991: {
                    992:        char    *cp;
                    993:        size_t   sz;
                    994:
                    995:        if (MDOC_TEXT != n->type) {
                    996:                for (n = n->child; n; n = n->next)
                    997:                        mdoc_deroff(dest, n);
                    998:                return;
                    999:        }
                   1000:
                   1001:        /* Skip leading whitespace. */
                   1002:
                   1003:        for (cp = n->string; '\0' != *cp; cp++)
                   1004:                if (0 == isspace((unsigned char)*cp))
                   1005:                        break;
                   1006:
                   1007:        /* Skip trailing whitespace. */
                   1008:
                   1009:        for (sz = strlen(cp); sz; sz--)
                   1010:                if (0 == isspace((unsigned char)cp[sz-1]))
                   1011:                        break;
                   1012:
                   1013:        /* Skip empty strings. */
                   1014:
                   1015:        if (0 == sz)
                   1016:                return;
                   1017:
                   1018:        if (NULL == *dest) {
                   1019:                *dest = mandoc_strndup(cp, sz);
                   1020:                return;
                   1021:        }
                   1022:
                   1023:        mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
                   1024:        free(*dest);
                   1025:        *dest = cp;
1.186     kristaps 1026: }

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