===================================================================
RCS file: /cvs/mandoc/Attic/mdocml.c,v
retrieving revision 1.40
retrieving revision 1.50
diff -u -p -r1.40 -r1.50
--- mandoc/Attic/mdocml.c	2009/01/12 12:52:21	1.40
+++ mandoc/Attic/mdocml.c	2009/01/20 12:51:28	1.50
@@ -1,4 +1,4 @@
-/* $Id: mdocml.c,v 1.40 2009/01/12 12:52:21 kristaps Exp $ */
+	/* $Id: mdocml.c,v 1.50 2009/01/20 12:51:28 kristaps Exp $ */
 /*
  * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
  *
@@ -30,37 +30,50 @@
 
 #include "mdoc.h"
 
-#define	MD_LINE_SZ	(256)
+#define	xfprintf	(void)fprintf
 
+#define	MD_LINE_SZ	(256)		/* Max input line size. */
+
+/* TODO: have a struct for each transformer. */
+
+typedef	int		(*mdocprint)(const struct mdoc_node *);
+
+
 struct	md_parse {
-	int		 warn;
-#define	MD_WARN_ALL	(1 << 0)
-#define	MD_WARN_ERR	(1 << 1)
-	int		 dbg;
-	struct mdoc	*mdoc;
-	char		*buf;
-	u_long		 bufsz;
-	char		*name;
-	int		 fd;
-	int		 lnn;
-	char		*line;
+	int		  warn;		/* Warning flags. */
+#define	MD_WARN_SYNTAX	 (1 << 0)	/* Show syntax warnings. */
+#define	MD_WARN_COMPAT	 (1 << 1)	/* Show compat warnings. */
+#define	MD_WARN_ALL	 (0x03)		/* Show all warnings. */
+#define	MD_WARN_ERR	 (1 << 2)	/* Make warnings->errors. */
+	int		  dbg;		/* Debug level. */
+	struct mdoc	 *mdoc;		/* Active parser. */
+	char		 *buf;		/* Input buffer. */
+	u_long		  bufsz;	/* Input buffer size. */
+	char		 *name;		/* Input file name. */
+	int		  fd;		/* Input file desc. */
+	mdocprint	  print;	/* Node-print function. */
 };
 
-static	void		 usage(void);
+extern	char	 	 *__progname;
 
-static	int		 parse_begin(struct md_parse *);
-static	int		 parse_leave(struct md_parse *, int);
-static	int		 io_begin(struct md_parse *);
-static	int		 io_leave(struct md_parse *, int);
-static	int		 buf_begin(struct md_parse *);
-static	int		 buf_leave(struct md_parse *, int);
+extern	int		  treeprint(const struct mdoc_node *);
 
-static	int		 msg_err(void *, int, int, enum mdoc_err);
-static	int		 msg_warn(void *, int, int, enum mdoc_warn);
-static	void		 msg_msg(void *, int, int, const char *);
+static	void		  usage(void);
 
+static	int		  parse_begin(struct md_parse *);
+static	int		  parse_leave(struct md_parse *, int);
+static	int		  io_begin(struct md_parse *);
+static	int		  io_leave(struct md_parse *, int);
+static	int		  buf_begin(struct md_parse *);
+static	int		  buf_leave(struct md_parse *, int);
+
+static	void		  msg_msg(void *, int, int, const char *);
+static	int		  msg_err(void *, int, int, const char *);
+static	int		  msg_warn(void *, int, int, 
+				enum mdoc_warn, const char *);
+
 #ifdef __linux__
-extern	int		 getsubopt(char **, char *const *, char **);
+extern	int		  getsubopt(char **, char *const *, char **);
 #endif
 
 int
@@ -68,18 +81,26 @@ main(int argc, char *argv[])
 {
 	int		 c;
 	struct md_parse	 parser;
-	char		*opts, *v;
+	char		*opts, *v, *filter;
 #define ALL     	 0
-#define ERROR     	 1
-	char		*toks[] = { "all", "error", NULL };
+#define COMPAT     	 1
+#define SYNTAX     	 2
+#define ERROR     	 3
+	char		*toks[] = { "all", "compat", "syntax", 
+				    "error", NULL };
 
 	extern char	*optarg;
 	extern int	 optind;
 
+	filter = NULL;
+
 	(void)memset(&parser, 0, sizeof(struct md_parse));
 
