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Posted to commits@celix.apache.org by pn...@apache.org on 2015/11/03 10:09:37 UTC

[03/11] celix git commit: CELIX-230: * Updated all commands to use new structure and service registration. * Moved static global field to shell activator instance. * (Re)implemented getUsage and getDescription functions of the shell.

CELIX-230:
* Updated all commands to use new structure and service registration.
* Moved static global field to shell activator instance.
* (Re)implemented getUsage and getDescription functions of the shell.


Project: http://git-wip-us.apache.org/repos/asf/celix/repo
Commit: http://git-wip-us.apache.org/repos/asf/celix/commit/4d52743e
Tree: http://git-wip-us.apache.org/repos/asf/celix/tree/4d52743e
Diff: http://git-wip-us.apache.org/repos/asf/celix/diff/4d52743e

Branch: refs/heads/develop
Commit: 4d52743eee05782afd0cb8b1b3f9d2de7808d1aa
Parents: 595f3e9
Author: Alexander Broekhuis <a....@gmail.com>
Authored: Fri Mar 27 22:01:30 2015 +0100
Committer: Alexander Broekhuis <a....@gmail.com>
Committed: Fri Mar 27 22:01:30 2015 +0100

----------------------------------------------------------------------
 shell/CMakeLists.txt                  |  14 ++--
 shell/private/include/shell_private.h |   2 +-
 shell/private/src/activator.c         | 114 ++++++++++-----------------
 shell/private/src/help_command.c      |  44 +++--------
 shell/private/src/inspect_command.c   | 121 ++++++++++-------------------
 shell/private/src/install_command.c   |  49 +++---------
 shell/private/src/log_command.c       |  47 +++--------
 shell/private/src/ps_command.c        |   5 +-
 shell/private/src/shell.c             |  55 ++++++++++---
 shell/private/src/stop_command.c      |  34 +++-----
 shell/private/src/uninstall_command.c |  33 ++------
 shell/private/src/update_command.c    |  42 +++-------
 shell/public/include/shell.h          |   1 +
 13 files changed, 194 insertions(+), 367 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/celix/blob/4d52743e/shell/CMakeLists.txt
----------------------------------------------------------------------
diff --git a/shell/CMakeLists.txt b/shell/CMakeLists.txt
index 09777d3..66194ce 100644
--- a/shell/CMakeLists.txt
+++ b/shell/CMakeLists.txt
@@ -28,13 +28,13 @@ if (SHELL)
     	private/src/shell 
     	private/src/ps_command 
       private/src/start_command 
-      #private/src/stop_command
-      #private/src/install_command 
-      #private/src/update_command
-      #private/src/uninstall_command 
-      #private/src/log_command
-      #private/src/inspect_command
-      #private/src/help_command
+      private/src/stop_command
+      private/src/install_command
+      private/src/update_command
+      private/src/uninstall_command
+      private/src/log_command
+      private/src/inspect_command
+      private/src/help_command
     )
     
     install_bundle(shell

http://git-wip-us.apache.org/repos/asf/celix/blob/4d52743e/shell/private/include/shell_private.h
----------------------------------------------------------------------
diff --git a/shell/private/include/shell_private.h b/shell/private/include/shell_private.h
index db609ca..9734ad5 100644
--- a/shell/private/include/shell_private.h
+++ b/shell/private/include/shell_private.h
@@ -45,7 +45,7 @@ celix_status_t shell_addCommand(shell_pt shell, service_reference_pt reference);
 
 char * shell_getCommandUsage(shell_pt shell, char * commandName);
 char * shell_getCommandDescription(shell_pt shell, char * commandName);
-service_reference_pt shell_getCommandReference(shell_pt shell, char * command);
+celix_status_t shell_getCommandReference(shell_pt shell_ptr, char *command_name_str, service_reference_pt *command_reference_ptr);
 void shell_executeCommand(shell_pt shell, char * commandLine, void (*out)(char *), void (*error)(char *));
 void shell_serviceChanged(service_listener_pt listener, service_event_pt event);
 

http://git-wip-us.apache.org/repos/asf/celix/blob/4d52743e/shell/private/src/activator.c
----------------------------------------------------------------------
diff --git a/shell/private/src/activator.c b/shell/private/src/activator.c
index ce01b59..cfa8bb3 100644
--- a/shell/private/src/activator.c
+++ b/shell/private/src/activator.c
@@ -24,16 +24,12 @@
  *  \copyright	Apache License, Version 2.0
  */
 #include <stdlib.h>
-#include <string.h>
 
 #include "shell_private.h"
 #include "bundle_activator.h"
-#include "bundle_context.h"
-#include "service_registration.h"
-#include "service_listener.h"
-#include "utils.h"
 #include "std_commands.h"
-#include "properties.h"
+
+#define NUMBER_OF_COMMANDS 10
 
 struct command {
     celix_status_t (*exec)(void *handle, char *commandLine, FILE *out, FILE *err);
@@ -45,55 +41,18 @@ struct command {
     properties_pt props;
 };
 
-static struct command std_commands[] = {
-        {psCommand_execute, "ps", "list installed bundles.", "ps [-l | -s | -u]", NULL, NULL, NULL},
-        {startCommand_execute, "start", "start bundle(s).", "start <id> [<id> ...]", NULL, NULL, NULL},
-        {NULL, NULL, NULL, NULL, NULL, NULL, NULL} /*marker for last element*/ 
-};
-
-
 struct bundle_instance {
 	shell_service_pt shellService;
 	service_registration_pt registration;
 	service_listener_pt listener;
 
-    /*
-    ps
-
-	service_registration_pt stopCommand;
-	command_pt stopCmd;
-	command_service_pt stopCmdSrv;
-
-	service_registration_pt installCommand;
-	command_pt installCmd;
-	command_service_pt installCmdSrv;
-
-	service_registration_pt uninstallCommand;
-	command_pt uninstallCmd;
-	command_service_pt uninstallCmdSrv;
-
-	service_registration_pt updateCommand;
-	command_pt updateCmd;
-	command_service_pt updateCmdSrv;
-
-	service_registration_pt logCommand;
-	command_pt logCmd;
-	command_service_pt logCmdSrv;
-
-	service_registration_pt inspectCommand;
-	command_pt inspectCmd;
-	command_service_pt inspectCmdSrv;
-
-	service_registration_pt helpCommand;
-	command_pt helpCmd;
-	command_service_pt helpCmdSrv;
-    */
+    struct command std_commands[NUMBER_OF_COMMANDS];
 };
 
 typedef struct bundle_instance *bundle_instance_pt;
 
 celix_status_t bundleActivator_create(bundle_context_pt context, void **userData) {
-	celix_status_t status = CELIX_SUCCESS;
+	celix_status_t status;
 
 	bundle_instance_pt bi = (bundle_instance_pt) calloc(1, sizeof(struct bundle_instance));
 
