/usr/share/gocode/src/github.com/Masterminds/vcs/repo.go is in golang-github-masterminds-vcs-dev 1.10.0-2.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 | // Package vcs provides the ability to work with varying version control systems
// (VCS), also known as source control systems (SCM) though the same interface.
//
// This package includes a function that attempts to detect the repo type from
// the remote URL and return the proper type. For example,
//
// remote := "https://github.com/Masterminds/vcs"
// local, _ := ioutil.TempDir("", "go-vcs")
// repo, err := NewRepo(remote, local)
//
// In this case repo will be a GitRepo instance. NewRepo can detect the VCS for
// numerous popular VCS and from the URL. For example, a URL ending in .git
// that's not from one of the popular VCS will be detected as a Git repo and
// the correct type will be returned.
//
// If you know the repository type and would like to create an instance of a
// specific type you can use one of constructors for a type. They are NewGitRepo,
// NewSvnRepo, NewBzrRepo, and NewHgRepo. The definition and usage is the same
// as NewRepo.
//
// Once you have an object implementing the Repo interface the operations are
// the same no matter which VCS you're using. There are some caveats. For
// example, each VCS has its own version formats that need to be respected and
// checkout out branches, if a branch is being worked with, is different in
// each VCS.
package vcs
import (
"fmt"
"io/ioutil"
"log"
"os"
"os/exec"
"regexp"
"strings"
"time"
)
// Logger is where you can provide a logger, implementing the log.Logger interface,
// where verbose output from each VCS will be written. The default logger does
// not log data. To log data supply your own logger or change the output location
// of the provided logger.
var Logger *log.Logger
func init() {
// Initialize the logger to one that does not actually log anywhere. This is
// to be overridden by the package user by setting vcs.Logger to a different
// logger.
Logger = log.New(ioutil.Discard, "go-vcs", log.LstdFlags)
}
const longForm = "2006-01-02 15:04:05 -0700"
// Type describes the type of VCS
type Type string
// VCS types
const (
NoVCS Type = ""
Git Type = "git"
Svn Type = "svn"
Bzr Type = "bzr"
Hg Type = "hg"
)
// Repo provides an interface to work with repositories using different source
// control systems such as Git, Bzr, Mercurial, and SVN. For implementations
// of this interface see BzrRepo, GitRepo, HgRepo, and SvnRepo.
type Repo interface {
// Vcs retrieves the underlying VCS being implemented.
Vcs() Type
// Remote retrieves the remote location for a repo.
Remote() string
// LocalPath retrieves the local file system location for a repo.
LocalPath() string
// Get is used to perform an initial clone/checkout of a repository.
Get() error
// Initializes a new repository locally.
Init() error
// Update performs an update to an existing checkout of a repository.
Update() error
// UpdateVersion sets the version of a package of a repository.
UpdateVersion(string) error
// Version retrieves the current version.
Version() (string, error)
// Current retrieves the current version-ish. This is different from the
// Version method. The output could be a branch name if on the tip of a
// branch (git), a tag if on a tag, a revision if on a specific revision
// that's not the tip of the branch. The values here vary based on the VCS.
Current() (string, error)
// Date retrieves the date on the latest commit.
Date() (time.Time, error)
// CheckLocal verifies the local location is of the correct VCS type
CheckLocal() bool
// Branches returns a list of available branches on the repository.
Branches() ([]string, error)
// Tags returns a list of available tags on the repository.
Tags() ([]string, error)
// IsReference returns if a string is a reference. A reference can be a
// commit id, branch, or tag.
IsReference(string) bool
// IsDirty returns if the checkout has been modified from the checked
// out reference.
IsDirty() bool
// CommitInfo retrieves metadata about a commit.
CommitInfo(string) (*CommitInfo, error)
// TagsFromCommit retrieves tags from a commit id.
TagsFromCommit(string) ([]string, error)
// Ping returns if remote location is accessible.
Ping() bool
// RunFromDir executes a command from repo's directory.
RunFromDir(cmd string, args ...string) ([]byte, error)
// ExportDir exports the current revision to the passed in directory.
ExportDir(string) error
}
// NewRepo returns a Repo based on trying to detect the source control from the
// remote and local locations. The appropriate implementation will be returned
// or an ErrCannotDetectVCS if the VCS type cannot be detected.
// Note, this function may make calls to the Internet to determind help determine
// the VCS.
func NewRepo(remote, local string) (Repo, error) {
vtype, remote, err := detectVcsFromRemote(remote)
// From the remote URL the VCS could not be detected. See if the local
// repo contains enough information to figure out the VCS. The reason the
// local repo is not checked first is because of the potential for VCS type
// switches which will be detected in each of the type builders.
if err == ErrCannotDetectVCS {
vtype, err = DetectVcsFromFS(local)
}
if err != nil {
return nil, err
}
switch vtype {
case Git:
return NewGitRepo(remote, local)
case Svn:
return NewSvnRepo(remote, local)
case Hg:
return NewHgRepo(remote, local)
case Bzr:
return NewBzrRepo(remote, local)
}
// Should never fall through to here but just in case.
return nil, ErrCannotDetectVCS
}
// CommitInfo contains metadata about a commit.
type CommitInfo struct {
// The commit id
Commit string
// Who authored the commit
Author string
// Date of the commit
Date time.Time
// Commit message
Message string
}
type base struct {
remote, local string
Logger *log.Logger
}
func (b *base) log(v interface{}) {
b.Logger.Printf("%s", v)
}
// Remote retrieves the remote location for a repo.
func (b *base) Remote() string {
return b.remote
}
// LocalPath retrieves the local file system location for a repo.
func (b *base) LocalPath() string {
return b.local
}
func (b *base) setRemote(remote string) {
b.remote = remote
}
func (b *base) setLocalPath(local string) {
b.local = local
}
func (b base) run(cmd string, args ...string) ([]byte, error) {
out, err := exec.Command(cmd, args...).CombinedOutput()
b.log(out)
if err != nil {
err = fmt.Errorf("%s: %s", out, err)
}
return out, err
}
func (b *base) RunFromDir(cmd string, args ...string) ([]byte, error) {
c := exec.Command(cmd, args...)
c.Dir = b.local
c.Env = envForDir(c.Dir)
out, err := c.CombinedOutput()
return out, err
}
func (b *base) referenceList(c, r string) []string {
var out []string
re := regexp.MustCompile(r)
for _, m := range re.FindAllStringSubmatch(c, -1) {
out = append(out, m[1])
}
return out
}
func envForDir(dir string) []string {
env := os.Environ()
return mergeEnvLists([]string{"PWD=" + dir}, env)
}
func mergeEnvLists(in, out []string) []string {
NextVar:
for _, inkv := range in {
k := strings.SplitAfterN(inkv, "=", 2)[0]
for i, outkv := range out {
if strings.HasPrefix(outkv, k) {
out[i] = inkv
continue NextVar
}
}
out = append(out, inkv)
}
return out
}
func depInstalled(name string) bool {
if _, err := exec.LookPath(name); err != nil {
return false
}
return true
}
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