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Annotation of mandoc/html.c, Revision 1.275

1.275   ! schwarze    1: /* $Id: html.c,v 1.274 2021/08/10 12:55:03 schwarze Exp $ */
1.1       kristaps    2: /*
1.176     schwarze    3:  * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.274     schwarze    4:  * Copyright (c) 2011-2015, 2017-2021 Ingo Schwarze <schwarze@openbsd.org>
1.1       kristaps    5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
1.29      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:  *
1.186     schwarze   10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.29      kristaps   11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.186     schwarze   12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.29      kristaps   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.
1.264     schwarze   17:  *
                     18:  * Common functions for mandoc(1) HTML formatters.
                     19:  * For use by individual formatters and by the main program.
1.1       kristaps   20:  */
1.92      kristaps   21: #include "config.h"
                     22:
1.41      kristaps   23: #include <sys/types.h>
1.240     schwarze   24: #include <sys/stat.h>
1.30      kristaps   25:
1.1       kristaps   26: #include <assert.h>
1.68      kristaps   27: #include <ctype.h>
1.76      kristaps   28: #include <stdarg.h>
1.229     schwarze   29: #include <stddef.h>
1.29      kristaps   30: #include <stdio.h>
1.63      kristaps   31: #include <stdint.h>
1.1       kristaps   32: #include <stdlib.h>
1.33      kristaps   33: #include <string.h>
1.45      kristaps   34: #include <unistd.h>
1.1       kristaps   35:
1.210     schwarze   36: #include "mandoc_aux.h"
1.229     schwarze   37: #include "mandoc_ohash.h"
1.100     kristaps   38: #include "mandoc.h"
1.210     schwarze   39: #include "roff.h"
1.58      kristaps   40: #include "out.h"
1.51      kristaps   41: #include "html.h"
1.186     schwarze   42: #include "manconf.h"
1.64      kristaps   43: #include "main.h"
1.63      kristaps   44:
1.29      kristaps   45: struct htmldata {
1.63      kristaps   46:        const char       *name;
1.29      kristaps   47:        int               flags;
1.257     schwarze   48: #define        HTML_INPHRASE    (1 << 0)  /* Can appear in phrasing context. */
                     49: #define        HTML_TOPHRASE    (1 << 1)  /* Establishes phrasing context. */
                     50: #define        HTML_NOSTACK     (1 << 2)  /* Does not have an end tag. */
                     51: #define        HTML_NLBEFORE    (1 << 3)  /* Output line break before opening. */
                     52: #define        HTML_NLBEGIN     (1 << 4)  /* Output line break after opening. */
                     53: #define        HTML_NLEND       (1 << 5)  /* Output line break before closing. */
                     54: #define        HTML_NLAFTER     (1 << 6)  /* Output line break after closing. */
1.196     schwarze   55: #define        HTML_NLAROUND    (HTML_NLBEFORE | HTML_NLAFTER)
                     56: #define        HTML_NLINSIDE    (HTML_NLBEGIN | HTML_NLEND)
                     57: #define        HTML_NLALL       (HTML_NLAROUND | HTML_NLINSIDE)
1.257     schwarze   58: #define        HTML_INDENT      (1 << 7)  /* Indent content by two spaces. */
                     59: #define        HTML_NOINDENT    (1 << 8)  /* Exception: never indent content. */
1.29      kristaps   60: };
1.7       kristaps   61:
1.29      kristaps   62: static const struct htmldata htmltags[TAG_MAX] = {
1.196     schwarze   63:        {"html",        HTML_NLALL},
                     64:        {"head",        HTML_NLALL | HTML_INDENT},
1.257     schwarze   65:        {"meta",        HTML_NOSTACK | HTML_NLALL},
                     66:        {"link",        HTML_NOSTACK | HTML_NLALL},
                     67:        {"style",       HTML_NLALL | HTML_INDENT},
                     68:        {"title",       HTML_NLAROUND},
1.196     schwarze   69:        {"body",        HTML_NLALL},
                     70:        {"div",         HTML_NLAROUND},
1.253     schwarze   71:        {"section",     HTML_NLALL},
1.196     schwarze   72:        {"table",       HTML_NLALL | HTML_INDENT},
                     73:        {"tr",          HTML_NLALL | HTML_INDENT},
                     74:        {"td",          HTML_NLAROUND},
                     75:        {"li",          HTML_NLAROUND | HTML_INDENT},
                     76:        {"ul",          HTML_NLALL | HTML_INDENT},
                     77:        {"ol",          HTML_NLALL | HTML_INDENT},
                     78:        {"dl",          HTML_NLALL | HTML_INDENT},
                     79:        {"dt",          HTML_NLAROUND},
                     80:        {"dd",          HTML_NLAROUND | HTML_INDENT},
1.257     schwarze   81:        {"h1",          HTML_TOPHRASE | HTML_NLAROUND},
                     82:        {"h2",          HTML_TOPHRASE | HTML_NLAROUND},
                     83:        {"p",           HTML_TOPHRASE | HTML_NLAROUND | HTML_INDENT},
1.271     schwarze   84:        {"pre",         HTML_TOPHRASE | HTML_NLAROUND | HTML_NOINDENT},
1.257     schwarze   85:        {"a",           HTML_INPHRASE | HTML_TOPHRASE},
                     86:        {"b",           HTML_INPHRASE | HTML_TOPHRASE},
                     87:        {"cite",        HTML_INPHRASE | HTML_TOPHRASE},
                     88:        {"code",        HTML_INPHRASE | HTML_TOPHRASE},
                     89:        {"i",           HTML_INPHRASE | HTML_TOPHRASE},
                     90:        {"small",       HTML_INPHRASE | HTML_TOPHRASE},
                     91:        {"span",        HTML_INPHRASE | HTML_TOPHRASE},
                     92:        {"var",         HTML_INPHRASE | HTML_TOPHRASE},
                     93:        {"br",          HTML_INPHRASE | HTML_NOSTACK | HTML_NLALL},
1.275   ! schwarze   94:        {"hr",          HTML_INPHRASE | HTML_NOSTACK},
1.263     schwarze   95:        {"mark",        HTML_INPHRASE },