@@ -107,18 +66,29 @@ celix_status_t bundleActivator_create(bundle_context_pt context, void **userData
 	else {
 		status = shell_create(context, &bi->shellService);
 
-    int i = 0;
-    while (std_commands[i].exec != NULL) {
-            std_commands[i].props = properties_create();
-            if (std_commands[i].props != NULL) {
-                    properties_set(std_commands[i].props, "command.name", std_commands[i].name);
-                    properties_set(std_commands[i].props, "command.usage", std_commands[i].usage);
-                    properties_set(std_commands[i].props, "command.description", std_commands[i].description);
-
-                    std_commands[i].service = calloc(1, sizeof(struct commandService));
-                    if (std_commands[i].service != NULL) {
-                            std_commands[i].service->handle = context;
-                            std_commands[i].service->executeCommand = std_commands[i].exec;
+        bi->std_commands[0] = (struct command) {.exec = psCommand_execute, .name = "ps", .description = "list installed bundles.", .usage = "ps [-l | -s | -u]"};
+        bi->std_commands[1] = (struct command) {.exec = startCommand_execute, .name = "start", .description = "start bundle(s).", .usage = "start <id> [<id> ...]"};
+        bi->std_commands[2] = (struct command) {.exec = stopCommand_execute, .name = "stop", .description = "stop bundle(s).", .usage = "stop <id> [<id> ...]"};
+        bi->std_commands[3] = (struct command) {.exec = installCommand_execute, .name = "install", .description = "install bundle(s).", .usage = "install <file> [<file> ...]"};
+        bi->std_commands[4] = (struct command) {.exec = uninstallCommand_execute, .name = "uninstall", .description = "uninstall bundle(s).", .usage = "uninstall <file> [<file> ...]"};
+        bi->std_commands[5] = (struct command) {.exec = updateCommand_execute, .name = "update", .description = "update bundle(s).", .usage = "update <id> [<URL>]"};
+        bi->std_commands[6] = (struct command) {.exec = helpCommand_execute, .name = "help", .description = "display available commands and description.", .usage = "help <command>]"};
+        bi->std_commands[7] = (struct command) {.exec = logCommand_execute, .name = "log", .description = "print log.", .usage = "log"};
+        bi->std_commands[8] = (struct command) {.exec = inspectCommand_execute, .name = "inspect", .description = "inspect services and components.", .usage = "inspect (service) (capability|requirement) [<id> ...]"};
+        bi->std_commands[9] = (struct command) {NULL, NULL, NULL, NULL, NULL, NULL, NULL}; /*marker for last element*/
+
+        int i = 0;
+        while (bi->std_commands[i].exec != NULL) {
+            bi->std_commands[i].props = properties_create();
+            if (bi->std_commands[i].props != NULL) {
+                    properties_set(bi->std_commands[i].props, "command.name", bi->std_commands[i].name);
+                    properties_set(bi->std_commands[i].props, "command.usage", bi->std_commands[i].usage);
+                    properties_set(bi->std_commands[i].props, "command.description", bi->std_commands[i].description);
+
+                    bi->std_commands[i].service = calloc(1, sizeof(struct commandService));
+                    if (bi->std_commands[i].service != NULL) {
+                        bi->std_commands[i].service->handle = context;
+                        bi->std_commands[i].service->executeCommand = bi->std_commands[i].exec;
                     } else {
                             status = CELIX_ENOMEM;
                             break;
@@ -142,7 +112,7 @@ celix_status_t bundleActivator_create(bundle_context_pt context, void **userData
 }
 
 celix_status_t bundleActivator_start(void * userData, bundle_context_pt context) {
-	celix_status_t status = CELIX_SUCCESS;
+	celix_status_t status;
 	bundle_instance_pt bi = (bundle_instance_pt) userData;
 
 	status = bundleContext_registerService(context, (char *) OSGI_SHELL_SERVICE_NAME, bi->shellService, NULL, &bi->registration);
@@ -169,8 +139,8 @@ celix_status_t bundleActivator_start(void * userData, bundle_context_pt context)
 		if (status == CELIX_SUCCESS) {
 
             int i = 0;
-            while (std_commands[i].exec != NULL) {
-                    status = bundleContext_registerService(context, (char *)OSGI_SHELL_COMMAND_SERVICE_NAME, std_commands[i].service, std_commands[i].props, &std_commands[i].reg);
+            while (bi->std_commands[i].exec != NULL) {
+                    status = bundleContext_registerService(context, (char *)OSGI_SHELL_COMMAND_SERVICE_NAME, bi->std_commands[i].service, bi->std_commands[i].props, &bi->std_commands[i].reg);
                     if (status != CELIX_SUCCESS) {
                             break;
                     }
@@ -185,15 +155,15 @@ celix_status_t bundleActivator_start(void * userData, bundle_context_pt context)
 }
 
 celix_status_t bundleActivator_stop(void * userData, bundle_context_pt context) {
-	celix_status_t status = CELIX_SUCCESS;
+	celix_status_t status;
 	bundle_instance_pt bi = (bundle_instance_pt) userData;
 
-	//serviceRegistration_unregister(bi->registration);
             int i = 0;
-            while (std_commands[i].exec != NULL) {
-                    if (std_commands[i].reg!= NULL) {
-                            serviceRegistration_unregister(std_commands[i].reg);
-                            std_commands[i].reg = NULL;
+            while (bi->std_commands[i].exec != NULL) {
+                    if (bi->std_commands[i].reg!= NULL) {
+                            serviceRegistration_unregister(bi->std_commands[i].reg);
+                        bi->std_commands[i].reg = NULL;
+                        bi->std_commands[i].props = NULL;
                     }
                     i += 1;
             }
@@ -207,19 +177,17 @@ celix_status_t bundleActivator_destroy(void * userData, bundle_context_pt contex
 	bundle_instance_pt bi = (bundle_instance_pt) userData;
 
   int i = 0;
-  while (std_commands[i].exec != NULL) {
-          if (std_commands[i].props != NULL) {
-                  properties_destroy(std_commands[i].props);
+  while (bi->std_commands[i].exec != NULL) {
+          if (bi->std_commands[i].props != NULL) {
+                  properties_destroy(bi->std_commands[i].props);
           } 
-          if (std_commands[i].service != NULL) {
-                  free(std_commands[i].service);
+          if (bi->std_commands[i].service != NULL) {
+                  free(bi->std_commands[i].service);
           }
           i += 1;
   }
 
