mirror of
https://github.com/ericonr/util-linux.git
synced 2024-04-21 09:12:35 -05:00
3c7355dd63
This patch add support to format multi-line cells (columns with
SCOLS_FL_WRAP) to arrays in JSON output.
For example mountpoints[] in lsblk output:
Normal output:
$ lsblk -oNAME,FSTYPE,TYPE,MOUNTPOINTS /dev/sdc1
NAME FSTYPE TYPE MOUNTPOINTS
sdc1 btrfs part /mnt/A
/mnt/test
/mnt/B
JSON output:
$ lsblk -J -oNAME,FSTYPE,TYPE,MOUNTPOINTS /dev/sdc1
{
"blockdevices": [
{
"name": "sdc1",
"fstype": "btrfs",
"type": "part",
"mountpoints": [
"/mnt/A",
"/mnt/test",
"/mnt/B"
]
}
]
}
Signed-off-by: Karel Zak <kzak@redhat.com>
129 lines
2.6 KiB
C
129 lines
2.6 KiB
C
/*
|
|
* JSON output formatting functions.
|
|
*
|
|
* No copyright is claimed. This code is in the public domain; do with
|
|
* it what you wish.
|
|
*
|
|
* Written by Karel Zak <kzak@redhat.com>
|
|
*/
|
|
#include <stdio.h>
|
|
#include <inttypes.h>
|
|
|
|
#include "c.h"
|
|
#include "carefulputc.h"
|
|
#include "jsonwrt.h"
|
|
|
|
|
|
void ul_jsonwrt_init(struct ul_jsonwrt *fmt, FILE *out, int indent)
|
|
{
|
|
fmt->out = out;
|
|
fmt->indent = indent;
|
|
}
|
|
|
|
void ul_jsonwrt_indent(struct ul_jsonwrt *fmt)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < fmt->indent; i++)
|
|
fputs(" ", fmt->out);
|
|
}
|
|
|
|
void ul_jsonwrt_open(struct ul_jsonwrt *fmt, const char *name, int type)
|
|
{
|
|
if (fmt->postponed_break && !name)
|
|
;
|
|
else {
|
|
ul_jsonwrt_indent(fmt);
|
|
if (name)
|
|
fputs_quoted_json_lower(name, fmt->out);
|
|
}
|
|
|
|
switch (type) {
|
|
case UL_JSON_OBJECT:
|
|
fputs(name ? ": {\n" : "{\n", fmt->out);
|
|
fmt->indent++;
|
|
break;
|
|
case UL_JSON_ARRAY:
|
|
fputs(name ? ": [\n" : "[\n", fmt->out);
|
|
fmt->indent++;
|
|
break;
|
|
case UL_JSON_VALUE:
|
|
fputs(name ? ": " : " ", fmt->out);
|
|
break;
|
|
}
|
|
fmt->postponed_break = 0;
|
|
}
|
|
|
|
void ul_jsonwrt_close(struct ul_jsonwrt *fmt, int type, int islast)
|
|
{
|
|
if (fmt->indent == 0) {
|
|
fputs("}\n", fmt->out);
|
|
fmt->indent--;
|
|
return;
|
|
}
|
|
assert(fmt->indent > 0);
|
|
|
|
switch (type) {
|
|
case UL_JSON_OBJECT:
|
|
fmt->indent--;
|
|
ul_jsonwrt_indent(fmt);
|
|
fputs(islast ? "}" : "},", fmt->out);
|
|
break;
|
|
case UL_JSON_ARRAY:
|
|
fmt->indent--;
|
|
ul_jsonwrt_indent(fmt);
|
|
fputs(islast ? "]" : "],", fmt->out);
|
|
break;
|
|
case UL_JSON_VALUE:
|
|
if (!islast)
|
|
fputc(',', fmt->out);
|
|
break;
|
|
}
|
|
|
|
if (!islast && (type == UL_JSON_OBJECT || type == UL_JSON_ARRAY))
|
|
fmt->postponed_break = 1;
|
|
else {
|
|
fputc('\n', fmt->out);
|
|
fmt->postponed_break = 0;
|
|
}
|
|
}
|
|
|
|
void ul_jsonwrt_value_raw(struct ul_jsonwrt *fmt,
|
|
const char *name, const char *data, int islast)
|
|
{
|
|
ul_jsonwrt_value_open(fmt, name);
|
|
if (data && *data)
|
|
fputs(data, fmt->out);
|
|
else
|
|
fputs("null", fmt->out);
|
|
ul_jsonwrt_value_close(fmt, islast);
|
|
}
|
|
|
|
void ul_jsonwrt_value_s(struct ul_jsonwrt *fmt,
|
|
const char *name, const char *data, int islast)
|
|
{
|
|
ul_jsonwrt_value_open(fmt, name);
|
|
if (data && *data)
|
|
fputs_quoted_json(data, fmt->out);
|
|
else
|
|
fputs("null", fmt->out);
|
|
ul_jsonwrt_value_close(fmt, islast);
|
|
}
|
|
|
|
void ul_jsonwrt_value_u64(struct ul_jsonwrt *fmt,
|
|
const char *name, uint64_t data, int islast)
|
|
{
|
|
ul_jsonwrt_value_open(fmt, name);
|
|
fprintf(fmt->out, "%"PRIu64, data);
|
|
ul_jsonwrt_value_close(fmt, islast);
|
|
}
|
|
|
|
void ul_jsonwrt_value_boolean(struct ul_jsonwrt *fmt,
|
|
const char *name, int data, int islast)
|
|
{
|
|
ul_jsonwrt_value_open(fmt, name);
|
|
fputs(data ? "true" : "false", fmt->out);
|
|
ul_jsonwrt_value_close(fmt, islast);
|
|
}
|
|
|