1.257     schwarze   96:        {"math",        HTML_INPHRASE | HTML_NLALL | HTML_INDENT},
1.196     schwarze   97:        {"mrow",        0},
                     98:        {"mi",          0},
1.215     schwarze   99:        {"mn",          0},
1.196     schwarze  100:        {"mo",          0},
                    101:        {"msup",        0},
                    102:        {"msub",        0},
                    103:        {"msubsup",     0},
                    104:        {"mfrac",       0},
                    105:        {"msqrt",       0},
                    106:        {"mfenced",     0},
                    107:        {"mtable",      0},
                    108:        {"mtr",         0},
                    109:        {"mtd",         0},
                    110:        {"munderover",  0},
                    111:        {"munder",      0},
                    112:        {"mover",       0},
1.90      kristaps  113: };
                    114:
1.229     schwarze  115: /* Avoid duplicate HTML id= attributes. */
1.269     schwarze  116:
                    117: struct id_entry {
                    118:        int      ord;   /* Ordinal number of the latest occurrence. */
                    119:        char     id[];  /* The id= attribute without any ordinal suffix. */
                    120: };
1.229     schwarze  121: static struct ohash     id_unique;
                    122:
1.254     schwarze  123: static void     html_reset_internal(struct html *);
1.197     schwarze  124: static void     print_byte(struct html *, char);
                    125: static void     print_endword(struct html *);
                    126: static void     print_indent(struct html *);
                    127: static void     print_word(struct html *, const char *);
                    128:
1.184     schwarze  129: static void     print_ctag(struct html *, struct tag *);
1.197     schwarze  130: static int      print_escape(struct html *, char);
1.195     schwarze  131: static int      print_encode(struct html *, const char *, const char *, int);
                    132: static void     print_href(struct html *, const char *, const char *, int);
1.255     schwarze  133: static void     print_metaf(struct html *);
1.82      kristaps  134:
1.156     schwarze  135:
1.180     schwarze  136: void *
1.191     schwarze  137: html_alloc(const struct manoutput *outopts)
1.10      kristaps  138: {
1.30      kristaps  139:        struct html     *h;
                    140:
1.128     kristaps  141:        h = mandoc_calloc(1, sizeof(struct html));
1.10      kristaps  142:
1.204     schwarze  143:        h->tag = NULL;
1.272     schwarze  144:        h->metac = h->metal = ESCAPE_FONTROMAN;
1.186     schwarze  145:        h->style = outopts->style;
1.240     schwarze  146:        if ((h->base_man1 = outopts->man) == NULL)
                    147:                h->base_man2 = NULL;
                    148:        else if ((h->base_man2 = strchr(h->base_man1, ';')) != NULL)
                    149:                *h->base_man2++ = '\0';
1.186     schwarze  150:        h->base_includes = outopts->includes;
                    151:        if (outopts->fragment)
                    152:                h->oflags |= HTML_FRAGMENT;
1.241     schwarze  153:        if (outopts->toc)
                    154:                h->oflags |= HTML_TOC;
1.43      kristaps  155:
1.269     schwarze  156:        mandoc_ohash_init(&id_unique, 4, offsetof(struct id_entry, id));
1.229     schwarze  157:
1.188     schwarze  158:        return h;
1.29      kristaps  159: }
1.10      kristaps  160:
1.254     schwarze  161: static void
                    162: html_reset_internal(struct html *h)
1.29      kristaps  163: {
1.30      kristaps  164:        struct tag      *tag;
1.269     schwarze  165:        struct id_entry *entry;
1.229     schwarze  166:        unsigned int     slot;
1.30      kristaps  167:
1.204     schwarze  168:        while ((tag = h->tag) != NULL) {
                    169:                h->tag = tag->next;
1.30      kristaps  170:                free(tag);
                    171:        }
1.269     schwarze  172:        entry = ohash_first(&id_unique, &slot);
                    173:        while (entry != NULL) {
                    174:                free(entry);
                    175:                entry = ohash_next(&id_unique, &slot);
1.229     schwarze  176:        }
                    177:        ohash_delete(&id_unique);
1.254     schwarze  178: }
                    179:
                    180: void
                    181: html_reset(void *p)
                    182: {
                    183:        html_reset_internal(p);
1.269     schwarze  184:        mandoc_ohash_init(&id_unique, 4, offsetof(struct id_entry, id));
1.254     schwarze  185: }
                    186:
                    187: void
                    188: html_free(void *p)
                    189: {
                    190:        html_reset_internal(p);
                    191:        free(p);
1.10      kristaps  192: }
1.2       kristaps  193:
1.51      kristaps  194: void
1.29      kristaps  195: print_gen_head(struct html *h)
                    196: {
1.165     kristaps  197:        struct tag      *t;
1.41      kristaps  198:
1.194     schwarze  199:        print_otag(h, TAG_META, "?", "charset", "utf-8");
1.273     schwarze  200:        print_otag(h, TAG_META, "??", "name", "viewport",
                    201:            "content", "width=device-width, initial-scale=1.0");
1.222     schwarze  202:        if (h->style != NULL) {
                    203:                print_otag(h, TAG_LINK, "?h??", "rel", "stylesheet",
                    204:                    h->style, "type", "text/css", "media", "all");
                    205:                return;
                    206:        }
1.165     kristaps  207:
1.168     kristaps  208:        /*
1.222     schwarze  209:         * Print a minimal embedded style sheet.
