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# ==> countfreelists
# <== code=xx&free=xx&annotlines="xx"
# Returns the number of free lists available.
# code: 0 iff OK
# free: number of free lists available
# annotlines: list of names of annotation lines in the opened database separated by |
countfreelists <- function(socket = autosocket()){
writeLines("countfreelists", socket, sep = "\n")
answerFromServer <- readLines(socket, n = 1)
#
# Check that there is an answer from server:
#
if(length(answerFromServer) == 0){
warning("Empty answer from server")
return(NA)
}
#
# Build result:
#
resitem <- parser.socket(answerFromServer)
if(resitem[1] != "0"){
stop(paste("error code returned by server :", resitem[1]))
}
free <- as.numeric(resitem[2])
tmp <- substr(resitem[3], 2, nchar(resitem[3]) - 1)
annotlines <- unlist(strsplit(tmp, split = "|", fixed = TRUE))
return(list(free = free, annotlines = annotlines))
}
cfl <- countfreelists
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