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# Make a TAGS file for emacs ``M-x find-tag'' from all <c,h,y,xs> source files.
# (``make realclean'' first to avoid generated files, or ``make'' first
# to get tags from all files.)
#
#
# usage: sh emacs/ptags <options>
#
# options:
#
# fullpath - use full paths in TAGS (default: relative to the root)
#
# (IZ: to be a happier jumper: install 'imenu-go.el' from
# ftp://ftp.math.ohio-state.edu/pub/users/ilya/emacs.)
#
# (Some tags should probably live in their own subdirs, like those in x2p/,
# but I have never been interested in x2p anyway.)
#
# Hallvard B Furuseth <h.b.furuseth@usit.uio.no>, Aug -96.
#
# Ilya Zakharevich, Oct 97: minor comments, add CPerl scan;
# Use Hallvard's scan for XS files - since he processes the "C" part too -
# but with a lot of improvements: now it is no worse than CPerl's one.
# Avoid builtin on OS/2:
if test ! -z "$OS2_SHELL"; then alias find=gnufind; fi
case "$1" in
fullpath)
cwd=`pwd`
cperl_add_tags='cperl-add-tags-recurse-noxs-fullpath'
echo "Building TAGS with full paths"
;;
*)
cperl_add_tags='cperl-add-tags-recurse-noxs'
cwd='.'
echo "Building TAGS with relative paths"
esac
emacs=`(which emacs || which xemacs) 2>/dev/null`
[ -x "$emacs" ] || { echo "can't find emacs or xemacs in PATH"; exit 1; }
# Insure proper order (.h after .c, .xs before .c in subdirs):
# Move autogenerated less-informative files to the end:
# Hard to do embed.h and embedvar.h in one sweep:
topfiles="`echo ' ' *.y *.c *.h ' ' | sed 's/ / /g' | sed 's/ embedvar\.h\|embed\.h\|perlapi\.h\|os2ish\.h\|\(globals\|perlapi\| os2\)\.c / /g'| sed "s#\(^\| \)\([^ ]\)#\1$cwd/\2#g"`"
subdirs="`find $cwd/* -maxdepth 0 -type d`"
subdirfiles="`find $subdirs -name '*.[cy]' -print | sort`"
subdirfiles1="`find $subdirs -name '*.[hH]' -print | sort`"
xsfiles="`find $cwd/ -name '*.xs' -print | sort`"
# etags -d : process defines too (default now)
# These are example lines for global variables and PP-code:
## IEXT SV * Iparsehook;
## IEXT char * Isplitstr IINIT(" ");
## dEXTCONST char rcsid[] = "perl.c\nPatch level: ###\n";
## PP(pp_const)
## PERLVARI(Grsfp, PerlIO *, Nullfp)
## PERLVAR(cvcache, HV *)
# Putting PL_\1 in the substitution line makes etags dump core
# Thus we do it later (but 20.2.92 does it OK).
set x -d -l c \
-r '/[dI]?EXT\(CONST\)?[ \t*]+\([a-zA-Z_0-9]+[ \t*]+\)*\([a-zA-Z_0-9]+\)[ \t]*\($\|;\|\[\|[ \t]I+NIT[ \t]*(\|\/\*\)/\3/' \
-r '/IEXT[ \t][^\/]*[ \t*]I\([a-zA-Z_][a-zA-Z_0-9]*\)[\[; \t]/\1/' \
-r '/PERLVAR[a-zA-Z_0-9]*[ \t]*([ \t]*[GIT]?\([a-zA-Z_][a-zA-Z_0-9]*\)[ \t]*[\[,]/\1/' \
-r '/PP[ \t]*([ \t]*\([^ \t()]*\)[ \t]*)/\1/'
shift
rm -f TAGS.tmp TAGS.tm2
# Process lines like this: #define MEM_ALIGNBYTES $alignbytes /**/
etags -o TAGS.tmp \
-l none -r '/#\(\$[a-zA-Z_0-9]+\|define\)[ \t]+\([a-zA-Z_0-9]+\)/\2/' \
$cwd/config_h.SH
# Process lines like this: Mcc (Loc.U):
etags -o TAGS.tmp -a \
-l none -r '/^\([a-zA-Z_0-9]+\)[ \t]+(/\$\1/' \
-r '/^\([a-zA-Z_0-9]+\)[ \t]+(/\1/' $cwd/Porting/Glossary
etags -o TAGS.tmp -a "$@" $topfiles
# Now add these PL_:
perl -w014pe 'if (s/^( .* PERLVAR A?I? # 1: TAG group
\s* \( \s* [GIT] #
.* #
\x7F # End of description
)
( .* \x01 ) # 2: Exact group
/${1}PL_$2/mgx) { # Add PL_
$chars = chomp;
s/^((\n.+,)\d+)/ $2 . (length($_) - length($1) - 1) /e;
$_ .= ("\f" x $chars);
}' TAGS.tmp > TAGS.tm1 && mv TAGS.tm1 TAGS.tmp
# Now remove these Perl_, add empty- and perl_-flavors:
perl -w014pe 'if (s/^(Perl_ # 1: First group
(\w+) \( # 2: Stripped name
\x7F # End of description
) # End of description
(\d+,\d+\n) # 3: TAGS Trail
/$1$3$1$2\x01$3$1perl_$2\x01$3/mgx) { # Repeat, add empty and perl_ flavors
$chars = chomp;
s/^((\n.+,)\d+)/ $2 . (length($_) - length($1) - 1) /e;
$_ .= ("\f" x $chars);
}' TAGS.tmp > TAGS.tm1 && mv TAGS.tm1 TAGS.tmp
# Now remove these S_, add empty-flavor:
perl -w014pe 'if (s/^(S_ # 1: First group
(\w+) \( # 2: Stripped name
\x7F # End of description
) # End of description
(\d+,\d+\n) # 3: TAGS Trail
/$1$3$1$2\x01$3/mgx) { # Repeat, add empty_ flavor
$chars = chomp;
s/^((\n.+,)\d+)/ $2 . (length($_) - length($1) - 1) /e;
$_ .= ("\f" x $chars);
}' TAGS.tmp > TAGS.tm1 && mv TAGS.tm1 TAGS.tmp
etags -o TAGS.tmp -a -D -l none -r '/#define.*\t\(Perl_.*\)/\1/' $cwd/embed.h
etags -o TAGS.tmp -a $cwd/globals.c $cwd/embedvar.h $cwd/perlapi.c $cwd/perlapi.h
