-/* $Id: html.c,v 1.196 2017/01/18 19:22:21 schwarze Exp $ */
+/* $Id: html.c,v 1.275 2021/09/09 14:47:24 schwarze Exp $ */
/*
* Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2011-2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2011-2015, 2017-2021 Ingo Schwarze <schwarze@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* 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.
+ *
+ * Common functions for mandoc(1) HTML formatters.
+ * For use by individual formatters and by the main program.
*/
#include "config.h"
#include <sys/types.h>
+#include <sys/stat.h>
#include <assert.h>
#include <ctype.h>
#include <stdarg.h>
+#include <stddef.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
-#include "mandoc.h"
#include "mandoc_aux.h"
+#include "mandoc_ohash.h"
+#include "mandoc.h"
+#include "roff.h"
#include "out.h"
#include "html.h"
#include "manconf.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_INPHRASE (1 << 0) /* Can appear in phrasing context. */
+#define HTML_TOPHRASE (1 << 1) /* Establishes phrasing context. */
+#define HTML_NOSTACK (1 << 2) /* Does not have an end tag. */
+#define HTML_NLBEFORE (1 << 3) /* Output line break before opening. */
+#define HTML_NLBEGIN (1 << 4) /* Output line break after opening. */
+#define HTML_NLEND (1 << 5) /* Output line break before closing. */
+#define HTML_NLAFTER (1 << 6) /* Output line break after closing. */
#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)
+#define HTML_INDENT (1 << 7) /* Indent content by two spaces. */
+#define HTML_NOINDENT (1 << 8) /* Exception: never indent content. */
};
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},
+ {"meta", HTML_NOSTACK | HTML_NLALL},
+ {"link", HTML_NOSTACK | HTML_NLALL},
+ {"style", HTML_NLALL | HTML_INDENT},
{"title", HTML_NLAROUND},
+ {"body", HTML_NLALL},
{"div", HTML_NLAROUND},
- {"h1", HTML_NLAROUND},
- {"h2", HTML_NLAROUND},
- {"span", 0},
- {"link", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
- {"br", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
- {"a", 0},
+ {"section", HTML_NLALL},
{"table", HTML_NLALL | HTML_INDENT},
- {"tbody", HTML_NLALL | HTML_INDENT},
- {"col", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
{"tr", HTML_NLALL | HTML_INDENT},
{"td", HTML_NLAROUND},
{"li", HTML_NLAROUND | HTML_INDENT},
{"dl", HTML_NLALL | HTML_INDENT},
{"dt", HTML_NLAROUND},
{"dd", HTML_NLAROUND | HTML_INDENT},
- {"blockquote", HTML_NLALL | HTML_INDENT},
- {"pre", HTML_NLALL | HTML_NOINDENT},
- {"b", 0},
- {"i", 0},
- {"code", 0},
- {"small", 0},
- {"style", HTML_NLALL | HTML_INDENT},
- {"math", HTML_NLALL | HTML_INDENT},
+ {"h1", HTML_TOPHRASE | HTML_NLAROUND},
+ {"h2", HTML_TOPHRASE | HTML_NLAROUND},
+ {"p", HTML_TOPHRASE | HTML_NLAROUND | HTML_INDENT},
+ {"pre", HTML_TOPHRASE | HTML_NLAROUND | HTML_NOINDENT},
+ {"a", HTML_INPHRASE | HTML_TOPHRASE},
+ {"b", HTML_INPHRASE | HTML_TOPHRASE},
