305 lines
9.5 KiB
Go
305 lines
9.5 KiB
Go
// +build !noencode
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package encodings
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import (
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"runtime"
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"strings"
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"github.com/rclone/rclone/lib/encoder"
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)
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// Base only encodes the zero byte and slash
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const Base = encoder.MultiEncoder(
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encoder.EncodeZero |
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encoder.EncodeSlash)
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// Display is the internal encoding for logging and output
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const Display = encoder.Standard
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// LocalUnix is the encoding used by the local backend for non windows platforms
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const LocalUnix = Base
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// LocalWindows is the encoding used by the local backend for windows platforms
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//
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// List of replaced characters:
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// < (less than) -> '＜' // FULLWIDTH LESS-THAN SIGN
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// > (greater than) -> '＞' // FULLWIDTH GREATER-THAN SIGN
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// : (colon) -> '：' // FULLWIDTH COLON
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// " (double quote) -> '＂' // FULLWIDTH QUOTATION MARK
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// \ (backslash) -> '＼' // FULLWIDTH REVERSE SOLIDUS
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// | (vertical line) -> '｜' // FULLWIDTH VERTICAL LINE
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// ? (question mark) -> '？' // FULLWIDTH QUESTION MARK
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// * (asterisk) -> '＊' // FULLWIDTH ASTERISK
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//
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// Additionally names can't end with a period (.) or space ( ).
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// List of replaced characters:
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// . (period) -> '．' // FULLWIDTH FULL STOP
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// (space) -> '␠' // SYMBOL FOR SPACE
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//
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// Also encode invalid UTF-8 bytes as Go can't convert them to UTF-16.
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//
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// https://docs.microsoft.com/de-de/windows/desktop/FileIO/naming-a-file#naming-conventions
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const LocalWindows = encoder.MultiEncoder(
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uint(Base) |
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encoder.EncodeWin |
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encoder.EncodeBackSlash |
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encoder.EncodeCtl |
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encoder.EncodeRightSpace |
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encoder.EncodeRightPeriod |
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encoder.EncodeInvalidUtf8)
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// AmazonCloudDrive is the encoding used by the amazonclouddrive backend
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//
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// Encode invalid UTF-8 bytes as json doesn't handle them properly.
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const AmazonCloudDrive = encoder.MultiEncoder(
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uint(Base) |
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encoder.EncodeInvalidUtf8)
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// B2 is the encoding used by the b2 backend
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//
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// See: https://www.backblaze.com/b2/docs/files.html
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// Encode invalid UTF-8 bytes as json doesn't handle them properly.
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// FIXME: allow /, but not leading, trailing or double
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const B2 = encoder.MultiEncoder(
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uint(Display) |
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encoder.EncodeBackSlash |
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encoder.EncodeInvalidUtf8)
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// Box is the encoding used by the box backend
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//
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// From https://developer.box.com/docs/error-codes#section-400-bad-request :
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// > Box only supports file or folder names that are 255 characters or less.
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// > File names containing non-printable ascii, "/" or "\", names with leading
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// > or trailing spaces, and the special names “.” and “..” are also unsupported.
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//
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// Testing revealed names with leading spaces work fine.
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// Also encode invalid UTF-8 bytes as json doesn't handle them properly.
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const Box = encoder.MultiEncoder(
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uint(Display) |
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encoder.EncodeBackSlash |
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encoder.EncodeRightSpace |
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encoder.EncodeInvalidUtf8)
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// Drive is the encoding used by the drive backend
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//
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// Encode invalid UTF-8 bytes as json doesn't handle them.
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// Don't encode / as it's a valid name character in drive.
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const Drive = encoder.MultiEncoder(
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encoder.EncodeInvalidUtf8)
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// Dropbox is the encoding used by the dropbox backend
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//
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// https://www.dropbox.com/help/syncing-uploads/files-not-syncing lists / and \
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// as invalid characters.
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// Testing revealed names with trailing spaces and the DEL character don't work.
