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e31c80b82c
This CL got away from me a little. For a number of reasons, the existing goimports API of passing in values for various GO* values was not working. For one, the number of necessary variables kept growing. For another, we tried to avoid calling `go env` in GOPATH mode by using `build.Default`, but that turns out to be buggy; see golang/go#39838. And finally, it created massive confusion about whether the values were intended to be read from the OS environment, or fully evaluated by the `go` command. There are only two users of the internal imports API, so there really shouldn't need to be more than two modes. For the command line tool, we have to call `go env` to deal with the `go/build` bug. So we just do it. Tests use that same path, but can augment the enviroment to set themselves up. In contrast, `gopls` needs to fully specify the environment. It can simply pass in the fully evaluated GO* values. Finally, make the change I was actually here to make: propagate GOMODCACHE and use it where appropriate. Fixes golang/go#39761. Change-Id: I720c69839d91d66d98e94dfc5f065ba0279c5542 Reviewed-on: https://go-review.googlesource.com/c/tools/+/239754 Run-TryBot: Heschi Kreinick <heschi@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Rebecca Stambler <rstambler@golang.org>
63 lines
2.0 KiB
Go
63 lines
2.0 KiB
Go
// Package imports implements a Go pretty-printer (like package "go/format")
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// that also adds or removes import statements as necessary.
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package imports // import "golang.org/x/tools/imports"
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import (
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"log"
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intimp "golang.org/x/tools/internal/imports"
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)
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// Options specifies options for processing files.
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type Options struct {
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Fragment bool // Accept fragment of a source file (no package statement)
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AllErrors bool // Report all errors (not just the first 10 on different lines)
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Comments bool // Print comments (true if nil *Options provided)
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TabIndent bool // Use tabs for indent (true if nil *Options provided)
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TabWidth int // Tab width (8 if nil *Options provided)
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FormatOnly bool // Disable the insertion and deletion of imports
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}
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// Debug controls verbose logging.
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var Debug = false
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// LocalPrefix is a comma-separated string of import path prefixes, which, if
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// set, instructs Process to sort the import paths with the given prefixes
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// into another group after 3rd-party packages.
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var LocalPrefix string
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// Process formats and adjusts imports for the provided file.
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// If opt is nil the defaults are used.
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//
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// Note that filename's directory influences which imports can be chosen,
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// so it is important that filename be accurate.
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// To process data ``as if'' it were in filename, pass the data as a non-nil src.
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func Process(filename string, src []byte, opt *Options) ([]byte, error) {
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if opt == nil {
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opt = &Options{Comments: true, TabIndent: true, TabWidth: 8}
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}
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intopt := &intimp.Options{
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Env: &intimp.ProcessEnv{
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LocalPrefix: LocalPrefix,
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},
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AllErrors: opt.AllErrors,
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Comments: opt.Comments,
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FormatOnly: opt.FormatOnly,
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Fragment: opt.Fragment,
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TabIndent: opt.TabIndent,
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TabWidth: opt.TabWidth,
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}
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if Debug {
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intopt.Env.Logf = log.Printf
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}
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return intimp.Process(filename, src, intopt)
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}
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// VendorlessPath returns the devendorized version of the import path ipath.
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// For example, VendorlessPath("foo/bar/vendor/a/b") returns "a/b".
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func VendorlessPath(ipath string) string {
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return intimp.VendorlessPath(ipath)
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}
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