all: formatting (#93)

Enforce stricter formatting and import grouping with gofumports.

script/bootstrap

@@ -20,3 +20,6 @@ go get -u github.com/dlespiau/covertool
 
 # asmfmt for enforcing assembly style
 go get -u github.com/klauspost/asmfmt/cmd/asmfmt
+
+# gofumports for stricter formatting
+go get -u mvdan.cc/gofumpt/gofumports

script/fmt

@@ -0,0 +1,15 @@
+#!/bin/bash -ex
+
+repo="github.com/mmcloughlin/avo"
+
+# Files to apply formatting to. Exclude stadtx since some of it was imported
+# from the original repo.
+files=$(find . -name '*.go' -not -path '*/stadtx/*')
+
+# Remove blank lines in import blocks. This will force formatting to group
+# imports correctly.
+sed -i.fmtbackup '/^import (/,/)/ { /^$$/ d; }' ${files}
+find . -name '*.fmtbackup' -delete
+
+# gofumports is goimports with stricter formatting.
+gofumports -w -local ${repo} ${files}

script/lint

@@ -4,6 +4,10 @@
 ./script/generate
 test -z "$(git status --porcelain)"
 
+# Still clean after formatting.
+./script/fmt
+test -z "$(git status --porcelain)"
+
 # And it's still clean after asmfmt.
 # Note: we want to confirm we agree with asmfmt without actually depending on it.
 find . -name '*.s' | xargs asmfmt -w