def build_date_context(container):
"""
Builds the date context (i.e. @date.now, @date.today, ...)
"""
as_date = container.now.date()
as_datetime_str = conversions.to_string(container.now, container)
as_date_str = conversions.to_string(as_date, container)
return {
'*': as_datetime_str,
'now': as_datetime_str,
'today': as_date_str,
'tomorrow': conversions.to_string(as_date + timedelta(days=1), container),
'yesterday': conversions.to_string(as_date - timedelta(days=1), container)
}
def build_date_context(container):
"""
Builds the date context (i.e. @date.now, @date.today, ...)
"""
as_date = container.now.date()
as_datetime_str = conversions.to_string(container.now, container)
as_date_str = conversions.to_string(as_date, container)
return {
'*': as_datetime_str,
'now': as_datetime_str,
'today': as_date_str,
'tomorrow': conversions.to_string(as_date + timedelta(days=1), container),
'yesterday': conversions.to_string(as_date - timedelta(days=1), container)
}
def get_value_as_text(self, context):
"""
Gets the input value as text which can be matched by rules
:param context: the evaluation context
:return: the text value
"""
return conversions.to_string(self.value, context)
def build_context(self, run, container):
"""
Builds the evaluation context for this contact
:param run: the current run state
:param container: the containing evaluation context
:return: the context
"""
context = {
'*': self.get_display(run.org, False),
'name': self.name,
'first_name': self.get_first_name(run.org),
'tel_e164': self.get_urn_display(run.org, ContactUrn.Scheme.TEL, True),
'groups': ",".join(self.groups),
'uuid': self.uuid,
'language': self.language
}
# add all URNs
for scheme in ContactUrn.Scheme.__members__.values():
context[unicode(scheme.name).lower()] = self.get_urn_display(run.org, scheme, False)
# add all fields
for key, raw_value in self.fields.iteritems():
field = run.get_or_create_field(key)
if field and field.value_type == Field.ValueType.DATETIME:
as_datetime = conversions.to_datetime(raw_value, container)
value = conversions.to_string(as_datetime, container)
else:
value = raw_value
context[key] = value
return context
def rept(ctx, text, number_times):
"""
Repeats text a given number of times
"""
if number_times < 0:
raise ValueError("Number of times can't be negative")
return conversions.to_string(text, ctx) * conversions.to_integer(number_times, ctx)
def rept(ctx, text, number_times):
"""
Repeats text a given number of times
"""
if number_times < 0:
raise ValueError("Number of times can't be negative")
return conversions.to_string(text, ctx) * conversions.to_integer(number_times, ctx)
def datedif(ctx, start_date, end_date, unit):
"""
Calculates the number of days, months, or years between two dates.
"""
start_date = conversions.to_date(start_date, ctx)
end_date = conversions.to_date(end_date, ctx)
unit = conversions.to_string(unit, ctx).lower()
if start_date > end_date:
raise ValueError("Start date cannot be after end date")
if unit == 'y':
return relativedelta(end_date, start_date).years
elif unit == 'm':
delta = relativedelta(end_date, start_date)
return 12 * delta.years + delta.months
elif unit == 'd':
return (end_date - start_date).days
elif unit == 'md':
return relativedelta(end_date, start_date).days
elif unit == 'ym':
return relativedelta(end_date, start_date).months
elif unit == 'yd':
return (end_date - start_date.replace(year=end_date.year)).days
raise ValueError("Invalid unit value: %s" % unit)
def visit(self, runner, run, step, input):
if logger.isEnabledFor(logging.DEBUG):
logger.debug("Visiting rule set %s with input %s from contact %s"
% (self.uuid, unicode(input), run.contact.uuid))
input.consume()
context = run.build_context(runner, input)
match = self.find_matching_rule(runner, run, context)
if not match:
return None
rule, test_result = match
# get category in the flow base language
category = rule.category.get_localized_by_preferred([run.flow.base_language], "")
value_as_str = conversions.to_string(test_result.value, context)
result = RuleSet.Result(rule, value_as_str, category, input.get_value_as_text(context))
step.rule_result = result
run.update_value(self, result, input.time)
return rule.destination
def word_slice(ctx, text, start, stop=0, by_spaces=False):
"""
Extracts a substring spanning from start up to but not-including stop
"""
text = conversions.to_string(text, ctx)
start = conversions.to_integer(start, ctx)
stop = conversions.to_integer(stop, ctx)
by_spaces = conversions.to_boolean(by_spaces, ctx)
if start == 0:
raise ValueError("Start word cannot be zero")
elif start > 0:
start -= 1 # convert to a zero-based offset
if stop == 0: # zero is treated as no end
stop = None
elif stop > 0:
stop -= 1 # convert to a zero-based offset
words = __get_words(text, by_spaces)
selection = operator.getitem(words, slice(start, stop))
# re-combine selected words with a single space
return " ".join(selection)
def remove_first_word(ctx, text):
"""
Removes the first word from the given text string
"""
text = conversions.to_string(text, ctx).lstrip()
first = first_word(ctx, text)
return text[len(first):].lstrip() if first else ''
def datedif(ctx, start_date, end_date, unit):
"""
Calculates the number of days, months, or years between two dates.
