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parse.go
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parse.go
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package mix
import (
"bufio"
"strings"
"unicode"
"github.com/aquasecurity/trivy/pkg/dependency"
"github.com/aquasecurity/trivy/pkg/dependency/parser/utils"
ftypes "github.com/aquasecurity/trivy/pkg/fanal/types"
"github.com/aquasecurity/trivy/pkg/log"
xio "github.com/aquasecurity/trivy/pkg/x/io"
)
// Parser is a parser for mix.lock
type Parser struct {
logger *log.Logger
}
func NewParser() *Parser {
return &Parser{
logger: log.WithPrefix("mix"),
}
}
func (p *Parser) Parse(r xio.ReadSeekerAt) ([]ftypes.Package, []ftypes.Dependency, error) {
var pkgs []ftypes.Package
scanner := bufio.NewScanner(r)
var lineNumber int // It is used to save dependency location
for scanner.Scan() {
lineNumber++
line := strings.TrimSpace(scanner.Text())
name, body, ok := strings.Cut(line, ":")
if !ok {
// skip 1st and last lines
continue
}
name = strings.Trim(name, `"`)
// dependency format:
// "<depName>": {<:hex|:git>, :<depName>, "<depVersion>", "<checksum>", [:mix], [<required deps>], hexpm", "<checksum>"},
ss := strings.FieldsFunc(body, func(r rune) bool {
return unicode.IsSpace(r) || r == ','
})
if len(ss) < 8 { // In the case where <required deps> array is empty: s == 8, in other cases s > 8
// git repository doesn't have dependency version
// skip these dependencies
if !strings.Contains(ss[0], ":git") {
p.logger.Warn("Cannot parse dependency", log.String("line", line))
} else {
p.logger.Debug("Skip git dependencies", log.String("name", name))
}
continue
}
version := strings.Trim(ss[2], `"`)
pkgs = append(pkgs, ftypes.Package{
ID: dependency.ID(ftypes.Hex, name, version),
Name: name,
Version: version,
Locations: []ftypes.Location{
{
StartLine: lineNumber,
EndLine: lineNumber,
},
},
})
}
return utils.UniquePackages(pkgs), nil, nil
}