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OpenSolaris 2009.06 - man page for genmsg (opensolaris section 1)

genmsg(1)				  User Commands 				genmsg(1)

NAME
       genmsg - generate a message source file by extracting messages from source files

SYNOPSIS
       genmsg [-abdfrntx] [-c message-tag] [-g project-file]
	    [-l project-file] [-m prefix] [-M suffix]
	    [-o message-file] [-p preprocessor] [-s set-tags]  file...

DESCRIPTION
       The  genmsg  utility  extracts message strings with calls to catgets(3C) from source files
       and writes them in a format suitable for input to gencat(1).

   Invocation
       genmsg reads one or more input files and, by default,  generates  a  message  source  file
       whose  name is composed of the first input file name with .msg. If the -o option is speci-
       fied, genmsg uses the option argument for its output file.

       +-------------------------------------+---------------------+
       |Command 			     | Output File	   |
       +-------------------------------------+---------------------+
       |genmsg prog.c			     | prog.c.msg	   |
       |gensmg main.c util.c tool.c	     | main.c.msg	   |
       |genmsg -o prog.msg mail.c util.c     | prog.msg 	   |
       +-------------------------------------+---------------------+

       genmsg also allows you to invoke a preprocessor to solve the dependencies  of  macros  and
       define statements for the catgets(3C) calls.

   Auto Message Numbering
       genmsg replaces message numbers with the calculated numbers based upon the project file if
       the message numbers are -1, and it generates copies of the input files with the	new  mes-
       sage numbers and a copy of the project file with the new maximum message numbers.

       A  project file is a database that stores a list of set numbers with their maximum message
       numbers. Each line in a project file is composed of a set number and its  maximum  message
       number:

       Set_number    Maximum_message_number

       In a project file, a line beginning with a number sign (#) or an ASCII space is considered
       as a comment and ignored.

       genmsg also has the reverse operation to replace all message numbers with -1.

   Comment Extraction
       genmsg allows you to comment about messages and set numbers to inform the  translator  how
       the  messages  should be translated. It extracts the comment, which is surrounded with the
       comment indicators and has the specified tag inside the comment, from the input	file  and
       writes  it with a dollar ($) prefix in the output file. genmsg supports the C and C++ com-
       ment indicators, '/*', '*/', and '//'.

   Testing
       genmsg generates two kinds of messages for testing, prefixed messages and  long	messages.
       Prefixed messages allow you to check that your program is retrieving the messages from the
       message catalog. Long messages allow you to check the appearance of your window	program's
       initial size and position.

OPTIONS
       The following options are supported:

       -a		  Append  the output into the message file message-file that is specified
			  by the -o option. If two different messages that have the same set  and
			  message  number are found, the message in the specified message file is
			  kept and the other message in the input file is discarded.

       -b		  Place the extracted comment after the corresponding message in the out-
			  put  file.  This  option changes the placement behavior of the -s or -c
			  option.

       -c message-tag	  Extract message comments having message-tag inside them from the  input
			  files and write them with a '$' prefix as a comment in the output file.

       -d		  Include  an  original  text  of  a message as a comment to be preserved
			  along with its translations. With this option, the translator  can  see
			  the  original messages even after they are replaced with their transla-
			  tions.

       -f		  Overwrite the input files and the project file when used with the -l or
			  -r option. With the -r option, genmsg overwrites only the input files.

       -g project-file	  Generate  project-file that has a list of set numbers and their maximum
			  message numbers in the input files.

       -l project-file	  Replace message numbers with the calculated numbers based upon project-
			  file	if the message numbers are -1 in the input files, and then gener-
			  ate copies of the input files with the new message numbers and  a  copy
			  of  project-file  with the new maximum message numbers. If project-file
			  is not found, genmsg uses the maximum message number in the input  file
			  as a base number and generates project-file.

       -m prefix	  Fill in the message with prefix. This option is useful for testing.

       -M suffix	  Fill in the message with suffix. This option is useful for testing.

       -n		  Add  comment lines to the output file indicating the file name and line
			  number in the input files where each extracted string is encountered.

       -o message-file	  Write the output to message-file.

       -p preprocessor	  Invoke preprocessor to preprocess macros and define statements for  the
			  catgets(3C)  calls.  genmsg first invokes the option argument as a pre-
			  processer and then starts the normal process against	the  output  from
			  the  preprocessor.  genmsg  initiates  this  process	for all the input
			  files.

       -r		  Replace message numbers with -1. This is the reverse operation  of  the
			  -l option.

       -s set-tag	  Extract  set	number comments having set-tag inside them from the input
			  files and write them with a '$' prefix as a comment in the output file.
			  If multiple comments are specified for one set number, the first one is
			  extracted and the rest of them are discarded.

       -t		  Generate a message that is three times as long as the original message.
			  This option is useful for testing.

       -x		  Suppress warning messages about message and set number range checks and
			  conflicts.

OPERANDS
       file    An input source file.

