Made tree/term/out() functions return void.

Put err() functions back into front-ends (no use making it needlessly complex).

1 files changed, 638 insertions, 0 deletions

diff --git a/html.c b/html.c
new file mode 100644
index 00000000..43502cb7
--- /dev/null
+++ b/html.c
@@ -0,0 +1,638 @@
+/*	$Id: html.c,v 1.29 2009/09/16 09:41:24 kristaps Exp $ */
+/*
+ * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
+ *
+ * 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.
+ *
+ * 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.
+ */
+#include <assert.h>
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "mdoc.h"
+#include "man.h"
+
+#define	DOCTYPE		"-//W3C//DTD HTML 4.01//EN"
+#define	DTD		"http://www.w3.org/TR/html4/strict.dtd"
+
+enum	htmltag {
+	TAG_HTML,
+	TAG_HEAD,
+	TAG_BODY,
+	TAG_META,
+	TAG_TITLE,
+	TAG_DIV,
+	TAG_H1,
+	TAG_H2,
+	TAG_P,
+	TAG_SPAN,
+	TAG_LINK,
+	TAG_MAX
+};
+
+enum	htmlattr {
+	ATTR_HTTPEQUIV,
+	ATTR_CONTENT,
+	ATTR_NAME,
+	ATTR_REL,
+	ATTR_HREF,
+	ATTR_TYPE,
+	ATTR_MEDIA,
+	ATTR_CLASS,
+	ATTR_MAX
+};
+
+struct	htmldata {
+	char		 *name;
+	int		  flags;
+#define	HTML_BLOCK	 (1 << 0)
+};
+
+static	const struct htmldata htmltags[TAG_MAX] = {
+	{"html",	HTML_BLOCK}, /* TAG_HTML */
+	{"head",	HTML_BLOCK}, /* TAG_HEAD */
+	{"body",	HTML_BLOCK}, /* TAG_BODY */
+	{"meta",	HTML_BLOCK}, /* TAG_META */
+	{"title",	HTML_BLOCK}, /* TAG_TITLE */
+	{"div",		HTML_BLOCK}, /* TAG_DIV */
+	{"h1",		0}, /* TAG_H1 */
+	{"h2",		0}, /* TAG_H2 */
+	{"p",		HTML_BLOCK}, /* TAG_P */
+	{"span",	0}, /* TAG_SPAN */
+	{"link",	HTML_BLOCK}, /* TAG_LINK */
+};
+
+static	const char	 *const htmlattrs[ATTR_MAX] = {
+	"http-equiv",
+	"content",
+	"name",
+	"rel",
+	"href",
+	"type",
+	"media",
+	"class"
+};
+
+struct	htmlpair {
+	enum htmlattr	  key;
+	char		 *val;
+};
+
+struct	html {
+	int		  flags;
+#define	HTML_NOSPACE	 (1 << 0)
+};
+
+#define	MDOC_ARGS	  const struct mdoc_meta *m, \
+			  const struct mdoc_node *n, \
+			  struct html *h
+#define	MAN_ARGS	  const struct man_meta *m, \
+			  const struct man_node *n, \
+			  struct html *h
+struct	htmlmdoc {
+	int		(*pre)(MDOC_ARGS);
+	void		(*post)(MDOC_ARGS);
+};
+
+static	void		  print_gen_doctype(struct html *);
+static	void		  print_gen_head(struct html *);
+static	void		  print_mdoc(MDOC_ARGS);
+static	void		  print_mdoc_head(MDOC_ARGS);
+static	void		  print_mdoc_node(MDOC_ARGS);
+static	void		  print_man(MAN_ARGS);
+static	void		  print_man_head(MAN_ARGS);
