Add hellogopher

.gitignore

@@ -22,3 +22,6 @@ _testmain.go
 *.exe
 *.test
 *.prof
+
+/.GOPATH
+/bin

Makefile

@@ -0,0 +1,79 @@
+IMPORT_PATH := github.com/FiloSottile/b2
+V := 1 # print commands and build progress by default
+IGNORED_PACKAGES := /vendor/ # space separated patterns
+
+.PHONY: b2
+b2: .GOPATH/.ok
+	$Q go install $(if $V,-v) $(VERSION_FLAGS) $(IMPORT_PATH)
+
+##### =====> Utility targets <===== #####
+
+.PHONY: clean test list cover format
+
+clean:
+	$Q rm -rf bin .GOPATH
+
+test: .GOPATH/.ok
+	$Q go test $(if $V,-v) -i -race $(allpackages) # install -race libs to speed up next run
+ifndef CI
+	$Q go vet $(allpackages)
+	$Q GODEBUG=cgocheck=2 go test -race $(allpackages)
+else
+	$Q go vet $(allpackages) | tee .GOPATH/test/vet.txt
+	$Q GODEBUG=cgocheck=2 go test -v -race $(allpackages) | tee .GOPATH/test/output.txt
+endif
+
+list: .GOPATH/.ok
+	@echo $(allpackages)
+
+cover: bin/gocovmerge .GOPATH/.ok
+	$Q rm -f .GOPATH/cover/*.out .GOPATH/cover/all.merged
+	$(if $V,@echo "-- go test -coverpkg=./... -coverprofile=.GOPATH/cover/... ./...")
+	$Q for MOD in $(allpackages); do \
+		go test -coverpkg=`echo $(allpackages)|tr " " ","` \
+			-coverprofile=.GOPATH/cover/unit-`echo $$MOD|tr "/" "_"`.out \
+			$$MOD 2>&1 | grep -v "no packages being tested depend on" || exit 1; \
+	done
+	$Q ./bin/gocovmerge .GOPATH/cover/*.out > .GOPATH/cover/all.merged
+ifndef CI
+	$Q go tool cover -html .GOPATH/cover/all.merged
+else
+	$Q go tool cover -html .GOPATH/cover/all.merged -o .GOPATH/cover/all.html
+endif
+	@echo ""
+	@echo "=====> Total test coverage: <====="
+	@echo ""
+	$Q go tool cover -func .GOPATH/cover/all.merged
+
+format: bin/goimports .GOPATH/.ok
+	$Q find .GOPATH/src/$(IMPORT_PATH)/ -iname \*.go | grep -v -e "^$$" $(addprefix -e ,$(IGNORED_PACKAGES)) | xargs ./bin/goimports -w
+
+##### =====> Internals <===== #####
+
+VERSION          := $(shell git describe --tags --always --dirty="-dev")
+DATE             := $(shell date '+%Y-%m-%d-%H%M UTC')
+VERSION_FLAGS    := -ldflags='-X "main.Version=$(VERSION)" -X "main.BuildTime=$(DATE)"'
+
+# cd into the GOPATH to workaround ./... not following symlinks (lazily computed)
+allpackages = $(eval allpackages := $(shell ( cd $(CURDIR)/.GOPATH/src/$(IMPORT_PATH) && \
+    GOPATH=$(CURDIR)/.GOPATH go list ./... 2>&1 1>&3 | \
+    grep -v -e "^$$" $(addprefix -e ,$(IGNORED_PACKAGES)) 1>&2 ) 3>&1 | \
+    grep -v -e "^$$" $(addprefix -e ,$(IGNORED_PACKAGES))))$(allpackages)
+
+export GOPATH := $(CURDIR)/.GOPATH
+
+Q := $(if $V,,@)
+
+.GOPATH/.ok:
+	$Q mkdir -p "$(dir .GOPATH/src/$(IMPORT_PATH))"
+	$Q ln -s ../../../.. ".GOPATH/src/$(IMPORT_PATH)"
+	$Q mkdir -p .GOPATH/test .GOPATH/cover
+	$Q mkdir -p bin
+	$Q ln -s ../bin .GOPATH/bin
+	$Q touch $@
+
+.PHONY: bin/gocovmerge bin/goimports
+bin/gocovmerge: .GOPATH/.ok
+	$Q go install $(IMPORT_PATH)/vendor/github.com/wadey/gocovmerge
+bin/goimports: .GOPATH/.ok
+	$Q go install $(IMPORT_PATH)/vendor/golang.org/x/tools/cmd/goimports