delete unused types.Version
This commit is contained in:
Jimmy Zelinskie
parent
03bac0f1b6
commit
8dea744236
@ -1,296 +0,0 @@
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// Copyright 2015 clair authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package types
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import (
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"database/sql/driver"
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"encoding/json"
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"errors"
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"strconv"
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"strings"
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"unicode"
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)
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// Version represents a package version
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type Version struct {
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epoch int
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version string
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revision string
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}
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var (
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// MinVersion is a special package version which is always sorted first
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MinVersion = Version{version: "#MINV#"}
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// MaxVersion is a special package version which is always sorted last
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MaxVersion = Version{version: "#MAXV#"}
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versionAllowedSymbols = []rune{'.', '-', '+', '~', ':', '_'}
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revisionAllowedSymbols = []rune{'.', '+', '~', '_'}
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)
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// NewVersion function parses a string into a Version struct which can be compared
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//
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// The implementation is based on http://man.he.net/man5/deb-version
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// on https://www.debian.org/doc/debian-policy/ch-controlfields.html#s-f-Version
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//
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// It uses the dpkg-1.17.25's algorithm (lib/parsehelp.c)
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func NewVersion(str string) (Version, error) {
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var version Version
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// Trim leading and trailing space
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str = strings.TrimSpace(str)
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if len(str) == 0 {
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return Version{}, errors.New("Version string is empty")
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}
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// Max/Min versions
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if str == MaxVersion.String() {
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return MaxVersion, nil
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}
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if str == MinVersion.String() {
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return MinVersion, nil
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}
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// Find epoch
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sepepoch := strings.Index(str, ":")
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if sepepoch > -1 {
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intepoch, err := strconv.Atoi(str[:sepepoch])
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if err == nil {
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version.epoch = intepoch
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} else {
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return Version{}, errors.New("epoch in version is not a number")
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}
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if intepoch < 0 {
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return Version{}, errors.New("epoch in version is negative")
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}
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} else {
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version.epoch = 0
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}
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// Find version / revision
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seprevision := strings.LastIndex(str, "-")
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if seprevision > -1 {
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version.version = str[sepepoch+1 : seprevision]
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version.revision = str[seprevision+1:]
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} else {
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version.version = str[sepepoch+1:]
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version.revision = ""
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}
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// Verify format
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if len(version.version) == 0 {
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return Version{}, errors.New("No version")
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}
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if !unicode.IsDigit(rune(version.version[0])) {
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return Version{}, errors.New("version does not start with digit")
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}
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for i := 0; i < len(version.version); i = i + 1 {
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r := rune(version.version[i])
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if !unicode.IsDigit(r) && !unicode.IsLetter(r) && !containsRune(versionAllowedSymbols, r) {
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return Version{}, errors.New("invalid character in version")
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}
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}
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for i := 0; i < len(version.revision); i = i + 1 {
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r := rune(version.revision[i])
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if !unicode.IsDigit(r) && !unicode.IsLetter(r) && !containsRune(revisionAllowedSymbols, r) {
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return Version{}, errors.New("invalid character in revision")
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}
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}
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return version, nil
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}
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// NewVersionUnsafe is just a wrapper around NewVersion that ignore potentiel
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// parsing error. Useful for test purposes
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func NewVersionUnsafe(str string) Version {
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v, _ := NewVersion(str)
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return v
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}
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// Compare function compares two Debian-like package version
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//
