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Only process a path as a JAR if it exists and is a regular file #338

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merged 1 commit into from
Aug 29, 2024
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Only process a path as a JAR if it exists and is a regular file #338

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45 changes: 27 additions & 18 deletions classloader/src/main/java/io/smallrye/common/classloader/ClassPathUtils.java
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Original file line number Diff line number Diff line change
Expand Up @@ -132,25 +132,34 @@ public static void consumeAsPath(URL url, Consumer<Path> consumer) {
public static <R> R processAsPath(URL url, Function<Path, R> function) {
if (JAR.equals(url.getProtocol())) {
final String file = url.getFile();
final int exclam = file.indexOf("!/");
try {
URL fileUrl;
String subPath;
if (exclam == -1) {
// assume the first element is a JAR file, not a plain file, since it was a `jar:` URL
fileUrl = new URL(file);
subPath = "/";
} else {
fileUrl = new URL(file.substring(0, exclam));
subPath = file.substring(exclam + 1);
}
if (!fileUrl.getProtocol().equals("file")) {
throw new IllegalArgumentException("Sub-URL of JAR URL is expected to have a scheme of `file`");
}
int exclam = file.indexOf("!/");
for (;;) {
try {
URL fileUrl;
String subPath;
if (exclam == -1) {
// assume the first element is a JAR file, not a plain file, since it was a `jar:` URL
fileUrl = new URL(file);
subPath = "/";
} else {
fileUrl = new URL(file.substring(0, exclam));
subPath = file.substring(exclam + 1);
}
if (!fileUrl.getProtocol().equals("file")) {
throw new IllegalArgumentException("Sub-URL of JAR URL is expected to have a scheme of `file`");
}

return processAsJarPath(toLocalPath(fileUrl), subPath, function);
} catch (MalformedURLException e) {
throw new RuntimeException("Failed to create a URL for '" + file.substring(0, exclam) + "'", e);
Path proposedPath = toLocalPath(fileUrl);
if (Files.isRegularFile(proposedPath)) {
return processAsJarPath(proposedPath, subPath, function);
}
if (exclam == -1) {
throw new IllegalArgumentException("File not found: " + fileUrl);
}
exclam = file.indexOf("!/", exclam + 1);
} catch (MalformedURLException e) {
throw new RuntimeException("Failed to create a URL for '" + file.substring(0, exclam) + "'", e);
}
}
}

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