-  if (bi != NULL) {
     free(bi);
-  }
 
 	return CELIX_SUCCESS;
 }

http://git-wip-us.apache.org/repos/asf/celix/blob/4d52743e/shell/private/src/help_command.c
----------------------------------------------------------------------
diff --git a/shell/private/src/help_command.c b/shell/private/src/help_command.c
index b2ed30a..75be274 100644
--- a/shell/private/src/help_command.c
+++ b/shell/private/src/help_command.c
@@ -26,42 +26,23 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "command_impl.h"
 #include "array_list.h"
 #include "bundle_context.h"
-#include "bundle.h"
 #include "shell.h"
 
-void helpCommand_execute(command_pt command, char * line, void (*out)(char *), void (*err)(char *));
-
-command_pt helpCommand_create(bundle_context_pt context) {
-	command_pt command = (command_pt) malloc(sizeof(*command));
-	command->bundleContext = context;
-	command->name = "help";
-	command->shortDescription = "display available command usage and description.";
-	command->usage = "start [<command> ...]";
-	command->executeCommand = helpCommand_execute;
-	return command;
-}
-
-void helpCommand_destroy(command_pt command) {
-	free(command);
-}
-
-
-void helpCommand_execute(command_pt command, char * line, void (*out)(char *), void (*err)(char *)) {
+celix_status_t helpCommand_execute(void *handle, char * line, FILE *outStream, FILE *errStream) {
+	bundle_context_pt context = handle;
 	service_reference_pt shellService = NULL;
-	bundleContext_getServiceReference(command->bundleContext, (char *) OSGI_SHELL_SERVICE_NAME, &shellService);
+	bundleContext_getServiceReference(context, (char *) OSGI_SHELL_SERVICE_NAME, &shellService);
 
 	if (shellService != NULL) {
 		shell_service_pt shell = NULL;
-		bundleContext_getService(command->bundleContext, shellService, (void **) &shell);
+		bundleContext_getService(context, shellService, (void **) &shell);
 
 		if (shell != NULL) {
 			char delims[] = " ";
 			char * sub = NULL;
 			char *save_ptr = NULL;
-			char outString[256];
 
 			sub = strtok_r(line, delims, &save_ptr);
 			sub = strtok_r(NULL, delims, &save_ptr);
@@ -71,10 +52,9 @@ void helpCommand_execute(command_pt command, char * line, void (*out)(char *), v
 				array_list_pt commands = shell->getCommands(shell->shell);
 				for (i = 0; i < arrayList_size(commands); i++) {
 					char *name = arrayList_get(commands, i);
-					sprintf(outString, "%s\n", name);
-					out(outString);
+					fprintf(outStream, "%s\n", name);
 				}
-				out("\nUse 'help <command-name>' for more information.\n");
+				fprintf(outStream, "\nUse 'help <command-name>' for more information.\n");
 			} else {
 				bool found = false;
 				while (sub != NULL) {
@@ -87,15 +67,12 @@ void helpCommand_execute(command_pt command, char * line, void (*out)(char *), v
 							char *usage = shell->getCommandUsage(shell->shell, name);
 
 							if (found) {
-								out("---\n");
+								fprintf(outStream, "---\n");
 							}
 							found = true;
-							sprintf(outString, "Command     : %s\n", name);
-							out(outString);
-							sprintf(outString, "Usage       : %s\n", usage);
-							out(outString);
-							sprintf(outString, "Description : %s\n", desc);
-							out(outString);
+							fprintf(outStream, "Command     : %s\n", name);
+							fprintf(outStream, "Usage       : %s\n", usage);
+							fprintf(outStream, "Description : %s\n", desc);
 						}
 					}
 					sub = strtok_r(NULL, delims, &save_ptr);
@@ -103,4 +80,5 @@ void helpCommand_execute(command_pt command, char * line, void (*out)(char *), v
 			}
 		}
 	}
+	return CELIX_SUCCESS;
 }

http://git-wip-us.apache.org/repos/asf/celix/blob/4d52743e/shell/private/src/inspect_command.c
----------------------------------------------------------------------
diff --git a/shell/private/src/inspect_command.c b/shell/private/src/inspect_command.c
index bac1ed9..68b7625 100644
--- a/shell/private/src/inspect_command.c
+++ b/shell/private/src/inspect_command.c
@@ -27,41 +27,23 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "command_impl.h"
 #include "array_list.h"
 #include "bundle_context.h"
-#include "bundle.h"
-#include "module.h"
-#include "constants.h"
-#include "service_registration.h"
-#include "service_reference.h"
-#include "hash_map.h"
+
+#include "std_commands.h"
 
 #define SERVICE_TYPE "service"
 #define CAPABILITY "capability"
 #define REQUIREMENT "requirement"
 
-void inspectCommand_execute(command_pt command, char * commandline, void (*out)(char *), void (*err)(char *));
-celix_status_t inspectCommand_printExportedServices(command_pt command, array_list_pt ids, void (*out)(char *), void (*err)(char *));
-celix_status_t inspectCommand_printImportedServices(command_pt command, array_list_pt ids, void (*out)(char *), void (*err)(char *));
-
-command_pt inspectCommand_create(bundle_context_pt context) {
-	command_pt command = (command_pt) malloc(sizeof(*command));
-	command->bundleContext = context;
-	command->name = "inspect";
-	command->shortDescription = "inspect dependencies";
-	command->usage = "inspect (service) (capability|requirement) [<id> ...]";
-	command->executeCommand = inspectCommand_execute;
-	return command;
-}
-
-void inspectCommand_destroy(command_pt command) {
-	free(command);
-}
+celix_status_t inspectCommand_printExportedServices(bundle_context_pt context, array_list_pt ids, FILE *outStream, FILE *errStream);
+celix_status_t inspectCommand_printImportedServices(bundle_context_pt context, array_list_pt ids, FILE *outStream, FILE *errStream);
 
