Manual Pages for Linux CentOS command on man gencat

GENCAT(1P) POSIX Programmer's Manual GENCAT(1P)

PROLOG This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux. NAME

gencat - generate a formatted message catalog SYNOPSIS gencat catfile msgfile... DESCRIPTION The gencat utility shall merge the message text source file msgfile into a formatted message catalog catfile. The file catfile shall be created if it does not already exist. If catfile does exist, its mes‐ sages shall be included in the new catfile. If set and message numbers collide, the new message text defined in msgfile shall replace the old message text currently contained in catfile. OPTIONS None. OPERANDS The following operands shall be supported: catfile

A pathname of the formatted message catalog. If '-' is speci‐ fied, standard output shall be used. The format of the message catalog produced is unspecified. msgfile

A pathname of a message text source file. If '-' is specified for an instance of msgfile, standard input shall be used. The format of message text source files is defined in the EXTENDED DESCRIPTION section. STDIN The standard input shall not be used unless a msgfile operand is speci‐

fied as '-' . INPUT FILES The input files shall be text files. ENVIRONMENT VARIABLES The following environment variables shall affect the execution of gen‐ cat: LANG Provide a default value for the internationalization variables that are unset or null. (See the Base Definitions volume of

IEEE Std 1003.1-2001, Section 8.2, Internationalization Vari‐ ables for the precedence of internationalization variables used to determine the values of locale categories.)

LCALL If set to a non-empty string value, override the values of all the other internationalization variables. LCCTYPE Determine the locale for the interpretation of sequences of

bytes of text data as characters (for example, single-byte as

opposed to multi-byte characters in arguments and input files). LCMESSAGES Determine the locale that should be used to affect the format and contents of diagnostic messages written to standard error. NLSPATH Determine the location of message catalogs for the processing of LCMESSAGES . ASYNCHRONOUS EVENTS Default. STDOUT The standard output shall not be used unless the catfile operand is

specified as '-' . STDERR The standard error shall be used only for diagnostic messages. OUTPUT FILES None. EXTENDED DESCRIPTION The content of a message text file shall be in the format defined as follows. Note that the fields of a message text source line are sepa‐ rated by a single . Any other s are considered to be part of the subsequent field.

$set n comment This line specifies the set identifier of the following messages

until the next $set or end-of-file appears. The n denotes the set identifier, which is defined as a number in the range [1, {NLSETMAX}] (see the header defined in the Base Def‐

initions volume of IEEE Std 1003.1-2001). The application shall ensure that set identifiers are presented in ascending order within a single source file, but need not be contiguous. Any string following the set identifier shall be treated as a com‐

ment. If no $set directive is specified in a message text source

file, all messages shall be located in an implementation-defined default message set NLSETD (see the header defined

in the Base Definitions volume of IEEE Std 1003.1-2001).

$delset n comment This line deletes message set n from an existing message cata‐ log. The n denotes the set number [1, {NLSETMAX}]. Any string following the set number shall be treated as a comment.

$ comment

A line beginning with '$' followed by a shall be treated as a comment.

m message-text The m denotes the message identifier, which is defined as a num‐ ber in the range [1, {NLMSGMAX}] (see the header).

The message-text shall be stored in the message catalog with the

set identifier specified by the last $set directive, and with

message identifier m. If the message-text is empty, and a field separator is present, an empty string shall be stored in the message catalog. If a message source line has a

message number, but neither a field separator nor message-text, the existing message with that number (if any) shall be deleted from the catalog. The application shall ensure that message identifiers are in ascending order within a single set, but need not be contiguous. The application shall ensure that the length

of message-text is in the range [0, {NLTEXTMAX}] (see the its.h> header).

$quote n This line specifies an optional quote character c, which can be

used to surround message-text so that trailing spaces or null (empty) messages are visible in a message source line. By

default, or if an empty $quote directive is supplied, no quoting

of message-text shall be recognized. Empty lines in a message text source file shall be ignored. The effects of lines starting with any character other than those defined above are

implementation-defined. Text strings can contain the special characters and escape sequences defined in the following table: Description Symbol Sequence NL(LF) \n

Horizontal-tab HT \t

VT \v BS \b

CR \r

FF \f Backslash \ \\ Bit pattern ddd \ddd The escape sequence "\ddd" consists of backslash followed by one, two, or three octal digits, which shall be taken to specify the value of the desired character. If the character following a backslash is not one of those specified, the backslash shall be ignored. Backslash ( '\' ) followed by a is also used to continue a string on the following line. Thus, the following two lines describe a single message string: 1 This line continues \ to the next line which shall be equivalent to: 1 This line continues to the next line EXIT STATUS The following exit values shall be returned: 0 Successful completion. >0 An error occurred. CONSEQUENCES OF ERRORS Default. The following sections are informative. APPLICATION USAGE Message catalogs produced by gencat are binary encoded, meaning that their portability cannot be guaranteed between different types of machine. Thus, just as C programs need to be recompiled for each type of machine, so message catalogs must be recreated via gencat. EXAMPLES None. RATIONALE None. FUTURE DIRECTIONS None. SEE ALSO

iconv(), the Base Definitions volume of IEEE Std 1003.1-2001, its.h>, COPYRIGHT Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology Portable Operating System Interface (POSIX), The Open Group Base

Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html . IEEE/The Open Group 2003 GENCAT(1P)