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heimdal/lib/sqlite/gen-sqlite3-namespace.sh
2026-01-22 11:23:57 -06:00

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#!/bin/sh
#
# Generate sqlite3_namespace.h from sqlite3.c and sqlite3.h
#
# This script extracts all public SQLite3 symbols and generates a header
# that renames them with a heim_ prefix to avoid symbol conflicts.
#
# Usage: ./gen-sqlite3-namespace.sh [sqlite3.c] [sqlite3.h]
#
# Run this script after importing a new version of SQLite3.
set -e
SQLITE3_C="${1:-sqlite3.c}"
SQLITE3_H="${2:-sqlite3.h}"
OUTPUT="sqlite3_namespace.h"
if [ ! -f "$SQLITE3_C" ]; then
echo "Error: $SQLITE3_C not found" >&2
exit 1
fi
if [ ! -f "$SQLITE3_H" ]; then
echo "Error: $SQLITE3_H not found" >&2
exit 1
fi
# Extract symbols from SQLITE_API declarations in sqlite3.c
# This catches functions and variables like sqlite3_open, sqlite3_version, etc.
# Also catches sqlite3session_*, sqlite3changegroup_*, sqlite3rbu_*, etc.
grep '^SQLITE_API' "$SQLITE3_C" | grep -oE 'sqlite3[a-zA-Z0-9_]*' | sort -u > /tmp/sqlite_funcs.$$
# Extract type names from typedef declarations in sqlite3.h
grep -E '^typedef' "$SQLITE3_H" | grep -oE 'sqlite3[a-zA-Z0-9_]*' | sort -u > /tmp/sqlite_types.$$
# Also get sqlite_int64 and sqlite_uint64
grep -E '^typedef' "$SQLITE3_H" | grep -oE 'sqlite_[a-zA-Z0-9_]*' | sort -u >> /tmp/sqlite_types.$$
# Combine and deduplicate
cat /tmp/sqlite_funcs.$$ /tmp/sqlite_types.$$ | sort -u > /tmp/all_symbols.$$
# Clean up temp files on exit
trap "rm -f /tmp/sqlite_funcs.$$ /tmp/sqlite_types.$$ /tmp/all_symbols.$$" EXIT
# Count symbols
NUM_SYMBOLS=$(wc -l < /tmp/all_symbols.$$)
echo "Found $NUM_SYMBOLS symbols to rename"
# Generate the header
cat > "$OUTPUT" << 'HEADER_EOF'
/*
* Copyright (c) 2025 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* This header renames all public SQLite3 symbols to use a heim_ prefix
* to avoid symbol conflicts when both libheimsqlite and libsqlite3 are
* loaded in the same process.
*
* This file is auto-generated by gen-sqlite3-namespace.sh
* Regenerate after importing a new SQLite version:
*
* cd lib/sqlite && ./gen-sqlite3-namespace.sh
*/
#ifndef SQLITE3_NAMESPACE_H
#define SQLITE3_NAMESPACE_H
HEADER_EOF
# Generate the #define lines
while read sym; do
echo "#define $sym heim_$sym"
done < /tmp/all_symbols.$$ >> "$OUTPUT"
cat >> "$OUTPUT" << 'FOOTER_EOF'
#endif /* SQLITE3_NAMESPACE_H */
FOOTER_EOF
echo "Generated $OUTPUT with $NUM_SYMBOLS symbol renames"