Have exprcomp() accept a string instead of an array-pointer. Also, collapse

the arguments in apropos(1) into a single string passed to exprcomp().  Ok
schwarze@.

1 files changed, 29 insertions, 2 deletions

diff --git a/apropos.c b/apropos.c
index 6ed6f64c..a50b1a5e 100644
--- a/apropos.c
+++ b/apropos.c
@@ -1,4 +1,4 @@
-/*	$Id: apropos.c,v 1.12 2011/11/13 11:10:27 schwarze Exp $ */
+/*	$Id: apropos.c,v 1.13 2011/11/14 10:07:06 kristaps Exp $ */
 /*
  * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
  *
@@ -14,6 +14,10 @@
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include <assert.h>
 #include <getopt.h>
 #include <limits.h>
@@ -34,6 +38,8 @@ int
 main(int argc, char *argv[])
 {
 	int		 ch;
+	size_t		 sz;
+	char		*buf;
 	struct opts	 opts;
 	struct expr	*e;
 	extern int	 optind;
@@ -66,11 +72,32 @@ main(int argc, char *argv[])
 	if (0 == argc) 
 		return(EXIT_SUCCESS);
 
-	if (NULL == (e = exprcomp(argc, argv))) {
+	/* 
+	 * Collapse expressions into a single string.  
+	 * First count up the contained strings, adding a space at the
+	 * end of each (plus nil-terminator).  Then merge.
+	 */
+
+	for (sz = 0, ch = 0; ch < argc; ch++)
+		sz += strlen(argv[ch]) + 1;
+
+	buf = mandoc_malloc(++sz);
+
+	for (*buf = '\0', ch = 0; ch < argc; ch++) {
+		strlcat(buf, argv[ch], sz);
+		strlcat(buf, " ", sz);
+	}
+
+	buf[sz - 2] = '\0';
+
+	if (NULL == (e = exprcomp(buf))) {
 		fprintf(stderr, "Bad expression\n");
+		free(buf);
 		return(EXIT_FAILURE);
 	}
 
+	free(buf);
+
 	/*
 	 * Configure databases.
 	 * The keyword database is a btree that allows for duplicate