+static	void		  print_man_body(MAN_ARGS);
+static	void		  print_otag(struct html *, enum htmltag, 
+				int, const struct htmlpair *);
+static	void		  print_ctag(struct html *, enum htmltag);
+static	void		  print_encode(const char *);
+static	void		  print_text(struct html *, const char *);
+static	int		  mdoc_root_pre(MDOC_ARGS);
+static	void		  mdoc_root_post(MDOC_ARGS);
+
+static	int		  mdoc_nd_pre(MDOC_ARGS);
+static	int		  mdoc_nm_pre(MDOC_ARGS);
+static	void		  mdoc_nm_post(MDOC_ARGS);
+static	int		  mdoc_pp_pre(MDOC_ARGS);
+static	int		  mdoc_sh_pre(MDOC_ARGS);
+static	void		  mdoc_sh_post(MDOC_ARGS);
+static	int		  mdoc_ss_pre(MDOC_ARGS);
+static	void		  mdoc_ss_post(MDOC_ARGS);
+
+static	const struct htmlmdoc mdocs[MDOC_MAX] = {
+	{NULL, NULL}, /* Ap */
+	{NULL, NULL}, /* Dd */
+	{NULL, NULL}, /* Dt */
+	{NULL, NULL}, /* Os */
+	{mdoc_sh_pre, mdoc_sh_post }, /* Sh */
+	{mdoc_ss_pre, mdoc_ss_post }, /* Ss */ 
+	{mdoc_pp_pre, NULL}, /* Pp */ 
+	{NULL, NULL}, /* D1 */
+	{NULL, NULL}, /* Dl */
+	{NULL, NULL}, /* Bd */
+	{NULL, NULL}, /* Ed */
+	{NULL, NULL}, /* Bl */
+	{NULL, NULL}, /* El */
+	{NULL, NULL}, /* It */
+	{NULL, NULL}, /* Ad */ 
+	{NULL, NULL}, /* An */
+	{NULL, NULL}, /* Ar */
+	{NULL, NULL}, /* Cd */
+	{NULL, NULL}, /* Cm */
+	{NULL, NULL}, /* Dv */ 
+	{NULL, NULL}, /* Er */ 
+	{NULL, NULL}, /* Ev */ 
+	{NULL, NULL}, /* Ex */
+	{NULL, NULL}, /* Fa */ 
+	{NULL, NULL}, /* Fd */ 
+	{NULL, NULL}, /* Fl */
+	{NULL, NULL}, /* Fn */ 
+	{NULL, NULL}, /* Ft */ 
+	{NULL, NULL}, /* Ic */ 
+	{NULL, NULL}, /* In */ 
+	{NULL, NULL}, /* Li */
+	{mdoc_nd_pre, NULL}, /* Nd */ 
+	{mdoc_nm_pre, mdoc_nm_post}, /* Nm */ 
+	{NULL, NULL}, /* Op */
+	{NULL, NULL}, /* Ot */
+	{NULL, NULL}, /* Pa */
+	{NULL, NULL}, /* Rv */
+	{NULL, NULL}, /* St */ 
+	{NULL, NULL}, /* Va */
+	{NULL, NULL}, /* Vt */ 
+	{NULL, NULL}, /* Xr */
+	{NULL, NULL}, /* %A */
+	{NULL, NULL}, /* %B */
+	{NULL, NULL}, /* %D */
+	{NULL, NULL}, /* %I */
+	{NULL, NULL}, /* %J */
+	{NULL, NULL}, /* %N */
+	{NULL, NULL}, /* %O */
+	{NULL, NULL}, /* %P */
+	{NULL, NULL}, /* %R */
+	{NULL, NULL}, /* %T */
+	{NULL, NULL}, /* %V */
+	{NULL, NULL}, /* Ac */
+	{NULL, NULL}, /* Ao */
+	{NULL, NULL}, /* Aq */
+	{NULL, NULL}, /* At */
+	{NULL, NULL}, /* Bc */
+	{NULL, NULL}, /* Bf */ 
+	{NULL, NULL}, /* Bo */
+	{NULL, NULL}, /* Bq */
+	{NULL, NULL}, /* Bsx */
+	{NULL, NULL}, /* Bx */
+	{NULL, NULL}, /* Db */
+	{NULL, NULL}, /* Dc */
+	{NULL, NULL}, /* Do */
