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

Annotation of mandoc/html.c, Revision 1.271

1.271   ! schwarze    1: /* $Id: html.c,v 1.270 2020/04/20 13:07:24 schwarze Exp $ */
1.1       kristaps    2: /*
1.264     schwarze    3:  * Copyright (c) 2011-2015, 2017-2020 Ingo Schwarze <schwarze@openbsd.org>
1.176     schwarze    4:  * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
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},
1.263     schwarze   94:        {"mark",        HTML_INPHRASE },
1.257     schwarze   95:        {"math",        HTML_INPHRASE | HTML_NLALL | HTML_INDENT},
1.196     schwarze   96:        {"mrow",        0},
                     97:        {"mi",          0},
1.215     schwarze   98:        {"mn",          0},
1.196     schwarze   99:        {"mo",          0},
                    100:        {"msup",        0},
                    101:        {"msub",        0},
                    102:        {"msubsup",     0},
                    103:        {"mfrac",       0},
                    104:        {"msqrt",       0},
                    105:        {"mfenced",     0},
                    106:        {"mtable",      0},
                    107:        {"mtr",         0},
                    108:        {"mtd",         0},
                    109:        {"munderover",  0},
                    110:        {"munder",      0},
                    111:        {"mover",       0},
1.90      kristaps  112: };
                    113:
1.229     schwarze  114: /* Avoid duplicate HTML id= attributes. */
1.269     schwarze  115:
                    116: struct id_entry {
                    117:        int      ord;   /* Ordinal number of the latest occurrence. */
                    118:        char     id[];  /* The id= attribute without any ordinal suffix. */
                    119: };
1.229     schwarze  120: static struct ohash     id_unique;
                    121:
1.254     schwarze  122: static void     html_reset_internal(struct html *);
1.197     schwarze  123: static void     print_byte(struct html *, char);
                    124: static void     print_endword(struct html *);
                    125: static void     print_indent(struct html *);
                    126: static void     print_word(struct html *, const char *);
                    127:
1.184     schwarze  128: static void     print_ctag(struct html *, struct tag *);
1.197     schwarze  129: static int      print_escape(struct html *, char);
1.195     schwarze  130: static int      print_encode(struct html *, const char *, const char *, int);
                    131: static void     print_href(struct html *, const char *, const char *, int);
1.255     schwarze  132: static void     print_metaf(struct html *);
1.82      kristaps  133:
1.156     schwarze  134:
1.180     schwarze  135: void *
1.191     schwarze  136: html_alloc(const struct manoutput *outopts)
1.10      kristaps  137: {
1.30      kristaps  138:        struct html     *h;
                    139:
1.128     kristaps  140:        h = mandoc_calloc(1, sizeof(struct html));
1.10      kristaps  141:
1.204     schwarze  142:        h->tag = NULL;
1.186     schwarze  143:        h->style = outopts->style;
1.240     schwarze  144:        if ((h->base_man1 = outopts->man) == NULL)
                    145:                h->base_man2 = NULL;
                    146:        else if ((h->base_man2 = strchr(h->base_man1, ';')) != NULL)
                    147:                *h->base_man2++ = '\0';
1.186     schwarze  148:        h->base_includes = outopts->includes;
                    149:        if (outopts->fragment)
                    150:                h->oflags |= HTML_FRAGMENT;
1.241     schwarze  151:        if (outopts->toc)
                    152:                h->oflags |= HTML_TOC;
1.43      kristaps  153:
1.269     schwarze  154:        mandoc_ohash_init(&id_unique, 4, offsetof(struct id_entry, id));
1.229     schwarze  155:
1.188     schwarze  156:        return h;
1.29      kristaps  157: }
1.10      kristaps  158:
1.254     schwarze  159: static void
                    160: html_reset_internal(struct html *h)
1.29      kristaps  161: {
1.30      kristaps  162:        struct tag      *tag;
1.269     schwarze  163:        struct id_entry *entry;
1.229     schwarze  164:        unsigned int     slot;
1.30      kristaps  165:
1.204     schwarze  166:        while ((tag = h->tag) != NULL) {
                    167:                h->tag = tag->next;
1.30      kristaps  168:                free(tag);
                    169:        }
1.269     schwarze  170:        entry = ohash_first(&id_unique, &slot);
                    171:        while (entry != NULL) {
                    172:                free(entry);
                    173:                entry = ohash_next(&id_unique, &slot);
1.229     schwarze  174:        }
                    175:        ohash_delete(&id_unique);
1.254     schwarze  176: }
                    177:
                    178: void
                    179: html_reset(void *p)
                    180: {
                    181:        html_reset_internal(p);
1.269     schwarze  182:        mandoc_ohash_init(&id_unique, 4, offsetof(struct id_entry, id));
1.254     schwarze  183: }
                    184:
                    185: void
                    186: html_free(void *p)
                    187: {
                    188:        html_reset_internal(p);
                    189:        free(p);
1.10      kristaps  190: }
1.2       kristaps  191:
1.51      kristaps  192: void
1.29      kristaps  193: print_gen_head(struct html *h)
                    194: {
1.165     kristaps  195:        struct tag      *t;
1.41      kristaps  196:
1.194     schwarze  197:        print_otag(h, TAG_META, "?", "charset", "utf-8");
1.222     schwarze  198:        if (h->style != NULL) {
                    199:                print_otag(h, TAG_LINK, "?h??", "rel", "stylesheet",
                    200:                    h->style, "type", "text/css", "media", "all");
                    201:                return;
                    202:        }
1.165     kristaps  203:
1.168     kristaps  204:        /*
1.222     schwarze  205:         * Print a minimal embedded style sheet.
