Make main dindexer show options used to build.

cmake/Modules/WithMediaAutodetect.cmake

@@ -0,0 +1,7 @@
+if (DINDEXER_WITH_MEDIA_AUTODETECT)
+	find_package(blkid)
+	if (NOT BLKID_FOUND)
+		message(STATUS "libblkid not found, media autodetection will be disabled")
+		set(DINDEXER_WITH_MEDIA_AUTODETECT OFF)
+	endif()
+endif()

src/common/commandline.cpp

@@ -37,7 +37,7 @@ namespace dinlib {
 #if VERSION_BETA
 			"b"
 #endif
-			;
+		;
 	} //unnamed namespace
 
 	po::options_description get_default_commandline() {

src/main/CMakeLists.txt

@@ -1,8 +1,11 @@
 project(${bare_name} C)
 
+include(WithMediaAutodetect)
+
 add_executable(${PROJECT_NAME}
 	main.c
 	findactions.c
+	builtin_feats.c
 )
 
 target_include_directories(${PROJECT_NAME}
@@ -12,3 +15,9 @@ target_include_directories(${PROJECT_NAME}
 target_link_libraries(${PROJECT_NAME}
 	PRIVATE ${bare_name}-inc
 )
+
+if (DINDEXER_WITH_MEDIA_AUTODETECT)
+	target_compile_definitions(${PROJECT_NAME}
+		PRIVATE WITH_MEDIA_AUTODETECT
+	)
+endif()

src/main/builtin_feats.c

@@ -0,0 +1,50 @@
+/* Copyright 2015, Michele Santullo
+ * This file is part of "dindexer".
+ *
+ * "dindexer" is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * "dindexer" is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with "dindexer".  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include "dindexerConfig.h"
+
+void print_builtin_feats() {
+#if VERSION_BETA
+	char beta_str[2] = "b";
+#else
+	char beta_str[1] = "";
+#endif
+
+	printf("%s v %d.%d.%d%s\nRev %s\n",
+		PROGRAM_NAME,
+		VERSION_MAJOR,
+		VERSION_MINOR,
+		VERSION_PATCH,
+		beta_str,
+		VERSION_GIT
+	);
+
+	printf("CONFIG_FILE_PATH = \"%s\"\n", CONFIG_FILE_PATH);
+	printf("ACTIONS_SEARCH_PATH = \"%s\"\n", ACTIONS_SEARCH_PATH);
+	printf("ACTION_PREFIX = \"%s\"\n", ACTION_PREFIX);
+#if defined(WITH_MEDIA_AUTODETECT)
+	printf("WITH_MEDIA_AUTODETECT = yes\n");
+#else
+	printf("WITH_MEDIA_AUTODETECT = no\n");
+#endif
+#if defined(NDEBUG)
+	printf("NDEBUG = yes (Release build)\n");
+#else
+	printf("NDEBUG = no (Debug build)\n");
+#endif
+}

src/main/builtin_feats.h

@@ -0,0 +1,23 @@
+/* Copyright 2015, Michele Santullo
+ * This file is part of "dindexer".
+ *
+ * "dindexer" is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * "dindexer" is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with "dindexer".  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef id17B851C76AD54C8B9A2098323FC83038
+#define id17B851C76AD54C8B9A2098323FC83038
+
+void print_builtin_feats ( void );
+
+#endif

src/main/main.c

@@ -23,10 +23,12 @@
 #include "dindexerConfig.h"
 #include "findactions.h"
 #include "helpers/lengthof.h"
+#include "builtin_feats.h"
 
