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package proxy
import (
"regexp"
)
var itemName = regexp.MustCompile("(item_image\\[[0-9.-]+,[0-9.-]+;[0-9.-]+,[0-9.-]+;)([a-zA-Z0-9-_.: ]+)(\\])")
var itemButtonName = regexp.MustCompile("(item_image_button\\[[0-9.-]+,[0-9.-]+;[0-9.-]+,[0-9.-]+;)([a-zA-Z0-9-_.: ]+)(;[a-zA-Z0-9-_.: ]+;[^\\[\\]]*\\])")
var textureName = regexp.MustCompile("([a-zA-Z0-9-_.]+\\.(?i:png|jpg|jpeg|bmp|tga|obj|b3d|x|gltf|glb))")
func (sc *ServerConn) prependFormspec(fs *string) {
*fs = ReplaceAllStringSubmatchFunc(textureName, *fs, func(groups []string) string {
return sc.mediaPool + "_" + groups[1]
})
*fs = ReplaceAllStringSubmatchFunc(itemName, *fs, func(groups []string) string {
return groups[1] + sc.name + "_" + groups[2] + groups[3]
})
*fs = ReplaceAllStringSubmatchFunc(itemButtonName, *fs, func(groups []string) string {
return groups[1] + sc.name + "_" + groups[2] + groups[3]
})
}
func ReplaceAllStringSubmatchFunc(re *regexp.Regexp, str string, repl func([]string) string) string {
result := ""
lastIndex := 0
for _, v := range re.FindAllSubmatchIndex([]byte(str), -1) {
groups := []string{}
for i := 0; i < len(v); i += 2 {
groups = append(groups, str[v[i]:v[i+1]])
}
result += str[lastIndex:v[0]] + repl(groups)
lastIndex = v[1]
}
return result + str[lastIndex:]
}
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