mirror of
https://github.com/Jguer/yay
synced 2024-10-31 04:12:51 +00:00
c0402e61a6
Reformatted comments to have a space between // and the start of the comment. Added capital letters and punctuation. Fixed most grammar and spelling mistakes. Fixed date to yyyy/mm/dd.
538 lines
9 KiB
Go
538 lines
9 KiB
Go
package main
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import (
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"fmt"
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"io"
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"os"
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"strings"
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)
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// A basic set implementation for strings.
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// This is used a lot so it deserves its own type.
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// Other types of sets are used throughout the code but do not have
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// their own typedef.
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// String sets and <type>sets should be used throughout the code when applicable,
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// they are a lot more flexable than slices and provide easy lookup.
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type stringSet map[string]struct{}
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func (set stringSet) set(v string) {
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set[v] = struct{}{}
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}
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func (set stringSet) get(v string) bool {
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_, exists := set[v]
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return exists
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}
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func (set stringSet) remove(v string) {
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delete(set, v)
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}
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func (set stringSet) toSlice() []string {
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slice := make([]string, 0, len(set))
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for v := range set {
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slice = append(slice, v)
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}
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return slice
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}
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// Parses command line arguments in a way we can interact with programmatically but
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// also in a way that can easily be passed to pacman later on.
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type arguments struct {
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op string
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options map[string]string
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globals map[string]string
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doubles stringSet // Tracks args passed twice such as -yy and -dd
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targets stringSet
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}
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func makeArguments() *arguments {
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return &arguments{
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"",
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make(map[string]string),
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make(map[string]string),
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make(stringSet),
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make(stringSet),
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}
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}
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func (parser *arguments) copy() (cp *arguments) {
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cp = makeArguments()
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cp.op = parser.op
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for k, v := range parser.options {
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cp.options[k] = v
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}
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for k, v := range parser.globals {
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cp.globals[k] = v
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}
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for k, v := range parser.targets {
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cp.targets[k] = v
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}
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for k, v := range parser.doubles {
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cp.doubles[k] = v
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}
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return
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}
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func (parser *arguments) delArg(options ...string) {
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for _, option := range options {
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delete(parser.options, option)
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delete(parser.globals, option)
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delete(parser.doubles, option)
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}
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}
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func (parser *arguments) needRoot() bool {
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if parser.existsArg("h", "help") {
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return false
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}
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if parser.existsArg("p", "print") {
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return false
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}
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switch parser.op {
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case "V", "version":
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return false
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case "D", "database":
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return true
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case "F", "files":
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if parser.existsArg("y", "refresh") {
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return true
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}
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return false
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case "Q", "query":
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return false
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case "R", "remove":
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return true
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case "S", "sync":
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if parser.existsArg("y", "refresh") {
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return true
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}
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if parser.existsArg("u", "sysupgrade") {
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return true
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}
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if parser.existsArg("s", "search") {
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return false
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}
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if parser.existsArg("l", "list") {
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return false
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}
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if parser.existsArg("i", "info") {
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return false
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}
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return true
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case "T", "deptest":
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return false
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case "U", "upgrade":
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return true
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// yay specific
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case "Y", "yay":
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return false
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case "P", "print":
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return false
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case "G", "getpkgbuild":
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return false
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default:
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return false
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}
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}
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func (parser *arguments) addOP(op string) (err error) {
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if parser.op != "" {
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err = fmt.Errorf("only one operation may be used at a time")
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return
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}
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parser.op = op
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return
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}
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func (parser *arguments) addParam(option string, arg string) (err error) {
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if isOp(option) {
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err = parser.addOP(option)
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return
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}
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if parser.existsArg(option) {
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parser.doubles[option] = struct{}{}
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} else if isGlobal(option) {
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parser.globals[option] = arg
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} else {
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parser.options[option] = arg
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}
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return
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}
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func (parser *arguments) addArg(options ...string) (err error) {
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for _, option := range options {
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err = parser.addParam(option, "")
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if err != nil {
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return
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}
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}
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return
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}
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// Multiple args acts as an OR operator
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func (parser *arguments) existsArg(options ...string) bool {
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for _, option := range options {
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_, exists := parser.options[option]
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if exists {
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return true
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}
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_, exists = parser.globals[option]
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if exists {
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return true
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}
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}
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return false
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}
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func (parser *arguments) getArg(options ...string) (arg string, double bool, exists bool) {
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for _, option := range options {
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arg, exists = parser.options[option]
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if exists {
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_, double = parser.doubles[option]
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return
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}
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arg, exists = parser.globals[option]
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if exists {
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_, double = parser.doubles[option]
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return
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}
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}
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return
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}
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func (parser *arguments) addTarget(targets ...string) {
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for _, target := range targets {
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parser.targets[target] = struct{}{}
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}
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}
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func (parser *arguments) delTarget(targets ...string) {
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for _, target := range targets {
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delete(parser.targets, target)
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}
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}
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// Multiple args acts as an OR operator
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func (parser *arguments) existsDouble(options ...string) bool {
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for _, option := range options {
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_, exists := parser.doubles[option]
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if exists {
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return true
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}
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}
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return false
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}
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func (parser *arguments) formatTargets() (args []string) {
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for target := range parser.targets {
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args = append(args, target)
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}
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return
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}
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func (parser *arguments) formatArgs() (args []string) {
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var op string
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if parser.op != "" {
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op = formatArg(parser.op)
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}
