diff --git a/.golangci.example.yml b/.golangci.example.yml
index 251d0113..b0b99f79 100644
--- a/.golangci.example.yml
+++ b/.golangci.example.yml
@@ -31,6 +31,11 @@ linters-settings:
goconst:
min-len: 3
min-occurrences: 3
+ depguard:
+ list-type: blacklist
+ include-go-root: false
+ packages:
+ - github.com/davecgh/go-spew/spew
linters:
enable:
diff --git a/Gopkg.lock b/Gopkg.lock
index 0d484792..556c6f14 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -11,6 +11,12 @@
revision = "a9de4d6c1589158e002cc336c495bf11fbf3ea06"
source = "github.com/golangci/gas"
+[[projects]]
+ branch = "master"
+ name = "github.com/OpenPeeDeeP/depguard"
+ packages = ["."]
+ revision = "f2dff4f73566d1b9bd73f9bfd765030fbae5263a"
+
[[projects]]
name = "github.com/StackExchange/wmi"
packages = ["."]
@@ -410,6 +416,6 @@
[solve-meta]
analyzer-name = "dep"
analyzer-version = 1
- inputs-digest = "8cfc9eb6d890be05e9a019a4537c3fba5bcaf25a396437d0a8b402f6cc244d2e"
+ inputs-digest = "832e18c919daf77730cda91687bfd2d0b0b70fe6283c38b33e48ed89c2fd2def"
solver-name = "gps-cdcl"
solver-version = 1
diff --git a/Gopkg.toml b/Gopkg.toml
index 4ca2cf7b..4c41aac1 100644
--- a/Gopkg.toml
+++ b/Gopkg.toml
@@ -112,3 +112,7 @@
[[override]]
branch = "master"
name = "github.com/golangci/lint"
+
+[[constraint]]
+ branch = "master"
+ name = "github.com/OpenPeeDeeP/depguard"
diff --git a/README.md b/README.md
index 2031f317..c0367b67 100644
--- a/README.md
+++ b/README.md
@@ -104,6 +104,7 @@ gofmt: Gofmt checks whether code was gofmt-ed. By default this tool runs with -s
goimports: Goimports does everything that gofmt does. Additionally it checks unused imports
maligned: Tool to detect Go structs that would take less memory if their fields were sorted
megacheck: 3 sub-linters in one: unused, gosimple and staticcheck
+depguard: Go linter that checks if package imports are in a list of acceptable packages
```
Pass `-E/--enable` to enable linter and `-D/--disable` to disable:
@@ -196,6 +197,7 @@ golangci-lint linters
- [goimports](https://godoc.org/golang.org/x/tools/cmd/goimports): Goimports does everything that gofmt does. Additionally it checks unused imports
- [maligned](https://github.com/mdempsky/maligned): Tool to detect Go structs that would take less memory if their fields were sorted
- [megacheck](https://github.com/dominikh/go-tools/tree/master/cmd/megacheck): 3 sub-linters in one: unused, gosimple and staticcheck
+- [depguard](https://github.com/OpenPeeDeeP/depguard): Go linter that checks if package imports are in a list of acceptable packages
# Configuration
## Command-Line Options
@@ -231,7 +233,7 @@ Linters presets:
bugs: govet, errcheck, staticcheck, gas, megacheck
unused: unused, structcheck, varcheck, ineffassign, deadcode, megacheck
format: gofmt, goimports
-style: golint, gosimple, interfacer, unconvert, dupl, goconst, megacheck
+style: golint, gosimple, interfacer, unconvert, dupl, goconst, megacheck, depguard
complexity: gocyclo
performance: maligned
```
@@ -427,6 +429,7 @@ Thanks to developers and authors of used linters:
- [golang/x/tools/goimports](https://godoc.org/golang.org/x/tools/cmd/goimports)
- [mdempsky/maligned](https://github.com/mdempsky/maligned)
- [dominikh/go-tools/megacheck](https://github.com/dominikh/go-tools/tree/master/cmd/megacheck)
+- [OpenPeeDeeP/depguard](https://github.com/OpenPeeDeeP/depguard)
# Future Plans
1. Upstream all changes of forked linters.
diff --git a/pkg/commands/run.go b/pkg/commands/run.go
index a2a9c177..eb9fc6df 100644
--- a/pkg/commands/run.go
+++ b/pkg/commands/run.go
@@ -88,6 +88,18 @@ func (e *Executor) initRun() {
runCmd.Flags().IntVar(&lsc.Goconst.MinOccurrencesCount, "goconst.min-occurrences",
3, "Goconst: minimum occurrences of constant string count to trigger issue")
+ // (@dixonwille) These flag is only used for testing purposes.