"""
start_date = conversions.to_date(start_date, ctx)
end_date = conversions.to_date(end_date, ctx)
unit = conversions.to_string(unit, ctx).lower()
if start_date > end_date:
raise ValueError("Start date cannot be after end date")
if unit == 'y':
return relativedelta(end_date, start_date).years
elif unit == 'm':
delta = relativedelta(end_date, start_date)
return 12 * delta.years + delta.months
elif unit == 'd':
return (end_date - start_date).days
elif unit == 'md':
return relativedelta(end_date, start_date).days
elif unit == 'ym':
return relativedelta(end_date, start_date).months
elif unit == 'yd':
return (end_date - start_date.replace(year=end_date.year)).days
raise ValueError("Invalid unit value: %s" % unit)
def get_value_as_text(self, context):
"""
Gets the input value as text which can be matched by rules
:param context: the evaluation context
:return: the text value
"""
return conversions.to_string(self.value, context)
def word_slice(ctx, text, start, stop=0, by_spaces=False):
"""
Extracts a substring spanning from start up to but not-including stop
"""
text = conversions.to_string(text, ctx)
start = conversions.to_integer(start, ctx)
stop = conversions.to_integer(stop, ctx)
by_spaces = conversions.to_boolean(by_spaces, ctx)
if start == 0:
raise ValueError("Start word cannot be zero")
elif start > 0:
start -= 1 # convert to a zero-based offset
if stop == 0: # zero is treated as no end
stop = None
elif stop > 0:
stop -= 1 # convert to a zero-based offset
words = __get_words(text, by_spaces)
selection = operator.getitem(words, slice(start, stop))
# re-combine selected words with a single space
return ' '.join(selection)
def build_context(self, run, container):
"""
Builds the evaluation context for this contact
:param run: the current run state
:param container: the containing evaluation context
:return: the context
"""
context = {
'*': self.get_display(run.org, False),
'name': self.name,
'first_name': self.get_first_name(run.org),
'tel_e164': self.get_urn_display(run.org, ContactUrn.Scheme.TEL, True),
'groups': ",".join(self.groups),
'uuid': self.uuid,
'language': self.language
}
# add all URNs
for scheme in ContactUrn.Scheme.__members__.values():
context[unicode(scheme.name).lower()] = self.get_urn_display(run.org, scheme, False)
# add all fields
for key, raw_value in self.fields.iteritems():
field = run.get_or_create_field(key)
if field and field.value_type == Field.ValueType.DATETIME:
as_datetime = conversions.to_datetime(raw_value, container)
value = conversions.to_string(as_datetime, container)
else:
value = raw_value
context[key] = value
return context
def word_count(ctx, text, by_spaces=False):
"""
Returns the number of words in the given text string
"""
text = conversions.to_string(text, ctx)
by_spaces = conversions.to_boolean(by_spaces, ctx)
return len(__get_words(text, by_spaces))
def visit(self, runner, run, step, input):
if logger.isEnabledFor(logging.DEBUG):
logger.debug("Visiting rule set %s with input %s from contact %s" %
(self.uuid, unicode(input), run.contact.uuid))
input.consume()
context = run.build_context(runner, input)
match = self.find_matching_rule(runner, run, context)
if not match:
return None
rule, test_result = match
# get category in the flow base language
category = rule.category.get_localized_by_preferred(
