1 files changed, 84 insertions, 0 deletions
diff --git a/vendor/github.com/mgechev/revive/rule/line-length-limit.go b/vendor/github.com/mgechev/revive/rule/line-length-limit.go
new file mode 100644
index 0000000000..5ee057079f
--- /dev/null
+++ b/vendor/github.com/mgechev/revive/rule/line-length-limit.go
@@ -0,0 +1,84 @@
+package rule
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"go/token"
+	"strings"
+	"unicode/utf8"
+
+	"github.com/mgechev/revive/lint"
+)
+
+// LineLengthLimitRule lints given else constructs.
+type LineLengthLimitRule struct{}
+
+// Apply applies the rule to given file.
+func (r *LineLengthLimitRule) Apply(file *lint.File, arguments lint.Arguments) []lint.Failure {
+	if len(arguments) != 1 {
+		panic(`invalid configuration for "line-length-limit"`)
+	}
+
+	max, ok := arguments[0].(int64) // Alt. non panicking version
+	if !ok || max < 0 {
+		panic(`invalid value passed as argument number to the "line-length-limit" rule`)
+	}
+
+	var failures []lint.Failure
+	checker := lintLineLengthNum{
+		max:  int(max),
+		file: file,
+		onFailure: func(failure lint.Failure) {
+			failures = append(failures, failure)
+		},
+	}
+
+	checker.check()
+
+	return failures
+}
+
+// Name returns the rule name.
+func (r *LineLengthLimitRule) Name() string {
+	return "line-length-limit"
+}
+
+type lintLineLengthNum struct {
+	max       int
+	file      *lint.File
+	onFailure func(lint.Failure)
+}
+
+func (r lintLineLengthNum) check() {
+	f := bytes.NewReader(r.file.Content())
+	spaces := strings.Repeat(" ", 4) // tab width = 4
+	l := 1
+	s := bufio.NewScanner(f)
+	for s.Scan() {
+		t := s.Text()
+		t = strings.Replace(t, "\t", spaces, -1)
+		c := utf8.RuneCountInString(t)
+		if c > r.max {
+			r.onFailure(lint.Failure{
+				Category: "code-style",
+				Position: lint.FailurePosition{
+					// Offset not set; it is non-trivial, and doesn't appear to be needed.
+					Start: token.Position{
+						Filename: r.file.Name,
+						Line:     l,
+						Column:   0,
+					},
+					End: token.Position{
+						Filename: r.file.Name,
+						Line:     l,
+						Column:   c,
+					},
+				},
+				Confidence: 1,
+				Failure:    fmt.Sprintf("line is %d characters, out of limit %d", c, r.max),
+			})
+		}
+		l++
+	}
+}