+ runCmd.Flags().StringSliceVar(&lsc.Depguard.Packages, "depguard.packages", nil,
+ "Depguard: packages to add to the list")
+ if err := runCmd.Flags().MarkHidden("depguard.packages"); err != nil {
+ panic(err) //Considering The only time this is called is if name does not exist
+ }
+ runCmd.Flags().BoolVar(&lsc.Depguard.IncludeGoRoot, "depguard.include-go-root", false,
+ "Depguard: check list against standard lib")
+ if err := runCmd.Flags().MarkHidden("depguard.include-go-root"); err != nil {
+ panic(err) //Considering The only time this is called is if name does not exist
+ }
+
// Linters config
lc := &e.cfg.Linters
runCmd.Flags().StringSliceVarP(&lc.Enable, "enable", "E", []string{}, "Enable specific linter")
diff --git a/pkg/config/config.go b/pkg/config/config.go
index 3ae69dd9..4de22e5c 100644
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@@ -91,6 +91,11 @@ type LintersSettings struct {
MinStringLen int `mapstructure:"min-len"`
MinOccurrencesCount int `mapstructure:"min-occurrences"`
}
+ Depguard struct {
+ ListType string `mapstructure:"list-type"`
+ Packages []string
+ IncludeGoRoot bool `mapstructure:"inlude-go-root"`
+ }
}
type Linters struct {
diff --git a/pkg/enabled_linters.go b/pkg/enabled_linters.go
index ddb016b5..ce3c9f02 100644
--- a/pkg/enabled_linters.go
+++ b/pkg/enabled_linters.go
@@ -125,6 +125,7 @@ func GetAllSupportedLinterConfigs() []LinterConfig {
newLinterConfig(golinters.Maligned{}).WithFullImport().WithPresets(PresetPerformance).WithSpeed(10),
newLinterConfig(golinters.Megacheck{GosimpleEnabled: true, UnusedEnabled: true, StaticcheckEnabled: true}).
WithSSA().WithPresets(PresetStyle, PresetBugs, PresetUnused).WithSpeed(1),
+ newLinterConfig(golinters.Depguard{}).WithFullImport().WithPresets(PresetStyle).WithSpeed(6),
}
if os.Getenv("GOLANGCI_COM_RUN") == "1" {
diff --git a/pkg/enabled_linters_test.go b/pkg/enabled_linters_test.go
index 2d026d46..9bd197b3 100644
--- a/pkg/enabled_linters_test.go
+++ b/pkg/enabled_linters_test.go
@@ -100,6 +100,8 @@ func testOneSource(t *testing.T, sourcePath string) {
"--out-format=line-number",
"--print-welcome=false",
"--govet.check-shadowing=true",
+ "--depguard.include-go-root",
+ "--depguard.packages='log'",
sourcePath)
runGoErrchk(cmd, t)
}
diff --git a/pkg/golinters/depguard.go b/pkg/golinters/depguard.go
new file mode 100644
index 00000000..8bef16a2
--- /dev/null
+++ b/pkg/golinters/depguard.go
@@ -0,0 +1,57 @@
+package golinters
+
+import (
+ "context"
+ "fmt"
+ "strings"
+
+ depguardAPI "github.com/OpenPeeDeeP/depguard"
+ "github.com/golangci/golangci-lint/pkg/result"
+)
+
+type Depguard struct{}
+
+func (Depguard) Name() string {
+ return "depguard"
+}
+
+func (Depguard) Desc() string {
+ return "Go linter that checks if package imports are in a list of acceptable packages"
+}
+
+func (d Depguard) Run(ctx context.Context, lintCtx *Context) ([]result.Issue, error) {
+ dg := &depguardAPI.Depguard{
+ Packages: lintCtx.Settings().Depguard.Packages,
+ IncludeGoRoot: lintCtx.Settings().Depguard.IncludeGoRoot,
+ }
+ listType := lintCtx.Settings().Depguard.ListType
+ var found bool
+ dg.ListType, found = depguardAPI.StringToListType[strings.ToLower(listType)]
+ if !found {
+ if listType != "" {
+ return nil, fmt.Errorf("unsure what list type %s is", listType)
+ }
+ dg.ListType = depguardAPI.LTBlacklist
+ }
+
+ issues, err := dg.Run(lintCtx.LoaderConfig, lintCtx.Program)
+ if err != nil {
+ return nil, err
+ }
+ if len(issues) == 0 {
+ return nil, nil
+ }
+ msgSuffix := "is in the blacklist"
+ if dg.ListType == depguardAPI.LTWhitelist {
+ msgSuffix = "is not in the whitelist"
+ }
+ res := make([]result.Issue, 0, len(issues))
