require 'formula' class SqliteFunctions < Formula url 'http://www.sqlite.org/contrib/download/extension-functions.c?get=25', :using => NoUnzipCurlDownloadStrategy md5 '3a32bfeace0d718505af571861724a43' version '2010-01-06' end class Sqlite < Formula homepage 'http://sqlite.org/' url 'http://www.sqlite.org/sqlite-autoconf-3070701.tar.gz' md5 '554026fe7fac47b1cf61c18d5fe43419' version '3.7.7.1' def options [ ["--with-rtree", "Enables the R*Tree index module"], ["--with-fts", "Enables the FTS Module"], ["--universal", "Build a universal binary."], ["--with-functions", "Enables more math and string functions for SQL queries."] ] end def install ENV.append "CFLAGS", "-DSQLITE_ENABLE_RTREE=1" if ARGV.include? "--with-rtree" ENV.append "CPPFLAGS","-DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS" if ARGV.include? "--with-fts" ENV.universal_binary if ARGV.build_universal? system "./configure", "--prefix=#{prefix}", "--disable-dependency-tracking", (ARGV.include? "--with-functions") ? "--enable-dynamic-extensions" : "" system "make install" if ARGV.include? "--with-functions" d=Pathname.getwd SqliteFunctions.new.brew { mv 'extension-functions.c?get=25', d + 'extension-functions.c' } system ENV.cc, "-fno-common", "-dynamiclib", "extension-functions.c", "-o", "libsqlitefunctions.dylib", *ENV.cflags.split lib.install "libsqlitefunctions.dylib" end end if ARGV.include? "--with-functions" def caveats <<-EOS.undent Usage instructions for applications calling the sqlite3 API functions: In your application, call sqlite3_enable_load_extension(db,1) to allow loading external libraries. Then load the library libsqlitefunctions using sqlite3_load_extension; the third argument should be 0. See http://www.sqlite.org/cvstrac/wiki?p=LoadableExtensions. Select statements may now use these functions, as in SELECT cos(radians(inclination)) FROM satsum WHERE satnum = 25544; Usage instructions for the sqlite3 program: If the program is built so that loading extensions is permitted, the following will work: sqlite> SELECT load_extension('#{lib}/libsqlitefunctions.dylib'); sqlite> select cos(radians(45)); 0.707106781186548 EOS end end end