Utility to convert between various subscription format
This report presents the forensic synthetic code analysis of tindy2013/subconverter, a C++ project with 16,863 GitHub stars. SynthScan v2.0 examined 70,636 lines of code across 160 source files, recording 307 pattern matches distributed across 4 syntactic categories. The overall adjusted score of 2.9 places this repository in the Likely human-written band.
The scanner applied 160+ deterministic lexical heuristics, multi-line block detectors, abstract syntax tree depth profilers, and a cross-file Jaccard similarity matrix to construct a statistically normalised synthetic code estimate. All matches are individually weighted by severity coefficient and contextual multiplier before summation, and the resulting headline score is temporally discounted to account for the repository's development history relative to the commercial emergence of large language model coding tooling (November 2022 onward).
Longitudinal tracking requires multiple scan runs. Once this repository is re-scanned after new commits land, this chart will visualise how the synthetic code signal evolves over time — enabling you to detect whether AI authorship is growing, stabilising, or being actively corrected by human engineers.
Classifies detected patterns by their diagnostic confidence and structural impact. CRITICAL patterns (coefficient 10) represent definitive synthetic signatures — hallucinated imports, explicit LLM attribution metadata — virtually never produced by human authors. HIGH (5) indicates strong structural tells such as cross-file repetition or cross-linguistic idioms. MEDIUM (2) covers recognisable conversational padding and AI-specific vocabulary. LOW (1) captures subtle indicators like tautological comments and generic boilerplate that require density to carry independent signal.
This horizontal bar chart decomposes the repository's raw synthetic code score by top-level directory, allowing you to pinpoint precisely which modules or components carry the highest AI authorship density. Directories with disproportionately high scores relative to their size warrant targeted manual review: concentrated AI signatures often trace back to mass-generated configuration layers, auto-ported test suites, LLM-scaffolded boilerplate classes, or entire subsystems authored under heavy copilot assistance. Use this view to prioritise your human code-review effort.
The scanner identified 307 distinct pattern matches across 4 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a statistically significant AI authorship indicator. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.
Reading the findings table: The Severity column indicates the diagnostic confidence level (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — comment-context matches receive a ×1.5 weight because LLMs systematically over-annotate. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier as dense clusters constitute far stronger evidence of synthetic authorship than isolated hits.
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | include/httplib.h | 1 | // | COMMENT |
| LOW | include/httplib.h | 21 | #ifndef CPPHTTPLIB_KEEPALIVE_MAX_COUNT | COMMENT |
| LOW | include/httplib.h | 41 | #ifndef CPPHTTPLIB_WRITE_TIMEOUT_SECOND | COMMENT |
| LOW | include/httplib.h | 61 | #ifndef CPPHTTPLIB_REQUEST_URI_MAX_LENGTH | COMMENT |
| LOW | include/httplib.h | 81 | #ifndef CPPHTTPLIB_FORM_URL_ENCODED_PAYLOAD_MAX_LENGTH | COMMENT |
| LOW | include/httplib.h | 101 | : 0)) | COMMENT |
| LOW | include/httplib.h | 121 | #ifndef _CRT_SECURE_NO_WARNINGS | COMMENT |
| LOW | include/httplib.h | 141 | #endif // _MSC_VER | COMMENT |
| LOW | include/httplib.h | 161 | #endif | COMMENT |
| LOW | include/httplib.h | 181 | #define NI_MAXHOST 1025 | COMMENT |
| LOW | include/httplib.h | 201 | COMMENT | |
| LOW | include/httplib.h | 221 | #include <iostream> | COMMENT |
| LOW | include/httplib.h | 241 | // these are defined in wincrypt.h and it breaks compilation if BoringSSL is | COMMENT |
| LOW | include/httplib.h | 261 | #include <openssl/evp.h> | COMMENT |
| LOW | include/jpcre2.hpp | 41 | * manually. In this case you will have to define `PCRE2_CODE_UNIT_WIDTH` before including `pcre2.h`. | COMMENT |
| LOW | include/jpcre2.hpp | 61 | //previous inclusion of pcre2.h will be respected and we won't try to include it twice. | COMMENT |