-void inspectCommand_execute(command_pt command, char * commandline, void (*out)(char *), void (*err)(char *)) {
+celix_status_t inspectCommand_execute(void *handle, char * commandline, FILE *outStream, FILE *errStream) {
 	celix_status_t status = CELIX_SUCCESS;
-	char outString[256];
+
+	bundle_context_pt context = handle;
+
 	char *token;
 	strtok_r(commandline, " ", &token);
 	char *type = strtok_r(NULL, " ", &token);
@@ -79,43 +61,36 @@ void inspectCommand_execute(command_pt command, char * commandline, void (*out)(
 
 			if (strcmp(type, SERVICE_TYPE) == 0) {
 				if (strcmp(direction, CAPABILITY) == 0) {
-					status = inspectCommand_printExportedServices(command, ids, out, err);
+					status = inspectCommand_printExportedServices(context, ids, outStream, errStream);
 					if (status != CELIX_SUCCESS) {
-						out("INSPECT: Error\n");
+						fprintf(errStream, "INSPECT: Error\n");
 					}
 				} else if (strcmp(direction, REQUIREMENT) == 0) {
-                    status = inspectCommand_printImportedServices(command, ids, out, err);
+                    status = inspectCommand_printImportedServices(context, ids, outStream, errStream);
                     if (status != CELIX_SUCCESS) {
-                        out("INSPECT: Error\n");
+						fprintf(errStream, "INSPECT: Error\n");
                     }
 				} else {
-				    out("INSPECT: Invalid argument\n");
-                    sprintf(outString, "%s\n", command->usage);
-                    out(outString);
+					fprintf(errStream, "INSPECT: Invalid argument\n");
 				}
 			} else {
-				out("INSPECT: Invalid argument\n");
-				sprintf(outString, "%s\n", command->usage);
-                out(outString);
+				fprintf(errStream, "INSPECT: Invalid argument\n");
 			}
 		} else {
-			out("INSPECT: Too few arguments\n");
-			sprintf(outString, "%s\n", command->usage);
-			out(outString);
+			fprintf(errStream, "INSPECT: Too few arguments\n");
 		}
 	} else {
-		out("INSPECT: Too few arguments\n");
-		sprintf(outString, "%s\n", command->usage);
-		out(outString);
+		fprintf(errStream, "INSPECT: Too few arguments\n");
 	}
+	return status;
 }
 
-celix_status_t inspectCommand_printExportedServices(command_pt command, array_list_pt ids, void (*out)(char *), void (*err)(char *)) {
+celix_status_t inspectCommand_printExportedServices(bundle_context_pt context, array_list_pt ids, FILE *outStream, FILE *errStream) {
 	celix_status_t status = CELIX_SUCCESS;
 	array_list_pt bundles = NULL;
 
 	if (arrayList_isEmpty(ids)) {
-		status = bundleContext_getBundles(command->bundleContext, &bundles);
+		status = bundleContext_getBundles(context, &bundles);
 	} else {
 		unsigned int i;
 
@@ -124,13 +99,11 @@ celix_status_t inspectCommand_printExportedServices(command_pt command, array_li
 			char *idStr = (char *) arrayList_get(ids, i);
 			long id = atol(idStr);
 			bundle_pt b = NULL;
-			celix_status_t st = bundleContext_getBundleById(command->bundleContext, id, &b);
+			celix_status_t st = bundleContext_getBundleById(context, id, &b);
 			if (st == CELIX_SUCCESS) {
 				arrayList_add(bundles, b);
 			} else {
-				char line[256];
-				sprintf(line, "INSPECT: Invalid bundle ID: %ld\n", id);
-				out(line);
+				fprintf(outStream, "INSPECT: Invalid bundle ID: %ld\n", id);
 			}
 		}
 	}
@@ -141,26 +114,24 @@ celix_status_t inspectCommand_printExportedServices(command_pt command, array_li
 			bundle_pt bundle = (bundle_pt) arrayList_get(bundles, i);
 
 			if (i > 0) {
-				out("\n");
+				fprintf(outStream, "\n");
 			}
 
 			if (bundle != NULL) {
 				array_list_pt refs = NULL;
 
 				if (bundle_getRegisteredServices(bundle, &refs) == CELIX_SUCCESS) {
-					char line[256];
 					module_pt module = NULL;
 					char * name = NULL;
 					status = bundle_getCurrentModule(bundle, &module);
 					if (status == CELIX_SUCCESS) {
 						status = module_getSymbolicName(module, &name);
 						if (status == CELIX_SUCCESS) {
-							sprintf(line, "%s provides services:\n", name);
-							out(line);
-							out("==============\n");
+							fprintf(outStream, "%s provides services:\n", name);
+							fprintf(outStream, "==============\n");
 
 							if (refs == NULL || arrayList_size(refs) == 0) {
-								out("Nothing\n");
+								fprintf(outStream, "Nothing\n");
 							} else {
 								unsigned int j = 0;
 								for (j = 0; j < arrayList_size(refs); j++) {
@@ -169,19 +140,18 @@ celix_status_t inspectCommand_printExportedServices(command_pt command, array_li
 									char **keys;
 
 									serviceReference_getPropertyKeys(ref, &keys, &size);
-									for (int i = 0; i < size; i++) {
-									    char *key = keys[i];
+									for (int k = 0; k < size; k++) {
+									    char *key = keys[k];
 									    char *value = NULL;
 									    serviceReference_getProperty(ref, key, &value);
 
-									    sprintf(line, "%s = %s\n", key, value);
-                                        out(line);
+										fprintf(outStream, "%s = %s\n", key, value);
 									}
 
 //									objectClass = properties_get(props, (char *) OSGI_FRAMEWORK_OBJECTCLASS);
 //									sprintf(line, "ObjectClass = %s\n", objectClass);
 									if ((j + 1) < arrayList_size(refs)) {
-										out("----\n");
+										fprintf(outStream, "----\n");
 									}
 								}
 							}
@@ -196,12 +166,12 @@ celix_status_t inspectCommand_printExportedServices(command_pt command, array_li
 	return status;
 }
 
-celix_status_t inspectCommand_printImportedServices(command_pt command, array_list_pt ids, void (*out)(char *), void (*err)(char *)) {
+celix_status_t inspectCommand_printImportedServices(bundle_context_pt context, array_list_pt ids, FILE *outStream, FILE *errStream) {
     celix_status_t status = CELIX_SUCCESS;
     array_list_pt bundles = NULL;
 
     if (arrayList_isEmpty(ids)) {
-        status = bundleContext_getBundles(command->bundleContext, &bundles);
+        status = bundleContext_getBundles(context, &bundles);
     } else {
         unsigned int i;
 
