initial commit

src/nativeMain/kotlin/com/infendro/shell/Shell.native.kt

@@ -0,0 +1,34 @@
+package com.infendro.shell
+
+import kotlinx.cinterop.CPointer
+import kotlinx.cinterop.ExperimentalForeignApi
+import kotlinx.cinterop.refTo
+import kotlinx.cinterop.toKString
+import platform.posix.*
+
+@ExperimentalForeignApi
+internal actual suspend fun execute(
+    command: Array<String>,
+    directory: String?,
+): Shell.Result {
+    val command = command.joinToString(" ") { "\"$it\"" }
+    if (directory != null) {
+        chdir(directory)
+    }
+    val stream = popen(command, "r")!!
+    val value = stream.readLines().joinToString("")
+    val code = pclose(stream)
+    return Shell.Result(code, value)
+}
+
+@ExperimentalForeignApi
+private fun CPointer<FILE>.readLines(): List<String> {
+    val lines = mutableListOf<String>()
+    val buffer = ByteArray(4096)
+    while (true) {
+        val line = fgets(buffer.refTo(0), buffer.size, this)
+        if (line == null) break
+        lines.add(line.toKString())
+    }
+    return lines
+}