yay/parser.go
morganamilo febccaef3a
Reorder main
Split functions out into smaller, more simple chunks. Ensure the correct
order of things.

Before, initConfig() would also create config.BuildDirbefore
the command line flags have been applied, so yay would
try to mkdir what was in the config, ignoring the flag.
2018-08-12 05:09:53 +01:00

1000 lines
18 KiB
Go

package main
import (
"bufio"
"bytes"
"fmt"
"html"
"os"
"strconv"
"strings"
"unicode"
)
// A basic set implementation for strings.
// This is used a lot so it deserves its own type.
// Other types of sets are used throughout the code but do not have
// their own typedef.
// String sets and <type>sets should be used throughout the code when applicable,
// they are a lot more flexible than slices and provide easy lookup.
type stringSet map[string]struct{}
func (set stringSet) set(v string) {
set[v] = struct{}{}
}
func (set stringSet) get(v string) bool {
_, exists := set[v]
return exists
}
func (set stringSet) remove(v string) {
delete(set, v)
}
func (set stringSet) toSlice() []string {
slice := make([]string, 0, len(set))
for v := range set {
slice = append(slice, v)
}
return slice
}
func (set stringSet) copy() stringSet {
newSet := make(stringSet)
for str := range set {
newSet.set(str)
}
return newSet
}
func sliceToStringSet(in []string) stringSet {
set := make(stringSet)
for _, v := range in {
set.set(v)
}
return set
}
func makeStringSet(in ...string) stringSet {
return sliceToStringSet(in)
}
// Parses command line arguments in a way we can interact with programmatically but
// also in a way that can easily be passed to pacman later on.
type arguments struct {
op string
options map[string]string
globals map[string]string
doubles stringSet // Tracks args passed twice such as -yy and -dd
targets []string
}
func makeArguments() *arguments {
return &arguments{
"",
make(map[string]string),
make(map[string]string),
make(stringSet),
make([]string, 0),
}
}
func (parser *arguments) copy() (cp *arguments) {
cp = makeArguments()
cp.op = parser.op
for k, v := range parser.options {
cp.options[k] = v
}
for k, v := range parser.globals {
cp.globals[k] = v
}
cp.targets = make([]string, len(parser.targets))
copy(cp.targets, parser.targets)
for k, v := range parser.doubles {
cp.doubles[k] = v
}
return
}
func (parser *arguments) delArg(options ...string) {
for _, option := range options {
delete(parser.options, option)
delete(parser.globals, option)
delete(parser.doubles, option)
}
}
func (parser *arguments) needRoot() bool {
if parser.existsArg("h", "help") {
return false
}
switch parser.op {
case "D", "database":
if parser.existsArg("k", "check") {
return false
}
return true
case "F", "files":
if parser.existsArg("y", "refresh") {
return true
}
return false
case "Q", "query":
if parser.existsArg("k", "check") {
return true
}
return false
case "R", "remove":
return true
case "S", "sync":
if parser.existsArg("y", "refresh") {
return true
}
if parser.existsArg("p", "print", "print-format") {
return false
}
if parser.existsArg("s", "search") {
return false
}
if parser.existsArg("l", "list") {
return false
}
if parser.existsArg("g", "groups") {
return false
}
if parser.existsArg("i", "info") {
return false
}
if parser.existsArg("c", "clean") && mode == ModeAUR {
return false
}
return true
case "U", "upgrade":
return true
default:
return false
}
}
func (parser *arguments) addOP(op string) (err error) {
if parser.op != "" {
err = fmt.Errorf("only one operation may be used at a time")
return
}
parser.op = op
return
}
func (parser *arguments) addParam(option string, arg string) (err error) {
if !isArg(option) {
return fmt.Errorf("invalid option '%s'", option)
}
if isOp(option) {
err = parser.addOP(option)
return
}
if parser.existsArg(option) {
parser.doubles[option] = struct{}{}
} else if isGlobal(option) {
parser.globals[option] = arg
} else {
parser.options[option] = arg
}
return
}
func (parser *arguments) addArg(options ...string) (err error) {
for _, option := range options {
err = parser.addParam(option, "")
if err != nil {
return
}
}
return
}
// Multiple args acts as an OR operator
func (parser *arguments) existsArg(options ...string) bool {
for _, option := range options {
_, exists := parser.options[option]
if exists {
return true
}
_, exists = parser.globals[option]
if exists {
return true
}
}
return false
}
func (parser *arguments) getArg(options ...string) (arg string, double bool, exists bool) {
existCount := 0
for _, option := range options {
var value string
value, exists = parser.options[option]
if exists {
arg = value
existCount++
_, exists = parser.doubles[option]
if exists {
existCount++
}
}
value, exists = parser.globals[option]
if exists {
arg = value
existCount++
_, exists = parser.doubles[option]
if exists {
existCount++
}
}
}
double = existCount >= 2
exists = existCount >= 1
return
}
func (parser *arguments) addTarget(targets ...string) {
parser.targets = append(parser.targets, targets...)
