# Class for the puzzle data representation
+# for export to PNG image
+import cairo
+
class GridItem:
# initialize the item
- def __init__ (self, item_char='.', across_start = False, down_start = False,
- occupied_across = False, occupied_down = False, num = 0,
- clue_across = None, clue_down = None, revealed = False):
+ def __init__ (self, item_char='.', item_guess = None, across_start = False,
+ down_start = False, occupied_across = False,
+ occupied_down = False, num = 0, clue_across = None,
+ clue_down = None, revealed = False):
# character in the cell
self.char = item_char
+ # guess of character in cell
+ self.guess = item_guess
# is the cell the start of an across word?
self.across_start = across_start
# is the cell the start of a down word?
# is the letter revealed or hidden?
self.revealed = revealed
+ # clear the across data
+ def clear_across_data (self):
+ self.across_start = False
+ self.occupied_across = False
+ self.clue_across = None
+ # if no down word starting at item
+ if self.down_start is False:
+ self.numbered = 0
+ # if no down word at the item
+ if self.occupied_down is False:
+ self.char = '.'
+ self.revealed = False
+ self.guess = None
+
+ # clear the down data
+ def clear_down_data (self):
+ self.down_start = False
+ self.occupied_down = False
+ self.clue_down = None
+ # if no across word starting at item
+ if self.across_start is False:
+ self.numbered = 0
+ # if no across word at the item
+ if self.occupied_across is False:
+ self.char = '.'
+ self.revealed = False
+ self.guess = None
+
+ # reset a grid item completely - use only to destroy whole grid, otherwise
+ # use either clear_across_data () or clear_down_data () for erasing single
+ # words
+ def reset (self):
+ # character in the cell
+ self.char = '.'
+ # guess of character in cell
+ self.guess = None
+ # is the cell the start of an across word?
+ self.across_start = False
+ # is the cell the start of a down word?
+ self.down_start = False
+ # is the cell occupied by a letter in an across word?
+ self.occupied_across = False
+ # is the cell occupied by a letter in a down word?
+ self.occupied_down = False
+ # numbering of the cell if it is the start of a word
+ self.numbered = 0
+ # clue across if the cell is the start of an across word
+ self.clue_across = None
+ # clue down if the cell is the start of a down word
+ self.clue_down = None
+ # is the letter revealed or hidden?
+ self.revealed = False
+
# exception for too long words
class TooLongWordException (Exception):
def __init__ (self, word, length):
self.word = word
self.length = length
+# exception for words containing non-alpha characters
+class WordCharsException (Exception):
+ def __init__ (self, word):
+ self.word = word
+
# exception for intersecting words
class IntersectWordException (Exception):
def __init__ (self, word, length):
def __init__ (self):
self.msg = "Grid is frozen and cannot be edited"
+# exception when no word is found at a position
+class NoWordException (Exception):
+ def __init__ (self, row, col):
+ self.pos = (row, col)
+
+# exception when a word number is not found in the grid
+class NoNumberException (Exception):
+ def __init__ (self, num):
+ self.num = num
+
+# exception when no words are present in the grid
+class NoWordsException (Exception):
+ def __init__ (self):
+ self.msg = "No words in grid"
+
+# exception to raise when solution is imcomplete when trying to verify it
+class IncompleteSolutionException (Exception):
+ def __init__ (self):
+ self.msg = "Solution incomplete"
+
class CrosswordPuzzle:
def __init__ (self, rows, cols):
# define number of rows and columns
for j in range (cols):
self.data[i].append (GridItem ())
+ # export to an image