+	{NULL, NULL}, /* Dq */
+	{NULL, NULL}, /* Ec */
+	{NULL, NULL}, /* Ef */
+	{NULL, NULL}, /* Em */ 
+	{NULL, NULL}, /* Eo */
+	{NULL, NULL}, /* Fx */
+	{NULL, NULL}, /* Ms */
+	{NULL, NULL}, /* No */
+	{NULL, NULL}, /* Ns */
+	{NULL, NULL}, /* Nx */
+	{NULL, NULL}, /* Ox */
+	{NULL, NULL}, /* Pc */
+	{NULL, NULL}, /* Pf */
+	{NULL, NULL}, /* Po */
+	{NULL, NULL}, /* Pq */
+	{NULL, NULL}, /* Qc */
+	{NULL, NULL}, /* Ql */
+	{NULL, NULL}, /* Qo */
+	{NULL, NULL}, /* Qq */
+	{NULL, NULL}, /* Re */
+	{NULL, NULL}, /* Rs */
+	{NULL, NULL}, /* Sc */
+	{NULL, NULL}, /* So */
+	{NULL, NULL}, /* Sq */
+	{NULL, NULL}, /* Sm */
+	{NULL, NULL}, /* Sx */
+	{NULL, NULL}, /* Sy */
+	{NULL, NULL}, /* Tn */
+	{NULL, NULL}, /* Ux */
+	{NULL, NULL}, /* Xc */
+	{NULL, NULL}, /* Xo */
+	{NULL, NULL}, /* Fo */ 
+	{NULL, NULL}, /* Fc */ 
+	{NULL, NULL}, /* Oo */
+	{NULL, NULL}, /* Oc */
+	{NULL, NULL}, /* Bk */
+	{NULL, NULL}, /* Ek */
+	{NULL, NULL}, /* Bt */
+	{NULL, NULL}, /* Hf */
+	{NULL, NULL}, /* Fr */
+	{NULL, NULL}, /* Ud */
+	{NULL, NULL}, /* Lb */
+	{NULL, NULL}, /* Lp */ 
+	{NULL, NULL}, /* Lk */ 
+	{NULL, NULL}, /* Mt */ 
+	{NULL, NULL}, /* Brq */ 
+	{NULL, NULL}, /* Bro */ 
+	{NULL, NULL}, /* Brc */ 
+	{NULL, NULL}, /* %C */ 
+	{NULL, NULL}, /* Es */ 
+	{NULL, NULL}, /* En */ 
+	{NULL, NULL}, /* Dx */ 
+	{NULL, NULL}, /* %Q */ 
+	{NULL, NULL}, /* br */
+	{NULL, NULL}, /* sp */ 
+};
+
+
+int
+html_mdoc(void *arg, const struct mdoc *m)
+{
+	struct html 	*h;
+
+	h = (struct html *)arg;
+
+	print_gen_doctype(h);
+	print_otag(h, TAG_HTML, 0, NULL);
+	print_mdoc(mdoc_meta(m), mdoc_node(m), h);
+	print_ctag(h, TAG_HTML);
+	printf("\n");
+	return(1);
+}
+
+
+int
+html_man(void *arg, const struct man *m)
+{
+	struct html	*h;
+
+	h = (struct html *)arg;
+
+	print_gen_doctype(h);
+	print_otag(h, TAG_HTML, 0, NULL);
+	print_man(man_meta(m), man_node(m), h);
+	print_ctag(h, TAG_HTML);
+	printf("\n");
+	return(1);
+}
+
+
+void *
+html_alloc(void)
+{
+
+	return(calloc(1, sizeof(struct html)));
+}
+
+
+void
+html_free(void *p)
+{
+
+	free(p);
+}
+
+
+static void
+print_mdoc(MDOC_ARGS)
+{
+
+	print_otag(h, TAG_HEAD, 0, NULL);
+	print_mdoc_head(m, n, h);
+	print_ctag(h, TAG_HEAD);
+	print_otag(h, TAG_BODY, 0, NULL);
+	print_mdoc_node(m, n, h);
+	print_ctag(h, TAG_BODY);
+}
+
+
+static void
+print_gen_head(struct html *h)
+{
+	struct htmlpair	 meta0[2];
+	struct htmlpair	 meta1[2];
+	struct htmlpair	 link[4];
+
+	meta0[0].key = ATTR_HTTPEQUIV;