1.168     kristaps  206:         */
1.196     schwarze  207:
1.194     schwarze  208:        t = print_otag(h, TAG_STYLE, "");
1.196     schwarze  209:        print_text(h, "table.head, table.foot { width: 100%; }");
1.197     schwarze  210:        print_endline(h);
1.196     schwarze  211:        print_text(h, "td.head-rtitle, td.foot-os { text-align: right; }");
1.197     schwarze  212:        print_endline(h);
1.196     schwarze  213:        print_text(h, "td.head-vol { text-align: center; }");
1.197     schwarze  214:        print_endline(h);
1.256     schwarze  215:        print_text(h, ".Nd, .Bf, .Op { display: inline; }");
1.225     schwarze  216:        print_endline(h);
1.256     schwarze  217:        print_text(h, ".Pa, .Ad { font-style: italic; }");
1.226     schwarze  218:        print_endline(h);
1.256     schwarze  219:        print_text(h, ".Ms { font-weight: bold; }");
1.228     schwarze  220:        print_endline(h);
1.256     schwarze  221:        print_text(h, ".Bl-diag ");
1.224     schwarze  222:        print_byte(h, '>');
                    223:        print_text(h, " dt { font-weight: bold; }");
1.223     schwarze  224:        print_endline(h);
1.256     schwarze  225:        print_text(h, "code.Nm, .Fl, .Cm, .Ic, code.In, .Fd, .Fn, .Cd "
                    226:            "{ font-weight: bold; font-family: inherit; }");
1.165     kristaps  227:        print_tagq(h, t);
1.4       kristaps  228: }
                    229:
1.255     schwarze  230: int
                    231: html_setfont(struct html *h, enum mandoc_esc font)
1.88      kristaps  232: {
1.255     schwarze  233:        switch (font) {
1.156     schwarze  234:        case ESCAPE_FONTPREV:
1.90      kristaps  235:                font = h->metal;
1.88      kristaps  236:                break;
1.156     schwarze  237:        case ESCAPE_FONTITALIC:
                    238:        case ESCAPE_FONTBOLD:
                    239:        case ESCAPE_FONTBI:
1.242     schwarze  240:        case ESCAPE_FONTCW:
1.255     schwarze  241:        case ESCAPE_FONTROMAN:
1.242     schwarze  242:                break;
1.156     schwarze  243:        case ESCAPE_FONT:
1.255     schwarze  244:                font = ESCAPE_FONTROMAN;
1.88      kristaps  245:                break;
                    246:        default:
1.255     schwarze  247:                return 0;
1.88      kristaps  248:        }
1.255     schwarze  249:        h->metal = h->metac;
                    250:        h->metac = font;
                    251:        return 1;
                    252: }
1.88      kristaps  253:
1.255     schwarze  254: static void
                    255: print_metaf(struct html *h)
                    256: {
1.122     kristaps  257:        if (h->metaf) {
                    258:                print_tagq(h, h->metaf);
                    259:                h->metaf = NULL;
                    260:        }
1.255     schwarze  261:        switch (h->metac) {
                    262:        case ESCAPE_FONTITALIC:
1.194     schwarze  263:                h->metaf = print_otag(h, TAG_I, "");
1.152     schwarze  264:                break;
1.255     schwarze  265:        case ESCAPE_FONTBOLD:
1.194     schwarze  266:                h->metaf = print_otag(h, TAG_B, "");
1.152     schwarze  267:                break;
1.255     schwarze  268:        case ESCAPE_FONTBI:
1.194     schwarze  269:                h->metaf = print_otag(h, TAG_B, "");
                    270:                print_otag(h, TAG_I, "");
1.152     schwarze  271:                break;
1.255     schwarze  272:        case ESCAPE_FONTCW:
1.242     schwarze  273:                h->metaf = print_otag(h, TAG_SPAN, "c", "Li");
                    274:                break;
1.152     schwarze  275:        default:
                    276:                break;
                    277:        }
1.248     schwarze  278: }
                    279:
1.249     schwarze  280: void
                    281: html_close_paragraph(struct html *h)
                    282: {
1.259     schwarze  283:        struct tag      *this, *next;
                    284:        int              flags;
1.249     schwarze  285:
1.259     schwarze  286:        this = h->tag;
                    287:        for (;;) {
                    288:                next = this->next;
                    289:                flags = htmltags[this->tag].flags;
                    290:                if (flags & (HTML_INPHRASE | HTML_TOPHRASE))
                    291:                        print_ctag(h, this);
                    292:                if ((flags & HTML_INPHRASE) == 0)
1.249     schwarze  293:                        break;
1.259     schwarze  294:                this = next;
1.249     schwarze  295:        }
                    296: }
                    297:
1.248     schwarze  298: /*
                    299:  * ROFF_nf switches to no-fill mode, ROFF_fi to fill mode.
                    300:  * TOKEN_NONE does not switch.  The old mode is returned.
                    301:  */
                    302: enum roff_tok
                    303: html_fillmode(struct html *h, enum roff_tok want)
                    304: {
                    305:        struct tag      *t;
                    306:        enum roff_tok    had;
                    307:
                    308:        for (t = h->tag; t != NULL; t = t->next)
                    309:                if (t->tag == TAG_PRE)
                    310:                        break;
                    311:
                    312:        had = t == NULL ? ROFF_fi : ROFF_nf;
                    313:
                    314:        if (want != had) {
                    315:                switch (want) {
                    316:                case ROFF_fi:
                    317:                        print_tagq(h, t);
                    318:                        break;
                    319:                case ROFF_nf:
1.249     schwarze  320:                        html_close_paragraph(h);
1.248     schwarze  321:                        print_otag(h, TAG_PRE, "");
                    322:                        break;
                    323:                case TOKEN_NONE:
                    324:                        break;
                    325:                default:
                    326:                        abort();
                    327:                }
                    328:        }
                    329:        return had;
1.210     schwarze  330: }
                    331:
1.264     schwarze  332: /*
                    333:  * Allocate a string to be used for the "id=" attribute of an HTML
                    334:  * element and/or as a segment identifier for a URI in an <a> element.
