v/cmd/tools/vpm.v

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// Copyright (c) 2019-2022 Alexander Medvednikov. All rights reserved.
// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
module main
import os
import os.cmdline
import net.http
import net.urllib
import json
import vhelp
import v.vmod
const (
default_vpm_server_urls = ['https://vpm.vlang.io']
valid_vpm_commands = ['help', 'search', 'install', 'update', 'upgrade', 'outdated',
'list', 'remove', 'show']
excluded_dirs = ['cache', 'vlib']
supported_vcs_systems = ['git', 'hg']
supported_vcs_folders = ['.git', '.hg']
supported_vcs_update_cmds = {
'git': 'git pull'
'hg': 'hg pull --update'
}
supported_vcs_install_cmds = {
'git': 'git clone --depth=1'
'hg': 'hg clone'
}
supported_vcs_outdated_steps = {
'git': ['git fetch', 'git rev-parse @', 'git rev-parse @{u}']
'hg': ['hg incoming']
}
supported_vcs_version_cmds = {
'git': 'git version'
'hg': 'hg version'
}
)
struct Mod {
id int
name string
url string
nr_downloads int
vcs string
}
struct Vmod {
mut:
name string
version string
deps []string
}
enum Source {
git
hg
vpm
}
fn main() {
init_settings()
// This tool is intended to be launched by the v frontend,
// which provides the path to V inside os.getenv('VEXE')
// args are: vpm [options] SUBCOMMAND module names
params := cmdline.only_non_options(os.args[1..])
options := cmdline.only_options(os.args[1..])
verbose_println('cli params: $params')
if params.len < 1 {
vpm_help()
exit(5)
}
vpm_command := params[0]
mut module_names := params[1..]
ensure_vmodules_dir_exist()
// println('module names: ') println(module_names)
match vpm_command {
'help' {
vpm_help()
}
'search' {
vpm_search(module_names)
}
'install' {
if module_names.len == 0 && os.exists('./v.mod') {
println('Detected v.mod file inside the project directory. Using it...')
manifest := vmod.from_file('./v.mod') or { panic(err) }
module_names = manifest.dependencies
}
mut source := Source.vpm
if '--git' in options {
source = Source.git
}
if '--hg' in options {
source = Source.hg
}
vpm_install(module_names, source)
}
'update' {
vpm_update(module_names)
}
'upgrade' {
vpm_upgrade()
}
'outdated' {
vpm_outdated()
}
'list' {
vpm_list()
}
'remove' {
vpm_remove(module_names)
}
'show' {
vpm_show(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 $validcmd')
}
exit(3)
}
}
}
fn vpm_search(keywords []string) {
search_keys := keywords.map(it.replace('_', '-'))
if settings.is_help {
vhelp.show_topic('search')
exit(0)
}
if search_keys.len == 0 {
println('´v search´ requires *at least one* keyword.')
exit(2)
}
modules := get_all_modules()
installed_modules := get_installed_modules()
joined := search_keys.join(', ')
mut index := 0
for mod in modules {
for k in search_keys {
if !mod.contains(k) {
continue
}
if index == 0 {
println('Search results for "$joined":\n')
}
index++
mut parts := mod.split('.')
// in case the author isn't present
if parts.len == 1 {
parts << parts[0]
parts[0] = ' '
} else {
parts[0] = ' by ${parts[0]} '
}
installed := if mod in installed_modules { ' (installed)' } else { '' }
println('${index}. ${parts[1]}${parts[0]}[$mod]$installed')
break
}
}
if index == 0 {
vexe := os.getenv('VEXE')
vroot := os.real_path(os.dir(vexe))
mut messages := ['No module(s) found for `$joined` .']
for vlibmod in search_keys {
if os.is_dir(os.join_path(vroot, 'vlib', vlibmod)) {
messages << 'There is already an existing "$vlibmod" module in vlib, so you can just `import $vlibmod` .'
}
}
for m in messages {
println(m)
}
} else {
println('\nUse "v install author_name.module_name" to install the module.')
