git-annex: views for annex files (#22)

This updates the repo index/file view endpoints so annex files match the way
LFS files are rendered, making annexed files accessible via the web instead of
being black boxes only accessible by git clone.

This mostly just duplicates the existing LFS logic. It doesn't try to combine itself
with the existing logic, to make merging with upstream easier. If upstream ever
decides to accept, I would like to try to merge the redundant logic.

The one bit that doesn't directly copy LFS is my choice to hide annex-symlinks.
LFS files are always _pointer files_ and therefore always render with the "file"
icon and no special label, but annex files come in two flavours: symlinks or
pointer files. I've conflated both kinds to try to give a consistent experience.

The tests in here ensure the correct download link (/media, from the last PR)
renders in both the toolbar and, if a binary file (like most annexed files will be),
in the main pane, but it also adds quite a bit of code to make sure text files
that happen to be annexed are dug out and rendered inline like LFS files are.

modules/base/tool.go

@@ -19,6 +19,7 @@ import (
 	"unicode"
 	"unicode/utf8"
 
+	"code.gitea.io/gitea/modules/annex"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
@@ -204,6 +205,12 @@ func IsLetter(ch rune) bool {
 func EntryIcon(entry *git.TreeEntry) string {
 	switch {
 	case entry.IsLink():
+		isAnnexed, _ := annex.IsAnnexed(entry.Blob())
+		if isAnnexed {
+			// git-annex files are sometimes stored as symlinks;
+			// short-circuit that so like LFS they are displayed as regular files
+			return "file"
+		}
 		te, err := entry.FollowLink()
 		if err != nil {
 			log.Debug(err.Error())

options/locale/locale_cs-CZ.ini

@@ -1094,6 +1094,7 @@ view_git_blame=Zobrazit Git Blame
 video_not_supported_in_browser=Váš prohlížeč nepodporuje značku pro HTML5 video.
 audio_not_supported_in_browser=Váš prohlížeč nepodporuje značku pro HTML5 audio.
 stored_lfs=Uloženo pomocí Git LFS
+stored_annex=Uloženo pomocí Git Annex
 symbolic_link=Symbolický odkaz
 commit_graph=Graf commitů
 commit_graph.select=Vybrat větve
@@ -1113,6 +1114,7 @@ editor.upload_file=Nahrát soubor
 editor.edit_file=Upravit soubor
 editor.preview_changes=Náhled změn
 editor.cannot_edit_lfs_files=LFS soubory nemohou být upravovány přes webové rozhraní.
+editor.cannot_edit_annex_files=Annex soubory nemohou být upravovány přes webové rozhraní.
 editor.cannot_edit_non_text_files=Binární soubory nemohou být upravovány přes webové rozhraní.
 editor.edit_this_file=Upravit soubor
 editor.this_file_locked=Soubor je uzamčen

options/locale/locale_de-DE.ini

@@ -1182,6 +1182,7 @@ view_git_blame=Git Blame ansehen
 video_not_supported_in_browser=Dein Browser unterstützt das HTML5 'video'-Tag nicht.
 audio_not_supported_in_browser=Dein Browser unterstützt den HTML5 'audio'-Tag nicht.
 stored_lfs=Gespeichert mit Git LFS
+stored_annex=Gespeichert mit Git Annex
 symbolic_link=Softlink
 executable_file=Ausführbare Datei
 commit_graph=Commit graph
@@ -1205,6 +1206,7 @@ editor.upload_file=Datei hochladen
 editor.edit_file=Datei bearbeiten
 editor.preview_changes=Vorschau der Änderungen
 editor.cannot_edit_lfs_files=LFS-Dateien können im Webinterface nicht bearbeitet werden.
+editor.cannot_edit_annex_files=Annex-Dateien können im Webinterface nicht bearbeitet werden.
 editor.cannot_edit_non_text_files=Binärdateien können nicht im Webinterface bearbeitet werden.
 editor.edit_this_file=Datei bearbeiten
 editor.this_file_locked=Datei ist gesperrt

