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Merge pull request #305 from Leeingnyo/feature/unzipped-entry

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Support unzipped entry
This commit is contained in:
Alex Ling 2022-06-05 16:23:57 +08:00 committed by GitHub
commit 2d97faa7c0
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13 changed files with 412 additions and 160 deletions
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111
src/library/archive_entry.cr Normal file
View File

@ -0,0 +1,111 @@
require "yaml"
require "./entry"
class ArchiveEntry < Entry
include YAML::Serializable
getter zip_path : String
def initialize(@zip_path, @book)
storage = Storage.default
@path = @zip_path
@encoded_path = URI.encode @zip_path
@title = File.basename @zip_path, File.extname @zip_path
@encoded_title = URI.encode @title
@size = (File.size @zip_path).humanize_bytes
id = storage.get_entry_id @zip_path, File.signature(@zip_path)
if id.nil?
id = random_str
storage.insert_entry_id({
path: @zip_path,
id: id,
signature: File.signature(@zip_path).to_s,
})
end
@id = id
@mtime = File.info(@zip_path).modification_time
unless File.readable? @zip_path
@err_msg = "File #{@zip_path} is not readable."
Logger.warn "#{@err_msg} Please make sure the " \
"file permission is configured correctly."
return
end
archive_exception = validate_archive @zip_path
unless archive_exception.nil?
@err_msg = "Archive error: #{archive_exception}"
Logger.warn "Unable to extract archive #{@zip_path}. " \
"Ignoring it. #{@err_msg}"
return
end
file = ArchiveFile.new @zip_path
@pages = file.entries.count do |e|
SUPPORTED_IMG_TYPES.includes? \
MIME.from_filename? e.filename
end
file.close
end
private def sorted_archive_entries
ArchiveFile.open @zip_path do |file|
entries = file.entries
.select { |e|
SUPPORTED_IMG_TYPES.includes? \
MIME.from_filename? e.filename
}
.sort! { |a, b|
compare_numerically a.filename, b.filename
}
yield file, entries
end
end
def read_page(page_num)
raise "Unreadble archive. #{@err_msg}" if @err_msg
img = nil
begin
sorted_archive_entries do |file, entries|
page = entries[page_num - 1]
data = file.read_entry page
if data
img = Image.new data, MIME.from_filename(page.filename),
page.filename, data.size
end
end
rescue e
Logger.warn "Unable to read page #{page_num} of #{@zip_path}. Error: #{e}"
end
img
end
def page_dimensions
sizes = [] of Hash(String, Int32)
sorted_archive_entries do |file, entries|
entries.each_with_index do |e, i|
begin
data = file.read_entry(e).not_nil!
size = ImageSize.get data
sizes << {
"width" => size.width,
"height" => size.height,
}
rescue e
Logger.warn "Failed to read page #{i} of entry #{zip_path}. #{e}"
sizes << {"width" => 1000_i32, "height" => 1000_i32}
end
end
end
sizes
end
def examine : Bool
File.exists? @zip_path
end
def self.is_valid?(path : String) : Bool
is_supported_file path
end
end

4
src/library/cache.cr
View File

@ -76,7 +76,7 @@ class SortedEntriesCacheEntry < CacheEntry(Array(String), Array(Entry))
entries : Array(Entry), opt : SortOptions?)
entries_sig = Digest::SHA1.hexdigest (entries.map &.id).to_s
user_context = opt && opt.method == SortMethod::Progress ? username : ""
sig = Digest::SHA1.hexdigest (book_id + entries_sig + user_context +
sig = Digest::SHA1.hexdigest(book_id + entries_sig + user_context +
(opt ? opt.to_tuple.to_s : "nil"))
"#{sig}:sorted_entries"
end
@ -101,7 +101,7 @@ class SortedTitlesCacheEntry < CacheEntry(Array(String), Array(Title))
def self.gen_key(username : String, titles : Array(Title), opt : SortOptions?)
titles_sig = Digest::SHA1.hexdigest (titles.map &.id).to_s
user_context = opt && opt.method == SortMethod::Progress ? username : ""
sig = Digest::SHA1.hexdigest (titles_sig + user_context +
sig = Digest::SHA1.hexdigest(titles_sig + user_context +
(opt ? opt.to_tuple.to_s : "nil"))
"#{sig}:sorted_titles"
end