1.168     kristaps  210:         */
1.196     schwarze  211:
1.194     schwarze  212:        t = print_otag(h, TAG_STYLE, "");
1.196     schwarze  213:        print_text(h, "table.head, table.foot { width: 100%; }");
1.197     schwarze  214:        print_endline(h);
1.196     schwarze  215:        print_text(h, "td.head-rtitle, td.foot-os { text-align: right; }");
1.197     schwarze  216:        print_endline(h);
1.196     schwarze  217:        print_text(h, "td.head-vol { text-align: center; }");
1.197     schwarze  218:        print_endline(h);
1.256     schwarze  219:        print_text(h, ".Nd, .Bf, .Op { display: inline; }");
1.225     schwarze  220:        print_endline(h);
1.256     schwarze  221:        print_text(h, ".Pa, .Ad { font-style: italic; }");
1.226     schwarze  222:        print_endline(h);
1.256     schwarze  223:        print_text(h, ".Ms { font-weight: bold; }");
1.228     schwarze  224:        print_endline(h);
1.256     schwarze  225:        print_text(h, ".Bl-diag ");
1.224     schwarze  226:        print_byte(h, '>');
                    227:        print_text(h, " dt { font-weight: bold; }");
1.223     schwarze  228:        print_endline(h);
1.256     schwarze  229:        print_text(h, "code.Nm, .Fl, .Cm, .Ic, code.In, .Fd, .Fn, .Cd "
                    230:            "{ font-weight: bold; font-family: inherit; }");
1.165     kristaps  231:        print_tagq(h, t);
1.4       kristaps  232: }
                    233:
1.255     schwarze  234: int
                    235: html_setfont(struct html *h, enum mandoc_esc font)
1.88      kristaps  236: {
1.255     schwarze  237:        switch (font) {
1.156     schwarze  238:        case ESCAPE_FONTPREV:
1.90      kristaps  239:                font = h->metal;
1.88      kristaps  240:                break;
1.156     schwarze  241:        case ESCAPE_FONTITALIC:
                    242:        case ESCAPE_FONTBOLD:
                    243:        case ESCAPE_FONTBI:
1.255     schwarze  244:        case ESCAPE_FONTROMAN:
1.274     schwarze  245:        case ESCAPE_FONTCR:
                    246:        case ESCAPE_FONTCB:
                    247:        case ESCAPE_FONTCI:
1.242     schwarze  248:                break;
1.156     schwarze  249:        case ESCAPE_FONT:
1.255     schwarze  250:                font = ESCAPE_FONTROMAN;
1.88      kristaps  251:                break;
                    252:        default:
1.255     schwarze  253:                return 0;
1.88      kristaps  254:        }
1.255     schwarze  255:        h->metal = h->metac;
                    256:        h->metac = font;
                    257:        return 1;
                    258: }
1.88      kristaps  259:
1.255     schwarze  260: static void
                    261: print_metaf(struct html *h)
                    262: {
1.122     kristaps  263:        if (h->metaf) {
                    264:                print_tagq(h, h->metaf);
                    265:                h->metaf = NULL;
                    266:        }
1.255     schwarze  267:        switch (h->metac) {
                    268:        case ESCAPE_FONTITALIC:
1.194     schwarze  269:                h->metaf = print_otag(h, TAG_I, "");
1.152     schwarze  270:                break;
1.255     schwarze  271:        case ESCAPE_FONTBOLD:
1.194     schwarze  272:                h->metaf = print_otag(h, TAG_B, "");
1.152     schwarze  273:                break;
1.255     schwarze  274:        case ESCAPE_FONTBI:
1.194     schwarze  275:                h->metaf = print_otag(h, TAG_B, "");
                    276:                print_otag(h, TAG_I, "");
1.152     schwarze  277:                break;
1.274     schwarze  278:        case ESCAPE_FONTCR:
1.242     schwarze  279:                h->metaf = print_otag(h, TAG_SPAN, "c", "Li");
                    280:                break;
1.274     schwarze  281:        case ESCAPE_FONTCB:
                    282:                h->metaf = print_otag(h, TAG_SPAN, "c", "Li");
                    283:                print_otag(h, TAG_B, "");
                    284:                break;
                    285:        case ESCAPE_FONTCI:
                    286:                h->metaf = print_otag(h, TAG_SPAN, "c", "Li");
                    287:                print_otag(h, TAG_I, "");
                    288:                break;
1.152     schwarze  289:        default:
                    290:                break;
                    291:        }
1.248     schwarze  292: }
                    293:
1.249     schwarze  294: void
                    295: html_close_paragraph(struct html *h)
                    296: {
1.259     schwarze  297:        struct tag      *this, *next;
                    298:        int              flags;
1.249     schwarze  299:
1.259     schwarze  300:        this = h->tag;
                    301:        for (;;) {
                    302:                next = this->next;
                    303:                flags = htmltags[this->tag].flags;
                    304:                if (flags & (HTML_INPHRASE | HTML_TOPHRASE))
                    305:                        print_ctag(h, this);
                    306:                if ((flags & HTML_INPHRASE) == 0)
1.249     schwarze  307:                        break;
1.259     schwarze  308:                this = next;
1.249     schwarze  309:        }
                    310: }
                    311:
1.248     schwarze  312: /*
                    313:  * ROFF_nf switches to no-fill mode, ROFF_fi to fill mode.
                    314:  * TOKEN_NONE does not switch.  The old mode is returned.
                    315:  */
                    316: enum roff_tok
                    317: html_fillmode(struct html *h, enum roff_tok want)
                    318: {
                    319:        struct tag      *t;
                    320:        enum roff_tok    had;
                    321:
                    322:        for (t = h->tag; t != NULL; t = t->next)
                    323:                if (t->tag == TAG_PRE)
                    324:                        break;
                    325:
                    326:        had = t == NULL ? ROFF_fi : ROFF_nf;
                    327:
                    328:        if (want != had) {
                    329:                switch (want) {
                    330:                case ROFF_fi:
                    331:                        print_tagq(h, t);
                    332:                        break;
                    333:                case ROFF_nf:
1.249     schwarze  334:                        html_close_paragraph(h);
1.248     schwarze  335:                        print_otag(h, TAG_PRE, "");
                    336:                        break;
                    337:                case TOKEN_NONE:
                    338:                        break;
                    339:                default:
                    340:                        abort();
                    341:                }
                    342:        }
                    343:        return had;
1.210     schwarze  344: }
                    345:
1.264     schwarze  346: /*
                    347:  * Allocate a string to be used for the "id=" attribute of an HTML
                    348:  * element and/or as a segment identifier for a URI in an <a> element.
                    349:  * The function may fail and return NULL if the node lacks text data
                    350:  * to create the attribute from.
1.269     schwarze  351:  * The caller is responsible for free(3)ing the returned string.
                    352:  *
1.264     schwarze  353:  * If the "unique" argument is non-zero, the "id_unique" ohash table
1.269     schwarze  354:  * is used for de-duplication.  If the "unique" argument is 1,
                    355:  * it is the first time the function is called for this tag and
                    356:  * location, so if an ordinal suffix is needed, it is incremented.
                    357:  * If the "unique" argument is 2, it is the second time the function
                    358:  * is called for this tag and location, so the ordinal suffix
                    359:  * remains unchanged.
