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

Prepends a span with a CSS class 'ccv-[FILE EXT]' to the link text and appends a span with class 'filesize' containing the filesize to the link text

You're the kind of crazy every dev should be! Respect to this great work!

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