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package main
import (
"encoding/xml"
"fmt"
"regexp"
"strings"
)
// SupplementalData is the top level struct of plural.xml
type SupplementalData struct {
XMLName xml.Name `xml:"supplementalData"`
PluralGroups []PluralGroup `xml:"plurals>pluralRules"`
}
// PluralGroup is a group of locales with the same plural rules.
type PluralGroup struct {
Locales string `xml:"locales,attr"`
PluralRules []PluralRule `xml:"pluralRule"`
}
// Name returns a unique name for this plural group.
func (pg *PluralGroup) Name() string {
n := strings.Title(pg.Locales)
return strings.Replace(n, " ", "", -1)
}
// SplitLocales returns all the locales in the PluralGroup as a slice.
func (pg *PluralGroup) SplitLocales() []string {
return strings.Split(pg.Locales, " ")
}
// PluralRule is the rule for a single plural form.
type PluralRule struct {
Count string `xml:"count,attr"`
Rule string `xml:",innerxml"`
}
// CountTitle returns the title case of the PluralRule's count.
func (pr *PluralRule) CountTitle() string {
return strings.Title(pr.Count)
}
// Condition returns the condition where the PluralRule applies.
func (pr *PluralRule) Condition() string {
i := strings.Index(pr.Rule, "@")
return pr.Rule[:i]
}
// Examples returns the integer and decimal exmaples for the PLuralRule.
func (pr *PluralRule) Examples() (integer []string, decimal []string) {
ex := strings.Replace(pr.Rule, ", …", "", -1)
ddelim := "@decimal"
if i := strings.Index(ex, ddelim); i > 0 {
dex := strings.TrimSpace(ex[i+len(ddelim):])
decimal = strings.Split(dex, ", ")
ex = ex[:i]
}
idelim := "@integer"
if i := strings.Index(ex, idelim); i > 0 {
iex := strings.TrimSpace(ex[i+len(idelim):])
integer = strings.Split(iex, ", ")
}
return integer, decimal
}
// IntegerExamples returns the integer exmaples for the PLuralRule.
func (pr *PluralRule) IntegerExamples() []string {
integer, _ := pr.Examples()
return integer
}
// DecimalExamples returns the decimal exmaples for the PLuralRule.
func (pr *PluralRule) DecimalExamples() []string {
_, decimal := pr.Examples()
return decimal
}
var relationRegexp = regexp.MustCompile(`([niftvw])(?:\s*%\s*([0-9]+))?\s*(!=|=)(.*)`)
// GoCondition converts the XML condition to valid Go code.
func (pr *PluralRule) GoCondition() string {
var ors []string
for _, and := range strings.Split(pr.Condition(), "or") {
var ands []string
for _, relation := range strings.Split(and, "and") {
parts := relationRegexp.FindStringSubmatch(relation)
if parts == nil {
continue
}
lvar, lmod, op, rhs := strings.Title(parts[1]), parts[2], parts[3], strings.TrimSpace(parts[4])
if op == "=" {
op = "=="
}
lvar = "ops." + lvar
var rhor []string
var rany []string
for _, rh := range strings.Split(rhs, ",") {
if parts := strings.Split(rh, ".."); len(parts) == 2 {
from, to := parts[0], parts[1]
if lvar == "ops.N" {
if lmod != "" {
rhor = append(rhor, fmt.Sprintf("ops.NModInRange(%s, %s, %s)", lmod, from, to))
} else {
rhor = append(rhor, fmt.Sprintf("ops.NInRange(%s, %s)", from, to))
}
} else if lmod != "" {
rhor = append(rhor, fmt.Sprintf("intInRange(%s %% %s, %s, %s)", lvar, lmod, from, to))
} else {
rhor = append(rhor, fmt.Sprintf("intInRange(%s, %s, %s)", lvar, from, to))
}
} else {
rany = append(rany, rh)
}
}
if len(rany) > 0 {
rh := strings.Join(rany, ",")
if lvar == "ops.N" {
if lmod != "" {
rhor = append(rhor, fmt.Sprintf("ops.NModEqualsAny(%s, %s)", lmod, rh))
} else {
rhor = append(rhor, fmt.Sprintf("ops.NEqualsAny(%s)", rh))
}
} else if lmod != "" {
rhor = append(rhor, fmt.Sprintf("intEqualsAny(%s %% %s, %s)", lvar, lmod, rh))
} else {
rhor = append(rhor, fmt.Sprintf("intEqualsAny(%s, %s)", lvar, rh))
}
}
r := strings.Join(rhor, " || ")
if len(rhor) > 1 {
r = "(" + r + ")"
}
if op == "!=" {
r = "!" + r
}
ands = append(ands, r)
}
ors = append(ors, strings.Join(ands, " && "))
}
return strings.Join(ors, " ||\n")
}
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