1.264     schwarze  360:  */
1.210     schwarze  361: char *
1.229     schwarze  362: html_make_id(const struct roff_node *n, int unique)
1.210     schwarze  363: {
                    364:        const struct roff_node  *nch;
1.269     schwarze  365:        struct id_entry         *entry;
                    366:        char                    *buf, *cp;
                    367:        size_t                   len;
1.229     schwarze  368:        unsigned int             slot;
1.210     schwarze  369:
1.267     schwarze  370:        if (n->tag != NULL)
                    371:                buf = mandoc_strdup(n->tag);
1.264     schwarze  372:        else {
                    373:                switch (n->tok) {
                    374:                case MDOC_Sh:
                    375:                case MDOC_Ss:
                    376:                case MDOC_Sx:
                    377:                case MAN_SH:
                    378:                case MAN_SS:
                    379:                        for (nch = n->child; nch != NULL; nch = nch->next)
                    380:                                if (nch->type != ROFFT_TEXT)
                    381:                                        return NULL;
                    382:                        buf = NULL;
                    383:                        deroff(&buf, n);
                    384:                        if (buf == NULL)
                    385:                                return NULL;
                    386:                        break;
                    387:                default:
1.265     schwarze  388:                        if (n->child == NULL || n->child->type != ROFFT_TEXT)
1.264     schwarze  389:                                return NULL;
                    390:                        buf = mandoc_strdup(n->child->string);
                    391:                        break;
                    392:                }
                    393:        }
1.210     schwarze  394:
1.230     schwarze  395:        /*
                    396:         * In ID attributes, only use ASCII characters that are
                    397:         * permitted in URL-fragment strings according to the
                    398:         * explicit list at:
                    399:         * https://url.spec.whatwg.org/#url-fragment-string
1.270     schwarze  400:         * In addition, reserve '~' for ordinal suffixes.
1.230     schwarze  401:         */
1.210     schwarze  402:
                    403:        for (cp = buf; *cp != '\0'; cp++)
1.230     schwarze  404:                if (isalnum((unsigned char)*cp) == 0 &&
1.270     schwarze  405:                    strchr("!$&'()*+,-./:;=?@_", *cp) == NULL)
1.210     schwarze  406:                        *cp = '_';
                    407:
1.229     schwarze  408:        if (unique == 0)
                    409:                return buf;
                    410:
                    411:        /* Avoid duplicate HTML id= attributes. */
                    412:
                    413:        slot = ohash_qlookup(&id_unique, buf);
1.269     schwarze  414:        if ((entry = ohash_find(&id_unique, slot)) == NULL) {
                    415:                len = strlen(buf) + 1;
                    416:                entry = mandoc_malloc(sizeof(*entry) + len);
                    417:                entry->ord = 1;
                    418:                memcpy(entry->id, buf, len);
                    419:                ohash_insert(&id_unique, slot, entry);
                    420:        } else if (unique == 1)
                    421:                entry->ord++;
                    422:
                    423:        if (entry->ord > 1) {
                    424:                cp = buf;
1.270     schwarze  425:                mandoc_asprintf(&buf, "%s~%d", cp, entry->ord);
1.269     schwarze  426:                free(cp);
1.229     schwarze  427:        }
1.210     schwarze  428:        return buf;
1.88      kristaps  429: }
                    430:
1.85      kristaps  431: static int
1.197     schwarze  432: print_escape(struct html *h, char c)
1.159     schwarze  433: {
                    434:
                    435:        switch (c) {
                    436:        case '<':
1.197     schwarze  437:                print_word(h, "&lt;");
1.159     schwarze  438:                break;
                    439:        case '>':
1.197     schwarze  440:                print_word(h, "&gt;");
1.159     schwarze  441:                break;
                    442:        case '&':
1.197     schwarze  443:                print_word(h, "&amp;");
1.159     schwarze  444:                break;
                    445:        case '"':
1.197     schwarze  446:                print_word(h, "&quot;");
1.159     schwarze  447:                break;
                    448:        case ASCII_NBRSP:
1.197     schwarze  449:                print_word(h, "&nbsp;");
1.159     schwarze  450:                break;
                    451:        case ASCII_HYPH:
1.197     schwarze  452:                print_byte(h, '-');
1.189     schwarze  453:                break;
1.159     schwarze  454:        case ASCII_BREAK:
                    455:                break;
                    456:        default:
1.188     schwarze  457:                return 0;
1.159     schwarze  458:        }
1.188     schwarze  459:        return 1;
1.159     schwarze  460: }
                    461:
                    462: static int
1.195     schwarze  463: print_encode(struct html *h, const char *p, const char *pend, int norecurse)
1.29      kristaps  464: {
1.197     schwarze  465:        char             numbuf[16];
1.214     schwarze  466:        const char      *seq;
1.77      kristaps  467:        size_t           sz;
1.214     schwarze  468:        int              c, len, breakline, nospace;
1.132     kristaps  469:        enum mandoc_esc  esc;
1.214     schwarze  470:        static const char rejs[10] = { ' ', '\\', '<', '>', '&', '"',
1.154     schwarze  471:                ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' };
1.14      kristaps  472:
1.195     schwarze  473:        if (pend == NULL)
                    474:                pend = strchr(p, '\0');
                    475:
1.214     schwarze  476:        breakline = 0;
1.85      kristaps  477:        nospace = 0;
                    478:
1.195     schwarze  479:        while (p < pend) {
1.151     schwarze  480:                if (HTML_SKIPCHAR & h->flags && '\\' != *p) {
                    481:                        h->flags &= ~HTML_SKIPCHAR;
                    482:                        p++;
                    483:                        continue;
                    484:                }
                    485:
1.197     schwarze  486:                for (sz = strcspn(p, rejs); sz-- && p < pend; p++)
1.214     schwarze  487:                        print_byte(h, *p);
                    488:
                    489:                if (breakline &&
                    490:                    (p >= pend || *p == ' ' || *p == ASCII_NBRSP)) {
1.245     schwarze  491:                        print_otag(h, TAG_BR, "");
1.214     schwarze  492:                        breakline = 0;
                    493:                        while (p < pend && (*p == ' ' || *p == ASCII_NBRSP))
                    494:                                p++;
                    495:                        continue;
                    496:                }
1.77      kristaps  497:
1.195     schwarze  498:                if (p >= pend)
1.132     kristaps  499:                        break;
                    500:
1.214     schwarze  501:                if (*p == ' ') {
                    502:                        print_endword(h);
                    503:                        p++;
                    504:                        continue;
                    505:                }
                    506:
1.197     schwarze  507:                if (print_escape(h, *p++))
1.154     schwarze  508:                        continue;
1.77      kristaps  509:
1.132     kristaps  510:                esc = mandoc_escape(&p, &seq, &len);
                    511:                switch (esc) {