-static size_t foreach_avail_action ( int(*parFunc)(const char*, const char*), char** parList, size_t parCount, char* parPass );
-static int printf_stderr ( const char* parMsg, const char* parUnused );
-static int same_action ( const char* parAction1, const char* parAction2 );
+static size_t foreach_avail_action ( int(*parFunc)(const char*, const void*), char** parList, size_t parCount, const void* parPass );
+static int printf_stream ( const char* parMsg, const void* parStream );
+static int same_action ( const char* parAction1, const void* parAction2 );
+static void print_usage ( void );
 
 int main (int parArgc, char* parArgv[]) {
 	size_t z;
@@ -36,6 +38,8 @@ int main (int parArgc, char* parArgv[]) {
 	size_t action_path_length;
 	size_t selected_action;
 	char** argv;
+	FILE* streamout;
+	int retval;
 
 	find_actions(&actions, &actions_count);
 	if (0 == actions_count) {
@@ -44,22 +48,33 @@ int main (int parArgc, char* parArgv[]) {
 	}
 
 	if (parArgc < 2 or strcmp("-h", parArgv[1]) == 0 or strcmp("--help", parArgv[1]) == 0) {
-		fprintf(stderr, "No action specified. Available actions are:\n");
-		foreach_avail_action(&printf_stderr, actions, actions_count, NULL);
-		free_actions(actions, actions_count);
 		if (parArgc < 2) {
-			return 2;
+			streamout = stderr;
+			fprintf(stderr, "No action specified. ");
+			retval = 2;
 		}
 		else {
-			return 0;
+			print_usage();
+			printf("\n");
+			streamout = stdout;
+			retval = 0;
 		}
+		fprintf(streamout, "Available actions are:\n");
+		foreach_avail_action(&printf_stream, actions, actions_count, streamout);
+		free_actions(actions, actions_count);
+		return retval;
+	}
+	else if (strcmp("--builtin", parArgv[1]) == 0) {
+		print_builtin_feats();
+		free_actions(actions, actions_count);
+		return 0;
 	}
 
 	selected_action = foreach_avail_action(&same_action, actions, actions_count, parArgv[1]);
 
 	if (actions_count == selected_action) {
 		fprintf(stderr, "Unrecognized action \"%s\" - available actions are:\n", parArgv[1]);
-		foreach_avail_action(&printf_stderr, actions, actions_count, NULL);
+		foreach_avail_action(&printf_stream, actions, actions_count, stderr);
 		free_actions(actions, actions_count);
 		return 2;
 	}
@@ -96,7 +111,7 @@ int main (int parArgc, char* parArgv[]) {
 	return 0;
 }
 
-static size_t foreach_avail_action(int(*parFunc)(const char*, const char*), char** parList, size_t parCount, char* parPass) {
+static size_t foreach_avail_action(int(*parFunc)(const char*, const void*), char** parList, size_t parCount, const void* parPass) {
 	size_t z;
 	const char* cmd_name_start;
 	int stop;
@@ -112,16 +127,23 @@ static size_t foreach_avail_action(int(*parFunc)(const char*, const char*), char
 	return z;
 }
 
-static int printf_stderr (const char* parMsg, const char* parUnused) {
-	fprintf(stderr, "\t%s\n", parMsg);
+static int printf_stream (const char* parMsg, const void* parStream) {
+	FILE* stream = (FILE*)parStream;
+	fprintf(stream, "\t%s\n", parMsg);
 	return 0;
 }
 
-static int same_action (const char* parAction1, const char* parAction2) {
-	if (0 == strcmp(parAction1, parAction2)) {
+static int same_action (const char* parAction1, const void* parAction2) {
+	const char* const action2 = (const char*)parAction2;
+	if (0 == strcmp(parAction1, action2)) {
 		return 1;
 	}
 	else {
 		return 0;
 	}
 }
+
+static void print_usage() {
+	printf("--help - show this help\n");
+	printf("--builtin - show build info\n");
+}

src/scan/CMakeLists.txt

@@ -1,13 +1,6 @@
 project(${bare_name}-scan CXX C)
 
-if (DINDEXER_WITH_MEDIA_AUTODETECT)
-	find_package(blkid)
-	if (NOT BLKID_FOUND)
-		message(STATUS "libblkid not found, media autodetection will be disabled")
-		set(DINDEXER_WITH_MEDIA_AUTODETECT OFF)
-	endif()
-endif()
-
+include(WithMediaAutodetect)
 find_package(Magic REQUIRED)
 
 add_executable(${PROJECT_NAME}