Merge pull request #167 from cosmincojocar/sort_by_severity

Sort the issues by severity in descending order

.travis.yml

@@ -2,7 +2,9 @@ language: go
 before_script:
   - go vet $(go list ./... | grep -v /vendor/)
 go:
-  - 1.5
+  - 1.7
+  - 1.8
+  - 1.9
   - tip
 install:
   - go get -v github.com/onsi/ginkgo/ginkgo

cmd/gas/main.go

@@ -79,6 +79,9 @@ var (
 	// log to file or stderr
 	flagLogfile = flag.String("log", "", "Log messages to file rather than stderr")
 
+	// sort the issues by severity
+	flagSortIssues = flag.Bool("sort", true, "Sort issues by severity")
+
 	logger *log.Logger
 )
 
@@ -231,6 +234,11 @@ func main() {
 		os.Exit(0)
 	}
 
+	// Sort the issue by severity
+	if *flagSortIssues {
+		sortIssues(issues)
+	}
+
 	// Create output report
 	if err := saveOutput(*flagOutput, *flagFormat, issues, metrics); err != nil {
 		logger.Fatal(err)

cmd/gas/sort_issues.go

@@ -0,0 +1,20 @@
+package main
+
+import (
+	"sort"
+
+	"github.com/GoASTScanner/gas"
+)
+
+type sortBySeverity []*gas.Issue
+
+func (s sortBySeverity) Len() int { return len(s) }
+
+func (s sortBySeverity) Less(i, j int) bool { return s[i].Severity > s[i].Severity }
+
+func (s sortBySeverity) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
+
+// sortIssues sorts the issues by severity in descending order
+func sortIssues(issues []*gas.Issue) {
+	sort.Sort(sortBySeverity(issues))
+}