+ for _, i := range issues {
+ res = append(res, result.Issue{
+ Pos: i.Position,
+ Text: fmt.Sprintf("%s %s", formatCode(i.PackageName, lintCtx.Cfg), msgSuffix),
+ FromLinter: d.Name(),
+ })
+ }
+ return res, nil
+}
diff --git a/pkg/testdata/with_issues/depguard.go b/pkg/testdata/with_issues/depguard.go
new file mode 100644
index 00000000..9ed1640a
--- /dev/null
+++ b/pkg/testdata/with_issues/depguard.go
@@ -0,0 +1,9 @@
+package testdata
+
+import (
+ "log" // ERROR "`log` is in the blacklist"
+)
+
+func SpewDebugInfo() {
+ log.Println("Debug info")
+}
diff --git a/pkg/testdata/with_issues/gas.go b/pkg/testdata/with_issues/gas.go
index 286164f3..6ba96de3 100644
--- a/pkg/testdata/with_issues/gas.go
+++ b/pkg/testdata/with_issues/gas.go
@@ -2,7 +2,7 @@ package testdata
import (
"crypto/md5" // ERROR "G501: Blacklisted import crypto/md5: weak cryptographic primitive"
- "log"
+ "log" // nolint:depguard
)
func Gas() {
diff --git a/pkg/testdata/with_issues/unconvert.go b/pkg/testdata/with_issues/unconvert.go
index 85e4fb41..97399673 100644
--- a/pkg/testdata/with_issues/unconvert.go
+++ b/pkg/testdata/with_issues/unconvert.go
@@ -1,6 +1,6 @@
package testdata
-import "log"
+import "log" // nolint:depguard
func Unconvert() {
a := 1
diff --git a/vendor/github.com/OpenPeeDeeP/depguard/.gitignore b/vendor/github.com/OpenPeeDeeP/depguard/.gitignore
new file mode 100644
index 00000000..f1c181ec
--- /dev/null
+++ b/vendor/github.com/OpenPeeDeeP/depguard/.gitignore
@@ -0,0 +1,12 @@
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, build with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
diff --git a/vendor/github.com/OpenPeeDeeP/depguard/Gopkg.lock b/vendor/github.com/OpenPeeDeeP/depguard/Gopkg.lock
new file mode 100644
index 00000000..4fcbbe11
--- /dev/null
+++ b/vendor/github.com/OpenPeeDeeP/depguard/Gopkg.lock
@@ -0,0 +1,28 @@
+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+ name = "github.com/kisielk/gotool"
+ packages = [
+ ".",
+ "internal/load"
+ ]
+ revision = "80517062f582ea3340cd4baf70e86d539ae7d84d"
+ version = "v1.0.0"
+
+[[projects]]
+ branch = "master"
+ name = "golang.org/x/tools"
+ packages = [
+ "go/ast/astutil",
+ "go/buildutil",
+ "go/loader"
+ ]
+ revision = "a5b4c53f6e8bdcafa95a94671bf2d1203365858b"
+
+[solve-meta]
+ analyzer-name = "dep"
+ analyzer-version = 1
+ inputs-digest = "d82a46da1f8e74876d14c0aa629966b2d180652e4cb74607a74cfd2bd9574905"
+ solver-name = "gps-cdcl"
+ solver-version = 1
diff --git a/vendor/github.com/OpenPeeDeeP/depguard/Gopkg.toml b/vendor/github.com/OpenPeeDeeP/depguard/Gopkg.toml
new file mode 100644
index 00000000..ba576822
--- /dev/null
+++ b/vendor/github.com/OpenPeeDeeP/depguard/Gopkg.toml
@@ -0,0 +1,39 @@
+# Gopkg.toml example
+#
+# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+# name = "github.com/user/project"
+# version = "1.0.0"
+#
+# [[constraint]]
+# name = "github.com/user/project2"
+# branch = "dev"
+# source = "github.com/myfork/project2"
+#
+# [[override]]
+# name = "github.com/x/y"
+# version = "2.4.0"
+#
+# [prune]
+# non-go = false
+# go-tests = true
+# unused-packages = true
+
+ignored = ["github.com/davecgh/go-spew/spew"]
+
+[prune]
+ go-tests = true
+ unused-packages = true
+
+[[constraint]]
+ name = "github.com/kisielk/gotool"
+ version = "1.0.0"
+
+[[constraint]]
+ branch = "master"
+ name = "golang.org/x/tools"
diff --git a/vendor/github.com/OpenPeeDeeP/depguard/LICENSE b/vendor/github.com/OpenPeeDeeP/depguard/LICENSE
new file mode 100644
index 00000000..94a9ed02
--- /dev/null
+++ b/vendor/github.com/OpenPeeDeeP/depguard/LICENSE
@@ -0,0 +1,674 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc.