}
}
fn vpm_install_from_vpm(module_names []string) {
mut errors := 0
for n in module_names {
name := n.trim_space().replace('_', '-')
mod := get_module_meta_info(name) or {
errors++
println('Errors while retrieving meta data for module $name:')
println(err)
continue
}
mut vcs := mod.vcs
if vcs == '' {
vcs = supported_vcs_systems[0]
}
if vcs !in supported_vcs_systems {
errors++
println('Skipping module "$name", since it uses an unsupported VCS {$vcs} .')
continue
}
if !ensure_vcs_is_installed(vcs) {
errors++
println('VPM needs `$vcs` to be installed.')
continue
}
mod_name_as_path := mod.name.replace('.', os.path_separator).replace('-', '_').to_lower()
final_module_path := os.real_path(os.join_path(settings.vmodules_path, mod_name_as_path))
if os.exists(final_module_path) {
vpm_update([name])
continue
}
println('Installing module "$name" from "$mod.url" to "$final_module_path" ...')
vcs_install_cmd := supported_vcs_install_cmds[vcs]
cmd := '$vcs_install_cmd "$mod.url" "$final_module_path"'
verbose_println(' command: $cmd')
cmdres := os.execute(cmd)
if cmdres.exit_code != 0 {
errors++
println('Failed installing module "$name" to "$final_module_path" .')
print_failed_cmd(cmd, cmdres)
continue
}
resolve_dependencies(name, final_module_path, module_names)
}
if errors > 0 {
exit(1)
}
}
fn print_failed_cmd(cmd string, cmdres os.Result) {
verbose_println('Failed command: $cmd')
verbose_println('Failed command output:\n$cmdres.output')
}
fn ensure_vcs_is_installed(vcs string) bool {
mut res := true
cmd := supported_vcs_version_cmds[vcs]
cmdres := os.execute(cmd)
if cmdres.exit_code != 0 {
print_failed_cmd(cmd, cmdres)
res = false
}
return res
}
fn vpm_install_from_vcs(module_names []string, vcs_key string) {
mut errors := 0
for n in module_names {
url := n.trim_space()
first_cut_pos := url.last_index('/') or {
errors++
println('Errors while retrieving name for module "$url" :')
println(err)
continue
}
mod_name := url.substr(first_cut_pos + 1, url.len)
second_cut_pos := url.substr(0, first_cut_pos).last_index('/') or {
errors++
println('Errors while retrieving name for module "$url" :')
println(err)
continue
}
repo_name := url.substr(second_cut_pos + 1, first_cut_pos)
mut name := repo_name + os.path_separator + mod_name
mod_name_as_path := name.replace('-', '_').to_lower()
mut final_module_path := os.real_path(os.join_path(settings.vmodules_path, mod_name_as_path))
if os.exists(final_module_path) {
vpm_update([name.replace('-', '_')])
continue
}
if !ensure_vcs_is_installed(vcs_key) {
errors++
println('VPM needs `$vcs_key` to be installed.')
continue
}
println('Installing module "$name" from "$url" to "$final_module_path" ...')
vcs_install_cmd := supported_vcs_install_cmds[vcs_key]
cmd := '$vcs_install_cmd "$url" "$final_module_path"'
verbose_println(' command: $cmd')
cmdres := os.execute(cmd)
if cmdres.exit_code != 0 {
errors++
println('Failed installing module "$name" to "$final_module_path" .')
print_failed_cmd(cmd, cmdres)
continue
}
vmod_path := os.join_path(final_module_path, 'v.mod')
if os.exists(vmod_path) {
data := os.read_file(vmod_path) or { return }
vmod := parse_vmod(data)
mod_path := os.real_path(os.join_path(settings.vmodules_path, vmod.name.replace('.',
os.path_separator)))
println('Relocating module from "$name" to "$vmod.name" ( "$mod_path" ) ...')
if os.exists(mod_path) {
println('Warning module "$mod_path" already exsits!')
println('Removing module "$mod_path" ...')