}
func (parser *arguments) clearTargets() {
parser.targets = make([]string, 0)
}
// Multiple args acts as an OR operator
func (parser *arguments) existsDouble(options ...string) bool {
for _, option := range options {
_, exists := parser.doubles[option]
if exists {
return true
}
}
return false
}
func (parser *arguments) formatArgs() (args []string) {
var op string
if parser.op != "" {
op = formatArg(parser.op)
}
args = append(args, op)
for option, arg := range parser.options {
if option == "--" {
continue
}
formattedOption := formatArg(option)
args = append(args, formattedOption)
if hasParam(option) {
args = append(args, arg)
}
if parser.existsDouble(option) {
args = append(args, formattedOption)
}
}
return
}
func (parser *arguments) formatGlobals() (args []string) {
for option, arg := range parser.globals {
formattedOption := formatArg(option)
args = append(args, formattedOption)
if hasParam(option) {
args = append(args, arg)
}
if parser.existsDouble(option) {
args = append(args, formattedOption)
}
}
return
}
func formatArg(arg string) string {
if len(arg) > 1 {
arg = "--" + arg
} else {
arg = "-" + arg
}
return arg
}
func isArg(arg string) bool {
switch arg {
case "-", "--":
case "D", "database":
case "Q", "query":
case "R", "remove":
case "S", "sync":
case "T", "deptest":
case "U", "upgrade":
case "F", "files":
case "V", "version":
case "h", "help":
case "Y", "yay":
case "P", "show":
case "G", "getpkgbuild":
case "b", "dbpath":
case "r", "root":
case "v", "verbose":
case "arch":
case "cachedir":
case "color":
case "config":
case "debug":
case "gpgdir":
case "hookdir":
case "logfile":
case "noconfirm":
case "confirm":
case "disabledownloadtimeout":
case "sysroot":
case "d", "nodeps":
case "assumeinstalled":
case "dbonly":
case "noprogressbar":
case "noscriptlet":
case "p":
case "printformat":
case "asdeps":
case "asexplicit":
case "ignore":
case "ignoregroup":
case "needed":
case "overwrite":
case "force":
case "c", "changelog":
case "deps":
case "e", "explicit":
case "g", "groups":
case "i", "info":
case "k", "check":
case "l", "list":
case "m", "foreign":
case "n", "native":
case "o", "owns":
case "file":
case "q", "quiet":
case "s", "search":
case "t", "unrequired":
case "u", "upgrades":
case "cascade":
case "nosave":
case "recursive":
case "unneeded":
case "clean":
case "sysupgrade":
case "w", "downloadonly":
case "y", "refresh":
case "x", "regex":
case "machinereadable":
//yay options
case "save":
case "afterclean":
case "noafterclean":
case "devel":
case "nodevel":
case "timeupdate":
case "notimeupdate":
case "topdown":
case "bottomup":
case "completioninterval":
case "sortby":
case "redownload":
case "redownloadall":
case "noredownload":
case "rebuild":
case "rebuildall":
case "rebuildtree":
case "norebuild":
case "answerclean":
case "noanswerclean":
case "answerdiff":
case "noanswerdiff":
case "answeredit":
case "noansweredit":
case "answerupgrade":
case "noanswerupgrade":
case "gitclone":
case "nogitclone":
case "gpgflags":
case "mflags":
case "gitflags":
case "builddir":
case "editor":
case "editorflags":
case "makepkg":
case "makepkgconf":
case "nomakepkgconf":
case "pacman":
case "tar":
case "git":
case "gpg":
case "requestsplitn":
case "sudoloop":
