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import re
import pexpect
from pgcli.main import COLOR_CODE_REGEX
import textwrap
try:
from StringIO import StringIO
except ImportError:
from io import StringIO
def expect_exact(context, expected, timeout):
timedout = False
try:
context.cli.expect_exact(expected, timeout=timeout)
except pexpect.TIMEOUT:
timedout = True
if timedout:
# Strip color codes out of the output.
actual = re.sub(r"\x1b\[([0-9A-Za-z;?])+[m|K]?", "", context.cli.before)
raise Exception(
textwrap.dedent(
"""\
Expected:
---
{0!r}
---
Actual:
---
{1!r}
---
Full log:
---
{2!r}
---
"""
).format(expected, actual, context.logfile.getvalue())
)
def expect_pager(context, expected, timeout):
formatted = expected if isinstance(expected, list) else [expected]
formatted = [
f"{context.conf['pager_boundary']}\r\n{t}{context.conf['pager_boundary']}\r\n"
for t in formatted
]
expect_exact(
context,
formatted,
timeout=timeout,
)
def run_cli(context, run_args=None, prompt_check=True, currentdb=None):
"""Run the process using pexpect."""
run_args = run_args or []
cli_cmd = context.conf.get("cli_command")
cmd_parts = [cli_cmd] + run_args
cmd = " ".join(cmd_parts)
context.cli = pexpect.spawnu(cmd, cwd=context.package_root)
context.logfile = StringIO()
context.cli.logfile = context.logfile
context.exit_sent = False
context.currentdb = currentdb or context.conf["dbname"]
context.cli.sendline(r"\pset pager always")
if prompt_check:
wait_prompt(context)
def wait_prompt(context):
"""Make sure prompt is displayed."""
prompt_str = "{0}>".format(context.currentdb)
expect_exact(context, [prompt_str + " ", prompt_str, pexpect.EOF], timeout=3)
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