+ {"cite", HTML_INPHRASE | HTML_TOPHRASE},
+ {"code", HTML_INPHRASE | HTML_TOPHRASE},
+ {"i", HTML_INPHRASE | HTML_TOPHRASE},
+ {"small", HTML_INPHRASE | HTML_TOPHRASE},
+ {"span", HTML_INPHRASE | HTML_TOPHRASE},
+ {"var", HTML_INPHRASE | HTML_TOPHRASE},
+ {"br", HTML_INPHRASE | HTML_NOSTACK | HTML_NLALL},
+ {"hr", HTML_INPHRASE | HTML_NOSTACK},
+ {"mark", HTML_INPHRASE },
+ {"math", HTML_INPHRASE | HTML_NLALL | HTML_INDENT},
{"mrow", 0},
{"mi", 0},
+ {"mn", 0},
{"mo", 0},
{"msup", 0},
{"msub", 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 */
+/* Avoid duplicate HTML id= attributes. */
+
+struct id_entry {
+ int ord; /* Ordinal number of the latest occurrence. */
+ char id[]; /* The id= attribute without any ordinal suffix. */
};
+static struct ohash id_unique;
+
+static void html_reset_internal(struct html *);
+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 *);
-static void a2width(const char *, struct roffsu *);
-static void html_endline(struct html *);
-static void html_indent(struct html *);
static void print_ctag(struct html *, struct tag *);
-static int print_escape(char);
+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);
+static void print_metaf(struct html *);
void *
h = mandoc_calloc(1, sizeof(struct html));
- h->tags.head = NULL;
+ h->tag = NULL;
+ h->metac = h->metal = ESCAPE_FONTROMAN;
h->style = outopts->style;
- h->base_man = outopts->man;
+ if ((h->base_man1 = outopts->man) == NULL)
+ h->base_man2 = NULL;
+ else if ((h->base_man2 = strchr(h->base_man1, ';')) != NULL)
+ *h->base_man2++ = '\0';
h->base_includes = outopts->includes;
if (outopts->fragment)
h->oflags |= HTML_FRAGMENT;
+ if (outopts->toc)
+ h->oflags |= HTML_TOC;
+
+ mandoc_ohash_init(&id_unique, 4, offsetof(struct id_entry, id));
return h;
}
-void
-html_free(void *p)
+static void
+html_reset_internal(struct html *h)
{
struct tag *tag;
- struct html *h;
+ struct id_entry *entry;
+ unsigned int slot;
- h = (struct html *)p;
-
- while ((tag = h->tags.head) != NULL) {
- h->tags.head = tag->next;
+ while ((tag = h->tag) != NULL) {
+ h->tag = tag->next;
free(tag);
}
+ entry = ohash_first(&id_unique, &slot);
+ while (entry != NULL) {
+ free(entry);
+ entry = ohash_next(&id_unique, &slot);
+ }
+ ohash_delete(&id_unique);
+}
+
+void
+html_reset(void *p)
+{
+ html_reset_internal(p);
+ mandoc_ohash_init(&id_unique, 4, offsetof(struct id_entry, id));
+}
- free(h);
+void
+html_free(void *p)
+{
+ html_reset_internal(p);
+ free(p);
}
void
struct tag *t;
print_otag(h, TAG_META, "?", "charset", "utf-8");
+ print_otag(h, TAG_META, "??", "name", "viewport",
+ "content", "width=device-width, initial-scale=1.0");
+ if (h->style != NULL) {
+ print_otag(h, TAG_LINK, "?h??", "rel", "stylesheet",
+ h->style, "type", "text/css", "media", "all");
+ return;
+ }
/*
- * Print a default style-sheet.
+ * Print a minimal embedded style sheet.
