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|
// Debby is a command line tool that links your dolt database to visidata
package main
import (
"fmt"
"os"
"os/exec"
"strings"
"sync"
"bufio"
)
var once = sync.Once{}
func main() {
var choice int
var table string
var query string
var args []string
var noninteractive bool
if len(os.Args) > 1 {
noninteractive = true
switch os.Args[1] {
case "edit": // Import table
choice = 2
table = os.Args[2]
case "run": // Run query
choice = 1
query = strings.Join(os.Args[2:], " ")
case "help": // Print help
str := `debby is a command line tool that links your dolt database to visidata
Usage:
debby [command] [arguments]
The commands are:
edit Import table
run Run query
help Print help
Runnning debby without any arguments will start debby in interactive mode.
Running debby with any other arguments will run it as a dolt command.`
fmt.Println(str)
return
default: // Run dolt command
choice = 3
args = os.Args[1:]
}
}
// Menu loop. 1. Run query 2. Edit a table 3. Execute Dolt command 4. Exit
for {
tables := ReadTableNames()
// Execute choice
switch choice {
case 1:
if query == "" {
// Request query
fmt.Print("Enter your query: ")
query = Readline()
}
// Table name will be empty. Run query
RunSQL(query, "")
case 2:
if table == "" {
// Request table name
fmt.Print("Enter your table name: ")
table = Readline()
}
// Run query
RunSQL("select * from "+table+";", table)
case 3:
if len(args) == 0 {
// Request command. Make dolt bold
fmt.Print("\033[1mdolt\033[0m ")
argstr := Readline()
args = strings.Split(argstr, " ")
}
// Execute command
ExecuteDoltCommand(args...)
case 4:
// Exit
return
}
// If noninteractive, exit
if noninteractive {
return
}
choice = 0
// Print menu
// List tables sequentially
fmt.Print("Tables: ")
for _, t := range tables {
fmt.Printf(" %s -", t)
}
fmt.Println()
fmt.Print("1. Run query ")
fmt.Print("2. Edit table ")
fmt.Print("3. Execute Dolt command ")
fmt.Print("4. Exit ")
fmt.Print("- Enter your choice: ")
// Read user input
choicestr := Readline()
choice = int(choicestr[0] - '0')
// Reset all variables except choice
table = ""
query = ""
args = []string{}
}
}
func Readline() string {
// Read a line from stdin
reader := bufio.NewReader(os.Stdin)
text, _ := reader.ReadString('\n')
return text[:len(text)-1]
}
func ExecuteDoltCommand(args ...string) {
cmd := exec.Command("dolt", args...)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
cmd.Stdin = os.Stdin
cmd.Run()
}
func SaveToTable(table, file string) error {
// Run dolt table import -r table file
cmd := exec.Command("dolt", "table", "import", "-r", table, file)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
cmd.Stdin = os.Stdin
return cmd.Run()
}
func ReadTableNames() []string {
// Run dolt ls, ignore the first line and strip spaces for each following line
cmd := exec.Command("dolt", "ls")
cmd.Stderr = os.Stderr
out, err := cmd.Output()
if err != nil {
return []string{}
}
lines := strings.Split(string(out), "\n")
tables := []string{}
for i, line := range lines {
line = strings.TrimSpace(line)
if i == 0 || line == "" {
continue
}
tables = append(tables, line)
}
return tables
}
func RunSQL(query, table string) error {
// Create a temporary file to open in visidata
f, err := os.CreateTemp("", "debby-*.csv")
if err != nil {
return err
}
defer os.Remove(f.Name())
// Run the query and write the output to the file
cmd := exec.Command("dolt", "sql", "-q", query, "-r", "csv")
cmd.Stdout = f
err = cmd.Run()
if err != nil {
return err
}
// Open the file in visidata
OpenVisidata(f.Name(), "-f", "csv")
// If table is not empty, save the file to the table
if table != "" {
fmt.Println("Saving to table...")
err = SaveToTable(table, f.Name())
if err != nil {
return err
}
}
// Read the file back into memory
return nil
}
func OpenVisidata(args ...string) {
vdcmd := "echo No visidata found, trying to run: vd "
once.Do(func() {
// run with --version and check if it returns saul.pw/VisiData, if not try the same with visidata instead
for _, cmd := range []string{"vd", "visidata"} {
out, err := exec.Command(cmd, "--version").Output()
if err != nil {
continue
}
if strings.Contains(string(out), "saul.pw/VisiData") {
vdcmd = cmd
break
}
}
})
cmd := exec.Command(vdcmd, args...)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
cmd.Stdin = os.Stdin
cmd.Run()
}
|
