Add slice utils

go.sum

@@ -2,7 +2,6 @@ github.com/Masterminds/squirrel v1.1.0 h1:baP1qLdoQCeTw3ifCdOq2dkYc6vGcmRdaociKL
 github.com/Masterminds/squirrel v1.1.0/go.mod h1:yaPeOnPG5ZRwL9oKdTsO/prlkPbXWZlRVMQ/gGlzIuA=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 h1:xJ4a3vCFaGF/jqvzLMYoU8P317H5OQ+Via4RmuPwCS0=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
-github.com/bgentry/speakeasy v0.1.0 h1:ByYyxL9InA1OWqxJqqp2A5pYHUrCiAL6K3J+LKSsQkY=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
 github.com/coreos/go-semver v0.2.0 h1:3Jm3tLmsgAYcjC+4Up7hJrFBPr+n7rAqYeSw/SZazuY=
 github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
@@ -16,7 +15,6 @@ github.com/dgrijalva/jwt-go v3.2.0+incompatible h1:7qlOGliEKZXTDg6OTjfoBKDXWrumC
 github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
 github.com/dustin/go-humanize v0.0.0-20171111073723-bb3d318650d4 h1:qk/FSDDxo05wdJH28W+p5yivv7LuLYLRXPPD8KQCtZs=
 github.com/dustin/go-humanize v0.0.0-20171111073723-bb3d318650d4/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
-github.com/fatih/color v1.7.0 h1:DkWD4oS2D8LGGgTQ6IvwJJXSL5Vp2ffcQg58nFV38Ys=
 github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
 github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
@@ -50,13 +48,11 @@ github.com/grpc-ecosystem/grpc-gateway v1.4.1 h1:pX7cnDwSSmG0dR9yNjCQSSpmsJOqFdT
 github.com/grpc-ecosystem/grpc-gateway v1.4.1/go.mod h1:RSKVYQBd5MCa4OVpNdGskqpgL2+G+NZTnrVHpWWfpdw=
 github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
-github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
 github.com/jonboulle/clockwork v0.1.0 h1:VKV+ZcuP6l3yW9doeqz6ziZGgcynBVQO+obU0+0hcPo=
 github.com/jonboulle/clockwork v0.1.0/go.mod h1:Ii8DK3G1RaLaWxj9trq07+26W01tbo22gdxWY5EU2bo=
 github.com/jtolds/gls v4.2.1+incompatible h1:fSuqC+Gmlu6l/ZYAoZzx2pyucC8Xza35fpRVWLVmUEE=
 github.com/jtolds/gls v4.2.1+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
-github.com/kr/pty v1.0.0 h1:jR04h3bskdxb8xt+5B6MoxPwDhMCe0oEgxug4Ca1YSA=
 github.com/kr/pty v1.0.0/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/lann/builder v0.0.0-20180802200727-47ae307949d0 h1:SOEGU9fKiNWd/HOJuq6+3iTQz8KNCLtVX6idSoTLdUw=
 github.com/lann/builder v0.0.0-20180802200727-47ae307949d0/go.mod h1:dXGbAdH5GtBTC4WfIxhKZfyBF/HBFgRZSWwZ9g/He9o=
@@ -64,9 +60,7 @@ github.com/lann/ps v0.0.0-20150810152359-62de8c46ede0 h1:P6pPBnrTSX3DEVR4fDembhR
 github.com/lann/ps v0.0.0-20150810152359-62de8c46ede0/go.mod h1:vmVJ0l/dxyfGW6FmdpVm2joNMFikkuWg0EoCKLGUMNw=
 github.com/lib/pq v1.0.0 h1:X5PMW56eZitiTeO7tKzZxFCSpbFZJtkMMooicw2us9A=
 github.com/lib/pq v1.0.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
-github.com/mattn/go-colorable v0.0.9 h1:UVL0vNpWh04HeJXV0KLcaT7r06gOH2l4OW6ddYRUIY4=
 github.com/mattn/go-colorable v0.0.9/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=
-github.com/mattn/go-isatty v0.0.4 h1:bnP0vzxcAdeI1zdubAl5PjU6zsERjGZb7raWodagDYs=
 github.com/mattn/go-isatty v0.0.4/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
 github.com/mattn/go-runewidth v0.0.2/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU=
 github.com/mattn/go-sqlite3 v1.10.0 h1:jbhqpg7tQe4SupckyijYiy0mJJ/pRyHvXf7JdWK860o=
@@ -104,7 +98,6 @@ github.com/smartystreets/goconvey v0.0.0-20181108003508-044398e4856c h1:Ho+uVpke
 github.com/smartystreets/goconvey v0.0.0-20181108003508-044398e4856c/go.mod h1:XDJAKZRPZ1CvBcN2aX5YOUTYGHki24fSF0Iv48Ibg0s=
 github.com/soheilhy/cmux v0.1.4 h1:0HKaf1o97UwFjHH9o5XsHUOF+tqmdA7KEzXLpiyaw0E=
 github.com/soheilhy/cmux v0.1.4/go.mod h1:IM3LyeVVIOuxMH7sFAkER9+bJ4dT7Ms6E4xg4kGIyLM=
-github.com/spf13/cobra v0.0.3 h1:ZlrZ4XsMRm04Fr5pSFxBgfND2EBVa1nLpiy1stUsX/8=
 github.com/spf13/cobra v0.0.3/go.mod h1:1l0Ry5zgKvJasoi3XT1TypsSe7PqH0Sj9dhYf7v3XqQ=
 github.com/spf13/pflag v1.0.1 h1:aCvUg6QPl3ibpQUxyLkrEkCHtPqYJL4x9AuhqVqFis4=
 github.com/spf13/pflag v1.0.1/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
@@ -131,11 +124,9 @@ golang.org/x/crypto v0.0.0-20180608092829-8ac0e0d97ce4/go.mod h1:6SG95UA2DQfeDnf
 golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9 h1:mKdxBk7AujPs8kU4m80U72y/zjbZ3UcXC7dClwKbUI0=
 golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20180906233101-161cd47e91fd h1:nTDtHvHSdCn1m6ITfMRqtOd/9+7a3s8RBNOZ3eYZzJA=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e h1:bRhVy7zSSasaqNksaRZiA5EEI+Ei4I1nO5Jh72wfHlg=
 golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f h1:wMNYb4v58l5UBM7MYRLPG6ZhfOqbKu7X5eyFl8ZhKvA=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4 h1:YUO/7uOKsKeq9UokNS62b8FYywz3ker1l1vDZRCRefw=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=

