Abstract ml/mlg/html/xml.

1 files changed, 45 insertions, 563 deletions

diff --git a/xml.c b/xml.c
index 8bac4389..63737563 100644
--- a/xml.c
+++ b/xml.c
@@ -16,295 +16,98 @@
  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  * PERFORMANCE OF THIS SOFTWARE.
  */
-#include <sys/param.h>
-
-#include <assert.h>
-#include <ctype.h>
-#include <err.h>
-#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include "libmdocml.h"
 #include "private.h"
+#include "ml.h"
 
-#define	COLUMNS		 72
-
-enum	md_ns {
-	MD_NS_BLOCK,
-	MD_NS_INLINE,
-	MD_NS_DEFAULT
-};
-
-enum	md_tok {
-	MD_BLKIN,		/* Controls spacing. */
-	MD_BLKOUT,
-	MD_IN,
-	MD_OUT,
-	MD_TEXT
-};
-
-struct	md_xml {
-	const struct md_args	*args;
-	const struct md_rbuf	*rbuf;
-
-	struct md_mbuf	*mbuf;
-	struct rofftree	*tree;
-	size_t		 indent;
-	size_t		 pos;
-	enum md_tok	 last;
-	int		 flags;
-#define	MD_LITERAL	(1 << 0) /* TODO */
-#define	MD_OVERRIDE_ONE	(1 << 1)
-#define	MD_OVERRIDE_ALL	(1 << 2)
-};
-
-static	void		 roffmsg(void *arg, enum roffmsg, 
-				const char *, const char *, char *);
-static	int		 roffhead(void *);
-static	int		 rofftail(void *);
-static	int		 roffin(void *, int, int *, char **);
-static	int		 roffdata(void *, int, char *);
-static	int		 roffout(void *, int);
-static	int		 roffblkin(void *, int, int *, char **);
-static	int		 roffblkout(void *, int);
-static	int		 roffspecial(void *, int, int *, char **, char **);
-
-static	void		 mbuf_mode(struct md_xml *, enum md_ns);
-static	int		 mbuf_newline(struct md_xml *);
-static	int		 xml_indent(struct md_xml *);
-static	int		 mbuf_data(struct md_xml *, int, char *);
-static	int		 xml_nputstring(struct md_xml *, 
-				const char *, size_t);
-static	int		 xml_puts(struct md_xml *, const char *);
-static	int		 xml_nputs(struct md_xml *, 
-				const char *, size_t);
-static	int		 xml_begintag(struct md_xml *, const char *, 
-				enum md_ns, int *, char **);
-static	int		 xml_endtag(struct md_xml *, 
-				const char *, enum md_ns);
-
-#ifdef __linux__ /* FIXME: remove */
-static	size_t		  strlcat(char *, const char *, size_t);
-static	size_t		  strlcpy(char *, const char *, size_t);
-#endif
-
-
-static void
-mbuf_mode(struct md_xml *p, enum md_ns ns)
-{
-	p->flags &= ~MD_OVERRIDE_ONE;
-	p->last = ns;
-}
 
+static	ssize_t		xml_endtag(struct md_mbuf *, 
+				const struct md_args *, 
+				enum md_ns, int);
+static	ssize_t		xml_begintag(struct md_mbuf *, 
+				const struct md_args *, 
+				enum md_ns, int, 
+				const int *, const char **);
 
-static int
-xml_begintag(struct md_xml *p, const char *name, enum md_ns ns, 
-		int *argc, char **argv)
+static ssize_t 
+xml_begintag(struct md_mbuf *mbuf, const struct md_args *args, 
+		enum md_ns ns, int tok, 
+		const int *argc, const char **argv)
 {
-	char		 buf[64];
-	ssize_t		 sz;
 	size_t		 res;
 
+	res = 0;
+
 	switch (ns) {
 	case (MD_NS_BLOCK):
-		res = strlcpy(buf, "block:", sizeof(buf));
-		assert(res < sizeof(buf));
+		if ( ! ml_nputs(mbuf, "block:", 6, &res))
+			return(-1);
 		break;
 	case (MD_NS_INLINE):
-		res = strlcpy(buf, "inline:", sizeof(buf));
-		assert(res < sizeof(buf));
+		if ( ! ml_nputs(mbuf, "inline:", 7, &res))
+			return(-1);
 		break;
 	default:
-		*buf = 0;
-		break;
+		if ( ! ml_nputs(mbuf, "mbuf", 4, &res))
+			return(-1);
+		return((ssize_t)res);
 	}
 
-	res = strlcat(buf, name, sizeof(buf));
-	assert(res < sizeof(buf));
-
-	if (-1 == (sz = ml_begintag(p->mbuf, buf, argc, argv)))
-		return(0);
+	if ( ! ml_nputs(mbuf, toknames[tok], 
+				strlen(toknames[tok]), &res))
+		return(-1);
 
