add possibility to ignore custom user's import grouping

Author: kamilsk

cmd/goimports/goimports.go

@@ -48,6 +48,7 @@ var (
 func init() {
 	flag.BoolVar(&options.AllErrors, "e", false, "report all errors (not just the first 10 on different lines)")
 	flag.StringVar(&imports.LocalPrefix, "local", "", "put imports beginning with this string after 3rd-party packages; comma-separated list")
+	flag.BoolVar(&options.IgnoreGrouping, "ungroup", false, "ignore user's custom import grouping")
 }
 
 func report(err error) {

imports/imports.go

@@ -36,6 +36,8 @@ type Options struct {
 	TabWidth  int  // Tab width (8 if nil *Options provided)
 
 	FormatOnly bool // Disable the insertion and deletion of imports
+
+	IgnoreGrouping bool // Ignore user's custom import grouping
 }
 
 // Process formats and adjusts imports for the provided file.
@@ -68,7 +70,7 @@ func Process(filename string, src []byte, opt *Options) ([]byte, error) {
 		}
 	}
 
-	sortImports(fileSet, file)
+	sortImports(fileSet, file, opt.IgnoreGrouping)
 	imps := astutil.Imports(fileSet, file)
 	var spacesBefore []string // import paths we need spaces before
 	for _, impSection := range imps {
@@ -85,7 +87,6 @@ func Process(filename string, src []byte, opt *Options) ([]byte, error) {
 			}
 			lastGroup = groupNum
 		}
-
 	}
 
 	printerMode := printer.UseSpaces

imports/sortimports.go

@@ -15,7 +15,7 @@ import (
 
 // sortImports sorts runs of consecutive import lines in import blocks in f.
 // It also removes duplicate imports when it is possible to do so without data loss.
-func sortImports(fset *token.FileSet, f *ast.File) {
+func sortImports(fset *token.FileSet, f *ast.File, ignoreGroups bool) {
 	for i, d := range f.Decls {
 		d, ok := d.(*ast.GenDecl)
 		if !ok || d.Tok != token.IMPORT {
@@ -37,11 +37,13 @@ func sortImports(fset *token.FileSet, f *ast.File) {
 		// Identify and sort runs of specs on successive lines.
 		i := 0
 		specs := d.Specs[:0]
-		for j, s := range d.Specs {
-			if j > i && fset.Position(s.Pos()).Line > 1+fset.Position(d.Specs[j-1].End()).Line {
-				// j begins a new run.  End this one.
-				specs = append(specs, sortSpecs(fset, f, d.Specs[i:j])...)
-				i = j
+		if !ignoreGroups {
+			for j, s := range d.Specs {
+				if j > i && fset.Position(s.Pos()).Line > 1+fset.Position(d.Specs[j-1].End()).Line {
+					// j begins a new run.  End this one.
+					specs = append(specs, sortSpecs(fset, f, d.Specs[i:j])...)
+					i = j
+				}
 			}
 		}
 		specs = append(specs, sortSpecs(fset, f, d.Specs[i:])...)