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add json output mode (-J) (#87)

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This commit is contained in:
T.v.Dein
2025-10-14 07:18:30 +02:00
committed by GitHub
parent 736dd37f16
commit f1aa9d0000
8 changed files with 99 additions and 30 deletions
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6
cfg/config.go
View File

@@ -28,7 +28,7 @@ import (
)
const (
Version = "v1.5.10"
Version = "v1.5.11"
MAXPARTS = 2
)
@@ -141,6 +141,7 @@ type Modeflag struct {
Y bool
A bool
C bool
J bool
}
// used for switching printers
@@ -152,6 +153,7 @@ const (
Yaml
CSV
ASCII
Json
)
// various sort types
@@ -290,6 +292,8 @@ func (conf *Config) PrepareModeFlags(flag Modeflag) {
conf.OutputMode = Yaml
case flag.C:
conf.OutputMode = CSV
case flag.J:
conf.OutputMode = Json
default:
conf.OutputMode = ASCII
}

8
cmd/root.go
View File

@@ -135,13 +135,13 @@ func Execute() {
"Transpose the speficied columns (separated by ,)")
rootCmd.PersistentFlags().BoolVarP(&conf.Interactive, "interactive", "I", false,
"interactive mode")
rootCmd.PersistentFlags().StringVarP(&conf.OFS, "ofs", "", "",
rootCmd.PersistentFlags().StringVarP(&conf.OFS, "ofs", "o", "",
"Output field separator (' ' for ascii table, ',' for CSV)")
rootCmd.PersistentFlags().BoolVarP(&conf.InputJSON, "json", "j", false,
"JSON input mode")
rootCmd.PersistentFlags().BoolVarP(&conf.AutoHeaders, "auto-headers", "", false,
rootCmd.PersistentFlags().BoolVarP(&conf.AutoHeaders, "auto-headers", "g", false,
"Generate headers automatically")
rootCmd.PersistentFlags().StringVarP(&headers, "custom-headers", "", "",
rootCmd.PersistentFlags().StringVarP(&headers, "custom-headers", "x", "",
"Custom headers")
// sort options
@@ -171,6 +171,8 @@ func Execute() {
"Enable shell mode output")
rootCmd.PersistentFlags().BoolVarP(&modeflag.Y, "yaml", "Y", false,
"Enable yaml output")
rootCmd.PersistentFlags().BoolVarP(&modeflag.J, "jsonout", "J", false,
"Enable json output")
rootCmd.PersistentFlags().BoolVarP(&modeflag.C, "csv", "C", false,
"Enable CSV output")
rootCmd.PersistentFlags().BoolVarP(&modeflag.A, "ascii", "A", false,

28
cmd/shortusage.go
View File

@@ -1,16 +1,18 @@
package cmd
const shortusage = `tablizer [regex,...] [-r file] [flags]
-c col,... show specified columns -L highlight matching lines
-k col,... sort by specified columns -j read JSON input
-F col=reg filter field with regexp -v invert match
-T col,... transpose specified columns -n numberize columns
-R /from/to/ apply replacement to columns in -T -N do not use colors
-y col,... yank columns to clipboard -H do not show headers
--ofs char output field separator -s specify field separator
-r file read input from file -z use fuzzy search
-f file read config from file -I interactive filter mode
-d debug
-O org -C CSV -M md -X ext -S shell -Y yaml -D sort descending order
-m show manual --help show detailed help -v show version
-a sort by age -i sort numerically -t sort by time`
-c col,... show specified columns -L highlight matching lines
-k col,... sort by specified columns -j read JSON input
-F col=reg filter field with regexp -v invert match
-T col,... transpose specified columns -n numberize columns
-R /from/to/ apply replacement to columns in -T -N do not use colors
-y col,... yank columns to clipboard -H do not show headers
--ofs char output field separator -s specify field separator
-r file read input from file -z use fuzzy search
-f file read config from file -I interactive filter mode
-x col,... use custom headers -d debug
-o char use char as output separator -g auto generate headers
-O org -C CSV -M md -X ext -S shell -Y yaml -J json -D sort descending order
-m show manual --help show detailed help -v show version
-a sort by age -i sort numerically -t sort by time`

