module scripting import os import term const ( term_colors = term.can_show_color_on_stdout() ) pub fn set_verbose(on bool) { // setting a global here would be the obvious solution, // but V does not have globals normally. if on { os.setenv('VERBOSE', '1', true) } else { os.unsetenv('VERBOSE') } } pub fn cprintln(message string) { mut omessage := message omessage = if term_colors { term.green(omessage) } else { omessage } println(omessage) } pub fn verbose_trace(label string, message string) { if os.getenv('VERBOSE').len > 0 { slabel := 'scripting.${label}' cprintln('# ${slabel:-25s} : $message') } } pub fn verbose_trace_exec_result(x os.Result) { if os.getenv('VERBOSE').len > 0 { cprintln('# cmd.exit_code : ${x.exit_code.str():-4s} cmd.output:') cprintln('# ----------------------------------- #') mut lnum := 1 lines := x.output.split_into_lines() for line in lines { cprintln('# ${lnum:3d}: $line') lnum++ } cprintln('# ----------------------------------- #') } } pub fn chdir(path string) { verbose_trace(@FN, 'cd $path') os.chdir(path) } pub fn rmrf(path string) { verbose_trace(@FN, 'rm -rf $path') if os.exists(path) { if os.is_dir(path) { os.rmdir_all(path) }else{ os.rm(path) } } } pub fn exec(cmd string) ?os.Result { verbose_trace(@FN, cmd) x := os.exec(cmd) or { verbose_trace(@FN, '## failed.') return error(err) } verbose_trace_exec_result(x) return x } pub fn run(cmd string) string { verbose_trace(@FN, cmd) x := os.exec(cmd) or { verbose_trace(@FN, '## failed.') return '' } verbose_trace_exec_result(x) if x.exit_code == 0 { return x.output.trim_right('\r\n') } return '' } pub fn exit_0_status(cmd string) bool { verbose_trace(@FN, cmd) x := os.exec(cmd) or { verbose_trace(@FN, '## failed.') return false } verbose_trace_exec_result(x) if x.exit_code == 0 { return true } return false } pub fn tool_must_exist (toolcmd string) { verbose_trace(@FN, toolcmd) if exit_0_status('type $toolcmd') { return } eprintln('Missing tool: $toolcmd') eprintln('Please try again after you install it.') exit(1) } pub fn used_tools_must_exist(tools []string) { for t in tools { tool_must_exist(t) } } pub fn show_sizes_of_files(files []string) { for f in files { size := os.file_size(f) println('${size:10d} $f') } }