*/
t = print_otag(h, TAG_STYLE, "");
print_text(h, "table.head, table.foot { width: 100%; }");
- html_endline(h);
+ print_endline(h);
print_text(h, "td.head-rtitle, td.foot-os { text-align: right; }");
- html_endline(h);
+ print_endline(h);
print_text(h, "td.head-vol { text-align: center; }");
- html_endline(h);
- print_text(h, "table.foot td { width: 50%; }");
- html_endline(h);
- print_text(h, "table.head td { width: 33%; }");
- html_endline(h);
- print_text(h, "div.spacer { margin: 1em 0; }");
+ print_endline(h);
+ print_text(h, ".Nd, .Bf, .Op { display: inline; }");
+ print_endline(h);
+ print_text(h, ".Pa, .Ad { font-style: italic; }");
+ print_endline(h);
+ print_text(h, ".Ms { font-weight: bold; }");
+ print_endline(h);
+ print_text(h, ".Bl-diag ");
+ print_byte(h, '>');
+ print_text(h, " dt { font-weight: bold; }");
+ print_endline(h);
+ print_text(h, "code.Nm, .Fl, .Cm, .Ic, code.In, .Fd, .Fn, .Cd "
+ "{ font-weight: bold; font-family: inherit; }");
print_tagq(h, t);
-
- if (h->style)
- print_otag(h, TAG_LINK, "?h??", "rel", "stylesheet",
- h->style, "type", "text/css", "media", "all");
}
-static void
-print_metaf(struct html *h, enum mandoc_esc deco)
+int
+html_setfont(struct html *h, enum mandoc_esc font)
{
- enum htmlfont font;
-
- switch (deco) {
+ switch (font) {
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;
+ case ESCAPE_FONTROMAN:
+ case ESCAPE_FONTCR:
+ case ESCAPE_FONTCB:
+ case ESCAPE_FONTCI:
break;
case ESCAPE_FONT:
- case ESCAPE_FONTROMAN:
- font = HTMLFONT_NONE;
+ font = ESCAPE_FONTROMAN;
break;
default:
- abort();
+ return 0;
}
+ h->metal = h->metac;
+ h->metac = font;
+ return 1;
+}
+static void
+print_metaf(struct html *h)
+{
if (h->metaf) {
print_tagq(h, h->metaf);
h->metaf = NULL;
}
-
- h->metal = h->metac;
- h->metac = font;
-
- switch (font) {
- case HTMLFONT_ITALIC:
+ switch (h->metac) {
+ case ESCAPE_FONTITALIC:
h->metaf = print_otag(h, TAG_I, "");
break;
- case HTMLFONT_BOLD:
+ case ESCAPE_FONTBOLD:
h->metaf = print_otag(h, TAG_B, "");
break;
- case HTMLFONT_BI:
+ case ESCAPE_FONTBI:
h->metaf = print_otag(h, TAG_B, "");
print_otag(h, TAG_I, "");
break;
+ case ESCAPE_FONTCR:
+ h->metaf = print_otag(h, TAG_SPAN, "c", "Li");
+ break;
+ case ESCAPE_FONTCB:
+ h->metaf = print_otag(h, TAG_SPAN, "c", "Li");
+ print_otag(h, TAG_B, "");
+ break;
+ case ESCAPE_FONTCI:
+ h->metaf = print_otag(h, TAG_SPAN, "c", "Li");
+ print_otag(h, TAG_I, "");
+ break;
default:
break;
}
}
-int
-html_strlen(const char *cp)
+void
+html_close_paragraph(struct html *h)
+{
+ struct tag *this, *next;
+ int flags;
+
+ this = h->tag;
+ for (;;) {
+ next = this->next;
+ flags = htmltags[this->tag].flags;
+ if (flags & (HTML_INPHRASE | HTML_TOPHRASE))
+ print_ctag(h, this);
+ if ((flags & HTML_INPHRASE) == 0)
+ break;
+ this = next;
+ }
+}
+
+/*
+ * ROFF_nf switches to no-fill mode, ROFF_fi to fill mode.
+ * TOKEN_NONE does not switch. The old mode is returned.
+ */
+enum roff_tok
+html_fillmode(struct html *h, enum roff_tok want)
{
- size_t rsz;
- int skip, sz;
+ struct tag *t;
+ enum roff_tok had;
- /*
- * 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.
- */
+ for (t = h->tag; t != NULL; t = t->next)
+ if (t->tag == TAG_PRE)
+ break;
- sz = 0;
- skip = 0;
- while (1) {
- rsz = strcspn(cp, "\\");
- if (rsz) {
- cp += rsz;
- if (skip) {
- skip = 0;
- rsz--;
- }
- sz += rsz;
- }
- if ('\0' == *cp)
+ had = t == NULL ? ROFF_fi : ROFF_nf;
+
+ if (want != had) {
+ switch (want) {
+ case ROFF_fi:
+ print_tagq(h, t);
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++;
+ case ROFF_nf:
+ html_close_paragraph(h);
+ print_otag(h, TAG_PRE, "");
break;
- case ESCAPE_SKIPCHAR:
- skip = 1;
+ case TOKEN_NONE:
+ break;
+ default:
+ abort();
+ }
+ }
+ return had;
+}
+
+/*
+ * Allocate a string to be used for the "id=" attribute of an HTML
+ * element and/or as a segment identifier for a URI in an <a> element.
