httpd: simplify insane conf file parser

function                                             old     new   delta
bb_simplify_abs_path_inplace                           -      98     +98
parse_expr                                           824     832      +8
passwd_main                                         1025    1027      +2
evalvar                                             1374    1376      +2
parse_command                                       1463    1460      -3
bb_simplify_path                                     137      55     -82
parse_conf                                          1572    1422    -150
------------------------------------------------------------------------------
(add/remove: 3/2 grow/shrink: 3/3 up/down: 126/-251)         Total: -125 bytes

1 files changed, 19 insertions, 13 deletions

diff --git a/libbb/simplify_path.c b/libbb/simplify_path.c
index 367f1f0..f80e3e8 100644
--- a/libbb/simplify_path.c
+++ b/libbb/simplify_path.c
@@ -6,22 +6,13 @@
  *
  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
-
 #include "libbb.h"
 
-char* FAST_FUNC bb_simplify_path(const char *path)
+char* FAST_FUNC bb_simplify_abs_path_inplace(char *start)
 {
-	char *s, *start, *p;
+	char *s, *p;
 
-	if (path[0] == '/')
-		start = xstrdup(path);
-	else {
-		s = xrealloc_getcwd_or_warn(NULL);
-		start = concat_path_file(s, path);
-		free(s);
-	}
 	p = s = start;
-
 	do {
 		if (*p == '/') {
 			if (*s == '/') {	/* skip duplicate (or initial) slash */
@@ -47,7 +38,22 @@ char* FAST_FUNC bb_simplify_path(const char *path)
 	if ((p == start) || (*p != '/')) {	/* not a trailing slash */
 		++p;					/* so keep last character */
 	}
-	*p = 0;
+	*p = '\0';
+	return p;
+}
+
+char* FAST_FUNC bb_simplify_path(const char *path)
+{
+	char *s, *p;
+
+	if (path[0] == '/')
+		s = xstrdup(path);
+	else {
+		p = xrealloc_getcwd_or_warn(NULL);
+		s = concat_path_file(p, path);
+		free(p);
+	}
 
-	return start;
+	bb_simplify_abs_path_inplace(s);
+	return s;
 }