From: Jason Self <j@jxself.org>
Date: Mon, 28 Sep 2015 00:59:09 +0000 (-0700)
Subject: Better cmdline errors handling.
X-Git-Url: https://jxself.org/git/?p=skeinsum.git;a=commitdiff_plain;h=043c3bb487daea1b21c00443b8fd57bac9b20054

Better cmdline errors handling.
---

diff --git a/skein_cli.c b/skein_cli.c
index 04f8156..4378da6 100644
--- a/skein_cli.c
+++ b/skein_cli.c
@@ -441,6 +441,27 @@ int is_goodfile(const char filename[])
 	return 1;  /* try it as good */
 }
 
+int warn_check_opts(int quiet, int warn, int status)
+{
+	int n = 0;
+	if(quiet == 1)
+		n = WARN("the --quiet option is meaningful only when verifying checksums\n");
+	if(status ==1)
+		n = WARN("the --status option is meaningful only when verifying checksums\n");
+	if(warn == 1)
+		n = WARN("the --warn option is meaningful only when verifying checksums\n");
+	return n;
+}
+
+int warn_gen_opts(int tag, int binary)
+{
+	int n = 0;
+	if (tag == 1)
+		n = WARN("the --tag option is meaningful only when calculating file checksums\n");
+	if (binary >= 0)
+		n = WARN("the --text and --binary options are meaningful only when calculating file checksums\n");
+	return n;
+}
 
 int main(int argc, char** argv)
 {
@@ -485,6 +506,9 @@ int main(int argc, char** argv)
 
 	if (hashString > 0)
 	{
+		if (warn_check_opts(quiet, warn, status) + warn_gen_opts(tag, binary))
+			TRYHELP_GOODBYE();
+
 		int n = first_file;
 		if (n >= argc) {
 			WARN("command line should contain strings for hashing\n");
@@ -497,16 +521,8 @@ int main(int argc, char** argv)
 
 	if (check < 0)   /* READ FILES, GENERATE CHECKSUMS AND PRINT TO STDOUT.. */
 	{
-		if (quiet == 1 || warn == 1 || status == 1)
-		{
-			if(quiet == 1)
-				WARN("the --quiet option is meaningful only when verifying checksums\n");
-			if(status ==1)
-				WARN("the --status option is meaningful only when verifying checksums\n");
-			if(warn == 1)
-				WARN("the --warn option is meaningful only when verifying checksums\n");
+		if (warn_check_opts(quiet, warn, status))
 			TRYHELP_GOODBYE();
-		}
 
 		char mode = binary > 0 ? 'b' : 't';
 
@@ -537,14 +553,8 @@ int main(int argc, char** argv)
 
 	if (check == 1)   /* READ LISTFILES, GENERATE HASHES, COMPARE WITH STORED, PRINT RESULT */
 	{
-		if (tag == 1 || binary >= 0)
-		{
-			if (tag == 1)
-				WARN("the --tag option is meaningless when verifying checksums\n");
-			if (binary >= 0)
-				WARN("the --text and --binary options are meaningless when verifying checksums\n");
+		if (warn_gen_opts(tag, binary))
 			TRYHELP_GOODBYE();
-		}
 
 		int file_index;
 		for (file_index = first_file; file_index < argc; file_index++)