132
src/library/dir_entry.cr Normal file
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@ -0,0 +1,132 @@
require "yaml"
require "./entry"
class DirEntry < Entry
include YAML::Serializable
getter dir_path : String
@[YAML::Field(ignore: true)]
@sorted_files : Array(String)?
@signature : String
def initialize(@dir_path, @book)
storage = Storage.default
@path = @dir_path
@encoded_path = URI.encode @dir_path
@title = File.basename @dir_path
@encoded_title = URI.encode @title
unless File.readable? @dir_path
@err_msg = "Directory #{@dir_path} is not readable."
Logger.warn "#{@err_msg} Please make sure the " \
"file permission is configured correctly."
return
end
unless DirEntry.is_valid? @dir_path
@err_msg = "Directory #{@dir_path} is not valid directory entry."
Logger.warn "#{@err_msg} Please make sure the " \
"directory has valid images."
return
end
size_sum = 0
sorted_files.each do |file_path|
size_sum += File.size file_path
end
@size = size_sum.humanize_bytes
@signature = Dir.directory_entry_signature @dir_path
id = storage.get_entry_id @dir_path, @signature
if id.nil?
id = random_str
storage.insert_entry_id({
path: @dir_path,
id: id,
signature: @signature,
})
end
@id = id
@mtime = sorted_files.map do |file_path|
File.info(file_path).modification_time
end.max
@pages = sorted_files.size
end
def read_page(page_num)
img = nil
begin
files = sorted_files
file_path = files[page_num - 1]
data = File.read(file_path).to_slice
if data
img = Image.new data, MIME.from_filename(file_path),
File.basename(file_path), data.size
end
rescue e
Logger.warn "Unable to read page #{page_num} of #{@dir_path}. Error: #{e}"
end
img
end
def page_dimensions
sizes = [] of Hash(String, Int32)
sorted_files.each_with_index do |path, i|
data = File.read(path).to_slice
begin
data.not_nil!
size = ImageSize.get data
sizes << {
"width" => size.width,
"height" => size.height,
}
rescue e
Logger.warn "Failed to read page #{i} of entry #{@dir_path}. #{e}"
sizes << {"width" => 1000_i32, "height" => 1000_i32}
end
end
sizes
end
def examine : Bool
existence = File.exists? @dir_path
return false unless existence
files = DirEntry.image_files @dir_path
signature = Dir.directory_entry_signature @dir_path
existence = files.size > 0 && @signature == signature
@sorted_files = nil unless existence
# For more efficient, update a directory entry with new property
# and return true like Title.examine
existence
end
def sorted_files
cached_sorted_files = @sorted_files
return cached_sorted_files if cached_sorted_files
@sorted_files = DirEntry.sorted_image_files @dir_path
@sorted_files.not_nil!
end
def self.image_files(dir_path)
Dir.entries(dir_path)
.reject(&.starts_with? ".")
.map { |fn| File.join dir_path, fn }
.select { |fn| is_supported_image_file fn }
.reject { |fn| File.directory? fn }
.select { |fn| File.readable? fn }
end
def self.sorted_image_files(dir_path)
self.image_files(dir_path)
.sort { |a, b| compare_numerically a, b }
end
def self.is_valid?(path : String) : Bool
image_files(path).size > 0
end
end