@@ -210,13 +180,11 @@ celix_status_t inspectCommand_printImportedServices(command_pt command, array_li
             char *idStr = (char *) arrayList_get(ids, i);
             long id = atol(idStr);
             bundle_pt b = NULL;
-            celix_status_t st = bundleContext_getBundleById(command->bundleContext, id, &b);
+            celix_status_t st = bundleContext_getBundleById(context, id, &b);
             if (st == CELIX_SUCCESS) {
                 arrayList_add(bundles, b);
             } else {
-                char line[256];
-                sprintf(line, "INSPECT: Invalid bundle ID: %ld\n", id);
-                out(line);
+				fprintf(outStream, "INSPECT: Invalid bundle ID: %ld\n", id);
             }
         }
     }
@@ -227,31 +195,28 @@ celix_status_t inspectCommand_printImportedServices(command_pt command, array_li
             bundle_pt bundle = (bundle_pt) arrayList_get(bundles, i);
 
             if (i > 0) {
-                out("\n");
+				fprintf(outStream, "\n");
             }
 
             if (bundle != NULL) {
                 array_list_pt refs = NULL;
 
                 if (bundle_getServicesInUse(bundle, &refs) == CELIX_SUCCESS) {
-                    char line[256];
                     module_pt module = NULL;
                     char * name = NULL;
                     status = bundle_getCurrentModule(bundle, &module);
                     if (status == CELIX_SUCCESS) {
                         status = module_getSymbolicName(module, &name);
                         if (status == CELIX_SUCCESS) {
-                            sprintf(line, "%s requires services:\n", name);
-                            out(line);
-                            out("==============\n");
+							fprintf(outStream, "%s requires services:\n", name);
+							fprintf(outStream, "==============\n");
 
                             if (refs == NULL || arrayList_size(refs) == 0) {
-                                out("Nothing\n");
+								fprintf(outStream, "Nothing\n");
                             } else {
                                 unsigned int j = 0;
                                 for (j = 0; j < arrayList_size(refs); j++) {
                                     service_reference_pt ref = (service_reference_pt) arrayList_get(refs, j);
-                                    char line[256];
                                     bundle_pt usedBundle = NULL;
                                     module_pt usedModule = NULL;
                                     char *usedSymbolicName = NULL;
@@ -262,26 +227,24 @@ celix_status_t inspectCommand_printImportedServices(command_pt command, array_li
                                     bundle_getCurrentModule(usedBundle, &usedModule);
                                     module_getSymbolicName(usedModule, &usedSymbolicName);
 
-                                    sprintf(line, "%s [%ld]\n", usedSymbolicName, usedBundleId);
-                                    out(line);
+									fprintf(outStream, "%s [%ld]\n", usedSymbolicName, usedBundleId);
 
                                     unsigned int size = 0;
                                     char **keys;
 
                                     serviceReference_getPropertyKeys(ref, &keys, &size);
-                                    for (int i = 0; i < size; i++) {
-                                        char *key = keys[i];
+                                    for (int k = 0; k < size; k++) {
+                                        char *key = keys[k];
                                         char *value = NULL;
                                         serviceReference_getProperty(ref, key, &value);
 
-                                        sprintf(line, "%s = %s\n", key, value);
-                                        out(line);
+										fprintf(outStream, "%s = %s\n", key, value);
                                     }
 
 //                                  objectClass = properties_get(props, (char *) OSGI_FRAMEWORK_OBJECTCLASS);
 //                                  sprintf(line, "ObjectClass = %s\n", objectClass);
                                     if ((j + 1) < arrayList_size(refs)) {
-                                        out("----\n");
+										fprintf(outStream, "----\n");
                                     }
                                 }
                             }

http://git-wip-us.apache.org/repos/asf/celix/blob/4d52743e/shell/private/src/install_command.c
----------------------------------------------------------------------
diff --git a/shell/private/src/install_command.c b/shell/private/src/install_command.c
index 352cbfa..067ba2b 100644
--- a/shell/private/src/install_command.c
+++ b/shell/private/src/install_command.c
@@ -26,51 +26,28 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "command_impl.h"
 #include "array_list.h"
 #include "bundle_context.h"
-#include "bundle_archive.h"
-#include "module.h"
-#include "bundle.h"
-#include "install_command.h"
 
-void installCommand_execute(command_pt command, char * line, void (*out)(char *), void (*err)(char *));
-void installCommand_install(command_pt command, bundle_pt *bundle, char * location, void (*out)(char *), void (*err)(char *));
+void installCommand_execute(void *handle, char * line, FILE *outStream, FILE *errStream) {
+	bundle_context_pt context = handle;
 
-command_pt installCommand_create(bundle_context_pt context) {
-	command_pt command = (command_pt) malloc(sizeof(*command));
-	command->bundleContext = context;
-	command->name = "install";
-	command->shortDescription = "install bundle(s).";
-	command->usage = "install <file> [<file> ...]";
-	command->executeCommand = installCommand_execute;
-	return command;
-}
-
-void installCommand_destroy(command_pt command) {
-	free(command);
-}
-
-void installCommand_execute(command_pt command, char * line, void (*out)(char *), void (*err)(char *)) {
 	char delims[] = " ";
 	char * sub = NULL;
 	char *save_ptr = NULL;
 	char info[256];
-	char outString[256];
 