+ def export_image (self, pngfile, htmlfile=None, puztitle="Crossword Puzzle",
+ solution=True):
+ # don't export if grid is not frozen
+ self.assert_frozen_grid ()
+
+ # create cairo image surface and context
+ px = 30
+ surf = cairo.ImageSurface (cairo.FORMAT_RGB24, self.cols*px, self.rows*px)
+ ctx = cairo.Context (surf)
+
+ ctx.set_source_rgb (1, 1, 1)
+ ctx.rectangle (0, 0, self.cols*px, self.rows*px)
+ ctx.fill ()
+
+ # get the clues across and down
+ clues_across = self.get_clues_across ()
+ clues_down = self.get_clues_down ()
+
+
+ # traverse through the grid
+ for row in range (self.rows):
+ for col in range (self.cols):
+ # if grid is un-occupied
+ if (self.data[row][col].occupied_across is False and
+ self.data[row][col].occupied_down is False):
+ ctx.set_source_rgb (0, 0, 0)
+ ctx.rectangle (col*px, row*px, px, px)
+ ctx.fill ()
+ # grid is occupied
+ else:
+ ctx.set_source_rgb (1, 1, 1)
+ ctx.rectangle (col*px, row*px, px, px)
+ ctx.fill ()
+ ctx.set_source_rgb (0, 0, 0)
+ ctx.rectangle (col*px, row*px, px, px)
+ ctx.stroke ()
+ # if solution is not to be provided, number the grid
+ if solution is False:
+ if self.data[row][col].numbered <> 0:
+ ctx.select_font_face ("Serif")
+ ctx.set_font_size (10)
+ ctx.move_to (col*px+5, row*px+10)
+ ctx.show_text (str(self.data[row][col].numbered))
+ # display the words
+ else:
+ ctx.select_font_face ("Serif")
+ ctx.set_font_size (16)
+ ctx.move_to (col*px+10, row*px+20)
+ ctx.show_text (self.data[row][col].char)
+
+ surf.write_to_png (open (pngfile, "wb"))
+
+ # if solution is false, publish the clues and the image in a HTML file
+ if htmlfile and solution is False:
+ html_contents = ["<html>", "<head>", "<title>"]
+ html_contents.append (puztitle)
+ html_contents.append ("</title>")
+ html_contents.append ("</head>")
+ html_contents.append ("<body>")
+ html_contents.append ("<h1>" + puztitle + "</h1>")
+ html_contents.append ('<img src="' + pngfile + '" alt="puzzle" />')
+
+ html_contents.append ("<h2>Across clues</h2>")
+ html_contents.append ("<p>")
+ for word, clue in clues_across:
+ # clue should be: <num> - clue text (chars)
+ clue_str = str (self.data[word[1]][word[2]].numbered) + " - " \
+ + clue + " (" + str (word[3]) + ")"
+ html_contents.append (clue_str)
+ html_contents.append ("<br />")
+ html_contents.append ("</p>")
+
+ html_contents.append ("<h2>Down clues</h2>")
+ html_contents.append ("<p>")
+ for word, clue in clues_down:
+ clue_str = str (self.data[word[1]][word[2]].numbered) + " - " \
+ + clue + " (" + str (word[3]) + ")"
+ html_contents.append (clue_str)
+ html_contents.append ("<br />")
+ html_contents.append ("</p>")
+ html_contents.append ("</body>")
+ html_contents.append ("</html>")
+
+ html_str = "\r\n".join (html_contents)
+
+ fhtml = open (htmlfile, "wb")
+ fhtml.write (html_str)
+ fhtml.close ()
+
+ # get the AcrossLite(TM) data for exporting
+ def export_acrosslite (self, title, author, copyright):
+ # don't export if grid is not frozen
+ self.assert_frozen_grid ()
+
+ across_data = []
+ across_data.append ("<ACROSS PUZZLE>\r\n")
+ across_data.append ("<TITLE>\r\n")
+ across_data.append (title + "\r\n")
+ across_data.append ("<AUTHOR>\r\n")
+ across_data.append (author + "\r\n")
+ across_data.append ("<COPYRIGHT>\r\n")
+ across_data.append (copyright + "\r\n")
+ across_data.append ("<SIZE>\r\n")
+ str_size = str (self.cols) + "x" + str (self.rows)
+ across_data.append (str_size + "\r\n")
+ across_data.append ("<GRID>\r\n")
+ for row in range (self.rows):
+ for col in range (self.cols):
+ if (self.data[row][col].occupied_across is True or
+ self.data[row][col].occupied_down is True):
+ across_data.append (self.data[row][col].char)
+ else:
+ across_data.append (".")