-	while (-1 != (c = getopt(argc, argv, "vW:")))
+	while (-1 != (c = getopt(argc, argv, "f:vW:")))
 		switch (c) {
+		case ('f'):
+			filter = optarg;
+			break;
 		case ('v'):
 			parser.dbg++;
 			break;
@@ -90,6 +111,12 @@ main(int argc, char *argv[])
 				case (ALL):
 					parser.warn |= MD_WARN_ALL;
 					break;
+				case (COMPAT):
+					parser.warn |= MD_WARN_COMPAT;
+					break;
+				case (SYNTAX):
+					parser.warn |= MD_WARN_SYNTAX;
+					break;
 				case (ERROR):
 					parser.warn |= MD_WARN_ERR;
 					break;
@@ -110,6 +137,11 @@ main(int argc, char *argv[])
 	if (1 == argc)
 		parser.name = *argv++;
 
+	if (filter) {
+		if (0 == strcmp(filter, "tree"))
+			parser.print = treeprint;
+	}
+
 	if ( ! io_begin(&parser))
 		return(EXIT_FAILURE);
 
@@ -178,82 +210,6 @@ buf_begin(struct md_parse *p)
 }
 
 
-static void
-print_node(const struct mdoc_node *n, int indent)
-{
-	const char	 *p, *t;
-	int		  i, j;
-	size_t		  argc, sz;
-	char		**params;
-	struct mdoc_arg	 *argv;
-
-	argv = NULL;
-	argc = 0;
-	params = NULL;
-	sz = 0;
-
-	/* FIXME: put parts of this in util.c. */
-	switch (n->type) {
-	case (MDOC_TEXT):
-		assert(NULL == n->child);
-		p = n->data.text.string;
-		t = "text";
-		break;
-	case (MDOC_BODY):
-		p = mdoc_macronames[n->tok];
-		t = "block-body";
-		break;
-	case (MDOC_HEAD):
-		p = mdoc_macronames[n->tok];
-		t = "block-head";
-		break;
-	case (MDOC_TAIL):
-		p = mdoc_macronames[n->tok];
-		t = "block-tail";
-		break;
-	case (MDOC_ELEM):
-		p = mdoc_macronames[n->tok];
-		t = "element";
-		argv = n->data.elem.argv;
-		argc = n->data.elem.argc;
-		break;
-	case (MDOC_BLOCK):
-		p = mdoc_macronames[n->tok];
-		t = "block";
-		argv = n->data.block.argv;
-		argc = n->data.block.argc;
-		break;
-	case (MDOC_ROOT):
-		p = "root";
-		t = "root";
-		break;
-	default:
-		abort();
-		/* NOTREACHED */
-	}
-
-	for (i = 0; i < indent; i++)
-		(void)printf("    ");
-	(void)printf("%s (%s)", p, t);
-
-	for (i = 0; i < (int)argc; i++) {
-		(void)printf(" -%s", mdoc_argnames[argv[i].arg]);
-		for (j = 0; j < (int)argv[i].sz; j++)
-			(void)printf(" \"%s\"", argv[i].value[j]);
-	}
-
-	for (i = 0; i < (int)sz; i++)
-		(void)printf(" \"%s\"", params[i]);
-
-	(void)printf(" %d:%d\n", n->line, n->pos);
-
-	if (n->child)
-		print_node(n->child, indent + 1);
-	if (n->next)
-		print_node(n->next, indent);
-}
-
-
 static int
 parse_leave(struct md_parse *p, int code)
 {
@@ -264,8 +220,8 @@ parse_leave(struct md_parse *p, int code)
 
 	if ( ! mdoc_endparse(p->mdoc))
 		code = 0;
-	if ((n = mdoc_result(p->mdoc)))
-		print_node(n, 0);
+	if (p->print && (n = mdoc_node(p->mdoc)))
+		(*p->print)(n);
 
 	mdoc_free(p->mdoc);
 
@@ -278,8 +234,9 @@ parse_begin(struct md_parse *p)
 {
 	ssize_t		 sz, i;
 	size_t		 pos;
-	char		 line[256], sv[256];
+	char		 line[MD_LINE_SZ];
 	struct mdoc_cb	 cb;
+	int		 lnn;
 
 	cb.mdoc_err = msg_err;
 	cb.mdoc_warn = msg_warn;
@@ -288,10 +245,7 @@ parse_begin(struct md_parse *p)
 	if (NULL == (p->mdoc = mdoc_alloc(p, &cb)))
 		return(parse_leave(p, 0));
 
-	p->lnn = 1;
-	p->line = sv;
-
-	for (pos = 0; ; ) {
+	for (lnn = 1, pos = 0; ; ) {
 		if (-1 == (sz = read(p->fd, p->buf, p->bufsz))) {
 			warn("%s", p->name);
 			return(parse_leave(p, 0));
@@ -301,21 +255,19 @@ parse_begin(struct md_parse *p)
 		for (i = 0; i < sz; i++) {
 			if ('\n' != p->buf[i]) {
 				if (pos < sizeof(line)) {
-					sv[(int)pos] = p->buf[(int)i];
-					line[(int)pos++] = 
-						p->buf[(int)i];
+					line[(int)pos++] = p->buf[(int)i];
 					continue;
 				}
 				warnx("%s: line %d too long", 
-						p->name, p->lnn);
+						p->name, lnn);
 				return(parse_leave(p, 0));
 			}
 	