 	// ignore the command
 	sub = strtok_r(line, delims, &save_ptr);
 	sub = strtok_r(NULL, delims, &save_ptr);
 	
 	if (sub == NULL) {
-		err("Incorrect number of arguments.\n");
-		sprintf(outString, "%s\n", command->usage);
-		out(outString);
+		fprintf(errStream, "Incorrect number of arguments.\n");
 	} else {
 		info[0] = '\0';
 		while (sub != NULL) {
 			bundle_pt bundle = NULL;
-			installCommand_install(command, &bundle, sub, out, err);
+			bundleContext_installBundle(context, sub, &bundle);
 			if (bundle != NULL) {
 				long id;
 				bundle_archive_pt archive = NULL;
@@ -87,17 +64,13 @@ void installCommand_execute(command_pt command, char * line, void (*out)(char *)
 			sub = strtok_r(NULL, delims, &save_ptr);
 		}
 		if (strchr(info, ',') != NULL) {
-			out("Bundle IDs: ");
-			out(info);
-			out("\n");
+			fprintf(outStream, "Bundle IDs: ");
+			fprintf(outStream, "%s", info);
+			fprintf(outStream, "\n");
 		} else if (strlen(info) > 0) {
-			out("Bundle ID: ");
-			out(info);
-			out("\n");
+			fprintf(outStream, "Bundle ID: ");
+			fprintf(outStream, "%s", info);
+			fprintf(outStream, "\n");
 		}
 	}
-}
-
-void installCommand_install(command_pt command, bundle_pt *bundle, char * location, void (*out)(char *), void (*err)(char *)) {
-	bundleContext_installBundle(command->bundleContext, location, bundle);
-}
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/celix/blob/4d52743e/shell/private/src/log_command.c
----------------------------------------------------------------------
diff --git a/shell/private/src/log_command.c b/shell/private/src/log_command.c
index 403ed65..95679ca 100644
--- a/shell/private/src/log_command.c
+++ b/shell/private/src/log_command.c
@@ -27,41 +27,23 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "command_impl.h"
-#include "log_command.h"
 #include "bundle_context.h"
 #include "log_reader_service.h"
-#include "log_entry.h"
 #include "linked_list_iterator.h"
 
-void logCommand_execute(command_pt command, char *line, void (*out)(char *), void (*err)(char *));
-celix_status_t logCommand_levelAsString(command_pt command, log_level_t level, char **string);
+celix_status_t logCommand_levelAsString(bundle_context_pt context, log_level_t level, char **string);
 
-command_pt logCommand_create(bundle_context_pt context) {
-    command_pt command = (command_pt) malloc(sizeof(*command));
-    command->bundleContext = context;
-    command->name = "log";
-    command->shortDescription = "print log";
-    command->usage = "log";
-    command->executeCommand = logCommand_execute;
-    return command;
-}
-
-void logCommand_destroy(command_pt command) {
-    free(command);
-}
-
-void logCommand_execute(command_pt command, char *line, void (*out)(char *), void (*err)(char *)) {
+void logCommand_execute(bundle_context_pt context, char *line, FILE *outStream, FILE *errStream) {
     service_reference_pt readerService = NULL;
 
-    bundleContext_getServiceReference(command->bundleContext, (char *) OSGI_LOGSERVICE_READER_SERVICE_NAME, &readerService);
+    bundleContext_getServiceReference(context, (char *) OSGI_LOGSERVICE_READER_SERVICE_NAME, &readerService);
     if (readerService != NULL) {
         linked_list_pt list = NULL;
         linked_list_iterator_pt iter = NULL;
         log_reader_service_pt reader = NULL;
 
 
-		bundleContext_getService(command->bundleContext, readerService, (void **) &reader);
+		bundleContext_getService(context, readerService, (void **) &reader);
 		reader->getLog(reader->reader, &list);
 		iter = linkedListIterator_create(list, 0);
 		while (linkedListIterator_hasNext(iter)) {
@@ -70,33 +52,26 @@ void logCommand_execute(command_pt command, char *line, void (*out)(char *), voi
 			char *level = NULL;
 			char errorString[256];
 
-			size_t timeLength = strftime(time, 20, "%Y-%m-%d %H:%M:%S", localtime(&entry->time));
-			logCommand_levelAsString(command, entry->level, &level);
+			logCommand_levelAsString(context, entry->level, &level);
 
 			if (entry->errorCode > 0) {
 				celix_strerror(entry->errorCode, errorString, 256);
-				size_t length = timeLength + strlen(entry->bundleSymbolicName) + strlen(entry->message) + strlen(errorString) + 40;
-		        char line[length];
-				snprintf(line, length, "%s - Bundle: %s - %s - %d %s\n", time, entry->bundleSymbolicName, entry->message, entry->errorCode, errorString);
-				out(line);
+				fprintf(outStream, "%s - Bundle: %s - %s - %d %s\n", time, entry->bundleSymbolicName, entry->message, entry->errorCode, errorString);
 			} else {
-				size_t length = timeLength + strlen(entry->bundleSymbolicName) + strlen(entry->message) + 20;
-				char line[length];
-				snprintf(line, length, "%s - Bundle: %s - %s\n", time, entry->bundleSymbolicName, entry->message);
-				out(line);
+				fprintf(outStream, "%s - Bundle: %s - %s\n", time, entry->bundleSymbolicName, entry->message);
 			}
 		}
 		linkedListIterator_destroy(iter);
 		linkedList_destroy(list);
 		bool result = true;
-		bundleContext_ungetService(command->bundleContext, readerService, &result);
-        bundleContext_ungetServiceReference(command->bundleContext, readerService);
+		bundleContext_ungetService(context, readerService, &result);
+        bundleContext_ungetServiceReference(context, readerService);
     } else {
-        out("No log reader available\n");
+		fprintf(outStream, "No log reader available\n");
     }
 }
 
-celix_status_t logCommand_levelAsString(command_pt command, log_level_t level, char **string) {
+celix_status_t logCommand_levelAsString(bundle_context_pt context, log_level_t level, char **string) {
 	switch (level) {
 	case OSGI_LOGSERVICE_ERROR:
 		*string = "ERROR";

http://git-wip-us.apache.org/repos/asf/celix/blob/4d52743e/shell/private/src/ps_command.c
----------------------------------------------------------------------
diff --git a/shell/private/src/ps_command.c b/shell/private/src/ps_command.c
index 7511391..ce84e99 100644
--- a/shell/private/src/ps_command.c
+++ b/shell/private/src/ps_command.c
@@ -28,9 +28,8 @@
 
 #include "array_list.h"
 #include "bundle_context.h"
-#include "bundle_archive.h"
-#include "module.h"
-#include "bundle.h"
+
+#include "std_commands.h"
 
 static char * psCommand_stateString(bundle_state_e state); 
 

http://git-wip-us.apache.org/repos/asf/celix/blob/4d52743e/shell/private/src/shell.c
----------------------------------------------------------------------
diff --git a/shell/private/src/shell.c b/shell/private/src/shell.c
index 4b3e494..3500d89 100644
--- a/shell/private/src/shell.c
+++ b/shell/private/src/shell.c
@@ -54,6 +54,7 @@ celix_status_t shell_create(bundle_context_pt context, shell_service_pt* shellSe
 		lclService->getCommands = shell_getCommands;
 		lclService->getCommandDescription = shell_getCommandDescription;
 		lclService->getCommandUsage = shell_getCommandUsage;
+		lclService->getCommandReference = shell_getCommandReference;
 		lclService->executeCommand = shell_executeCommand;
 