182
src/library/entry.cr
View File

@ -1,66 +1,55 @@
require "image_size"
require "yaml"
class Entry
include YAML::Serializable
private def node_has_key(node : YAML::Nodes::Mapping, key : String)
node.nodes
.map_with_index { |n, i| {n, i} }
.select(&.[1].even?)
.map(&.[0])
.select(YAML::Nodes::Scalar)
.map(&.as(YAML::Nodes::Scalar).value)
.includes? key
end
getter zip_path : String, book : Title, title : String,
size : String, pages : Int32, id : String, encoded_path : String,
encoded_title : String, mtime : Time, err_msg : String?
abstract class Entry
getter id : String, book : Title, title : String, path : String,
size : String, pages : Int32, mtime : Time,
encoded_path : String, encoded_title : String, err_msg : String?
@[YAML::Field(ignore: true)]
@sort_title : String?
def initialize(@zip_path, @book)
storage = Storage.default
@encoded_path = URI.encode @zip_path
@title = File.basename @zip_path, File.extname @zip_path
@encoded_title = URI.encode @title
@size = (File.size @zip_path).humanize_bytes
id = storage.get_entry_id @zip_path, File.signature(@zip_path)
if id.nil?
id = random_str
storage.insert_entry_id({
path: @zip_path,
id: id,
signature: File.signature(@zip_path).to_s,
})
end
@id = id
@mtime = File.info(@zip_path).modification_time
unless File.readable? @zip_path
@err_msg = "File #{@zip_path} is not readable."
Logger.warn "#{@err_msg} Please make sure the " \
"file permission is configured correctly."
return
def initialize(
@id, @title, @book, @path,
@size, @pages, @mtime,
@encoded_path, @encoded_title, @err_msg
)
end
archive_exception = validate_archive @zip_path
unless archive_exception.nil?
@err_msg = "Archive error: #{archive_exception}"
Logger.warn "Unable to extract archive #{@zip_path}. " \
"Ignoring it. #{@err_msg}"
return
def self.new(ctx : YAML::ParseContext, node : YAML::Nodes::Node)
unless node.is_a? YAML::Nodes::Mapping
raise "Unexpected node type in YAML"
end
file = ArchiveFile.new @zip_path
@pages = file.entries.count do |e|
SUPPORTED_IMG_TYPES.includes? \
MIME.from_filename? e.filename
# Doing YAML::Any.new(ctx, node) here causes a weird error, so
# instead we are using a more hacky approach (see `node_has_key`).
# TODO: Use a more elegant approach
if node_has_key node, "zip_path"
ArchiveEntry.new ctx, node
elsif node_has_key node, "dir_path"
DirEntry.new ctx, node
else
raise "Unknown entry found in YAML cache. Try deleting the " \
"`library.yml.gz` file"
end
file.close
end
def build_json(*, slim = false)
JSON.build do |json|
json.object do
{% for str in %w(zip_path title size id) %}
json.field {{str}}, @{{str.id}}
{% for str in %w(path title size id) %}
json.field {{str}}, {{str.id}}
{% end %}
if err_msg
json.field "err_msg", err_msg
end
json.field "zip_path", path # for API backward compatability
json.field "path", path
json.field "title_id", @book.id
json.field "title_title", @book.title
json.field "sort_title", sort_title
@ -74,6 +63,9 @@ class Entry
end
end
@[YAML::Field(ignore: true)]
@sort_title : String?
def sort_title
sort_title_cached = @sort_title
return sort_title_cached if sort_title_cached
@ -131,58 +123,6 @@ class Entry
url
end
private def sorted_archive_entries
ArchiveFile.open @zip_path do |file|
entries = file.entries
.select { |e|
SUPPORTED_IMG_TYPES.includes? \
MIME.from_filename? e.filename
}
.sort! { |a, b|
compare_numerically a.filename, b.filename
}
yield file, entries
end
end
def read_page(page_num)
raise "Unreadble archive. #{@err_msg}" if @err_msg
img = nil
begin
sorted_archive_entries do |file, entries|
page = entries[page_num - 1]
data = file.read_entry page
if data
img = Image.new data, MIME.from_filename(page.filename),
page.filename, data.size
end
end
rescue e
Logger.warn "Unable to read page #{page_num} of #{@zip_path}. Error: #{e}"
end
img
end
def page_dimensions
sizes = [] of Hash(String, Int32)
sorted_archive_entries do |file, entries|
entries.each_with_index do |e, i|
begin
data = file.read_entry(e).not_nil!
size = ImageSize.get data
sizes << {
"width" => size.width,
"height" => size.height,
}
rescue e
Logger.warn "Failed to read page #{i} of entry #{zip_path}. #{e}"
sizes << {"width" => 1000_i32, "height" => 1000_i32}
end
end
end
sizes
end
def next_entry(username)
entries = @book.sorted_entries username
idx = entries.index self
@ -197,20 +137,6 @@ class Entry
entries[idx - 1]
end
def date_added
date_added = nil
TitleInfo.new @book.dir do |info|
info_da = info.date_added[@title]?
if info_da.nil?
date_added = info.date_added[@title] = ctime @zip_path
info.save
else
date_added = info_da
end
end
date_added.not_nil! # is it ok to set not_nil! here?
end
# For backward backward compatibility with v0.1.0, we save entry titles
# instead of IDs in info.json
def save_progress(username, page)
@ -290,7 +216,7 @@ class Entry
end
Storage.default.save_thumbnail @id, img
rescue e
Logger.warn "Failed to generate thumbnail for file #{@zip_path}. #{e}"
Logger.warn "Failed to generate thumbnail for file #{path}. #{e}"
end
img
@ -299,4 +225,34 @@ class Entry
def get_thumbnail : Image?
Storage.default.get_thumbnail @id
end
def date_added : Time
date_added = Time::UNIX_EPOCH
TitleInfo.new @book.dir do |info|
info_da = info.date_added[@title]?
if info_da.nil?
date_added = info.date_added[@title] = ctime path
info.save
else
date_added = info_da
end
end
date_added
end
# Hack to have abstract class methods
# https://github.com/crystal-lang/crystal/issues/5956
private module ClassMethods
abstract def is_valid?(path : String) : Bool
end
macro inherited
extend ClassMethods
end
abstract def read_page(page_num)
abstract def page_dimensions
abstract def examine : Bool?
end

