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package writer
import (
"encoding/xml"
"fmt"
"io"
"sort"
"sync"
"github.com/haya14busa/go-checkstyle/checkstyle"
"github.com/reviewdog/errorformat"
)
// CheckStyle represents checkstyle XML writer. http://checkstyle.sourceforge.net/
type CheckStyle struct {
mu sync.Mutex
files map[string]*checkstyle.File
w io.Writer
}
func NewCheckStyle(w io.Writer) *CheckStyle {
return &CheckStyle{w: w}
}
func (c *CheckStyle) Write(e *errorformat.Entry) error {
c.mu.Lock()
defer c.mu.Unlock()
if c.files == nil {
c.files = make(map[string]*checkstyle.File)
}
if _, ok := c.files[e.Filename]; !ok {
c.files[e.Filename] = &checkstyle.File{Name: e.Filename}
}
checkerr := &checkstyle.Error{
Column: e.Col,
Line: e.Lnum,
Message: e.Text,
Severity: e.Types(),
}
if e.Nr != 0 && e.Type != 0 {
checkerr.Source = fmt.Sprintf("%s%d", string(e.Type), e.Nr)
}
c.files[e.Filename].Errors = append(c.files[e.Filename].Errors, checkerr)
return nil
}
func (c *CheckStyle) Flush() error {
c.mu.Lock()
defer c.mu.Unlock()
r := &checkstyle.Result{Version: "1.0"}
for _, f := range c.files {
sort.Slice(f.Errors, func(i, j int) bool {
x, y := f.Errors[i], f.Errors[j]
if x.Line == y.Line {
return x.Column < y.Column
}
return x.Line < y.Line
})
r.Files = append(r.Files, f)
}
sort.Slice(r.Files, func(i, j int) bool {
return r.Files[i].Name < r.Files[j].Name
})
fmt.Fprint(c.w, xml.Header)
e := xml.NewEncoder(c.w)
e.Indent("", " ")
defer c.w.Write(nl)
return e.Encode(r)
}
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