1.156     schwarze  512:                case ESCAPE_FONT:
                    513:                case ESCAPE_FONTPREV:
                    514:                case ESCAPE_FONTBOLD:
                    515:                case ESCAPE_FONTITALIC:
                    516:                case ESCAPE_FONTBI:
                    517:                case ESCAPE_FONTROMAN:
1.274     schwarze  518:                case ESCAPE_FONTCR:
                    519:                case ESCAPE_FONTCB:
                    520:                case ESCAPE_FONTCI:
1.243     schwarze  521:                        if (0 == norecurse) {
                    522:                                h->flags |= HTML_NOSPACE;
1.255     schwarze  523:                                if (html_setfont(h, esc))
                    524:                                        print_metaf(h);
1.243     schwarze  525:                                h->flags &= ~HTML_NOSPACE;
                    526:                        }
1.151     schwarze  527:                        continue;
1.156     schwarze  528:                case ESCAPE_SKIPCHAR:
1.151     schwarze  529:                        h->flags |= HTML_SKIPCHAR;
                    530:                        continue;
1.246     schwarze  531:                case ESCAPE_ERROR:
                    532:                        continue;
1.151     schwarze  533:                default:
                    534:                        break;
                    535:                }
                    536:
                    537:                if (h->flags & HTML_SKIPCHAR) {
                    538:                        h->flags &= ~HTML_SKIPCHAR;
                    539:                        continue;
                    540:                }
                    541:
                    542:                switch (esc) {
1.156     schwarze  543:                case ESCAPE_UNICODE:
1.159     schwarze  544:                        /* Skip past "u" header. */
1.144     kristaps  545:                        c = mchars_num2uc(seq + 1, len - 1);
                    546:                        break;
1.156     schwarze  547:                case ESCAPE_NUMBERED:
1.141     kristaps  548:                        c = mchars_num2char(seq, len);
1.181     schwarze  549:                        if (c < 0)
                    550:                                continue;
1.82      kristaps  551:                        break;
1.156     schwarze  552:                case ESCAPE_SPECIAL:
1.191     schwarze  553:                        c = mchars_spec2cp(seq, len);
1.181     schwarze  554:                        if (c <= 0)
                    555:                                continue;
1.246     schwarze  556:                        break;
                    557:                case ESCAPE_UNDEF:
                    558:                        c = *seq;
1.132     kristaps  559:                        break;
1.239     schwarze  560:                case ESCAPE_DEVICE:
                    561:                        print_word(h, "html");
                    562:                        continue;
1.214     schwarze  563:                case ESCAPE_BREAK:
                    564:                        breakline = 1;
                    565:                        continue;
1.156     schwarze  566:                case ESCAPE_NOSPACE:
1.132     kristaps  567:                        if ('\0' == *p)
                    568:                                nospace = 1;
1.179     schwarze  569:                        continue;
1.185     schwarze  570:                case ESCAPE_OVERSTRIKE:
                    571:                        if (len == 0)
                    572:                                continue;
                    573:                        c = seq[len - 1];
                    574:                        break;
1.82      kristaps  575:                default:
1.179     schwarze  576:                        continue;
1.82      kristaps  577:                }
1.181     schwarze  578:                if ((c < 0x20 && c != 0x09) ||
                    579:                    (c > 0x7E && c < 0xA0))
1.179     schwarze  580:                        c = 0xFFFD;
1.197     schwarze  581:                if (c > 0x7E) {
1.216     schwarze  582:                        (void)snprintf(numbuf, sizeof(numbuf), "&#x%.4X;", c);
1.197     schwarze  583:                        print_word(h, numbuf);
                    584:                } else if (print_escape(h, c) == 0)
                    585:                        print_byte(h, c);
1.32      kristaps  586:        }
1.85      kristaps  587:
1.188     schwarze  588:        return nospace;
1.14      kristaps  589: }
                    590:
1.94      kristaps  591: static void
1.195     schwarze  592: print_href(struct html *h, const char *name, const char *sec, int man)
1.94      kristaps  593: {
1.240     schwarze  594:        struct stat      sb;
1.195     schwarze  595:        const char      *p, *pp;
1.240     schwarze  596:        char            *filename;
                    597:
                    598:        if (man) {
                    599:                pp = h->base_man1;
                    600:                if (h->base_man2 != NULL) {
                    601:                        mandoc_asprintf(&filename, "%s.%s", name, sec);
                    602:                        if (stat(filename, &sb) == -1)
                    603:                                pp = h->base_man2;
                    604:                        free(filename);
                    605:                }
                    606:        } else
                    607:                pp = h->base_includes;
1.195     schwarze  608:
                    609:        while ((p = strchr(pp, '%')) != NULL) {
                    610:                print_encode(h, pp, p, 1);
                    611:                if (man && p[1] == 'S') {
                    612:                        if (sec == NULL)
1.197     schwarze  613:                                print_byte(h, '1');
1.195     schwarze  614:                        else
                    615:                                print_encode(h, sec, NULL, 1);
                    616:                } else if ((man && p[1] == 'N') ||
                    617:                    (man == 0 && p[1] == 'I'))
                    618:                        print_encode(h, name, NULL, 1);
                    619:                else
                    620:                        print_encode(h, p, p + 2, 1);
                    621:                pp = p + 2;
                    622:        }
                    623:        if (*pp != '\0')
                    624:                print_encode(h, pp, NULL, 1);
1.94      kristaps  625: }
                    626:
1.51      kristaps  627: struct tag *
1.194     schwarze  628: print_otag(struct html *h, enum htmltag tag, const char *fmt, ...)
1.14      kristaps  629: {
1.194     schwarze  630:        va_list          ap;
1.30      kristaps  631:        struct tag      *t;
1.195     schwarze  632:        const char      *attr;
1.203     schwarze  633:        char            *arg1, *arg2;
1.244     schwarze  634:        int              style_written, tflags;
1.196     schwarze  635:
                    636:        tflags = htmltags[tag].flags;
1.30      kristaps  637:
1.257     schwarze  638:        /* Flow content is not allowed in phrasing context. */
                    639:
                    640:        if ((tflags & HTML_INPHRASE) == 0) {
                    641:                for (t = h->tag; t != NULL; t = t->next) {
                    642:                        if (t->closed)
                    643:                                continue;
                    644:                        assert((htmltags[t->tag].flags & HTML_TOPHRASE) == 0);
                    645:                        break;
                    646:                }
1.260     schwarze  647:
                    648:        /*
                    649:         * Always wrap phrasing elements in a paragraph
                    650:         * unless already contained in some flow container;
                    651:         * never put them directly into a section.