35
src/library/title.cr
View File

@ -49,13 +49,18 @@ class Title
path = File.join dir, fn
if File.directory? path
title = Title.new path, @id, cache
next if title.entries.size == 0 && title.titles.size == 0
unless title.entries.size == 0 && title.titles.size == 0
Library.default.title_hash[title.id] = title
@title_ids << title.id
end
if DirEntry.is_valid? path
entry = DirEntry.new path, self
@entries << entry if entry.pages > 0 || entry.err_msg
end
next
end
if is_supported_file path
entry = Entry.new path, self
entry = ArchiveEntry.new path, self
@entries << entry if entry.pages > 0 || entry.err_msg
end
end
@ -127,12 +132,12 @@ class Title
previous_entries_size = @entries.size
@entries.select! do |entry|
existence = File.exists? entry.zip_path
existence = entry.examine
Fiber.yield
context["deleted_entry_ids"] << entry.id unless existence
existence
end
remained_entry_zip_paths = @entries.map &.zip_path
remained_entry_paths = @entries.map &.path
is_titles_added = false
is_entries_added = false
@ -140,9 +145,22 @@ class Title
next if fn.starts_with? "."
path = File.join dir, fn
if File.directory? path
unless remained_entry_paths.includes? path
if DirEntry.is_valid? path
entry = DirEntry.new path, self
if entry.pages > 0 || entry.err_msg
@entries << entry
is_entries_added = true
context["deleted_entry_ids"].select! do |deleted_entry_id|
entry.id != deleted_entry_id
end
end
end
end
next if remained_title_dirs.includes? path
title = Title.new path, @id, context["cached_contents_signature"]
next if title.entries.size == 0 && title.titles.size == 0
unless title.entries.size == 0 && title.titles.size == 0
Library.default.title_hash[title.id] = title
@title_ids << title.id
is_titles_added = true
@ -157,12 +175,13 @@ class Title
context["deleted_entry_ids"].select! do |deleted_entry_id|
!(revival_entry_ids.includes? deleted_entry_id)
end
end
next
end
if is_supported_file path
next if remained_entry_zip_paths.includes? path
entry = Entry.new path, self
next if remained_entry_paths.includes? path
entry = ArchiveEntry.new path, self
if entry.pages > 0 || entry.err_msg
@entries << entry
is_entries_added = true
@ -627,7 +646,7 @@ class Title
@entries.each do |e|
next if da.has_key? e.title
da[e.title] = ctime e.zip_path
da[e.title] = ctime e.path
end
TitleInfo.new @dir do |info|

