john-okeefe
bb3c32c59f
- Add internal/sync package with format detection - FormatGroup types: reflowable, fixed_layout, comic_archive - DetectFormatGroup() function based on mimetype and file extension - MimeType mappings for common ebook formats - Progress conversion engine with: - ConvertProgress() between format groups - Extract percentage from various progress formats - PageToPercentage / PercentageToPage helpers - CharacterToPercentage / PercentageToCharacter helpers - MergeProgress() with 'max progress wins' strategy - FormatProgressForDisplay() for UI rendering - Add sqlc queries for format detection and progress updates - BulkUpdateFormatGroups query for auto-format detection - GetUniversalProgress query with all location references - UpdateUniversalProgress query with device sync metadata - ReadingHistory queries for session tracking
133 lines
3.2 KiB
Go
133 lines
3.2 KiB
Go
package sync
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import (
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"path/filepath"
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"strings"
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)
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// FormatGroup represents the three main format categories
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type FormatGroup string
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const (
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FormatGroupReflowable FormatGroup = "reflowable"
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FormatGroupFixedLayout FormatGroup = "fixed_layout"
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FormatGroupComicArchive FormatGroup = "comic_archive"
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FormatGroupUnknown FormatGroup = "unknown"
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)
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// MimeType mappings for common ebook formats
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var mimeTypes = map[string]string{
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".epub": "application/epub+zip",
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".mobi": "application/x-mobipocket-ebook",
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".azw": "application/x-mobipocket-ebook",
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".azw3": "application/vnd.amazon.mobi8-ebook",
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".pdf": "application/pdf",
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".djvu": "image/vnd.djvu",
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".cbz": "application/x-cbz",
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".cbr": "application/x-cbr",
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".cb7": "application/x-cb7",
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".cbt": "application/x-cbt",
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".fb2": "application/x-fictionbook+xml",
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".txt": "text/plain",
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".rtf": "application/rtf",
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".doc": "application/msword",
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".docx": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
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".lit": "application/x-ms-reader",
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".pdb": "application/vnd.palm",
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".prc": "application/vnd.palm",
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}
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// ReflowableFormats are formats that support text reflow
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var ReflowableFormats = map[string]bool{
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".epub": true,
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".mobi": true,
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".azw": true,
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".azw3": true,
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".fb2": true,
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".txt": true,
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".rtf": true,
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".doc": true,
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".docx": true,
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".lit": true,
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".pdb": true,
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".prc": true,
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}
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// FixedLayoutFormats are formats with fixed page layouts
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var FixedLayoutFormats = map[string]bool{
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".pdf": true,
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".djvu": true,
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}
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// ComicArchiveFormats are comic archive formats
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var ComicArchiveFormats = map[string]bool{
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".cbz": true,
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".cbr": true,
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".cb7": true,
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".cbt": true,
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}
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// DetectFormatGroup determines the format group based on mimetype and file path
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func DetectFormatGroup(mimetype string, filePath string) FormatGroup {
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ext := strings.ToLower(filepath.Ext(filePath))
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// Check by mimetype first
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switch mimetype {
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case "application/epub+zip",
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"application/x-mobipocket-ebook",
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"application/vnd.amazon.mobi8-ebook",
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"application/x-fictionbook+xml",
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"text/plain":
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return FormatGroupReflowable
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case "application/pdf",
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"image/vnd.djvu":
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return FormatGroupFixedLayout
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case "application/x-cbr",
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"application/x-cbz",
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"application/x-cb7",
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"application/x-cbt":
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return FormatGroupComicArchive
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}
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// Fall back to file extension
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if ReflowableFormats[ext] {
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return FormatGroupReflowable
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}
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if FixedLayoutFormats[ext] {
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return FormatGroupFixedLayout
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}
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if ComicArchiveFormats[ext] {
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return FormatGroupComicArchive
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}
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return FormatGroupUnknown
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}
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// GetMimeType returns the mimetype for a given file extension
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func GetMimeType(filePath string) string {
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ext := strings.ToLower(filepath.Ext(filePath))
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if mt, ok := mimeTypes[ext]; ok {
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return mt
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}
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return ""
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}
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// IsReflowable checks if a format is reflowable
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func IsReflowable(formatGroup FormatGroup) bool {
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return formatGroup == FormatGroupReflowable
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}
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// HasFixedLayout checks if a format has fixed layout
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func HasFixedLayout(formatGroup FormatGroup) bool {
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return formatGroup == FormatGroupFixedLayout
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}
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// IsComicArchive checks if a format is a comic archive
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func IsComicArchive(formatGroup FormatGroup) bool {
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return formatGroup == FormatGroupComicArchive
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}
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