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setGeneric("readHTMLList",
function(doc,
trim = TRUE, elFun = xmlValue,
which = integer(), ...)
standardGeneric("readHTMLList"))
setMethod("readHTMLList",
"character",
function(doc,
trim = TRUE, elFun = xmlValue,
which = integer(), encoding = character(), ...) {
readHTMLList(htmlParse(doc, encoding = encoding), trim, elFun, which, ...)
})
setMethod("readHTMLList",
"HTMLInternalDocument",
function(doc,
trim = TRUE, elFun = xmlValue,
which = integer(), ...) {
lists = getNodeSet(doc, "//ol | //ul | //dl")
if(length(which))
lists = lists[which]
ans = lapply(lists, readHTMLList, trim = trim, elFun = elFun)
if(length(which) == 1)
ans[[1]]
else
ans
})
setMethod("readHTMLList",
"XMLInternalNode",
function(doc,
trim = TRUE, elFun = xmlValue,
which = integer(), ...) {
if(xmlName(doc) == "dl")
return(readHTMLDefinitionList(doc, trim, elFun))
ans = unname(sapply(xmlChildren(doc)[!xmlSApply(doc, is, "XMLInternalTextNode")], elFun))
if(trim)
ans = unname(sapply(ans, function(x) if(is.character(x)) trim(x) else x))
ans
})
readHTMLDefinitionList =
function(node, trim = TRUE, elFun = xmlValue)
{
kids = xmlChildren(node)
structure(sapply(kids[names(node) == "dd"], elFun),
names = sapply(kids[names(node) == "dt"], elFun))
}
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