Wildcard ignores

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 NEW FEATURES:
 
+* Wildcard ignore support. (#1156)
 * Disable SourceManager lock by setting `DEPNOLOCK` environment variable.
 (#1206)
 

cmd/dep/testdata/harness_tests/ensure/pkg-ignored/wildcard-ignore/final/Gopkg.toml

@@ -0,0 +1,5 @@
+ignored = ["github.com/golang/notexist/samples*"]
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/sdboyer/deptest"

cmd/dep/testdata/harness_tests/ensure/pkg-ignored/wildcard-ignore/initial/Gopkg.toml

@@ -0,0 +1,5 @@
+ignored = ["github.com/golang/notexist/samples*"]
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/sdboyer/deptest"

cmd/dep/testdata/harness_tests/ensure/pkg-ignored/wildcard-ignore/initial/main.go

@@ -0,0 +1,12 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+	_ "github.com/sdboyer/deptest"
+)
+
+func main() {
+}

cmd/dep/testdata/harness_tests/ensure/pkg-ignored/wildcard-ignore/initial/samples/samples.go

@@ -0,0 +1,7 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package samples
+
+import _ "github.com/sdboyer/deptestdos"

cmd/dep/testdata/harness_tests/ensure/pkg-ignored/wildcard-ignore/initial/samples/subsamples/subsamples.go

@@ -0,0 +1,7 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package subsamples
+
+import _ "github.com/sdboyer/dep-test"

cmd/dep/testdata/harness_tests/ensure/pkg-ignored/wildcard-ignore/testcase.json

@@ -0,0 +1,9 @@
+{
+  "commands": [
+    ["ensure"]
+  ],
+  "error-expected": "",
+  "vendor-final": [
+    "github.com/sdboyer/deptest"
+  ]
+}

