2025-04-28 08:47:28 +08:00

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#!/bin/sh
# Convert standard input to a C char array, write to a file, then create an
# MD5 sum of that file and append said MD5 sum as char array to the file.
[ -n "$1" ] || exit 1
# Filter out whitespace, empty lines, and comments.
sanitize() {
sed 's/^[[:space:]]*//; /^$/d; /^\/\//d'
}
# Convert stdin to a \0-terminated char array.
dump() {
echo "static const char $1[] = {"
od -v -A n -t x1 | sed 's/[[:space:]]*\([[:alnum:]]\{2\}\)/0x\1, /g'
echo '0x00 };'
}
# Print MD5 hash w/o newline character to not embed the character in the array.
hash() {
# md5sum is not standard, so try different platform-specific alternatives.
{ md5sum "$1" || md5 -q "$1" || digest -a md5 "$1"; } 2>/dev/null |
cut -b -32 | tr -d '\n\r'
}
trap 'rm -f "$1.temp"' EXIT
sanitize | tee "$1.temp" |
dump 'x264_opencl_source' > "$1"
hash "$1.temp" |
dump 'x264_opencl_source_hash' >> "$1"