[run.get_flow().base_language], "")
value_as_str = conversions.to_string(test_result.value, context)
result = RuleSet.Result(step.get_flow(), rule, value_as_str, category,
input.get_value_as_text(context), input.media)
step.rule_result = result
run.update_value(self, result, input.time)
return rule.destination
def word_count(ctx, text, by_spaces=False):
"""
Returns the number of words in the given text string
"""
text = conversions.to_string(text, ctx)
by_spaces = conversions.to_boolean(by_spaces, ctx)
return len(__get_words(text, by_spaces))
def remove_first_word(ctx, text):
"""
Removes the first word from the given text string
"""
text = conversions.to_string(text, ctx).lstrip()
first = first_word(ctx, text)
return text[len(first) :].lstrip() if first else ""
def _unicode(ctx, text):
"""
Returns a numeric code for the first character in a text string
"""
text = conversions.to_string(text, ctx)
if len(text) == 0:
raise ValueError("Text can't be empty")
return ord(text[0])
def left(ctx, text, num_chars):
"""
Returns the first characters in a text string
"""
num_chars = conversions.to_integer(num_chars, ctx)
if num_chars < 0:
raise ValueError("Number of chars can't be negative")
return conversions.to_string(text, ctx)[0:num_chars]
def concatenate(ctx, *text):
"""
Joins text strings into one text string
"""
result = ''
for arg in text:
result += conversions.to_string(arg, ctx)
return result
def build_context(self, container):
return {
'*': self.value,
'value': self.value,
'category': self.category,
'text': self.text,
'time': conversions.to_string(self.time, container)
}
def concatenate(ctx, *text):
"""
Joins text strings into one text string
"""
result = ''
for arg in text:
result += conversions.to_string(arg, ctx)
return result
def build_context(self, container):
return {
'*': self.value,
'value': self.value,
'category': self.category,
'text': self.text,
'time': conversions.to_string(self.time, container)
}
def left(ctx, text, num_chars):
"""
Returns the first characters in a text string
"""
num_chars = conversions.to_integer(num_chars, ctx)
if num_chars < 0:
raise ValueError("Number of chars can't be negative")
return conversions.to_string(text, ctx)[0:num_chars]
def _unicode(ctx, text):
"""
Returns a numeric code for the first character in a text string
"""
text = conversions.to_string(text, ctx)
if len(text) == 0:
raise ValueError("Text can't be empty")
return ord(text[0])
def invoke_function(self, ctx, name, arguments):
"""
Invokes the given function
:param ctx: the evaluation context
:param name: the function name (case insensitive)
:param arguments: the arguments to be passed to the function
:return: the function return value
"""
from temba_expressions import EvaluationError, conversions
# find function with given name
func = self.get_function(name)
if func is None:
raise EvaluationError("Undefined function: %s" % name)
args, varargs, defaults = self._get_arg_spec(func)
call_args = []
passed_args = list(arguments)
for arg in args:
if arg == 'ctx':
call_args.append(ctx)
elif passed_args:
call_args.append(passed_args.pop(0))
elif arg in defaults:
call_args.append(defaults[arg])
else:
raise EvaluationError(
"Too few arguments provided for function %s" % name)
if varargs is not None:
call_args.extend(passed_args)
passed_args = []
