95 lines
1.9 KiB
V
95 lines
1.9 KiB
V
module vexecutor
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import strings
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import os { Result, fileno }
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import freeflowuniverse.herolib.ui.console
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fn vpopen(path string) voidptr {
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// *C.FILE {
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$if windows {
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mode := 'rb'
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wpath := path.to_wide()
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return C._wpopen(wpath, mode.to_wide())
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} $else {
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cpath := path.str
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return C.popen(&char(cpath), c'r')
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}
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}
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fn vpclose(f voidptr) int {
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$if windows {
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return C._pclose(f)
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} $else {
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ret, _ := posix_wait4_to_exit_status(C.pclose(f))
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return ret
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}
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}
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fn posix_wait4_to_exit_status(waitret int) (int, bool) {
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$if windows {
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return waitret, false
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} $else {
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mut ret := 0
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mut is_signaled := true
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// (see man system, man 2 waitpid: C macro WEXITSTATUS section)
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if C.WIFEXITED(waitret) {
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ret = C.WEXITSTATUS(waitret)
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is_signaled = false
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} else if C.WIFSIGNALED(waitret) {
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ret = C.WTERMSIG(waitret)
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is_signaled = true
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}
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return ret, is_signaled
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}
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}
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@[manualfree]
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pub fn execute_large(cmd string) Result {
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// if cmd.contains(';') || cmd.contains('&&') || cmd.contains('||') || cmd.contains('\n') {
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// return Result{ exit_code: -1, output: ';, &&, || and \\n are not allowed in shell commands' }
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// }
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pcmd := if cmd.contains('2>') { cmd.clone() } else { '${cmd} 2>&1' }
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defer {
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unsafe { pcmd.free() }
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}
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f := vpopen(pcmd)
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if isnil(f) {
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return Result{
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exit_code: -1
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output: 'exec("${cmd}") failed'
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}
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}
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fd := fileno(f)
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mut res := strings.new_builder(4096)
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defer {
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unsafe { res.free() }
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}
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buf := [8192]u8{}
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unsafe {
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pbuf := &buf[0]
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for {
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len := C.read(fd, pbuf, 8192)
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if len == 0 {
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break
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}
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res.write_ptr(pbuf, len)
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}
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}
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soutput := res.str()
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exit_code := vpclose(f)
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return Result{
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exit_code: exit_code
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output: soutput
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}
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}
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pub fn execute_large_or_panic(cmd string) Result {
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res := execute_large(cmd)
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if res.exit_code != 0 {
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console.print_debug('failed cmd: ${cmd}')
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console.print_debug('failed code: ${res.exit_code}')
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panic(res.output)
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}
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return res
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}
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