+ * The function may fail and return NULL if the node lacks text data
+ * to create the attribute from.
+ * The caller is responsible for free(3)ing the returned string.
+ *
+ * If the "unique" argument is non-zero, the "id_unique" ohash table
+ * is used for de-duplication. If the "unique" argument is 1,
+ * it is the first time the function is called for this tag and
+ * location, so if an ordinal suffix is needed, it is incremented.
+ * If the "unique" argument is 2, it is the second time the function
+ * is called for this tag and location, so the ordinal suffix
+ * remains unchanged.
+ */
+char *
+html_make_id(const struct roff_node *n, int unique)
+{
+ const struct roff_node *nch;
+ struct id_entry *entry;
+ char *buf, *cp;
+ size_t len;
+ unsigned int slot;
+
+ if (n->tag != NULL)
+ buf = mandoc_strdup(n->tag);
+ else {
+ switch (n->tok) {
+ case MDOC_Sh:
+ case MDOC_Ss:
+ case MDOC_Sx:
+ case MAN_SH:
+ case MAN_SS:
+ 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;
break;
default:
+ if (n->child == NULL || n->child->type != ROFFT_TEXT)
+ return NULL;
+ buf = mandoc_strdup(n->child->string);
break;
}
}
- return sz;
+
+ /*
+ * In ID attributes, only use ASCII characters that are
+ * permitted in URL-fragment strings according to the
+ * explicit list at:
+ * https://url.spec.whatwg.org/#url-fragment-string
+ * In addition, reserve '~' for ordinal suffixes.
+ */
+
+ for (cp = buf; *cp != '\0'; cp++)
+ if (isalnum((unsigned char)*cp) == 0 &&
+ strchr("!$&'()*+,-./:;=?@_", *cp) == NULL)
+ *cp = '_';
+
+ if (unique == 0)
+ return buf;
+
+ /* Avoid duplicate HTML id= attributes. */
+
+ slot = ohash_qlookup(&id_unique, buf);
+ if ((entry = ohash_find(&id_unique, slot)) == NULL) {
+ len = strlen(buf) + 1;
+ entry = mandoc_malloc(sizeof(*entry) + len);
+ entry->ord = 1;
+ memcpy(entry->id, buf, len);
+ ohash_insert(&id_unique, slot, entry);
+ } else if (unique == 1)
+ entry->ord++;
+
+ if (entry->ord > 1) {
+ cp = buf;
+ mandoc_asprintf(&buf, "%s~%d", cp, entry->ord);
+ free(cp);
+ }
+ return buf;
}
static int
-print_escape(char c)
+print_escape(struct html *h, char c)
{
switch (c) {
case '<':
- printf("<");
+ print_word(h, "<");
break;
case '>':
- printf(">");
+ print_word(h, ">");
break;
case '&':
- printf("&");
+ print_word(h, "&");
break;
case '"':
- printf(""");
+ print_word(h, """);
break;
case ASCII_NBRSP:
- printf(" ");
+ print_word(h, " ");
break;
case ASCII_HYPH:
- putchar('-');
+ print_byte(h, '-');
break;
case ASCII_BREAK:
break;
static int
print_encode(struct html *h, const char *p, const char *pend, int norecurse)
{
- size_t sz;
- int c, len, nospace;
+ char numbuf[16];
const char *seq;
+ size_t sz;
+ int c, len, breakline, nospace;
enum mandoc_esc esc;
- static const char rejs[9] = { '\\', '<', '>', '&', '"',
