Moved CLI arg processing into config package

nigel.stanger / Handbook

Browse code Moved CLI arg processing into config package master
1 parent fd1a6da commit 6fd6cb2dcf0e28aece5f5c214ab0cfb86b75e134 Nigel Stanger authored on 18 Nov 2019

Patch

Showing 3 changed files

Ignore Space Show notes View calendar/generate_dates/app.py
import argparse import copy import pathlib import sys from generate_dates import TeachingCalendar, config, templates from generate_dates.config import parse_command_line class PeriodError(KeyError): pass class PaperError(KeyError): pass class LectureStyleError(KeyError): pass def parse_config(config, args): """Validate and filter the top-level configuration. Returns separate references to the period configuration and the paper configuration, as applicable. (Yes, the period configuration includes the paper configuration, but it may also include other papers, so it's more convenient to return a separate reference for the specified paper.) The configuration file will normally contain specifications for several teaching periods and papers. We don't need all of this: usually we're only interested in one teaching period and one paper (if relevant). """ period_config = paper_config = None # this is all irrelevant if we're going ISO style if args.style != "iso": if args.period not in config.keys(): raise PeriodError() period_config = config[args.period] # raises KeyError if source key is missing period_config["name"] and period_config["weeks"] # papers are irrelevant in "calendar" style if args.style == "lecture": if "papers" in period_config.keys(): if args.paper in period_config["papers"].keys(): paper_config = period_config["papers"][args.paper] # we expect at least a "lectures" entry paper_config["lectures"] else: raise PaperError() else: raise LectureStyleError() return period_config, paper_config def run(): args = parse_command_line() if args.debug: print("DEBUG: args: {0}".format(args)) try: period_config, paper_config = parse_config(args.config, args) if args.debug: print("DEBUG: period config: {0}".format(period_config)) print("DEBUG: paper config: {0}".format(paper_config)) # priority: year on command line (defaults to current year), # year in config if period_config: args.year = ( args.config["year"] if "year" in args.config.keys() else args.year) cal = TeachingCalendar.TeachingCalendar( args.year, args.period, args.paper, period_config, paper_config) print("Period = {p}".format(p=args.period)) print(cal.calendar()) print(cal.lecture_dates()) except LectureStyleError as e: print("ERROR: 'lecture' style was requested but {c} contains no " "papers for {t}.".format(c=args.config, t=args.period)) except PaperError as e: print("ERROR: no entry in {c} for paper {p} ({t}).".format( c=args.config, p=args.paper, t=args.period)) except PeriodError as e: print("ERROR: no entry in {c} for teaching period " "{p}.".format(c=args.config_file, p=args.period)) except KeyError as e: print("ERROR: teaching period {p} in {c} is missing required " "key {k}.".format(p=args.period, c=args.config, k=e)) #!/usr/bin/env python3 import argparse import copy import datetime import importlib.resources as pkg_resources import pathlib import sys import yaml from generate_dates import TeachingCalendar, config, templates class PeriodError(KeyError): pass class PaperError(KeyError): pass class LectureStyleError(KeyError): pass def parse_command_line(): """Parse command-line arguments. Example command lines: generate_dates --style calendar --format latex --year 2020 --period S1 --paper INFO201 generate_dates --style lecture --format xml --period S2 --paper INFO202 """ format_map = { "t": "text", "text": "text", "l": "latex", "latex": "latex", "x": "xml", "xml": "xml", } style_map = { "c": "calendar", "calendar": "calendar", "l": "lecture", "lecture": "lecture", "i": "iso", "iso": "iso", } parser = argparse.ArgumentParser( prog="generate_dates", description="") parser.add_argument( "--config", "-c", default=None, dest="config_file", help="file name of the configuration file " "[default 'default.yml' in generate_dates.config]") parser.add_argument( "--debug", "-d", action='store_true', help="enable debugging output") parser.add_argument( "--format", "-f", default="latex", choices=["text", "t", "latex", "l", "xml", "x"], help="output format [default 'latex']") parser.add_argument( "--output", "-o", type=argparse.FileType("w", encoding="UTF-8"), help="file name to write the output to; existing " "files