options/locale/locale_el-GR.ini

@@ -1111,6 +1111,7 @@ view_git_blame=Προβολή Git Blame
 video_not_supported_in_browser=Το πρόγραμμα περιήγησής σας δεν υποστηρίζει την ετικέτα HTML5 'video'.
 audio_not_supported_in_browser=Το πρόγραμμα περιήγησής σας δεν υποστηρίζει την ετικέτα HTML5 'audio'.
 stored_lfs=Αποθηκεύτηκε με το Git LFS
+stored_annex=Αποθηκεύτηκε με το Git Annex
 symbolic_link=Symbolic link
 commit_graph=Γράφημα Υποβολών
 commit_graph.select=Επιλογή κλάδων
@@ -1130,6 +1131,7 @@ editor.upload_file=Ανέβασμα Αρχείου
 editor.edit_file=Επεξεργασία Αρχείου
 editor.preview_changes=Προεπισκόπηση Αλλαγών
 editor.cannot_edit_lfs_files=Τα αρχεία LFS δεν μπορούν να επεξεργαστούν στη διεπαφή web.
+editor.cannot_edit_annex_files=Τα αρχεία Annex δεν μπορούν να επεξεργαστούν στη διεπαφή web.
 editor.cannot_edit_non_text_files=Τα δυαδικά αρχεία δεν μπορούν να επεξεργαστούν στη διεπαφή web.
 editor.edit_this_file=Επεξεργασία Αρχείου
 editor.this_file_locked=Το αρχείο είναι κλειδωμένο

options/locale/locale_en-US.ini

@@ -1179,6 +1179,7 @@ view_git_blame = View Git Blame
 video_not_supported_in_browser = Your browser does not support the HTML5 'video' tag.
 audio_not_supported_in_browser = Your browser does not support the HTML5 'audio' tag.
 stored_lfs = Stored with Git LFS
+stored_annex = Stored with Git Annex
 symbolic_link = Symbolic link
 executable_file = Executable File
 commit_graph = Commit Graph
@@ -1202,6 +1203,7 @@ editor.upload_file = Upload File
 editor.edit_file = Edit File
 editor.preview_changes = Preview Changes
 editor.cannot_edit_lfs_files = LFS files cannot be edited in the web interface.
+editor.cannot_edit_annex_files = Annex files cannot be edited in the web interface.
 editor.cannot_edit_non_text_files = Binary files cannot be edited in the web interface.
 editor.edit_this_file = Edit File
 editor.this_file_locked = File is locked

options/locale/locale_es-ES.ini

@@ -1182,6 +1182,7 @@ view_git_blame=Ver la culpa de Git
 video_not_supported_in_browser=Su navegador no soporta el tag video de HTML5.
 audio_not_supported_in_browser=Su navegador no soporta el tag audio de HTML5.
 stored_lfs=Almacenados con Git LFS
+stored_annex=Almacenados con Git Annex
 symbolic_link=Enlace simbólico
 executable_file=Archivo Ejecutable
 commit_graph=Gráfico de commits
@@ -1205,6 +1206,7 @@ editor.upload_file=Subir archivo
 editor.edit_file=Editar Archivo
 editor.preview_changes=Vista previa de los cambios
 editor.cannot_edit_lfs_files=Los archivos LFS no se pueden editar en la interfaz web.
+editor.cannot_edit_annex_files=Los archivos Annex no se pueden editar en la interfaz web.
 editor.cannot_edit_non_text_files=Los archivos binarios no se pueden editar en la interfaz web.
 editor.edit_this_file=Editar Archivo
 editor.this_file_locked=El archivo está bloqueado