                    652:         */
                    653:
                    654:        } else if (tflags & HTML_TOPHRASE && h->tag->tag == TAG_SECTION)
                    655:                print_otag(h, TAG_P, "c", "Pp");
1.257     schwarze  656:
1.204     schwarze  657:        /* Push this tag onto the stack of open scopes. */
1.94      kristaps  658:
1.196     schwarze  659:        if ((tflags & HTML_NOSTACK) == 0) {
1.128     kristaps  660:                t = mandoc_malloc(sizeof(struct tag));
1.30      kristaps  661:                t->tag = tag;
1.204     schwarze  662:                t->next = h->tag;
1.252     schwarze  663:                t->refcnt = 0;
                    664:                t->closed = 0;
1.204     schwarze  665:                h->tag = t;
1.30      kristaps  666:        } else
                    667:                t = NULL;
1.29      kristaps  668:
1.196     schwarze  669:        if (tflags & HTML_NLBEFORE)
1.197     schwarze  670:                print_endline(h);
                    671:        if (h->col == 0)
                    672:                print_indent(h);
1.196     schwarze  673:        else if ((h->flags & HTML_NOSPACE) == 0) {
                    674:                if (h->flags & HTML_KEEP)
1.216     schwarze  675:                        print_word(h, "&#x00A0;");
1.196     schwarze  676:                else {
                    677:                        if (h->flags & HTML_PREKEEP)
                    678:                                h->flags |= HTML_KEEP;
1.197     schwarze  679:                        print_endword(h);
1.105     kristaps  680:                }
1.196     schwarze  681:        }
1.29      kristaps  682:
1.109     kristaps  683:        if ( ! (h->flags & HTML_NONOSPACE))
                    684:                h->flags &= ~HTML_NOSPACE;
1.110     kristaps  685:        else
                    686:                h->flags |= HTML_NOSPACE;
1.109     kristaps  687:
1.94      kristaps  688:        /* Print out the tag name and attributes. */
                    689:
1.197     schwarze  690:        print_byte(h, '<');
                    691:        print_word(h, htmltags[tag].name);
1.194     schwarze  692:
                    693:        va_start(ap, fmt);
                    694:
1.244     schwarze  695:        while (*fmt != '\0' && *fmt != 's') {
1.203     schwarze  696:
1.238     schwarze  697:                /* Parse attributes and arguments. */
1.203     schwarze  698:
                    699:                arg1 = va_arg(ap, char *);
1.238     schwarze  700:                arg2 = NULL;
1.194     schwarze  701:                switch (*fmt++) {
                    702:                case 'c':
1.195     schwarze  703:                        attr = "class";
1.194     schwarze  704:                        break;
                    705:                case 'h':
1.195     schwarze  706:                        attr = "href";
1.194     schwarze  707:                        break;
                    708:                case 'i':
1.195     schwarze  709:                        attr = "id";
1.194     schwarze  710:                        break;
                    711:                case '?':
1.203     schwarze  712:                        attr = arg1;
                    713:                        arg1 = va_arg(ap, char *);
1.194     schwarze  714:                        break;
                    715:                default:
                    716:                        abort();
                    717:                }
1.203     schwarze  718:                if (*fmt == 'M')
                    719:                        arg2 = va_arg(ap, char *);
                    720:                if (arg1 == NULL)
                    721:                        continue;
                    722:
1.238     schwarze  723:                /* Print the attributes. */
1.203     schwarze  724:
1.197     schwarze  725:                print_byte(h, ' ');
                    726:                print_word(h, attr);
                    727:                print_byte(h, '=');
                    728:                print_byte(h, '"');
1.195     schwarze  729:                switch (*fmt) {
1.208     schwarze  730:                case 'I':
                    731:                        print_href(h, arg1, NULL, 0);
                    732:                        fmt++;
                    733:                        break;
1.195     schwarze  734:                case 'M':
1.203     schwarze  735:                        print_href(h, arg1, arg2, 1);
1.195     schwarze  736:                        fmt++;
                    737:                        break;
1.208     schwarze  738:                case 'R':
                    739:                        print_byte(h, '#');
                    740:                        print_encode(h, arg1, NULL, 1);
1.195     schwarze  741:                        fmt++;
1.208     schwarze  742:                        break;
1.195     schwarze  743:                default:
1.244     schwarze  744:                        print_encode(h, arg1, NULL, 1);
1.195     schwarze  745:                        break;
                    746:                }
1.197     schwarze  747:                print_byte(h, '"');
1.194     schwarze  748:        }
1.244     schwarze  749:
                    750:        style_written = 0;
                    751:        while (*fmt++ == 's') {
                    752:                arg1 = va_arg(ap, char *);
                    753:                arg2 = va_arg(ap, char *);
                    754:                if (arg2 == NULL)
                    755:                        continue;
                    756:                print_byte(h, ' ');
                    757:                if (style_written == 0) {
                    758:                        print_word(h, "style=\"");
                    759:                        style_written = 1;
                    760:                }
                    761:                print_word(h, arg1);
                    762:                print_byte(h, ':');
                    763:                print_byte(h, ' ');
                    764:                print_word(h, arg2);
                    765:                print_byte(h, ';');
                    766:        }
                    767:        if (style_written)
                    768:                print_byte(h, '"');
                    769:
1.194     schwarze  770:        va_end(ap);
1.94      kristaps  771:
1.172     kristaps  772:        /* Accommodate for "well-formed" singleton escaping. */
1.94      kristaps  773:
1.257     schwarze  774:        if (htmltags[tag].flags & HTML_NOSTACK)
1.197     schwarze  775:                print_byte(h, '/');
1.93      kristaps  776:
1.197     schwarze  777:        print_byte(h, '>');
1.14      kristaps  778:
1.196     schwarze  779:        if (tflags & HTML_NLBEGIN)
1.197     schwarze  780:                print_endline(h);
1.196     schwarze  781:        else
                    782:                h->flags |= HTML_NOSPACE;
1.117     kristaps  783:
1.196     schwarze  784:        if (tflags & HTML_INDENT)
                    785:                h->indent++;
                    786:        if (tflags & HTML_NOINDENT)
                    787:                h->noindent++;
1.117     kristaps  788:
1.188     schwarze  789:        return t;
1.264     schwarze  790: }
                    791:
                    792: /*
                    793:  * Print an element with an optional "id=" attribute.
1.265     schwarze  794:  * If the element has phrasing content and an "id=" attribute,
                    795:  * also add a permalink: outside if it can be in phrasing context,
                    796:  * inside otherwise.
