GIF89a=( �' 7IAXKgNgYvYx\%wh&h}t�h%�s%x�}9�R��&�0%� (�.��5�SD��&�a)�x5��;ͣ*ȡ&ղ)ׯ7׵<ѻ4�3�H֧KͯT��Y�aq��q��F� !� ' !� NETSCAPE2.0 , =( ��pH,�Ȥr�l:xШtJ�Z�جv��z��xL.:��z�n���|N�����~�������& !�0`9R�}��"�"a:S�~x��������g���E�������R���E����B�� ��ȸ��D���"�Ů� �H��L��D٫D�B�����D���T���H �G��A R�ڐ |�� ٭&��E8�S�kG�A�px�a��� R2XB��E8I���6X�:vT)�~��q�賥��"F~%x� � 4#Z�0O|-4Bs�X:= Q� Sal��yXJ`GȦ|s h��K3l7�B|�$'7Jީܪ0!��D�n=�P� ����0`�R�lj����v>���5 �.69�ϸd�����nlv�9��f{���Pbx �l5}�p� ��� �3a���I�O����!ܾ���i��9��#��)p�a ޽ �{�)vm��%D~ 6f��s}Œ�D�W E�`!� �&L8x� �ܝ{)x`X/>�}m��R�*|`D�=�_ ^�5 !_&'a�O�7�c��`DCx`�¥�9�Y�F���`?��"� �n@`�} lď��@4>�d S �v�xN��"@~d��=�g�s~G��� ���ud &p8Q�)ƫlXD����A~H�ySun�j���k*D�LH�] ��C"J��Xb~ʪwSt}6K,��q�S:9ت:���l�@�`�� �.۬�t9�S�[:��=`9N����{¿�A !R�:���6��x�0�_ �;������^���#����!����U���;0L1�����p% A��U̬ݵ��%�S��!���~`�G���� ���=4�np�3���������u�u�ٮ|%2�I��r�#0��J``8�@S@5� ���^`8E�]�.�S���7 � �0�j S�D� z���i�S�����!���l��w9*�D�I�nEX��� &A�Go�Qf��F��;���}�J����F5��Q|���X��T��y���]� o ��C=��:���PB@ D׽S�(>�C�x}`��xJЬ�۠��p+eE0`�}`A �/NE�� �9@��� H�7�!%B0`�l*��!8 2�%� �:�1�0E��ux%nP1�!�C)�P81l�ɸF#Ƭ{����B0>�� �b�`��O3��()yRpb��E.ZD8�H@% �Rx+%���c� ���f��b�d�`F�"8�XH"��-�|1�6iI, 2�$+](A*j� QT�o0.�U�`�R�}`�SN����yae�����b��o~ S)�y�@��3 �tT�0�&�+~L�f"�-|�~��>!�v��~�\Q1)}@�}h#aP72�"�$ !� " , =( &7IAXG]KgNgYvYxR"k\%w]'}h}t�h%�g+�s%r.m3ax3�x�}9��&��+�!7�0%� (�.�SD��&��;�"&ײ)׻4��6�K� �@pH,�Ȥr�l:xШtJ�Z�جv��z��xL.:��z�n���|N�����~�������& !�0`9R�}��"�"a:S�~x��������g �� E �� �������E �´��C���ǶR��D��"Ʒ�ʱH��M��GڬD�B����D��T����G���C�C� l&�~:'�tU�6ɹ#��)�'�.6�&��Ȼ K(8p0N�?!�2"��NIJX>R��OM '��2�*x�>#n� �@<[:�I�f ��T���Cdb��[�}E�5MBo��@�`@��tW-3 �x�B���jI�&E�9[T&$��ﯧ&"s��ȳ����dc�UUρ#���ldj?����`\}���u|3'�R]�6 �S#�!�FKL�*N E���`$�:e�YD�q�.�촁�s \-�jA 9�����-��M[�x(�s��x�|���p��}k�T�DpE@W� ��]k`1� ���Yb ��0l��*n0��"~zBd�~u�7�0Bl��0-�x~|U�U0 �h�*HS�|��e"#"?vp�i`e6^�+q��`m8 #V�� ��VS|`��"m"сSn|@:U���~`pb�G�ED����2F�I�? >�x� R� ��%~jx��<�a�9ij�2�D��&: Z`�]w���:�6��B�7eFJ|�ҧ�,���FǮcS�ʶ+B�,�ܺN���>PAD�HD��~���n��}�#�� Q��S���2�X�{�k�lQ�2�����w�|2� h9��G�,m���3��6-��E�L��I�³*K���q�`DwV�QXS��peS��� qܧTS����R�u �<�a�*At�lmE� � ��N[P1�ۦ��$��@`��Dpy�yXvCAy�B`}D� 0QwG#� �a[^�� $���Ǧ{L�"[��K�g�;�S~��GX.�goT.��ư��x���?1z��x~:�g�|�L� ��S`��0S]P�^p F<""�?!,�!N4&P� ����:T�@h�9%t��:�-~�I<`�9p I&.)^ 40D#p@�j4�ج:�01��rܼF2oW�#Z ;$Q q  �K��Nl#29 !F@�Bh�ᏬL!XF�LHKh�.�hE&J�G��<"WN!