Jinal-Sarvaiya commented on code in PR #150:
URL: https://github.com/apache/camel-kit/pull/150#discussion_r4482677639
##########
kit/camel-kit-core/src/main/java/org/apache/camel/kit/ship/controller/ShipStageResult.java:
##########
@@ -280,6 +282,110 @@ private static void requireReport(String report) throws
IOException {
utf8(report, MAX_REPORT_BYTES, "stage report");
}
+ private static String extractJsonObject(String text) throws IOException {
+ if (text == null) {
+ return text;
+ }
+ String stripped = text.strip();
+ if (stripped.startsWith("{")) {
+ return stripped;
+ }
+ String fenced = extractFencedJson(text);
+ if (fenced != null) {
+ return fenced;
+ }
+ int start = text.indexOf('{');
+ int end = text.lastIndexOf('}');
+ if (start >= 0 && end > start) {
+ String prefix = text.substring(0, start).strip();
+ if (!prefix.isEmpty() && prefix.indexOf('[') >= 0) {
+ throw new IOException("Pi stage result is wrapped in an
array");
+ }
+ return text.substring(start, end + 1);
+ }
+ return stripped;
+ }
+
+ private static String extractFencedJson(String text) throws IOException {
+ String result = null;
+ int regionStart = -1;
+ int regionEnd = -1;
+ int pos = 0;
+ int len = text.length();
+
+ while (pos < len) {
+ int tick = text.indexOf("```", pos);
+ if (tick < 0) {
+ break;
+ }
+ if (tick > 0 && text.charAt(tick - 1) != '\n') {
+ pos = tick + 3;
+ continue;
+ }
+ int cur = tick + 3;
+ if (cur + 4 <= len && text.startsWith("json", cur)) {
+ cur += 4;
+ }
+ while (cur < len && (text.charAt(cur) == ' ' || text.charAt(cur)
== '\t')) {
+ cur++;
+ }
+ if (cur >= len || text.charAt(cur) != '\n') {
+ pos = tick + 3;
+ continue;
+ }
+ int contentStart = cur + 1;
+
+ int close = contentStart;
+ boolean found = false;
+ while (true) {
+ close = text.indexOf("\n```", close);
+ if (close < 0) {
+ break;
+ }
+ int afterClose = close + 4;
+ if (afterClose >= len || text.charAt(afterClose) == '\n') {
+ found = true;
+ break;
+ }
+ close = afterClose;
+ }
+ if (!found) {
+ pos = contentStart;
+ continue;
Review Comment:
Both quadratic paths eliminated. Regression coverage added for the exact
inputs from the review:
- "```json\n{\n".repeat(90_000) (900 KB): previously > 12 s, now completes
in < 2 s — **committed test:** malformedFenceOpenersDoNotCauseQuadraticScan PASS
- "\n".repeat(100_000) before one valid fenced envelope (100 KB): previously
> 12 s, now completes in < 2 s — committed test:
blankLinePrefixDoesNotCauseQuadraticScan PASS
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