-			line[(int)pos] = sv[(int)pos] = 0;
-			if ( ! mdoc_parseln(p->mdoc, p->lnn, line))
+			line[(int)pos] = 0;
+			if ( ! mdoc_parseln(p->mdoc, lnn, line))
 				return(parse_leave(p, 0));
 
-			p->lnn++;
+			lnn++;
 			pos = 0;
 		}
 	}
@@ -325,123 +277,14 @@ parse_begin(struct md_parse *p)
 
 
 static int
-msg_err(void *arg, int line, int col, enum mdoc_err type)
+msg_err(void *arg, int line, int col, const char *msg)
 {
-	char		 *lit;
 	struct md_parse	 *p;
 
 	p = (struct md_parse *)arg;
 
-	lit = NULL;
-
-	switch (type) {
-	case (ERR_SYNTAX_NOTEXT):
-		lit = "syntax: context-free text disallowed";
-		break;
-	case (ERR_SYNTAX_QUOTE):
-		lit = "syntax: disallowed argument quotation";
-		break;
-	case (ERR_SYNTAX_UNQUOTE):
-		lit = "syntax: unterminated quotation";
-		break;
-	case (ERR_SYNTAX_WS):
-		lit = "syntax: whitespace in argument";
-		break;
-	case (ERR_SYNTAX_ARGFORM):
-		lit = "syntax: macro arguments malformed";
-		break;
-	case (ERR_SYNTAX_NOPUNCT):
-		lit = "syntax: macro doesn't understand punctuation";
-		break;
-	case (ERR_SYNTAX_ARG):
-		lit = "syntax: unknown argument for macro";
-		break;
-	case (ERR_SCOPE_BREAK):
-		/* Which scope is broken? */
-		lit = "scope: macro breaks prior explicit scope";
-		break;
-	case (ERR_SCOPE_NOCTX):
-		lit = "scope: closure macro has no context";
-		break;
-	case (ERR_SCOPE_NONEST):
-		lit = "scope: macro may not be nested in the current context";
-		break;
-	case (ERR_MACRO_NOTSUP):
-		lit = "macro not supported";
-		break;
-	case (ERR_MACRO_NOTCALL):
-		lit = "macro not callable";
-		break;
-	case (ERR_SEC_PROLOGUE):
-		lit = "macro cannot be called in the prologue";
-		break;
-	case (ERR_SEC_NPROLOGUE):
-		lit = "macro called outside of prologue";
-		break;
-	case (ERR_ARGS_EQ0):
-		lit = "macro expects zero arguments";
-		break;
-	case (ERR_ARGS_EQ1):
-		lit = "macro expects one argument";
-		break;
-	case (ERR_ARGS_GE1):
-		lit = "macro expects one or more arguments";
-		break;
-	case (ERR_ARGS_LE2):
-		lit = "macro expects two or fewer arguments";
-		break;
-	case (ERR_ARGS_LE8):
-		lit = "macro expects eight or fewer arguments";
-		break;
-	case (ERR_ARGS_MANY):
-		lit = "macro has too many arguments";
-		break;
-	case (ERR_SEC_PROLOGUE_OO):
-		lit = "prologue macro is out-of-order";
-		break;
-	case (ERR_SEC_PROLOGUE_REP):
-		lit = "prologue macro repeated";
-		break;
-	case (ERR_SEC_NAME):
-		lit = "`NAME' section must be first";
-		break;
-	case (ERR_SYNTAX_ARGVAL):
-		lit = "syntax: expected value for macro argument";
-		break;
-	case (ERR_SYNTAX_ARGBAD):
-		lit = "syntax: invalid value(s) for macro argument";
-		break;
-	case (ERR_SYNTAX_ARGMISS):
-		lit = "syntax: missing required argument(s) for macro";
-		break;
-	case (ERR_SYNTAX_ARGMANY):
-		lit = "syntax: too many values for macro argument";
-		break;
-	case (ERR_SYNTAX_CHILDBAD):
-		lit = "syntax: invalid child for parent macro";
-		break;
-	case (ERR_SYNTAX_PARENTBAD):
-		lit = "syntax: invalid parent for macro";
-		break;
-	case (ERR_SYNTAX_CHILDHEAD):
-		lit = "syntax: expected only block-header section";
-		break;
-	case (ERR_SYNTAX_CHILDBODY):
-		lit = "syntax: expected only a block-body section";
-		break;
-	case (ERR_SYNTAX_EMPTYHEAD):
-		lit = "syntax: block-header section may not be empty";
-		break;
-	case (ERR_SYNTAX_EMPTYBODY):
-		lit = "syntax: block-body section may not be empty";
-		break;
-	default:
-		abort();
-		/* NOTREACHED */
-	}
-
-	(void)fprintf(stderr, "%s:%d: error: %s (column %d)\n", 
-			p->name, line, lit, col);
+	xfprintf(stderr, "%s:%d: error: %s (column %d)\n", 
+			p->name, line, msg, col);
 	return(0);
 }
 
