Originální popis anglicky:
gencat - generate a formatted message catalog
Návod, kniha: POSIX Programmer's Manual
gencat catfile msgfile...
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 messages 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.
None.
The following operands shall be supported:
- catfile
- A pathname of the formatted message catalog. If '-'
is specified, 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.
The standard input shall not be used unless a
msgfile operand is
specified as
'-' .
The input files shall be text files.
The following environment variables shall affect the execution of
gencat:
- 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
Variables for the precedence of internationalization variables used to
determine the values of locale categories.)
- LC_ALL
- If set to a non-empty string value, override the values of
all the other internationalization variables.
- LC_CTYPE
- 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).
- LC_MESSAGES
- 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 LC_MESSAGES .
Default.
The standard output shall not be used unless the
catfile operand is
specified as
'-' .
The standard error shall be used only for diagnostic messages.
None.
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 separated by a single
<blank>. Any other <blank>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, {NL_SETMAX}]
(see the <limits.h> header defined in the Base Definitions
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 comment. If no $set directive
is specified in a message text source file, all messages shall be located
in an implementation-defined default message set NL_SETD (see the
<nl_types.h> 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 catalog. The
n denotes the set number [1, {NL_SETMAX}]. Any string following the
set number shall be treated as a comment.
- $ comment
- A line beginning with '$' followed by a
<blank> shall be treated as a comment.
- m message-text
-
The m denotes the message identifier, which is defined as a number in
the range [1, {NL_MSGMAX}] (see the <limits.h> 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
<blank> 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,
{NL_TEXTMAX}] (see the <limits.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 |
| <newline> |
NL(LF) |
\n |
| Horizontal-tab |
HT |
\t |
| <vertical-tab> |
VT |
\v |
| <backspace> |
BS |
\b |
| <carriage-return> |
CR |
\r |
| <form-feed> |
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 <newline> 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
The following exit values shall be returned:
- 0
- Successful completion.
- >0
- An error occurred.
Default.
The following sections are informative.
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.
None.
None.
None.
iconv() , the Base Definitions volume of
IEEE Std 1003.1-2001,
<limits.h>,
<nl_types.h>
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
.