-	p->pos += sz;
-	return(1);
+	return((ssize_t)res);
 }
 
 
-static int
-xml_endtag(struct md_xml *p, const char *name, enum md_ns ns)
+static ssize_t 
+xml_endtag(struct md_mbuf *mbuf, const struct md_args *args, 
+		enum md_ns ns, int tok)
 {
-	char		 buf[64];
-	ssize_t		 sz;
 	size_t		 res;
 
+	res = 0;
+
 	switch (ns) {
 	case (MD_NS_BLOCK):
-		res = strlcpy(buf, "block:", sizeof(buf));
-		assert(res < sizeof(buf));
+		if ( ! ml_nputs(mbuf, "block:", 6, &res))
+			return(-1);
 		break;
 	case (MD_NS_INLINE):
-		res = strlcpy(buf, "inline:", sizeof(buf));
-		assert(res < sizeof(buf));
+		if ( ! ml_nputs(mbuf, "inline:", 7, &res))
+			return(-1);
 		break;
 	default:
-		*buf = 0;
-		break;
+		if ( ! ml_nputs(mbuf, "mbuf", 4, &res))
+			return(-1);
+		return((ssize_t)res);
 	}
 
-	res = strlcat(buf, name, sizeof(buf));
-	assert(res < sizeof(buf));
-
-	if (-1 == (sz = ml_endtag(p->mbuf, buf)))
-		return(0);
-
-	p->pos += sz;
-	return(1);
-}
-
-
-static int
-xml_nputstring(struct md_xml *p, const char *buf, size_t sz)
-{
-	ssize_t		 res;
-
-	if (-1 == (res = ml_nputstring(p->mbuf, buf, sz)))
-		return(0);
-	p->pos += res;
-	return(1);
-}
-
-
-static int
-xml_nputs(struct md_xml *p, const char *buf, size_t sz)
-{
-	ssize_t		 res;
-
-	if (-1 == (res = ml_nputs(p->mbuf, buf, sz)))
-		return(0);
-	p->pos += res;
-	return(1);
-}
-
-
-static int
-xml_puts(struct md_xml *p, const char *buf)
-{
-
-	return(xml_nputs(p, buf, strlen(buf)));
-}
-
-
-static int
-xml_indent(struct md_xml *p)
-{
-	ssize_t		 res;
-
-	if (-1 == (res = ml_indent(p->mbuf, p->indent)))
-		return(0);
-	p->pos += res;
-	return(1);
-}
-
-
-static int
-mbuf_newline(struct md_xml *p)
-{
-
-	if ( ! md_buf_putchar(p->mbuf, '\n'))
-		return(0);
-
-	p->pos = 0;
-	return(1);
-}
-
-
-static int
-mbuf_data(struct md_xml *p, int space, char *buf)
-{
-	size_t		 sz;
-	char		*bufp;
-
-	assert(p->mbuf);
-	assert(0 != p->indent);
-
-	if (MD_OVERRIDE_ONE & p->flags || MD_OVERRIDE_ALL & p->flags)
-		space = 0;
-
-	if (MD_LITERAL & p->flags)
-		return(xml_nputstring(p, buf, sizeof(buf)));
-
-	while (*buf) {
-		while (*buf && isspace(*buf))
-			buf++;
-
-		if (0 == *buf)
-			break;
-
-		bufp = buf;
-		while (*buf && ! isspace(*buf))
-			buf++;
-
-		if (0 != *buf)
-			*buf++ = 0;
-
-		sz = strlen(bufp);
+	if ( ! ml_nputs(mbuf, toknames[tok], 
+				strlen(toknames[tok]), &res))
+		return(-1);
 
-		if (0 == p->pos) {
-			if ( ! xml_indent(p))
-				return(0);
-			if ( ! xml_nputstring(p, bufp, sz))
-				return(0);
-			if (p->indent * MAXINDENT + sz >= COLUMNS)
-				if ( ! mbuf_newline(p))
-					return(0);
-			if ( ! (MD_OVERRIDE_ALL & p->flags))
-				space = 1;
-			continue;
-		}
-
-		if (space && sz + p->pos >= COLUMNS) {
-			if ( ! mbuf_newline(p))
-				return(0);
-			if ( ! xml_indent(p))
-				return(0);
-		} else if (space) {
-			if ( ! xml_nputs(p, " ", 1))
-				return(0);
-		}
-
-		if ( ! xml_nputstring(p, bufp, sz))
-			return(0);
-
-		if ( ! (MD_OVERRIDE_ALL & p->flags))
-			space = 1;
-	}
-
-	return(1);
+	return((ssize_t)res);
 }
 
 
 int
-md_line_xml(void *arg, char *buf)
+md_line_xml(void *data, char *buf)
 {
-	struct md_xml	*p;
 