                    335:  * The function may fail and return NULL if the node lacks text data
                    336:  * to create the attribute from.
1.269     schwarze  337:  * The caller is responsible for free(3)ing the returned string.
                    338:  *
1.264     schwarze  339:  * If the "unique" argument is non-zero, the "id_unique" ohash table
1.269     schwarze  340:  * is used for de-duplication.  If the "unique" argument is 1,
                    341:  * it is the first time the function is called for this tag and
                    342:  * location, so if an ordinal suffix is needed, it is incremented.
                    343:  * If the "unique" argument is 2, it is the second time the function
                    344:  * is called for this tag and location, so the ordinal suffix
                    345:  * remains unchanged.
1.264     schwarze  346:  */
1.210     schwarze  347: char *
1.229     schwarze  348: html_make_id(const struct roff_node *n, int unique)
1.210     schwarze  349: {
                    350:        const struct roff_node  *nch;
1.269     schwarze  351:        struct id_entry         *entry;
                    352:        char                    *buf, *cp;
                    353:        size_t                   len;
1.229     schwarze  354:        unsigned int             slot;
1.210     schwarze  355:
1.267     schwarze  356:        if (n->tag != NULL)
                    357:                buf = mandoc_strdup(n->tag);
1.264     schwarze  358:        else {
                    359:                switch (n->tok) {
                    360:                case MDOC_Sh:
                    361:                case MDOC_Ss:
                    362:                case MDOC_Sx:
                    363:                case MAN_SH:
                    364:                case MAN_SS:
                    365:                        for (nch = n->child; nch != NULL; nch = nch->next)
                    366:                                if (nch->type != ROFFT_TEXT)
                    367:                                        return NULL;
                    368:                        buf = NULL;
                    369:                        deroff(&buf, n);
                    370:                        if (buf == NULL)
                    371:                                return NULL;
                    372:                        break;
                    373:                default:
1.265     schwarze  374:                        if (n->child == NULL || n->child->type != ROFFT_TEXT)
1.264     schwarze  375:                                return NULL;
                    376:                        buf = mandoc_strdup(n->child->string);
                    377:                        break;
                    378:                }
                    379:        }
1.210     schwarze  380:
1.230     schwarze  381:        /*
                    382:         * In ID attributes, only use ASCII characters that are
                    383:         * permitted in URL-fragment strings according to the
                    384:         * explicit list at:
                    385:         * https://url.spec.whatwg.org/#url-fragment-string
1.270     schwarze  386:         * In addition, reserve '~' for ordinal suffixes.
1.230     schwarze  387:         */
1.210     schwarze  388:
                    389:        for (cp = buf; *cp != '\0'; cp++)
1.230     schwarze  390:                if (isalnum((unsigned char)*cp) == 0 &&
1.270     schwarze  391:                    strchr("!$&'()*+,-./:;=?@_", *cp) == NULL)
1.210     schwarze  392:                        *cp = '_';
                    393:
1.229     schwarze  394:        if (unique == 0)
                    395:                return buf;
                    396:
                    397:        /* Avoid duplicate HTML id= attributes. */
                    398:
                    399:        slot = ohash_qlookup(&id_unique, buf);
1.269     schwarze  400:        if ((entry = ohash_find(&id_unique, slot)) == NULL) {
                    401:                len = strlen(buf) + 1;
                    402:                entry = mandoc_malloc(sizeof(*entry) + len);
                    403:                entry->ord = 1;
                    404:                memcpy(entry->id, buf, len);
                    405:                ohash_insert(&id_unique, slot, entry);
                    406:        } else if (unique == 1)
                    407:                entry->ord++;
                    408:
                    409:        if (entry->ord > 1) {
                    410:                cp = buf;
1.270     schwarze  411:                mandoc_asprintf(&buf, "%s~%d", cp, entry->ord);
1.269     schwarze  412:                free(cp);
1.229     schwarze  413:        }
1.210     schwarze  414:        return buf;
1.88      kristaps  415: }
                    416:
1.85      kristaps  417: static int
1.197     schwarze  418: print_escape(struct html *h, char c)
1.159     schwarze  419: {
                    420:
                    421:        switch (c) {
                    422:        case '<':
1.197     schwarze  423:                print_word(h, "&lt;");
1.159     schwarze  424:                break;
                    425:        case '>':
1.197     schwarze  426:                print_word(h, "&gt;");
1.159     schwarze  427:                break;
                    428:        case '&':
1.197     schwarze  429:                print_word(h, "&amp;");
1.159     schwarze  430:                break;
                    431:        case '"':
1.197     schwarze  432:                print_word(h, "&quot;");
1.159     schwarze  433:                break;
                    434:        case ASCII_NBRSP:
1.197     schwarze  435:                print_word(h, "&nbsp;");
1.159     schwarze  436:                break;
                    437:        case ASCII_HYPH:
1.197     schwarze  438:                print_byte(h, '-');
1.189     schwarze  439:                break;
1.159     schwarze  440:        case ASCII_BREAK:
                    441:                break;
                    442:        default:
1.188     schwarze  443:                return 0;
1.159     schwarze  444:        }
1.188     schwarze  445:        return 1;
1.159     schwarze  446: }
                    447:
                    448: static int
1.195     schwarze  449: print_encode(struct html *h, const char *p, const char *pend, int norecurse)
1.29      kristaps  450: {
1.197     schwarze  451:        char             numbuf[16];
1.214     schwarze  452:        const char      *seq;
1.77      kristaps  453:        size_t           sz;
1.214     schwarze  454:        int              c, len, breakline, nospace;
1.132     kristaps  455:        enum mandoc_esc  esc;
1.214     schwarze  456:        static const char rejs[10] = { ' ', '\\', '<', '>', '&', '"',
1.154     schwarze  457:                ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' };