internal/util/slice.go

@@ -0,0 +1,85 @@
+// Copyright 2019 Sorint.lab
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package util
+
+import "sort"
+
+func StringInSlice(s []string, e string) bool {
+	for _, v := range s {
+		if v == e {
+			return true
+		}
+	}
+	return false
+}
+
+// CompareStringSlice compares two slices of strings, a nil slice is considered an empty one
+func CompareStringSlice(a []string, b []string) bool {
+	if len(a) != len(b) {
+		return false
+	}
+
+	for i, v := range a {
+		if v != b[i] {
+			return false
+		}
+	}
+	return true
+}
+
+// CompareStringSliceNoOrder compares two slices of strings regardless of their order, a nil slice is considered an empty one
+func CompareStringSliceNoOrder(a []string, b []string) bool {
+	if len(a) != len(b) {
+		return false
+	}
+
+	// This isn't the faster way but it's cleaner and enough for us
+
+	// Take a copy of the original slice
+	a = append([]string(nil), a...)
+	b = append([]string(nil), b...)
+
+	sort.Sort(sort.StringSlice(a))
+	sort.Sort(sort.StringSlice(b))
+
+	for i, v := range a {
+		if v != b[i] {
+			return false
+		}
+	}
+	return true
+}
+
+// CommonElements return the common elements in two slices of strings
+func CommonElements(a []string, b []string) []string {
+	common := []string{}
+	for _, v := range a {
+		if StringInSlice(b, v) {
+			common = append(common, v)
+		}
+	}
+	return common
+}
+
+// Difference returns elements in a - b
+func Difference(a []string, b []string) []string {
+	diff := []string{}
+	for _, v := range a {
+		if !StringInSlice(b, v) {
+			diff = append(diff, v)
+		}
+	}
+	return diff
+}