options/locale/locale_fa-IR.ini

@@ -923,6 +923,7 @@ file_copy_permalink=پرمالینک را کپی کنید
 video_not_supported_in_browser=مرورگر شما از تگ video که در HTML5 تعریف شده است، پشتیبانی نمی کند.
 audio_not_supported_in_browser=مرورگر شما از تگ audio که در HTML5 تعریف شده است، پشتیبانی نمی کند.
 stored_lfs=ذخیره شده با GIT LFS
+stored_annex=ذخیره شده با GIT Annex
 symbolic_link=پیوند نمادین
 commit_graph=نمودار کامیت
 commit_graph.select=انتخاب برنچها
@@ -940,6 +941,7 @@ editor.upload_file=بارگذاری پرونده
 editor.edit_file=ویرایش پرونده
 editor.preview_changes=پیش نمایش تغییرات
 editor.cannot_edit_lfs_files=پرونده های LFS در صحفه وب قابل تغییر نیست.
+editor.cannot_edit_annex_files=پرونده های Annex در صحفه وب قابل تغییر نیست.
 editor.cannot_edit_non_text_files=پرونده‎های دودویی در صفحه وب قابل تغییر نیست.
 editor.edit_this_file=ویرایش پرونده
 editor.this_file_locked=پرونده قفل شده است

options/locale/locale_fr-FR.ini

@@ -1182,6 +1182,7 @@ view_git_blame=Voir Git Blâme
 video_not_supported_in_browser=Votre navigateur ne supporte pas la balise « vidéo » HTML5.
 audio_not_supported_in_browser=Votre navigateur ne supporte pas la balise « audio » HTML5.
 stored_lfs=Stocké avec Git LFS
+stored_annex=Stocké avec Git Annex
 symbolic_link=Lien symbolique
 executable_file=Fichiers exécutables
 commit_graph=Graphe des révisions
@@ -1205,6 +1206,7 @@ editor.upload_file=Téléverser un fichier
 editor.edit_file=Modifier le fichier
 editor.preview_changes=Aperçu des modifications
 editor.cannot_edit_lfs_files=Les fichiers LFS ne peuvent pas être modifiés dans l'interface web.
+editor.cannot_edit_annex_files=Les fichiers Annex ne peuvent pas être modifiés dans l'interface web.
 editor.cannot_edit_non_text_files=Les fichiers binaires ne peuvent pas être édités dans l'interface web.
 editor.edit_this_file=Modifier le fichier
 editor.this_file_locked=Le fichier est verrouillé

options/locale/locale_hu-HU.ini

@@ -692,6 +692,7 @@ file_too_large=Ez a fájl túl nagy ahhoz, hogy megjelenítsük.
 video_not_supported_in_browser=A böngésző nem támogatja a HTML5 video tag-et.
 audio_not_supported_in_browser=A böngésző nem támogatja a HTML5 audio tag-et.
 stored_lfs=Git LFS-el eltárolva
+stored_annex=Git Annex-el eltárolva
 symbolic_link=Szimbolikus hivatkozás
 commit_graph=Commit gráf
 commit_graph.hide_pr_refs=Pull request-ek elrejtése
@@ -704,6 +705,7 @@ editor.upload_file=Fájl feltöltése
 editor.edit_file=Fájl szerkesztése
 editor.preview_changes=Változások előnézete
 editor.cannot_edit_lfs_files=LFS fájlok nem szerkeszthetőek a webes felületen.
+editor.cannot_edit_annex_files=Annex fájlok nem szerkeszthetőek a webes felületen.
 editor.cannot_edit_non_text_files=Bináris fájlok nem szerkeszthetőek a webes felületen.
 editor.edit_this_file=Fájl szerkesztése
 editor.this_file_locked=Zárolt állomány

options/locale/locale_id-ID.ini

@@ -598,6 +598,7 @@ file_permalink=Permalink
 file_too_large=Berkas terlalu besar untuk ditampilkan.
 
 stored_lfs=Tersimpan dengan GIT LFS
+stored_annex=Tersimpan dengan GIT Annex
 commit_graph=Grafik Komit
 blame=Salahkan
 normal_view=Pandangan Normal
@@ -609,6 +610,7 @@ editor.upload_file=Unggah Berkas
 editor.edit_file=Sunting Berkas
 editor.preview_changes=Tinjau Perubahan
 editor.cannot_edit_lfs_files=Berkas LFS tidak dapat disunting dalam antarmuka web.
+editor.cannot_edit_annex_files=Berkas Annex tidak dapat disunting dalam antarmuka web.
 editor.cannot_edit_non_text_files=Berkas biner tidak dapat disunting dalam antarmuka web.
 editor.edit_this_file=Sunting Berkas
 editor.this_file_locked=Berkas terkunci