os.rmdir_all(mod_path) or {
errors++
println('Errors while removing "$mod_path" :')
println(err)
continue
}
}
os.mv(final_module_path, mod_path) or {
errors++
println('Errors while relocating module "$name" :')
println(err)
os.rmdir_all(final_module_path) or {
errors++
println('Errors while removing "$final_module_path" :')
println(err)
continue
}
continue
}
println('Module "$name" relocated to "$vmod.name" successfully.')
final_module_path = mod_path
name = vmod.name
}
resolve_dependencies(name, final_module_path, module_names)
}
if errors > 0 {
exit(1)
}
}
fn vpm_install(module_names []string, source Source) {
if settings.is_help {
vhelp.show_topic('install')
exit(0)
}
if module_names.len == 0 {
println('´v install´ requires *at least one* module name.')
exit(2)
}
if source == .vpm {
vpm_install_from_vpm(module_names)
}
if source == .git {
vpm_install_from_vcs(module_names, 'git')
}
if source == .hg {
vpm_install_from_vcs(module_names, 'hg')
}
}
fn vpm_update(m []string) {
mut module_names := m.clone()
if settings.is_help {
vhelp.show_topic('update')
exit(0)
}
if module_names.len == 0 {
module_names = get_installed_modules()
}
mut errors := 0
for modulename in module_names {
mut zname := modulename
if mod := get_mod_by_url(modulename) {
zname = mod.name
}
final_module_path := valid_final_path_of_existing_module(modulename) or { continue }
os.chdir(final_module_path) or {}
println('Updating module "$zname" in "$final_module_path" ...')
vcs := vcs_used_in_dir(final_module_path) or { continue }
if !ensure_vcs_is_installed(vcs[0]) {
errors++
println('VPM needs `$vcs` to be installed.')
continue
}
vcs_cmd := supported_vcs_update_cmds[vcs[0]]
verbose_println(' command: $vcs_cmd')
vcs_res := os.execute('$vcs_cmd')
if vcs_res.exit_code != 0 {
errors++
println('Failed updating module "$zname" in "$final_module_path" .')
print_failed_cmd(vcs_cmd, vcs_res)
continue
} else {
verbose_println(' $vcs_res.output.trim_space()')
}
resolve_dependencies(modulename, final_module_path, module_names)
}
if errors > 0 {
exit(1)
}
}
fn get_outdated() ?[]string {
module_names := get_installed_modules()
mut outdated := []string{}
for name in module_names {
final_module_path := valid_final_path_of_existing_module(name) or { continue }
os.chdir(final_module_path) or {}
vcs := vcs_used_in_dir(final_module_path) or { continue }
vcs_cmd_steps := supported_vcs_outdated_steps[vcs[0]]
mut outputs := []string{}
for step in vcs_cmd_steps {
res := os.execute(step)
if res.exit_code < 0 {
verbose_println('Error command: $step')
verbose_println('Error details:\n$res.output')
return error('Error while checking latest commits for "$name" .')
}
if vcs[0] == 'hg' {
if res.exit_code == 1 {
outdated << name
}
} else {
outputs << res.output
}
}
if vcs[0] == 'git' && outputs[1] != outputs[2] {
outdated << name
}
}
return outdated
}
fn vpm_upgrade() {
outdated := get_outdated() or { exit(1) }
if outdated.len > 0 {
vpm_update(outdated)
} else {
println('Modules are up to date.')
}
}
fn vpm_outdated() {
outdated := get_outdated() or { exit(1) }
if outdated.len > 0 {
println('Outdated modules:')
for m in outdated {
println(' $m')
}
} else {
println('Modules are up to date.')