1.264     schwarze  797:  */
                    798: struct tag *
                    799: print_otag_id(struct html *h, enum htmltag elemtype, const char *cattr,
                    800:     struct roff_node *n)
                    801: {
1.265     schwarze  802:        struct roff_node *nch;
1.264     schwarze  803:        struct tag      *ret, *t;
1.266     schwarze  804:        char            *id, *href;
1.264     schwarze  805:
                    806:        ret = NULL;
1.266     schwarze  807:        id = href = NULL;
1.264     schwarze  808:        if (n->flags & NODE_ID)
                    809:                id = html_make_id(n, 1);
1.266     schwarze  810:        if (n->flags & NODE_HREF)
1.269     schwarze  811:                href = id == NULL ? html_make_id(n, 2) : id;
1.266     schwarze  812:        if (href != NULL && htmltags[elemtype].flags & HTML_INPHRASE)
                    813:                ret = print_otag(h, TAG_A, "chR", "permalink", href);
1.264     schwarze  814:        t = print_otag(h, elemtype, "ci", cattr, id);
                    815:        if (ret == NULL) {
                    816:                ret = t;
1.266     schwarze  817:                if (href != NULL && (nch = n->child) != NULL) {
1.265     schwarze  818:                        /* man(7) is safe, it tags phrasing content only. */
                    819:                        if (n->tok > MDOC_MAX ||
                    820:                            htmltags[elemtype].flags & HTML_TOPHRASE)
                    821:                                nch = NULL;
                    822:                        else  /* For mdoc(7), beware of nested blocks. */
                    823:                                while (nch != NULL && nch->type == ROFFT_TEXT)
                    824:                                        nch = nch->next;
                    825:                        if (nch == NULL)
1.266     schwarze  826:                                print_otag(h, TAG_A, "chR", "permalink", href);
1.265     schwarze  827:                }
1.264     schwarze  828:        }
1.269     schwarze  829:        free(id);
1.266     schwarze  830:        if (id == NULL)
                    831:                free(href);
1.264     schwarze  832:        return ret;
1.14      kristaps  833: }
                    834:
1.29      kristaps  835: static void
1.184     schwarze  836: print_ctag(struct html *h, struct tag *tag)
1.14      kristaps  837: {
1.196     schwarze  838:        int      tflags;
1.156     schwarze  839:
1.252     schwarze  840:        if (tag->closed == 0) {
                    841:                tag->closed = 1;
                    842:                if (tag == h->metaf)
                    843:                        h->metaf = NULL;
                    844:                if (tag == h->tblt)
                    845:                        h->tblt = NULL;
                    846:
                    847:                tflags = htmltags[tag->tag].flags;
                    848:                if (tflags & HTML_INDENT)
                    849:                        h->indent--;
                    850:                if (tflags & HTML_NOINDENT)
                    851:                        h->noindent--;
                    852:                if (tflags & HTML_NLEND)
                    853:                        print_endline(h);
                    854:                print_indent(h);
                    855:                print_byte(h, '<');
                    856:                print_byte(h, '/');
                    857:                print_word(h, htmltags[tag->tag].name);
                    858:                print_byte(h, '>');
                    859:                if (tflags & HTML_NLAFTER)
                    860:                        print_endline(h);
                    861:        }
                    862:        if (tag->refcnt == 0) {
                    863:                h->tag = tag->next;
                    864:                free(tag);
                    865:        }
1.14      kristaps  866: }
                    867:
1.51      kristaps  868: void
1.93      kristaps  869: print_gen_decls(struct html *h)
1.1       kristaps  870: {
1.197     schwarze  871:        print_word(h, "<!DOCTYPE html>");
                    872:        print_endline(h);
1.221     schwarze  873: }
                    874:
                    875: void
                    876: print_gen_comment(struct html *h, struct roff_node *n)
                    877: {
                    878:        int      wantblank;
                    879:
                    880:        print_word(h, "<!-- This is an automatically generated file."
                    881:            "  Do not edit.");
                    882:        h->indent = 1;
                    883:        wantblank = 0;
                    884:        while (n != NULL && n->type == ROFFT_COMMENT) {
                    885:                if (strstr(n->string, "-->") == NULL &&
                    886:                    (wantblank || *n->string != '\0')) {
                    887:                        print_endline(h);
                    888:                        print_indent(h);
                    889:                        print_word(h, n->string);
                    890:                        wantblank = *n->string != '\0';
                    891:                }
                    892:                n = n->next;
                    893:        }
                    894:        if (wantblank)
                    895:                print_endline(h);
                    896:        print_word(h, " -->");
                    897:        print_endline(h);
                    898:        h->indent = 0;
1.1       kristaps  899: }
                    900:
1.51      kristaps  901: void
1.104     kristaps  902: print_text(struct html *h, const char *word)
1.1       kristaps  903: {
1.268     schwarze  904:        print_tagged_text(h, word, NULL);
                    905: }
                    906:
                    907: void
                    908: print_tagged_text(struct html *h, const char *word, struct roff_node *n)
                    909: {
                    910:        struct tag      *t;
                    911:        char            *href;
                    912:
1.260     schwarze  913:        /*
                    914:         * Always wrap text in a paragraph unless already contained in
                    915:         * some flow container; never put it directly into a section.
                    916:         */
                    917:
                    918:        if (h->tag->tag == TAG_SECTION)
                    919:                print_otag(h, TAG_P, "c", "Pp");
                    920:
                    921:        /* Output whitespace before this text? */
                    922:
1.197     schwarze  923:        if (h->col && (h->flags & HTML_NOSPACE) == 0) {
1.105     kristaps  924:                if ( ! (HTML_KEEP & h->flags)) {
                    925:                        if (HTML_PREKEEP & h->flags)
                    926:                                h->flags |= HTML_KEEP;
1.197     schwarze  927:                        print_endword(h);
1.105     kristaps  928:                } else
1.216     schwarze  929:                        print_word(h, "&#x00A0;");
1.105     kristaps  930:        }
1.260     schwarze  931:
                    932:        /*
1.268     schwarze  933:         * Optionally switch fonts, optionally write a permalink, then
                    934:         * print the text, optionally surrounded by HTML whitespace.