of the same name will be overwritten!") parser.add_argument( "--paper", "-p", default=None, help="paper code (e.g., INFO201) [required for 'lecture' style, " "ignored otherwise]") parser.add_argument( "--style", "-s", default="calendar", choices=["calendar", "c", "lecture", "l", "iso", "i"], help="output style: 'calendar' for teaching calendars in course " "outlines, 'lecture' for individual lecture dates, or 'iso'" "for dates across the entire ISO-8601 year [default 'calendar']") parser.add_argument( "--teaching-period", "-t", default=None, choices=["SS", "S1", "S2", "FY"], dest="period", help="teaching period [required]") parser.add_argument( "--year", "-y", type=int, default=datetime.date.today().year, help=("the year to generate dates for [default {y}]".format( y=datetime.date.today().year))) args = parser.parse_args() # normalise format and style args.format = format_map[args.format] args.style = style_map[args.style] # Load the default config if none is explicitly specified. if not args.config_file: args.config = yaml.safe_load( pkg_resources.read_text(config, "default.yml")) else: with open(args.config_file) as cfg: args.config = yaml.safe_load(cfg.read()) if args.style == "calendar": # --paper is irrelevant if args.paper: print("generate_dates: warning: --paper/-p is ignored for " "'calendar' style") # --teaching-period is required if not args.period: parser.exit(2, "generate_dates: error: --teaching-period/-t " "is required for 'calendar' style\n") elif args.style == "iso": # both --paper and --teaching-period are irrelevant if args.paper or args.period: print("generate_dates: warning: --paper/-p and " "--teaching-period/-t are ignored for 'iso' style") elif args.style == "lecture": # both --paper and --teaching-period are required if not args.paper: parser.exit(2, message="generate_dates: error: -paper/-p and " "--teaching-period/-t are required for 'lecture' style\n") # --teaching-period must be specified if --style is "calendar" or "lecture" else: pass return args def parse_config(config, args): """Validate and filter the top-level configuration. Returns separate references to the period configuration and the paper configuration, as applicable. (Yes, the period configuration includes the paper configuration, but it may also include other papers, so it's more convenient to return a separate reference for the specified paper.) The configuration file will normally contain specifications for several teaching periods and papers. We don't need all of this: usually we're only interested in one teaching period and one paper (if relevant). """ period_config = paper_config = None # this is all irrelevant if we're going ISO style if args.style != "iso": if args.period not in config.keys(): raise PeriodError() period_config = config[args.period] # raises KeyError if source key is missing period_config["name"] and period_config["weeks"] # papers are irrelevant in "calendar" style if args.style == "lecture": if "papers" in period_config.keys(): if args.paper in period_config["papers"].keys(): paper_config = period_config["papers"][args.paper] # we expect at least a "lectures" entry paper_config["lectures"] else: raise PaperError() else: raise LectureStyleError() return period_config, paper_config def run(): args = parse_command_line() if args.debug: print("DEBUG: args: {0}".format(args)) try: period_config, paper_config = parse_config(args.config, args) if args.debug: print("DEBUG: period config: {0}".format(period_config)) print("DEBUG: paper config: {0}".format(paper_config)) # priority: year on command line (defaults to current year), # year in config if period_config: args.year = ( args.config["year"] if "year" in args.config.keys() else args.year) cal = TeachingCalendar.TeachingCalendar( args.year, args.period, args.paper, period_config, paper_config) print("Period = {p}".format(p=args.period)) print(cal.calendar()) print(cal.lecture_dates()) except LectureStyleError as e: print("ERROR: 'lecture' style was requested but {c} contains no " "papers for {t}.".format(c=args.config, t=args.period)) except PaperError as e: print("ERROR: no entry in {c} for paper {p} ({t}).".format( c=args.config, p=args.paper, t=args.period)) except PeriodError as e: print("ERROR: no entry in {c} for teaching period " "{p}.".format(c=args.config_file, p=args.period)) except KeyError as e: print("ERROR: teaching period {p} in {c} is missing required " "key {k}.".format(p=args.period, c=args.config, k=e))