�����Y@� >R~19J"�2,/ &.GXB%�R�9B6�W]���W�I�$��9�RE8Y� ��"�A5�Q.axB�&ة�J�! �t)K%tS-�JF b�NMxL��)�R��"���6O!TH�H� 0 !� ) , =( &AXKgNgYvYxR"k\%wh&h}h%�g+�s%r.x3�x�}9��&��+�R,�!7�0%� (�.��5��&�a)��;�"&ף*Ȳ)ׯ7׻4�3��6�H֧KͻH�T��Y��q��h� ��pH,�Ȥr�l:xШtJ�Z�جv��z��xL.:��z�n���|N�����~�������& !�0`9R�}��"�"a:S�~x��������g �� E$����� � ����$E$��"��D� � ������R��C��� E ��H�M��G�D� �B��ϾD��a��`1r��Ӑ�� �o~�zU!L�C'�yW�UGt����ll�0���uG�)A�s[��x� �xO%��X2�  P�n:R/��aHae+�Dm?# ǣ6�8�J�x�Di�M���j���5oQ7�- <! *�l��R2r/a!l)d� A"�E���� &� ;��c �%����b��pe~C"B���H�eF2��`8qb�t_`ur`e� w�u3��Pv�h""�`�Íx�LĹ��3� �~ֺ�:���MDfJ� �۵�W�%�S�X �؁)�@��:E��w�u�Sxb8y\m�zS��Zb�E�L��w!y(>�"w�=�|��s�d �C�W)H�cC$�L �7r.�\{)@�`@ �X�$PD `aaG:���O�72E�amn]�"Rc�x�R� &dR8`g��i�xLR!�P &d����T���i�|�_ � Qi�#�`g:��:noM� :V �)p����W&a=�e�k� j���1߲s�x�W�jal|0��B0�, \j۴:6���C ��W��|��9���zĸV {�;��n��V�m�I��.��PN� ����C��+��By�ѾHŸ:��� 7�Y�FTk�SaoaY$D�S���29R�kt� ��f� ��:��Sp�3�I��DZ� �9���g��u�*3)O��[_hv ,���Et x�BH� �[��64M@�S�M7d�l�ܶ5-��U܍��z�R3Ԭ3~ ��P��5�g: ���kN�&0�j4���#{��3S�2�K�'ợl���2K{� {۶?~m𸧠�I�nE�='����^���_�=��~�#O���'���o..�Y�n��CSO��a��K��o,���b�����{�C�� "�{�K ��w��Ozdը�:$ ���v�] A#� ���a�z)Rx׿ƥ�d``�w-�y�f�K!����|��P��=�`�(f��'Pa ��BJa%��f�%`�}F����6>��`G"�}�=�!o`�^FP�ةQ�C���`(�}\�ݮ ��$<��n@dĠE#��U�I�!� #l��9`k���'Rr��Z�NB�MF �[�+9���-�wj���8�r� ,V�h"�|�S=�G_��"E� 0i*%̲��da0mVk�):;&6p>�jK ��# �D�:�c?:R Ӭf��I-�"�<�="��7�3S��c2RW ,�8(T"P0F¡Jh�" ; 403WebShell
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Current File : /usr/share/shtool/sh.scpp
##
##  scpp -- Sharing C Pre-Processor
##  Copyright (c) 1999-2008 Ralf S. Engelschall <rse@engelschall.com>
##
##  This file is part of shtool and free software; you can redistribute
##  it and/or modify it under the terms of the GNU General Public
##  License as published by the Free Software Foundation; either version
##  2 of the License, or (at your option) any later version.
##
##  This file is distributed in the hope that it will be useful,
##  but WITHOUT ANY WARRANTY; without even the implied warranty of
##  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
##  General Public License for more details.
##
##  You should have received a copy of the GNU General Public License
##  along with this program; if not, write to the Free Software
##  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
##  USA, or contact Ralf S. Engelschall <rse@engelschall.com>.
##

