module main import ( http os json ) const ( //url = 'http://localhost:8089' url = 'https://vpm.best' valid_vpm_commands = ['help', 'search', 'install', 'update', 'remove'] ) struct Mod { id int name string url string nr_downloads int } fn main() { ensure_vmodules_dir_exist() change_to_vmodules_dir() // This tool is intended to be launched by the v frontend, // so its first argument is the path to the v frontend executable. args := os.args // args are: vpm vexepath SUBCOMMAND module names if args.len < 3 { vpm_help([]) exit(5) } vpm_command := args[2] module_names := args[3..] //println('module names: ') println(module_names) match vpm_command { 'help' { vpm_help(module_names) } 'search' { vpm_search(module_names) } 'install' { vpm_install(module_names) } 'update' { vpm_update(module_names) } 'remove' { vpm_remove(module_names) } else { println('Error: you tried to run "v $vpm_command"') println('... but the v package management tool vpm only knows about these commands:') for validcmd in valid_vpm_commands { println(' v $validcmd') } exit(3) } } } fn vpm_search(module_names []string){ if user_asks_for_help(module_names) { println('Usage:') println(' v search keyword1 [keyword2] [...]') println(' ^^^^^^^^^^^^^^^^^ will search https://vpm.vlang.io/ for matching modules,') println(' and will show details about them') exit(0) } if module_names.len == 0 { println(' v search requires *at least one* keyword') exit(2) } todo('search') } fn vpm_install(module_names []string){ if user_asks_for_help(module_names) { println('Usage:') println(' v install module [module] [module] [...]') println(' ^^^^^^^^^^^^^ will install the modules you specified') exit(0) } if module_names.len == 0 { println(' v install requires *at least one* module name') exit(2) } mut errors := 0 for name in module_names { modurl := url + '/jsmod/$name' r := http.get(modurl) or { panic(err) } if r.status_code == 404 { println('Skipping module "$name", since $url reported that "$name" does not exist.') errors++ continue } if r.status_code != 200 { println('Skipping module "$name", since $url responded with $r.status_code http status code. Please try again later.') errors++ continue } s := r.text mod := json.decode(Mod, s) or { errors++ println('Skipping module "$name", since its information is not in json format.') continue } if( '' == mod.url || '' == mod.name ){ errors++ // a possible 404 error, which means a missing module? println('Skipping module "$name", since it is missing name or url information.') continue } final_module_path := get_vmodules_dir_path() + '/' + mod.name.replace('.', '/') println('Installing module "$name" from $mod.url to $final_module_path ...') _ = os.exec('git clone --depth=1 $mod.url $final_module_path') or { errors++ println('Could not install module "$name" to "$final_module_path" .') println('Error details: $err') continue } } if errors > 0 { exit(1) } } fn vpm_update(module_names []string){ if user_asks_for_help(module_names) { println('Usage: ') println(' a) v update module [module] [module] [...]') println(' ^^^^^^^^^^^^ will update the listed modules to their latest versions') println(' b) v update') println(' ^^^^^^^^^^^^ will update ALL installed modules to their latest versions') exit(0) } todo('update') } fn vpm_remove(module_names []string){ if user_asks_for_help(module_names) { println('Usage: ') println(' a) v remove module [module] [module] [...]') println(' ^^^^^^^^^^^^ will remove the listed modules') println(' b) v remove') println(' ^^^^^^^^^^^^ will remove ALL installed modules') exit(0) } todo('remove') } fn get_vmodules_dir_path() string { return os.home_dir() + '.vmodules' } fn ensure_vmodules_dir_exist() { home_vmodules := get_vmodules_dir_path() if !os.dir_exists( home_vmodules ) { println('Creating $home_vmodules/ ...') os.mkdir(home_vmodules) } } fn change_to_vmodules_dir() { os.chdir(get_vmodules_dir_path()) } fn todo(vpm_command string){ println('TODO: v $vpm_command') exit(4) } fn user_asks_for_help(module_names []string) bool { return ('-h' in module_names) || ('--help' in module_names) || ('help' in module_names) } fn vpm_help(module_names []string){ println('Usage:') println(' b) v search keyword1 [keyword2] [...]') println(' c) v install module [module] [module] [...]') println(' d) v update [module] [...]') println(' e) v remove [module] [...]') println('') println(' You can also pass -h or --help after each vpm command from the above, to see more details about it.') }