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1 files changed, 105 insertions, 0 deletions

diff --git a/macro.c b/macro.c
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index 00000000..20d0d569
--- /dev/null
+++ b/macro.c
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+/* $Id: macro.c,v 1.1 2008/12/12 10:11:10 kristaps Exp $ */
+/*
+ * Copyright (c) 2008 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 <stdlib.h>
+
+#include "roff.h"
+
+static int
+macro_args_next(struct rofftree *tree, int *pos, char *buf, char **v)
+{
+	int		 i;
+
+	if (0 == buf[*pos])
+		return(0);
+
+	if ('\"' == buf[*pos]) {
+		/* Syntax error: quotation marks not allowed. */
+		return(-1);
+	}
+
+	*v = &buf[*pos];
+
+	while (buf[*pos] && ! isspace(buf[*pos]))
+		(*pos)++;
+
+	if (buf[*pos + 1] && '\\' == buf[*pos]) {
+		/* Syntax error: escaped whitespace not allowed. */
+		return(-1);
+	}
+
+	buf[i] = 0;
+	return(1);
+}
+
+/*
+ * Parses the following:
+ *
+ *     .Xx foo bar baz ; foo "bar baz" ; ;
+ *         ^----------   ^----------
+ */
+static int
+macro_fl(struct rofftree *tree, int tok, int *pos, char *buf)
+{
+	int		  i, j, c, first; 
+	char		 *args[ROFF_MAXLINEARG];
+
+	first = *pos == 0;
+
+	for (j = 0; ; ) {
+		i = *pos;
+		c = macro_args_next(tree, *i, buf, args[j]);
+		if (-1 == c) 
+			return(0);
+		if (0 == c) 
+			break;
+
+		/* Break at the next command.  */
+
+		if (ROFF_MAX != (c = rofffindcallable(args[pos]))) {
+			if ( ! macro(tree, tok, argc, argv, i, p))
+				return(0);
+			if ( ! parse(tree, c, pos, args))
+				return(0);
+			break;
+		}
+
+		/* Continue if we're just words. */
+
+		if ( ! roffispunct(args[pos])) {
+			i++;
+			continue;
+		}
+
+		/* Break if there's only remaining punctuation. */
+
+		if (args[pos + 1] && roffispunct(args[pos + 1]))
+			break;
+
+		/* If there are remaining words, start anew. */
+
+		if ( ! macro(tree, tok, argc, argv, i, p))
+			return(0);
+
+		/* Spit out the punctuation. */
+
+		if ( ! word(tree, tok, *args++))
+			return(0);
+		i++;
+	}
+}