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+ The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works. By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users. We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors. You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+ To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights. Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+ For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received. You must make sure that they, too, receive
+or can get the source code. And you must show them these terms so they
+know their rights.
+
+ Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+ For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software. For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+ Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so. This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software. The systematic
+pattern of such abuse occurs in the area of products for individuals to
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+ Finally, every program is threatened constantly by software patents.
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+patents cannot be used to render the program non-free.
+
+ The precise terms and conditions for copying, distribution and
+modification follow.
+
+ TERMS AND CONDITIONS
+
+ 0. Definitions.
+
+ "This License" refers to version 3 of the GNU General Public License.
+
+ "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+ "The Program" refers to any copyrightable work licensed under this
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+ 11. Patents.
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+ A contributor's "essential patent claims" are all patent claims
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+ A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
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+or that patent license was granted, prior to 28 March 2007.
+
+ Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+ 12. No Surrender of Others' Freedom.
+
+ If conditions are imposed on you (whether by court order, agreement or
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+License would be to refrain entirely from conveying the Program.
+
+ 13. Use with the GNU Affero General Public License.
+
+ Notwithstanding any other provision of this License, you have
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+ 14. Revised Versions of this License.
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+be similar in spirit to the present version, but may differ in detail to
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+
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+
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+SUCH DAMAGES.
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+ 17. Interpretation of Sections 15 and 16.
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+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
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+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+
+ Copyright (C)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+ Copyright (C)
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+.
diff --git a/vendor/github.com/OpenPeeDeeP/depguard/README.md b/vendor/github.com/OpenPeeDeeP/depguard/README.md
new file mode 100644
index 00000000..5cf22a29
--- /dev/null
+++ b/vendor/github.com/OpenPeeDeeP/depguard/README.md
@@ -0,0 +1,71 @@
+# Depguard
+
+Go linter that checks package imports are in a list of acceptable packages. It
+supports a white list and black list option and only checks the prefixes of the
+import path. This allows you to allow imports from a whole organization or only
+allow specific packages within a repository.
+
+## Install
+
+```bash
+go get -u github.com/OpenPeeDeeP/depguard
+```
+
+## Config
+
+By default, Depguard looks for a file named `.depguard.json` in the current
+current working directory. If it is somewhere else, pass in the `-c` flag with
+the location of your configuration file.
+
+The following is an example configuration file.
+
+```json
+{
+ "type": "whitelist",
+ "packages": [
+ "github.com/OpenPeeDeeP/depguard"
+ ],
+ "includeGoRoot": true
+}
+```
+
+- `type` can be either `whitelist` or `blacklist`. This check is case insensitive.
+If not specified the default is `blacklist`.
+- `packages` is a list of packages for the list type specified.
+- Set `includeGoRoot` to true if you want to check the list against standard lib.
+If not specified the default is false.
+
+## Gometalinter
+
+The binary installation of this linter can be used with
+[Gometalinter](github.com/alecthomas/gometalinter).
+
+If you use a configuration file for Gometalinter then the following will need to
+be added to your configuration file.
+
+```json
+{
+ "linters": {
+ "depguard": {
+ "command": "depguard -c path/to/config.json",
+ "pattern": "PATH:LINE:COL:MESSAGE",
+ "installFrom": "github.com/OpenPeeDeeP/depguard",
+ "isFast": true,
+ "partitionStrategy": "packages"
+ }
+ }
+}
+```
+
+If you prefer the command line way the following will work for you as well.
+
+```bash
+gometalinter --linter='depguard:depguard -c path/to/config.json:PATH:LINE:COL:MESSAGE'
+```
+
+## Golangci-lint
+
+This linter was built with
+[Golangci-lint](https://github.com/golangci/golangci-lint) in mind. I have opened
+up a [Pull Request](github.com/golangci/golangci-lint/pull/47) into GolangCI-Lint
+and will hopefully get that merged in soon.
diff --git a/vendor/github.com/OpenPeeDeeP/depguard/depguard.go b/vendor/github.com/OpenPeeDeeP/depguard/depguard.go
new file mode 100644
index 00000000..5e6464e9
--- /dev/null
+++ b/vendor/github.com/OpenPeeDeeP/depguard/depguard.go
@@ -0,0 +1,154 @@
+package depguard
+
+import (
+ "go/build"
+ "go/token"
+ "os"
+ "sort"
+ "strings"
+
+ "golang.org/x/tools/go/loader"
+)
+
+//ListType states what kind of list is passed in.