case "nosudoloop":
case "provides":
case "noprovides":
case "pgpfetch":
case "nopgpfetch":
case "upgrademenu":
case "noupgrademenu":
case "cleanmenu":
case "nocleanmenu":
case "diffmenu":
case "nodiffmenu":
case "editmenu":
case "noeditmenu":
case "useask":
case "nouseask":
case "combinedupgrade":
case "nocombinedupgrade":
case "a", "aur":
case "repo":
case "removemake":
case "noremovemake":
case "askremovemake":
case "complete":
case "stats":
case "news":
case "gendb":
case "currentconfig":
default:
return false
}
return true
}
func handleConfig(option, value string) bool {
switch option {
case "save":
shouldSaveConfig = true
case "afterclean":
config.CleanAfter = true
case "noafterclean":
config.CleanAfter = false
case "devel":
config.Devel = true
case "nodevel":
config.Devel = false
case "timeupdate":
config.TimeUpdate = true
case "notimeupdate":
config.TimeUpdate = false
case "topdown":
config.SortMode = TopDown
case "bottomup":
config.SortMode = BottomUp
case "completioninterval":
n, err := strconv.Atoi(value)
if err == nil {
config.CompletionInterval = n
}
case "sortby":
config.SortBy = value
case "noconfirm":
config.NoConfirm = true
case "config":
config.PacmanConf = value
case "redownload":
config.ReDownload = "yes"
case "redownloadall":
config.ReDownload = "all"
case "noredownload":
config.ReDownload = "no"
case "rebuild":
config.ReBuild = "yes"
case "rebuildall":
config.ReBuild = "all"
case "rebuildtree":
config.ReBuild = "tree"
case "norebuild":
config.ReBuild = "no"
case "answerclean":
config.AnswerClean = value
case "noanswerclean":
config.AnswerClean = ""
case "answerdiff":
config.AnswerDiff = value
case "noanswerdiff":
config.AnswerDiff = ""
case "answeredit":
config.AnswerEdit = value
case "noansweredit":
config.AnswerEdit = ""
case "answerupgrade":
config.AnswerUpgrade = value
case "noanswerupgrade":
config.AnswerUpgrade = ""
case "gitclone":
config.GitClone = true
case "nogitclone":
config.GitClone = false
case "gpgflags":
config.GpgFlags = value
case "mflags":
config.MFlags = value
case "gitflags":
config.GitFlags = value
case "builddir":
config.BuildDir = value
case "editor":
config.Editor = value
case "editorflags":
config.EditorFlags = value
case "makepkg":
config.MakepkgBin = value
case "makepkgconf":
config.MakepkgConf = value
case "nomakepkgconf":
config.MakepkgConf = ""
case "pacman":
config.PacmanBin = value
case "tar":
config.TarBin = value
case "git":
config.GitBin = value
case "gpg":
config.GpgBin = value
case "requestsplitn":
n, err := strconv.Atoi(value)
if err == nil && n > 0 {
config.RequestSplitN = n
}
case "sudoloop":
config.SudoLoop = true
case "nosudoloop":
config.SudoLoop = false
case "provides":
config.Provides = true
case "noprovides":
config.Provides = false
case "pgpfetch":
config.PGPFetch = true
case "nopgpfetch":
config.PGPFetch = false
case "upgrademenu":
config.UpgradeMenu = true
case "noupgrademenu":
config.UpgradeMenu = false
case "cleanmenu":
config.CleanMenu = true
case "nocleanmenu":
config.CleanMenu = false
case "diffmenu":
config.DiffMenu = true
case "nodiffmenu":
config.DiffMenu = false
case "editmenu":
config.EditMenu = true
case "noeditmenu":
config.EditMenu = false
case "useask":
config.UseAsk = true
case "nouseask":
