=================================================================== RCS file: /cvs/mandoc/html.c,v retrieving revision 1.3 retrieving revision 1.227 diff -u -p -r1.3 -r1.227 --- mandoc/html.c 2008/12/03 21:27:56 1.3 +++ mandoc/html.c 2018/05/21 00:30:23 1.227 @@ -1,393 +1,1023 @@ -/* $Id: html.c,v 1.3 2008/12/03 21:27:56 kristaps Exp $ */ +/* $Id: html.c,v 1.227 2018/05/21 00:30:23 schwarze Exp $ */ /* - * Copyright (c) 2008 Kristaps Dzonsons + * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons + * Copyright (c) 2011-2015, 2017, 2018 Ingo Schwarze * * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the - * above copyright notice and this permission notice appear in all - * copies. + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL - * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE - * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL - * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR - * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER - * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR - * PERFORMANCE OF THIS SOFTWARE. + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ +#include "config.h" + +#include + #include +#include +#include +#include +#include #include #include +#include -#include "libmdocml.h" -#include "private.h" -#include "ml.h" +#include "mandoc_aux.h" +#include "mandoc.h" +#include "roff.h" +#include "out.h" +#include "html.h" +#include "manconf.h" +#include "main.h" +struct htmldata { + const char *name; + int flags; +#define HTML_NOSTACK (1 << 0) +#define HTML_AUTOCLOSE (1 << 1) +#define HTML_NLBEFORE (1 << 2) +#define HTML_NLBEGIN (1 << 3) +#define HTML_NLEND (1 << 4) +#define HTML_NLAFTER (1 << 5) +#define HTML_NLAROUND (HTML_NLBEFORE | HTML_NLAFTER) +#define HTML_NLINSIDE (HTML_NLBEGIN | HTML_NLEND) +#define HTML_NLALL (HTML_NLAROUND | HTML_NLINSIDE) +#define HTML_INDENT (1 << 6) +#define HTML_NOINDENT (1 << 7) +}; -static ssize_t html_endtag(struct md_mbuf *, - const struct md_args *, - enum md_ns, int); -static ssize_t html_begintag(struct md_mbuf *, - const struct md_args *, - enum md_ns, int, - const int *, const char **); -static int html_begin(struct md_mbuf *, - const struct md_args *); -static int html_end(struct md_mbuf *, - const struct md_args *); -static ssize_t html_blocktagname(struct md_mbuf *, - const struct md_args *, int); -static ssize_t html_blocktagargs(struct md_mbuf *, - const struct md_args *, int, - const int *, const char **); -static ssize_t html_blockheadtagname(struct md_mbuf *, - const struct md_args *, int); -static ssize_t html_blockheadtagargs(struct md_mbuf *, - const struct md_args *, int, - const int *, const char **); -static ssize_t html_blockbodytagname(struct md_mbuf *, - const struct md_args *, int); -static ssize_t html_blockbodytagargs(struct md_mbuf *, - const struct md_args *, int, - const int *, const char **); -static ssize_t html_inlinetagname(struct md_mbuf *, - const struct md_args *, int); -static ssize_t html_inlinetagargs(struct md_mbuf *, - const struct md_args *, int, - const int *, const char **); +static const struct htmldata htmltags[TAG_MAX] = { + {"html", HTML_NLALL}, + {"head", HTML_NLALL | HTML_INDENT}, + {"body", HTML_NLALL}, + {"meta", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL}, + {"title", HTML_NLAROUND}, + {"div", HTML_NLAROUND}, + {"div", 