| libxmlVersion {XML} | R Documentation |
libxmlVersion retrieves the version of the libxml
library used when installing this XML package.
libxmlFeatures returns a named logical vector
indicating which features are enabled.
libxmlVersion(runTime = FALSE) libxmlFeatures()
runTime |
a logical value indicating whether to retrieve the version information describing libxml when the R package was compiled or the run-time version. These may be different if a) a new version of libxml2 is installed after the package is installed, b) if the package was installed as a binary package built on a different machine. |
libxmlVersion returns a named list with
fields
major |
the major version number, either 1 or 2 indicating the old or new-style library. |
minor |
the within version release number. |
patch |
the within minor release version number |
libxmlFeatures returns a logical vector with names given by:
[1] "THREAD" "TREE" "OUTPUT" "PUSH" "READER"
[6] "PATTERN" "WRITER" "SAX1" "FTP" "HTTP"
[11] "VALID" "HTML" "LEGACY" "C14N" "CATALOG"
[16] "XPATH" "XPTR" "XINCLUDE" "ICONV" "ISO8859X"
[21] "UNICODE" "REGEXP" "AUTOMATA" "EXPR" "SCHEMAS"
[26] "SCHEMATRON" "MODULES" "DEBUG" "DEBUG_MEM" "DEBUG_RUN"
[31] "ZLIB"
Elements are either TRUE or FALSE indicating whether support
was activatd for that feature, or NA if that feature is not
part of the particular version of libcurl.
Duncan Temple Lang
http://www.w3.org/XML, http://www.xmlsoft.org, http://www.omegahat.net
ver <- libxmlVersion()
if(is.null(ver)) {
cat("Relly old version of libxml\n")
} else {
if(ver$major > 1) {
cat("Using libxml2\n")
}
}