+	meta0[0].val = "Content-Type";
+	meta0[1].key = ATTR_CONTENT;
+	meta0[1].val = "text/html; charest-utf-8";
+
+	meta1[0].key = ATTR_NAME;
+	meta1[0].val = "resource-type";
+	meta1[1].key = ATTR_CONTENT;
+	meta1[1].val = "document";
+
+	link[0].key = ATTR_REL;
+	link[0].val = "stylesheet";
+	link[1].key = ATTR_HREF;
+	link[1].val = "style.css";
+	link[2].key = ATTR_TYPE;
+	link[2].val = "text/css";
+	link[3].key = ATTR_MEDIA;
+	link[3].val = "all";
+
+	print_otag(h, TAG_META, 2, meta0);
+	print_otag(h, TAG_META, 2, meta1);
+	print_otag(h, TAG_LINK, 4, link);
+}
+
+
+static void
+print_mdoc_head(MDOC_ARGS)
+{
+
+	print_gen_head(h);
+	print_otag(h, TAG_TITLE, 0, NULL);
+	print_encode(m->title);
+	print_ctag(h, TAG_TITLE);
+}
+
+
+static int
+mdoc_root_pre(MDOC_ARGS)
+{
+	struct htmlpair	 div;
+
+	div.key = ATTR_CLASS;
+	div.val = "body";
+
+	print_otag(h, TAG_DIV, 1, &div);
+	return(1);
+}
+
+
+static void
+mdoc_root_post(MDOC_ARGS)
+{
+
+	print_ctag(h, TAG_DIV);
+}
+
+
+static int
+mdoc_ss_pre(MDOC_ARGS)
+{
+
+	if (MDOC_BODY == n->type)
+		print_otag(h, TAG_P, 0, NULL);
+	if (MDOC_HEAD == n->type)
+		print_otag(h, TAG_H2, 0, NULL);
+	return(1);
+}
+
+
+static void
+mdoc_ss_post(MDOC_ARGS)
+{
+
+	if (MDOC_BODY == n->type)
+		print_ctag(h, TAG_P);
+	if (MDOC_HEAD == n->type)
+		print_ctag(h, TAG_H2);
+}
+
+
+static int
+mdoc_pp_pre(MDOC_ARGS)
+{
+
+	print_otag(h, TAG_P, 0, NULL);
+	return(0);
+}
+
+
+static int
+mdoc_nd_pre(MDOC_ARGS)
+{
+
+	if (MDOC_BODY == n->type)
+		print_text(h, "--");
+	return(1);
+}
+
+
+static int
+mdoc_nm_pre(MDOC_ARGS)
+{
+	struct htmlpair	class;
+
+	class.key = ATTR_CLASS;
+	class.val = "name";
+
+	print_otag(h, TAG_SPAN, 1, &class);
+	if (NULL == n->child)
+		print_text(h, m->name);
+
+	return(1);
+}
+
+
+static void
+mdoc_nm_post(MDOC_ARGS)
+{
+
+	print_ctag(h, TAG_SPAN);
+}
+
+
+static int
+mdoc_sh_pre(MDOC_ARGS)
+{
+
+	if (MDOC_BODY == n->type)
+		print_otag(h, TAG_P, 0, NULL);
+	if (MDOC_HEAD == n->type)
+		print_otag(h, TAG_H1, 0, NULL);
+	return(1);
+}
+
+
+static void
+mdoc_sh_post(MDOC_ARGS)
+{
+
+	if (MDOC_BODY == n->type)
+		print_ctag(h, TAG_P);
+	if (MDOC_HEAD == n->type)
+		print_ctag(h, TAG_H1);
+}
+
+
+static void
+print_mdoc_node(MDOC_ARGS)
+{
+	int		 child;
+
+	child = 1;
+
+	switch (n->type) {
+	case (MDOC_ROOT):
+		child = mdoc_root_pre(m, n, h);
+		break;
+	case (MDOC_TEXT):
+		print_text(h, n->string);
+		break;
+	default:
+		if (mdocs[n->tok].pre)
