https://github.com/cran/XML
Tip revision: 169eae30157f9f72819739567a80168687fecadd authored by Duncan Temple Lang on 22 April 2007, 00:00:00 UTC
version 1.7-2
version 1.7-2
Tip revision: 169eae3
createNode.R
xmlNode <-
function(name, ..., attrs = NULL, namespace = "")
{
kids <- lapply(list(...), asXMLNode)
kids = addNames(kids)
node <- list(name = name, attributes = attrs, children = kids, namespace=namespace)
class(node) <- c("XMLNode")
node
}
addNames =
function(kids, fromTag = TRUE)
{
if(fromTag)
names(kids) = sapply(kids, xmlName)
else if(length(names(kids)) == 0)
names(kids) <- sapply(kids,xmlName)
else if(any( idx <- names(kids) == ""))
names(kids)[idx] <- sapply(kids[idx], xmlName)
kids
}
"xmlChildren<-" <-
function(x, value) {
value = addNames(value)
x$children <- value
x
}
# It would be better tokenize this, but ...
XMLEntities =
c("&" = "amp", # order is important as if we insert an entity, then the next time we will see the &.
">" = "gt",
"<" = "lt",
"'" = "apos",
'"' = "quot")
insertEntities =
function(value, entities = XMLEntities)
{
pat = names(entities)
subs = paste("&", entities, ";", sep = "")
for(i in seq(along = entities))
value = gsub(pat[i], subs[i], value)
value
}
xmlTextNode <-
function(value, namespace = "", entities = XMLEntities)
{
node <- xmlNode("text", namespace = namespace)
if(length(entities))
value = insertEntities(value, XMLEntities)
node$value <- value
class(node) <- c("XMLTextNode", class(node))
if(length(entities))
class(node) <- c(class(node), "EntitiesEscaped")
node
}
xmlPINode <-
function(sys, value, namespace="")
{
x <- xmlNode(name=sys, namespace=namespace)
x$value <- value
class(x) <- c("XMLProcessingInstruction", class(x))
x
}
xmlCommentNode <-
function(text)
{
node <- xmlTextNode(text)
class(node) <- c("XMLCommentNode", class(node))
node
}
xmlCDataNode <-
function(...)
{
txt <- paste(..., collapse="")
node <- xmlNode("text")
node$value <- txt
class(node) <- c("XMLCDataNode", class(node))
node
}
asXMLNode <-
function(x)
{
if(!inherits(x, "XMLNode")) {
xmlTextNode(x)
} else {
x
}
}