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Merge pull request #205 from Feuermurmel/list-fix

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Refactoring in the lists module and fix of #198
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Mattias Andrée [mˈa.tːiː.ˌas ˈanː.drˌeː] 2014-08-29 20:12:10 +00:00
commit c077f08259
1 changed files with 67 additions and 90 deletions
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157
src/lists.py
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@ -35,61 +35,75 @@ File listing functions.
from ucs import *
import itertools
def _columnise(ponies):
def _columnise_list(items: list, available_width: int, length_fn: callable, separation : int = 2):
"""
From a list of items, produce a list of columns. Each columns is a list of tuples. Each tuple contains the element and a an int, specifying how much shorter the element is compared to the column width.
:param items: A list of items.
:param available_width: The maximum with available horizontally for the items.
:param length_fn: Function that is called to compute an element's width.
:param separation: Amount of space to insert between columns.
"""
num_items = len(items)
items_with_length = [(i, length_fn(i)) for i in items]
max_item_length = max(i for _, i in items_with_length)
# Make at least one column to handle very narrow terminals.
num_columns = max((available_width + separation) // (max_item_length + separation), 1)
column_length = (num_items - 1) // num_columns + 1
items_with_spacing = [(i, max_item_length - l + separation) for i, l in items_with_length]
return [items_with_spacing[i:i + column_length] for i in range(0, num_items, column_length)]
def _print_columnised(items):
'''
Columnise a list and prints it
@param ponies:list<(str, str)> All items to list, each item should have to elements: unformated name, formated name
@param ponies:list<(str, str)> All items to list, each item should have to elements: unformatted name, formatted name.
'''
## Get terminal width, and a 2 which is the space between columns
termwidth = gettermsize()[1] + 2
## Sort the ponies, and get the cells' widths, and the largest width + 2
ponies.sort(key = lambda pony : pony[0])
widths = [UCS.dispLen(pony[0]) for pony in ponies]
width = max(widths) + 2 # longest pony file name + space between columns
## Get terminal width
_, term_width = gettermsize()
## Calculate the number of rows and columns, can create a list of empty columns
cols = termwidth // width # do not believe electricians, this means ⌊termwidth / width⌋
rows = (len(ponies) + cols - 1) // cols
columns = []
for c in range(0, cols): columns.append([])
columns = _columnise_list(
sorted(items, key = lambda x: x[0]),
term_width,
lambda x: UCS.dispLen(x[0]))
## Fill the columns with cells of ponies
(y, x) = (0, 0)
for j in range(0, len(ponies)):
cell = ponies[j][1] + ' ' * (width - widths[j]);
columns[x].append(cell)
y += 1
if y == rows:
x += 1
y = 0
for row in itertools.zip_longest(*columns):
def iter_parts():
spacing = 0
for cell in row:
if cell:
# Yield this here to prevent whitespace to be printed after the last column.
yield ' ' * spacing
(_, item), spacing = cell
yield item
print(''.join(iter_parts()))
## Make the columnisation nicer by letting the last row be partially empty rather than the last column
diff = rows * cols - len(ponies)
if (diff > 2) and (rows > 1):
c = cols - 1
diff -= 1
while diff > 0:
columns[c] = columns[c - 1][-diff:] + columns[c]
c -= 1
columns[c] = columns[c][:-diff]
diff -= 1
## Create rows from columns
lines = []
for r in range(0, rows):
lines.append([])
for c in range(0, cols):
if r < len(columns[c]):
line = lines[r].append(columns[c][r])
## Print the matrix, with one extra blank row
print('\n'.join([''.join(line)[:-2] for line in lines]))
print()
def _get_file_list(dir_path : str, extension : str):
"""
Return a list of files in the specified directory with have the specified file name extension.
:param dir_path: Path to the directory.
:param extension: The allowed file name extension.