internal/util/slice_test.go

@@ -0,0 +1,99 @@
+// Copyright 2019 Sorint.lab
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package util
+
+import "testing"
+
+func TestCompareStringSlice(t *testing.T) {
+	tests := []struct {
+		a  []string
+		b  []string
+		ok bool
+	}{
+		{[]string{}, []string{}, true},
+		{[]string{"", ""}, []string{""}, false},
+		{[]string{"", ""}, []string{"", ""}, true},
+		{[]string{"a", "b"}, []string{"a", "b"}, true},
+		{[]string{"a", "b"}, []string{"b", "a"}, false},
+		{[]string{"a", "b", "c"}, []string{"a", "b"}, false},
+		{[]string{"a", "b", "c"}, []string{"a", "b", "c"}, true},
+		{[]string{"a", "b", "c"}, []string{"b", "c", "a"}, false},
+		{[]string{"a", "b", "c", "a"}, []string{"a", "c", "b", "b"}, false},
+		{[]string{"a", "b", "c", "a"}, []string{"a", "c", "b", "b"}, false},
+	}
+
+	for i, tt := range tests {
+		ok := CompareStringSlice(tt.a, tt.b)
+		if ok != tt.ok {
+			t.Errorf("%d: got %t but wanted: %t a: %v, b: %v", i, ok, tt.ok, tt.a, tt.b)
+		}
+	}
+}
+
+func TestCompareStringSliceNoOrder(t *testing.T) {
+	tests := []struct {
+		a  []string
+		b  []string
+		ok bool
+	}{
+		{[]string{}, []string{}, true},
+		{[]string{"", ""}, []string{""}, false},
+		{[]string{"", ""}, []string{"", ""}, true},
+		{[]string{"a", "b"}, []string{"a", "b"}, true},
+		{[]string{"a", "b"}, []string{"b", "a"}, true},
+		{[]string{"a", "b", "c"}, []string{"a", "b"}, false},
+		{[]string{"a", "b", "c"}, []string{"a", "b", "c"}, true},
+		{[]string{"a", "b", "c"}, []string{"b", "c", "a"}, true},
+		{[]string{"a", "b", "c", "a"}, []string{"a", "c", "b", "b"}, false},
+		{[]string{"a", "b", "c", "a"}, []string{"a", "c", "b", "b"}, false},
+	}
+
+	for i, tt := range tests {
+		ok := CompareStringSliceNoOrder(tt.a, tt.b)
+		if ok != tt.ok {
+			t.Errorf("%d: got %t but wanted: %t a: %v, b: %v", i, ok, tt.ok, tt.a, tt.b)
+		}
+	}
+}
+
+func TestDifference(t *testing.T) {
+	tests := []struct {
+		a []string
+		b []string
+		r []string
+	}{
+		{[]string{}, []string{}, []string{}},
+		{[]string{"", ""}, []string{""}, []string{}},
+		{[]string{"", ""}, []string{"", ""}, []string{}},
+		{[]string{"", ""}, []string{"a", "", "b"}, []string{}},
+		{[]string{"a", "b"}, []string{"a", "b"}, []string{}},
+		{[]string{"a", "b"}, []string{"b", "a"}, []string{}},
+		{[]string{"a", "b", "c"}, []string{}, []string{"a", "b", "c"}},
+		{[]string{"a", "b", "c"}, []string{"a", "b"}, []string{"c"}},
+		{[]string{"a", "b"}, []string{"a", "b", "c"}, []string{}},
+		{[]string{"a", "b"}, []string{"c", "a", "b"}, []string{}},
+		{[]string{"a", "b", "c"}, []string{"a", "b", "c"}, []string{}},
+		{[]string{"a", "b", "c"}, []string{"b", "c", "a"}, []string{}},
+		{[]string{"a", "b", "c", "a"}, []string{"a", "c", "b", "b"}, []string{}},
+		{[]string{"a", "b", "c", "a"}, []string{"a", "c", "b", "b"}, []string{}},
+	}
+
+	for i, tt := range tests {
+		r := Difference(tt.a, tt.b)
+		if !CompareStringSliceNoOrder(r, tt.r) {
+			t.Errorf("%d: got %v but wanted: %v a: %v, b: %v", i, r, tt.r, tt.a, tt.b)
+		}
+	}
+}

internal/util/string.go

@@ -0,0 +1,44 @@
+// Copyright 2019 Sorint.lab
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package util
+
+import (
+	"bufio"
+	"io"
+	"strings"
+)
+
+func CountLines(s string) (uint, error) {
+	count := uint(0)
+
+	// use a reader instead of a scanner
+	br := bufio.NewReader(strings.NewReader(s))
+
+	stop := false
+	for {
+		if stop {
+			break
+		}
+		_, err := br.ReadBytes('\n')
+		if err != nil {
+			if err != io.EOF {
+				return 0, err
+			}
+			stop = true
+		}
+		count++
+	}
+	return count, nil
+}