Use common code and simplify error message
Signed-off-by: Michael Tokarev <m...@tls.msk.ru>
---
qemu-img.c | 63 ++++++++++++++++--------------------------------------
1 file changed, 18 insertions(+), 45 deletions(-)
diff --git a/qemu-img.c b/qemu-img.c
index 7edfc56572..4e962843da 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -145,6 +145,17 @@ void cmd_help(const img_cmd_t *ccmd,
exit(EXIT_SUCCESS);
}
+static OutputFormat parse_output_format(const img_cmd_t *ccmd, const char *arg)
+{
+ if (!strcmp(arg, "json")) {
+ return OFORMAT_JSON;
+ } else if (!strcmp(arg, "human")) {
+ return OFORMAT_HUMAN;
+ } else {
+ error_exit(ccmd, "--output expects 'human' or 'json' not '%s'", arg);
+ }
+}
+
/* Please keep in synch with docs/tools/qemu-img.rst */
static G_NORETURN
void help(void)
@@ -763,7 +774,7 @@ static int img_check(const img_cmd_t *ccmd, int argc, char
**argv)
{
int c, ret;
OutputFormat output_format = OFORMAT_HUMAN;
- const char *filename, *fmt, *output, *cache;
+ const char *filename, *fmt, *cache;
BlockBackend *blk;
BlockDriverState *bs;
int fix = 0;
@@ -775,7 +786,6 @@ static int img_check(const img_cmd_t *ccmd, int argc, char
**argv)
bool force_share = false;
fmt = NULL;
- output = NULL;
cache = BDRV_DEFAULT_CACHE;
for(;;) {
@@ -821,7 +831,7 @@ static int img_check(const img_cmd_t *ccmd, int argc, char
**argv)
}
break;
case OPTION_OUTPUT:
- output = optarg;
+ output_format = parse_output_format(ccmd, optarg);
break;
case 'T':
cache = optarg;
@@ -845,15 +855,6 @@ static int img_check(const img_cmd_t *ccmd, int argc, char
**argv)
}
filename = argv[optind++];
- if (output && !strcmp(output, "json")) {
- output_format = OFORMAT_JSON;
- } else if (output && !strcmp(output, "human")) {
- output_format = OFORMAT_HUMAN;
- } else if (output) {
- error_report("--output must be used with human or json as argument.");
- return 1;
- }
-
ret = bdrv_parse_cache_mode(cache, &flags, &writethrough);
if (ret < 0) {
error_report("Invalid source cache option: %s", cache);
@@ -3047,13 +3048,12 @@ static int img_info(const img_cmd_t *ccmd, int argc,
char **argv)
int c;
OutputFormat output_format = OFORMAT_HUMAN;
bool chain = false;
- const char *filename, *fmt, *output;
+ const char *filename, *fmt;
BlockGraphInfoList *list;
bool image_opts = false;
bool force_share = false;
fmt = NULL;
- output = NULL;
for(;;) {
int option_index = 0;
static const struct option long_options[] = {
@@ -3088,7 +3088,7 @@ static int img_info(const img_cmd_t *ccmd, int argc, char
**argv)
force_share = true;
break;
case OPTION_OUTPUT:
- output = optarg;
+ output_format = parse_output_format(ccmd, optarg);
break;
case OPTION_BACKING_CHAIN:
chain = true;
@@ -3106,15 +3106,6 @@ static int img_info(const img_cmd_t *ccmd, int argc,
char **argv)
}
filename = argv[optind++];
- if (output && !strcmp(output, "json")) {
- output_format = OFORMAT_JSON;
- } else if (output && !strcmp(output, "human")) {
- output_format = OFORMAT_HUMAN;
- } else if (output) {
- error_report("--output must be used with human or json as argument.");
- return 1;
- }
-
list = collect_image_info_list(image_opts, filename, fmt, chain,
force_share);
if (!list) {
@@ -3273,7 +3264,7 @@ static int img_map(const img_cmd_t *ccmd, int argc, char
**argv)
OutputFormat output_format = OFORMAT_HUMAN;
BlockBackend *blk;
BlockDriverState *bs;
- const char *filename, *fmt, *output;
+ const char *filename, *fmt;
int64_t length;
MapEntry curr = { .length = 0 }, next;
int ret = 0;
@@ -3283,7 +3274,6 @@ static int img_map(const img_cmd_t *ccmd, int argc, char
**argv)
int64_t max_length = -1;
fmt = NULL;
- output = NULL;
for (;;) {
int option_index = 0;
static const struct option long_options[] = {
@@ -3319,7 +3309,7 @@ static int img_map(const img_cmd_t *ccmd, int argc, char
**argv)
force_share = true;
break;
case OPTION_OUTPUT:
- output = optarg;
+ output_format = parse_output_format(ccmd, optarg);
break;
case 's':
start_offset = cvtnum("start offset", optarg);
@@ -3346,15 +3336,6 @@ static int img_map(const img_cmd_t *ccmd, int argc, char
**argv)
}
filename = argv[optind];
- if (output && !strcmp(output, "json")) {
- output_format = OFORMAT_JSON;
- } else if (output && !strcmp(output, "human")) {
- output_format = OFORMAT_HUMAN;
- } else if (output) {
- error_report("--output must be used with human or json as argument.");
- return 1;
- }
-
blk = img_open(image_opts, filename, fmt, 0, false, false, force_share);
if (!blk) {
return 1;
@@ -5454,15 +5435,7 @@ static int img_measure(const img_cmd_t *ccmd, int argc,
char **argv)
image_opts = true;
break;
case OPTION_OUTPUT:
- if (!strcmp(optarg, "json")) {
- output_format = OFORMAT_JSON;
- } else if (!strcmp(optarg, "human")) {
- output_format = OFORMAT_HUMAN;
- } else {
- error_report("--output must be used with human or json "
- "as argument.");
- goto out;
- }
+ output_format = parse_output_format(ccmd, optarg);
break;
case OPTION_SIZE:
{
--
2.39.2
