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|
package main
import (
"errors"
"sort"
"strings"
)
type tagFilter struct {
emit []string
skip []string
}
func newTagFilter(tags string) (tagFilter, error) {
if tags == "" {
return tagFilter{}, nil
}
skipFilter := tags[0] == '-'
if skipFilter {
tags = tags[1:]
}
tt := strings.Split(tags, ",")
if err := checkTags(tt); err != nil {
return tagFilter{}, err
}
if skipFilter {
return tagFilter{skip: tt}, nil
}
return tagFilter{emit: tt}, nil
}
func (tf tagFilter) shouldEmit(tag string) bool {
emitMode := len(tf.emit) > 0
skipMode := len(tf.skip) > 0
switch {
case !emitMode && !skipMode:
return true
case emitMode:
return stringSliceContains(tf.emit, tag)
case skipMode:
return !stringSliceContains(tf.skip, tag)
}
return false // will never get here
}
func checkTags(tags []string) error {
if len(tags) == 0 {
return nil
}
var invalid []string
for _, t := range tags {
if t == "" {
continue
}
if !validTags[t] {
invalid = append(invalid, t)
}
}
if len(invalid) > 0 {
return errors.New(strings.Join(invalid, ", "))
}
return nil
}
func knownTags() []string {
var tags []string
for t := range validTags {
tags = append(tags, t)
}
sort.StringSlice(tags).Sort()
return tags
}
var (
validTags = map[string]bool{
BROKEN_SYMLINK_TAG: true,
MISSING_ALTERNATIVE_TAG: true,
MISSING_COPYRIGHT_FILE_TAG: true,
MISSING_PKGCONF_DEPENDENCY_TAG: true,
NAME_COLLISION_TAG: true,
OBSOLETE_CONFFILE_TAG: true,
// binfmt
BROKEN_BINFMT_DETECTOR_TAG: true,
BROKEN_BINFMT_INTERPRETER_TAG: true,
// python
PYFILE_NOT_BYTECOMPILED_TAG: true,
PYSHARED_FILE_NOT_BYTECOMPILED_TAG: true,
// elf
BIN_OR_SBIN_BINARY_REQUIRES_USR_LIB_LIBRARY_TAG: true,
INCOMPATIBLE_LICENSES_TAG: true,
LDD_FAILURE_TAG: true,
LIBRARY_NOT_FOUND_TAG: true,
MISSING_SYMBOL_VERSION_INFORMATION_TAG: true,
SYMBOL_SIZE_MISMATCH_TAG: true,
UNDEFINED_SYMBOL_TAG: true,
// system ids
INVALID_SYSTEMD_USER_GROUP_TAG: true,
INVALID_DBUS_USER_GROUP_TAG: true,
INVALID_SYSV_INIT_USER_GROUP_TAG: true,
}
)
|