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// The implementation is based on http://man.he.net/man5/deb-version
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// on https://www.debian.org/doc/debian-policy/ch-controlfields.html#s-f-Version
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//
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// It uses the dpkg-1.17.25's algorithm (lib/version.c)
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func (a Version) Compare(b Version) int {
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// Quick check
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if a == b {
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return 0
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}
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// Max/Min comparison
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if a == MinVersion || b == MaxVersion {
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return -1
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}
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if b == MinVersion || a == MaxVersion {
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return 1
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}
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// Compare epochs
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if a.epoch > b.epoch {
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return 1
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}
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if a.epoch < b.epoch {
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return -1
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}
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// Compare version
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rc := verrevcmp(a.version, b.version)
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if rc != 0 {
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return signum(rc)
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}
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// Compare revision
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return signum(verrevcmp(a.revision, b.revision))
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}
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// String returns the string representation of a Version
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func (v Version) String() (s string) {
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if v.epoch != 0 {
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s = strconv.Itoa(v.epoch) + ":"
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}
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s += v.version
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if v.revision != "" {
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s += "-" + v.revision
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}
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return
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}
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func (v Version) MarshalJSON() ([]byte, error) {
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return json.Marshal(v.String())
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}
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func (v *Version) UnmarshalJSON(b []byte) (err error) {
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var str string
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json.Unmarshal(b, &str)
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vp := NewVersionUnsafe(str)
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*v = vp
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return
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}
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func (v *Version) Scan(value interface{}) (err error) {
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val, ok := value.([]byte)
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if !ok {
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return errors.New("could not scan a Version from a non-string input")
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}
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*v, err = NewVersion(string(val))
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return
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}
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func (v *Version) Value() (driver.Value, error) {
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return v.String(), nil
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}
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func verrevcmp(t1, t2 string) int {
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t1, rt1 := nextRune(t1)
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t2, rt2 := nextRune(t2)
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for rt1 != nil || rt2 != nil {
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firstDiff := 0
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for (rt1 != nil && !unicode.IsDigit(*rt1)) || (rt2 != nil && !unicode.IsDigit(*rt2)) {
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ac := 0
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bc := 0
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if rt1 != nil {
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ac = order(*rt1)
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}
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if rt2 != nil {
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bc = order(*rt2)
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}
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if ac != bc {
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return ac - bc
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}
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t1, rt1 = nextRune(t1)
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t2, rt2 = nextRune(t2)
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}
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for rt1 != nil && *rt1 == '0' {
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t1, rt1 = nextRune(t1)
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}
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for rt2 != nil && *rt2 == '0' {
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t2, rt2 = nextRune(t2)
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}
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for rt1 != nil && unicode.IsDigit(*rt1) && rt2 != nil && unicode.IsDigit(*rt2) {
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if firstDiff == 0 {
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firstDiff = int(*rt1) - int(*rt2)
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}
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t1, rt1 = nextRune(t1)
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t2, rt2 = nextRune(t2)
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}
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if rt1 != nil && unicode.IsDigit(*rt1) {
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return 1
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}
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if rt2 != nil && unicode.IsDigit(*rt2) {
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return -1
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}
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if firstDiff != 0 {
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return firstDiff
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}
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}
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return 0
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}
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// order compares runes using a modified ASCII table
