Typoscript to modify typo3 filelinks to add icon and filesize without userFunc

parseFunc.ts

lib.parseFunc.tags.link {
  stdWrap.wrap {
    if {
      value = file
      equals.cObject = TEXT
      equals.cObject {
        data = parameters:allParams
        split {
          token = :
          cObjNum = 1 || 2
          1.current = 1
        }
      }
    }

    cObject = COA
    cObject {
      10 = FILES
      10 {
        files.stdWrap.data = parameters:allParams
        files.stdWrap.split {
          token.char = 32
          cObjNum = 1 |*| 2 |*| 2
          1 {
            current = 1
            split {
              token = :
              cObjNum = 1 || 2
              2.current = 1
            }
          }
        }
        renderObj = TEXT
        renderObj.stdWrap {
          data = file:current:extension
          wrap = <span class="ccv-|"></span>
        }
      }
      20 = TEXT
      20.value = |
      30 < .10
      30.renderObj.stdWrap {
        data = file:current:size
        bytes.labels = " | kB| MB| GB"
        bytes.base = 1000
        wrap = <span class="filesize">&nbsp;-&nbsp;|</span>
      }
    }
  }
}

lib.parseFunc_RTE.tags.link < lib.parseFunc.tags.link

For TYPO3 8.7, 9.5, 10.4

lib.parseFunc {
  tags.a.typolink {
    ATagBeforeWrap = 1
    wrap.cObject = FILES
    wrap.cObject {
      stdWrap.if {
        isPositive.data = parameters:href
        isPositive.stdWrap.replacement {
          10 {
              search = t3://file?uid=
              replace =
            }
        }
      }
      files.stdWrap < lib.parseFunc.tags.a.typolink.wrap.cObject.stdWrap.if.isPositive
      renderObj = COA
      renderObj {
        10 = TEXT
        10 {
          data = file:current:extension
          wrap = <span class="ccv-|"></span>
        }
        ## add splitChar to string
        15 = TEXT
        15.value = |
        20 = TEXT
        20 {
          data = file:current:size
          bytes = 1
          bytes.labels = " | kB| MB| GB"
          wrap = <span class="filesize">&nbsp;-&nbsp;|</span>
        }
      }
    }
  }
}
lib.parseFunc_RTE.tags.a.typolink.wrap.cObject < lib.parseFunc.tags.a.typolink.wrap.cObject