10
src/library/types.cr
View File

@ -1,13 +1,3 @@
SUPPORTED_IMG_TYPES = %w(
image/jpeg
image/png
image/webp
image/apng
image/avif
image/gif
image/svg+xml
)
enum SortMethod
Auto
Title

24
src/routes/api.cr
View File

@ -40,7 +40,7 @@ struct APIRouter
Koa.schema "entry", {
"pages" => Int32,
"mtime" => Int64,
}.merge(s %w(zip_path title size id title_id display_name cover_url)),
}.merge(s %w(zip_path path title size id title_id display_name cover_url)),
desc: "An entry in a book"
Koa.schema "title", {
@ -142,8 +142,13 @@ struct APIRouter
env.response.status_code = 304
""
else
if entry.is_a? DirEntry
cache_control = "no-cache, max-age=86400"
else
cache_control = "public, max-age=86400"
end
env.response.headers["ETag"] = e_tag
env.response.headers["Cache-Control"] = "public, max-age=86400"
env.response.headers["Cache-Control"] = cache_control
send_img env, img
end
rescue e
@ -1138,15 +1143,24 @@ struct APIRouter
entry = title.get_entry eid
raise "Entry ID `#{eid}` of `#{title.title}` not found" if entry.nil?
file_hash = Digest::SHA1.hexdigest (entry.zip_path + entry.mtime.to_s)
if entry.is_a? DirEntry
file_hash = Digest::SHA1.hexdigest(entry.path + entry.mtime.to_s + entry.size)
else
file_hash = Digest::SHA1.hexdigest(entry.path + entry.mtime.to_s)
end
e_tag = "W/#{file_hash}"
if e_tag == prev_e_tag
env.response.status_code = 304
send_text env, ""
else
sizes = entry.page_dimensions
if entry.is_a? DirEntry
cache_control = "no-cache, max-age=86400"
else
cache_control = "public, max-age=86400"
end
env.response.headers["ETag"] = e_tag
env.response.headers["Cache-Control"] = "public, max-age=86400"
env.response.headers["Cache-Control"] = cache_control
send_json env, {
"success" => true,
"dimensions" => sizes,
@ -1172,7 +1186,7 @@ struct APIRouter
title = (Library.default.get_title env.params.url["tid"]).not_nil!
entry = (title.get_entry env.params.url["eid"]).not_nil!
send_attachment env, entry.zip_path
send_attachment env, entry.path
rescue e
Logger.error e
env.response.status_code = 404

1
src/routes/reader.cr
View File

@ -53,6 +53,7 @@ struct ReaderRouter
render "src/views/reader.html.ecr"
rescue e
Logger.error e
Logger.debug e.backtrace?
env.response.status_code = 404
end
end