@@ -453,99 +296,50 @@ msg_msg(void *arg, int line, int col, const char *msg)
 
 	p = (struct md_parse *)arg;
 
-	if (p->dbg < 2)
+	if (0 == p->dbg)
 		return;
 
-	(void)printf("%s:%d: %s (column %d)\n", 
+	xfprintf(stderr, "%s:%d: debug: %s (column %d)\n", 
 			p->name, line, msg, col);
 }
 
 
 static int
-msg_warn(void *arg, int line, int col, enum mdoc_warn type)
+msg_warn(void *arg, int line, int col, 
+		enum mdoc_warn type, const char *msg)
 {
-	char		 *lit;
 	struct md_parse	 *p;
-	extern char	 *__progname;
 
 	p = (struct md_parse *)arg;
 
-	if ( ! (p->warn & MD_WARN_ALL))
-		return(1);
-
-	lit = NULL;
-
 	switch (type) {
-	case (WARN_SYNTAX_WS_EOLN):
-		lit = "syntax: whitespace at end-of-line";
-		break;
-	case (WARN_SYNTAX_QUOTED):
-		lit = "syntax: quotation mark starting string";
-		break;
-	case (WARN_SYNTAX_MACLIKE):
-		lit = "syntax: macro-like argument";
-		break;
-	case (WARN_SYNTAX_ARGLIKE):
-		lit = "syntax: argument-like value";
-		break;
-	case (WARN_SYNTAX_EMPTYBODY):
-		lit = "syntax: macro suggests non-empty block-body section";
-		break;
-	case (WARN_SYNTAX_EMPTYHEAD):
-		lit = "syntax: macro suggests non-empty block-head section";
-		break;
-	case (WARN_SYNTAX_NOBODY):
-		lit = "syntax: macro suggests empty block-body section";
-		break;
-	case (WARN_SEC_OO):
-		lit = "section is out of conventional order";
-		break;
-	case (WARN_SEC_REP):
-		lit = "section repeated";
-		break;
-	case (WARN_ARGS_GE1):
-		lit = "macro suggests one or more arguments";
-		break;
-	case (WARN_ARGS_EQ0):
-		lit = "macro suggests zero arguments";
-		break;
-	case (WARN_IGN_AFTER_BLK):
-		lit = "ignore: macro ignored after block macro";
-		break;
-	case (WARN_IGN_OBSOLETE):
-		lit = "ignore: macro is obsolete";
-		break;
-	case (WARN_IGN_BEFORE_BLK):
-		lit = "ignore: macro before block macro ignored";
-		break;
-	case (WARN_COMPAT_TROFF):
-		lit = "compat: macro behaves differently in troff and nroff";
-		break;
-	default:
-		abort();
-		/* NOTREACHED */
+	case (WARN_COMPAT):
+		if (p->warn & MD_WARN_COMPAT)
+			break;
+		return(1);
+	case (WARN_SYNTAX):
+		if (p->warn & MD_WARN_SYNTAX)
+			break;
+		return(1);
 	}
 
+	xfprintf(stderr, "%s:%d: warning: %s (column %d)\n", 
+			p->name, line, msg, col);
 
-	(void)fprintf(stderr, "%s:%d: warning: %s (column %d)\n", 
-			p->name, line, lit, col);
+	if ( ! (p->warn & MD_WARN_ERR))
+		return(1);
 
-	if (p->warn & MD_WARN_ERR) {
-		(void)fprintf(stderr, "%s: considering warnings as "
-				"errors\n", __progname);
-		return(0);
-	}
-
-	return(1);
+	xfprintf(stderr, "%s: considering warnings as errors\n", 
+			__progname);
+	return(0);
 }
 
 
 static void
 usage(void)
 {
-	extern char	*__progname;
 
-	(void)fprintf(stderr, "usage: %s [-v] [-Wwarn...] [infile]\n",
-			__progname);
+	xfprintf(stderr, "usage: %s [-v] [-Wwarn...] [-ffilter] "
+			"[infile]\n", __progname);
 }