# any unused arguments?
if passed_args:
raise EvaluationError(
"Too many arguments provided for function %s" % name)
try:
return func(*call_args)
except Exception as e:
pretty_args = []
for arg in arguments:
if isinstance(arg, str):
pretty = '"%s"' % arg
else:
try:
pretty = conversions.to_string(arg, ctx)
except EvaluationError:
pretty = str(arg)
pretty_args.append(pretty)
raise EvaluationError(
"Error calling function %s with arguments %s" %
(name, ', '.join(pretty_args)), e)
def regex_group(ctx, text, pattern, group_num):
"""
Tries to match the text with the given pattern and returns the value of matching group
"""
text = conversions.to_string(text, ctx)
pattern = conversions.to_string(pattern, ctx)
group_num = conversions.to_integer(group_num, ctx)
expression = regex.compile(
pattern, regex.UNICODE | regex.IGNORECASE | regex.MULTILINE | regex.V0)
match = expression.search(text)
if not match:
return ""
if group_num < 0 or group_num > len(match.groups()):
raise ValueError("No such matching group %d" % group_num)
return match.group(group_num)
def substitute(ctx, text, old_text, new_text, instance_num=-1):
"""
Substitutes new_text for old_text in a text string
"""
text = conversions.to_string(text, ctx)
old_text = conversions.to_string(old_text, ctx)
new_text = conversions.to_string(new_text, ctx)
if instance_num < 0:
return text.replace(old_text, new_text)
else:
splits = text.split(old_text)
output = splits[0]
instance = 1
for split in splits[1:]:
sep = new_text if instance == instance_num else old_text
output += sep + split
instance += 1
return output
def substitute(ctx, text, old_text, new_text, instance_num=-1):
"""
Substitutes new_text for old_text in a text string
"""
text = conversions.to_string(text, ctx)
old_text = conversions.to_string(old_text, ctx)
new_text = conversions.to_string(new_text, ctx)
if instance_num < 0:
return text.replace(old_text, new_text)
else:
splits = text.split(old_text)
output = splits[0]
instance = 1
for split in splits[1:]:
sep = new_text if instance == instance_num else old_text
output += sep + split
instance += 1
return output
def evaluate(self, runner, run, context, text):
matches = []
for test in self.tests:
result = test.evaluate(runner, run, context, text)
if result.matched:
matches.append(conversions.to_string(result.value, context))
else:
return Test.Result.NO_MATCH
# all came out true, we are true
return Test.Result.match(" ".join(matches))
def right(ctx, text, num_chars):
"""
Returns the last characters in a text string
"""
num_chars = conversions.to_integer(num_chars, ctx)
if num_chars < 0:
raise ValueError("Number of chars can't be negative")
elif num_chars == 0:
return ''
else:
return conversions.to_string(text, ctx)[-num_chars:]
def evaluate(self, runner, run, context, text):
matches = []
for test in self.tests:
result = test.evaluate(runner, run, context, text)
if result.matched:
matches.append(conversions.to_string(result.value, context))
else:
return Test.Result.NO_MATCH
# all came out true, we are true
return Test.Result.match(" ".join(matches))
def right(ctx, text, num_chars):
"""
Returns the last characters in a text string
"""
num_chars = conversions.to_integer(num_chars, ctx)
if num_chars < 0:
raise ValueError("Number of chars can't be negative")
elif num_chars == 0:
return ''
else:
return conversions.to_string(text, ctx)[-num_chars:]
def invoke_function(self, ctx, name, arguments):
"""
Invokes the given function
:param ctx: the evaluation context
:param name: the function name (case insensitive)
:param arguments: the arguments to be passed to the function
:return: the function return value
"""
from temba_expressions import EvaluationError, conversions
# find function with given name
func = self.get_function(name)
if func is None:
raise EvaluationError("Undefined function: %s" % name)
args, varargs, defaults = self._get_arg_spec(func)
call_args = []
passed_args = list(arguments)
for arg in args:
if arg == 'ctx':
call_args.append(ctx)
elif passed_args:
call_args.append(passed_args.pop(0))
elif arg in defaults:
call_args.append(defaults[arg])
else:
raise EvaluationError("Too few arguments provided for function %s" % name)
if varargs is not None:
call_args.extend(passed_args)
passed_args = []
