/**
* this method uses the appropriate lookup strategy to find a file. It is used by Kernel#require.
*
* @mri rb_find_file
* @param name the file to find, this is a path name
* @return the correct file
*/
protected LoadServiceResource findFileInClasspath(String name) {
// Look in classpath next (we do not use File as a test since UNC names will match)
// Note: Jar resources must NEVER begin with an '/'. (previous code said "always begin with a
// /")
ClassLoader classLoader = runtime.getJRubyClassLoader();
// handle security-sensitive case
if (Ruby.isSecurityRestricted() && classLoader == null) {
classLoader = runtime.getInstanceConfig().getLoader();
}
for (Iterator pathIter = loadPath.getList().iterator(); pathIter.hasNext(); ) {
String entry = pathIter.next().toString();
// if entry is an empty string, skip it
if (entry.length() == 0) continue;
// if entry starts with a slash, skip it since classloader resources never start with a /
if (entry.charAt(0) == '/' || (entry.length() > 1 && entry.charAt(1) == ':')) continue;
// otherwise, try to load from classpath (Note: Jar resources always uses '/')
debugLogTry("fileInClasspath", entry + "/" + name);
URL loc = classLoader.getResource(entry + "/" + name);
// Make sure this is not a directory or unavailable in some way
if (isRequireable(loc)) {
LoadServiceResource foundResource = new LoadServiceResource(loc, loc.getPath());
debugLogFound(foundResource);
return foundResource;
}
}
// if name starts with a / we're done (classloader resources won't load with an initial /)
if (name.charAt(0) == '/' || (name.length() > 1 && name.charAt(1) == ':')) return null;
// Try to load from classpath without prefix. "A/b.rb" will not load as
// "./A/b.rb" in a jar file.
debugLogTry("fileInClasspath", name);
URL loc = classLoader.getResource(name);
if (isRequireable(loc)) {
LoadServiceResource foundResource = new LoadServiceResource(loc, loc.getPath());
debugLogFound(foundResource);
return foundResource;
}
return null;
}
protected LoadServiceResource tryResourceFromLoadPathOrURL(
SearchState state, String baseName, SuffixType suffixType) {
LoadServiceResource foundResource = null;
// if it's a ./ baseName, use CWD logic
if (baseName.startsWith("./")) {
foundResource = tryResourceFromCWD(state, baseName, suffixType);
if (foundResource != null) {
state.loadName = foundResource.getName();
return foundResource;
}
}
// if given path is absolute, just try it as-is (with extensions) and no load path
if (new File(baseName).isAbsolute() || baseName.startsWith("../")) {
for (String suffix : suffixType.getSuffixes()) {
String namePlusSuffix = baseName + suffix;
foundResource = tryResourceAsIs(namePlusSuffix);
if (foundResource != null) {
state.loadName = namePlusSuffix;
return foundResource;
}
}
return null;
}
Outer:
for (Iterator pathIter = loadPath.getList().iterator(); pathIter.hasNext(); ) {
// TODO this is really inefficient, and potentially a problem everytime anyone require's
// something.
// we should try to make LoadPath a special array object.
String loadPathEntry = ((IRubyObject) pathIter.next()).toString();
if (loadPathEntry.equals(".") || loadPathEntry.equals("")) {
foundResource = tryResourceFromCWD(state, baseName, suffixType);
if (foundResource != null) {
String ss = foundResource.getName();
if (ss.startsWith("./")) {
ss = ss.substring(2);
}
state.loadName = ss;
break Outer;
}
} else {
for (String suffix : suffixType.getSuffixes()) {
String namePlusSuffix = baseName + suffix;
if (loadPathLooksLikeJarURL(loadPathEntry)) {
foundResource = tryResourceFromJarURLWithLoadPath(namePlusSuffix, loadPathEntry);
} else {
foundResource = tryResourceFromLoadPath(namePlusSuffix, loadPathEntry);
}
if (foundResource != null) {
String ss = namePlusSuffix;
if (ss.startsWith("./")) {
ss = ss.substring(2);
}
state.loadName = ss;
break Outer; // end suffix iteration
}
}
}
}
return foundResource;
}