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DERB

Section: ICU 58.2 Manual (1)
Updated: 7 Mar 2014
Index Return to Main Contents

NAME

derb - disassemble a resource bundle

SYNOPSIS

derb [ -h, -?, --help ] [ -V, --version ] [ -v, --verbose ] [ -e, --encoding encoding ] [ --bom ] [ -t, --truncate [ size ] ] [ -s, --sourcedir source ] [ -d, --destdir destination ] [ -i, --icudatadir directory ] [ -c, --to-stdout ] bundle ...

DESCRIPTION

derb reads the compiled resource bundle files passed on the command line and write them back in text form. The resulting text files have a .txt extension while compiled resource bundle source files typically have a .res extension.

It is customary to name the resource bundles by their locale name, i.e. to use a local identifier for the bundle filename, e.g. ja_JP.res for Japanese (Japan) data, or root.res for the root bundle. This is especially important for derb since the locale name is not accessible directly from the compiled resource bundle, and to know which locale to ask for when opening the bundle. derb will produce a file whose base name is the base name of the compiled resource file itself. If the --to-stdout, -c option is used, however, the text will be written on the standard output.

OPTIONS

-h, -?, --help: Print help about usage and exit.
-V, --version: Print the version of derb and exit.
-v, --verbose: Display extra informative messages during execution.
-A, --suppressAliases: Don't follow aliases when producing output.
-e, --encoding encoding: Set the encoding used to write output files to encoding. The default encoding is the invariant (subset of ASCII or EBCDIC) codepage for the system (see section INVARIANT CHARACTERS). The choice of the encoding does not affect the data, just their representation. Characters that cannot be represented in the encoding will be represented using \uhhhh escape sequences.
--bom: Write a byte order mark (BOM) at the beginning of the file.
-l, --locale locale: Set the locale for the resource bundle, which is used both in the generated text and as the base name of the output file.
-t, --truncate [ size ]: Truncate individual resources (strings or binary data) to size bytes. The default if size is not specified is 80 bytes.
-s, --sourcedir source: Set the source directory to source. The default source directory is the current directory. If - is passed for source, then the bundle will be looked for in its default location, specified by the ICU_DATA environment variable (or defaulting to the location set when ICU was built if ICU_DATA is not set).
-d, --destdir destination: Set the destination directory to destination. The default destination directory is specified by the environment variable ICU_DATA or is the location set when ICU was built if ICU_DATA is not set.
-i, --icudatadir directory: Look for any necessary ICU data files in directory. For example, when processing collation overrides, the file ucadata.dat must be located. The default ICU data directory is specified by the environment variable ICU_DATA.
-c, --to-stdout: Write the disassembled bundle on standard output instead of into a file.

CAVEATS

When the option --bom is used, the character U+FEFF is written in the destination encoding regardless of whether it is a Unicode transformation format (UTF) or not. This option should only be used with an UTF encoding, as byte order marks are not meaningful for other encodings.

INVARIANT CHARACTERS

The invariant character set consists of the following set of characters, expressed as a standard POSIX regular expression: [a-z]|[A-Z]|[0-9]|_| |+|-|*|/. This is the set which is guaranteed to be available regardless of code page.

ENVIRONMENT

ICU_DATA: Specifies the directory containing ICU data. Defaults to /usr/share/icu/58.2/. Some tools in ICU depend on the presence of the trailing slash. It is thus important to make sure that it is present if ICU_DATA is set.