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// Also encode invalid UTF-8 bytes as json doesn't handle them properly.
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const Dropbox = encoder.MultiEncoder(
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uint(Base) |
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encoder.EncodeBackSlash |
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encoder.EncodeDel |
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encoder.EncodeRightSpace |
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encoder.EncodeInvalidUtf8)
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// GoogleCloudStorage is the encoding used by the googlecloudstorage backend
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const GoogleCloudStorage = encoder.MultiEncoder(
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uint(Base) |
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//encoder.EncodeCrLF |
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encoder.EncodeInvalidUtf8)
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// JottaCloud is the encoding used by the jottacloud backend
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//
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// Encode invalid UTF-8 bytes as xml doesn't handle them properly.
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//
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// Also: '*', '/', ':', '<', '>', '?', '\"', '\x00', '|'
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const JottaCloud = encoder.MultiEncoder(
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uint(Display) |
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encoder.EncodeWin | // :?"*<>|
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encoder.EncodeInvalidUtf8)
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// Koofr is the encoding used by the koofr backend
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//
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// Encode invalid UTF-8 bytes as json doesn't handle them properly.
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const Koofr = encoder.MultiEncoder(
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uint(Display) |
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encoder.EncodeBackSlash |
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encoder.EncodeInvalidUtf8)
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// Mega is the encoding used by the mega backend
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//
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// Encode invalid UTF-8 bytes as json doesn't handle them properly.
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const Mega = encoder.MultiEncoder(
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uint(Base) |
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encoder.EncodeInvalidUtf8)
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// OneDrive is the encoding used by the onedrive backend
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//
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// List of replaced characters:
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// < (less than) -> '＜' // FULLWIDTH LESS-THAN SIGN
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// > (greater than) -> '＞' // FULLWIDTH GREATER-THAN SIGN
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// : (colon) -> '：' // FULLWIDTH COLON
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// " (double quote) -> '＂' // FULLWIDTH QUOTATION MARK
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// \ (backslash) -> '＼' // FULLWIDTH REVERSE SOLIDUS
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// | (vertical line) -> '｜' // FULLWIDTH VERTICAL LINE
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// ? (question mark) -> '？' // FULLWIDTH QUESTION MARK
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// * (asterisk) -> '＊' // FULLWIDTH ASTERISK
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// # (number sign) -> '＃' // FULLWIDTH NUMBER SIGN
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// % (percent sign) -> '％' // FULLWIDTH PERCENT SIGN
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//
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// Folder names cannot begin with a tilde ('~')
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// List of replaced characters:
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// ~ (tilde) -> '～' // FULLWIDTH TILDE
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//
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// Additionally names can't begin with a space ( ) or end with a period (.) or space ( ).
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// List of replaced characters:
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// . (period) -> '．' // FULLWIDTH FULL STOP
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// (space) -> '␠' // SYMBOL FOR SPACE
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//
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// Also encode invalid UTF-8 bytes as json doesn't handle them.
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//
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// The OneDrive API documentation lists the set of reserved characters, but
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// testing showed this list is incomplete. This are the differences:
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// - " (double quote) is rejected, but missing in the documentation
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// - space at the end of file and folder names is rejected, but missing in the documentation
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// - period at the end of file names is rejected, but missing in the documentation
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//
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// Adding these restrictions to the OneDrive API documentation yields exactly
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// the same rules as the Windows naming conventions.