+ static const char rejs[10] = { ' ', '\\', '<', '>', '&', '"',
ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' };
if (pend == NULL)
pend = strchr(p, '\0');
+ breakline = 0;
nospace = 0;
while (p < pend) {
continue;
}
- sz = strcspn(p, rejs);
- if (p + sz > pend)
- sz = pend - p;
+ for (sz = strcspn(p, rejs); sz-- && p < pend; p++)
+ print_byte(h, *p);
- fwrite(p, 1, sz, stdout);
- p += (int)sz;
+ if (breakline &&
+ (p >= pend || *p == ' ' || *p == ASCII_NBRSP)) {
+ print_otag(h, TAG_BR, "");
+ breakline = 0;
+ while (p < pend && (*p == ' ' || *p == ASCII_NBRSP))
+ p++;
+ continue;
+ }
if (p >= pend)
break;
- if (print_escape(*p++))
+ 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_FONTITALIC:
case ESCAPE_FONTBI:
case ESCAPE_FONTROMAN:
- if (0 == norecurse)
- print_metaf(h, esc);
+ case ESCAPE_FONTCR:
+ case ESCAPE_FONTCB:
+ case ESCAPE_FONTCI:
+ if (0 == norecurse) {
+ h->flags |= HTML_NOSPACE;
+ if (html_setfont(h, esc))
+ print_metaf(h);
+ h->flags &= ~HTML_NOSPACE;
+ }
continue;
case ESCAPE_SKIPCHAR:
h->flags |= HTML_SKIPCHAR;
continue;
+ case ESCAPE_ERROR:
+ continue;
default:
break;
}
if (c <= 0)
continue;
break;
+ case ESCAPE_UNDEF:
+ c = *seq;
+ break;
+ case ESCAPE_DEVICE:
+ print_word(h, "html");
+ continue;
+ case ESCAPE_BREAK:
+ breakline = 1;
+ continue;
case ESCAPE_NOSPACE:
if ('\0' == *p)
nospace = 1;
if ((c < 0x20 && c != 0x09) ||
(c > 0x7E && c < 0xA0))
c = 0xFFFD;
- if (c > 0x7E)
- printf("&#%d;", c);
- else if ( ! print_escape(c))
- putchar(c);
+ 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 nospace;
static void
print_href(struct html *h, const char *name, const char *sec, int man)
{
+ struct stat sb;
const char *p, *pp;
+ char *filename;
+
+ if (man) {
+ pp = h->base_man1;
+ if (h->base_man2 != NULL) {
+ mandoc_asprintf(&filename, "%s.%s", name, sec);
+ if (stat(filename, &sb) == -1)
+ pp = h->base_man2;
+ free(filename);
+ }
+ } else
+ pp = h->base_includes;
- 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)
- putchar('1');
+ print_byte(h, '1');
else
print_encode(h, sec, NULL, 1);
} else if ((man && p[1] == 'N') ||
print_otag(struct html *h, enum htmltag tag, const char *fmt, ...)
{
va_list ap;
- struct roffsu mysu, *su;
struct tag *t;
const char *attr;
- char *s;
- double v;
- int i, have_style, tflags;
+ char *arg1, *arg2;
+ int style_written, tflags;
tflags = htmltags[tag].flags;
- /* Push this tags onto the stack of open scopes. */
+ /* Flow content is not allowed in phrasing context. */
+
+ if ((tflags & HTML_INPHRASE) == 0) {
+ for (t = h->tag; t != NULL; t = t->next) {
+ if (t->closed)
+ continue;
+ assert((htmltags[t->tag].flags & HTML_TOPHRASE) == 0);
+ break;
+ }
+
+ /*
+ * Always wrap phrasing elements in a paragraph
+ * unless already contained in some flow container;
+ * never put them directly into a section.