14
cmd/tablizer.go
View File

@@ -22,8 +22,8 @@ SYNOPSIS
-R, --regex-transposer </from/to/> Apply /search/replace/ regexp to fields given in -T
-j, --json Read JSON input (must be array of hashes)
-I, --interactive Interactively filter and select rows
--auto-headers Generate headers if there are none present in input
--custom-headers a,b,... Use custom headers, separated by comma
-g, --auto-headers Generate headers if there are none present in input
-x, --custom-headers a,b,... Use custom headers, separated by comma
Output Flags (mutually exclusive):
-X, --extended Enable extended output
@@ -31,12 +31,13 @@ SYNOPSIS
-O, --orgtbl Enable org-mode table output
-S, --shell Enable shell evaluable output
-Y, --yaml Enable yaml output
-J, --jsonout Enable JSON output
-C, --csv Enable CSV output
-A, --ascii Default output mode, ascii tabular
-L, --hightlight-lines Use alternating background colors for tables
-o, --ofs <char> Output field separator, used by -A and -C.
-y, --yank-columns Yank specified columns (separated by ,) to clipboard,
space separated
--ofs <char> Output field separator, used by -A and -C.
Sort Mode Flags (mutually exclusive):
-a, --sort-age sort according to age (duration) string
@@ -519,8 +520,8 @@ Operational Flags:
-R, --regex-transposer </from/to/> Apply /search/replace/ regexp to fields given in -T
-j, --json Read JSON input (must be array of hashes)
-I, --interactive Interactively filter and select rows
--auto-headers Generate headers if there are none present in input
--custom-headers a,b,... Use custom headers, separated by comma
-g, --auto-headers Generate headers if there are none present in input
-x, --custom-headers a,b,... Use custom headers, separated by comma
Output Flags (mutually exclusive):
-X, --extended Enable extended output
@@ -528,12 +529,13 @@ Output Flags (mutually exclusive):
-O, --orgtbl Enable org-mode table output
-S, --shell Enable shell evaluable output
-Y, --yaml Enable yaml output
-J, --jsonout Enable JSON output
-C, --csv Enable CSV output
-A, --ascii Default output mode, ascii tabular
-L, --hightlight-lines Use alternating background colors for tables
-o, --ofs <char> Output field separator, used by -A and -C.
-y, --yank-columns Yank specified columns (separated by ,) to clipboard,
space separated
--ofs <char> Output field separator, used by -A and -C.
Sort Mode Flags (mutually exclusive):
-a, --sort-age sort according to age (duration) string

32
lib/printer.go
View File

@@ -19,6 +19,7 @@ package lib
import (
"encoding/csv"
"encoding/json"
"fmt"
"io"
"log"
@@ -61,6 +62,8 @@ func printData(writer io.Writer, conf cfg.Config, data *Tabdata) {
printShellData(writer, data)
case cfg.Yaml:
printYamlData(writer, data)
case cfg.Json:
printJsonData(writer, data)
case cfg.CSV:
printCSVData(writer, conf, data)
default:
@@ -291,6 +294,35 @@ func printShellData(writer io.Writer, data *Tabdata) {
output(writer, out)
}
func printJsonData(writer io.Writer, data *Tabdata) {
objlist := make([]map[string]any, len(data.entries))
if len(data.entries) > 0 {
for i, entry := range data.entries {
obj := make(map[string]any, len(entry))
for idx, value := range entry {
num, err := strconv.Atoi(value)
if err == nil {
obj[data.headers[idx]] = num
} else {
obj[data.headers[idx]] = value
}
}
objlist[i] = obj
}
}
jsonstr, err := json.MarshalIndent(&objlist, "", " ")
if err != nil {
log.Fatal(err)
}
output(writer, string(jsonstr))
}
func printYamlData(writer io.Writer, data *Tabdata) {
type Data struct {
Entries []map[string]interface{} `yaml:"entries"`