20
src/util/signature.cr
View File

@ -19,7 +19,7 @@ class File
# information as long as the above changes do not happen together with
# a file/folder rename, with no library scan in between.
def self.signature(filename) : UInt64
if is_supported_file filename
if ArchiveEntry.is_valid?(filename) || is_supported_image_file(filename)
File.info(filename).inode
else
0u64
@ -64,10 +64,11 @@ class Dir
path = File.join dirname, fn
if File.directory? path
signatures << Dir.contents_signature path, cache
signatures << fn if DirEntry.is_valid? path
else
# Only add its signature value to `signatures` when it is a
# supported file
signatures << fn if is_supported_file fn
signatures << fn if ArchiveEntry.is_valid? fn
end
Fiber.yield
end
@ -76,4 +77,19 @@ class Dir
cache[dirname] = hash
hash
end
def self.directory_entry_signature(dirname, cache = {} of String => String)
return cache[dirname + "?entry"] if cache[dirname + "?entry"]?
Fiber.yield
signatures = [] of String
image_files = DirEntry.sorted_image_files dirname
if image_files.size > 0
image_files.each do |path|
signatures << File.signature(path).to_s
end
end
hash = Digest::SHA1.hexdigest(signatures.join)
cache[dirname + "?entry"] = hash
hash
end
end

13
src/util/util.cr
View File

@ -3,6 +3,15 @@ ENTRIES_IN_HOME_SECTIONS = 8
UPLOAD_URL_PREFIX = "/uploads"
STATIC_DIRS = %w(/css /js /img /webfonts /favicon.ico /robots.txt)
SUPPORTED_FILE_EXTNAMES = [".zip", ".cbz", ".rar", ".cbr"]
SUPPORTED_IMG_TYPES = %w(
image/jpeg
image/png
image/webp
image/apng
image/avif
image/gif
image/svg+xml
)
def random_str
UUID.random.to_s.gsub "-", ""
@ -49,6 +58,10 @@ def is_supported_file(path)
SUPPORTED_FILE_EXTNAMES.includes? File.extname(path).downcase
end
def is_supported_image_file(path)
SUPPORTED_IMG_TYPES.includes? MIME.from_filename? path
end
struct Int
def or(other : Int)
if self == 0

2
src/views/opds/title.xml.ecr
View File

@ -29,7 +29,7 @@
<link rel="http://opds-spec.org/image" href="<%= e.cover_url %>" />
<link rel="http://opds-spec.org/image/thumbnail" href="<%= e.cover_url %>" />
<link rel="http://opds-spec.org/acquisition" href="<%= base_url %>api/download/<%= e.book.id %>/<%= e.id %>" title="Read" type="<%= MIME.from_filename e.zip_path %>" />
<link rel="http://opds-spec.org/acquisition" href="<%= base_url %>api/download/<%= e.book.id %>/<%= e.id %>" title="Read" type="<%= MIME.from_filename e.path %>" />
<link type="text/html" rel="alternate" title="Read in Mango" href="<%= base_url %>reader/<%= e.book.id %>/<%= e.id %>" />
<link type="text/html" rel="alternate" title="Open in Mango" href="<%= base_url %>book/<%= e.book.id %>" />

2
src/views/reader-error.html.ecr
View File

@ -5,7 +5,7 @@
<div>
<h3 class="uk-modal-title uk-margin-remove-top">Error</h3>
</div>
<p class="uk-text-meta uk-margin-remove-bottom"><%= entry.zip_path %></p>
<p class="uk-text-meta uk-margin-remove-bottom"><%= entry.path %></p>
<p class="uk-text-meta uk-margin-remove-top"><%= entry.err_msg %></p>
</div>
<div class="uk-modal-body">

2
src/views/reader.html.ecr
View File

@ -67,7 +67,7 @@
<button class="uk-modal-close-default" type="button" uk-close></button>
<div class="uk-modal-header">
<h3 class="uk-modal-title break-word"><%= entry.display_name %></h3>
<p class="uk-text-meta uk-margin-remove-bottom break-word"><%= entry.zip_path %></p>
<p class="uk-text-meta uk-margin-remove-bottom break-word"><%= entry.path %></p>
</div>
<div class="uk-modal-body">
<div class="uk-margin">