options/locale/locale_is-IS.ini

@@ -683,6 +683,7 @@ file_view_rendered=Skoða Unnið
 
 file_copy_permalink=Afrita Varanlega Slóð
 stored_lfs=Geymt með Git LFS
+stored_annex=Geymt með Git Annex
 commit_graph.hide_pr_refs=Fela Sameiningarbeiðnir
 commit_graph.monochrome=Einlitað
 commit_graph.color=Litað

options/locale/locale_it-IT.ini

@@ -994,6 +994,7 @@ view_git_blame=Visualizza Git Blame
 video_not_supported_in_browser=Il tuo browser non supporta i tag "video" di HTML5.
 audio_not_supported_in_browser=Il tuo browser non supporta il tag "video" di HTML5.
 stored_lfs=Memorizzati con Git LFS
+stored_annex=Memorizzati con Git Annex
 symbolic_link=Link Simbolico
 commit_graph=Grafico dei commit
 commit_graph.select=Seleziona rami
@@ -1012,6 +1013,7 @@ editor.upload_file=Carica File
 editor.edit_file=Modifica File
 editor.preview_changes=Anteprima modifiche
 editor.cannot_edit_lfs_files=I file LFS non possono essere modificati nell'interfaccia web.
+editor.cannot_edit_annex_files=I file Annex non possono essere modificati nell'interfaccia web.
 editor.cannot_edit_non_text_files=I file binari non possono essere modificati tramite interfaccia web.
 editor.edit_this_file=Modifica file
 editor.this_file_locked=Il file è bloccato

options/locale/locale_ja-JP.ini

@@ -1182,6 +1182,7 @@ view_git_blame=Git Blameを表示
 video_not_supported_in_browser=このブラウザはHTML5のvideoタグをサポートしていません。
 audio_not_supported_in_browser=このブラウザーはHTML5のaudioタグをサポートしていません。
 stored_lfs=Git LFSで保管されています
+stored_annex=Git Annexで保管されています
 symbolic_link=シンボリック リンク
 executable_file=実行ファイル
 commit_graph=コミットグラフ
@@ -1205,6 +1206,7 @@ editor.upload_file=ファイルをアップロード
 editor.edit_file=ファイルを編集
 editor.preview_changes=変更をプレビュー
 editor.cannot_edit_lfs_files=LFSのファイルはWebインターフェースで編集できません。
+editor.cannot_edit_annex_files=AnnexのファイルはWebインターフェースで編集できません。
 editor.cannot_edit_non_text_files=バイナリファイルはWebインターフェースで編集できません。
 editor.edit_this_file=ファイルを編集
 editor.this_file_locked=ファイルはロックされています

options/locale/locale_ko-KR.ini

@@ -638,6 +638,7 @@ file_too_large=보여주기에는 파일이 너무 큽니다.
 video_not_supported_in_browser=당신의 브라우저가 HTML5 'video' 태그를 지원하지 않습니다.
 audio_not_supported_in_browser=당신의 브라우저가 HTML5 'audio' 태그를 지원하지 않습니다.
 stored_lfs=Git LFS에 저장되어 있습니다
+stored_annex=Git Annex에 저장되어 있습니다
 commit_graph=커밋 그래프
 
 editor.new_file=새 파일

options/locale/locale_lv-LV.ini

@@ -1110,6 +1110,7 @@ view_git_blame=Aplūkot Git vainīgos
 video_not_supported_in_browser=Jūsu pārlūks neatbalsta HTML5 video.
 audio_not_supported_in_browser=Jūsu pārlūks neatbalsta HTML5 audio.
 stored_lfs=Saglabāts Git LFS
+stored_annex=Saglabāts Git Annex
 symbolic_link=Simboliska saite
 commit_graph=Revīziju grafs
 commit_graph.select=Izvēlieties atzarus
@@ -1129,6 +1130,7 @@ editor.upload_file=Augšupielādēt failu
 editor.edit_file=Labot failu
 editor.preview_changes=Priekšskatīt izmaiņas
 editor.cannot_edit_lfs_files=LFS failus nevar labot no tīmekļa saskarnes.
+editor.cannot_edit_annex_files=Annex failus nevar labot no tīmekļa saskarnes.
 editor.cannot_edit_non_text_files=Nav iespējams labot bināros failus no pārlūka saskarnes.
 editor.edit_this_file=Labot failu
 editor.this_file_locked=Fails ir bloķēts

