Fix #151 by adding a function to enable extension loading

Author: quinnj

docs/src/index.md

@@ -106,6 +106,9 @@ re-execute the query and position the iterator back at the begining of the resul
 
   List the indices that have been created in `db`
 
+* `SQLite.enable_load_extensions(db::SQLite.DB, enable::Bool=true)`
+
+  Enables extension loading (off by default) on the sqlite database `db`. Pass `false` as the second argument to disable.
 
 * `SQLite.register(db::SQLite.DB, func::Function; nargs::Int=-1, name::AbstractString=string(func), isdeterm::Bool=true)`
 

src/SQLite.jl

@@ -437,4 +437,13 @@ returns the auto increment id of the last row
 """
 last_insert_rowid(db::DB) = sqlite3_last_insert_rowid(db.handle)
 
+"""
+`SQLite.enable_load_extension(db, enable::Bool=true)`
+
+Enables extension loading (off by default) on the sqlite database `db`. Pass `false` as the second argument to disable.
+"""
+function enable_load_extension(db, enable::Bool=true)
+   ccall((:sqlite3_enable_load_extension, SQLite.libsqlite), Cint, (Ptr{Cvoid}, Cint), db.handle, enable)
+end
+
 end # module

test/runtests.jl

@@ -23,8 +23,6 @@ cp(dbfile, dbfile2; force=true)
 chmod(dbfile2, 0o777)
 db = SQLite.DB(dbfile2)
 
-@testset "SQLite" begin
-
 # regular SQLite tests
 ds = SQLite.Query(db, "SELECT name FROM sqlite_master WHERE type='table';") |> columntable
 @test length(ds) == 1
@@ -293,4 +291,4 @@ SQLite.execute!(q)
 SQLite.bind!(q, 1, "a")
 @test_throws SQLite.SQLiteException SQLite.execute!(q)
 
-end #@testset
+@test SQLite.@OK SQLite.enable_load_extension(db)