Ignore Space Show notes View

calendar/generate_dates/app.py

import argparse
import copy
import pathlib
import sys

from generate_dates import TeachingCalendar, config, templates
from generate_dates.config import parse_command_line

class PeriodError(KeyError):
    pass

class PaperError(KeyError):
    pass

class LectureStyleError(KeyError):
    pass

def parse_config(config, args):
    """Validate and filter the top-level configuration.

Returns separate references to the period configuration and the
    paper configuration, as applicable. (Yes, the period configuration
    includes the paper configuration, but it may also include other
    papers, so it's more convenient to return a separate reference
    for the specified paper.)

The configuration file will normally contain specifications for
    several teaching periods and papers. We don't need all of this:
    usually we're only interested in one teaching period and one
    paper (if relevant).
    """
    period_config = paper_config = None
    # this is all irrelevant if we're going ISO style
    if args.style != "iso":
        if args.period not in config.keys():
            raise PeriodError()

period_config = config[args.period]
        # raises KeyError if source key is missing
        period_config["name"] and period_config["weeks"]

# papers are irrelevant in "calendar" style
        if args.style == "lecture":
            if "papers" in period_config.keys():
                if args.paper in period_config["papers"].keys():
                    paper_config = period_config["papers"][args.paper]
                    # we expect at least a "lectures" entry
                    paper_config["lectures"]
                else:
                    raise PaperError()
            else:
                raise LectureStyleError()
    
    return period_config, paper_config

def run():
    args = parse_command_line()
    if args.debug:
        print("DEBUG: args: {0}".format(args))

try:
        period_config, paper_config = parse_config(args.config, args)
        if args.debug:
            print("DEBUG: period config: {0}".format(period_config))
            print("DEBUG: paper config: {0}".format(paper_config))
        # priority: year on command line (defaults to current year),
        # year in config
        if period_config:
            args.year = (
                args.config["year"] if "year" in args.config.keys()
                else args.year)
        cal = TeachingCalendar.TeachingCalendar(
            args.year, args.period, args.paper,
            period_config, paper_config)
        print("Period = {p}".format(p=args.period))
        print(cal.calendar())
        print(cal.lecture_dates())
    except LectureStyleError as e:
        print("ERROR: 'lecture' style was requested but {c} contains no "
            "papers for {t}.".format(c=args.config, t=args.period))
    except PaperError as e:
        print("ERROR: no entry in {c} for paper {p} ({t}).".format(
            c=args.config, p=args.paper, t=args.period))
    except PeriodError as e:
        print("ERROR: no entry in {c} for teaching period "
            "{p}.".format(c=args.config_file, p=args.period))
    except KeyError as e:
        print("ERROR: teaching period {p} in {c} is missing required "
            "key {k}.".format(p=args.period, c=args.config, k=e))

#!/usr/bin/env python3

import argparse
import copy
import datetime
import importlib.resources as pkg_resources
import pathlib
import sys
import yaml

from generate_dates import TeachingCalendar, config, templates

class PeriodError(KeyError):
    pass

class PaperError(KeyError):
    pass

class LectureStyleError(KeyError):
    pass

def parse_command_line():
    """Parse command-line arguments.

Example command lines:
    generate_dates --style calendar --format latex --year 2020 --period S1 --paper INFO201
    generate_dates --style lecture --format xml --period S2 --paper INFO202
    """
    format_map = {
        "t": "text",
        "text": "text",
        "l": "latex",
        "latex": "latex",
        "x": "xml",
        "xml": "xml",
    }
    style_map = {
        "c": "calendar",
        "calendar": "calendar",
        "l": "lecture",
        "lecture": "lecture",
        "i": "iso",
        "iso": "iso",
    }

parser = argparse.ArgumentParser(
        prog="generate_dates",
        description="")
    
    parser.add_argument(
        "--config", "-c", default=None, dest="config_file",
        help="file name of the configuration file "
            "[default 'default.yml' in generate_dates.config]")
    
    parser.add_argument(
        "--debug", "-d", action='store_true',
        help="enable debugging output")
    
    parser.add_argument(
        "--format", "-f", default="latex",
        choices=["text", "t", "latex", "l", "xml", "x"],
        help="output format [default 'latex']")
    
    parser.add_argument(
        "--output", "-o",
        type=argparse.FileType("w", encoding="UTF-8"),
        help="file name to write the output to; existing "
            "files of the same name will be overwritten!")
    
    parser.add_argument(
        "--paper", "-p", default=None,
        help="paper code (e.g., INFO201) [required for 'lecture' style, "
            "ignored otherwise]")
    
    parser.add_argument(
        "--style", "-s", default="calendar",
        choices=["calendar", "c", "lecture", "l", "iso", "i"],
        help="output style: 'calendar' for teaching calendars in course "
            "outlines, 'lecture' for individual lecture dates, or 'iso'"
            "for dates across the entire ISO-8601 year [default 'calendar']")
    
    parser.add_argument(
        "--teaching-period", "-t", default=None,
        choices=["SS", "S1", "S2", "FY"], dest="period",
        help="teaching period [required]")
    
    parser.add_argument(
        "--year", "-y", type=int, default=datetime.date.today().year,
        help=("the year to generate dates for [default {y}]".format(
            y=datetime.date.today().year)))
    
    args = parser.parse_args()
    # normalise format and style
    args.format = format_map[args.format]
    args.style = style_map[args.style]

