Added xbps_callback_array_iter() and use it in xbps-bin to list missing pkgdeps.

bin/xbps-bin/install.c

@@ -50,26 +50,21 @@ struct transaction {
 static int
 show_missing_dep_cb(prop_object_t obj, void *arg, bool *loop_done)
 {
-	const char *reqpkg;
-
         (void)arg;
         (void)loop_done;
 
-	reqpkg = prop_string_cstring_nocopy(obj);
-	if (reqpkg == NULL)
-		return EINVAL;
+	fprintf(stderr, "  * Missing binary package for: %s\n",
+	    prop_string_cstring_nocopy(obj));
 
-	fprintf(stderr, "  * Missing binary package for: %s\n", reqpkg);
 	return 0;
 }
 
 static void
-show_missing_deps(prop_dictionary_t d)
+show_missing_deps(prop_array_t a)
 {
 	fprintf(stderr,
 	    "xbps-bin: unable to locate some required packages:\n");
-	(void)xbps_callback_array_iter_in_dict(d, "missing_deps",
-	    show_missing_dep_cb, NULL);
+	(void)xbps_callback_array_iter(a, show_missing_dep_cb, NULL);
 }
 
 static int
@@ -644,7 +639,7 @@ xbps_exec_transaction(bool yes)
 		if (errno == ENODEV) {
 			/* missing packages */
 			array = xbps_transaction_missingdeps_get();
-			show_missing_deps(trans->dict);
+			show_missing_deps(array);
 			goto out;
 		}
 		xbps_dbg_printf("Empty transaction dictionary: %s\n",

include/xbps_api.h

@@ -53,7 +53,7 @@
  * @def XBPS_RELVER
  * Current library release date.
  */
-#define XBPS_RELVER		"20110124"
+#define XBPS_RELVER		"20110125"
 
 /** 
  * @def XBPS_META_PATH
@@ -343,6 +343,22 @@ bool xbps_add_obj_to_dict(prop_dictionary_t dict,
  */
 bool xbps_add_obj_to_array(prop_array_t array, prop_object_t obj);
 
+/**
+ * Executes a function callback specified in \a fn with \a arg paassed
+ * as its argument into they array \a array.
+ *
+ * @param[in] array Proplib array to iterate.
+ * @param[in] fn Function callback to run on every object in the array.
+ * While running the function callback, the hird parameter (a pointer to
+ * a boolean) can be set to true to stop immediately the loop.
+ * @param[in] arg Argument to be passed to the function callback.
+ *
+ * @return 0 on success, otherwise an errno value is set appropiately.
+ */
+int xbps_callback_array_iter(prop_array_t array,
+			     int (*fn)(prop_object_t, void *, bool *),
+			     void *arg);
+
 /**
  * Executes a function callback into the array associated with key \a key,
  * contained in a proplib dictionary.

lib/plist.c

@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2008-2010 Juan Romero Pardines.
+ * Copyright (c) 2008-2011 Juan Romero Pardines.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -76,7 +76,35 @@ xbps_add_obj_to_array(prop_array_t array, prop_object_t obj)
 }
 
 int
-xbps_callback_array_iter_in_dict(prop_dictionary_t dict, const char *key,
+xbps_callback_array_iter(prop_array_t array,
+			 int (*fn)(prop_object_t, void *, bool *),
+			 void *arg)
+{
+	prop_object_t obj;
+	prop_object_iterator_t iter;
+	int rv = 0;
+	bool loop_done = false;
+
+	assert(array != NULL);
+	assert(fn != NULL);
+
+	iter = prop_array_iterator(array);
+	if (iter == NULL)
+		return ENOMEM;
+
+	while ((obj = prop_object_iterator_next(iter)) != NULL) {
+		rv = (*fn)(obj, arg, &loop_done);
+		if (rv != 0 || loop_done)
+			break;
+	}
+	prop_object_iterator_release(iter);
+
+	return rv;
+}
+
+int
+xbps_callback_array_iter_in_dict(prop_dictionary_t dict,
+				 const char *key,
 				 int (*fn)(prop_object_t, void *, bool *),
 				 void *arg)
 {
@@ -106,7 +134,9 @@ xbps_callback_array_iter_in_dict(prop_dictionary_t dict, const char *key,
 
 int
 xbps_callback_array_iter_reverse_in_dict(prop_dictionary_t dict,
-    const char *key, int (*fn)(prop_object_t, void *, bool *), void *arg)
+			const char *key,
+			int (*fn)(prop_object_t, void *, bool *),
+			void *arg)
 {
 	prop_array_t array;
 	prop_object_t obj;