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Generate Namespace Headers
# This script is a modified version of this: https://github.com/jverkoey/nimbus/blob/master/scripts/generate_namespace_header
header=$SRCROOT/ext/NamespacedDependencies.h
prefix="YOUR_PREFIX_HERE"
echo "Generating $header from $CODESIGNING_FOLDER_PATH..."
echo "// Namespaced Header
#ifndef __NS_SYMBOL
// We need to have multiple levels of macros here so that __NAMESPACE_PREFIX_ is
// properly replaced by the time we concatenate the namespace prefix.
#define __NS_REWRITE(ns, symbol) ns ## _ ## symbol
#define __NS_BRIDGE(ns, symbol) __NS_REWRITE(ns, symbol)
#define __NS_SYMBOL(symbol) __NS_BRIDGE($prefix, symbol)
#endif
" > $header
# The following one-liner is a bit of a pain in the ass.
# Breakdown:
#
# nm $CODESIGNING_FOLDER_PATH -j
# Dump all of the symbols from the compiled library. This will include all UIKit
# and Foundation symbols as well.
#
# | grep "^_OBJC_CLASS_$_"
# Filter out the interfaces.
#
# | grep -v "\$_NS"
# Remove all Foundation classes.
#
# | grep -v "\$_UI"
# Remove all UIKit classes.
#
# | sed -e 's/_OBJC_CLASS_\$_\(.*\)/#ifndef \1\'$'\n''#define \1 __NS_SYMBOL(\1)\'$'\n''#endif/g'
# I use the syntax outlined here:
# http://stackoverflow.com/questions/6761796/bash-perl-or-sed-insert-on-new-line-after-found-phrase
# to create newlines so that we can write the following on separate lines:
#
# #ifndef ...
# #define ...
# #endif
#
echo "// Classes" >> $header
nm $CODESIGNING_FOLDER_PATH -j | sort | uniq | grep "^_OBJC_CLASS_\$_" | grep -v "\$_AGSGT" | grep -v "\$_CL" | grep -v "\$_NS" | grep -v "\$_UI" | sed -e 's/_OBJC_CLASS_\$_\(.*\)/#ifndef \1\'$'\n''#define \1 __NS_SYMBOL(\1)\'$'\n''#endif\'$'\n''/g' >> $header
echo "// Functions" >> $header
nm $CODESIGNING_FOLDER_PATH | sort | uniq | grep " T " | cut -d' ' -f3 | grep -v "\$_NS" | grep -v "\$_UI" | sed -e 's/_\(.*\)/#ifndef \1\'$'\n''#define \1 __NS_SYMBOL(\1)\'$'\n''#endif\'$'\n''/g' >> $header
echo "// Externs" >> $header
nm $CODESIGNING_FOLDER_PATH | sort | uniq | grep " D " | cut -d' ' -f3 | grep -v "\$_NS" | grep -v "\$_UI" | sed -e 's/_\(.*\)/#ifndef \1\'$'\n''#define \1 __NS_SYMBOL(\1)\'$'\n''#endif\'$'\n''/g' >> $header
nm $CODESIGNING_FOLDER_PATH | sort | uniq | grep " S " | cut -d' ' -f3 | grep -v "\$_NS" | grep -v ".eh" | grep -v "\$_UI" | grep -v "OBJC_" | sed -e 's/_\(.*\)/#ifndef \1\'$'\n''#define \1 __NS_SYMBOL(\1)\'$'\n''#endif\'$'\n''/g' >> $header
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