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//
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// https://docs.microsoft.com/en-us/onedrive/developer/rest-api/concepts/addressing-driveitems?view=odsp-graph-online#path-encoding
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const OneDrive = encoder.MultiEncoder(
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uint(Display) |
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encoder.EncodeBackSlash |
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encoder.EncodeHashPercent |
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encoder.EncodeLeftSpace |
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encoder.EncodeLeftTilde |
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encoder.EncodeRightPeriod |
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encoder.EncodeRightSpace |
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encoder.EncodeWin |
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encoder.EncodeInvalidUtf8)
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// OpenDrive is the encoding used by the opendrive backend
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//
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// List of replaced characters:
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// < (less than) -> '＜' // FULLWIDTH LESS-THAN SIGN
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// > (greater than) -> '＞' // FULLWIDTH GREATER-THAN SIGN
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// : (colon) -> '：' // FULLWIDTH COLON
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// " (double quote) -> '＂' // FULLWIDTH QUOTATION MARK
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// \ (backslash) -> '＼' // FULLWIDTH REVERSE SOLIDUS
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// | (vertical line) -> '｜' // FULLWIDTH VERTICAL LINE
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// ? (question mark) -> '？' // FULLWIDTH QUESTION MARK
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// * (asterisk) -> '＊' // FULLWIDTH ASTERISK
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//
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// Additionally names can't begin or end with a ASCII whitespace.
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// List of replaced characters:
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// (space) -> '␠' // SYMBOL FOR SPACE
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// (horizontal tab) -> '␉' // SYMBOL FOR HORIZONTAL TABULATION
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// (line feed) -> '␊' // SYMBOL FOR LINE FEED
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// (vertical tab) -> '␋' // SYMBOL FOR VERTICAL TABULATION
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// (carriage return) -> '␍' // SYMBOL FOR CARRIAGE RETURN
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//
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// Also encode invalid UTF-8 bytes as json doesn't handle them properly.
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//
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// https://www.opendrive.com/wp-content/uploads/guides/OpenDrive_API_guide.pdf
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const OpenDrive = encoder.MultiEncoder(
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uint(Base) |
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encoder.EncodeWin |
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encoder.EncodeLeftCrLfHtVt |
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encoder.EncodeRightCrLfHtVt |
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encoder.EncodeBackSlash |
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encoder.EncodeLeftSpace |
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encoder.EncodeRightSpace |
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encoder.EncodeInvalidUtf8)
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// Pcloud is the encoding used by the pcloud backend
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//
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// Encode invalid UTF-8 bytes as json doesn't handle them properly.
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//
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// TODO: Investigate Unicode simplification (＼ gets converted to \ server-side)
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const Pcloud = encoder.MultiEncoder(
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uint(Base) |
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encoder.EncodeInvalidUtf8)
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// ByName returns the encoder for a give backend name or nil
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func ByName(name string) encoder.Encoder {
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switch strings.ToLower(name) {
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case "base":
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return Base
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case "display":
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return Display
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case "amazonclouddrive":
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return AmazonCloudDrive
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//case "azureblob":
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case "b2":
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return B2
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case "box":
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return Box
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//case "cache":
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case "drive":
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return Drive
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case "dropbox":
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return Dropbox
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//case "ftp":
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case "googlecloudstorage":
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return GoogleCloudStorage
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//case "http":
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//case "hubic":
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case "jottacloud":
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return JottaCloud
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case "koofr":
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return Koofr
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case "local":
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return Local()
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case "local-windows", "windows":
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return LocalWindows
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case "local-unix", "unix":
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return LocalUnix
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case "mega":
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return Mega
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case "onedrive":
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return OneDrive
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case "opendrive":
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return OpenDrive
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case "pcloud":
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return Pcloud
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//case "qingstor":
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//case "s3":
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//case "sftp":
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//case "swift":
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//case "webdav":
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//case "yandex":
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default:
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return nil
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}
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}
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// Local returns the local encoding for the current platform
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func Local() encoder.MultiEncoder {
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if runtime.GOOS == "windows" {
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return LocalWindows
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}
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return LocalUnix
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}
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// Names returns the list of known encodings as accepted by ByName
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func Names() []string {
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return []string{
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"base",
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"display",
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"amazonclouddrive",
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"b2",
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"box",
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"drive",
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"dropbox",
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"googlecloudstorage",
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"jottacloud",
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"koofr",
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"local-unix",
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"local-windows",
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"local",
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"mega",
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"onedrive",
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"opendrive",
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"pcloud",
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}
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}
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