"""
return [i[:-len(extension)] for i in os.listdir(dir_path) if endswith(i, extension)]
def simplelist(ponydirs, quoters = [], ucsiser = None):
'''
Lists the available ponies
@ -100,13 +114,9 @@ def simplelist(ponydirs, quoters = [], ucsiser = None):
'''
for ponydir in ponydirs: # Loop ponydirs
## Get all ponies in the directory
_ponies = os.listdir(ponydir)
ponies = _get_file_list(ponydir, '.pony')
## Remove .pony from all files and skip those that does not have .pony
ponies = []
for pony in _ponies:
if endswith(pony, '.pony'):
ponies.append(pony[:-5])
print()
## UCS:ise pony names, they are already sorted
if ucsiser is not None:
@ -116,7 +126,7 @@ def simplelist(ponydirs, quoters = [], ucsiser = None):
if len(ponies) == 0:
continue
print('\033[1mponies located in ' + ponydir + '\033[21m')
_columnise([(pony, '\033[1m' + pony + '\033[21m' if pony in quoters else pony) for pony in ponies])
_print_columnised([(pony, '\033[1m' + pony + '\033[21m' if pony in quoters else pony) for pony in ponies])
def linklist(ponydirs = None, quoters = [], ucsiser = None):
@ -127,18 +137,10 @@ def linklist(ponydirs = None, quoters = [], ucsiser = None):
@param quoters:__in__(str)→bool Set of ponies that of quotes
@param ucsiser:(list<str>, map<str, str>)?→void Function used to UCS:ise names
'''
## Get the size of the terminal
termsize = gettermsize()
for ponydir in ponydirs: # Loop ponydirs
## Get all pony files in the directory
_ponies = os.listdir(ponydir)
## Remove .pony from all files and skip those that does not have .pony
ponies = []
for pony in _ponies:
if endswith(pony, '.pony'):
ponies.append(pony[:-5])
ponies = _get_file_list(ponydirs, '.pony')
## If there are no ponies in the directory skip to next directory, otherwise, print the directories name
if len(ponies) == 0:
@ -193,7 +195,7 @@ def linklist(ponydirs = None, quoters = [], ucsiser = None):
ponies[(item.replace('\033[1m', '').replace('\033[21m', ''), item)] = w
## Print the ponies, columnised
_columnise(list(ponies))
_print_columnised(list(ponies))
def onelist(standarddirs, extradirs = None, ucsiser = None):
@ -205,19 +207,7 @@ def onelist(standarddirs, extradirs = None, ucsiser = None):
@param ucsiser:(list<str>)?→void Function used to UCS:ise names
'''
## Get all pony files
_ponies = []
if standarddirs is not None:
for ponydir in standarddirs:
_ponies += os.listdir(ponydir)
if extradirs is not None:
for ponydir in extradirs:
_ponies += os.listdir(ponydir)
## Remove .pony from all files and skip those that does not have .pony
ponies = []
for pony in _ponies:
if endswith(pony, '.pony'):
ponies.append(pony[:-5])
ponies = [j for i in [standarddirs, extradirs] for j in _get_file_list(i, '.pony')]
## UCS:ise and sort
if ucsiser is not None:
@ -239,24 +229,11 @@ def balloonlist(balloondirs, isthink):
@param balloondirs:itr<str> The balloon directories to use
@param isthink:bool Whether the ponythink command is used
'''
## Get the size of the terminal
termsize = gettermsize()
extension = '.think' if isthink else '.say'
## Get all balloons
balloonset = set()
for balloondir in balloondirs:
for balloon in os.listdir(balloondir):
## Use .think if running ponythink, otherwise .say
if isthink and endswith(balloon, '.think'):
balloon = balloon[:-6]
elif (not isthink) and endswith(balloon, '.say'):
balloon = balloon[:-4]
else:
continue
## Add the balloon if there is none with the same name
if balloon not in balloonset:
balloonset.add(balloon)
balloonset = set(j for i in balloondirs for j in _get_file_list(i, extension))
## Print all balloos, columnised
_columnise([(balloon, balloon) for balloon in balloonset])
_print_columnised([(balloon, balloon) for balloon in balloonset])