[distcc] Improve one error report

[Wayne Davison]

I noticed that if the user has an empty ~/.distcc/hosts file that the
error message complained about $DISTCC_HOSTS.  The attached patch
changes this to complain about the actual item being parsed.

..wayne..
-------------- next part --------------
Index: src/distcc.h
--- src/distcc.h	5 May 2003 08:40:25 -0000	1.96
+++ src/distcc.h	21 May 2003 21:56:28 -0000
@@ -125,7 +125,7 @@
 /* hosts.c */
 int dcc_parse_hosts_env(struct dcc_hostdef **ret_list,
                         int *ret_nhosts);
-int dcc_parse_hosts(const char *where,
+int dcc_parse_hosts(const char *where, const char *source_name,
                     struct dcc_hostdef **ret_list,
                     int *ret_nhosts);
 
Index: src/hostfile.c
--- src/hostfile.c	7 May 2003 01:50:45 -0000	1.4
+++ src/hostfile.c	21 May 2003 21:56:28 -0000
@@ -60,7 +60,7 @@
     if ((ret = dcc_load_file(fname, &body)) != 0)
         return ret;
 
-    ret = dcc_parse_hosts(body, ret_list, ret_nhosts);
+    ret = dcc_parse_hosts(body, fname, ret_list, ret_nhosts);
 
     free(body);
 
Index: src/hosts.c
--- src/hosts.c	21 May 2003 05:54:52 -0000	1.40
+++ src/hosts.c	21 May 2003 21:56:28 -0000
@@ -115,7 +115,7 @@
 
     if ((env = getenv("DISTCC_HOSTS")) != NULL) {
         rs_trace("read hosts from environment");
-        return dcc_parse_hosts(env, ret_list, ret_nhosts);
+        return dcc_parse_hosts(env, "$DISTCC_HOSTS", ret_list, ret_nhosts);
     }
 
     /* ~/.distcc/hosts */
@@ -266,7 +266,7 @@
  * @return 0 if parsed successfully; nonzero if there were any errors,
  * or if no hosts were defined.
  **/
-int dcc_parse_hosts(const char *where,
+int dcc_parse_hosts(const char *where, const char *source_name,
                     struct dcc_hostdef **ret_list,
                     int *ret_nhosts)
 {
@@ -349,7 +349,7 @@
     if (*ret_nhosts) {
         return 0;
     } else {
-        rs_log_warning("$DISTCC_HOSTS is empty; can't distribute work"); 
+        rs_log_warning("%s contained no hosts; can't distribute work", source_name); 
         return EXIT_BAD_HOSTSPEC;
     }
 }