1.14      kristaps  458:
1.195     schwarze  459:        if (pend == NULL)
                    460:                pend = strchr(p, '\0');
                    461:
1.214     schwarze  462:        breakline = 0;
1.85      kristaps  463:        nospace = 0;
                    464:
1.195     schwarze  465:        while (p < pend) {
1.151     schwarze  466:                if (HTML_SKIPCHAR & h->flags && '\\' != *p) {
                    467:                        h->flags &= ~HTML_SKIPCHAR;
                    468:                        p++;
                    469:                        continue;
                    470:                }
                    471:
1.197     schwarze  472:                for (sz = strcspn(p, rejs); sz-- && p < pend; p++)
1.214     schwarze  473:                        print_byte(h, *p);
                    474:
                    475:                if (breakline &&
                    476:                    (p >= pend || *p == ' ' || *p == ASCII_NBRSP)) {
1.245     schwarze  477:                        print_otag(h, TAG_BR, "");
1.214     schwarze  478:                        breakline = 0;
                    479:                        while (p < pend && (*p == ' ' || *p == ASCII_NBRSP))
                    480:                                p++;
                    481:                        continue;
                    482:                }
1.77      kristaps  483:
1.195     schwarze  484:                if (p >= pend)
1.132     kristaps  485:                        break;
                    486:
1.214     schwarze  487:                if (*p == ' ') {
                    488:                        print_endword(h);
                    489:                        p++;
                    490:                        continue;
                    491:                }
                    492:
1.197     schwarze  493:                if (print_escape(h, *p++))
1.154     schwarze  494:                        continue;
1.77      kristaps  495:
1.132     kristaps  496:                esc = mandoc_escape(&p, &seq, &len);
                    497:                switch (esc) {
1.156     schwarze  498:                case ESCAPE_FONT:
                    499:                case ESCAPE_FONTPREV:
                    500:                case ESCAPE_FONTBOLD:
                    501:                case ESCAPE_FONTITALIC:
                    502:                case ESCAPE_FONTBI:
1.242     schwarze  503:                case ESCAPE_FONTCW:
1.156     schwarze  504:                case ESCAPE_FONTROMAN:
1.243     schwarze  505:                        if (0 == norecurse) {
                    506:                                h->flags |= HTML_NOSPACE;
1.255     schwarze  507:                                if (html_setfont(h, esc))
                    508:                                        print_metaf(h);
1.243     schwarze  509:                                h->flags &= ~HTML_NOSPACE;
                    510:                        }
1.151     schwarze  511:                        continue;
1.156     schwarze  512:                case ESCAPE_SKIPCHAR:
1.151     schwarze  513:                        h->flags |= HTML_SKIPCHAR;
                    514:                        continue;
1.246     schwarze  515:                case ESCAPE_ERROR:
                    516:                        continue;
1.151     schwarze  517:                default:
                    518:                        break;
                    519:                }
                    520:
                    521:                if (h->flags & HTML_SKIPCHAR) {
                    522:                        h->flags &= ~HTML_SKIPCHAR;
                    523:                        continue;
                    524:                }
                    525:
                    526:                switch (esc) {
1.156     schwarze  527:                case ESCAPE_UNICODE:
1.159     schwarze  528:                        /* Skip past "u" header. */
1.144     kristaps  529:                        c = mchars_num2uc(seq + 1, len - 1);
                    530:                        break;
1.156     schwarze  531:                case ESCAPE_NUMBERED:
1.141     kristaps  532:                        c = mchars_num2char(seq, len);
1.181     schwarze  533:                        if (c < 0)
                    534:                                continue;
1.82      kristaps  535:                        break;
1.156     schwarze  536:                case ESCAPE_SPECIAL:
1.191     schwarze  537:                        c = mchars_spec2cp(seq, len);
1.181     schwarze  538:                        if (c <= 0)
                    539:                                continue;
1.246     schwarze  540:                        break;
                    541:                case ESCAPE_UNDEF:
                    542:                        c = *seq;
1.132     kristaps  543:                        break;
1.239     schwarze  544:                case ESCAPE_DEVICE:
                    545:                        print_word(h, "html");
                    546:                        continue;
1.214     schwarze  547:                case ESCAPE_BREAK:
                    548:                        breakline = 1;
                    549:                        continue;
1.156     schwarze  550:                case ESCAPE_NOSPACE:
1.132     kristaps  551:                        if ('\0' == *p)
                    552:                                nospace = 1;
1.179     schwarze  553:                        continue;
1.185     schwarze  554:                case ESCAPE_OVERSTRIKE:
                    555:                        if (len == 0)
                    556:                                continue;
                    557:                        c = seq[len - 1];
                    558:                        break;
1.82      kristaps  559:                default:
1.179     schwarze  560:                        continue;
1.82      kristaps  561:                }
1.181     schwarze  562:                if ((c < 0x20 && c != 0x09) ||
                    563:                    (c > 0x7E && c < 0xA0))
1.179     schwarze  564:                        c = 0xFFFD;
1.197     schwarze  565:                if (c > 0x7E) {
1.216     schwarze  566:                        (void)snprintf(numbuf, sizeof(numbuf), "&#x%.4X;", c);
1.197     schwarze  567:                        print_word(h, numbuf);
                    568:                } else if (print_escape(h, c) == 0)
                    569:                        print_byte(h, c);
1.32      kristaps  570:        }
1.85      kristaps  571:
1.188     schwarze  572:        return nospace;
1.14      kristaps  573: }
                    574:
1.94      kristaps  575: static void
1.195     schwarze  576: print_href(struct html *h, const char *name, const char *sec, int man)
1.94      kristaps  577: {
