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MapLibreParticleLab/scripts/vendor/icu.sh

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#!/usr/bin/env bash
source "$(dirname "${BASH_SOURCE[0]}")/common.sh"
NAME=icu
VERSION=61.1
ROOT=icu/source
download "http://download.icu-project.org/files/icu4c/$VERSION/icu4c-${VERSION//./_}-src.tgz"
init
STRIP_COMPONENTS=2 extract_gzip "${ROOT}/common/*.h" "${ROOT}/common/*.cpp"
STRIP_COMPONENTS=1 extract_gzip "icu/LICENSE"
# List all files we want to extract
FILES=(
ushape.cpp
ubidi.cpp
ubidi_props.cpp
ubidiln.cpp
ubidiwrt.cpp
ustring.cpp
uinvchar.cpp
uchar.cpp
udataswp.cpp
umath.cpp
utrie2.cpp
utf_impl.cpp
utypes.cpp
cmemory.cpp
cstring.cpp
)
# Find dependencies for all of these files
echo ">> Finding dependencies..."
ALL=()
for FILE in "${FILES[@]}"; do
ALL+=($(cd "common" && $CXX -std=c++14 -I. -c "$FILE" -M | sed -e 's/^[a-z0-9._-]*: *//;s/ *\\$//'))
done
# Remove duplicates
IFS=$'\n' ALL=($(sort <<< "${ALL[*]}" | uniq | sed '/^\//d'))
unset IFS
echo ">> Copying files..."
mkdir -p src include/unicode
for FILE in "${ALL[@]}"; do
[[ "$FILE" = unicode/* ]] && DIR="include" || DIR="src"
# Copy file and replace #include "unicode/*" with #include <unicode/*> so that we can separate
# includes and source-only files.
sed 's/^#include \"\(unicode\/[^\"]\{1,\}\)\"/#include <\1>/' "common/$FILE" > "$DIR/$FILE"
done
# Apply patch from https://github.com/LibreOffice/core/blob/master/external/icu/icu4c-ubsan.patch.1
# Shifting signed int to a number greater than can be represented is undefined behavior
patch -p0 << PATCH
--- src/ubidiimp.h
+++ src/ubidiimp.h
@@ -198,8 +198,8 @@
/* in a Run, logicalStart will get this bit set if the run level is odd */
#define INDEX_ODD_BIT (1UL<<31)
-#define MAKE_INDEX_ODD_PAIR(index, level) ((index)|((int32_t)(level)<<31))
+#define MAKE_INDEX_ODD_PAIR(index, level) ((index)|((uint32_t)(level)<<31))
-#define ADD_ODD_BIT_FROM_LEVEL(x, level) ((x)|=((int32_t)(level)<<31))
+#define ADD_ODD_BIT_FROM_LEVEL(x, level) ((x)|=((uint32_t)(level)<<31))
#define REMOVE_ODD_BIT(x) ((x)&=~INDEX_ODD_BIT)
#define GET_INDEX(x) ((x)&~INDEX_ODD_BIT)
PATCH
rm -rf common
file_list include src -name "*.h" -o -name "*.cpp"