This is a kotlin native gradle Multiplatform MultiProject.
It demonstrates how to write platform independent bash shell scripting with pure kotlin.
project :cli is a jvm/macosX64/linuxX64/Windows-MingwX64 clikt based command line client
project :lib is a jvm/macosX64/linuxX64/Windows-MingwX64 library for:
- executing (bash based) shell scripts on any above platform and provide their output to kotlin code
- output of executed commands can also be
tee'd to stdout - output of executed commands can be
tee'd with a beautifull console frame around the output
- output of executed commands can also be
- console readLine for input and echo methods for output on all above platforms
executable on the following target platforms:
- jvm (uses ProcessBuilder("/bin/bash", "-c", commandString))
- macosX64
- linuxX64
- Windows mingwX64 (unverified)
./cli/src/commonMain/kotlin/com/hoffi/mpp/cli/App.kt
set working dir not implemented yet (it is always ./)
./gradlew clean build
be sure to run from project root as ./echoArgs.sh is there.
cli.kexe --help
Usage: app [OPTIONS]
Options:
--count INT Number of greetings
--name TEXT The person to greet
-h, --help Show this message and exit
java -jar cli/build/libs/cli-1.0.0-fat.jar --name jvm --count=5
cli/build/bin/mac/releaseExecutable/cli.kexe --name Mac
cli/build/bin/linux/releaseExecutable/cli.kexe --name Linux
cli/build/bin/windows/releaseExecutable/cli.kexe --name Windows
MppProcess.executeCommandFramed("""
echo "this xxx the first line" | sed 's/xxx/is/'
echo "some fancy second line" 'with both quotes' \
over multiple lines
""".trimIndent(), echoCmdToErr = true, teeStdout = true)╭╴echo "this xxx the first line" | sed 's/xxx/is/'
│ echo "some fancy second line" 'with both quotes' \
│ over multiple lines
├───────────────────────────────────────────────────
│ this is the first line
│ some fancy second line with both quotes over multiple lines
╰────────────────────────────────────────────────────────────
val userinput = Console.inputLine("Console input: ")
Console.echoErr("<stderr> input was: $userinput")Console input: asdf
stderr: input was: asdf
val cmd = """
ls -lsh \
-Fp | awk "match(\${'$'}0, /^(.*)(${'$'}(whoami))(.*)${'$'}/, m) { print m[1] \"redacted\" m[3]; next };1"
echo "multiple cmds possible"
val result: ProcessResult = MppProcess.executeCommandFramed(cmd, echoCmdToErr = true)
log.warn { "result code: ${result.returnCode}" }
...
""".trimIndent()╭╴ls -lsh \
│ -Fp | awk "match(\$0, /^(.*)($(whoami))(.*)$/, m) { print m[1] \"redacted\" m[3]; next };1"
│ echo "multiple cmds possible"
├───────────────────────────────────────────────────────────────────────────────────────────────
│ total 64
│ 8 -rw-r--r--@ 1 redacted staff 1.3K Apr 26 2021 README.md
│ 0 drwxr-xr-x 6 redacted staff 192B Nov 13 16:18 build/
│ 8 -rw-r--r-- 1 redacted staff 2.3K Nov 10 22:21 build.gradle.kts
│ 0 drwxr-xr-x@ 8 redacted staff 256B Aug 31 13:18 buildSrc/
│ 0 drwxr-xr-x 5 redacted staff 160B Nov 13 12:24 cli/
│ 8 -rwxr-xr-x 1 redacted staff 61B Apr 26 2021 echoArgs.sh
│ 0 drwxr-xr-x 3 redacted staff 96B Apr 23 2021 gradle/
│ 8 -rw-r--r-- 1 redacted staff 124B Apr 23 2021 gradle.properties
│ 16 -rwxr-xr-x 1 redacted staff 7.9K Aug 30 22:20 gradlew
│ 8 -rw-r--r-- 1 redacted staff 2.7K Aug 30 22:20 gradlew.bat
│ 0 drwxr-xr-x 5 redacted staff 160B Nov 13 12:24 lib/
│ 8 -rw-r--r-- 1 redacted staff 74B Apr 25 2021 settings.gradle.kts
│ multiple cmds possible
╰───────────────────────────────────────────────────────────────────────────────────────────────
16:20:02.722 [main] WARN com.hoffi.mppcli.cli.App - result code: 0
val result: ProcessResult = MppProcess.executeCommandFramed(cmd, echoCmdToErr = false)╭╴total 64
│ 8 -rw-r--r--@ 1 redacted staff 1.3K Apr 26 2021 README.md
│ 0 drwxr-xr-x 6 redacted staff 192B Nov 13 16:18 build/
│ 8 -rw-r--r-- 1 redacted staff 2.3K Nov 10 22:21 build.gradle.kts
│ 0 drwxr-xr-x@ 8 redacted staff 256B Aug 31 13:18 buildSrc/
│ 0 drwxr-xr-x 5 redacted staff 160B Nov 13 12:24 cli/
│ 8 -rwxr-xr-x 1 redacted staff 61B Apr 26 2021 echoArgs.sh
│ 0 drwxr-xr-x 3 redacted staff 96B Apr 23 2021 gradle/
│ 8 -rw-r--r-- 1 redacted staff 124B Apr 23 2021 gradle.properties
│ 16 -rwxr-xr-x 1 redacted staff 7.9K Aug 30 22:20 gradlew
│ 8 -rw-r--r-- 1 redacted staff 2.7K Aug 30 22:20 gradlew.bat
│ 0 drwxr-xr-x 5 redacted staff 160B Nov 13 12:24 lib/
│ 8 -rw-r--r-- 1 redacted staff 74B Apr 25 2021 settings.gradle.kts
│ multiple cmds possible
╰─────────────────────────────────────────────────────────────────────────
val result: ProcessResult = MppProcess.executeCommand(cmd, echoCmdToErr = true)-> ls -lsh \
-Fp | awk "match(\$0, /^(.*)($(whoami))(.*)$/, m) { print m[1] \"redacted\" m[3]; next };1"
echo "multiple cmds possible"
total 64
8 -rw-r--r--@ 1 redacted staff 1.3K Apr 26 2021 README.md
0 drwxr-xr-x 6 redacted staff 192B Nov 13 16:18 build/
8 -rw-r--r-- 1 redacted staff 2.3K Nov 10 22:21 build.gradle.kts
0 drwxr-xr-x@ 8 redacted staff 256B Aug 31 13:18 buildSrc/
0 drwxr-xr-x 5 redacted staff 160B Nov 13 12:24 cli/
8 -rwxr-xr-x 1 redacted staff 61B Apr 26 2021 echoArgs.sh
0 drwxr-xr-x 3 redacted staff 96B Apr 23 2021 gradle/
8 -rw-r--r-- 1 redacted staff 124B Apr 23 2021 gradle.properties
16 -rwxr-xr-x 1 redacted staff 7.9K Aug 30 22:20 gradlew
8 -rw-r--r-- 1 redacted staff 2.7K Aug 30 22:20 gradlew.bat
0 drwxr-xr-x 5 redacted staff 160B Nov 13 12:24 lib/
8 -rw-r--r-- 1 redacted staff 74B Apr 25 2021 settings.gradle.kts
multiple cmds possible
val result: ProcessResult = MppProcess.executeCommand(cmd, echoCmdToErr = false)
val output: String = result.outputLines.joinToString("\n")
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