1.240     schwarze  578:        struct stat      sb;
1.195     schwarze  579:        const char      *p, *pp;
1.240     schwarze  580:        char            *filename;
                    581:
                    582:        if (man) {
                    583:                pp = h->base_man1;
                    584:                if (h->base_man2 != NULL) {
                    585:                        mandoc_asprintf(&filename, "%s.%s", name, sec);
                    586:                        if (stat(filename, &sb) == -1)
                    587:                                pp = h->base_man2;
                    588:                        free(filename);
                    589:                }
                    590:        } else
                    591:                pp = h->base_includes;
1.195     schwarze  592:
                    593:        while ((p = strchr(pp, '%')) != NULL) {
                    594:                print_encode(h, pp, p, 1);
                    595:                if (man && p[1] == 'S') {
                    596:                        if (sec == NULL)
1.197     schwarze  597:                                print_byte(h, '1');
1.195     schwarze  598:                        else
                    599:                                print_encode(h, sec, NULL, 1);
                    600:                } else if ((man && p[1] == 'N') ||
                    601:                    (man == 0 && p[1] == 'I'))
                    602:                        print_encode(h, name, NULL, 1);
                    603:                else
                    604:                        print_encode(h, p, p + 2, 1);
                    605:                pp = p + 2;
                    606:        }
                    607:        if (*pp != '\0')
                    608:                print_encode(h, pp, NULL, 1);
1.94      kristaps  609: }
                    610:
1.51      kristaps  611: struct tag *
1.194     schwarze  612: print_otag(struct html *h, enum htmltag tag, const char *fmt, ...)
1.14      kristaps  613: {
1.194     schwarze  614:        va_list          ap;
1.30      kristaps  615:        struct tag      *t;
1.195     schwarze  616:        const char      *attr;
1.203     schwarze  617:        char            *arg1, *arg2;
1.244     schwarze  618:        int              style_written, tflags;
1.196     schwarze  619:
                    620:        tflags = htmltags[tag].flags;
1.30      kristaps  621:
1.257     schwarze  622:        /* Flow content is not allowed in phrasing context. */
                    623:
                    624:        if ((tflags & HTML_INPHRASE) == 0) {
                    625:                for (t = h->tag; t != NULL; t = t->next) {
                    626:                        if (t->closed)
                    627:                                continue;
                    628:                        assert((htmltags[t->tag].flags & HTML_TOPHRASE) == 0);
                    629:                        break;
                    630:                }
1.260     schwarze  631:
                    632:        /*
                    633:         * Always wrap phrasing elements in a paragraph
                    634:         * unless already contained in some flow container;
                    635:         * never put them directly into a section.
                    636:         */
                    637:
                    638:        } else if (tflags & HTML_TOPHRASE && h->tag->tag == TAG_SECTION)
                    639:                print_otag(h, TAG_P, "c", "Pp");
1.257     schwarze  640:
1.204     schwarze  641:        /* Push this tag onto the stack of open scopes. */
1.94      kristaps  642:
1.196     schwarze  643:        if ((tflags & HTML_NOSTACK) == 0) {
1.128     kristaps  644:                t = mandoc_malloc(sizeof(struct tag));
1.30      kristaps  645:                t->tag = tag;
1.204     schwarze  646:                t->next = h->tag;
1.252     schwarze  647:                t->refcnt = 0;
                    648:                t->closed = 0;
1.204     schwarze  649:                h->tag = t;
1.30      kristaps  650:        } else
                    651:                t = NULL;
1.29      kristaps  652:
1.196     schwarze  653:        if (tflags & HTML_NLBEFORE)
1.197     schwarze  654:                print_endline(h);
                    655:        if (h->col == 0)
                    656:                print_indent(h);
1.196     schwarze  657:        else if ((h->flags & HTML_NOSPACE) == 0) {
                    658:                if (h->flags & HTML_KEEP)
1.216     schwarze  659:                        print_word(h, "&#x00A0;");
1.196     schwarze  660:                else {
                    661:                        if (h->flags & HTML_PREKEEP)
                    662:                                h->flags |= HTML_KEEP;
1.197     schwarze  663:                        print_endword(h);
1.105     kristaps  664:                }
1.196     schwarze  665:        }
1.29      kristaps  666:
1.109     kristaps  667:        if ( ! (h->flags & HTML_NONOSPACE))
                    668:                h->flags &= ~HTML_NOSPACE;
1.110     kristaps  669:        else
                    670:                h->flags |= HTML_NOSPACE;
1.109     kristaps  671:
1.94      kristaps  672:        /* Print out the tag name and attributes. */
                    673:
1.197     schwarze  674:        print_byte(h, '<');
                    675:        print_word(h, htmltags[tag].name);
1.194     schwarze  676:
                    677:        va_start(ap, fmt);
                    678:
1.244     schwarze  679:        while (*fmt != '\0' && *fmt != 's') {
1.203     schwarze  680:
1.238     schwarze  681:                /* Parse attributes and arguments. */
1.203     schwarze  682:
                    683:                arg1 = va_arg(ap, char *);
1.238     schwarze  684:                arg2 = NULL;
1.194     schwarze  685:                switch (*fmt++) {
                    686:                case 'c':
1.195     schwarze  687:                        attr = "class";
1.194     schwarze  688:                        break;
                    689:                case 'h':
1.195     schwarze  690:                        attr = "href";
1.194     schwarze  691:                        break;
                    692:                case 'i':
1.195     schwarze  693:                        attr = "id";
1.194     schwarze  694:                        break;
                    695:                case '?':
1.203     schwarze  696:                        attr = arg1;
                    697:                        arg1 = va_arg(ap, char *);
1.194     schwarze  698:                        break;
                    699:                default:
                    700:                        abort();
                    701:                }
1.203     schwarze  702:                if (*fmt == 'M')
