Add handler for git commit hash (#15)

* Add handler for git commit hash

* Handle both long (40) char hashes and short (7) char hashes.

* Handle commit hashes of any length between 7 and 40 characters.

* Add spec for commit handler

* Run stylua

* Update test/spec/gx/handlers/commit_handler_spec.lua

Co-authored-by: Christoph  <52382992+chrishrb@users.noreply.github.com>

* Update test/spec/gx/handlers/commit_handler_spec.lua

Co-authored-by: Christoph  <52382992+chrishrb@users.noreply.github.com>

---------

Co-authored-by: Christoph  <52382992+chrishrb@users.noreply.github.com>

Author: CKolkey

lua/gx/handler.lua

@@ -3,6 +3,7 @@ local package_json_handler = require("gx.handlers.package_json")
 local plugin_handler = require("gx.handlers.plugin")
 local url_handler = require("gx.handlers.url")
 local github_handler = require("gx.handlers.github")
+local commit_handler = require("gx.handlers.commit")
 local markdown_handler = require("gx.handlers.markdown")
 
 local M = {}
@@ -28,6 +29,7 @@ function M.get_url(mode, line, activated_handlers)
   add_handler(handlers, package_json_handler, activated_handlers.package_json)
   add_handler(handlers, plugin_handler, activated_handlers.plugin)
   add_handler(handlers, github_handler, activated_handlers.github)
+  add_handler(handlers, commit_handler, activated_handlers.github)
   add_handler(handlers, markdown_handler, true)
   add_handler(handlers, url_handler, true)
   -- ###

lua/gx/handlers/commit.lua

@@ -0,0 +1,24 @@
+local helper = require("gx.helper")
+local git = require("gx.git")
+
+local M = {}
+
+-- every filetype and filename
+M.filetype = nil
+M.filename = nil
+
+-- navigate to github url for commit
+function M.handle(mode, line)
+  local pattern = "(%x%x%x%x%x%x%x+)"
+  local commit_hash = helper.find(line, mode, pattern)
+  if not commit_hash or #commit_hash > 40 then
+    return
+  end
+  local git_url = git.get_remote_url()
+  if not git_url then
+    return
+  end
+  return git_url .. "/commit/" .. commit_hash
+end
+
+return M

test/spec/gx/handlers/commit_handler_spec.lua

@@ -0,0 +1,30 @@
+local handler = require("gx.handlers.commit")
+
+describe("commit_handler_does_work", function()
+  it("doesn't see a hash with < 7 characters", function()
+    assert.is_nil(handler.handle("v", "1a2b3c"))
+  end)
+
+  it("does see a hash with 7 characters", function()
+    assert.equals(
+      "https://github.com/chrishrb/gx.nvim/commit/1a2b3c4",
+      handler.handle("v", "1a2b3c4")
+    )
+  end)
+
+  it("does see a hash with 10 characters", function()
+    assert.equals(
+      "https://github.com/chrishrb/gx.nvim/commit/1a2b3c4d5f",
+      handler.handle("v", "1a2b3c4d5f")
+    )
+  end)
+
+  it("does see a hash with 40 characters", function()
+    local hash = "1a2b3c4d5f1a2b3c4d5f1a2b3c4d5f1a2b3c4d5f"
+    assert.equals("https://github.com/chrishrb/gx.nvim/commit/" .. hash, handler.handle("v", hash))
+  end)
+
+  it("doesn't see a hash with > 40 characters", function()
+    assert.is_nil(handler.handle("v", "1a2b3c4d5f1a2b3c4d5f1a2b3c4d5f1a2b3c4d5fa"))
+  end)
+end)