str_tool="scpp"
str_usage="[-v|--verbose] [-p|--preserve] [-f|--filter <filter>] [-o|--output <ofile>] [-t|--template <tfile>] [-M|--mark <mark>] [-D|--define <dname>] [-C|--class <cname>] <file> [<file> ...]"
gen_tmpfile=yes
arg_spec="1+"
opt_spec="v.p.f+o:t:M:D:C:"
opt_alias="v:verbose,p:preserve,f:filter,o:output,t:template,M:mark,D:define,C:class"
opt_v=no
opt_p=no
opt_f=""
opt_o="lib.h"
opt_t="lib.h.in"
opt_M="%%MARK%%"
opt_D="cpp"
opt_C="intern"

. ./sh.common

srcs="$*"
output="${opt_o}.n"

#   find a reasonable Awk
awk=''
paths=`echo $PATH |\
       sed -e 's%/*:%:%g' -e 's%/$%%' \
           -e 's/^:/.:/' -e 's/::/:.:/g' -e 's/:$/:./' \
           -e 's/:/ /g'`
for name in gawk nawk awk; do
    for path in $paths; do
        if [ -r "$path/$name" ]; then
            awk="$path/$name"
            break
        fi
    done
    if [ ".$awk" != . ]; then
        break
    fi
done
if [ ".$awk" = . ]; then
    echo "$msgprefix:Error: cannot find a reasonable Awk" 1>&2
    shtool_exit 1
fi

#   parse source file(s)
if [ ".$opt_v" = .yes ]; then
    echo "Parsing:" | $awk '{ printf("%s", $0); }' 1>&2
fi
for src in $srcs; do
    if [ ".$opt_v" = .yes ]; then
        echo $src | $awk '{ printf(" %s", $0); }' 1>&2
    fi
    if [ ".$opt_f" != . ]; then
        inputcmd="sed"
        OIFS="$IFS"; IFS="$ASC_NL"; set -- $opt_f; IFS="$OIFS"
        for e
        do
            inputcmd="$inputcmd -e '$e'"
        done
        inputcmd="$inputcmd '$src'"
    else
        inputcmd="cat '$src'"
    fi
    eval $inputcmd |\
    $awk '
       BEGIN {
           ln    = 0;
           fln   = 0;
           level = 0;
           mode  = "";
           store = "";
       }
       {
           ln++;
       }
       /^#if.*/ {
           level++;
       }
       /^#if [a-zA-Z_][a-zA-Z0-9_]* *$/ {
           if ($2 == define) {
               mode = "D";
               printf("D:#line %d \"%s\"\n", ln, src);
               next;
           }
       }
       /^#endif.*/ {
           level--;
           if (mode == "D" && level == 0) {
               mode = "";
               next;
           }
       }
       /^[a-zA-Z_][a-zA-Z0-9_].*;.*/ {
           if ($1 == class) {
               printf("V:#line %d \"%s\"\n", ln, src);
               printf("V:%s\n", $0);
               printf("J:%s\n", $0);
               next;
           }
       }
       /^[a-zA-Z_][a-zA-Z0-9_].*=.*/ {
           if ($1 == class) {
               printf("V:#line %d \"%s\"\n", ln, src);
               printf("V:%s\n", $0);
               printf("J:%s\n", $0);
               next;
           }
       }
       /^[a-zA-Z_][a-zA-Z0-9_]*/ {
           if ($1 == class) {
               fln = ln;
               store = $0;
               mode = "F";
               next;
           }
       }
       /^\{ *$/ {
           if (mode == "F") {
               printf("F:#line %d \"%s\"\n", fln, src);
               printf("F:%s;\n", store);
               printf("I:%s;\n", store);
               store = "";
               mode = "";
               next;
           }
       }
       {
           if (mode == "D")
               printf("D:%s\n", $0);
           else if (mode == "F")
               store = store " " $0;
       }
    ' "src=$src" "define=$opt_D" "class=$opt_C" >>$tmpfile
done
if [ ".$opt_v" = .yes ]; then
    echo "" 1>&2
fi

#   start generating output header
echo "/* $opt_o -- autogenerated from $opt_t, DO NOT EDIT! */" >$output
echo "#line 1 \"$opt_t\"" >>$output
sed <$opt_t -e "1,/^${opt_M} *\$/p" -e 'd' |\
sed -e "/^${opt_M} *\$/d" >>$output