+type ListType int
+
+const (
+ //LTBlacklist states the list given is a blacklist. (default)
+ LTBlacklist ListType = iota
+ //LTWhitelist states the list given is a whitelist.
+ LTWhitelist
+)
+
+//StringToListType makes it easier to turn a string into a ListType.
+//It assumes that the string representation is lower case.
+var StringToListType = map[string]ListType{
+ "whitelist": LTWhitelist,
+ "blacklist": LTBlacklist,
+}
+
+//Issue with the package with PackageName at the Position.
+type Issue struct {
+ PackageName string
+ Position token.Position
+}
+
+//Depguard checks imports to make sure they follow the given list and constraints.
+type Depguard struct {
+ ListType ListType
+ Packages []string
+ IncludeGoRoot bool
+ buildCtx *build.Context
+ cwd string
+}
+
+//Run checks for dependencies given the program and validates them against
+//Packages.
+func (dg *Depguard) Run(config *loader.Config, prog *loader.Program) ([]*Issue, error) {
+ //Shortcut execution on an empty blacklist as that means every package is allowed
+ if dg.ListType == LTBlacklist && len(dg.Packages) == 0 {
+ return nil, nil
+ }
+
+ if err := dg.initialize(config, prog); err != nil {
+ return nil, err
+ }
+
+ directImports, err := dg.createImportMap(prog)
+ if err != nil {
+ return nil, err
+ }
+ var issues []*Issue
+ for pkg, positions := range directImports {
+ if dg.flagIt(pkg) {
+ for _, pos := range positions {
+ issues = append(issues, &Issue{
+ PackageName: pkg,
+ Position: pos,
+ })
+ }
+ }
+ }
+ return issues, nil
+}
+
+func (dg *Depguard) initialize(config *loader.Config, prog *loader.Program) error {
+ //Try and get the current working directory
+ dg.cwd = config.Cwd
+ if dg.cwd == "" {
+ var err error
+ dg.cwd, err = os.Getwd()
+ if err != nil {
+ return err
+ }
+ }
+
+ //Use the &build.Default if one is not specified
+ dg.buildCtx = config.Build
+ if dg.buildCtx == nil {
+ dg.buildCtx = &build.Default
+ }
+
+ //Sort the packages so we can have a faster search in the array
+ sort.Strings(dg.Packages)
+ return nil
+}
+
+func (dg *Depguard) createImportMap(prog *loader.Program) (map[string][]token.Position, error) {
+ importMap := make(map[string][]token.Position)
+ //For the directly imported packages
+ for _, imported := range prog.InitialPackages() {
+ //Go through their files
+ for _, file := range imported.Files {
+ //And populate a map of all direct imports and their positions
+ //This will filter out GoRoot depending on the Depguard.IncludeGoRoot
+ for _, fileImport := range file.Imports {
+ fileImportPath := cleanBasicLitString(fileImport.Path.Value)
+ if !dg.IncludeGoRoot {
+ pkg, err := dg.buildCtx.Import(fileImportPath, dg.cwd, 0)
+ if err != nil {
+ return nil, err
+ }
+ if pkg.Goroot {
+ continue
+ }
+ }
+ position := prog.Fset.Position(fileImport.Pos())
+ positions, found := importMap[fileImportPath]
+ if !found {
+ importMap[fileImportPath] = []token.Position{
+ position,
+ }
+ continue
+ }
+ importMap[fileImportPath] = append(positions, position)
+ }
+ }
+ }
+ return importMap, nil
+}
+
+func (dg *Depguard) pkgInList(pkg string) bool {
+ //Idx represents where in the package slice the passed in package would go
+ //when sorted. -1 Just means that it would be at the very front of the slice.
+ idx := sort.Search(len(dg.Packages), func(i int) bool {
+ return dg.Packages[i] > pkg
+ }) - 1
+ //This means that the package passed in has no way to be prefixed by anything
+ //in the package list as it is already smaller then everything
+ if idx == -1 {
+ return false
+ }
+ return strings.HasPrefix(pkg, dg.Packages[idx])
+}
+
+//InList | WhiteList | BlackList
+// y | | x
+// n | x |
+func (dg *Depguard) flagIt(pkg string) bool {
+ return dg.pkgInList(pkg) == (dg.ListType == LTBlacklist)
+}
+
+func cleanBasicLitString(value string) string {
+ return strings.Trim(value, "\"\\")
+}