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args = append(args, op)
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for option, arg := range parser.options {
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if option == "--" {
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continue
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}
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formatedOption := formatArg(option)
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args = append(args, formatedOption)
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if hasParam(option) {
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args = append(args, arg)
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}
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if parser.existsDouble(option) {
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args = append(args, formatedOption)
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}
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}
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return
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}
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func (parser *arguments) formatGlobals() (args []string) {
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for option, arg := range parser.globals {
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formatedOption := formatArg(option)
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args = append(args, formatedOption)
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if hasParam(option) {
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args = append(args, arg)
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}
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if parser.existsDouble(option) {
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args = append(args, formatedOption)
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}
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}
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return
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}
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func formatArg(arg string) string {
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if len(arg) > 1 {
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arg = "--" + arg
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} else {
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arg = "-" + arg
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}
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return arg
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}
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func isOp(op string) bool {
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switch op {
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case "V", "version":
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return true
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case "D", "database":
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return true
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case "F", "files":
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return true
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case "Q", "query":
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return true
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case "R", "remove":
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return true
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case "S", "sync":
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return true
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case "T", "deptest":
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return true
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case "U", "upgrade":
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return true
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// yay specific
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case "Y", "yay":
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return true
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case "P", "print":
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return true
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case "G", "getpkgbuild":
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return true
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default:
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return false
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}
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}
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func isGlobal(op string) bool {
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switch op {
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case "b", "dbpath":
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return true
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case "r", "root":
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return true
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case "v", "verbose":
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return true
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case "arch":
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return true
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case "cachedir":
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return true
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case "color":
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return true
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case "config":
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return true
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case "debug":
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return true
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case "gpgdir":
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return true
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case "hookdir":
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return true
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case "logfile":
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return true
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case "noconfirm":
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return true
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case "confirm":
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return true
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default:
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return false
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}
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}
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func hasParam(arg string) bool {
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switch arg {
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case "dbpath", "b":
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return true
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case "root", "r":
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return true
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case "sysroot":
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return true
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case "config":
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return true
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case "ignore":
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return true
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case "assume-installed":
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return true
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case "overwrite":
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return true
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case "ask":
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return true
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case "cachedir":
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return true
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case "hookdir":
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return true
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case "logfile":
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return true
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case "ignoregroup":
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return true
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case "arch":
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return true
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case "print-format":
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return true
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case "gpgdir":
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return true
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case "color":
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return true
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default:
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return false
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}
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}
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// Parses short hand options such as:
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// -Syu -b/some/path -
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func (parser *arguments) parseShortOption(arg string, param string) (usedNext bool, err error) {
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if arg == "-" {
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err = parser.addArg("-")
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return
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}
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arg = arg[1:]
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for k, _char := range arg {
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char := string(_char)
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if hasParam(char) {
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if k < len(arg)-2 {
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err = parser.addParam(char, arg[k+2:])
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} else {
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usedNext = true
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err = parser.addParam(char, param)
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}
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break
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} else {
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err = parser.addArg(char)
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if err != nil {
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return
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}
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}
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}
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return
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}
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// Parses full length options such as:
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// --sync --refresh --sysupgrade --dbpath /some/path --
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func (parser *arguments) parseLongOption(arg string, param string) (usedNext bool, err error) {
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if arg == "--" {
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err = parser.addArg(arg)
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return
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}
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arg = arg[2:]
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if hasParam(arg) {
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err = parser.addParam(arg, param)
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usedNext = true
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} else {
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err = parser.addArg(arg)
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}
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return
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}
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func (parser *arguments) parseStdin() (err error) {
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for {
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var target string
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_, err = fmt.Scan(&target)
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if err != nil {
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if err == io.EOF {
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err = nil
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}
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return
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}
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parser.addTarget(target)
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}
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return
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}
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func (parser *arguments) parseCommandLine() (err error) {
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args := os.Args[1:]
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usedNext := false
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if len(args) < 1 {
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err = fmt.Errorf("no operation specified (use -h for help)")
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return
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}
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for k, arg := range args {
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var nextArg string
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if usedNext {
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usedNext = false
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continue
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}
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if k+1 < len(args) {
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nextArg = args[k+1]
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}
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if parser.existsArg("--") {
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parser.addTarget(arg)
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} else if strings.HasPrefix(arg, "--") {
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usedNext, err = parser.parseLongOption(arg, nextArg)
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} else if strings.HasPrefix(arg, "-") {
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usedNext, err = parser.parseShortOption(arg, nextArg)
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} else {
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parser.addTarget(arg)
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}
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if err != nil {
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return
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}
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}
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if parser.op == "" {
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parser.op = "Y"
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}
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if cmdArgs.existsArg("-") {
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err = cmdArgs.parseStdin()
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if err != nil {
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return
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}
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}
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return
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}
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