 		*shellService = lclService;
@@ -125,21 +126,51 @@ array_list_pt shell_getCommands(shell_pt shell) {
 }
 
 char * shell_getCommandUsage(shell_pt shell, char * commandName) {
-	//command_service_pt command = hashMap_get(shell->commandNameMap, commandName);
-  //  char *usage = NULL;
-  //  bundleContext_getProperty(shell->bundleContext, "command.usage", &usage);
-	//return (command == NULL || usage == NULL) ? NULL : usage;
-  return "TODO";
+	char *usage = NULL;
+	service_reference_pt reference = NULL;
+	shell_getCommandReference(shell, commandName, &reference);
+	if (reference) {
+		serviceReference_getProperty(reference, "command.usage", &usage);
+	}
+
+	return usage;
 }
 
 char * shell_getCommandDescription(shell_pt shell, char * commandName) {
-        /*
-	command_service_pt command = hashMap_get(shell->commandNameMap, commandName);
-    char *desc = NULL;
-    bundleContext_getProperty(shell->bundleContext, "command.description", &desc);
-	return (command == NULL || desc == NULL) ? NULL : desc;
-  */
-  return "TODO";
+	char *description = NULL;
+	service_reference_pt reference = NULL;
+	shell_getCommandReference(shell, commandName, &reference);
+	if (reference) {
+		serviceReference_getProperty(reference, "command.description", &description);
+	}
+
+	return description;
+}
+
+celix_status_t shell_getCommandReference(shell_pt shell_ptr, char *command_name_str, service_reference_pt *command_reference_ptr) {
+	celix_status_t status = CELIX_SUCCESS;
+
+	if (!shell_ptr || !command_name_str || !command_reference_ptr) {
+		status = CELIX_ILLEGAL_ARGUMENT;
+	}
+
+	if (status == CELIX_SUCCESS) {
+		*command_reference_ptr = NULL;
+		hash_map_iterator_pt iter = hashMapIterator_create(shell_ptr->commandReferenceMap);
+		while (hashMapIterator_hasNext(iter)) {
+			hash_map_entry_pt entry = hashMapIterator_nextEntry(iter);
+			service_reference_pt reference = hashMapEntry_getKey(entry);
+			char *name_str = NULL;
+			serviceReference_getProperty(reference, "command.name", &name_str);
+			if (strcmp(name_str, command_name_str) == 0) {
+				*command_reference_ptr = (service_reference_pt) hashMapEntry_getKey(entry);
+				break;
+			}
+		}
+		hashMapIterator_destroy(iter);
+	}
+
+	return status;
 }
 
 void shell_executeCommand(shell_pt shell, char * commandLine, void (*out)(char *), void (*error)(char *)) {

http://git-wip-us.apache.org/repos/asf/celix/blob/4d52743e/shell/private/src/stop_command.c
----------------------------------------------------------------------
diff --git a/shell/private/src/stop_command.c b/shell/private/src/stop_command.c
index 2529d49..a790c74 100644
--- a/shell/private/src/stop_command.c
+++ b/shell/private/src/stop_command.c
@@ -26,41 +26,23 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "command_impl.h"
 #include "array_list.h"
 #include "bundle_context.h"
 #include "bundle.h"
 #include "utils.h"
 
-void stopCommand_execute(command_pt command, char * line, void (*out)(char *), void (*err)(char *));
-
-command_pt stopCommand_create(bundle_context_pt context) {
-	command_pt command = (command_pt) malloc(sizeof(*command));
-	command->bundleContext = context;
-	command->name = "stop";
-	command->shortDescription = "stop bundle(s).";
-	command->usage = "start <id> [<id> ...]";
-	command->executeCommand = stopCommand_execute;
-	return command;
-}
-
-void stopCommand_destroy(command_pt command) {
-	free(command);
-}
-
-void stopCommand_execute(command_pt command, char * line, void (*out)(char *), void (*err)(char *)) {
+celix_status_t stopCommand_execute(void *handle, char *line, FILE *outStream, FILE *errStream) {
+	celix_status_t status = CELIX_SUCCESS;
+	bundle_context_pt context = handle;
     char delims[] = " ";
 	char * sub = NULL;
 	char *save_ptr = NULL;
-	char outString[256];
 
 	sub = strtok_r(line, delims, &save_ptr);
 	sub = strtok_r(NULL, delims, &save_ptr);
 
 	if (sub == NULL) {
-		err("Incorrect number of arguments.\n");
-		sprintf(outString, "%s\n", command->usage);
-		out(outString);
+		fprintf(outStream, "Incorrect number of arguments.\n");
 	} else {
 		while (sub != NULL) {
 			bool numeric;
@@ -68,16 +50,18 @@ void stopCommand_execute(command_pt command, char * line, void (*out)(char *), v
 			if (numeric) {
 				long id = atol(sub);
 				bundle_pt bundle = NULL;
-				bundleContext_getBundleById(command->bundleContext, id, &bundle);
+				bundleContext_getBundleById(context, id, &bundle);
 				if (bundle != NULL) {
 					bundle_stopWithOptions(bundle, 0);
 				} else {
-					err("Bundle id is invalid.");
+					fprintf(outStream, "Bundle id is invalid.");
 				}
 			} else {
-				err("Bundle id should be a number (bundle id).\n");
+				fprintf(outStream, "Bundle id should be a number (bundle id).\n");
 			}
 			sub = strtok_r(NULL, delims, &save_ptr);
 		}
 	}
+
+	return status;
 }

http://git-wip-us.apache.org/repos/asf/celix/blob/4d52743e/shell/private/src/uninstall_command.c
----------------------------------------------------------------------
diff --git a/shell/private/src/uninstall_command.c b/shell/private/src/uninstall_command.c
index da57319..973adf2 100644
--- a/shell/private/src/uninstall_command.c
+++ b/shell/private/src/uninstall_command.c
@@ -26,53 +26,32 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "command_impl.h"
 #include "array_list.h"
 #include "bundle_context.h"
-#include "bundle.h"
-#include "uninstall_command.h"
 
