jc/docs/utils.md

utils

jc - JSON CLI output utility utils

warning_message

warning_message(message)

Prints a warning message for non-fatal issues

Parameters:

message:        (string) text of message

Returns:

None - just prints output to STDERR

error_message

error_message(message)

Prints an error message for fatal issues

Parameters:

message:        (string) text of message

Returns:

None - just prints output to STDERR

compatibility

compatibility(mod_name, compatible)

Checks for the parser's compatibility with the running OS platform.

Parameters:

mod_name:       (string) __name__ of the calling module

compatible:     (list) sys.platform name(s) compatible with the parser
                compatible options:
                linux, darwin, cygwin, win32, aix, freebsd

Returns:

None - just prints output to STDERR

has_data

has_data(data)

Checks if the input contains data. If there are any non-whitespace characters then return True, else return False

Parameters:

data:        (string) input to check whether it contains data

Returns:

Boolean      True if input string (data) contains non-whitespace characters, otherwise False

convert_to_int

convert_to_int(value)

Converts string and float input to int. Strips all non-numeric characters from strings.

Parameters:

value:          (string/integer/float) Input value

Returns:

integer/None    Integer if successful conversion, otherwise None

convert_to_float

convert_to_float(value)

Converts string and int input to float. Strips all non-numeric characters from strings.

Parameters:

value:          (string) Input value

Returns:

float/None      Float if successful conversion, otherwise None

convert_to_bool

convert_to_bool(value)

Converts string, integer, or float input to boolean by checking for 'truthy' values

Parameters:

value:          (string/integer/float) Input value

Returns:

True/False      False unless a 'truthy' number or string is found ('y', 'yes', 'true', '1', 1, -1, etc.)

stream_success

stream_success(output_line, quiet)

add _meta object to output line if -q (quiet) option is used

stream_error

stream_error(e, quiet, line)

reraise the stream exception with annotation or print an error _meta field if quiet=True

timestamp

timestamp(datetime_string)

Input a date-time text string of several formats and convert to a naive or timezone-aware epoch timestamp in UTC

Parameters:

datetime_string:    (str)   a string representation of a date-time in several supported formats

Attributes:

string              (str)   the input datetime string
format              (int)   the format rule that was used to decode the datetime string
naive               (int)   timestamp based on locally configured timezone. None if conversion fails
utc                 (int)   aware timestamp only if UTC timezone detected in datetime string. None if conversion fails