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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"
)
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 "ls": // List tables
choice = 1
case "edit": // Import table
choice = 3
table = os.Args[2]
case "run": // Run query
choice = 2
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:
ls List tables
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
}
}
// Menu loop. 1. Read tale names 2. Run query 3. Run and save query 4. Execute Dolt command 5. Exit
for {
// Execute choice
switch choice {
case 1:
// Read table names
ReadTableNames()
case 2:
if query == "" {
// Request query
fmt.Print("Enter your query: ")
fmt.Scanln(&query)
}
// Table name will be empty. Run query
RunSQL(query, "")
case 3:
if table == "" {
// Request table name
fmt.Print("Enter your table name: ")
fmt.Scanln(&table)
}
// Run query
RunSQL("select * from "+table+";", table)
case 4:
if len(args) == 0 {
// Request command. Make dolt bold
fmt.Print("\033[1mdolt\033[0m ")
argstr := ""
fmt.Scanln(&argstr)
args = strings.Split(argstr, " ")
}
// Execute command
ExecuteDoltCommand(args...)
case 5:
// Exit
return
}
// If noninteractive, exit
if noninteractive {
return
}
// End of display
fmt.Print("Press enter to continue...")
fmt.Scanln()
// Clear screen
fmt.Print("\033[H\033[2J")
// Reset choice
choice = 0
// Print menu
fmt.Println("1. Read table names")
fmt.Println("2. Run query")
fmt.Println("3. Edit table")
fmt.Println("4. Execute Dolt command")
fmt.Println("5. Exit")
fmt.Print("Enter your choice: ")
// Read user input
fmt.Scanln(&choice)
// Reset all variables except choice
table = ""
query = ""
args = []string{}
}
}
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() {
// Run dolt ls
cmd := exec.Command("dolt", "ls")
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
cmd.Stdin = os.Stdin
cmd.Run()
}
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()
}
|