-/* $Id: html.c,v 1.251 2019/01/11 12:56:42 schwarze Exp $ */
+/* $Id: html.c,v 1.261 2019/09/05 13:35:04 schwarze Exp $ */
/*
* Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
* Copyright (c) 2011-2015, 2017-2019 Ingo Schwarze <schwarze@openbsd.org>
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},
- {"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},
+ {"section", HTML_NLALL},
{"table", HTML_NLALL | HTML_INDENT},
{"tr", HTML_NLALL | HTML_INDENT},
{"td", HTML_NLAROUND},
{"dl", HTML_NLALL | HTML_INDENT},
{"dt", HTML_NLAROUND},
{"dd", HTML_NLAROUND | HTML_INDENT},
- {"p", 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},
+ {"h1", HTML_TOPHRASE | HTML_NLAROUND},
+ {"h2", HTML_TOPHRASE | HTML_NLAROUND},
+ {"p", HTML_TOPHRASE | HTML_NLAROUND | HTML_INDENT},
+ {"pre", HTML_TOPHRASE | HTML_NLALL | 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},
+ {"math", HTML_INPHRASE | HTML_NLALL | HTML_INDENT},
{"mrow", 0},
{"mi", 0},
{"mn", 0},
/* Avoid duplicate HTML id= attributes. */
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 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 *);
void *
return h;
}
-void
-html_free(void *p)
+static void
+html_reset_internal(struct html *h)
{
struct tag *tag;
- struct html *h;
char *cp;
unsigned int slot;
- h = (struct html *)p;
while ((tag = h->tag) != NULL) {
h->tag = tag->next;
free(tag);
}
- free(h);
-
cp = ohash_first(&id_unique, &slot);
while (cp != NULL) {
free(cp);
ohash_delete(&id_unique);
}
+void
+html_reset(void *p)
+{
+ html_reset_internal(p);
+ mandoc_ohash_init(&id_unique, 4, 0);
+}
+
+void
+html_free(void *p)
+{
+ html_reset_internal(p);
+ free(p);
+}
+
void
print_gen_head(struct html *h)
{
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_text(h, ".Nd, .Bf, .Op { display: inline; }");
print_endline(h);
- print_text(h, "span.Pa, span.Ad { font-style: italic; }");
+ print_text(h, ".Pa, .Ad { font-style: italic; }");
print_endline(h);
- print_text(h, "span.Ms { font-weight: bold; }");
+ print_text(h, ".Ms { font-weight: bold; }");
print_endline(h);
- print_text(h, "dl.Bl-diag ");
+ print_text(h, ".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_text(h, "code.Nm, .Fl, .Cm, .Ic, code.In, .Fd, .Fn, .Cd "
+ "{ font-weight: bold; font-family: inherit; }");
print_tagq(h, t);
}
-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;
- break;
case ESCAPE_FONTCW:
- font = HTMLFONT_CW;
+ case ESCAPE_FONTROMAN:
break;
case ESCAPE_FONT:
- case ESCAPE_FONTROMAN:
- font = HTMLFONT_NONE;
+ font = ESCAPE_FONTROMAN;
break;
default:
- return;
+ 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 HTMLFONT_CW:
+ case ESCAPE_FONTCW:
h->metaf = print_otag(h, TAG_SPAN, "c", "Li");
break;
default:
void
html_close_paragraph(struct html *h)
{
- struct tag *t;
-
- for (t = h->tag; t != NULL; t = t->next) {
- if (t->tag == TAG_P || t->tag == TAG_PRE) {
- print_tagq(h, t);
+ 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;
}
}
case ESCAPE_FONTROMAN:
if (0 == norecurse) {
h->flags |= HTML_NOSPACE;
- print_metaf(h, esc);
+ if (html_setfont(h, esc))
+ print_metaf(h);
h->flags &= ~HTML_NOSPACE;
}
continue;
tflags = htmltags[tag].flags;
+ /* 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->tag;
+ t->refcnt = 0;
+ t->closed = 0;
h->tag = t;
} else
t = NULL;
/* Accommodate for "well-formed" singleton escaping. */
- if (HTML_AUTOCLOSE & htmltags[tag].flags)
+ if (htmltags[tag].flags & HTML_NOSTACK)
print_byte(h, '/');
print_byte(h, '>');
{
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)
- 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);
+ 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
void
print_text(struct html *h, const char *word)
{
+ /*
+ * 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)
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;
- case HTMLFONT_CW:
- h->metaf = print_otag(h, TAG_SPAN, "c", "Li");
- break;
- default:
- print_indent(h);
- break;
- }
+ /*
+ * Print the text, optionally surrounded by HTML whitespace,
+ * optionally manually switching fonts before and after.
+ */
- assert(word);
+ assert(h->metaf == NULL);
+ print_metaf(h);
+ print_indent(h);
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;
}
void
print_tagq(struct html *h, const struct tag *until)
{
- struct tag *tag;
+ struct tag *this, *next;
- while ((tag = h->tag) != NULL) {
- print_ctag(h, tag);
- if (tag == until)
- return;
+ for (this = h->tag; this != NULL; this = next) {
+ next = this == until ? NULL : this->next;
+ print_ctag(h, this);
}
}
void
print_stagq(struct html *h, const struct tag *suntil)
{
- struct tag *tag;
+ struct tag *this, *next;
- while ((tag = h->tag) != NULL) {
- if (tag == suntil ||
- (tag->next == suntil &&
- (tag->tag == TAG_P || tag->tag == TAG_PRE)))
- 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);
}
}
{
size_t i;
- if (h->col)
+ if (h->col || h->noindent)
return;
- if (h->noindent == 0) {
- h->col = h->indent * 2;
- for (i = 0; i < h->col; i++)
- putchar(' ');
- }
- h->flags &= ~HTML_NOSPACE;
+ h->col = h->indent * 2;
+ for (i = 0; i < h->col; i++)
+ putchar(' ');
}
/*
git.ckatri.com / mandoc.git / blobdiff