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libdm: report: use 'null' for undefined numeric values in JSON_STD output

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For JSON_STD format, use 'null' if a field has no value at all.

In JSON format, we print undefined numeric values this way:

  "key" = ""

while in JSON_STD format, we print undefined numeric values this way:

  "key" = null

(Keep in mind that 'null' is different from 0 (zero value) which is
a defined value.)
This commit is contained in:
Peter Rajnoha 2022-06-29 16:00:25 +02:00
parent 99299eb728
commit 1e31621ceb
2 changed files with 14 additions and 2 deletions
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6
device_mapper/libdm-report.c
View File

@ -4360,6 +4360,7 @@ static int _sort_rows(struct dm_report *rh)
#define JSON_ARRAY_START "["
#define JSON_ARRAY_END "]"
#define JSON_ESCAPE_CHAR "\\"
#define JSON_NULL "null"
#define UNABLE_TO_EXTEND_OUTPUT_LINE_MSG "dm_report: Unable to extend output line"
@ -4449,8 +4450,13 @@ static int _output_field(struct dm_report *rh, struct dm_report_field *field)
}
}
if (_is_json_std_report(rh) && _is_pure_numeric_field(field) && !*field->report_string)
repstr = JSON_NULL;
else
repstr = field->report_string;
width = field->props->width;
if (!(rh->flags & DM_REPORT_OUTPUT_ALIGNED)) {
if (_is_json_report(rh)) {
/* Escape any JSON_QUOTE that may appear in reported string. */

6
libdm/libdm-report.c
View File

@ -4359,6 +4359,7 @@ static int _sort_rows(struct dm_report *rh)
#define JSON_ARRAY_START "["
#define JSON_ARRAY_END "]"
#define JSON_ESCAPE_CHAR "\\"
#define JSON_NULL "null"
#define UNABLE_TO_EXTEND_OUTPUT_LINE_MSG "dm_report: Unable to extend output line"
@ -4448,8 +4449,13 @@ static int _output_field(struct dm_report *rh, struct dm_report_field *field)
}
}
if (_is_json_std_report(rh) && _is_pure_numeric_field(field) && !*field->report_string)
repstr = JSON_NULL;
else
repstr = field->report_string;
width = field->props->width;
if (!(rh->flags & DM_REPORT_OUTPUT_ALIGNED)) {
if (_is_json_report(rh)) {
/* Escape any JSON_QUOTE that may appear in reported string. */