postgresql/src/tools/make_ctags

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#!/bin/sh
# src/tools/make_ctags
trap "rm -f /tmp/$$" 0 1 2 3 15
rm -f ./tags
IS_EXUBERANT=""
ctags --version 2>&1 | grep Exuberant && IS_EXUBERANT="Y"
# List of kinds supported by Exuberant Ctags 5.8
# generated by ctags --list-kinds
# --c-kinds was called --c-types before 2003
# c classes
# d macro definitions
# e enumerators (values inside an enumeration)
# f function definitions
# g enumeration names
# l local variables [off]
# m class, struct, and union members
# n namespaces
# p function prototypes [off]
# s structure names
# t typedefs
# u union names
# v variable definitions
# x external and forward variable declarations [off]
if [ "$IS_EXUBERANT" ]
then FLAGS="--c-kinds=+dfmstuv"
else FLAGS="-dt"
fi
# this is outputting the tags into the file 'tags', and appending
find `pwd`/ -type f -name '*.[chyl]' -print |
xargs ctags -a -f tags "$FLAGS"
# Exuberant tags has a header that we cannot sort in with the other entries
# so we skip the sort step
# Why are we sorting this? I guess some tag implementation need this,
# particularly for append mode. bjm 2012-02-24
if [ ! "$IS_EXUBERANT" ]
then LC_ALL=C
export LC_ALL
sort tags >/tmp/$$ && mv /tmp/$$ tags
fi
find . \( -name 'CVS' -prune \) -o \( -name .git -prune \) -o -type d -print |
while read DIR
do [ "$DIR" != "." ] && ln -f -s `echo "$DIR" | sed 's;/[^/]*;/..;g'`/tags "$DIR"/tags
done