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Preface

Introduction

User Commands

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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 specified, 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 message 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++ comment 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 output 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 translations.

-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 generate 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 preprocesser 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 messages 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 calculated 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"));