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// so that letters are sorted earlier than non-letters
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// and so that tildes sorts before anything
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func order(r rune) int {
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if unicode.IsDigit(r) {
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return 0
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}
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if unicode.IsLetter(r) {
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return int(r)
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}
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if r == '~' {
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return -1
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}
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return int(r) + 256
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}
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func nextRune(str string) (string, *rune) {
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if len(str) >= 1 {
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r := rune(str[0])
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return str[1:], &r
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}
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return str, nil
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}
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func containsRune(s []rune, e rune) bool {
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for _, a := range s {
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if a == e {
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return true
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}
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}
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return false
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}
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func signum(a int) int {
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switch {
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case a < 0:
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return -1
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case a > 0:
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return +1
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}
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return 0
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}
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@ -1,243 +0,0 @@
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// Copyright 2015 clair authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package types
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import (
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"strings"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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const (
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LESS = -1
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EQUAL = 0
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GREATER = 1
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)
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func TestCompareSimpleVersion(t *testing.T) {
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cases := []struct {
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v1 Version
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expected int
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v2 Version
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}{
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{Version{}, EQUAL, Version{}},
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{Version{epoch: 1}, LESS, Version{epoch: 2}},
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{Version{epoch: 0, version: "1", revision: "1"}, LESS, Version{epoch: 0, version: "2", revision: "1"}},
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{Version{epoch: 0, version: "a", revision: "0"}, LESS, Version{epoch: 0, version: "b", revision: "0"}},
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{Version{epoch: 0, version: "1", revision: "1"}, LESS, Version{epoch: 0, version: "1", revision: "2"}},
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{Version{epoch: 0, version: "0", revision: "0"}, EQUAL, Version{epoch: 0, version: "0", revision: "0"}},
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{Version{epoch: 0, version: "0", revision: "00"}, EQUAL, Version{epoch: 0, version: "00", revision: "0"}},
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{Version{epoch: 1, version: "2", revision: "3"}, EQUAL, Version{epoch: 1, version: "2", revision: "3"}},
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{Version{epoch: 0, version: "0", revision: "a"}, LESS, Version{epoch: 0, version: "0", revision: "b"}},
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{MinVersion, LESS, MaxVersion},
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{MinVersion, LESS, Version{}},
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{MinVersion, LESS, Version{version: "0"}},
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{MaxVersion, GREATER, Version{}},
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{MaxVersion, GREATER, Version{epoch: 9999999, version: "9999999", revision: "9999999"}},
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}
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for _, c := range cases {
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cmp := c.v1.Compare(c.v2)
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assert.Equal(t, c.expected, cmp, "%s vs. %s, = %d, expected %d", c.v1, c.v2, cmp, c.expected)
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cmp = c.v2.Compare(c.v1)
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assert.Equal(t, -c.expected, cmp, "%s vs. %s, = %d, expected %d", c.v2, c.v1, cmp, -c.expected)
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}
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}
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func TestParse(t *testing.T) {
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cases := []struct {
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str string
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ver Version
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err bool
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}{
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// Test 0
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{"0", Version{epoch: 0, version: "0", revision: ""}, false},
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{"0:0", Version{epoch: 0, version: "0", revision: ""}, false},
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{"0:0-", Version{epoch: 0, version: "0", revision: ""}, false},
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{"0:0-0", Version{epoch: 0, version: "0", revision: "0"}, false},
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{"0:0.0-0.0", Version{epoch: 0, version: "0.0", revision: "0.0"}, false},
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// Test epoched
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{"1:0", Version{epoch: 1, version: "0", revision: ""}, false},
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{"5:1", Version{epoch: 5, version: "1", revision: ""}, false},
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// Test multiple hypens
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{"0:0-0-0", Version{epoch: 0, version: "0-0", revision: "0"}, false},
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{"0:0-0-0-0", Version{epoch: 0, version: "0-0-0", revision: "0"}, false},
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// Test multiple colons
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{"0:0:0-0", Version{epoch: 0, version: "0:0", revision: "0"}, false},