+ across_data.append ("\r\n")
+
+ across_data.append ("<ACROSS>\r\n")
+ clues_across = self.get_clues_across ()
+ for word, clue in clues_across:
+ if clue:
+ across_data.append (clue + "\r\n")
+ else:
+ across_data.append ("(No clue yet)\r\n")
+
+ across_data.append ("<DOWN>\r\n")
+ clues_down = self.get_clues_down ()
+ for word, clue in clues_down:
+ if clue:
+ across_data.append (clue + "\r\n")
+ else:
+ across_data.append ("(No clue yet\r\n")
+
+ acrosslite_str = "".join (across_data)
+ return acrosslite_str
+
+ # get all the clues for across
+ def get_clues_across (self):
+ clues = []
+ # traverse the grid
+ for row in range (self.rows):
+ for col in range (self.cols):
+ if (self.data[row][col].occupied_across is True and
+ self.data[row][col].across_start is True):
+ word_across = self.get_word_across (row, col)
+ clues.append ((word_across, self.data[row][col].clue_across))
+ # if no across words are found at all
+ if not clues:
+ raise NoWordsException
+
+ return clues
+
+ # get all the clues for down
+ def get_clues_down (self):
+ clues = []
+ # traverse the grid
+ for row in range (self.rows):
+ for col in range (self.cols):
+ if (self.data[row][col].occupied_down is True and
+ self.data[row][col].down_start is True):
+ word_down = self.get_word_down (row, col)
+ clues.append ((word_down, self.data[row][col].clue_down))
+ # if no down words are found at all
+ if not clues:
+ raise NoWordsException
+
+ return clues
+
+ # getting an across word at a number (note that the grid should be
+ # frozen for calling this otherwise a FrozenGridException will be raised)
+ def get_word_across_at_num (self, num):
+ # assert that the grid is frozen
+ self.assert_frozen_grid ()
+
+ # traverse the grid
+ for row in range (self.rows):
+ for col in range (self.cols):
+ if self.data[row][col].numbered == num:
+ word = self.get_word_across (row, col)
+ return word
+
+ # if number is not found
+ raise NoNumberException (num)
+
+ # getting a down word at a number (note that the grid should be frozen
+ # for calling this otherwise a FrozenGridException will be raised)
+ def get_word_down_at_num (self, num):
+ # assert that the grid is frozen
+ self.assert_frozen_grid ()
+
+ # traverse the grid
+ for row in range (self.rows):
+ for col in range (self.cols):
+ if self.data[row][col].numbered == num:
+ word = self.get_word_down (row, col)
+ return word
+
+ # if number is not found
+ raise NoNumberException (num)
+
+ # getting the position of a number on the grid (note that the grid should
+ # be frozen for calling this otherwise a FrozenGridException will be raised)
+ def get_position_of_num (self, num):
+ # assert that the grid is frozen
+ self.assert_frozen_grid ()
+
+ # traverse the grid
+ for row in range (self.rows):
+ for col in range (self.cols):
+ if self.data[row][col].numbered == num:
+ return (row, col)
+
+ # if number is not found
+ raise NoNumberException (num)
+
+ # getting a down word at a position
+ def get_word_down (self, row, col):
+ # if index is out of bounds
+ if row >= self.rows or col >= self.cols:
+ raise NoWordException (row, col)
+
+ # if there is no occupied down letter at that position
+ if self.data[row][col].occupied_down is False:
+ raise NoWordException (row, col)
+
+ # now traverse the grid to find the beginning of the word
+ i = row
+ while i >= 0:
+ # if it is occupied down and is the beginning of the word
+ if (self.data[i][col].occupied_down is True and
+ self.data[i][col].down_start is True):
+ start_row = i
+ break
+ i -= 1
+
+ i = start_row
+ word_chars = []
+ # now seek the end of the word
+ while i < self.rows:
+ if self.data[i][col].occupied_down is True:
+ word_chars.append (self.data[i][col].char)
+ else:
+ break
+ i += 1
+
+ word = "".join (word_chars)
+
+ # return the word, starting row, column and length as a tuple
+ return (word, start_row, col, len(word))
+
+ # getting an across word at a position
+ def get_word_across (self, row, col):
+ # if index is out of bounds
+ if row >= self.rows or col >= self.cols:
+ raise NoWordException (row, col)
+
+ # if there is no occupied across letter at that position
+ if self.data[row][col].occupied_across is False:
+ raise NoWordException (row, col)
+
+ # now traverse the grid to look for the beginning of the word
+ i = col
+ while i >= 0:
+ # if it is occupied across and is the beginning of the word
+ if (self.data[row][i].occupied_across is True and
+ self.data[row][i].across_start is True):
+ start_col = i
+ break
+ i -= 1
+
+ i = start_col
+ word_chars = []
+ # now seek the end of the word
+ while i < self.cols:
+ if self.data[row][i].occupied_across is True:
+ word_chars.append (self.data[row][i].char)
+ else:
+ break
+ i += 1
+
+ word = "".join (word_chars)
+
+ # return the word, starting column, row and length as a tuple
+ return (word, row, start_col, len(word))
+
# setting a down word
def set_word_down (self, row, col, word):
- # if the grid is frozen the abort
- if self.frozen_grid is True:
- raise FrozenGridException
+ # if the grid is frozen then abort
+ self.assert_unfrozen_grid ()
+
+ # if the word has non-alphabetic characters
+ if not word.isalpha ():
+ raise WordCharsException (word)
# if the word length greater than totalrows - startrow
if len(word) > self.rows - row:
if i > 0 and i < len(word) - 1:
if self.data[row+i][col-1].occupied_down is True:
raise IntersectWordException (word, len(word))
+ # if the previous column is the end of an across word
+ if (self.data[row+i][col-1].occupied_across is True and
+ self.data[row+i][col].occupied_across is False):
+ raise IntersectWordException (word, len(word))
+
# on the next column except last column
if col < len(word) - 1:
# except the first and last row check if there is any
# setting an across word
def set_word_across (self, row, col, word):
- # if the grid is frozen the abort
- if self.frozen_grid is True:
- raise FrozenGridException
+ # if the grid is frozen then abort
+ self.assert_unfrozen_grid ()
+
+ # if the word has non-alphabetic characters
+ if not word.isalpha ():
+ raise WordCharsException (word)
