formatLine applies padding to a single line so its comment starts at a target column.

generateDocumentPreview generates preview for PDF and document files

generateHEICPreview generates preview for HEIC files using FFmpeg

generateIconSizes generates all required icon sizes from source PNG data

generateImagePreview generates preview for regular image files

generateOfficeFilePreview generates preview for Office files via OnlyOffice

generatePWAManifest creates the PWA manifest structure

generateRawPreview generates the initial preview image bytes based on file type

generateSingleIcon generates a single icon file at the specified size

generateVideoPreviewBytes generates preview frame from video file

getActiveScannerPath returns the path of the currently active scanner, or empty string if none Assumes mutex is NOT held - will acquire its own lock

getBasicDirInfo returns just directory metadata without children

* Get default icon for toast type * @param {'success' | 'error' | 'info' | 'warning'} type * @returns {string}

getDirInfoFromContext gets full directory info using PathContext

getDirectoryPreview returns the previewable file at the given frame index (0–3) for motion preview. atPercentage maps to frame: 0→0, 1–25→1, 26–50→2,

getDiskUsage returns the actual disk space used by a file in bytes This is a simplified helper for shallow calculations and API calls For scanning wit

getFileInfoFromContext returns info for a single file

getFileSizeByMode returns file size based on config mode Centralizes the logic for choosing between disk usage and logical size

getIconSizesToGenerate returns all icon sizes that need to be generated

Helper function to get field names (copied from bolt/users.go for testing)

Helper to return list of field names from NonAdminEditable struct

getOrCreateLdapUser returns the filebrowser user for an LDAP-authenticated username, creating one if configured.

getRuleAtExactPath is a helper to get a rule without the recursive logic.

* Load sidebar width from localStorage or use default size * @returns {number}

getStringStyle determines whether a string should be quoted in YAML

getYamlFieldName determines the YAML field name from struct tags

groupFilesByChecksum groups files by partial checksum and returns groups with their checksums

groupFilesByFilename groups files by fuzzy filename matching Works with iteminfo.FileInfo from the main IndexDB Normalizes filenames on-the-fly for co

groupFilesByType groups files by MIME type Assumes files are already sorted by type (from SQL ORDER BY)

handleRasterFavicon processes a raster favicon (PNG, JPEG, GIF, WebP, etc.)

handleSVGFavicon processes an SVG favicon by finding its raster companion

hasAlbumArtFLACOptimized checks for PICTURE metadata block (type 6) in FLAC files

hasAlbumArtLowLevel efficiently checks for album art in audio files. It handles ID3v2 tags (MP3) and Vorbis comments (FLAC, OGG) with low-level parsin

hasAlbumArtM4A checks for embedded artwork in M4A/MP4 files

hasAlbumArtMP3Optimized checks for APIC/PIC frames with minimal I/O Takes the 10-byte header already read and reads only the necessary tag data

hasAlbumArtOGGOptimized checks for METADATA_BLOCK_PICTURE in OGG Vorbis comments

hasBundleExtension checks if a file has a known bundle-style extension.

hasEmbeddedPreview reports whether we should try exiftool for an embedded preview. Only true for types that often have one and lack a cheap native dec

identifyDeprecatedFieldsByReflection identifies deprecated fields by known field names

incrementScannerDirsUnlocked increments the directory counter for the active scanner

isDirectoryOnFilesystem checks if the path exists and is a directory on the filesystem

isFileOnFilesystem checks if the path exists and is a file on the filesystem

isOnlyOfficeCompatibleFile checks if a file extension is supported by OnlyOffice

levenshteinDistance calculates the edit distance between two strings

loadFaviconSource loads and prepares the favicon source data as PNG Returns PNG data ready for resizing into icon sizes

* Load notification history from sessionStorage * @returns {Array}

loginWithOidcUser extracts the username from the user claims (userInfo) based on the configured UserIdentifier and logs the user into the application.

manifestHandler serves the cached PWA manifest

markFilesChanged marks that files have changed in the currently active scanner

max returns the maximum of two integers

measureAuthTime measures the time taken to authenticate with given credentials

mergeConfig merges the provided config with defaults, returning a new config. If provided config is nil or empty, returns default config.

mergeGroupsByChecksum merges groups that share any checksum values This catches cases where files have identical content but were grouped separately

migrateAccessRule creates a new access rule with the new path format

migrateOldCacheStructure moves cache files from old structure (dir/a/...) to new structure (dir/diskcache/a/...)

min returns the minimum of three integers

mockCheckPermissions mocks the CheckPermissions function to bypass index lookups

mockWebDAVIndexing mocks the indexing system for WebDAV tests

Modify newHTTPRequest to accept the hash and use it in the URL path.

Helper function to create a new HTTP request with optional parameters

nonAdminEditableFieldNameSet returns User.NonAdminEditable struct field names (e.g. "Locale", "Preview").

normalizeLocale converts various locale formats (xx_xx, xx-xx, xxxx) to camelCase format (xxXX) Frontend expects camelCase for compound locales (zhCN,

normalizeScope ensures scope starts with / and doesn't end with / (except for root)

parseDirGoFiles parses all .go files in dir and returns their ASTs. Used when the directory is not inside a Go module (e.g. test temp dirs) so package