-void uninstallCommand_execute(command_pt command, char * line, void (*out)(char *), void (*err)(char *));
-
-command_pt uninstallCommand_create(bundle_context_pt context) {
-	command_pt command = (command_pt) malloc(sizeof(*command));
-	command->bundleContext = context;
-	command->name = "uninstall";
-	command->shortDescription = "uninstall bundle(s).";
-	command->usage = "uninstall <id> [<id> ...]";
-	command->executeCommand = uninstallCommand_execute;
-	return command;
-}
-
-void uninstallCommand_destroy(command_pt command) {
-	free(command);
-}
-
-
-void uninstallCommand_execute(command_pt command, char * line, void (*out)(char *), void (*err)(char *)) {
+celix_status_t uninstallCommand_execute(void *handle, char * line, FILE *outStream, FILE *errStream) {
+	bundle_context_pt context = handle;
 	char delims[] = " ";
 	char * sub = NULL;
 	char *save_ptr = NULL;
-	char outString[256];
 
 	sub = strtok_r(line, delims, &save_ptr);
 	sub = strtok_r(NULL, delims, &save_ptr);
 
 	if (sub == NULL) {
-		err("Incorrect number of arguments.\n");
-		sprintf(outString, "%s\n", command->usage);
-		out(outString);
+		fprintf(errStream, "Incorrect number of arguments.\n");
 	} else {
 		while (sub != NULL) {
 			long id = atol(sub);
 			bundle_pt bundle = NULL;
-			bundleContext_getBundleById(command->bundleContext, id, &bundle);
+			bundleContext_getBundleById(context, id, &bundle);
 			if (bundle != NULL) {
 				bundle_uninstall(bundle);
 			} else {
-				err("Bundle id is invalid.");
+				fprintf(errStream, "Bundle id is invalid.");
 			}
 			sub = strtok_r(NULL, delims, &save_ptr);
 		}
 	}
+	return CELIX_SUCCESS;
 }

http://git-wip-us.apache.org/repos/asf/celix/blob/4d52743e/shell/private/src/update_command.c
----------------------------------------------------------------------
diff --git a/shell/private/src/update_command.c b/shell/private/src/update_command.c
index 9ddfba0..a0af0b0 100644
--- a/shell/private/src/update_command.c
+++ b/shell/private/src/update_command.c
@@ -27,50 +27,28 @@
 #include <stdlib.h>
 #include <string.h>
 #include <curl/curl.h>
-#include <curl/easy.h>
 
-#include "command_impl.h"
 #include "array_list.h"
 #include "bundle_context.h"
-#include "bundle.h"
-#include "update_command.h"
 
-void updateCommand_execute(command_pt command, char * line, void (*out)(char *), void (*err)(char *));
-celix_status_t updateCommand_download(command_pt command, char * url, char **inputFile);
+celix_status_t updateCommand_download(bundle_context_pt context, char * url, char **inputFile);
 size_t updateCommand_writeData(void *ptr, size_t size, size_t nmemb, FILE *stream);
 
-command_pt updateCommand_create(bundle_context_pt context) {
-	command_pt command = (command_pt) malloc(sizeof(*command));
-	command->bundleContext = context;
-	command->name = "update";
-	command->shortDescription = "update bundle.";
-	command->usage = "update <id> [<URL>]";
-	command->executeCommand = updateCommand_execute;
-	return command;
-}
-
-void updateCommand_destroy(command_pt command) {
-	free(command);
-}
-
-
-void updateCommand_execute(command_pt command, char * line, void (*out)(char *), void (*err)(char *)) {
+void updateCommand_execute(void *handle, char * line, FILE *outStream, FILE *errStream) {
+	bundle_context_pt context = handle;
     bundle_pt bundle = NULL;
 	char delims[] = " ";
 	char * sub = NULL;
 	char *save_ptr = NULL;
-	char outString[256];
 
 	sub = strtok_r(line, delims, &save_ptr);
 	sub = strtok_r(NULL, delims, &save_ptr);
 
 	if (sub == NULL) {
-		err("Incorrect number of arguments.\n");
-		sprintf(outString, "%s\n", command->usage);
-		out(outString);
+		fprintf(errStream, "Incorrect number of arguments.\n");
 	} else {
 		long id = atol(sub);
-		bundleContext_getBundleById(command->bundleContext, id, &bundle);
+		bundleContext_getBundleById(context, id, &bundle);
 		if (bundle != NULL) {
 			char inputFile[256];
 			sub = strtok_r(NULL, delims, &save_ptr);
@@ -79,24 +57,22 @@ void updateCommand_execute(command_pt command, char * line, void (*out)(char *),
 				char *test = inputFile;
 				printf("URL: %s\n", sub);
 
-				if (updateCommand_download(command, sub, &test) == CELIX_SUCCESS) {
+				if (updateCommand_download(context, sub, &test) == CELIX_SUCCESS) {
 					printf("Update bundle with stream\n");
 					bundle_update(bundle, inputFile);
 				} else {
-					char error[256];
-					sprintf(error, "Unable to download from %s\n", sub);
-					err(error);
+					fprintf(errStream, "Unable to download from %s\n", sub);
 				}
 			} else {
 				bundle_update(bundle, NULL);
 			}
 		} else {
-			err("Bundle id is invalid.\n");
+			fprintf(errStream, "Bundle id is invalid.\n");
 		}
 	}
 }
 
-celix_status_t updateCommand_download(command_pt command, char * url, char **inputFile) {
+celix_status_t updateCommand_download(bundle_context_pt context, char * url, char **inputFile) {
 	CURL *curl = NULL;
 	CURLcode res = 0;
 	curl = curl_easy_init();

http://git-wip-us.apache.org/repos/asf/celix/blob/4d52743e/shell/public/include/shell.h
----------------------------------------------------------------------
diff --git a/shell/public/include/shell.h b/shell/public/include/shell.h
index 11a79b3..9fe60b4 100644
--- a/shell/public/include/shell.h
+++ b/shell/public/include/shell.h
@@ -39,6 +39,7 @@ struct shellService {
 	array_list_pt (*getCommands)(shell_pt shell);
 	char * (*getCommandUsage)(shell_pt shell, char * commandName);
 	char * (*getCommandDescription)(shell_pt shell, char * commandName);
+	celix_status_t (*getCommandReference)(shell_pt shell_ptr, char *command_name_str, service_reference_pt *command_reference_ptr);
 	void (*executeCommand)(shell_pt shell, char * commandLine, void (*out)(char *), void (*error)(char *));
 };