0}, + {"h1", HTML_NLAROUND}, + {"h2", HTML_NLAROUND}, + {"span", 0}, + {"link", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL}, + {"br", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL}, + {"a", 0}, + {"table", HTML_NLALL | HTML_INDENT}, + {"colgroup", HTML_NLALL | HTML_INDENT}, + {"col", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL}, + {"tr", HTML_NLALL | HTML_INDENT}, + {"td", HTML_NLAROUND}, + {"li", HTML_NLAROUND | HTML_INDENT}, + {"ul", HTML_NLALL | HTML_INDENT}, + {"ol", HTML_NLALL | HTML_INDENT}, + {"dl", HTML_NLALL | HTML_INDENT}, + {"dt", HTML_NLAROUND}, + {"dd", HTML_NLAROUND | HTML_INDENT}, + {"pre", HTML_NLALL | HTML_NOINDENT}, + {"var", 0}, + {"cite", 0}, + {"b", 0}, + {"i", 0}, + {"code", 0}, + {"small", 0}, + {"style", HTML_NLALL | HTML_INDENT}, + {"math", HTML_NLALL | HTML_INDENT}, + {"mrow", 0}, + {"mi", 0}, + {"mn", 0}, + {"mo", 0}, + {"msup", 0}, + {"msub", 0}, + {"msubsup", 0}, + {"mfrac", 0}, + {"msqrt", 0}, + {"mfenced", 0}, + {"mtable", 0}, + {"mtr", 0}, + {"mtd", 0}, + {"munderover", 0}, + {"munder", 0}, + {"mover", 0}, +}; +static const char *const roffscales[SCALE_MAX] = { + "cm", /* SCALE_CM */ + "in", /* SCALE_IN */ + "pc", /* SCALE_PC */ + "pt", /* SCALE_PT */ + "em", /* SCALE_EM */ + "em", /* SCALE_MM */ + "ex", /* SCALE_EN */ + "ex", /* SCALE_BU */ + "em", /* SCALE_VS */ + "ex", /* SCALE_FS */ +}; -/* ARGSUSED */ -static int -html_begin(struct md_mbuf *mbuf, const struct md_args *args) -{ - size_t res; +static void a2width(const char *, struct roffsu *); +static void print_byte(struct html *, char); +static void print_endword(struct html *); +static void print_indent(struct html *); +static void print_word(struct html *, const char *); - res = 0; - if ( ! ml_puts(mbuf, "\n", &res)) - return(0); - if ( ! ml_puts(mbuf, "\n", &res)) - return(0); - if ( ! ml_puts(mbuf, "\n", &res)) - return(0); - if ( ! ml_puts(mbuf, " Manual page\n", &res)) - return(0); - if ( ! ml_puts(mbuf, " \n", &res)) - return(0); - if ( ! ml_puts(mbuf, " \n", &res)) - return(0); - if ( ! ml_puts(mbuf, "\n", &res)) - return(0); - if ( ! ml_puts(mbuf, "", &res)) - return(0); +static void print_ctag(struct html *, struct tag *); +static int print_escape(struct html *, char); +static int print_encode(struct html *, const char *, const char *, int); +static void print_href(struct html *, const char *, const char *, int); +static void print_metaf(struct html *, enum mandoc_esc); - return(1); -} - -/* ARGSUSED */ -static int -html_end(struct md_mbuf *mbuf, const struct md_args *args) +void * +html_alloc(const struct manoutput *outopts) { - size_t res; + struct html *h; - res = 0; - if ( ! ml_puts(mbuf, "\n", &res)) - return(0); + h = mandoc_calloc(1, sizeof(struct html)); - return(1); + h->tag = NULL; + h->style = outopts->style; + h->base_man = outopts->man; + h->base_includes = outopts->includes; + if (outopts->fragment) + h->oflags |= HTML_FRAGMENT; + + return h; } - -/* ARGSUSED */ -static ssize_t -html_blockbodytagname(struct md_mbuf *mbuf, - const struct md_args *args, int tok) +void +html_free(void *p) { - size_t res; + struct tag *tag; + struct html *h; - res = 0; + h = (struct html *)p; - switch (tok) { - case (ROFF_Sh): - if ( ! ml_puts(mbuf, "blockquote", &res)) - return(-1); - break; - default: - if ( ! ml_puts(mbuf, "div", &res)) - return(-1); - break; + while ((tag = h->tag) != NULL) { + h->tag = tag->next; + free(tag); } - return((ssize_t)res); + free(h); } +void +print_gen_head(struct html *h) +{ + struct tag *t; + print_otag(h, TAG_META, "?", "charset", "utf-8"); + if (h->style != NULL) { + print_otag(h, TAG_LINK, "?h??", "rel", "stylesheet", + h->style, "type", "text/css", "media", "all"); + return; + } + /* + * Print a minimal embedded style sheet. + */ -/* ARGSUSED */ -static ssize_t -html_blockheadtagname(struct md_mbuf *mbuf, - const struct md_args *args, int tok) + t = print_otag(h, TAG_STYLE, ""); + print_text(h, "table.head, table.foot { width: 100%; }"); + print_endline(h); + print_text(h, "td.head-rtitle, td.foot-os { text-align: right; }"); + print_endline(h); + print_text(h, "td.head-vol { text-align: center; }"); + print_endline(h); + print_text(h, "div.Pp { margin: 1ex 0ex; }"); + print_endline(h); + print_text(h, "div.Nd, div.Bf, div.Op { display: inline; }"); + print_endline(h); + print_text(h, "span.Pa, span.Ad { font-style: italic; }"); + print_endline(h); + print_text(h, "dl.Bl-diag "); + print_byte(h, '>'); + print_text(h, " dt { font-weight: bold; }"); + print_endline(h); + print_text(h, "code.Nm, code.Fl, code.Cm, code.Ic, " + "code.In, code.Fd, code.Fn,"); + print_endline(h); + print_text(h, "code.Cd { font-weight: bold; " + "font-family: inherit; }"); + print_tagq(h, t); +} + +static void +print_metaf(struct html *h, enum mandoc_esc deco) { - size_t res; + enum htmlfont font; - res = 0; + switch (deco) { + case ESCAPE_FONTPREV: + font = h->metal; + break; + case ESCAPE_FONTITALIC: + font = HTMLFONT_ITALIC; + break; + case ESCAPE_FONTBOLD: + font = HTMLFONT_BOLD; + break; + case ESCAPE_FONTBI: + font = HTMLFONT_BI; + break; + case ESCAPE_FONT: + case ESCAPE_FONTROMAN: + font = HTMLFONT_NONE; + break; + default: + abort(); + } - switch (tok) { - case (ROFF_Sh): - if ( ! ml_puts(mbuf, "h1", &res)) - return(-1); + if (h->metaf) { + print_tagq(h, h->metaf); + h->metaf = NULL; + } + + h->metal = h->metac; + h->metac = font; + + switch (font) { + case HTMLFONT_ITALIC: + h->metaf = print_otag(h, TAG_I, ""); break; - case (ROFF_Ss): - if ( ! ml_puts(mbuf, "h2", &res)) - return(-1); + case HTMLFONT_BOLD: + h->metaf = print_otag(h, TAG_B, ""); break; + case HTMLFONT_BI: + h->metaf = print_otag(h, TAG_B, ""); + print_otag(h, TAG_I, ""); + break; default: - if ( ! ml_puts(mbuf, "div", &res)) - return(-1); break; } - - return((ssize_t)res); } +char * +html_make_id(const struct roff_node *n) +{ + const struct roff_node *nch; + char *buf, *cp; -/* ARGSUSED */ -static ssize_t -html_blocktagname(struct md_mbuf *mbuf, - const struct md_args *args, int tok) + for (nch = n->child; nch != NULL; nch = nch->next) + if (nch->type != ROFFT_TEXT) + return NULL; + + buf = NULL; + deroff(&buf, n); + if (buf == NULL) + return NULL; + + /* http://www.w3.org/TR/html5/dom.html#the-id-attribute */ + + for (cp = buf; *cp != '\0'; cp++) + if (*cp == ' ') + *cp = '_'; + + return buf; +} + +int +html_strlen(const char *cp) { - size_t res; + size_t rsz; + int skip, sz; - res = 0; + /* + * Account for escaped sequences within string length + * calculations. This follows the logic in term_strlen() as we + * must calculate the width of produced strings. + * Assume that characters are always width of "1". This is + * hacky, but it gets the job done for approximation of widths. + */ - switch (tok) { - case (ROFF_Bd): - if ( ! ml_puts(mbuf, "pre", &res)) - return(-1); + sz = 0; + skip = 0; + while (1) { + rsz = strcspn(cp, "\\"); + if (rsz) { + cp += rsz; + if (skip) { + skip = 0; + rsz--; + } + sz += rsz; + } + if ('\0' == *cp) + break; + cp++; + switch (mandoc_escape(&cp, NULL, NULL)) { + case ESCAPE_ERROR: + return sz; + case ESCAPE_UNICODE: + case ESCAPE_NUMBERED: + case ESCAPE_SPECIAL: + case ESCAPE_OVERSTRIKE: + if (skip) + skip = 0; + else + sz++; + break; + case ESCAPE_SKIPCHAR: + skip = 1; + break; + default: + break; + } + } + return sz; +} + +static int +print_escape(struct html *h, char c) +{ + + switch (c) { + case '<': + print_word(h, "<"); break; - case (ROFF_Bl): - if ( ! ml_puts(mbuf, "ul", &res)) - return(-1); + case '>': + print_word(h, ">"); break; - case (ROFF_It): - if ( ! ml_puts(mbuf, "li", &res)) - return(-1); + case '&': + print_word(h, "&"); break; - default: - if ( ! ml_puts(mbuf, "div", &res)) - return(-1); + case '"': + print_word(h, """); break; + case ASCII_NBRSP: + print_word(h, " "); + break; + case ASCII_HYPH: + print_byte(h, '-'); + break; + case ASCII_BREAK: + break; + default: + return 0; } - - return((ssize_t)res); + return 1; } - -/* ARGSUSED */ -static ssize_t -html_blockheadtagargs(struct md_mbuf *mbuf, const struct md_args *args, - int tok, const int *argc, const char **argv) +static int +print_encode(struct html *h, const char *p, const char *pend, int norecurse) { - size_t res; + char numbuf[16]; + struct tag *t; + const char *seq; + size_t sz; + int c, len, breakline, nospace; + enum mandoc_esc esc; + static const char rejs[10] = { ' ', '\\', '<', '>', '&', '"', + ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' }; - res = 0; + if (pend == NULL) + pend = strchr(p, '\0'); - if ( ! ml_puts(mbuf, " class=\"head:", &res)) - return(0); - if ( ! ml_puts(mbuf, toknames[tok], &res)) - return(0); - if ( ! ml_puts(mbuf, "\"", &res)) - return(0); + breakline = 0; + nospace = 0; - switch (tok) { - default: - break; + while (p < pend) { + if (HTML_SKIPCHAR & h->flags && '\\' != *p) { + h->flags &= ~HTML_SKIPCHAR; + p++; + continue; + } + + for (sz = strcspn(p, rejs); sz-- && p < pend; p++) + print_byte(h, *p); + + if (breakline && + (p >= pend || *p == ' ' || *p == ASCII_NBRSP)) { + t = print_otag(h, TAG_DIV, ""); + print_text(h, "\\~"); + print_tagq(h, t); + breakline = 0; + while (p < pend && (*p == ' ' || *p == ASCII_NBRSP)) + p++; + continue; + } + + if (p >= pend) + break; + + if (*p == ' ') { + print_endword(h); + p++; + continue; + } + + if (print_escape(h, *p++)) + continue; + + esc = mandoc_escape(&p, &seq, &len); + if (ESCAPE_ERROR == esc) + break; + + switch (esc) { + case ESCAPE_FONT: + case ESCAPE_FONTPREV: + case ESCAPE_FONTBOLD: + case ESCAPE_FONTITALIC: + case ESCAPE_FONTBI: + case ESCAPE_FONTROMAN: + if (0 == norecurse) + print_metaf(h, esc); + continue; + case ESCAPE_SKIPCHAR: + h->flags |= HTML_SKIPCHAR; + continue; + default: + break; + } + + if (h->flags & HTML_SKIPCHAR) { + h->flags &= ~HTML_SKIPCHAR; + continue; + } + + switch (esc) { + case ESCAPE_UNICODE: + /* Skip past "u" header. */ + c = mchars_num2uc(seq + 1, len - 1); + break; + case ESCAPE_NUMBERED: + c = mchars_num2char(seq, len); + if (c < 0) + continue; + break; + case ESCAPE_SPECIAL: + c = mchars_spec2cp(seq, len); + if (c <= 0) + continue; + break; + case