251 lines
7.4 KiB
Python
251 lines
7.4 KiB
Python
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"""
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Port of the C figlet driver to Python. Ugly, gross, not fully working, but
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does what I need to display a simple banner with a hand selected set of fonts.
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"""
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import sys
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import os
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import random
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__all__ = ['newbanner']
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def newbanner(fontdir, msg):
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"""
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Returns msg converted to a random ascii art font from the given
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fontdir.
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"""
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try:
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font = get_randfont(fontdir)
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if not font:
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return "", ""
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f = Fig(font)
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f.addline(msg)
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except:
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return "", ""
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return f.getline(),font
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def get_randfont(fontdir):
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fonts = get_fontdirlist(fontdir)
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if not fonts:
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return None
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index = random.randint(0, len(fonts) - 1)
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return fonts[index]
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def get_fontdirlist(fontdir='fonts'):
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fonts = [fontdir + os.path.sep + item
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for item in os.listdir(fontdir)
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if item.endswith(".flf")]
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return fonts
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class Fig:
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hdr = {}
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def __init__(self, fontfile=None):
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if fontfile:
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self.init_fonts(fontfile)
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self.clearline()
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"""
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Font File parsing
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"""
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def init_fonts(self, fontfile=None):
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if fontfile:
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self.fontfile = fontfile
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file = open(self.fontfile)
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self.parse_header(file.readline().split())
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self.parse_comments(file)
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self.parse_chars(file)
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file.close()
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def parse_header(self, header):
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self.hdr['signature'] = header[0][:-1]
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self.hdr['hardblank'] = header[0][-1]
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self.hdr['height'] = int(header[1])
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self.hdr['baseline'] = header[2]
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self.hdr['maxlength'] = int(header[3])
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self.hdr['oldlayout'] = header[4]
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self.hdr['commentlines'] = int(header[5])
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try:
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self.hdr['printdir'] = header[6]
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self.hdr['fulllayout'] = header[7]
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self.hdr['codetagcount'] = header[8]
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except:
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self.hdr['printdir'] = ""
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self.hdr['fulllayout'] = ""
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self.hdr['codetagcount'] = ""
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if self.hdr['signature'] != "flf2a":
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self.hdr = {}
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return False
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return True
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def parse_comments(self, file):
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for i in range(0, self.hdr['commentlines']):
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line = file.readline()
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del line
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def parse_chars(self, file):
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self.chars = {}
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for c in range(32,127):
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self.chars[chr(c)] = []
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for i in range(0, self.hdr['height']):
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self.chars[chr(c)].append(list(file.readline().rstrip("@#\r\n")))
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def getletter(self, c):
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self.previouscharwidth = self.currcharwidth
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self.currcharwidth = len(self.chars[c][0])
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return self.chars[c]
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def len_letter(self, letter):
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return len(letter[0])
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"""
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Input Handling
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"""
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def smushmem(self, ch1, ch2):
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special = "|/\\[]{}()<>"
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if ch1 == ' ':
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return ch2
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if ch2 == ' ':
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return ch1
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if self.previouscharwidth < 2 or self.currcharwidth < 2:
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return '\0'
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if ch1 == self.hdr['hardblank'] or ch2 == self.hdr['hardblank']:
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return '\0'
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if ch1 == ch2:
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return ch1
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if ch1 == '_' and ch2 in special:
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return ch2
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if ch2 == '_' and ch1 in special:
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return ch1
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if ch1 == "|" and ch2 in special[1:]:
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return ch2
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if ch2 == "|" and ch1 in special[1:]:
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return ch1
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if ch1 in "/\\" and ch2 in special[3:]:
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return ch2
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if ch2 in "/\\" and ch1 in special[3:]:
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return ch1
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if ch1 in "[]" and ch2 in special[5:]:
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return ch2
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if ch2 in "[]" and ch1 in special[5:]:
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return ch1
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if ch1 in "{}" and ch2 in special[7:]:
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return ch2
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if ch2 in "{}" and ch1 in special[7:]:
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return ch1
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if ch1 in "()" and ch2 in special[9:]:
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return ch2
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if ch2 in "()" and ch1 in special[9:]:
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return ch1
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if ch1 == '[' and ch2 == ']':
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return '|'
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if ch1 == ']' and ch2 == '[':
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return '|'
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if ch1 == '{' and ch2 == '}':
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return '|'
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if ch1 == '}' and ch2 == '{':
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return '|'
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if ch1 == '(' and ch2 == ')':
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return '|'
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if ch1 == ')' and ch2 == '(':
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return '|'
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return '\0'
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def get_smushamount(self, l):
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max_smush = self.currcharwidth
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for row in range(0, self.hdr['height']):
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linebd = len(self.line[row])
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ch1 = ' '
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while linebd > 0 and ch1 == ' ':
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try:
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ch1 = self.line[row][linebd]
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except IndexError:
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ch1 = ' '
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if ch1 != ' ':
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break
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linebd = linebd - 1
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try:
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charbd = 0
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ch2 = ' '
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while ch2 == ' ':
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ch2 = l[row][charbd]
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if ch2 != ' ':
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break
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charbd = charbd + 1
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except IndexError:
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ch2 = None
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amt = charbd + self.outlinelen - 1 - linebd
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if ch1 == None or ch1 == ' ':
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amt = amt + 1
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elif ch2 != None:
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if self.smushmem(ch1, ch2) != '\0':
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amt = amt + 1
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if amt < max_smush:
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max_smush = amt
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return max_smush
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def addchar(self, c):
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letter = self.getletter(c)
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smush_amount = self.get_smushamount(letter)
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for row in range(0, self.hdr['height']):
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for k in range(0, smush_amount):
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if self.outlinelen - smush_amount + k >= 0:
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ch1 = self.line[row][self.outlinelen-smush_amount+k]
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ch2 = letter[row][k]
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self.line[row][self.outlinelen-smush_amount+k] = self.smushmem(ch1, ch2)
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self.line[row] += letter[row][smush_amount:]
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self.outlinelen = len(self.line[0])
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def addline(self, line):
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for c in line: self.addchar(c)
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"""
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Output handling
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"""
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def clearline(self):
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self.line = []
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for i in range(0,self.hdr['height']):
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self.line.append([])
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self.previouscharwidth = 0
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self.currcharwidth = 0
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self.outlinelen = 0
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def getstring(self, i):
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return ''.join(self.line[i]).replace(self.hdr['hardblank'], ' ')
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def getline(self):
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lines = []
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for i in range(0, self.hdr['height']):
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lines.append(self.getstring(i))
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self.clearline()
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return '\n'.join(lines)
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def putstring(self, i):
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print ''.join(self.line[i]).replace(self.hdr['hardblank'], ' ')
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def printline(self):
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for i in range(0, self.hdr['height']):
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self.putstring(i)
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self.clearline()
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if __name__ == "__main__":
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if len(sys.argv) < 3:
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print "usage: %s [phrase] [fontdir]" % sys.argv[0]
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sys.exit(-1)
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fontdir = sys.argv[2]
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fonts = get_fontdirlist(fontdir)
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index = random.randint(0, len(fonts) - 1)
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for font in fonts:
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print "FONT: ", font
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f = Fig(font)
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f.addline(sys.argv[1])
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f.printline()
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