Isaev Denis 95ec0cf21e
dramatically reduce memory usage ()
Run all linters per package. It allows unloading package data when it's
processed. It dramatically reduces memory (and CPU because of GC) usage.

Relates: 
2019-09-30 16:19:41 +03:00

92 lines
2.0 KiB
Go

package printers
import (
"context"
"fmt"
"github.com/fatih/color"
"github.com/golangci/golangci-lint/pkg/logutils"
"github.com/golangci/golangci-lint/pkg/result"
)
type Text struct {
printIssuedLine bool
useColors bool
printLinterName bool
log logutils.Log
}
func NewText(printIssuedLine, useColors, printLinterName bool, log logutils.Log) *Text {
return &Text{
printIssuedLine: printIssuedLine,
useColors: useColors,
printLinterName: printLinterName,
log: log,
}
}
func (p Text) SprintfColored(ca color.Attribute, format string, args ...interface{}) string {
if !p.useColors {
return fmt.Sprintf(format, args...)
}
c := color.New(ca)
return c.Sprintf(format, args...)
}
func (p *Text) Print(ctx context.Context, issues []result.Issue) error {
for _, i := range issues {
i := i
p.printIssue(&i)
if !p.printIssuedLine {
continue
}
p.printSourceCode(&i)
p.printUnderLinePointer(&i)
}
return nil
}
func (p Text) printIssue(i *result.Issue) {
text := p.SprintfColored(color.FgRed, "%s", i.Text)
if p.printLinterName {
text += fmt.Sprintf(" (%s)", i.FromLinter)
}
pos := p.SprintfColored(color.Bold, "%s:%d", i.FilePath(), i.Line())
if i.Pos.Column != 0 {
pos += fmt.Sprintf(":%d", i.Pos.Column)
}
fmt.Fprintf(logutils.StdOut, "%s: %s\n", pos, text)
}
func (p Text) printSourceCode(i *result.Issue) {
for _, line := range i.SourceLines {
fmt.Fprintln(logutils.StdOut, line)
}
}
func (p Text) printUnderLinePointer(i *result.Issue) {
// if column == 0 it means column is unknown (e.g. for gosec)
if len(i.SourceLines) != 1 || i.Pos.Column == 0 {
return
}
col0 := i.Pos.Column - 1
line := i.SourceLines[0]
prefixRunes := make([]rune, 0, len(line))
for j := 0; j < len(line) && j < col0; j++ {
if line[j] == '\t' {
prefixRunes = append(prefixRunes, '\t')
} else {
prefixRunes = append(prefixRunes, ' ')
}
}
fmt.Fprintf(logutils.StdOut, "%s%s\n", string(prefixRunes), p.SprintfColored(color.FgYellow, "^"))
}