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code.go
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code.go
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package scan
import (
"fmt"
"io/fs"
"path/filepath"
"strings"
)
type Code struct {
Lines []Line
}
type Line struct {
Number int
Content string
IsCause bool
Annotation string
Truncated bool
Highlighted string
FirstCause bool
LastCause bool
}
func (c *Code) IsCauseMultiline() bool {
var count int
for _, line := range c.Lines {
if line.IsCause {
count++
if count > 1 {
return true
}
}
}
return false
}
// nolint
func (r *Result) GetCode() (*Code, error) {
srcFS := r.Metadata().Range().GetFS()
if srcFS == nil {
return nil, fmt.Errorf("code unavailable: result was not mapped to a known filesystem")
}
innerRange := r.Range()
outerRange := innerRange
metadata := r.Metadata()
for {
if parent := metadata.Parent(); parent != nil && parent.Range().GetFilename() == metadata.Range().GetFilename() {
outerRange = parent.Range()
metadata = *parent
continue
}
break
}
slashed := filepath.ToSlash(r.fsPath)
slashed = strings.TrimPrefix(slashed, "/")
content, err := fs.ReadFile(srcFS, slashed)
if err != nil {
return nil, fmt.Errorf("failed to read file from result filesystem (%#v): %w", srcFS, err)
}
hasAnnotation := r.Annotation() != ""
code := Code{
Lines: nil,
}
rawLines := strings.Split(string(content), "\n")
highlighted := highlight(innerRange.GetLocalFilename(), content)
highlightedLines := strings.Split(string(highlighted), "\n")
if len(highlightedLines) < len(rawLines) {
highlightedLines = rawLines
}
if outerRange.GetEndLine()-1 >= len(rawLines) || innerRange.GetStartLine() == 0 {
return nil, fmt.Errorf("invalid line number")
}
shrink := outerRange.LineCount() > (innerRange.LineCount() + 10)
if shrink {
if outerRange.GetStartLine() < innerRange.GetStartLine() {
code.Lines = append(
code.Lines,
Line{
Content: rawLines[outerRange.GetStartLine()-1],
Highlighted: highlightedLines[outerRange.GetStartLine()-1],
Number: outerRange.GetStartLine(),
},
)
if outerRange.GetStartLine()+1 < innerRange.GetStartLine() {
code.Lines = append(
code.Lines,
Line{
Truncated: true,
Number: outerRange.GetStartLine() + 1,
},
)
}
}
for lineNo := innerRange.GetStartLine(); lineNo <= innerRange.GetEndLine(); lineNo++ {
line := Line{
Number: lineNo,
Content: strings.TrimSuffix(rawLines[lineNo-1], "\r"),
Highlighted: strings.TrimSuffix(highlightedLines[lineNo-1], "\r"),
IsCause: true,
}
if hasAnnotation && lineNo == innerRange.GetStartLine() {
line.Annotation = r.Annotation()
}
code.Lines = append(code.Lines, line)
}
if outerRange.GetEndLine() > innerRange.GetEndLine() {
if outerRange.GetEndLine() > innerRange.GetEndLine()+1 {
code.Lines = append(
code.Lines,
Line{
Truncated: true,
Number: outerRange.GetEndLine() - 1,
},
)
}
code.Lines = append(
code.Lines,
Line{
Content: rawLines[outerRange.GetEndLine()-1],
Highlighted: highlightedLines[outerRange.GetEndLine()-1],
Number: outerRange.GetEndLine(),
},
)
}
} else {
for lineNo := outerRange.GetStartLine(); lineNo <= outerRange.GetEndLine(); lineNo++ {
line := Line{
Number: lineNo,
Content: strings.TrimSuffix(rawLines[lineNo-1], "\r"),
Highlighted: strings.TrimSuffix(highlightedLines[lineNo-1], "\r"),
IsCause: lineNo >= innerRange.GetStartLine() && lineNo <= innerRange.GetEndLine(),
}
if hasAnnotation && lineNo == innerRange.GetStartLine() {
line.Annotation = r.Annotation()
}
code.Lines = append(code.Lines, line)
}
}
return &code, nil
}