Cleanup error_list stuff a bit more.

- Remove reverse_error_list.
- Push messages on to the tail of the list.
- Move the print function in with the other error list functions.
- Indentation and variable name cleanups.

git-svn-id: http://opkg.googlecode.com/svn/trunk@238 e8e0d7a0-c8d9-11dd-a880-a1081c7ac358

7 files changed, 60 insertions, 84 deletions

diff --git a/libopkg/libopkg.c b/libopkg/libopkg.c
index 418a324..787a510 100644
--- a/libopkg/libopkg.c
+++ b/libopkg/libopkg.c
@@ -36,7 +36,7 @@ int default_opkg_message_callback(opkg_conf_t *conf, message_level_t level,
 	  return 0;
      } else {
           if ( level == OPKG_ERROR ){
-             push_error_list(&error_list, msg); 
+             push_error_list(msg); 
           } else
 	    printf("%s",msg);
      }
@@ -131,7 +131,8 @@ opkg_op (int argc, char *argv[])
 	args_deinit (&args);
 	if (err)
 	{
-		opkg_print_error_list (&opkg_conf);
+		print_error_list();
+		free_error_list();
 		return err;
 	}
 
diff --git a/libopkg/opkg.c b/libopkg/opkg.c
index 5ff0eb5..d6b6658 100644
--- a/libopkg/opkg.c
+++ b/libopkg/opkg.c
@@ -34,8 +34,6 @@
 
 #include <libbb/libbb.h>
 
-struct errlist* error_list;
-
 struct _opkg_t
 {
   args_t *args;
diff --git a/libopkg/opkg_cmd.c b/libopkg/opkg_cmd.c
index e7038c5..99ee64d 100644
--- a/libopkg/opkg_cmd.c
+++ b/libopkg/opkg_cmd.c
@@ -141,26 +141,6 @@ opkg_cmd_t *opkg_cmd_find(const char *name)
      return NULL;
 }
 
-void opkg_print_error_list (opkg_conf_t *conf)
-{
-  struct errlist *err = error_list;
-
-  if (err) {
-     reverse_error_list(&err);
-
-     printf ("Collected errors:\n");
-     /* Here we print the errors collected and free the list */
-     while (err != NULL) {
-           printf (" * %s", err->errmsg);
-           err = err->next;
-
-     }
-
-     free_error_list(&error_list);
-  }
-
-}
-
 int opkg_cmd_exec(opkg_cmd_t *cmd, opkg_conf_t *conf, int argc, const char **argv, void *userdata)
 {
 	int result;
@@ -169,11 +149,8 @@ int opkg_cmd_exec(opkg_cmd_t *cmd, opkg_conf_t *conf, int argc, const char **arg
 
 	result = (cmd->fun)(conf, argc, argv);
 
-        if ( result != 0 && !error_list) {
-           opkg_message(conf, OPKG_NOTICE, "An error occurred, return value: %d.\n", result);
-        }
-
-        opkg_print_error_list (conf);
+        print_error_list();
+	free_error_list();
 
 	p_userdata = NULL;
 	return result;
diff --git a/libopkg/opkg_cmd.h b/libopkg/opkg_cmd.h
index c597555..f512488 100644
--- a/libopkg/opkg_cmd.h
+++ b/libopkg/opkg_cmd.h
@@ -31,6 +31,4 @@ typedef struct opkg_cmd opkg_cmd_t;
 opkg_cmd_t *opkg_cmd_find(const char *name);
 int opkg_cmd_exec(opkg_cmd_t *cmd, opkg_conf_t *conf, int argc, 
                   const char **argv, void *userdata);
-void opkg_print_error_list (opkg_conf_t *conf);
-
 #endif
diff --git a/libopkg/opkg_error.h b/libopkg/opkg_error.h
index 43a5507..ec0d1c2 100644
--- a/libopkg/opkg_error.h
+++ b/libopkg/opkg_error.h
@@ -52,6 +52,4 @@ struct errlist {
     struct errlist * next;
 } ;
 
