Detecting and preventing noncompliant use of source code

A computer-readable storage device for detecting non-compliant use of portions of source code, the storage device having recorded and embodied thereon instructions that, when executed by one or more processors of a computer system, cause the computer system to:

• receive a location of one more source code files;
• determine that the location is a restricted location;
• create, in response to the receiving, a temporary index of tokenized statements for each of the one or more source code files;
• compare the temporary index for one or more source code files having the restricted location and a pre-calculated index of tokenized statements from source code files stored in a protected code location to identify a number of code clones in the one or more source code files;
• determine whether the number of identified code clones meets a threshold;
• and
• generate data used to alert a user that the restricted location contains code clones when it is determined that the number of identified code clones meets the threshold.

A computer-implemented method comprising:

• receiving, by one or more processors, a request to copy portions of one or more source code files from a source location to a destination location;
• identifying a number of code clones between the one or more source code files and source code from a protected code location;
• determining whether the number of identified code clones meets a threshold;
• determining whether the destination location is authorized to contain source code from the protected code location;
• and
• preventing one or more portions of the source code files from being copied from the source location to the destination location when it is determined that the number of identified clones meets the threshold and that the destination location is not authorized to contain source code from the protected code location.