+ */
+
+ } else if (tflags & HTML_TOPHRASE && h->tag->tag == TAG_SECTION)
+ print_otag(h, TAG_P, "c", "Pp");
+
+ /* Push this tag onto the stack of open scopes. */
if ((tflags & HTML_NOSTACK) == 0) {
t = mandoc_malloc(sizeof(struct tag));
t->tag = tag;
- t->next = h->tags.head;
- h->tags.head = t;
+ t->next = h->tag;
+ t->refcnt = 0;
+ t->closed = 0;
+ h->tag = t;
} else
t = NULL;
if (tflags & HTML_NLBEFORE)
- html_endline(h);
- if (h->flags & HTML_NLDONE)
- html_indent(h);
+ print_endline(h);
+ if (h->col == 0)
+ print_indent(h);
else if ((h->flags & HTML_NOSPACE) == 0) {
if (h->flags & HTML_KEEP)
- printf(" ");
+ print_word(h, " ");
else {
if (h->flags & HTML_PREKEEP)
h->flags |= HTML_KEEP;
- putchar(' ');
+ print_endword(h);
}
}
/* Print out the tag name and attributes. */
- printf("<%s", htmltags[tag].name);
+ print_byte(h, '<');
+ print_word(h, htmltags[tag].name);
va_start(ap, fmt);
- have_style = 0;
- while (*fmt != '\0') {
- if (*fmt == 's') {
- printf(" style=\"");
- have_style = 1;
- fmt++;
- break;
- }
- s = va_arg(ap, char *);
+ while (*fmt != '\0' && *fmt != 's') {
+
+ /* Parse attributes and arguments. */
+
+ arg1 = va_arg(ap, char *);
+ arg2 = NULL;
switch (*fmt++) {
case 'c':
attr = "class";
attr = "id";
break;
case '?':
- attr = s;
- s = va_arg(ap, char *);
+ attr = arg1;
+ arg1 = va_arg(ap, char *);
break;
default:
abort();
}
- printf(" %s=\"", attr);
+ if (*fmt == 'M')
+ arg2 = va_arg(ap, char *);
+ if (arg1 == NULL)
+ continue;
+
+ /* Print the attributes. */
+
+ print_byte(h, ' ');
+ print_word(h, attr);
+ print_byte(h, '=');
+ print_byte(h, '"');
switch (*fmt) {
- case 'M':
- print_href(h, s, va_arg(ap, char *), 1);
+ case 'I':
+ print_href(h, arg1, NULL, 0);
fmt++;
break;
- case 'I':
- print_href(h, s, NULL, 0);
+ case 'M':
+ print_href(h, arg1, arg2, 1);
fmt++;
break;
case 'R':
- putchar('#');
+ print_byte(h, '#');
+ print_encode(h, arg1, NULL, 1);
fmt++;
- /* FALLTHROUGH */
+ break;
default:
- print_encode(h, s, NULL, 1);
+ print_encode(h, arg1, NULL, 1);
break;
}
- putchar('"');
+ print_byte(h, '"');
}
- /* Print out styles. */
-
- s = NULL;
- su = &mysu;
- while (*fmt != '\0') {
-
- /* First letter: input argument type. */
-
- switch (*fmt++) {
- case 'h':
- i = va_arg(ap, int);
- SCALE_HS_INIT(su, i);
- break;
- case 's':
- s = va_arg(ap, char *);
- break;
- case 'u':
- su = va_arg(ap, struct roffsu *);
- break;
- case 'v':
- i = va_arg(ap, int);
- SCALE_VS_INIT(su, i);
- break;
- case 'w':
- s = va_arg(ap, char *);
- a2width(s, su);
- break;
- default:
- abort();
- }
-
- /* Second letter: style name. */
-
- switch (*fmt++) {
- case 'b':
- attr = "margin-bottom";
- break;
- case 'h':
- attr = "height";
- break;
- case 'i':
- attr = "text-indent";
- break;
- case 'l':
- attr = "margin-left";
- break;
- case 't':
- attr = "margin-top";
- break;
- case 'w':
- attr = "width";
- break;
- case 'W':
- attr = "min-width";
- break;
- case '?':
- printf("%s: %s;", s, va_arg(ap, char *));
+ style_written = 0;
+ while (*fmt++ == 's') {
+ arg1 = va_arg(ap, char *);
+ arg2 = va_arg(ap, char *);
+ if (arg2 == NULL)
continue;
- default:
- abort();
+ print_byte(h, ' ');
+ if (style_written == 0) {
+ print_word(h, "style=\"");
+ style_written = 1;
}
- 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;
- printf("%s: %.2f%s;", attr, v, roffscales[su->unit]);
+ print_word(h, arg1);
+ print_byte(h, ':');
+ print_byte(h, ' ');
+ print_word(h, arg2);
+ print_byte(h, ';');
}
- if (have_style)
- putchar('"');
+ if (style_written)
+ print_byte(h, '"');
va_end(ap);
/* Accommodate for "well-formed" singleton escaping. */
- if (HTML_AUTOCLOSE & htmltags[tag].flags)
- putchar('/');
+ if (htmltags[tag].flags & HTML_NOSTACK)
+ print_byte(h, '/');
- putchar('>');
+ print_byte(h, '>');
if (tflags & HTML_NLBEGIN)
- html_endline(h);
+ print_endline(h);
else
h->flags |= HTML_NOSPACE;
return t;
}
+/*
+ * Print an element with an optional "id=" attribute.