ESCAPE_BREAK: + breakline = 1; + continue; + case ESCAPE_NOSPACE: + if ('\0' == *p) + nospace = 1; + continue; + case ESCAPE_OVERSTRIKE: + if (len == 0) + continue; + c = seq[len - 1]; + break; + default: + continue; + } + if ((c < 0x20 && c != 0x09) || + (c > 0x7E && c < 0xA0)) + c = 0xFFFD; + if (c > 0x7E) { + (void)snprintf(numbuf, sizeof(numbuf), "&#x%.4X;", c); + print_word(h, numbuf); + } else if (print_escape(h, c) == 0) + print_byte(h, c); } - return(0); + return nospace; } +static void +print_href(struct html *h, const char *name, const char *sec, int man) +{ + const char *p, *pp; -/* ARGSUSED */ -static ssize_t -html_blockbodytagargs(struct md_mbuf *mbuf, const struct md_args *args, - int tok, const int *argc, const char **argv) + pp = man ? h->base_man : h->base_includes; + while ((p = strchr(pp, '%')) != NULL) { + print_encode(h, pp, p, 1); + if (man && p[1] == 'S') { + if (sec == NULL) + print_byte(h, '1'); + else + print_encode(h, sec, NULL, 1); + } else if ((man && p[1] == 'N') || + (man == 0 && p[1] == 'I')) + print_encode(h, name, NULL, 1); + else + print_encode(h, p, p + 2, 1); + pp = p + 2; + } + if (*pp != '\0') + print_encode(h, pp, NULL, 1); +} + +struct tag * +print_otag(struct html *h, enum htmltag tag, const char *fmt, ...) { - size_t res; + va_list ap; + struct roffsu mysu, *su; + char numbuf[16]; + struct tag *t; + const char *attr; + char *arg1, *arg2; + double v; + int i, have_style, tflags; - res = 0; + tflags = htmltags[tag].flags; - if ( ! ml_puts(mbuf, " class=\"body:", &res)) - return(0); - if ( ! ml_puts(mbuf, toknames[tok], &res)) - return(0); - if ( ! ml_puts(mbuf, "\"", &res)) - return(0); + /* Push this tag onto the stack of open scopes. */ - switch (tok) { - default: - break; + if ((tflags & HTML_NOSTACK) == 0) { + t = mandoc_malloc(sizeof(struct tag)); + t->tag = tag; + t->next = h->tag; + h->tag = t; + } else + t = NULL; + + if (tflags & HTML_NLBEFORE) + print_endline(h); + if (h->col == 0) + print_indent(h); + else if ((h->flags & HTML_NOSPACE) == 0) { + if (h->flags & HTML_KEEP) + print_word(h, " "); + else { + if (h->flags & HTML_PREKEEP) + h->flags |= HTML_KEEP; + print_endword(h); + } } - return(res); -} + if ( ! (h->flags & HTML_NONOSPACE)) + h->flags &= ~HTML_NOSPACE; + else + h->flags |= HTML_NOSPACE; + /* Print out the tag name and attributes. */ -/* ARGSUSED */ -static ssize_t -html_blocktagargs(struct md_mbuf *mbuf, const struct md_args *args, - int tok, const int *argc, const char **argv) -{ - size_t res; + print_byte(h, '<'); + print_word(h, htmltags[tag].name); - res = 0; + va_start(ap, fmt); - if ( ! ml_puts(mbuf, " class=\"block:", &res)) - return(0); - if ( ! ml_puts(mbuf, toknames[tok], &res)) - return(0); - if ( ! ml_puts(mbuf, "\"", &res)) - return(0); + have_style = 0; + while (*fmt != '\0') { + if (*fmt == 's') { + have_style = 1; + fmt++; + break; + } - switch (tok) { - default: - break; + /* Parse a non-style attribute and its arguments. */ + + arg1 = va_arg(ap, char *); + switch (*fmt++) { + case 'c': + attr = "class"; + break; + case 'h': + attr = "href"; + break; + case 'i': + attr = "id"; + break; + case '?': + attr = arg1; + arg1 = va_arg(ap, char *); + break; + default: + abort(); + } + arg2 = NULL; + if (*fmt == 'M') + arg2 = va_arg(ap, char *); + if (arg1 == NULL) + continue; + + /* Print the non-style attributes. */ + + print_byte(h, ' '); + print_word(h, attr); + print_byte(h, '='); + print_byte(h, '"'); + switch (*fmt) { + case 'I': + print_href(h, arg1, NULL, 0); + fmt++; + break; + case 'M': + print_href(h, arg1, arg2, 1); + fmt++; + break; + case 'R': + print_byte(h, '#'); + print_encode(h, arg1, NULL, 1); + fmt++; + break; + case 'T': + print_encode(h, arg1, NULL, 1); + print_word(h, "\" title=\""); + print_encode(h, arg1, NULL, 1); + fmt++; + break; + default: + print_encode(h, arg1, NULL, 1); + break; + } + print_byte(h, '"'); } - return(0); -} + /* Print out styles. */ + while (*fmt != '\0') { + arg1 = NULL; + su = NULL; -/* ARGSUSED */ -static ssize_t -html_inlinetagargs(struct md_mbuf *mbuf, const struct md_args *args, - int tok, const int *argc, const char **argv) -{ - size_t res; + /* First letter: input argument type. */ - res = 0; + switch (*fmt++) { + case 'h': + i = va_arg(ap, int); + su = &mysu; + SCALE_HS_INIT(su, i); + break; + case 's': + arg1 = va_arg(ap, char *); + break; + case 'u': + su = va_arg(ap, struct roffsu *); + break; + case 'w': + if ((arg2 = va_arg(ap, char *)) != NULL) { + su = &mysu; + a2width(arg2, su); + } + if (*fmt == '*') { + if (su != NULL && su->unit == SCALE_EN && + su->scale > 5.9 && su->scale < 6.1) + su = NULL; + fmt++; + } + if (*fmt == '+') { + if (su != NULL) { + /* Make even bold text fit. */ + su->scale *= 1.2; + /* Add padding. */ + su->scale += 3.0; + } + fmt++; + } + if (*fmt == '-') { + if (su != NULL) + su->scale *= -1.0; + fmt++; + } + break; + default: + abort(); + } - if ( ! ml_puts(mbuf, " class=\"inline:", &res)) - return(0); - if ( ! ml_puts(mbuf, toknames[tok], &res)) - return(0); - if ( ! ml_puts(mbuf, "\"", &res)) - return(0); + /* Second letter: style name. */ + switch (*fmt++) { + case 'h': + attr = "height"; + break; + case 'i': + attr = "text-indent"; + break; + case 'l': + attr = "margin-left"; + break; + case 'w': + attr = "width"; + break; + case 'W': + attr = "min-width"; + break; + case '?': + attr = arg1; + arg1 = va_arg(ap, char *); + break; + default: + abort(); + } + if (su == NULL && arg1 == NULL) + continue; - switch (tok) { - default: - break; + if (have_style == 1) + print_word(h, " style=\""); + else + print_byte(h, ' '); + print_word(h, attr); + print_byte(h, ':'); + print_byte(h, ' '); + if (su != NULL) { + v = su->scale; + if (su->unit == SCALE_MM && (v /= 100.0) == 0.0) + v = 1.0; + else if (su->unit == SCALE_BU) + v /= 24.0; + (void)snprintf(numbuf, sizeof(numbuf), "%.2f", v); + print_word(h, numbuf); + print_word(h, roffscales[su->unit]); + } else + print_word(h, arg1); + print_byte(h, ';'); + have_style = 2; } + if (have_style == 2) + print_byte(h, '"'); - return(0); + va_end(ap); + + /* Accommodate for "well-formed" singleton escaping. */ + + if (HTML_AUTOCLOSE & htmltags[tag].flags) + print_byte(h, '/'); + + print_byte(h, '>'); + + if (tflags & HTML_NLBEGIN) + print_endline(h); + else + h->flags |= HTML_NOSPACE; + + if (tflags & HTML_INDENT) + h->indent++; + if (tflags & HTML_NOINDENT) + h->noindent++; + + return t; } +static void +print_ctag(struct html *h, struct tag *tag) +{ + int tflags; -/* ARGSUSED */ -static ssize_t -html_inlinetagname(struct md_mbuf *mbuf, - const struct md_args *args, int tok) + /* + * Remember to close out and nullify the current + * meta-font and table, if applicable. + */ + if (tag == h->metaf) + h->metaf = NULL; + if (tag == h->tblt) + h->tblt = NULL; + + tflags = htmltags[tag->tag].flags; + + if (tflags & HTML_INDENT) + h->indent--; + if (tflags & HTML_NOINDENT) + h->noindent--; + if (tflags & HTML_NLEND) + print_endline(h); + print_indent(h); + print_byte(h, '<'); + print_byte(h, '/'); + print_word(h, htmltags[tag->tag].name); + print_byte(h, '>'); + if (tflags & HTML_NLAFTER) + print_endline(h); + + h->tag = tag->next; + free(tag); +} + +void +print_gen_decls(struct html *h) { - size_t res; + print_word(h, ""); + print_endline(h); +} - res = 0; +void +print_gen_comment(struct html *h, struct roff_node *n) +{ + int wantblank; - switch (tok) { + print_word(h, "") == NULL && + (wantblank || *n->string != '\0')) { + print_endline(h); + print_indent(h); + print_word(h, n->string); + wantblank = *n->string != '\0'; + } + n = n->next; + } + if (wantblank) + print_endline(h); + print_word(h, " -->"); + print_endline(h); + h->indent = 0; +} + +void +print_text(struct html *h, const char *word) +{ + if (h->col && (h->flags & HTML_NOSPACE) == 0) { + if ( ! (HTML_KEEP & h->flags)) { + if (HTML_PREKEEP & h->flags) + h->flags |= HTML_KEEP; + print_endword(h); + } else + print_word(h, " "); + } + + assert(NULL == h->metaf); + switch (h->metac) { + case HTMLFONT_ITALIC: + h->metaf = print_otag(h, TAG_I, ""); + break; + case HTMLFONT_BOLD: + h->metaf = print_otag(h, TAG_B, ""); + break; + case HTMLFONT_BI: + h->metaf = print_otag(h, TAG_B, ""); + print_otag(h, TAG_I, ""); + break; default: - if ( ! ml_puts(mbuf, "span", &res)) - return(-1); + print_indent(h); break; } - return((ssize_t)res); + assert(word); + if ( ! print_encode(h, word, NULL, 0)) { + if ( ! (h->flags & HTML_NONOSPACE)) + h->flags &= ~HTML_NOSPACE; + h->flags &= ~HTML_NONEWLINE; + } else + h->flags |= HTML_NOSPACE | HTML_NONEWLINE; + + if (h->metaf) { + print_tagq(h, h->metaf); + h->metaf = NULL; + } + + h->flags &= ~HTML_IGNDELIM; } +void +print_tagq(struct html *h, const struct tag *until) +{ + struct tag *tag; -static ssize_t -html_begintag(struct md_mbuf *mbuf, const struct md_args *args, - enum md_ns ns, int tok, - const int *argc, const char **argv) + while ((tag = h->tag) != NULL) { + print_ctag(h, tag); + if (until && tag == until) + return; + } +} + +void +print_stagq(struct html *h, const struct tag *suntil) { + struct tag *tag; - assert(ns != MD_NS_DEFAULT); - switch (ns) { - case (MD_NS_BLOCK): - if ( ! html_blocktagname(mbuf, args, tok)) - return(0); - return(html_blocktagargs(mbuf, args, - tok, argc, argv)); - case (MD_NS_BODY): - if ( ! html_blockbodytagname(mbuf, args, tok)) - return(0); - return(html_blockbodytagargs(mbuf, args, - tok, argc, argv)); - case (MD_NS_HEAD): - if ( ! html_blockheadtagname(mbuf, args, tok)) - return(0); - return(html_blockheadtagargs(mbuf, args, - tok, argc, argv)); - default: - break; + while ((tag = h->tag) != NULL) { + if (suntil && tag == suntil) + return; + print_ctag(h, tag); } +} - if ( ! html_inlinetagname(mbuf, args, tok)) - return(0); - return(html_inlinetagargs(mbuf, args, tok, argc, argv)); +void +print_paragraph(struct html *h) +{ + struct tag *t; + + t = print_otag(h, TAG_DIV, "c", "Pp"); + print_tagq(h, t); } -static ssize_t -html_endtag(struct md_mbuf *mbuf, const struct md_args *args, - enum md_ns ns, int tok) +/*********************************************************************** + * Low