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