}
}
fn vpm_list() {
module_names := get_installed_modules()
if module_names.len == 0 {
println('You have no modules installed.')
exit(0)
}
println('Installed modules:')
for mod in module_names {
println(' $mod')
}
}
fn vpm_remove(module_names []string) {
if settings.is_help {
vhelp.show_topic('remove')
exit(0)
}
if module_names.len == 0 {
println('´v remove´ requires *at least one* module name.')
exit(2)
}
for name in module_names {
final_module_path := valid_final_path_of_existing_module(name) or { continue }
println('Removing module "$name" ...')
verbose_println('removing folder $final_module_path')
os.rmdir_all(final_module_path) or {
verbose_println('error while removing "$final_module_path": $err.msg')
}
// delete author directory if it is empty
author := name.split('.')[0]
author_dir := os.real_path(os.join_path(settings.vmodules_path, author))
if !os.exists(author_dir) {
continue
}
if os.is_dir_empty(author_dir) {
verbose_println('removing author folder $author_dir')
os.rmdir(author_dir) or {
verbose_println('error while removing "$author_dir": $err.msg')
}
}
}
}
fn valid_final_path_of_existing_module(modulename string) ?string {
mut name := modulename
if mod := get_mod_by_url(name) {
name = mod.name
}
mod_name_as_path := name.replace('.', os.path_separator).replace('-', '_').to_lower()
name_of_vmodules_folder := os.join_path(settings.vmodules_path, mod_name_as_path)
final_module_path := os.real_path(name_of_vmodules_folder)
if !os.exists(final_module_path) {
println('No module with name "$name" exists at $name_of_vmodules_folder')
return none
}
if !os.is_dir(final_module_path) {
println('Skipping "$name_of_vmodules_folder", since it is not a folder.')
return none
}
vcs_used_in_dir(final_module_path) or {
println('Skipping "$name_of_vmodules_folder", since it does not use a supported vcs.')
return none
}
return final_module_path
}
fn ensure_vmodules_dir_exist() {
if !os.is_dir(settings.vmodules_path) {
println('Creating "$settings.vmodules_path/" ...')
os.mkdir(settings.vmodules_path) or { panic(err) }
}
}
fn vpm_help() {
vhelp.show_topic('vpm')
}
fn vcs_used_in_dir(dir string) ?[]string {
mut vcs := []string{}
for repo_subfolder in supported_vcs_folders {
checked_folder := os.real_path(os.join_path(dir, repo_subfolder))
if os.is_dir(checked_folder) {
vcs << repo_subfolder.replace('.', '')
}
}
if vcs.len == 0 {
return none
}
return vcs
}
fn get_installed_modules() []string {
dirs := os.ls(settings.vmodules_path) or { return [] }
mut modules := []string{}
for dir in dirs {
adir := os.join_path(settings.vmodules_path, dir)
if dir in excluded_dirs || !os.is_dir(adir) {
continue
}
if os.exists(os.join_path(adir, 'v.mod')) && os.exists(os.join_path(adir, '.git', 'config')) {
// an official vlang module with a short module name, like `vsl`, `ui` or `markdown`
modules << dir
continue
}
author := dir
mods := os.ls(adir) or { continue }
for m in mods {
vcs_used_in_dir(os.join_path(adir, m)) or { continue }
modules << '${author}.$m'
}
}
return modules
}
fn get_all_modules() []string {
url := get_working_server_url()
r := http.get(url) or { panic(err) }
if r.status_code != 200 {
println('Failed to search vpm.vlang.io. Status code: $r.status_code')
exit(1)
}
s := r.text
mut read_len := 0
mut modules := []string{}
for read_len < s.len {
mut start_token := '<a href="/mod'
end_token := '</a>'
// get the start index of the module entry
mut start_index := s.index_after(start_token, read_len)
if start_index == -1 {
break
}
// get the index of the end of anchor (a) opening tag
// we use the previous start_index to make sure we are getting a module and not just a random 'a' tag
start_token = '">'
start_index = s.index_after(start_token, start_index) + start_token.len
// get the index of the end of module entry
end_index := s.index_after(end_token, start_index)
if end_index == -1 {
break
}
modules << s[start_index..end_index]
read_len = end_index
if read_len >= s.len {
break
}
}
return modules
}
fn resolve_dependencies(name string, module_path string, module_names []string) {
vmod_path := os.join_path(module_path, 'v.mod')
if !os.exists(vmod_path) {
return
}
data := os.read_file(vmod_path) or { return }
vmod := parse_vmod(data)
mut deps := []string{}
// filter out dependencies that were already specified by the user
for d in vmod.deps {
if d !in module_names {
deps << d
}
}
if deps.len > 0 {
println('Resolving $deps.len dependencies for module "$name" ...')