                    703:                        arg2 = va_arg(ap, char *);
                    704:                if (arg1 == NULL)
                    705:                        continue;
                    706:
1.238     schwarze  707:                /* Print the attributes. */
1.203     schwarze  708:
1.197     schwarze  709:                print_byte(h, ' ');
                    710:                print_word(h, attr);
                    711:                print_byte(h, '=');
                    712:                print_byte(h, '"');
1.195     schwarze  713:                switch (*fmt) {
1.208     schwarze  714:                case 'I':
                    715:                        print_href(h, arg1, NULL, 0);
                    716:                        fmt++;
                    717:                        break;
1.195     schwarze  718:                case 'M':
1.203     schwarze  719:                        print_href(h, arg1, arg2, 1);
1.195     schwarze  720:                        fmt++;
                    721:                        break;
1.208     schwarze  722:                case 'R':
                    723:                        print_byte(h, '#');
                    724:                        print_encode(h, arg1, NULL, 1);
1.195     schwarze  725:                        fmt++;
1.208     schwarze  726:                        break;
1.195     schwarze  727:                default:
1.244     schwarze  728:                        print_encode(h, arg1, NULL, 1);
1.195     schwarze  729:                        break;
                    730:                }
1.197     schwarze  731:                print_byte(h, '"');
1.194     schwarze  732:        }
1.244     schwarze  733:
                    734:        style_written = 0;
                    735:        while (*fmt++ == 's') {
                    736:                arg1 = va_arg(ap, char *);
                    737:                arg2 = va_arg(ap, char *);
                    738:                if (arg2 == NULL)
                    739:                        continue;
                    740:                print_byte(h, ' ');
                    741:                if (style_written == 0) {
                    742:                        print_word(h, "style=\"");
                    743:                        style_written = 1;
                    744:                }
                    745:                print_word(h, arg1);
                    746:                print_byte(h, ':');
                    747:                print_byte(h, ' ');
                    748:                print_word(h, arg2);
                    749:                print_byte(h, ';');
                    750:        }
                    751:        if (style_written)
                    752:                print_byte(h, '"');
                    753:
1.194     schwarze  754:        va_end(ap);
1.94      kristaps  755:
1.172     kristaps  756:        /* Accommodate for "well-formed" singleton escaping. */
1.94      kristaps  757:
1.257     schwarze  758:        if (htmltags[tag].flags & HTML_NOSTACK)
1.197     schwarze  759:                print_byte(h, '/');
1.93      kristaps  760:
1.197     schwarze  761:        print_byte(h, '>');
1.14      kristaps  762:
1.196     schwarze  763:        if (tflags & HTML_NLBEGIN)
1.197     schwarze  764:                print_endline(h);
1.196     schwarze  765:        else
                    766:                h->flags |= HTML_NOSPACE;
1.117     kristaps  767:
1.196     schwarze  768:        if (tflags & HTML_INDENT)
                    769:                h->indent++;
                    770:        if (tflags & HTML_NOINDENT)
                    771:                h->noindent++;
1.117     kristaps  772:
1.188     schwarze  773:        return t;
1.264     schwarze  774: }
                    775:
                    776: /*
                    777:  * Print an element with an optional "id=" attribute.
1.265     schwarze  778:  * If the element has phrasing content and an "id=" attribute,
                    779:  * also add a permalink: outside if it can be in phrasing context,
                    780:  * inside otherwise.
1.264     schwarze  781:  */
                    782: struct tag *
                    783: print_otag_id(struct html *h, enum htmltag elemtype, const char *cattr,
                    784:     struct roff_node *n)
                    785: {
1.265     schwarze  786:        struct roff_node *nch;
1.264     schwarze  787:        struct tag      *ret, *t;
1.266     schwarze  788:        char            *id, *href;
1.264     schwarze  789:
                    790:        ret = NULL;
1.266     schwarze  791:        id = href = NULL;
1.264     schwarze  792:        if (n->flags & NODE_ID)
                    793:                id = html_make_id(n, 1);
1.266     schwarze  794:        if (n->flags & NODE_HREF)
1.269     schwarze  795:                href = id == NULL ? html_make_id(n, 2) : id;
1.266     schwarze  796:        if (href != NULL && htmltags[elemtype].flags & HTML_INPHRASE)
                    797:                ret = print_otag(h, TAG_A, "chR", "permalink", href);
1.264     schwarze  798:        t = print_otag(h, elemtype, "ci", cattr, id);
                    799:        if (ret == NULL) {
                    800:                ret = t;
1.266     schwarze  801:                if (href != NULL && (nch = n->child) != NULL) {
1.265     schwarze  802:                        /* man(7) is safe, it tags phrasing content only. */
                    803:                        if (n->tok > MDOC_MAX ||
                    804:                            htmltags[elemtype].flags & HTML_TOPHRASE)
                    805:                                nch = NULL;
                    806:                        else  /* For mdoc(7), beware of nested blocks. */
                    807:                                while (nch != NULL && nch->type == ROFFT_TEXT)
                    808:                                        nch = nch->next;
                    809:                        if (nch == NULL)
1.266     schwarze  810:                                print_otag(h, TAG_A, "chR", "permalink", href);
1.265     schwarze  811:                }
1.264     schwarze  812:        }
1.269     schwarze  813:        free(id);
1.266     schwarze  814:        if (id == NULL)
                    815:                free(href);
1.264     schwarze  816:        return ret;
1.14      kristaps  817: }
                    818:
1.29      kristaps  819: static void
1.184     schwarze  820: print_ctag(struct html *h, struct tag *tag)
1.14      kristaps  821: {
1.196     schwarze  822:        int      tflags;
1.156     schwarze  823:
1.252     schwarze  824:        if (tag->closed == 0) {
                    825:                tag->closed = 1;
                    826:                if (tag == h->metaf)
                    827:                        h->metaf = NULL;