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{"0:0:0:0-0", Version{epoch: 0, version: "0:0:0", revision: "0"}, false},
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// Test multiple hyphens and colons
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{"0:0:0-0-0", Version{epoch: 0, version: "0:0-0", revision: "0"}, false},
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{"0:0-0:0-0", Version{epoch: 0, version: "0-0:0", revision: "0"}, false},
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// Test valid characters in version
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{"0:09azAZ.-+~:_-0", Version{epoch: 0, version: "09azAZ.-+~:_", revision: "0"}, false},
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// Test valid characters in debian revision
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{"0:0-azAZ09.+~_", Version{epoch: 0, version: "0", revision: "azAZ09.+~_"}, false},
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// Test version with leading and trailing spaces
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{" 0:0-1", Version{epoch: 0, version: "0", revision: "1"}, false},
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{"0:0-1 ", Version{epoch: 0, version: "0", revision: "1"}, false},
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{" 0:0-1 ", Version{epoch: 0, version: "0", revision: "1"}, false},
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// Test empty version
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{"", Version{}, true},
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{" ", Version{}, true},
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{"0:", Version{}, true},
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// Test version with embedded spaces
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{"0:0 0-1", Version{}, true},
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// Test version with negative epoch
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{"-1:0-1", Version{}, true},
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// Test invalid characters in epoch
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{"a:0-0", Version{}, true},
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{"A:0-0", Version{}, true},
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// Test version not starting with a digit
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{"0:abc3-0", Version{}, true},
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}
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for _, c := range cases {
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v, err := NewVersion(c.str)
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if c.err {
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assert.Error(t, err, "When parsing '%s'", c.str)
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} else {
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assert.Nil(t, err, "When parsing '%s'", c.str)
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}
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assert.Equal(t, c.ver, v, "When parsing '%s'", c.str)
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}
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// Test invalid characters in version
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versym := []rune{'!', '#', '@', '$', '%', '&', '/', '|', '\\', '<', '>', '(', ')', '[', ']', '{', '}', ';', ',', '=', '*', '^', '\''}
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for _, r := range versym {
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_, err := NewVersion(strings.Join([]string{"0:0", string(r), "-0"}, ""))
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assert.Error(t, err, "Parsing with invalid character '%s' in version should have failed", string(r))
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}
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// Test invalid characters in revision
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versym = []rune{'!', '#', '@', '$', '%', '&', '/', '|', '\\', '<', '>', '(', ')', '[', ']', '{', '}', ':', ';', ',', '=', '*', '^', '\''}
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for _, r := range versym {
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_, err := NewVersion(strings.Join([]string{"0:0-", string(r)}, ""))
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assert.Error(t, err, "Parsing with invalid character '%s' in revision should have failed", string(r))
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}
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}
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func TestParseAndCompare(t *testing.T) {
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const LESS = -1
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const EQUAL = 0
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const GREATER = 1
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cases := []struct {
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v1 string
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expected int
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v2 string
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}{
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{"7.6p2-4", GREATER, "7.6-0"},
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{"1.0.3-3", GREATER, "1.0-1"},
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{"1.3", GREATER, "1.2.2-2"},
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{"1.3", GREATER, "1.2.2"},
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// Some properties of text strings
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{"0-pre", EQUAL, "0-pre"},
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{"0-pre", LESS, "0-pree"},
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{"1.1.6r2-2", GREATER, "1.1.6r-1"},
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{"2.6b2-1", GREATER, "2.6b-2"},
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{"98.1p5-1", LESS, "98.1-pre2-b6-2"},
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{"0.4a6-2", GREATER, "0.4-1"},
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{"1:3.0.5-2", LESS, "1:3.0.5.1"},
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// epochs
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{"1:0.4", GREATER, "10.3"},
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{"1:1.25-4", LESS, "1:1.25-8"},
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{"0:1.18.36", EQUAL, "1.18.36"},
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{"1.18.36", GREATER, "1.18.35"},
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{"0:1.18.36", GREATER, "1.18.35"},
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// Funky, but allowed, characters in upstream version
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{"9:1.18.36:5.4-20", LESS, "10:0.5.1-22"},
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{"9:1.18.36:5.4-20", LESS, "9:1.18.36:5.5-1"},
|
||||
{"9:1.18.36:5.4-20", LESS, " 9:1.18.37:4.3-22"},
|
||||
{"1.18.36-0.17.35-18", GREATER, "1.18.36-19"},
|
||||
// Junk
|
||||
{"1:1.2.13-3", LESS, "1:1.2.13-3.1"},
|
||||
{"2.0.7pre1-4", LESS, "2.0.7r-1"},
|
||||
// if a version includes a dash, it should be the debrev dash - policy says so
|
||||
{"0:0-0-0", GREATER, "0-0"},
|
||||
// do we like strange versions? Yes we like strange versions…
|
||||
{"0", EQUAL, "0"},
|
||||
{"0", EQUAL, "00"},
|
||||
// #205960
|
||||
{"3.0~rc1-1", LESS, "3.0-1"},
|
||||
// #573592 - debian policy 5.6.12
|
||||
{"1.0", EQUAL, "1.0-0"},
|
||||
{"0.2", LESS, "1.0-0"},
|
||||
{"1.0", LESS, "1.0-0+b1"},
|
||||
{"1.0", GREATER, "1.0-0~"},
|
||||
// "steal" the testcases from (old perl) cupt
|
||||
{"1.2.3", EQUAL, "1.2.3"}, // identical
|
||||
{"4.4.3-2", EQUAL, "4.4.3-2"}, // identical
|
||||
{"1:2ab:5", EQUAL, "1:2ab:5"}, // this is correct...
