There are similar questions but all of them need you to clone repository and then run some utility on it.
I need a web-service which can give me those stats (something like using an URL e.g. http://my-sloc-counter.com/project1 to get SLOC stats for project1 from GitHub)
There is browser extension for Google Chrome named Gloc.
For GitHub specifically, you have a possibility to compute an approximation of that data (LOC: Lines of Code) through the GitHub Statistics API.
You can see an example in "Can you get the number of lines of code from a GitHub repository?", which does not involve cloning the repo.
More recently, you have the project jolav/codetabs (initally mentioned by Sclerosis), based on Curtis Gagliardi cgag/loc for counting lines of code.
It includes a service for counting lines for any public GitHub repository:
codetabs.com/count-loc/count-loc-online.html.
Example for my project: https://api.codetabs.com/v1/loc?github=vonc/seec
Problem (for both solutions): they do count the lines of all files inside a repo, so if you have vendored files like in a Go project, you will have a hard time distinguishing what you wrote from what you have vendored.
来源：https://stackoverflow.com/questions/35932418/count-number-of-lines-in-a-github-repository-without-cloning