#   merge in the define blocks
grep '^D:' $tmpfile | sed -e 's/^D://' >>$output

#   generate standard prolog
echo "#line 1 \"_ON_THE_FLY_\"" >>$output
echo "" >>$output
echo "/* make sure the scpp source extensions are skipped */" >>$output
echo "#define $opt_D 0" >>$output
echo "#define $opt_C /**/" >>$output

#   generate namespace hiding for variables
echo "" >>$output
echo "/* move intern variables to hidden namespace */" >>$output
grep '^J:' $tmpfile | sed >>$output \
    -e 's/^J://' \
    -e 's/  */ /g' \
    -e 's/^[^=;]*[ *]\([a-zA-Z0-9_]*\)\[\];.*$/#define \1 __\1/' \
    -e 's/^[^=;]*[ *]\([a-zA-Z0-9_]*\)\[\] =.*$/#define \1 __\1/' \
    -e 's/^[^=;]*[ *]\([a-zA-Z0-9_]*\);.*$/#define \1 __\1/' \
    -e 's/^[^=;]*[ *]\([a-zA-Z0-9_]*\) =.*$/#define \1 __\1/'

#   generate namespace hiding for functions
echo "" >>$output
echo "/* move intern functions to hidden namespace */" >>$output
grep '^I:' $tmpfile | sed >>$output \
    -e 's/^I://' \
    -e 's/\([ (]\) */\1/g' \
    -e 's/ *\([),]\)/\1/g' \
    -e 's/^[^(]*[ *]\([a-zA-Z0-9_]*\)(.*$/#define \1 __\1/'

#   generate prototypes for variables
echo "" >>$output
echo "/* prototypes for intern variables */" >>$output
grep '^V:' $tmpfile | sed >>$output \
    -e 's/^V://' \
    -e 's/  */ /g' \
    -e 's/^\([^=;]*[ *][a-zA-Z0-9_]*\[\]\);.*$/\1;/' \
    -e 's/^\([^=;]*[ *][a-zA-Z0-9_]*\[\]\) =.*$/\1;/' \
    -e 's/^\([^=;]*[ *][a-zA-Z0-9_]*\);.*$/\1;/' \
    -e 's/^\([^=;]*[ *][a-zA-Z0-9_]*\) =.*$/\1;/' \
    -e 's/ ;/;/g' \
    -e "s/^$opt_C /extern /"

#   generate prototypes for functions
echo "" >>$output
echo "/* prototypes for intern functions */" >>$output
grep '^F:' $tmpfile | sed >>$output \
    -e 's/^F://' \
    -e 's/\([ (]\) */\1/g' \
    -e 's/ *\([),]\)/\1/g' \
    -e 's/\([* ]\)[a-zA-Z0-9_]*,/\1,/g' \
    -e 's/\([* ]\)[a-zA-Z0-9_]*);/\1);/g' \
    -e 's/(\*[a-zA-Z0-9_]*)(/(*)(/g' \
    -e 's/\([ (]\) */\1/g' \
    -e 's/ *\([),]\)/\1/g' \
    -e "s/^$opt_C /extern /"

#   finish generating output header
n=`(echo ''; sed <$opt_t -e "1,/^${opt_M} *\$/p" -e 'd') |\
   wc -l | sed -e 's;^ *\([0-9]*\) *$;\1;'`
echo "#line $n \"$opt_t\"" >>$output
sed <$opt_t -e "/^${opt_M} *\$/,\$p" -e 'd' |\
sed -e "/^${opt_M} *\$/d" >>$output

#   create final output file
if [ -f $opt_o ]; then
    if [ ".$opt_p" = .yes ]; then
        grep -v '^#line' $opt_o  >$tmpfile.o
        grep -v '^#line' $output >$tmpfile.n
        out_old="$tmpfile.o"
        out_new="$tmpfile.n"
    else
        out_old="$opt_o"
        out_new="$output"
    fi
    if cmp -s $out_old $out_new; then
        :
    else
        cp $output $opt_o
    fi
else
    cp $output $opt_o
fi
rm -f $output
rm -f $tmpfile $tmpfile.* >/dev/null 2>&1

shtool_exit 0

##
##  manual page
##

=pod

=head1 NAME

B<shtool-scpp> - B<GNU shtool> C source file pre-processor

=head1 SYNOPSIS

B<shtool scpp>
[B<-v>|B<--verbose>]
[B<-p>|B<--preserve>]
[B<-f>|B<--filter> I<filter>]
[B<-o>|B<--output> I<ofile>]
[B<-t>|B<--template> I<tfile>]
[B<-M>|B<--mark> I<mark>]
[B<-D>|B<--define> I<dname>]
[B<-C>|B<--class> I<cname>]
I<file> [I<file> ...]