|
||||
{"7:1-a:b-5", EQUAL, "7:1-a:b-5"}, // and this
|
||||
{"57:1.2.3abYZ+~-4-5", EQUAL, "57:1.2.3abYZ+~-4-5"}, // and those too
|
||||
{"1.2.3", EQUAL, "0:1.2.3"}, // zero epoch
|
||||
{"1.2.3", EQUAL, "1.2.3-0"}, // zero revision
|
||||
{"009", EQUAL, "9"}, // zeroes…
|
||||
{"009ab5", EQUAL, "9ab5"}, // there as well
|
||||
{"1.2.3", LESS, "1.2.3-1"}, // added non-zero revision
|
||||
{"1.2.3", LESS, "1.2.4"}, // just bigger
|
||||
{"1.2.4", GREATER, "1.2.3"}, // order doesn't matter
|
||||
{"1.2.24", GREATER, "1.2.3"}, // bigger, eh?
|
||||
{"0.10.0", GREATER, "0.8.7"}, // bigger, eh?
|
||||
{"3.2", GREATER, "2.3"}, // major number rocks
|
||||
{"1.3.2a", GREATER, "1.3.2"}, // letters rock
|
||||
{"0.5.0~git", LESS, "0.5.0~git2"}, // numbers rock
|
||||
{"2a", LESS, "21"}, // but not in all places
|
||||
{"1.3.2a", LESS, "1.3.2b"}, // but there is another letter
|
||||
{"1:1.2.3", GREATER, "1.2.4"}, // epoch rocks
|
||||
{"1:1.2.3", LESS, "1:1.2.4"}, // bigger anyway
|
||||
{"1.2a+~bCd3", LESS, "1.2a++"}, // tilde doesn't rock
|
||||
{"1.2a+~bCd3", GREATER, "1.2a+~"}, // but first is longer!
|
||||
{"5:2", GREATER, "304-2"}, // epoch rocks
|
||||
{"5:2", LESS, "304:2"}, // so big epoch?
|
||||
{"25:2", GREATER, "3:2"}, // 25 > 3, obviously
|
||||
{"1:2:123", LESS, "1:12:3"}, // 12 > 2
|
||||
{"1.2-5", LESS, "1.2-3-5"}, // 1.2 < 1.2-3
|
||||
{"5.10.0", GREATER, "5.005"}, // preceding zeroes don't matters
|
||||
{"3a9.8", LESS, "3.10.2"}, // letters are before all letter symbols
|
||||
{"3a9.8", GREATER, "3~10"}, // but after the tilde
|
||||
{"1.4+OOo3.0.0~", LESS, "1.4+OOo3.0.0-4"}, // another tilde check
|
||||
{"2.4.7-1", LESS, "2.4.7-z"}, // revision comparing
|
||||
{"1.002-1+b2", GREATER, "1.00"}, // whatever...
|
||||
}
|
||||
|
||||
for _, c := range cases {
|
||||
v1, err1 := NewVersion(c.v1)
|
||||
v2, err2 := NewVersion(c.v2)
|
||||
if assert.Nil(t, err1) && assert.Nil(t, err2) {
|
||||
cmp := v1.Compare(v2)
|
||||
assert.Equal(t, c.expected, cmp, "%s vs. %s, = %d, expected %d", c.v1, c.v2, cmp, c.expected)
|
||||
|
||||
cmp = v2.Compare(v1)
|
||||
assert.Equal(t, -c.expected, cmp, "%s vs. %s, = %d, expected %d", c.v2, c.v1, cmp, -c.expected)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestVersionJson(t *testing.T) {
|
||||
v, _ := NewVersion("57:1.2.3abYZ+~-4-5")
|
||||
|
||||
// Marshal
|
||||
json, err := v.MarshalJSON()
|
||||
assert.Nil(t, err)
|
||||
assert.Equal(t, "\""+v.String()+"\"", string(json))
|
||||
|
||||
// Unmarshal
|
||||
var v2 Version
|
||||
v2.UnmarshalJSON(json)
|
||||
assert.Equal(t, v, v2)
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user