+			child = (*mdocs[n->tok].pre)(m, n, h);
+		break;
+	}
+
+	if (child && n->child)
+		print_mdoc_node(m, n->child, h);
+
+	switch (n->type) {
+	case (MDOC_ROOT):
+		mdoc_root_post(m, n, h);
+		break;
+	case (MDOC_TEXT):
+		break;
+	default:
+		if (mdocs[n->tok].post)
+			(*mdocs[n->tok].post)(m, n, h);
+		break;
+	}
+
+	if (n->next)
+		print_mdoc_node(m, n->next, h);
+}
+
+
+static void
+print_man(MAN_ARGS)
+{
+
+	print_otag(h, TAG_HEAD, 0, NULL);
+	print_man_head(m, n, h);
+	print_ctag(h, TAG_HEAD);
+	print_otag(h, TAG_BODY, 0, NULL);
+	print_man_body(m, n, h);
+	print_ctag(h, TAG_BODY);
+}
+
+
+static void
+print_man_head(MAN_ARGS)
+{
+
+	print_gen_head(h);
+	print_otag(h, TAG_TITLE, 0, NULL);
+	print_encode(m->title);
+	print_ctag(h, TAG_TITLE);
+}
+
+
+static void
+print_man_body(MAN_ARGS)
+{
+}
+
+
+static void
+print_encode(const char *p)
+{
+
+	printf("%s", p); /* XXX */
+}
+
+
+static void
+print_otag(struct html *h, enum htmltag tag, 
+		int sz, const struct htmlpair *p)
+{
+	int		 i;
+
+	if ( ! (HTML_NOSPACE & h->flags))
+		if ( ! (HTML_BLOCK & htmltags[tag].flags))
+			printf(" ");
+
+	printf("<%s", htmltags[tag].name);
+	for (i = 0; i < sz; i++) {
+		printf(" %s=\"", htmlattrs[p[i].key]);
+		assert(p->val);
+		print_encode(p[i].val);
+		printf("\"");
+	}
+	printf(">");
+
+	h->flags |= HTML_NOSPACE;
+
+}
+
+
+/* ARGSUSED */
+static void
+print_ctag(struct html *h, enum htmltag tag)
+{
+	
+	printf("</%s>", htmltags[tag].name);
+	if (HTML_BLOCK & htmltags[tag].flags)
+		h->flags |= HTML_NOSPACE;
+}
+
+
+/* ARGSUSED */
+static void
+print_gen_doctype(struct html *h)
+{
+	
+	printf("<!DOCTYPE HTML PUBLIC \"%s\" \"%s\">\n", DOCTYPE, DTD);
+}
+
+
+static void
+print_text(struct html *h, const char *p)
+{
+
+	if (*p && 0 == *(p + 1))
+		switch (*p) {
+		case('.'):
+			/* FALLTHROUGH */
+		case(','):
+			/* FALLTHROUGH */
+		case(';'):
+			/* FALLTHROUGH */
+		case(':'):
+			/* FALLTHROUGH */
+		case('?'):
+			/* FALLTHROUGH */
+		case('!'):
+			/* FALLTHROUGH */
+		case(')'):
+			/* FALLTHROUGH */
+		case(']'):
+			/* FALLTHROUGH */
+		case('}'):
+			h->flags |= HTML_NOSPACE;
+		default:
+			break;
+		}
+
+	if ( ! (h->flags & HTML_NOSPACE))
+		printf(" ");
+	h->flags &= ~HTML_NOSPACE;
+
+	if (p)
+		print_encode(p);
+
+	if (*p && 0 == *(p + 1))
+		switch (*p) {
+		case('('):
+			/* FALLTHROUGH */
+		case('['):
+			/* FALLTHROUGH */
+		case('{'):
+			h->flags |= HTML_NOSPACE;
+		default:
+			break;
+		}
+}