verbose_println('Found dependencies: $deps')
vpm_install(deps, Source.vpm)
}
}
fn parse_vmod(data string) Vmod {
manifest := vmod.decode(data) or { vmod.Manifest{} }
mut vmod := Vmod{}
vmod.name = manifest.name
vmod.version = manifest.version
vmod.deps = manifest.dependencies
return vmod
}
fn get_working_server_url() string {
server_urls := if settings.server_urls.len > 0 {
settings.server_urls
} else {
default_vpm_server_urls
}
for url in server_urls {
verbose_println('Trying server url: $url')
http.head(url) or {
verbose_println(' $url failed.')
continue
}
return url
}
panic('No responding vpm server found. Please check your network connectivity and try again later.')
}
// settings context:
struct VpmSettings {
mut:
is_help bool
is_verbose bool
server_urls []string
vmodules_path string
}
const (
settings = &VpmSettings{}
)
fn init_settings() {
mut s := &VpmSettings(0)
unsafe {
s = settings
}
s.is_help = '-h' in os.args || '--help' in os.args || 'help' in os.args
s.is_verbose = '-v' in os.args
s.server_urls = cmdline.options(os.args, '-server-url')
s.vmodules_path = os.vmodules_dir()
}
fn verbose_println(s string) {
if settings.is_verbose {
println(s)
}
}
fn get_mod_by_url(name string) ?Mod {
if purl := urllib.parse(name) {
verbose_println('purl: $purl')
mod := Mod{
name: purl.path.trim_left('/').trim_right('/').replace('/', '.')
url: name
}
verbose_println(mod.str())
return mod
}
return error('invalid url: $name')
}
fn get_module_meta_info(name string) ?Mod {
if mod := get_mod_by_url(name) {
return mod
}
mut errors := []string{}
for server_url in default_vpm_server_urls {
modurl := server_url + '/jsmod/$name'
verbose_println('Retrieving module metadata from: "$modurl" ...')
r := http.get(modurl) or {
errors << 'Http server did not respond to our request for "$modurl" .'
errors << 'Error details: $err'
continue
}
if r.status_code == 404 || r.text.trim_space() == '404' {
errors << 'Skipping module "$name", since "$server_url" reported that "$name" does not exist.'
continue
}
if r.status_code != 200 {
errors << 'Skipping module "$name", since "$server_url" responded with $r.status_code http status code. Please try again later.'
continue
}
s := r.text
if s.len > 0 && s[0] != `{` {
errors << 'Invalid json data'
errors << s.trim_space().limit(100) + ' ...'
continue
}
mod := json.decode(Mod, s) or {
errors << 'Skipping module "$name", since its information is not in json format.'
continue
}
if '' == mod.url || '' == mod.name {
errors << 'Skipping module "$name", since it is missing name or url information.'
continue
}
return mod
}
return error(errors.join_lines())
}
fn vpm_show(module_names []string) {
installed_modules := get_installed_modules()
for module_name in module_names {
if module_name !in installed_modules {
module_meta_info := get_module_meta_info(module_name) or { continue }
print('
Name: $module_meta_info.name
Homepage: $module_meta_info.url
Downloads: $module_meta_info.nr_downloads
Installed: False
--------
')
continue
}
path := os.join_path(os.vmodules_dir(), module_name.replace('.', os.path_separator))
mod := vmod.from_file(os.join_path(path, 'v.mod')) or { continue }
print('Name: $mod.name
Version: $mod.version
Description: $mod.description
Homepage: $mod.repo_url
Author: $mod.author
License: $mod.license
Location: $path
Requires: ${mod.dependencies.join(', ')}
--------
')
}
}