1.260     schwarze  935:         */
1.30      kristaps  936:
1.255     schwarze  937:        assert(h->metaf == NULL);
                    938:        print_metaf(h);
                    939:        print_indent(h);
1.268     schwarze  940:
1.269     schwarze  941:        if (n != NULL && (href = html_make_id(n, 2)) != NULL) {
1.268     schwarze  942:                t = print_otag(h, TAG_A, "chR", "permalink", href);
                    943:                free(href);
                    944:        } else
                    945:                t = NULL;
                    946:
1.195     schwarze  947:        if ( ! print_encode(h, word, NULL, 0)) {
1.109     kristaps  948:                if ( ! (h->flags & HTML_NONOSPACE))
                    949:                        h->flags &= ~HTML_NOSPACE;
1.183     schwarze  950:                h->flags &= ~HTML_NONEWLINE;
1.149     kristaps  951:        } else
1.183     schwarze  952:                h->flags |= HTML_NOSPACE | HTML_NONEWLINE;
1.122     kristaps  953:
1.255     schwarze  954:        if (h->metaf != NULL) {
1.122     kristaps  955:                print_tagq(h, h->metaf);
                    956:                h->metaf = NULL;
1.268     schwarze  957:        } else if (t != NULL)
                    958:                print_tagq(h, t);
1.113     schwarze  959:
                    960:        h->flags &= ~HTML_IGNDELIM;
1.1       kristaps  961: }
1.30      kristaps  962:
1.51      kristaps  963: void
1.30      kristaps  964: print_tagq(struct html *h, const struct tag *until)
                    965: {
1.252     schwarze  966:        struct tag      *this, *next;
1.30      kristaps  967:
1.252     schwarze  968:        for (this = h->tag; this != NULL; this = next) {
                    969:                next = this == until ? NULL : this->next;
                    970:                print_ctag(h, this);
1.30      kristaps  971:        }
                    972: }
                    973:
1.250     schwarze  974: /*
                    975:  * Close out all open elements up to but excluding suntil.
                    976:  * Note that a paragraph just inside stays open together with it
                    977:  * because paragraphs include subsequent phrasing content.
                    978:  */
1.51      kristaps  979: void
1.30      kristaps  980: print_stagq(struct html *h, const struct tag *suntil)
                    981: {
1.252     schwarze  982:        struct tag      *this, *next;
1.30      kristaps  983:
1.252     schwarze  984:        for (this = h->tag; this != NULL; this = next) {
                    985:                next = this->next;
                    986:                if (this == suntil || (next == suntil &&
                    987:                    (this->tag == TAG_P || this->tag == TAG_PRE)))
                    988:                        break;
                    989:                print_ctag(h, this);
1.30      kristaps  990:        }
1.171     kristaps  991: }
                    992:
1.197     schwarze  993:
                    994: /***********************************************************************
                    995:  * Low level output functions.
                    996:  * They implement line breaking using a short static buffer.
                    997:  ***********************************************************************/
                    998:
                    999: /*
                   1000:  * Buffer one HTML output byte.
                   1001:  * If the buffer is full, flush and deactivate it and start a new line.
                   1002:  * If the buffer is inactive, print directly.
                   1003:  */
                   1004: static void
                   1005: print_byte(struct html *h, char c)
                   1006: {
                   1007:        if ((h->flags & HTML_BUFFER) == 0) {
                   1008:                putchar(c);
                   1009:                h->col++;
                   1010:                return;
                   1011:        }
                   1012:
                   1013:        if (h->col + h->bufcol < sizeof(h->buf)) {
                   1014:                h->buf[h->bufcol++] = c;
                   1015:                return;
                   1016:        }
                   1017:
                   1018:        putchar('\n');
                   1019:        h->col = 0;
                   1020:        print_indent(h);
                   1021:        putchar(' ');
                   1022:        putchar(' ');
                   1023:        fwrite(h->buf, h->bufcol, 1, stdout);
                   1024:        putchar(c);
                   1025:        h->col = (h->indent + 1) * 2 + h->bufcol + 1;
                   1026:        h->bufcol = 0;
                   1027:        h->flags &= ~HTML_BUFFER;
                   1028: }
                   1029:
1.196     schwarze 1030: /*
                   1031:  * If something was printed on the current output line, end it.
1.197     schwarze 1032:  * Not to be called right after print_indent().
1.196     schwarze 1033:  */
1.202     schwarze 1034: void
1.197     schwarze 1035: print_endline(struct html *h)
1.196     schwarze 1036: {
1.197     schwarze 1037:        if (h->col == 0)
1.196     schwarze 1038:                return;
                   1039:
1.197     schwarze 1040:        if (h->bufcol) {
                   1041:                putchar(' ');
                   1042:                fwrite(h->buf, h->bufcol, 1, stdout);
                   1043:                h->bufcol = 0;
                   1044:        }
1.196     schwarze 1045:        putchar('\n');
1.197     schwarze 1046:        h->col = 0;
                   1047:        h->flags |= HTML_NOSPACE;
                   1048:        h->flags &= ~HTML_BUFFER;
                   1049: }
                   1050:
                   1051: /*
                   1052:  * Flush the HTML output buffer.
                   1053:  * If it is inactive, activate it.
                   1054:  */
                   1055: static void
                   1056: print_endword(struct html *h)
                   1057: {
                   1058:        if (h->noindent) {
                   1059:                print_byte(h, ' ');
                   1060:                return;
                   1061:        }
                   1062:
                   1063:        if ((h->flags & HTML_BUFFER) == 0) {
                   1064:                h->col++;
                   1065:                h->flags |= HTML_BUFFER;
                   1066:        } else if (h->bufcol) {
                   1067:                putchar(' ');
                   1068:                fwrite(h->buf, h->bufcol, 1, stdout);
                   1069:                h->col += h->bufcol + 1;
                   1070:        }
                   1071:        h->bufcol = 0;
1.196     schwarze 1072: }
                   1073:
                   1074: /*
                   1075:  * If at the beginning of a new output line,
                   1076:  * perform indentation and mark the line as containing output.
                   1077:  * Make sure to really produce some output right afterwards,
                   1078:  * but do not use print_otag() for producing it.
                   1079:  */
                   1080: static void
1.197     schwarze 1081: print_indent(struct html *h)
1.196     schwarze 1082: {
1.197     schwarze 1083:        size_t   i;
1.196     schwarze 1084:
1.261     schwarze 1085:        if (h->col || h->noindent)
1.196     schwarze 1086:                return;
                   1087:
1.261     schwarze 1088:        h->col = h->indent * 2;
                   1089:        for (i = 0; i < h->col; i++)
                   1090:                putchar(' ');
1.197     schwarze 1091: }
                   1092:
                   1093: /*
                   1094:  * Print or buffer some characters
                   1095:  * depending on the current HTML output buffer state.
                   1096:  */
                   1097: static void
                   1098: print_word(struct html *h, const char *cp)
                   1099: {
                   1100:        while (*cp != '\0')
                   1101:                print_byte(h, *cp++);
1.68      kristaps 1102: }

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