=head1 DESCRIPTION

This command is an additional ANSI C source file pre-processor for sharing
cpp(1) code segments, internal variables and internal functions. The intention
for this comes from writing libraries in ANSI C. Here a common shared internal
header file is usually used for sharing information between the library
source files.

The operation is to parse special constructs in I<file>s, generate a few
things out of these constructs and insert them at position I<mark> in I<tfile>
by writing the output to I<ofile>. Additionally the I<file>s are never touched
or modified. Instead the constructs are removed later by the cpp(1) phase of
the build process. The only prerequisite is that every I<file> has a
``C<#include ">I<ofile>C<">'' at the top.

This command provides the following features: First it avoids namespace
pollution and reduces prototyping efforts for internal symbols by recognizing
functions and variables which are defined with the storage class identifier
``I<cname>''.  For instance if I<cname> is ``intern'', a function ``C<intern
void *foobar(int quux)>'' in one of the I<file>s is translated into both a
``C<#define foobar __foobar>'' and a ``C<extern void *foobar(int quux);>'' in
I<ofile>. Additionally a global ``C<#define> I<cname> C</**/>'' is also
created in I<ofile> to let the compiler silently ignore this additional
storage class identifier.

Second, the library source files usually want to share C<typedef>s,
C<#define>s, etc.  over the source file boundaries. To achieve this one can
either place this stuff manually into I<tfile> or use the second feature of
B<scpp>: All code in I<file>s encapsulated with ``C<#if >I<dname> ...
C<#endif>'' is automatically copied to I<ofile>. Additionally a global
``C<#define> I<dname> C<0>'' is also created in I<ofile> to let the compiler
silently skip this parts (because it was already found in the header).

=head1 OPTIONS

The following command line options are available.

=over 4

=item B<-v>, B<--verbose>

Display some processing information.

=item B<-p>, B<--preserve>

Preserves I<ofile> independent of the generated ``#line'' lines. This is
useful for Makefiles if the real contents of I<ofile> will not change,
just line numbers. Default is to overwrite.

=item B<-f>, B<--filter> I<filter>

Apply one or more pre-processing sed(1) I<filter> commands (usually of
type ``C<s/.../.../>'') to each input file before their input is parsed.
This option can occur multiple times.

=item B<-o>, B<--output> I<ofile>

Output file name. Default is C<lib.h>.

=item B<-t>, B<--template> I<tfile>

Template file name. Default is C<lib.h.in>.

=item B<-M>, B<--mark> I<mark>

Mark to be replaced by generated constructs. Default is C<%%MARK%%>.

=item B<-D>, B<--define> I<dname>

FIXME. Default is C<cpp>.

=item B<-C>, B<--class> I<cname>

FIXME. Default is C<intern>.

=back

=head1 EXAMPLE

 #   Makefile
 SRCS=foo_bar.c foo_quux.c
 foo_p.h: foo_p.h.in
      shtool scpp -o foo_p.h -t foo_p.h.in \
                  -M %%MARK%% -D cpp -C intern $(SRCS)

 /* foo_p.h.in */
 #ifndef FOO_P_H
 #define FOO_P_H
 %%MARK%%
 #endif /* FOO_P_H */

 /* foo_bar.c */
 #include "foo_p.h"
 #if cpp
 #define OURS_INIT 4711
 #endif
 intern int ours;
 static int myone = 0815;
 intern int bar(void)
 {
     ours += myone;
 }

 /* foo_quux.c */
 #include "foo_p.h"
 int main(int argc, char *argv[])
 {
     int i;
     ours = OURS_INIT
     for (i = 0; i < 10; i++) {
         bar();
         printf("ours now %d\n", ours);
     }
     return 0;
 }

=head1 HISTORY

The B<GNU shtool> B<scpp> command was originally written by Ralf S.
Engelschall E<lt>rse@engelschall.comE<gt> in 1999 for B<GNU shtool>.
Its was prompted by the need to have a pre-processing facility
in the B<GNU pth> project.

=head1 SEE ALSO

shtool(1), cpp(1).

=cut

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