config.UseAsk = false
case "combinedupgrade":
config.CombinedUpgrade = true
case "nocombinedupgrade":
config.CombinedUpgrade = false
case "a", "aur":
mode = ModeAUR
case "repo":
mode = ModeRepo
case "removemake":
config.RemoveMake = "yes"
case "noremovemake":
config.RemoveMake = "no"
case "askremovemake":
config.RemoveMake = "ask"
default:
return false
}
return true
}
func isOp(op string) bool {
switch op {
case "V", "version":
case "D", "database":
case "F", "files":
case "Q", "query":
case "R", "remove":
case "S", "sync":
case "T", "deptest":
case "U", "upgrade":
// yay specific
case "Y", "yay":
case "P", "show":
case "G", "getpkgbuild":
default:
return false
}
return true
}
func isGlobal(op string) bool {
switch op {
case "b", "dbpath":
case "r", "root":
case "v", "verbose":
case "arch":
case "cachedir":
case "color":
case "config":
case "debug":
case "gpgdir":
case "hookdir":
case "logfile":
case "noconfirm":
case "confirm":
default:
return false
}
return true
}
func hasParam(arg string) bool {
switch arg {
case "dbpath", "b":
case "root", "r":
case "sysroot":
case "config":
case "ignore":
case "assume-installed":
case "overwrite":
case "ask":
case "cachedir":
case "hookdir":
case "logfile":
case "ignoregroup":
case "arch":
case "print-format":
case "gpgdir":
case "color":
//yay params
case "mflags":
case "gpgflags":
case "gitflags":
case "builddir":
case "editor":
case "editorflags":
case "makepkg":
case "makepkgconf":
case "pacman":
case "tar":
case "git":
case "gpg":
case "requestsplitn":
case "answerclean":
case "answerdiff":
case "answeredit":
case "answerupgrade":
case "completioninterval":
case "sortby":
default:
return false
}
return true
}
// Parses short hand options such as:
// -Syu -b/some/path -
func (parser *arguments) parseShortOption(arg string, param string) (usedNext bool, err error) {
if arg == "-" {
err = parser.addArg("-")
return
}
arg = arg[1:]
for k, _char := range arg {
char := string(_char)
if hasParam(char) {
if k < len(arg)-1 {
err = parser.addParam(char, arg[k+1:])
} else {
usedNext = true
err = parser.addParam(char, param)
}
break
} else {
err = parser.addArg(char)
if err != nil {
return
}
}
}
return
}
// Parses full length options such as:
// --sync --refresh --sysupgrade --dbpath /some/path --
func (parser *arguments) parseLongOption(arg string, param string) (usedNext bool, err error) {
if arg == "--" {
err = parser.addArg(arg)
return
}
arg = arg[2:]
split := strings.SplitN(arg, "=", 2)
if len(split) == 2 {
err = parser.addParam(split[0], split[1])
} else if hasParam(arg) {
err = parser.addParam(arg, param)
usedNext = true
} else {
err = parser.addArg(arg)
}
return
}
func (parser *arguments) parseStdin() error {
scanner := bufio.NewScanner(os.Stdin)
scanner.Split(bufio.ScanLines)
for scanner.Scan() {
parser.addTarget(scanner.Text())
}
return os.Stdin.Close()
}
func (parser *arguments) parseCommandLine() (err error) {
args := os.Args[1:]
usedNext := false
if len(args) < 1 {
parser.parseShortOption("-Syu", "")
} else {
for k, arg := range args {
var nextArg string
if usedNext {
usedNext = false
continue
}
if k+1 < len(args) {
nextArg = args[k+1]
}
if parser.existsArg("--") {
parser.addTarget(arg)
} else if strings.HasPrefix(arg, "--") {