# is the word length greater than totalcols - startcol?
if len(word) > self.cols - col:
if i > 0 and i < len(word) - 1:
if self.data[row-1][col+i].occupied_across is True:
raise IntersectWordException (word, len(word))
+ # if the previous row is the end of a down word
+ if (self.data[row-1][col+i].occupied_down is True and
+ self.data[row][col+i].occupied_down is False):
+ raise IntersectWordException (word, len(word))
+
# on a next row
if (row < (self.rows - 1)):
# except the first and last letter check if there is
self.frozen_grid = False
+ # raise an exception if the grid is frozen
+ def assert_unfrozen_grid (self):
+ if self.frozen_grid is True:
+ raise FrozenGridException
+
+ # raise an exception if the grid is NOT frozen
+ def assert_frozen_grid (self):
+ if self.frozen_grid is False:
+ raise FrozenGridException
+
+ # reset the entire grid
+ def reset_grid (self):
+ # run through the grid
+ for row in range (self.rows):
+ for col in range (self.cols):
+ # re-initialize all data
+ self.data[row][col].reset ()
+
+ self.frozen_grid = False
+
+ # remove an across word at position
+ def remove_word_across (self, row, col):
+ # if grid is frozen don't allow removal of word
+ self.assert_unfrozen_grid ()
+
+ word, brow, bcol, l = self.get_word_across (row, col)
+
+ # traverse from the beginning to end of the word and erase it
+ c = bcol
+ while c < self.cols:
+ if self.data[brow][c].occupied_across is True:
+ self.data[brow][c].clear_across_data ()
+ else:
+ break
+ c += 1
+
+ # remove a down word at position
+ def remove_word_down (self, row, col):
+ # if grid is frozen don't allow removal of word
+ self.assert_unfrozen_grid ()
+
+ word, brow, bcol, l = self.get_word_down (row, col)
+ # traverse from the beginn to end of the word and erase it
+ r = brow
+ while r < self.rows:
+ if self.data[r][bcol].occupied_down is True:
+ self.data[r][bcol].clear_down_data ()
+ else:
+ break
+ r += 1
+
+ # reveal/unreveal a word at position
+ def reveal_word_across (self, row, col, revealed=True):
+ # set the revealed flag for the word at the position
+ word= self.get_word_across (row, col)
+
+ c = word[2]
+ while c < self.cols:
+ if self.data[word[1]][c].occupied_across is True:
+ self.data[word[1]][c].revealed = revealed
+ else:
+ break
+ c += 1
+
+ # reveal/unreveal a word at position
+ def reveal_word_down (self, row, col, revealed=True):
+ # set the revealed flag for the word at the position
+ word = self.get_word_down (row, col)
+
+ r = word[1]
+ while r < self.rows:
+ if self.data[r][word[2]].occupied_down is True:
+ self.data[r][word[2]].revealed = revealed
+ else:
+ break
+ r += 1
+
+ # reveal/hide the entire solution by resetting revealed flag at all cells
+ def reveal_solution (self, revealed=True):
+ # run through the grid and set revealed to False
+ for row in range (self.rows):
+ for col in range (self.cols):
+ self.data[row][col].revealed = revealed
+
+ # clear the guesses for the board
+ def clear_guesses (self):
+ # run through the grid and set the guesses to None
+ for row in range (self.rows):
+ for col in range (self.cols):
+ self.data[row][col].guess = None
+
+ # verify the solution - return True if all guessed characters are correct
+ # return False if some of them are wrong.
+ # if the board is not completed as yet, raise a IncompleteSolutionException
+ def is_solution_correct (self):
+ # run through the grid and check for each character in occupied cells
+ flag = True
+ for row in range (self.rows):
+ for col in range (self.cols):
+ if (self.data[row][col].occupied_across is True or
+ self.data[row][col].occupied_down is True):
+ # if there is no guess at a particular location raise
+ # the incomplete solution exception
+ if not self.data[row][col].guess:
+ raise IncompleteSolutionException
+ # if a character doesn't match, return False
+ if self.data[row][col].char <> self.data[row][col].guess:
+ flag = False
+
+ # finally return result
+ return flag
+
projects / getaclue.git / blobdiff