compilermmxapianapi.js

const execSync = require('child_process').execSync;
const { mkdirSync, existsSync } = require('fs');

const xapianDirArgName = '--xapiandir=';
const xapianDirArg = process.argv.find(arg => arg.indexOf(xapianDirArgName)===0);

if (xapianDirArg) {
  
  process.env.XAPIAN = xapianDirArg.substr(xapianDirArgName.length);
  console.log('XAPIAN', process.env.XAPIAN);
}

if(!process.env.XAPIAN) {
  console.error("Environment variable XAPIAN must be set to the location of xapian_core");
} else {
  try {
    console.log('Building Runbox Xapian webassembly library');
    if(!existsSync('dist')) {
      mkdirSync('dist');
    }
    execSync(`em++ -Oz -s DISABLE_EXCEPTION_CATCHING=0 -s USE_ZLIB=1 ` + 
      `-s "EXTRA_EXPORTED_RUNTIME_METHODS=['FS','cwrap','stringToUTF8','UTF8ToString','getValue']" ` +
      `-std=c++11 -s DEMANGLE_SUPPORT=1 -s ALLOW_MEMORY_GROWTH=1 ` +
      `-I$XAPIAN/include -I$XAPIAN -I$XAPIAN/common rmmxapianapi.cc $XAPIAN/.libs/libxapian.a ` +
      `-o dist/xapianasm.js -lidbfs.js -lnodefs.js`, { stdio: 'inherit' });
    console.log('Successful build of xapianasm.wasm and xapianasm.js');
  } catch(e) {
    console.error('Compile failed');
  }
}