| LOW | include/jpcre2.hpp | 81 | #define JPCRE2_USE_MINIMUM_CXX_17 1 | COMMENT |
| LOW | include/jpcre2.hpp | 301 | mcontext, replacement, rlength, outputbuffer, outlengthptr); | COMMENT |
| LOW | include/jpcre2.hpp | 361 | //~ static Pcre2Type<8>::JitStack *jit_stack_create(PCRE2_SIZE startsize, PCRE2_SIZE maxsize, | COMMENT |
| LOW | include/jpcre2.hpp | 421 | PCRE2_SIZE rlength, | COMMENT |
| LOW | include/jpcre2.hpp | 481 | //~ Pcre2Type<16>::JitCallback callback_function, | COMMENT |
| LOW | include/jpcre2.hpp | 601 | static int set_newline(Pcre2Type<32>::CompileContext *ccontext, uint32_t value){ | COMMENT |
| LOW | include/jpcre2.hpp | 621 | //~ } | COMMENT |
| LOW | include/jpcre2.hpp | 981 | ///@param jo pointer to JPCRE2 match option that will be modified. | COMMENT |
| LOW | include/jpcre2.hpp | 1001 | ///@param x whether to add or remove the modifers. | COMMENT |
| LOW | include/jpcre2.hpp | 1201 | //specialization | COMMENT |
| LOW | include/jpcre2.hpp | 1221 | ///If you want to be specific, then here's the rule: | COMMENT |
| LOW | include/jpcre2.hpp | 1241 | #else | COMMENT |
| LOW | include/jpcre2.hpp | 1261 | #ifdef JPCRE2_USE_MINIMUM_CXX_11 | COMMENT |
| LOW | include/jpcre2.hpp | 1321 | ///@overload | COMMENT |
| LOW | include/jpcre2.hpp | 1501 | COMMENT | |
| LOW | include/jpcre2.hpp | 1521 | deepMove(rm); | COMMENT |
| LOW | include/jpcre2.hpp | 1601 | ///@see RegexReplace::getSubject() | COMMENT |
| LOW | include/jpcre2.hpp | 1701 | return vec_ntn; | COMMENT |
| LOW | include/jpcre2.hpp | 1721 | vec_num = v; | COMMENT |
| LOW | include/jpcre2.hpp | 1861 | ///Set the match context. | COMMENT |
| LOW | include/jpcre2.hpp | 1881 | ///User will be responsible for freeing the memory of the match data block. | COMMENT |
| LOW | include/jpcre2.hpp | 1901 | /// You can get the message with RegexMatch::getErrorMessage() function. | COMMENT |
| LOW | include/jpcre2.hpp | 1921 | jpcre2_match_opts = x ? jpcre2_match_opts | opt : jpcre2_match_opts & ~opt; | COMMENT |
| LOW | include/jpcre2.hpp | 1941 | /// @see Regex::addModifier() | COMMENT |
| LOW | include/jpcre2.hpp | 1981 | ///If you are using lambda function with capture, you must use the `std::function` approach. | COMMENT |
| LOW | include/jpcre2.hpp | 2001 | /// //Examples with lambda (>=C++11) | COMMENT |
| LOW | include/jpcre2.hpp | 2021 | ///This class does not allow object instantiation. | COMMENT |
| LOW | include/jpcre2.hpp | 2041 | ///a MatchEvaluator object with its default constructor: | COMMENT |
| LOW | include/jpcre2.hpp | 2061 | #endif | COMMENT |
| LOW | include/jpcre2.hpp | 2081 | /// | COMMENT |
| LOW | include/jpcre2.hpp | 2101 | /// In such cases, previous Match data can not be used to perform a new replacment operation with this second callba | COMMENT |
| LOW | include/jpcre2.hpp | 2121 | /// //In above, nreplace() populates jp::NumSub and jp::MapNtn with match data. | COMMENT |
| LOW | include/jpcre2.hpp | 2161 | typename MatchEvaluatorCallback<void*, MapNas const &, void*>::Callback callback2; | COMMENT |
| LOW | include/jpcre2.hpp | 2281 | /// .nreplace(); | COMMENT |
| LOW | include/jpcre2.hpp | 2441 | COMMENT | |
| LOW | include/jpcre2.hpp | 2461 | callback1 = mef; | COMMENT |
| LOW | include/jpcre2.hpp | 2481 | ///@param mef Callback function. | COMMENT |
| LOW | include/jpcre2.hpp | 2501 | ///```cpp | COMMENT |
| LOW | include/jpcre2.hpp | 2521 | ///```cpp | COMMENT |
| LOW | include/jpcre2.hpp | 2541 | ///@overload | COMMENT |
| LOW | include/jpcre2.hpp | 2561 | return *this; | COMMENT |
| LOW | include/jpcre2.hpp | 2581 | callback6 = mef; | COMMENT |
| LOW | include/jpcre2.hpp | 2761 | ///If buffer size proves to be enough to fit the resultant string | COMMENT |
| LOW | include/jpcre2.hpp | 2841 | ///It uses the `MatchEvaluatorCallback` function that was set with a constructor or `MatchEvaluator::setCallback | COMMENT |
| 244 more matches not shown… | ||||
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | include/jpcre2.hpp | 2179 | // Also, this approach proved to be more readable and robust. | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | scripts/update_rules.py | 84 | except Exception as e: | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | scripts/update_rules.py | 45 | CODE |