options/locale/locale_nl-NL.ini

@@ -992,6 +992,7 @@ view_git_blame=Bekijk Git Blame
 video_not_supported_in_browser=Je browser ondersteunt de HTML5 'video'-tag niet.
 audio_not_supported_in_browser=Je browser ondersteunt de HTML5 'audio'-tag niet.
 stored_lfs=Opgeslagen met Git LFS
+stored_annex=Opgeslagen met Git Annex
 symbolic_link=Symbolic link
 commit_graph=Commit grafiek
 commit_graph.select=Selecteer branches
@@ -1010,6 +1011,7 @@ editor.upload_file=Upload bestand
 editor.edit_file=Bewerk bestand
 editor.preview_changes=Voorbeeld tonen
 editor.cannot_edit_lfs_files=LFS-bestanden kunnen niet worden bewerkt in de webinterface.
+editor.cannot_edit_annex_files=Annex-bestanden kunnen niet worden bewerkt in de webinterface.
 editor.cannot_edit_non_text_files=Binaire bestanden kunnen niet worden bewerkt in de webinterface.
 editor.edit_this_file=Bewerk bestand
 editor.this_file_locked=Bestand is vergrendeld

options/locale/locale_pl-PL.ini

@@ -927,6 +927,7 @@ file_copy_permalink=Kopiuj bezpośredni odnośnik
 video_not_supported_in_browser=Twoja przeglądarka nie obsługuje znacznika HTML5 "video".
 audio_not_supported_in_browser=Twoja przeglądarka nie obsługuje znacznika HTML5 "audio".
 stored_lfs=Przechowane za pomocą Git LFS
+stored_annex=Przechowane za pomocą Git Annex
 symbolic_link=Dowiązanie symboliczne
 commit_graph=Wykres commitów
 commit_graph.select=Wybierz gałęzie
@@ -944,6 +945,7 @@ editor.upload_file=Wyślij plik
 editor.edit_file=Edytuj plik
 editor.preview_changes=Podgląd zmian
 editor.cannot_edit_lfs_files=Pliki LFS nie mogą być edytowane poprzez interfejs przeglądarkowy.
+editor.cannot_edit_annex_files=Pliki Annex nie mogą być edytowane poprzez interfejs przeglądarkowy.
 editor.cannot_edit_non_text_files=Pliki binarne nie mogą być edytowane poprzez interfejs przeglądarkowy.
 editor.edit_this_file=Edytuj plik
 editor.this_file_locked=Plik jest zablokowany

options/locale/locale_pt-BR.ini

@@ -1171,6 +1171,7 @@ view_git_blame=Ver Git Blame
 video_not_supported_in_browser=Seu navegador não suporta a tag 'video' do HTML5.
 audio_not_supported_in_browser=Seu navegador não suporta a tag 'audio' do HTML5.
 stored_lfs=Armazenado com Git LFS
+stored_annex=Armazenado com Git Annex
 symbolic_link=Link simbólico
 executable_file=Arquivo executável
 commit_graph=Gráfico de commits
@@ -1194,6 +1195,7 @@ editor.upload_file=Enviar arquivo
 editor.edit_file=Editar arquivo
 editor.preview_changes=Visualizar alterações
 editor.cannot_edit_lfs_files=Arquivos LFS não podem ser editados na interface web.
+editor.cannot_edit_annex_files=Arquivos Annex não podem ser editados na interface web.
 editor.cannot_edit_non_text_files=Arquivos binários não podem ser editados na interface web.
 editor.edit_this_file=Editar arquivo
 editor.this_file_locked=Arquivo está bloqueado