-extern struct errlist* error_list;
-
 #endif /* OPKG_ERROR_H */
diff --git a/libopkg/opkg_utils.c b/libopkg/opkg_utils.c
index f0ef051..92291c4 100644
--- a/libopkg/opkg_utils.c
+++ b/libopkg/opkg_utils.c
@@ -146,60 +146,64 @@ int line_is_blank(const char *line)
      return 1;
 }
 
+static struct errlist *error_list_head, *error_list_tail;
+
 /*
  * XXX: this function should not allocate memory as it may be called to
  *      print an error because we are out of memory.
  */
-void push_error_list(struct errlist ** errors, char * msg){
-  struct errlist *err_lst_tmp;
-
-  err_lst_tmp = calloc (1,  sizeof (struct errlist) );
-  if (err_lst_tmp == NULL) {
-    fprintf(stderr, "%s: calloc: %s\n", __FUNCTION__, strerror(errno));
-    return;
-  }
-
-  err_lst_tmp->errmsg = strdup(msg);
-  if (err_lst_tmp->errmsg == NULL) {
-    fprintf(stderr, "%s: strdup: %s\n", __FUNCTION__, strerror(errno));
-    free(err_lst_tmp);
-    return;
-  }
-
-  err_lst_tmp->next = *errors;
-  *errors = err_lst_tmp;
+void push_error_list(char * msg)
+{
+	struct errlist *e;
+
+	e = calloc(1,  sizeof(struct errlist));
+	if (e == NULL) {
+		fprintf(stderr, "%s: calloc: %s\n",
+				__FUNCTION__, strerror(errno));
+		return;
+	}
+
+	e->errmsg = strdup(msg);
+	if (e->errmsg == NULL) {
+		fprintf(stderr, "%s: strdup: %s\n",
+				__FUNCTION__, strerror(errno));
+		free(e);
+		return;
+	}
+
+	e->next = NULL;
+
+	if (error_list_head) {
+		error_list_tail->next = e;
+		error_list_tail = e;
+	} else {
+		error_list_head = error_list_tail = e;
+	}
 }
 
-
-void reverse_error_list(struct errlist **errors){
-   struct errlist *result=NULL;
-   struct errlist *current= *errors;
-   struct errlist *next;
-
-   while ( current != NULL ) {
-      next = current->next;
-      current->next=result;
-      result=current;
-      current=next;
-   }
-   *errors=result;
-
+void free_error_list(void)
+{
+	struct errlist *err, *err_tmp;
+
+	err = error_list_head;
+	while (err != NULL) {
+		free(err->errmsg);
+		err_tmp = err;
+		err = err->next;
+		free(err_tmp);
+	}
 }
 
-       
-void free_error_list(struct errlist **errors){
-struct errlist *err_tmp_lst;
-
-  err_tmp_lst = *errors;
-
-    while (err_tmp_lst != NULL) {
-      free(err_tmp_lst->errmsg);
-      err_tmp_lst = error_list->next;
-      free(*errors);
-      *errors = err_tmp_lst;
-    }
-
-
+void print_error_list (void)
+{
+	struct errlist *err = error_list_head;
+
+	if (err) {
+		printf ("Collected errors:\n");
+		/* Here we print the errors collected and free the list */
+		while (err != NULL) {
+			printf (" * %s", err->errmsg);
+			err = err->next;
+		}
+	}
 }
-
-       
diff --git a/libopkg/opkg_utils.h b/libopkg/opkg_utils.h
index ed9215b..a6c9eb0 100644
--- a/libopkg/opkg_utils.h
+++ b/libopkg/opkg_utils.h
@@ -21,9 +21,9 @@
 #include "pkg.h"
 #include "opkg_error.h"
 
-void push_error_list(struct errlist **errors,char * msg);
-void reverse_error_list(struct errlist **errors);
-void free_error_list(struct errlist **errors);
+void push_error_list(char * msg);
+void free_error_list(void);
+void print_error_list(void);
 
 long unsigned int get_available_blocks(char * filesystem);
 char **read_raw_pkgs_from_file(const char *file_name);