-	p = (struct md_xml *)arg;
-	return(roff_engine(p->tree, buf));
+	return(mlg_line((struct md_mlg *)data, buf));
 }
 
 
 int
 md_exit_xml(void *data, int flush)
 {
-	int		 c;
-	struct md_xml	*p;
-
-	p = (struct md_xml *)data;
-	c = roff_free(p->tree, flush);
-	free(p);
 
-	return(c);
+	return(mlg_exit((struct md_mlg *)data, flush));
 }
 
 
@@ -312,328 +115,7 @@ void *
 md_init_xml(const struct md_args *args,
 		struct md_mbuf *mbuf, const struct md_rbuf *rbuf)
 {
-	struct roffcb	 cb;
-	struct md_xml	*p;
 
-	cb.roffhead = roffhead;
-	cb.rofftail = rofftail;
-	cb.roffin = roffin;
-	cb.roffout = roffout;
-	cb.roffblkin = roffblkin;
-	cb.roffblkout = roffblkout;
-	cb.roffspecial = roffspecial;
-	cb.roffmsg = roffmsg;
-	cb.roffdata = roffdata;
-
-	if (NULL == (p = calloc(1, sizeof(struct md_xml))))
-		err(1, "malloc");
-
-	p->args = args;
-	p->mbuf = mbuf;
-	p->rbuf = rbuf;
-
-	assert(mbuf);
-
-	if (NULL == (p->tree = roff_alloc(&cb, p))) {
-		free(p);
-		return(NULL);
-	}
-
-	return(p);
-}
-
-
-/* ARGSUSED */
-static int
-roffhead(void *arg)
-{
-	struct md_xml	*p;
-
-	assert(arg);
-	p = (struct md_xml *)arg;
-
-	if (-1 == xml_puts(p, "<?xml version=\"1.0\" "
-				"encoding=\"UTF-8\"?>\n"))
-		return(0);
-	if (-1 == xml_puts(p, "<mdoc xmlns:block=\"block\" "
-				"xmlns:special=\"special\" "
-				"xmlns:inline=\"inline\">"))
-		return(0);
-
-	p->indent++;
-	mbuf_mode(p, MD_BLKIN);
-	return(mbuf_newline(p));
-}
-
-
-static int
-rofftail(void *arg)
-{
-	struct md_xml	*p;
-
-	assert(arg);
-	p = (struct md_xml *)arg;
-
-	if (0 != p->pos && ! mbuf_newline(p))
-		return(0);
-
-	mbuf_mode(p, MD_BLKOUT);
-	if ( ! xml_endtag(p, "mdoc", MD_NS_DEFAULT))
-		return(0);
-	return(mbuf_newline(p));
+	return(mlg_alloc(args, rbuf, mbuf, xml_begintag, xml_endtag));
 }
 
