 |
show usage on invalid flags or any arguments - json2tsv - JSON to TSV converter |
 |
git clone git://git.codemadness.org/json2tsv |
 |
Log |
|
Files |
|
Refs |
|
README |
|
LICENSE |
|
--- |
|
commit f4ae5c240dbe7ca52eb9b7a7ab0a94a4fe3b6f06 |
|
parent e569792c8bc41e19f1702ae57bbfbebc9fc64bff |
|
Author: Hiltjo Posthuma <[email protected]> |
|
Date: Sun, 29 Dec 2019 18:42:53 +0100 |
|
|
|
show usage on invalid flags or any arguments |
|
|
|
Diffstat: |
|
M json2tsv.c | 12 ++++++++++-- |
|
|
|
1 file changed, 10 insertions(+), 2 deletions(-) |
|
--- |
|
diff --git a/json2tsv.c b/json2tsv.c |
|
@@ -66,6 +66,13 @@ processnode(struct json_node *nodes, size_t depth, const cha… |
|
putchar('\n'); |
|
} |
|
|
|
+void |
|
+usage(const char *argv0) |
|
+{ |
|
+ fprintf(stderr, "usage: %s [-n] [-r]\n", argv0); |
|
+ exit(1); |
|
+} |
|
+ |
|
int |
|
main(int argc, char *argv[]) |
|
{ |
|
@@ -77,12 +84,13 @@ main(int argc, char *argv[]) |
|
} |
|
|
|
for (i = 1; i < argc; i++) { |
|
- if (argv[i][0] != '-') |
|
- continue; |
|
+ if (argv[i][0] != '-' || argv[i][1] == '\0') |
|
+ usage(argv[0]); |
|
for (j = 1; argv[i][j]; j++) { |
|
switch (argv[i][j]) { |
|
case 'n': nflag = 1; break; |
|
case 'r': rflag = 1; break; |
|
+ default: usage(argv[0]); break; |
|
} |
|
} |
|
} |