EXAMPLES
       Example 1 Assigning Message Numbers and Generating New Files

       Suppose that you have the following source and project files:

	 example% cat test.c
	 printf(catgets(catfd, 1, -1, "line too long\n"));
	 printf(catgets(catfd, 2, -1, "invalid code\n"));

	 example% cat proj
	 1   10
	 2   20

       The command

	 example% genmsg -l proj test.c

       would assign the calculated message numbers based upon proj  and  generate  the	following
       files:

       test.c.msg    Message file

       proj.new      Updated project file

       test.c.new    New source file

	 example% cat test.c.msg
	 $quote "
	 $set	 1
	 11	 "line too long\n"
	 $set	 2
	 21	 "invalid code\n"

	 example% cat proj.new
	 1   11
	 2   21

	 example% cat test.c.new
	 printf(catgets(catfd, 1, 11, "line too long\n"));
	 printf(catgets(catfd, 2, 21, "invalid code\n"));

       Example 2 Extracting Comments Into a File

       The command

	 example% genmsg -s SET -c MSG test.c
	 example% cat test.c
	 /* SET: tar messages */
	 /* MSG: don't translate "tar". */
	 catgets(catfd, 1, 1, "tar: tape write error");
	 // MSG: don't translate "tar" and "-I".
	 catgets(catfd, 1, 2, "tar: missing argument for -I flag");

       would extract the comments and write them in the following output file:

	 example% cat test.c.msg
	 $ /* SET: tar messages */
	 $set	 1
	 $ /* MSG: don't translate "tar". */
	 1	 "tar: tape write error"
	 $ // MSG: don't translate "tar" and "-I".
	 2	 "tar: missing argument for -I flag"

       Example 3 Generating Test Messages

       The following command:

	 example% genmsg -m PRE: -M :FIX test.c

       might generate the following messages for testing:

	 example% cat test.c.msg
	 1	 "PRE:OK:FIX"
	 2	 "PRE:Cancel:FIX"

       Example 4 Parsing a Macro and Writing the Extracted Messages

       Given the following input:

	 example% cat example.c
	 #include <nl_types.h>
	 #define MSG1	 "message1"
	 #define MSG2	 "message2"
	 #define MSG3	 "message3"
	 #define MSG(n)  catgets(catd, 1, n, MSG ## n)
	 void
	 main(int argc, char **argv)
	 {
	 nl_catd catd = catopen(argv[0], NL_CAT_LOCALE);
	 (void) printf("%s0\n, MSG(1));
	 (void) printf("%s0\n, MSG(2));
	 (void) printf("%s0\n, MSG(3));
	 (void) catclose(catd);
	 }

       The following command:

	 example% genmsg -p "cc -E" -o example.msg example.c

       would parse the MSG macros and write the extracted messages in  example.msg.

       Example 5 Assigning Calculated Message Numbers

       Suppose that you have the following header, source, and project files:

	 example% cat ../inc/msg.h
	 #define WARN_SET		      1
	 #define ERR_SET		      2
	 #define WARN_MSG(id, msg) catgets(catd, WARN_SET, (id), (msg))
	 #define ERR_MSG(id, msg)  catgets(catd, ERR_SET, (id), (msg))
	 example% example.c
	 #include "msg.h"
	 printf("%s, WARN_MSG(-1, "Warning error"));
	 printf("%s, ERR_MSG(-1, "Fatal error"));
	 example % proj
	 1     10
	 2     10

       The command

	 example% genmsg -f -p "cc -E -I../inc" -l proj \
	    -o example.msg example.c

       would assign each of the -1 message numbers a calculated number based upon  proj and would
       overwrite the results to example.c and proj. Also, this command writes the extracted  mes-
       sages in example.msg.

ENVIRONMENT VARIABLES
       See  environ(5)	for  descriptions  of the following environment variables that affect the
       execution of genmsg: LC_MESSAGES and NLSPATH.

EXIT STATUS
       The following exit values are returned:

       0     Successful completion.

       >0    An error occurred.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWloc			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       gencat(1), catgets(3C), catopen(3C), attributes(5), environ(5)

NOTES
       genmsg does not handle pointers or variables in the catgets(3C) call. For example:

	 const int set_num = 1;
	 extern int msg_num(const char *);
	 const char *msg = "Hello";
	 catgets(catd, set_num, msg_num(msg), msg);

       When the auto message numbering is turned on with a preprocessor, if  there  are  multiple
       -1's  in  the  catgets(3C) line, genmsg replaces all of the -1's in the line with a calcu-
       lated number. For example, given the input:

	 #define MSG(id, msg) catgets(catd, 1, (id), (msg))
	 if (ret == -1) printf("%s, MSG(-1, "Failed"));

       the command

	 genmsg -l proj -p "cc -E"

       would produce:

	    #define MSG(id, msg) catgets(catd, 1, (id), (msg))
	    if (ret == 1) printf("%s, MSG(1, "Failed"));

       The workaround would be to split it into two lines as follows:

	    if (ret == -1)
		  printf("%s, MSG(-1, "Failed"));

SunOS 5.11				   14 May 2004					genmsg(1)


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