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0
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1
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2 makeNamespace <- function(name, version = NULL, lib = NULL) {
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3 impenv <- new.env(parent = .BaseNamespaceEnv, hash = TRUE)
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4 attr(impenv, "name") <- paste("imports", name, sep = ":")
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5 env <- new.env(parent = impenv, hash = TRUE)
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6 name <- as.character(as.name(name))
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7 version <- as.character(version)
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8 info <- new.env(hash = TRUE, parent = baseenv())
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9 assign(".__NAMESPACE__.", info, envir = env)
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10 assign("spec", c(name = name, version = version),
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11 envir = info)
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12 setNamespaceInfo(env, "exports", new.env(hash = TRUE,
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13 parent = baseenv()))
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14 setNamespaceInfo(env, "imports", list(base = TRUE))
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15 setNamespaceInfo(env, "path", file.path(lib, name))
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16 setNamespaceInfo(env, "dynlibs", NULL)
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17 setNamespaceInfo(env, "S3methods", matrix(NA_character_,
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18 0L, 3L))
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19 assign(".__S3MethodsTable__.", new.env(hash = TRUE,
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20 parent = baseenv()), envir = env)
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21 .Internal(registerNamespace(name, env))
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22 env
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23 }
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24
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25 install <- function()
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26 {
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27 name <- "GL"
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28 ns <- makeNamespace(name)
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29 info <- ns$.__NAMESPACE__.
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30 # info$DLLs <- dyn.load("")
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31 with(ns,
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32 {
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33 dynbind("GL","glBegin()v;")
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34 .onUnload <- function()
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35 {
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36 .dynunload(.lib)
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37 }
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38 }
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39 )
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40 # ns$.packageName <- "stdio"
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41 namespaceExport( ns, ls(ns) )
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42 # attach(ns, name="dynport:GL")
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43 attachNamespace(ns)
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44 }
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45 install()
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46
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47
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48 unloadNamespace("stdio")
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49
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50
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51 # retrieve list of shared libraries loaded
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52
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53 library.dynam()
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54 .dynLibs()
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55 # load a specified library
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56
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57 .sys.lib.loc <- c("/opt/local/lib", "/opt/lib", "/usr/local/lib", "/usr/lib")
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58
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59 findLibPath <- function(name, lib.loc=.sys.lib.loc)
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60 {
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61 for(i in lib.loc) {
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62 trypath <- file.path(i, paste("lib", name,.Platform$dynlib.ext,sep="") )
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63 if ( file.exists(trypath) ) return(trypath)
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64 }
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65 NULL
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66 }
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67
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68 tests <- c("GL","SDL","expat")
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69
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70 sapply( tests, findLibPath )
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71
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72
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