*: kill bb_get_last_path_component, replace with two functions

(one which strips trailing slash and one which does not)
wget: straighten out as a result of above change
   text    data     bss     dec     hex filename
   5056       1       0    5057    13c1 busybox.t4/networking/wget.o
   5022       0       0    5022    139e busybox.t5/networking/wget.o

1 files changed, 16 insertions, 29 deletions

diff --git a/networking/wget.c b/networking/wget.c
index 5feb539d5..86d6f00ec 100644
--- a/networking/wget.c
+++ b/networking/wget.c
@@ -12,11 +12,11 @@
 struct host_info {
         // May be used if we ever will want to free() all xstrdup()s...
         /* char *allocated; */
-        char    *path;
-        char    *user;
-        char    *host;
-        int      port;
-        smallint is_ftp;
+        const char *path;
+        const char *user;
+        char       *host;
+        int         port;
+        smallint    is_ftp;
 };
 
 
@@ -318,9 +318,7 @@ static void parse_url(char *src_url, struct host_info *h)
         p = strchr(h->host, '?'); if (!sp || (p && sp > p)) sp = p;
         p = strchr(h->host, '#'); if (!sp || (p && sp > p)) sp = p;
         if (!sp) {
-                /* must be writable because of bb_get_last_path_component() */
-                static char nullstr[] ALIGN1 = "";
-                h->path = nullstr;
+                h->path = "";
         } else if (*sp == '/') {
                 *sp = '\0';
                 h->path = sp + 1;
@@ -328,7 +326,7 @@ static void parse_url(char *src_url, struct host_info *h)
                 // http://busybox.net?login=john@doe is a valid URL
                 // memmove converts to:
                 // http:/busybox.nett?login=john@doe...
-                memmove(h->host-1, h->host, sp - h->host);
+                memmove(h->host - 1, h->host, sp - h->host);
                 h->host--;
                 sp[-1] = '\0';
                 h->path = sp;
@@ -497,31 +495,20 @@ int wget_main(int argc, char **argv)
                 }
         }
 
-        /* Guess an output filename */
+        /* Guess an output filename, if there was no -O FILE */
         if (!fname_out) {
-                // Dirty hack. Needed because bb_get_last_path_component
-                // will destroy trailing / by storing '\0' in last byte!
-                if (!last_char_is(target.path, '/')) {
-                        fname_out = bb_get_last_path_component(target.path);
-#if ENABLE_FEATURE_WGET_STATUSBAR
-                        curfile = fname_out;
-#endif
-                }
-                if (!fname_out || !fname_out[0]) {
-                        /* bb_get_last_path_component writes
-                         * to last '/' only. We don't have one here... */
+                fname_out = bb_get_last_path_component_nostrip(target.path);
+                /* handle "wget http://kernel.org//" */
+                if (fname_out[0] == '/' || !fname_out[0])
                         fname_out = (char*)"index.html";
-#if ENABLE_FEATURE_WGET_STATUSBAR
-                        curfile = fname_out;
-#endif
-                }
-                if (dir_prefix != NULL)
+                /* -P DIR is considered only if there was no -O FILE */
+                if (dir_prefix)
                         fname_out = concat_path_file(dir_prefix, fname_out);
+        }
 #if ENABLE_FEATURE_WGET_STATUSBAR
-        } else {
-                curfile = bb_get_last_path_component(fname_out);
+        curfile = bb_get_last_path_component_nostrip(fname_out);
 #endif
-        }
+
         /* Impossible?
         if ((opt & WGET_OPT_CONTINUE) && !fname_out)
                 bb_error_msg_and_die("cannot specify continue (-c) without a filename (-O)"); */