docs/Gopkg.toml.md

@@ -36,6 +36,12 @@ You might also try [virtualgo](https://github.com/GetStream/vg), which installs
 ignored = ["github.com/user/project/badpkg"]
 ```
 
+Use wildcard character (*) to define a package prefix to be ignored. Use this
+to ignore any package and their subpackages.
+```toml
+ignored = ["github.com/user/project/badpkg*"]
+```
+
 **Use this for:** preventing a package and any of that package's unique
 dependencies from being installed.
 

internal/gps/hash.go

@@ -13,6 +13,8 @@ import (
 	"strings"
 )
 
+const wcIgnoreSuffix = "*"
+
 // string headers used to demarcate sections in hash input creation
 const (
 	hhConstraints = "-CONSTRAINTS-"
@@ -81,10 +83,24 @@ func (s *solver) writeHashingInputs(w io.Writer) {
 	writeString(hhIgnores)
 	ig := make([]string, 0, len(s.rd.ig))
 	for pkg := range s.rd.ig {
+		// Skip wildcard ignore. They are handled separately below.
+		if strings.HasSuffix(pkg, wcIgnoreSuffix) {
+			continue
+		}
+
 		if !strings.HasPrefix(pkg, s.rd.rpt.ImportRoot) || !isPathPrefixOrEqual(s.rd.rpt.ImportRoot, pkg) {
 			ig = append(ig, pkg)
 		}
 	}
+
+	// Add wildcard ignores to ignore list.
+	if s.rd.igpfx != nil {
+		s.rd.igpfx.Walk(func(s string, v interface{}) bool {
+			ig = append(ig, s+"*")
+			return false
+		})
+	}
+
 	sort.Strings(ig)
 
 	for _, igp := range ig {

internal/gps/hash_test.go

@@ -594,3 +594,94 @@ func diffHashingInputs(s Solver, wnt []string) string {
 	tw.Flush()
 	return buf.String()
 }
+
+func TestHashInputsIneffectualWildcardIgs(t *testing.T) {
+	fix := basicFixtures["shared dependency with overlapping constraints"]
+
+	rm := fix.rootmanifest().(simpleRootManifest).dup()
+
+	params := SolveParameters{
+		RootDir:         string(fix.ds[0].n),
+		RootPackageTree: fix.rootTree(),
+		Manifest:        rm,
+		ProjectAnalyzer: naiveAnalyzer{},
+		stdLibFn:        func(string) bool { return false },
+		mkBridgeFn:      overrideMkBridge,
+	}
+
+	cases := []struct {
+		name      string
+		ignoreMap map[string]bool
+		elems     []string
+	}{
+		{
+			name: "no wildcard ignores",
+			elems: []string{
+				hhConstraints,
+				"a",
+				"sv-1.0.0",
+				"b",
+				"sv-1.0.0",
+				hhImportsReqs,
+				"a",
+				"b",
+				hhIgnores,
+				hhOverrides,
+				hhAnalyzer,
+				"naive-analyzer",
+				"1",
+			},
+		},
+		{
+			name: "different wildcard ignores",
+			ignoreMap: map[string]bool{
+				"foobar*":    true,
+				"foobarbaz*": true,
+				"foozapbar*": true,
+			},
+			elems: []string{
+				hhConstraints,
+				"a",
+				"sv-1.0.0",
+				"b",
+				"sv-1.0.0",
+				hhImportsReqs,
+				"a",
+				"b",
+				hhIgnores,
+				"foobar*",
+				"foozapbar*",
+				hhOverrides,
+				hhAnalyzer,
+				"naive-analyzer",
+				"1",
+			},
+		},
+	}
+
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+
+			rm.ig = c.ignoreMap
+
+			params.Manifest = rm
+
+			s, err := Prepare(params, newdepspecSM(fix.ds, nil))
+			if err != nil {
+				t.Fatalf("Unexpected error while prepping solver: %s", err)
+			}
+
+			dig := s.HashInputs()
+			h := sha256.New()
+
+			for _, v := range c.elems {
+				h.Write([]byte(v))
+			}
+			correct := h.Sum(nil)
+
+			if !bytes.Equal(dig, correct) {
+				t.Errorf("Hashes are not equal. Inputs:\n%s", diffHashingInputs(s, c.elems))
+			}
+		})
+	}
+}

internal/gps/pkgtree/pkgtree.go

@@ -18,8 +18,13 @@ import (
 	"strconv"
 	"strings"
 	"unicode"
+
+	"github.com/armon/go-radix"
 )
 
+// wildcard ignore suffix
+const wcIgnoreSuffix = "*"
+
 // Package represents a Go package. It contains a subset of the information
 // go/build.Package does.
 type Package struct {
@@ -550,6 +555,9 @@ func (t PackageTree) ToReachMap(main, tests, backprop bool, ignore map[string]bo
 		ignore = make(map[string]bool)
 	}
 
+	// Radix tree for ignore prefixes.
+	xt := CreateIgnorePrefixTree(ignore)
+
 	// world's simplest adjacency list
 	workmap := make(map[string]wm)
 
@@ -572,6 +580,14 @@ func (t PackageTree) ToReachMap(main, tests, backprop bool, ignore map[string]bo
 			continue
 		}
 
+		if xt != nil {
+			// Skip ignored packages prefix matches
+			_, _, ok := xt.LongestPrefix(ip)
+			if ok {
+				continue
+			}
+		}
+
 		// TODO (kris-nova) Disable to get staticcheck passing
 		//imps = imps[:0]
 
@@ -1026,3 +1042,42 @@ func uniq(a []string) []string {
 	}
 	return a[:i]
 }
+
+// CreateIgnorePrefixTree takes a set of strings to be ignored and returns a
+// trie consisting of strings prefixed with wildcard ignore suffix (*).
+func CreateIgnorePrefixTree(ig map[string]bool) *radix.Tree {
+	var xt *radix.Tree
+
+	// Create a sorted list of all the ignores to have a proper order in
+	// ignores parsing.
+	sortedIgnores := make([]string, len(ig))
+	for k := range ig {
+		sortedIgnores = append(sortedIgnores, k)
+	}
+	sort.Strings(sortedIgnores)
+
+	for _, i := range sortedIgnores {
+		// Skip global ignore.
+		if i == "*" {
+			continue
+		}
+
+		// Check if it's a recursive ignore.
+		if strings.HasSuffix(i, wcIgnoreSuffix) {
+			// Create trie if it doesn't exists.
+			if xt == nil {
+				xt = radix.New()
+			}
+			// Check if it is ineffectual.
+			_, _, ok := xt.LongestPrefix(i)
+			if ok {
+				// Skip ineffectual wildcard ignore.
+				continue
+			}
+			// Create the ignore prefix and insert in the radix tree.
+			xt.Insert(i[:len(i)-len(wcIgnoreSuffix)], true)
+		}
+	}
+
+	return xt
+}