                    828:                if (tag == h->tblt)
                    829:                        h->tblt = NULL;
                    830:
                    831:                tflags = htmltags[tag->tag].flags;
                    832:                if (tflags & HTML_INDENT)
                    833:                        h->indent--;
                    834:                if (tflags & HTML_NOINDENT)
                    835:                        h->noindent--;
                    836:                if (tflags & HTML_NLEND)
                    837:                        print_endline(h);
                    838:                print_indent(h);
                    839:                print_byte(h, '<');
                    840:                print_byte(h, '/');
                    841:                print_word(h, htmltags[tag->tag].name);
                    842:                print_byte(h, '>');
                    843:                if (tflags & HTML_NLAFTER)
                    844:                        print_endline(h);
                    845:        }
                    846:        if (tag->refcnt == 0) {
                    847:                h->tag = tag->next;
                    848:                free(tag);
                    849:        }
1.14      kristaps  850: }
                    851:
1.51      kristaps  852: void
1.93      kristaps  853: print_gen_decls(struct html *h)
1.1       kristaps  854: {
1.197     schwarze  855:        print_word(h, "<!DOCTYPE html>");
                    856:        print_endline(h);
1.221     schwarze  857: }
                    858:
                    859: void
                    860: print_gen_comment(struct html *h, struct roff_node *n)
                    861: {
                    862:        int      wantblank;
                    863:
                    864:        print_word(h, "<!-- This is an automatically generated file."
                    865:            "  Do not edit.");
                    866:        h->indent = 1;
                    867:        wantblank = 0;
                    868:        while (n != NULL && n->type == ROFFT_COMMENT) {
                    869:                if (strstr(n->string, "-->") == NULL &&
                    870:                    (wantblank || *n->string != '\0')) {
                    871:                        print_endline(h);
                    872:                        print_indent(h);
                    873:                        print_word(h, n->string);
                    874:                        wantblank = *n->string != '\0';
                    875:                }
                    876:                n = n->next;
                    877:        }
                    878:        if (wantblank)
                    879:                print_endline(h);
                    880:        print_word(h, " -->");
                    881:        print_endline(h);
                    882:        h->indent = 0;
1.1       kristaps  883: }
                    884:
1.51      kristaps  885: void
1.104     kristaps  886: print_text(struct html *h, const char *word)
1.1       kristaps  887: {
1.268     schwarze  888:        print_tagged_text(h, word, NULL);
                    889: }
                    890:
                    891: void
                    892: print_tagged_text(struct html *h, const char *word, struct roff_node *n)
                    893: {
                    894:        struct tag      *t;
                    895:        char            *href;
                    896:
1.260     schwarze  897:        /*
                    898:         * Always wrap text in a paragraph unless already contained in
                    899:         * some flow container; never put it directly into a section.
                    900:         */
                    901:
                    902:        if (h->tag->tag == TAG_SECTION)
                    903:                print_otag(h, TAG_P, "c", "Pp");
                    904:
                    905:        /* Output whitespace before this text? */
                    906:
1.197     schwarze  907:        if (h->col && (h->flags & HTML_NOSPACE) == 0) {
1.105     kristaps  908:                if ( ! (HTML_KEEP & h->flags)) {
                    909:                        if (HTML_PREKEEP & h->flags)
                    910:                                h->flags |= HTML_KEEP;
1.197     schwarze  911:                        print_endword(h);
1.105     kristaps  912:                } else
1.216     schwarze  913:                        print_word(h, "&#x00A0;");
1.105     kristaps  914:        }
1.260     schwarze  915:
                    916:        /*
1.268     schwarze  917:         * Optionally switch fonts, optionally write a permalink, then
                    918:         * print the text, optionally surrounded by HTML whitespace.
1.260     schwarze  919:         */
1.30      kristaps  920:
1.255     schwarze  921:        assert(h->metaf == NULL);
                    922:        print_metaf(h);
                    923:        print_indent(h);
1.268     schwarze  924:
1.269     schwarze  925:        if (n != NULL && (href = html_make_id(n, 2)) != NULL) {
1.268     schwarze  926:                t = print_otag(h, TAG_A, "chR", "permalink", href);
                    927:                free(href);
                    928:        } else
                    929:                t = NULL;
                    930:
1.195     schwarze  931:        if ( ! print_encode(h, word, NULL, 0)) {
1.109     kristaps  932:                if ( ! (h->flags & HTML_NONOSPACE))
                    933:                        h->flags &= ~HTML_NOSPACE;
1.183     schwarze  934:                h->flags &= ~HTML_NONEWLINE;
1.149     kristaps  935:        } else
1.183     schwarze  936:                h->flags |= HTML_NOSPACE | HTML_NONEWLINE;
1.122     kristaps  937:
1.255     schwarze  938:        if (h->metaf != NULL) {
1.122     kristaps  939:                print_tagq(h, h->metaf);
                    940:                h->metaf = NULL;
1.268     schwarze  941:        } else if (t != NULL)
                    942:                print_tagq(h, t);
1.113     schwarze  943:
                    944:        h->flags &= ~HTML_IGNDELIM;
1.1       kristaps  945: }
1.30      kristaps  946:
1.51      kristaps  947: void
1.30      kristaps  948: print_tagq(struct html *h, const struct tag *until)
                    949: {
1.252     schwarze  950:        struct tag      *this, *next;
1.30      kristaps  951:
1.252     schwarze  952:        for (this = h->tag; this != NULL; this = next) {
                    953:                next = this == until ? NULL : this->next;
                    954:                print_ctag(h, this);
1.30      kristaps  955:        }
                    956: }
                    957:
1.250     schwarze  958: /*
                    959:  * Close out all open elements up to but excluding suntil.