-
-/* ARGSUSED */
-static int
-roffspecial(void *arg, int tok, int *argc, char **argv, char **more)
-{
-	struct md_xml	*p;
-
-	assert(arg);
-	p = (struct md_xml *)arg;
-
-	/* FIXME: this is completely ad hoc. */
-
-	switch (tok) {
-	case (ROFF_Ns):
-		p->flags |= MD_OVERRIDE_ONE;
-		break;
-	case (ROFF_Sm):
-		assert(*more);
-		if (0 == strcmp(*more, "on"))
-			p->flags |= MD_OVERRIDE_ALL;
-		else
-			p->flags &= ~MD_OVERRIDE_ALL;
-		break;
-	default:
-		break;
-	}
-
-	return(1);
-}
-
-
-static int
-roffblkin(void *arg, int tok, int *argc, char **argv)
-{
-	struct md_xml	*p;
-
-	assert(arg);
-	p = (struct md_xml *)arg;
-
-	if (0 != p->pos) {
-		if ( ! mbuf_newline(p))
-			return(0);
-		if ( ! xml_indent(p))
-			return(0);
-	} else if ( ! xml_indent(p))
-		return(0);
-
-	/* FIXME: xml won't like standards args (e.g., p1003.1-90). */
-
-	p->indent++;
-	mbuf_mode(p, MD_BLKIN);
-
-	if ( ! xml_begintag(p, toknames[tok], MD_NS_BLOCK,
-				argc, argv))
-		return(0);
-	return(mbuf_newline(p));
-}
-
-
-static int
-roffblkout(void *arg, int tok)
-{
-	struct md_xml	*p;
-
-	assert(arg);
-	p = (struct md_xml *)arg;
-
-	p->indent--;
-
-	if (0 != p->pos) {
-		if ( ! mbuf_newline(p))
-			return(0);
-		if ( ! xml_indent(p))
-			return(0);
-	} else if ( ! xml_indent(p))
-		return(0);
-
-	mbuf_mode(p, MD_BLKOUT);
-	if ( ! xml_endtag(p, toknames[tok], MD_NS_BLOCK))
-		return(0);
-	return(mbuf_newline(p));
-}
-
-
-static int
-roffin(void *arg, int tok, int *argc, char **argv)
-{
-	struct md_xml	*p;
-
-	assert(arg);
-	p = (struct md_xml *)arg;
-
-	if ( ! (MD_OVERRIDE_ONE & p->flags) && 
-			! (MD_OVERRIDE_ALL & p->flags) && 
-			p->pos + 11 > COLUMNS) 
-		if ( ! mbuf_newline(p))
-			return(0);
-
-	if (0 != p->pos && (MD_TEXT == p->last || MD_OUT == p->last)
-			&& ! (MD_OVERRIDE_ONE & p->flags)
-			&& ! (MD_OVERRIDE_ALL & p->flags))
-		if ( ! xml_nputs(p, " ", 1))
-			return(0);
-
-	if (0 == p->pos && ! xml_indent(p))
-		return(0);
-
-	mbuf_mode(p, MD_IN);
-	return(xml_begintag(p, toknames[tok], 
-				MD_NS_INLINE, argc, argv));
-}
-
-
-static int
-roffout(void *arg, int tok)
-{
-	struct md_xml	*p;
-
-	assert(arg);
-	p = (struct md_xml *)arg;
-
-	if (0 == p->pos && ! xml_indent(p))
-		return(0);
-
-	mbuf_mode(p, MD_OUT);
-	return(xml_endtag(p, toknames[tok], MD_NS_INLINE));
-}
-
-
-static void
-roffmsg(void *arg, enum roffmsg lvl, 
-		const char *buf, const char *pos, char *msg)
-{
-	char		*level;
-	struct md_xml	*p;
-
-	assert(arg);
-	p = (struct md_xml *)arg;
-
-	switch (lvl) {
-	case (ROFF_WARN):
-		if ( ! (MD_WARN_ALL & p->args->warnings))
-			return;
-		level = "warning";
-		break;
-	case (ROFF_ERROR):
-		level = "error";
-		break;
-	default:
-		abort();
-	}
-	
-	if (pos)
-		(void)fprintf(stderr, "%s:%zu: %s: %s (column %zu)\n", 
-				p->rbuf->name, p->rbuf->line, level, 
-				msg, pos - buf);
-	else
-		(void)fprintf(stderr, "%s: %s: %s\n", 
-				p->rbuf->name, level, msg);
-
-}
-
-
-static int
-roffdata(void *arg, int space, char *buf)
-{
-	struct md_xml	*p;
-
-	assert(arg);
-	p = (struct md_xml *)arg;
-	if ( ! mbuf_data(p, space, buf))
-		return(0);
-
-	mbuf_mode(p, MD_TEXT);
-	return(1);
-}
-
-
-#ifdef __linux /* FIXME: remove. */
-/*	$OpenBSD: strlcat.c,v 1.13 2005/08/08 08:05:37 espie Exp $	*/
-
-/*
- * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
- *
- * 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.
- */
-static size_t
-strlcat(char *dst, const char *src, size_t siz)
-{
-	char *d = dst;
-	const char *s = src;
-	size_t n = siz;
-	size_t dlen;
-
-	/* Find the end of dst and adjust bytes left but don't go past
-	 * end */
-	while (n-- != 0 && *d != '\0')
-		d++;
-	dlen = d - dst;
-	n = siz - dlen;
-
-	if (n == 0)
-		return(dlen + strlen(s));
-	while (*s != '\0') {
-		if (n != 1) {
-			*d++ = *s;
-			n--;
-		}
-		s++;
-	}
-	*d = '\0';
-
-	return(dlen + (s - src));	/* count does not include NUL */
-}
-
-
-static size_t
-strlcpy(char *dst, const char *src, size_t siz)
-{
-	char *d = dst;
-	const char *s = src;
-	size_t n = siz;
-
-	/* Copy as many bytes as will fit */
-	if (n != 0) {
-		while (--n != 0) {
-			if ((*d++ = *s++) == '\0')
-				break;
-		}
-	}
-
-	/* Not enough room in dst, add NUL and traverse rest of src */
-	if (n == 0) {
-		if (siz != 0)
-			*d = '\0';		/* NUL-terminate dst */
-		while (*s++)
-			;
-	}
-
-	return(s - src - 1);	/* count does not include NUL */
-}
-#endif /*__linux__*/