+ * If the element has phrasing content and an "id=" attribute,
+ * also add a permalink: outside if it can be in phrasing context,
+ * inside otherwise.
+ */
+struct tag *
+print_otag_id(struct html *h, enum htmltag elemtype, const char *cattr,
+ struct roff_node *n)
+{
+ struct roff_node *nch;
+ struct tag *ret, *t;
+ char *id, *href;
+
+ ret = NULL;
+ id = href = NULL;
+ if (n->flags & NODE_ID)
+ id = html_make_id(n, 1);
+ if (n->flags & NODE_HREF)
+ href = id == NULL ? html_make_id(n, 2) : id;
+ if (href != NULL && htmltags[elemtype].flags & HTML_INPHRASE)
+ ret = print_otag(h, TAG_A, "chR", "permalink", href);
+ t = print_otag(h, elemtype, "ci", cattr, id);
+ if (ret == NULL) {
+ ret = t;
+ if (href != NULL && (nch = n->child) != NULL) {
+ /* man(7) is safe, it tags phrasing content only. */
+ if (n->tok > MDOC_MAX ||
+ htmltags[elemtype].flags & HTML_TOPHRASE)
+ nch = NULL;
+ else /* For mdoc(7), beware of nested blocks. */
+ while (nch != NULL && nch->type == ROFFT_TEXT)
+ nch = nch->next;
+ if (nch == NULL)
+ print_otag(h, TAG_A, "chR", "permalink", href);
+ }
+ }
+ free(id);
+ if (id == NULL)
+ free(href);
+ return ret;
+}
+
static void
print_ctag(struct html *h, struct tag *tag)
{
int tflags;
- /*
- * 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)
- html_endline(h);
- html_indent(h);
- printf("</%s>", htmltags[tag->tag].name);
- if (tflags & HTML_NLAFTER)
- html_endline(h);
-
- h->tags.head = tag->next;
- free(tag);
+ if (tag->closed == 0) {
+ tag->closed = 1;
+ 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);
+ }
+ if (tag->refcnt == 0) {
+ h->tag = tag->next;
+ free(tag);
+ }
}
void
print_gen_decls(struct html *h)
{
+ print_word(h, "<!DOCTYPE html>");
+ print_endline(h);
+}
- puts("<!DOCTYPE html>");
- h->flags |= HTML_NLDONE;
+void
+print_gen_comment(struct html *h, struct roff_node *n)
+{
+ int wantblank;
+
+ print_word(h, "<!-- This is an automatically generated file."
+ " Do not edit.");
+ h->indent = 1;
+ wantblank = 0;
+ while (n != NULL && n->type == ROFFT_COMMENT) {
+ if (strstr(n->string, "-->") == 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->flags & (HTML_NLDONE | HTML_NOSPACE)) == 0) {
+ print_tagged_text(h, word, NULL);
+}
+
+void
+print_tagged_text(struct html *h, const char *word, struct roff_node *n)
+{
+ struct tag *t;
+ char *href;
+
+ /*
+ * Always wrap text in a paragraph unless already contained in
+ * some flow container; never put it directly into a section.
+ */
+
+ if (h->tag->tag == TAG_SECTION)
+ print_otag(h, TAG_P, "c", "Pp");
+
+ /* Output whitespace before this text? */
+
+ if (h->col && (h->flags & HTML_NOSPACE) == 0) {
if ( ! (HTML_KEEP & h->flags)) {
if (HTML_PREKEEP & h->flags)
h->flags |= HTML_KEEP;
- putchar(' ');
+ print_endword(h);
} else
- printf(" ");
+ 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:
- html_indent(h);
- break;
- }
+ /*
+ * Optionally switch fonts, optionally write a permalink, then
+ * print the text, optionally surrounded by HTML whitespace.