# any unused arguments?
if passed_args:
raise EvaluationError("Too many arguments provided for function %s" % name)
try:
return func(*call_args)
except Exception, e:
pretty_args = []
for arg in arguments:
if isinstance(arg, basestring):
pretty = '"%s"' % arg
else:
try:
pretty = conversions.to_string(arg, ctx)
except EvaluationError:
pretty = unicode(arg)
pretty_args.append(pretty)
raise EvaluationError("Error calling function %s with arguments %s" % (name, ', '.join(pretty_args)), e)
def build_context(self, container, contact_context):
"""
Builds the evaluation context for this input
:param container: the evaluation context
:param contact_context: the context
:return:
"""
as_text = self.get_value_as_text(container)
return {
'*': as_text,
'value': as_text,
'time': conversions.to_string(self.time, container),
'contact': contact_context
}
def build_context(self, container, contact_context):
"""
Builds the evaluation context for this input
:param container: the evaluation context
:param contact_context: the context
:return:
"""
as_text = self.get_value_as_text(container)
return {
'*': as_text,
'value': as_text,
'time': conversions.to_string(self.time, container),
'contact': contact_context
}
def read_digits(ctx, text):
"""
Formats digits in text for reading in TTS
"""
def chunk(value, chunk_size):
return [
value[i:i + chunk_size] for i in range(0, len(value), chunk_size)
]
text = conversions.to_string(text, ctx).strip()
if not text:
return ''
# trim off the plus for phone numbers
if text[0] == '+':
text = text[1:]
length = len(text)
# ssn
if length == 9:
result = ' '.join(text[:3])
result += ' , ' + ' '.join(text[3:5])
result += ' , ' + ' '.join(text[5:])
return result
# triplets, most international phone numbers
if length % 3 == 0 and length > 3:
chunks = chunk(text, 3)
return ' '.join(','.join(chunks))
# quads, credit cards
if length % 4 == 0:
chunks = chunk(text, 4)
return ' '.join(','.join(chunks))
# otherwise, just put a comma between each number
return ','.join(text)
def read_digits(ctx, text):
"""
Formats digits in text for reading in TTS
"""
def chunk(value, chunk_size):
return [value[i : i + chunk_size] for i in range(0, len(value), chunk_size)]
text = conversions.to_string(text, ctx).strip()
if not text:
return ""
# trim off the plus for phone numbers
if text[0] == "+":
text = text[1:]
length = len(text)
# ssn
if length == 9:
result = " ".join(text[:3])
result += " , " + " ".join(text[3:5])
result += " , " + " ".join(text[5:])
return result
# triplets, most international phone numbers
if length % 3 == 0 and length > 3:
chunks = chunk(text, 3)
return " ".join(",".join(chunks))
# quads, credit cards
if length % 4 == 0:
chunks = chunk(text, 4)
return " ".join(",".join(chunks))
# otherwise, just put a comma between each number
return ",".join(text)
def proper(ctx, text):
"""
Capitalizes the first letter of every word in a text string
"""
return conversions.to_string(text, ctx).title()
def lower(ctx, text):
"""
Converts a text string to lowercase
"""
return conversions.to_string(text, ctx).lower()
def _len(ctx, text):
"""
Returns the number of characters in a text string
"""
return len(conversions.to_string(text, ctx))
def format_location(ctx, text):
"""
Takes a single parameter (administrative boundary as a string) and returns the name of the leaf boundary
"""
text = conversions.to_string(text, ctx)
return text.split(">")[-1].strip()
def clean(ctx, text):
"""
Removes all non-printable characters from a text string
"""
text = conversions.to_string(text, ctx)
return ''.join([c for c in text if ord(c) >= 32])
def upper(ctx, text):
"""
Converts a text string to uppercase
"""
return conversions.to_string(text, ctx).upper()
def upper(ctx, text):
"""
Converts a text string to uppercase
"""
return conversions.to_string(text, ctx).upper()
def clean(ctx, text):
"""
Removes all non-printable characters from a text string
"""
text = conversions.to_string(text, ctx)
return ''.join([c for c in text if ord(c) >= 32])
def _len(ctx, text):
"""
Returns the number of characters in a text string
"""
return len(conversions.to_string(text, ctx))
def lower(ctx, text):
"""
Converts a text string to lowercase
"""
return conversions.to_string(text, ctx).lower()
def proper(ctx, text):
"""
Capitalizes the first letter of every word in a text string
"""
return conversions.to_string(text, ctx).title()