level output functions. + * They implement line breaking using a short static buffer. + ***********************************************************************/ + +/* + * Buffer one HTML output byte. + * If the buffer is full, flush and deactivate it and start a new line. + * If the buffer is inactive, print directly. + */ +static void +print_byte(struct html *h, char c) { + if ((h->flags & HTML_BUFFER) == 0) { + putchar(c); + h->col++; + return; + } - assert(ns != MD_NS_DEFAULT); - switch (ns) { - case (MD_NS_BLOCK): - return(html_blocktagname(mbuf, args, tok)); - case (MD_NS_BODY): - return(html_blockbodytagname(mbuf, args, tok)); - case (MD_NS_HEAD): - return(html_blockheadtagname(mbuf, args, tok)); - default: - break; + if (h->col + h->bufcol < sizeof(h->buf)) { + h->buf[h->bufcol++] = c; + return; } - return(html_inlinetagname(mbuf, args, tok)); + putchar('\n'); + h->col = 0; + print_indent(h); + putchar(' '); + putchar(' '); + fwrite(h->buf, h->bufcol, 1, stdout); + putchar(c); + h->col = (h->indent + 1) * 2 + h->bufcol + 1; + h->bufcol = 0; + h->flags &= ~HTML_BUFFER; } - -int -md_line_html(void *data, char *buf) +/* + * If something was printed on the current output line, end it. + * Not to be called right after print_indent(). + */ +void +print_endline(struct html *h) { + if (h->col == 0) + return; - return(mlg_line((struct md_mlg *)data, buf)); + if (h->bufcol) { + putchar(' '); + fwrite(h->buf, h->bufcol, 1, stdout); + h->bufcol = 0; + } + putchar('\n'); + h->col = 0; + h->flags |= HTML_NOSPACE; + h->flags &= ~HTML_BUFFER; } +/* + * Flush the HTML output buffer. + * If it is inactive, activate it. + */ +static void +print_endword(struct html *h) +{ + if (h->noindent) { + print_byte(h, ' '); + return; + } -int -md_exit_html(void *data, int flush) + if ((h->flags & HTML_BUFFER) == 0) { + h->col++; + h->flags |= HTML_BUFFER; + } else if (h->bufcol) { + putchar(' '); + fwrite(h->buf, h->bufcol, 1, stdout); + h->col += h->bufcol + 1; + } + h->bufcol = 0; +} + +/* + * If at the beginning of a new output line, + * perform indentation and mark the line as containing output. + * Make sure to really produce some output right afterwards, + * but do not use print_otag() for producing it. + */ +static void +print_indent(struct html *h) { + size_t i; - return(mlg_exit((struct md_mlg *)data, flush)); + if (h->col) + return; + + if (h->noindent == 0) { + h->col = h->indent * 2; + for (i = 0; i < h->col; i++) + putchar(' '); + } + h->flags &= ~HTML_NOSPACE; } +/* + * Print or buffer some characters + * depending on the current HTML output buffer state. + */ +static void +print_word(struct html *h, const char *cp) +{ + while (*cp != '\0') + print_byte(h, *cp++); +} -void * -md_init_html(const struct md_args *args, - struct md_mbuf *mbuf, const struct md_rbuf *rbuf) +/* + * Calculate the scaling unit passed in a `-width' argument. This uses + * either a native scaling unit (e.g., 1i, 2m) or the string length of + * the value. + */ +static void +a2width(const char *p, struct roffsu *su) { + const char *end; - return(mlg_alloc(args, rbuf, mbuf, html_begintag, - html_endtag, html_begin, html_end)); + end = a2roffsu(p, su, SCALE_MAX); + if (end == NULL || *end != '\0') { + su->unit = SCALE_EN; + su->scale = html_strlen(p); + } else if (su->scale < 0.0) + su->scale = 0.0; } -