2 SGBlog -- Git-backed CGI/inetd blogging/phlogging engine
3 Copyright (C) 2020 Sergey Matveev <stargrave@stargrave.org>
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU Affero General Public License as
7 published by the Free Software Foundation, version 3 of the License.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU Affero General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
33 "github.com/go-git/go-git/v5"
34 "github.com/go-git/go-git/v5/plumbing"
35 "github.com/go-git/go-git/v5/plumbing/object"
36 "github.com/hjson/hjson-go"
37 "go.stargrave.org/sgblog"
41 TmplGopherMenu = `{{$CR := printf "\r"}}{{$CRLF := printf "\r\n" -}}
42 {{- define "domainPort" }} {{.GopherDomain}} 70{{end}}{{$Cfg := .Cfg -}}
43 i{{.Cfg.Title}} {{if .Topic}}(topic: {{.Topic}}) {{end}}({{.Offset}}-{{.OffsetNext}}) err{{template "domainPort" .Cfg}}{{$CRLF -}}
44 {{- if .Cfg.AboutURL}}hAbout URL:{{.Cfg.AboutURL}}{{template "domainPort" .Cfg}}{{$CRLF}}{{end -}}
45 {{- if .Offset}}1Prev {{if .Topic}}{{.Topic}}/{{end}}offset/{{.OffsetPrev}}{{template "domainPort" .Cfg}}{{$CRLF}}{{end -}}
46 {{- if not .LogEnded}}1Next {{if .Topic}}{{.Topic}}/{{end}}offset/{{.OffsetNext}}{{template "domainPort" .Cfg}}{{$CRLF}}{{end -}}
47 {{- $datePrev := "0001-01-01" -}}
48 {{- range .Entries -}}
49 {{- $dateCur := .Commit.Author.When.Format "2006-01-02" -}}
50 {{- if ne $dateCur $datePrev}}{{$datePrev = $dateCur}}
51 i{{$dateCur}} err{{template "domainPort" $Cfg}}{{$CR}}{{end}}
52 0[{{.Commit.Author.When.Format "15:04"}}] {{.Title}} ({{.LinesNum}}L){{with .CommentsNum}} ({{.}}C){{end}}{{if .Topics}}{{range .Topics}} {{.}}{{end}}{{end}} /{{.Commit.Hash.String}}{{template "domainPort" $Cfg}}{{$CR}}{{end}}
54 1Topic: {{.}} {{.}}/offset/0{{template "domainPort" $Cfg}}{{$CR}}{{end}}
55 iGenerated by: SGBlog {{.Version}} err{{template "domainPort" .Cfg}}{{$CR}}
57 TmplGopherEntry = `What: {{.Commit.Hash.String}}
59 ------------------------------------------------------------------------
60 {{if .Topics}}Topics:{{range .Topics}} {{.}}{{end}}{{end}}
61 ------------------------------------------------------------------------
64 ------------------------------------------------------------------------
67 {{- if .Cfg.CommentsEmail}}
68 ------------------------------------------------------------------------
69 leave comment: mailto:{{.Cfg.CommentsEmail}}?subject={{.Commit.Hash.String}}
70 {{end}}{{range $idx, $comment := .Comments}}
71 ------------------------------------------------------------------------
75 ------------------------------------------------------------------------
76 Generated by: SGBlog {{.Version}}
80 type TableMenuEntry struct {
90 cfgRaw, err := ioutil.ReadFile(cfgPath)
94 var cfgGeneral map[string]interface{}
95 if err = hjson.Unmarshal(cfgRaw, &cfgGeneral); err != nil {
98 cfgRaw, err = json.Marshal(cfgGeneral)
103 if err = json.Unmarshal(cfgRaw, &cfg); err != nil {
106 if cfg.GopherDomain == "" {
107 log.Fatalln("GopherDomain is not configured")
110 headHash, err := initRepo(cfg)
115 scanner := bufio.NewScanner(io.LimitReader(os.Stdin, 1<<8))
117 log.Fatalln(errors.New("no CRLF found"))
119 selector := scanner.Text()
121 selector = "offset/0"
123 selectorParts := strings.Split(selector, "/")
124 if strings.HasPrefix(selector, "URL:") {
125 selector = selector[len("URL:"):]
128 <meta http-equiv="Refresh" content="1; url=%s" />
129 <title>Redirect to non-gopher URL</title>
132 Redirecting to <a href="%s">%s</a>...
135 `, selector, selector, selector)
136 } else if sha1DigestRe.MatchString(selector) {
137 commit, err := repo.CommitObject(plumbing.NewHash(selector[1:]))
141 tmpl := template.Must(template.New("entry").Parse(TmplGopherEntry))
142 err = tmpl.Execute(os.Stdout, struct {
143 Commit *object.Commit
152 When: commit.Author.When.Format(sgblog.WhenFmt),
154 Note: string(getNote(notesTree, commit.Hash)),
155 Comments: parseComments(getNote(commentsTree, commit.Hash)),
156 Topics: parseTopics(getNote(topicsTree, commit.Hash)),
157 Version: sgblog.Version,
162 } else if selectorParts[len(selectorParts)-2] == "offset" {
163 offset, err := strconv.Atoi(selectorParts[len(selectorParts)-1])
167 repoLog, err := repo.Log(&git.LogOptions{From: *headHash})
171 topicsCache, err := getTopicsCache(cfg, repoLog)
175 repoLog, err = repo.Log(&git.LogOptions{From: *headHash})
181 if len(selectorParts) == 3 {
182 topic = selectorParts[0]
184 var commits CommitIterNext
186 for i := 0; i < offset; i++ {
187 if _, err = repoLog.Next(); err != nil {
193 hashes := topicsCache[topic]
195 log.Fatalln(errors.New("no posts with that topic"))
197 if len(hashes) > offset {
198 hashes = hashes[offset:]
200 commits = &HashesIter{hashes}
204 entries := make([]TableMenuEntry, 0, PageEntries)
205 for i := 0; i < PageEntries; i++ {
206 commit, err := commits.Next()
211 lines := msgSplit(commit.Message)
212 entries = append(entries, TableMenuEntry{
215 LinesNum: len(lines) - 2,
216 CommentsNum: len(parseComments(getNote(commentsTree, commit.Hash))),
217 Topics: parseTopics(getNote(topicsTree, commit.Hash)),
220 tmpl := template.Must(template.New("menu").Parse(TmplGopherMenu))
221 offsetPrev := offset - PageEntries
225 err = tmpl.Execute(os.Stdout, struct {
232 Entries []TableMenuEntry
239 OffsetPrev: offsetPrev,
240 OffsetNext: offset + PageEntries,
243 Topics: topicsCache.Topics(),
244 Version: sgblog.Version,
250 log.Fatalln(errors.New("unknown selector"))