25
lib/printer_test.go
View File

@@ -125,6 +125,31 @@ ceta,33d12h,9,06/Jan/2008 15:04:05 -0700`,
NAME="beta" DURATION="1d10h5m1s" COUNT="33" WHEN="3/1/2014"
NAME="alpha" DURATION="4h35m" COUNT="170" WHEN="2013-Feb-03"
NAME="ceta" DURATION="33d12h" COUNT="9" WHEN="06/Jan/2008 15:04:05 -0700"`,
},
{
name: "json",
mode: cfg.Json,
numberize: false,
expect: `[
{
"COUNT": 33,
"DURATION": "1d10h5m1s",
"NAME": "beta",
"WHEN": "3/1/2014"
},
{
"COUNT": 170,
"DURATION": "4h35m",
"NAME": "alpha",
"WHEN": "2013-Feb-03"
},
{
"COUNT": 9,
"DURATION": "33d12h",
"NAME": "ceta",
"WHEN": "06/Jan/2008 15:04:05 -0700"
}
]`,
},
{
name: "yaml",

9
tablizer.1
View File

@@ -133,7 +133,7 @@
.\" ========================================================================
.\"
.IX Title "TABLIZER 1"
.TH TABLIZER 1 "2025-10-10" "1" "User Commands"
.TH TABLIZER 1 "2025-10-13" "1" "User Commands"
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
@@ -160,8 +160,8 @@ tablizer \- Manipulate tabular output of other programs
\& \-R, \-\-regex\-transposer </from/to/> Apply /search/replace/ regexp to fields given in \-T
\& \-j, \-\-json Read JSON input (must be array of hashes)
\& \-I, \-\-interactive Interactively filter and select rows
\& \-\-auto\-headers Generate headers if there are none present in input
\& \-\-custom\-headers a,b,... Use custom headers, separated by comma
\& \-g, \-\-auto\-headers Generate headers if there are none present in input
\& \-x, \-\-custom\-headers a,b,... Use custom headers, separated by comma
\&
\& Output Flags (mutually exclusive):
\& \-X, \-\-extended Enable extended output
@@ -169,12 +169,13 @@ tablizer \- Manipulate tabular output of other programs
\& \-O, \-\-orgtbl Enable org\-mode table output
\& \-S, \-\-shell Enable shell evaluable output
\& \-Y, \-\-yaml Enable yaml output
\& \-J, \-\-jsonout Enable JSON output
\& \-C, \-\-csv Enable CSV output
\& \-A, \-\-ascii Default output mode, ascii tabular
\& \-L, \-\-hightlight\-lines Use alternating background colors for tables
\& \-o, \-\-ofs <char> Output field separator, used by \-A and \-C.
\& \-y, \-\-yank\-columns Yank specified columns (separated by ,) to clipboard,
\& space separated
\& \-\-ofs <char> Output field separator, used by \-A and \-C.
\&
\& Sort Mode Flags (mutually exclusive):
\& \-a, \-\-sort\-age sort according to age (duration) string

7
tablizer.pod
View File

@@ -21,8 +21,8 @@ tablizer - Manipulate tabular output of other programs
-R, --regex-transposer </from/to/> Apply /search/replace/ regexp to fields given in -T
-j, --json Read JSON input (must be array of hashes)
-I, --interactive Interactively filter and select rows
--auto-headers Generate headers if there are none present in input
--custom-headers a,b,... Use custom headers, separated by comma
-g, --auto-headers Generate headers if there are none present in input
-x, --custom-headers a,b,... Use custom headers, separated by comma
Output Flags (mutually exclusive):
-X, --extended Enable extended output
@@ -30,12 +30,13 @@ tablizer - Manipulate tabular output of other programs
-O, --orgtbl Enable org-mode table output
-S, --shell Enable shell evaluable output
-Y, --yaml Enable yaml output
-J, --jsonout Enable JSON output
-C, --csv Enable CSV output
-A, --ascii Default output mode, ascii tabular
-L, --hightlight-lines Use alternating background colors for tables
-o, --ofs <char> Output field separator, used by -A and -C.
-y, --yank-columns Yank specified columns (separated by ,) to clipboard,
space separated
--ofs <char> Output field separator, used by -A and -C.
Sort Mode Flags (mutually exclusive):
-a, --sort-age sort according to age (duration) string