# The above processes created a lot of descriptions with an
# an explicitly specified tag. Such descriptions have higher
# precedence than descriptions without an explicitely specified tag.
# To restore the justice, make all the descriptions explicit.
perl -w014pe 'if (s/^( [^\n\x7F\x01]*\b # 1: TAG group
(\w+) # 2: word
[^\w\x7F\x01\n]* # Most anything
\x7F # End of description
)
(\d+,\d+\n) # 3: TAGS Trail
/$1$2\x01$3/mgx) { # Add specific marking
$chars = chomp;
s/^((\n.+,)\d+)/ $2 . (length($_) - length($1) - 1) /e;
$_ .= ("\f" x $chars);
}' TAGS.tmp > TAGS.tm1 && mv TAGS.tm1 TAGS.tmp
# Add MODULE lines to TAG files (to be postprocessed later),
# and BOOT: lines (in DynaLoader processed twice?)
# This skips too many XSUBs:
# etags -o TAGS.tmp -a -d -l c \
# -r '/MODULE[ \t=]+\(.*PACKAGE[ \t]*=[ \t]*\)?\([^ \t]+\)\([ \t]*PREFIX[ \t]*=[ \t]*\([^ \t]+\)\)?/\2/' \
# -r '/[ \t]*BOOT:/' \
# $xsfiles
etags -o TAGS.tmp -a -d -l c \
-r '/MODULE[ \t=]+\(.*PACKAGE[ \t]*=[ \t]*\)?\([^ \t]+\)\([ \t]*PREFIX[ \t]*=[ \t]*\([^ \t]+\)\)?/\2/' \
-r '/[ \t]*BOOT:/' \
-r '/\([_a-zA-Z][a-zA-Z0-9_:]*\)(/' \
$xsfiles
# -r '/MODULE[ \t=]+\(.*PACKAGE[ \t]*=[ \t]*\)?\([^ \t]+\)/\2/' \
# -r '/MODULE.*PREFIX[ \t]*=[ \t]*\([^ \t]+\)/\1/' \
# $xsfiles
etags -o TAGS.tmp -a "$@" $subdirfiles
etags -o TAGS.tmp -a "$@" $subdirfiles1
if test ! -f emacs/cperl-mode.elc ; then
( cd emacs; $emacs -batch -q -no-site-file -f batch-byte-compile cperl-mode.el )
fi
# This should work with newer Emaxen
cp TAGS.tmp TAGS
if $emacs -batch -q -no-site-file -l emacs/cperl-mode.elc -f $cperl_add_tags ; then
mv TAGS TAGS.tmp
fi
perl -w014pe '
$update = s/^PP\(\177\d+,\d+\n//gm;
$update += s/^(I?EXT.*[ \t])IINIT[ \t]*\((\177)/$1$2/gm;
if (/^\n*[^\s,]+\.xs,/s) {
$mod = $cmod = $bmod = $pref = "";
s/^(.*\n)\1+/$1/mg; # Remove duplicate lines
$_ = join("", map {
if (/^MODULE[ \t]*=[ \t]*(\S+)(?:[ \t]+PACKAGE[ \t]*=[ \t]*(\S+))?[ \t\177]/m) {
$mod = $+;
($bmod = $mod) =~ tr/:/_/;
$cmod = "XS_${bmod}_";
$pref = "";
if (s/[ \t]+PREFIX[ \t]*=[ \t]*([^\s\177]+)(\177)/$+/) {
$pref = $1;
$pref =~ s/([^\w\s])/\\$1/g;
$pref = "(?:$pref)?";
}
} elsif ($mod ne "") {
# Ref points for Module::subr, XS_Module_subr, subr
s/^($pref(\w+)[ \t()]*\177)(\d+,\d+)$/$1${mod}::${2}\01$3\n$1$2\01$3\n$1$cmod$2\01$3/gm;
# Ref for Module::bootstrap bootstrap boot_Module
s/^([ \t]*BOOT:\177)(\d+,\d+)$/$1${mod}::bootstrap\01$2\n${1}bootstrap\01$2\n${1}boot_$bmod\01$2/gm;
}
$_;
} split(/(\nMODULE[ \t]*=[^\n\177]+\177)/));
$update = 1;
}
if ($update) {
$chars = chomp;
s/^((\n.+,)\d+)/ $2 . (length($_) - length($1) - 1) /e;
$_ .= ("\f" x $chars);
}' TAGS.tmp > TAGS.tm2
rm -f TAGS
mv TAGS.tm2 TAGS
rm -f TAGS.tmp
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