options/locale/locale_pt-PT.ini

@@ -1182,6 +1182,7 @@ view_git_blame=Ver Git Blame
 video_not_supported_in_browser=O seu navegador não suporta a etiqueta 'video' do HTML5.
 audio_not_supported_in_browser=O seu navegador não suporta a etiqueta 'audio' do HTML5.
 stored_lfs=Armazenado com Git LFS
+stored_annex=Armazenado com Git Annex
 symbolic_link=Ligação simbólica
 executable_file=Ficheiro executável
 commit_graph=Gráfico de cometimentos
@@ -1205,6 +1206,7 @@ editor.upload_file=Carregar ficheiro
 editor.edit_file=Editar ficheiro
 editor.preview_changes=Pré-visualizar modificações
 editor.cannot_edit_lfs_files=Ficheiros LFS não podem ser editados na interface web.
+editor.cannot_edit_annex_files=Ficheiros Annex não podem ser editados na interface web.
 editor.cannot_edit_non_text_files=Ficheiros binários não podem ser editados na interface da web.
 editor.edit_this_file=Editar ficheiro
 editor.this_file_locked=Ficheiro bloqueado

options/locale/locale_ru-RU.ini

@@ -1156,6 +1156,7 @@ view_git_blame=Показать git blame
 video_not_supported_in_browser=Ваш браузер не поддерживает HTML5 'video' тэг.
 audio_not_supported_in_browser=Ваш браузер не поддерживает HTML5 'audio' тэг.
 stored_lfs=Хранится Git LFS
+stored_annex=Хранится Git Annex
 symbolic_link=Символическая ссылка
 executable_file=Исполняемый файл
 commit_graph=Граф коммитов
@@ -1179,6 +1180,7 @@ editor.upload_file=Загрузить файл
 editor.edit_file=Редактировать файл
 editor.preview_changes=Просмотр изменений
 editor.cannot_edit_lfs_files=LFS файлы невозможно редактировать в веб-интерфейсе.
+editor.cannot_edit_annex_files=Annex файлы невозможно редактировать в веб-интерфейсе.
 editor.cannot_edit_non_text_files=Двоичные файлы нельзя редактировать в веб-интерфейсе.
 editor.edit_this_file=Редактировать файл
 editor.this_file_locked=Файл заблокирован

options/locale/locale_si-LK.ini

@@ -892,6 +892,7 @@ file_copy_permalink=පිටපත් මාමලින්ක්
 video_not_supported_in_browser=ඔබගේ බ්රව්සරය HTML5 'වීඩියෝ' ටැගය සඳහා සහය නොදක්වයි.
 audio_not_supported_in_browser=ඔබගේ බ්රව්සරය HTML5 'ශ්රව්ය' ටැගය සඳහා සහය නොදක්වයි.
 stored_lfs=Git LFS සමඟ ගබඩා
+stored_annex=Git Annex සමඟ ගබඩා
 symbolic_link=සංකේතාත්මක සබැඳිය
 commit_graph=ප්රස්තාරය කැප
 commit_graph.select=ශාඛා තෝරන්න
@@ -909,6 +910,7 @@ editor.upload_file=ගොනුව උඩුගත කරන්න
 editor.edit_file=ගොනුව සංස්කරණය
 editor.preview_changes=වෙනස්කම් පෙරදසුන
 editor.cannot_edit_lfs_files=LFS ගොනු වෙබ් අතුරු මුහුණත තුළ සංස්කරණය කළ නොහැක.
+editor.cannot_edit_annex_files=Annex ගොනු වෙබ් අතුරු මුහුණත තුළ සංස්කරණය කළ නොහැක.
 editor.cannot_edit_non_text_files=ද්විමය ගොනු වෙබ් අතුරු මුහුණත තුළ සංස්කරණය කළ නොහැක.
 editor.edit_this_file=ගොනුව සංස්කරණය
 editor.this_file_locked=ගොනුවට අගුළු ලා ඇත

options/locale/locale_sk-SK.ini

@@ -910,6 +910,7 @@ view_git_blame=Zobraziť Git Blame
 video_not_supported_in_browser=Váš prehliadač nepodporuje HTML5 tag 'video'.
 audio_not_supported_in_browser=Váš prehliadač nepodporuje HTML5 tag 'audio'.
 stored_lfs=Uložené pomocou Git LFS
+stored_annex=Uložené pomocou Git Annex
 symbolic_link=Symbolický odkaz
 commit_graph=Graf commitov