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*: prepare for time comparison with remote

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Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
This commit is contained in:
Vincent Batts 2017-02-04 11:06:57 -05:00
parent c5585b2c1d
commit 871ba61aa1
Signed by: vbatts
GPG key ID: 10937E57733F1362
2 changed files with 66 additions and 3 deletions
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28
fetch/fetch.go
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@ -13,10 +13,38 @@ type Repo struct {
URL string
}
func (r Repo) head(file string) (*http.Response, error) {
return http.Head(r.URL + "/" + file)
}
func (r Repo) get(file string) (*http.Response, error) {
return http.Get(r.URL + "/" + file)
}
func (r Repo) NewerChangeLog(than time.Time) (e []changelog.Entry, mtime time.Time, err error) {
resp, err := r.head("ChangeLog.txt")
if err != nil {
return nil, time.Unix(0, 0), err
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return nil, time.Unix(0, 0), fmt.Errorf("%d status from %s", resp.StatusCode, resp.Request.URL)
}
mtime, err = http.ParseTime(resp.Header.Get("last-modified"))
if err != nil {
return nil, time.Unix(0, 0), err
}
if mtime.After(than) {
return r.ChangeLog()
}
return nil, time.Unix(0, 0), NotNewer
}
// NotNewer is a status error usage to indicate that the remote file is not newer
var NotNewer = fmt.Errorf("Remote file is not newer than provided time")
// ChangeLog fetches the ChangeLog.txt for this remote Repo, along with the
// last-modified (for comparisons).
func (r Repo) ChangeLog() (e []changelog.Entry, mtime time.Time, err error) {