                    960:  * Note that a paragraph just inside stays open together with it
                    961:  * because paragraphs include subsequent phrasing content.
                    962:  */
1.51      kristaps  963: void
1.30      kristaps  964: print_stagq(struct html *h, const struct tag *suntil)
                    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->next;
                    970:                if (this == suntil || (next == suntil &&
                    971:                    (this->tag == TAG_P || this->tag == TAG_PRE)))
                    972:                        break;
                    973:                print_ctag(h, this);
1.30      kristaps  974:        }
1.171     kristaps  975: }
                    976:
1.197     schwarze  977:
                    978: /***********************************************************************
                    979:  * Low level output functions.
                    980:  * They implement line breaking using a short static buffer.
                    981:  ***********************************************************************/
                    982:
                    983: /*
                    984:  * Buffer one HTML output byte.
                    985:  * If the buffer is full, flush and deactivate it and start a new line.
                    986:  * If the buffer is inactive, print directly.
                    987:  */
                    988: static void
                    989: print_byte(struct html *h, char c)
                    990: {
                    991:        if ((h->flags & HTML_BUFFER) == 0) {
                    992:                putchar(c);
                    993:                h->col++;
                    994:                return;
                    995:        }
                    996:
                    997:        if (h->col + h->bufcol < sizeof(h->buf)) {
                    998:                h->buf[h->bufcol++] = c;
                    999:                return;
                   1000:        }
                   1001:
                   1002:        putchar('\n');
                   1003:        h->col = 0;
                   1004:        print_indent(h);
                   1005:        putchar(' ');
                   1006:        putchar(' ');
                   1007:        fwrite(h->buf, h->bufcol, 1, stdout);
                   1008:        putchar(c);
                   1009:        h->col = (h->indent + 1) * 2 + h->bufcol + 1;
                   1010:        h->bufcol = 0;
                   1011:        h->flags &= ~HTML_BUFFER;
                   1012: }
                   1013:
1.196     schwarze 1014: /*
                   1015:  * If something was printed on the current output line, end it.
1.197     schwarze 1016:  * Not to be called right after print_indent().
1.196     schwarze 1017:  */
1.202     schwarze 1018: void
1.197     schwarze 1019: print_endline(struct html *h)
1.196     schwarze 1020: {
1.197     schwarze 1021:        if (h->col == 0)
1.196     schwarze 1022:                return;
                   1023:
1.197     schwarze 1024:        if (h->bufcol) {
                   1025:                putchar(' ');
                   1026:                fwrite(h->buf, h->bufcol, 1, stdout);
                   1027:                h->bufcol = 0;
                   1028:        }
1.196     schwarze 1029:        putchar('\n');
1.197     schwarze 1030:        h->col = 0;
                   1031:        h->flags |= HTML_NOSPACE;
                   1032:        h->flags &= ~HTML_BUFFER;
                   1033: }
                   1034:
                   1035: /*
                   1036:  * Flush the HTML output buffer.
                   1037:  * If it is inactive, activate it.
                   1038:  */
                   1039: static void
                   1040: print_endword(struct html *h)
                   1041: {
                   1042:        if (h->noindent) {
                   1043:                print_byte(h, ' ');
                   1044:                return;
                   1045:        }
                   1046:
                   1047:        if ((h->flags & HTML_BUFFER) == 0) {
                   1048:                h->col++;
                   1049:                h->flags |= HTML_BUFFER;
                   1050:        } else if (h->bufcol) {
                   1051:                putchar(' ');
                   1052:                fwrite(h->buf, h->bufcol, 1, stdout);
                   1053:                h->col += h->bufcol + 1;
                   1054:        }
                   1055:        h->bufcol = 0;
1.196     schwarze 1056: }
                   1057:
                   1058: /*
                   1059:  * If at the beginning of a new output line,
                   1060:  * perform indentation and mark the line as containing output.
                   1061:  * Make sure to really produce some output right afterwards,
                   1062:  * but do not use print_otag() for producing it.
                   1063:  */
                   1064: static void
1.197     schwarze 1065: print_indent(struct html *h)
1.196     schwarze 1066: {
1.197     schwarze 1067:        size_t   i;
1.196     schwarze 1068:
1.261     schwarze 1069:        if (h->col || h->noindent)
1.196     schwarze 1070:                return;
                   1071:
1.261     schwarze 1072:        h->col = h->indent * 2;
                   1073:        for (i = 0; i < h->col; i++)
                   1074:                putchar(' ');
1.197     schwarze 1075: }
                   1076:
                   1077: /*
                   1078:  * Print or buffer some characters
                   1079:  * depending on the current HTML output buffer state.
                   1080:  */
                   1081: static void
                   1082: print_word(struct html *h, const char *cp)
                   1083: {
                   1084:        while (*cp != '\0')
                   1085:                print_byte(h, *cp++);
1.68      kristaps 1086: }

CVSweb