X-Git-Url: http://git.tuebingen.mpg.de/?p=adu.git;a=blobdiff_plain;f=adu.c;h=8ce7317cdd207719f924523a0d7aa5ca32fcf288;hp=47eee7762cbb5b04a4f5d2156d58e279ad415de4;hb=fd37e9fafb8fd103b530ab45f0624fb5d67c0a89;hpb=e6b9f49fcde364aeff6c0d38e66694eeac0573b4

diff --git a/adu.c b/adu.c
index 47eee77..8ce7317 100644
--- a/adu.c
+++ b/adu.c
@@ -1,6 +1,8 @@
 #include "adu.h"
 #include <dirent.h> /* readdir() */
 #include <pwd.h>
+#include "format.h"
+#include "select.h"
 
 #include "gcc-compat.h"
 #include "cmdline.h"
@@ -139,6 +141,15 @@ static struct osl_table_description dir_table_desc = {
 	.column_descriptions = dir_table_cols,
 };
 
+/*
+ * The columns of the per-user tables.
+ *
+ * Adu tracks disk usage on a per-user basis. For each user, a user table is
+ * being created. The rows of the user table have three columns: The directory
+ * number that may be resolved to the path using the directory table, the
+ * number of bytes and the number of files in that directory owned by the given
+ * user.
+ */
 static struct osl_column_description user_table_cols[] = {
 	[UT_DIR_NUM] = {
 		.storage_type = OSL_MAPPED_STORAGE,
@@ -457,18 +468,55 @@ static int check_args(void)
 	return 1;
 }
 
+static int print_complete_help_and_die(void)
+{
+	const char **line;
+	select_cmdline_parser_init(&select_conf);
+
+	if (conf.help_given)
+		line = gengetopt_args_info_help;
+	else
+		line = gengetopt_args_info_detailed_help;
+
+	printf("adu command line options:\n");
+	printf("=========================\n");
+	for (; *line; line++)
+		printf("%s\n", *line);
+	if (conf.help_given)
+		line = select_args_info_help;
+	else
+		line  = select_args_info_detailed_help;
+	printf("select options:\n");
+	printf("===============\n");
+	for (; *line; line++)
+		printf("%s\n", *line);
+	printf("interactive commands:\n");
+	printf("=====================\n");
+	print_interactive_help();
+	exit(EXIT_FAILURE);
+}
+
 int main(int argc, char **argv)
 {
 	int ret;
 	struct cmdline_parser_params params = {
 		.override = 0,
 		.initialize = 1,
-		.check_required = 1,
-		.check_ambiguity = 1,
-		.print_errors = 1
+		.check_required = 0,
+		.check_ambiguity = 0,
+		.print_errors = 0
 	};
+	/* ignore errors and print complete help if --help was given */
+	cmdline_parser_ext(argc, argv, &conf, &params);
+	if (conf.help_given || conf.detailed_help_given)
+		print_complete_help_and_die();
+	params.check_required = 1;
+	params.check_ambiguity = 1;
+	params.print_errors = 1;
+	ret = cmdline_parser_ext(argc, argv, &conf, &params);
+	if (ret)
+		exit(EXIT_FAILURE);
 
-	cmdline_parser_ext(argc, argv, &conf, &params); /* aborts on errors */
 	ret = check_args();
 	if (ret < 0)
 		goto out;