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from peewee import sqlite3
def json_installed():
if sqlite3.sqlite_version_info < (3, 9, 0):
return False
# Test in-memory DB to determine if the FTS5 extension is installed.
tmp_db = sqlite3.connect(':memory:')
try:
tmp_db.execute('select json(?)', (1337,))
except:
return False
finally:
tmp_db.close()
return True
def json_patch_installed():
return sqlite3.sqlite_version_info >= (3, 18, 0)
def compile_option(p):
if not hasattr(compile_option, '_pragma_cache'):
conn = sqlite3.connect(':memory:')
curs = conn.execute('pragma compile_options')
opts = [opt.lower().split('=')[0].strip() for opt, in curs.fetchall()]
compile_option._pragma_cache = set(opts)
return p in compile_option._pragma_cache
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