# Load the default config if none is explicitly specified.
    if not args.config_file:
        args.config = yaml.safe_load(
            pkg_resources.read_text(config, "default.yml"))
    else:
        with open(args.config_file) as cfg:
            args.config = yaml.safe_load(cfg.read())

if args.style == "calendar":
        # --paper is irrelevant
        if args.paper:
            print("generate_dates: warning: --paper/-p is ignored for "
                "'calendar' style")
        # --teaching-period is required
        if not args.period:
            parser.exit(2, "generate_dates: error: --teaching-period/-t "
                "is required for 'calendar' style\n")

elif args.style == "iso":
        # both --paper and --teaching-period are irrelevant
        if args.paper or args.period:
            print("generate_dates: warning: --paper/-p and "
                "--teaching-period/-t are ignored for 'iso' style")

elif args.style == "lecture":
        # both --paper and --teaching-period are required
        if not args.paper:
            parser.exit(2, message="generate_dates: error: -paper/-p and "
                "--teaching-period/-t are required for 'lecture' style\n")
    
    # --teaching-period must be specified if --style is "calendar" or "lecture"
    else:
        pass
    
    return args

def parse_config(config, args):
    """Validate and filter the top-level configuration.

period_config = config[args.period]
        # raises KeyError if source key is missing
        period_config["name"] and period_config["weeks"]

def run():
    args = parse_command_line()
    if args.debug:
        print("DEBUG: args: {0}".format(args))

Ignore Space Show notes View calendar/generate_dates/config/__init__.py
from generate_dates.config.cli import parse_command_line

Ignore Space Show notes View calendar/generate_dates/config/cli.py 0 → 100644
import argparse import datetime import importlib.resources as pkg_resources import yaml from generate_dates import config def parse_command_line(): """Parse command-line arguments. Example command lines: generate_dates --style calendar --format latex --year 2020 --period S1 --paper INFO201 generate_dates --style lecture --format xml --period S2 --paper INFO202 """ format_map = { "t": "text", "text": "text", "l": "latex", "latex": "latex", "x": "xml", "xml": "xml", } style_map = { "c": "calendar", "calendar": "calendar", "l": "lecture", "lecture": "lecture", "i": "iso", "iso": "iso", } parser = argparse.ArgumentParser( prog="generate_dates", description="") parser.add_argument( "--config", "-c", default=None, dest="config_file", help="file name of the configuration file " "[default 'default.yml' in generate_dates.config]") parser.add_argument( "--debug", "-d", action='store_true', help="enable debugging output") parser.add_argument( "--format", "-f", default="latex", choices=["text", "t", "latex", "l", "xml", "x"], help="output format [default 'latex']") parser.add_argument( "--output", "-o", type=argparse.FileType("w", encoding="UTF-8"), help="file name to write the output to; existing " "files of the same name will be overwritten!") parser.add_argument( "--paper", "-p", default=None, help="paper code (e.g., INFO201) [required for 'lecture' style, " "ignored otherwise]") parser.add_argument( "--style", "-s", default="calendar", choices=["calendar", "c", "lecture", "l", "iso", "i"], help="output style: 'calendar' for teaching calendars in course " "outlines, 'lecture' for individual lecture dates, or 'iso'" "for dates across the entire ISO-8601 year [default 'calendar']") parser.add_argument( "--teaching-period", "-t", default=None, choices=["SS", "S1", "S2", "FY"], dest="period", help="teaching period [required]") parser.add_argument( "--year", "-y", type=int, default=datetime.date.today().year, help=("the year to generate dates for [default {y}]".format( y=datetime.date.today().year))) args = parser.parse_args() # normalise format and style args.format = format_map[args.format] args.style = style_map[args.style] # Load the default config if none is explicitly specified. if not args.config_file: args.config = yaml.safe_load( pkg_resources.read_text(config, "default.yml")) else: with open(args.config_file) as cfg: args.config = yaml.safe_load(cfg.read()) if args.style == "calendar": # --paper is irrelevant if args.paper: print("generate_dates: warning: --paper/-p is ignored for " "'calendar' style") # --teaching-period is required if not args.period: parser.exit(2, "generate_dates: error: --teaching-period/-t " "is required for 'calendar' style\n") elif args.style == "iso": # both --paper and --teaching-period are irrelevant if args.paper or args.period: print("generate_dates: warning: --paper/-p and " "--teaching-period/-t are ignored for 'iso' style") elif args.style == "lecture": # both --paper and --teaching-period are required if not args.paper: parser.exit(2, message="generate_dates: error: -paper/-p and " "--teaching-period/-t are required for 'lecture' style\n") # --teaching-period must be specified if --style is "calendar" or "lecture" else: pass return args

Ignore Space Show notes View

calendar/generate_dates/config/cli.py 0 → 100644

import argparse
import datetime
import importlib.resources as pkg_resources
import yaml

from generate_dates import config

def parse_command_line():
    """Parse command-line arguments.

Show line notes below