usedNext, err = parser.parseLongOption(arg, nextArg)
} else if strings.HasPrefix(arg, "-") {
usedNext, err = parser.parseShortOption(arg, nextArg)
} else {
parser.addTarget(arg)
}
if err != nil {
return
}
}
}
if parser.op == "" {
parser.op = "Y"
}
if parser.existsArg("-") {
var file *os.File
err = parser.parseStdin()
parser.delArg("-")
if err != nil {
return
}
file, err = os.Open("/dev/tty")
if err != nil {
return
}
os.Stdin = file
}
cmdArgs.extractYayOptions()
return
}
func (parser *arguments) extractYayOptions() {
for option, value := range parser.options {
if handleConfig(option, value) {
parser.delArg(option)
}
}
for option, value := range parser.globals {
if handleConfig(option, value) {
parser.delArg(option)
}
}
}
//parses input for number menus splitted by spaces or commas
//supports individual selection: 1 2 3 4
//supports range selections: 1-4 10-20
//supports negation: ^1 ^1-4
//
//include and excule holds numbers that should be added and should not be added
//respectively. other holds anything that can't be parsed as an int. This is
//intended to allow words inside of number menus. e.g. 'all' 'none' 'abort'
//of course the implementation is up to the caller, this function mearley parses
//the input and organizes it
func parseNumberMenu(input string) (intRanges, intRanges, stringSet, stringSet) {
include := make(intRanges, 0)
exclude := make(intRanges, 0)
otherInclude := make(stringSet)
otherExclude := make(stringSet)
words := strings.FieldsFunc(input, func(c rune) bool {
return unicode.IsSpace(c) || c == ','
})
for _, word := range words {
var num1 int
var num2 int
var err error
invert := false
other := otherInclude
if word[0] == '^' {
invert = true
other = otherExclude
word = word[1:]
}
ranges := strings.SplitN(word, "-", 2)
num1, err = strconv.Atoi(ranges[0])
if err != nil {
other.set(strings.ToLower(word))
continue
}
if len(ranges) == 2 {
num2, err = strconv.Atoi(ranges[1])
if err != nil {
other.set(strings.ToLower(word))
continue
}
} else {
num2 = num1
}
mi := min(num1, num2)
ma := max(num1, num2)
if !invert {
include = append(include, makeIntRange(mi, ma))
} else {
exclude = append(exclude, makeIntRange(mi, ma))
}
}
return include, exclude, otherInclude, otherExclude
}
// Crude html parsing, good enough for the arch news
// This is only displayed in the terminal so there should be no security
// concerns
func parseNews(str string) string {
var buffer bytes.Buffer
var tagBuffer bytes.Buffer
var escapeBuffer bytes.Buffer
inTag := false
inEscape := false
for _, char := range str {
if inTag {
if char == '>' {
inTag = false
switch tagBuffer.String() {
case "code":
buffer.WriteString(cyanCode)
case "/code":
buffer.WriteString(resetCode)
case "/p":
buffer.WriteRune('\n')
}
continue
}
tagBuffer.WriteRune(char)
continue
}
if inEscape {
if char == ';' {
inEscape = false
escapeBuffer.WriteRune(char)
s := html.UnescapeString(escapeBuffer.String())
buffer.WriteString(s)
continue
}
escapeBuffer.WriteRune(char)
continue
}
if char == '<' {
inTag = true
tagBuffer.Reset()
continue
}
if char == '&' {
inEscape = true
escapeBuffer.Reset()
escapeBuffer.WriteRune(char)
continue
}
buffer.WriteRune(char)
}
buffer.WriteString(resetCode)
return buffer.String()
}