+ */
+
+ assert(h->metaf == NULL);
+ print_metaf(h);
+ print_indent(h);
+
+ if (n != NULL && (href = html_make_id(n, 2)) != NULL) {
+ t = print_otag(h, TAG_A, "chR", "permalink", href);
+ free(href);
+ } else
+ t = NULL;
- assert(word);
if ( ! print_encode(h, word, NULL, 0)) {
if ( ! (h->flags & HTML_NONOSPACE))
h->flags &= ~HTML_NOSPACE;
} else
h->flags |= HTML_NOSPACE | HTML_NONEWLINE;
- if (h->metaf) {
+ if (h->metaf != NULL) {
print_tagq(h, h->metaf);
h->metaf = NULL;
- }
+ } else if (t != NULL)
+ print_tagq(h, t);
h->flags &= ~HTML_IGNDELIM;
}
void
print_tagq(struct html *h, const struct tag *until)
{
- struct tag *tag;
+ struct tag *this, *next;
- while ((tag = h->tags.head) != NULL) {
- print_ctag(h, tag);
- if (until && tag == until)
- return;
+ for (this = h->tag; this != NULL; this = next) {
+ next = this == until ? NULL : this->next;
+ print_ctag(h, this);
}
}
+/*
+ * Close out all open elements up to but excluding suntil.
+ * Note that a paragraph just inside stays open together with it
+ * because paragraphs include subsequent phrasing content.
+ */
void
print_stagq(struct html *h, const struct tag *suntil)
{
- struct tag *tag;
+ struct tag *this, *next;
- while ((tag = h->tags.head) != NULL) {
- if (suntil && tag == suntil)
- return;
- print_ctag(h, tag);
+ for (this = h->tag; this != NULL; this = next) {
+ next = this->next;
+ if (this == suntil || (next == suntil &&
+ (this->tag == TAG_P || this->tag == TAG_PRE)))
+ break;
+ print_ctag(h, this);
}
}
-void
-print_paragraph(struct html *h)
+
+/***********************************************************************
+ * 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)
{
- struct tag *t;
+ if ((h->flags & HTML_BUFFER) == 0) {
+ putchar(c);
+ h->col++;
+ return;
+ }
- t = print_otag(h, TAG_DIV, "c", "spacer");
- print_tagq(h, t);
+ if (h->col + h->bufcol < sizeof(h->buf)) {
+ h->buf[h->bufcol++] = c;
+ return;
+ }
+
+ 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;
}
/*
* If something was printed on the current output line, end it.
- * Not to be called right after html_indent().
+ * Not to be called right after print_indent().
*/
-static void
-html_endline(struct html *h)
+void
+print_endline(struct html *h)
{
- if (h->flags & HTML_NLDONE)
+ if (h->col == 0)
return;
+ if (h->bufcol) {
+ putchar(' ');
+ fwrite(h->buf, h->bufcol, 1, stdout);
+ h->bufcol = 0;
+ }
putchar('\n');
- h->flags |= HTML_NLDONE | HTML_NOSPACE;
+ 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;
+ }
+
+ 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;
}
/*
* but do not use print_otag() for producing it.
*/
static void
-html_indent(struct html *h)
+print_indent(struct html *h)
{
- int i;
+ size_t i;
- if ((h->flags & HTML_NLDONE) == 0)
+ if (h->col || h->noindent)
return;
- if (h->noindent == 0)
- for (i = 0; i < h->indent * 2; i++)
- putchar(' ');
- h->flags &= ~(HTML_NLDONE | HTML_NOSPACE);
+ h->col = h->indent * 2;
+ for (i = 0; i < h->col; i++)
+ putchar(' ');
}
/*
- * 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.
+ * Print or buffer some characters
+ * depending on the current HTML output buffer state.
*/
static void
-a2width(const char *p, struct roffsu *su)
+print_word(struct html *h, const char *cp)
{
- if (a2roffsu(p, su, SCALE_MAX) < 2) {
- su->unit = SCALE_EN;
- su->scale = html_strlen(p);
- } else if (su->scale < 0.0)
- su->scale = 0.0;
+ while (*cp != '\0')
+ print_byte(h, *cp++);
}
git.ckatri.com / mandoc.git / blobdiff