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Fixes #212 by increasing buffer size for scanner

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Signed-off-by: Jason Williams <jasonw@jhu.edu>
This commit is contained in:
Jason Williams 2020-10-13 11:00:55 -04:00
parent 8d25d44ea9
commit 1f64b3cd49
1 changed files with 5 additions and 0 deletions
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5
syft/cataloger/apkdb/parse_apk_db.go
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@ -20,9 +20,14 @@ var _ common.ParserFn = parseApkDB
// parseApkDb parses individual packages from a given Alpine DB file. For more information on specific fields // parseApkDb parses individual packages from a given Alpine DB file. For more information on specific fields
// see https://wiki.alpinelinux.org/wiki/Apk_spec . // see https://wiki.alpinelinux.org/wiki/Apk_spec .
func parseApkDB(_ string, reader io.Reader) ([]pkg.Package, error) { func parseApkDB(_ string, reader io.Reader) ([]pkg.Package, error) {
// larger capacity for the scanner.
const maxScannerCapacity = 1024 * 1024
// a new larger buffer for the scanner
bufScan := make([]byte, maxScannerCapacity)
packages := make([]pkg.Package, 0) packages := make([]pkg.Package, 0)
scanner := bufio.NewScanner(reader) scanner := bufio.NewScanner(reader)
scanner.Buffer(bufScan, maxScannerCapacity)
onDoubleLF := func(data []byte, atEOF bool) (advance int, token []byte, err error) { onDoubleLF := func(data []byte, atEOF bool) (advance int, token []byte, err error) {
for i := 0; i < len(data); i++ { for i := 0; i < len(data); i++ {
if i > 0 && data[i-1] == '\n' && data[i] == '\n' { if i > 0 && data[i-1] == '\n' && data[i] == '\n' {