textgen: Move common code into a common file.

Reduce code duplication by refactoring the textgen and smtextgen
scripts.

graphics/text/common.py

@@ -0,0 +1,46 @@
+
+import re
+import subprocess
+import sys
+
+# ImageMagick commands used by this script:
+CONVERT_COMMAND = 'convert'
+IDENTIFY_COMMAND = 'identify'
+
+# Output from 'identify' looks like this:
+#  fontchars/font033.gif GIF 9x16 9x16+0+0 8-bit sRGB 32c 194B 0.000u 0:00.000
+IDENTIFY_OUTPUT_RE = re.compile(r'(\S+)\s(\S+)\s(\d+)x(\d+)\s')
+
+# Regexp to identify strings that are all lowercase (can use shorter height)
+LOWERCASE_RE = re.compile(r'^[a-z\!\. ]*$')
+
+def get_image_dimensions(filename):
+	proc = subprocess.Popen([IDENTIFY_COMMAND, filename],
+	                        stdout=subprocess.PIPE)
+	proc.wait()
+
+	line = proc.stdout.readline().decode('utf-8')
+	match = IDENTIFY_OUTPUT_RE.match(line)
+	assert match is not None
+	return (int(match.group(3)), int(match.group(4)))
+
+def invoke_command(command):
+	"""Invoke a command, printing the command to stdout.
+
+	Args:
+	  command: Command and arguments as a list.
+	"""
+	for arg in command:
+		if arg.startswith('-'):
+			sys.stdout.write("\\\n    ")
+
+		if ' ' in arg or '#' in arg:
+			sys.stdout.write(repr(arg))
+		else:
+			sys.stdout.write(arg)
+
+		sys.stdout.write(' ')
+
+	sys.stdout.write('\n')
+	return subprocess.call(command)
+

graphics/text/smtextgen

@@ -35,12 +35,9 @@
 
 from glob import glob
 import sys
-import subprocess
 import re
 
-# ImageMagick commands used by this script:
-CONVERT_COMMAND = 'convert'
-IDENTIFY_COMMAND = 'identify'
+from common import *
 
 # Background color for output files.
 BACKGROUND_COLOR = '#00ffff'
@@ -49,45 +46,11 @@ BACKGROUND_COLOR = '#00ffff'
 SPACE_WIDTH = 4
 
 # Height of the font.
-FONT_HEIGHT = 7
+FONT_HEIGHT = 8
 
 # Regexp to match dimensions/x,y coordinate pair.
 DIMENSION_MATCH_RE = re.compile(r'(\d+)[x,](\d+)')
 
-# Output from 'identify' looks like this:
-#  fontchars/font033.gif GIF 9x16 9x16+0+0 8-bit sRGB 32c 194B 0.000u 0:00.000
-IDENTIFY_OUTPUT_RE = re.compile(r'(\S+)\s(\S+)\s(\d+)x(\d+)\s')
-
-def get_image_dimensions(filename):
-	proc = subprocess.Popen([IDENTIFY_COMMAND, filename],
-	                        stdout=subprocess.PIPE)
-	proc.wait()
-
-	line = proc.stdout.readline().decode('utf-8')
-	match = IDENTIFY_OUTPUT_RE.match(line)
-	assert match is not None
-	return (int(match.group(3)), int(match.group(4)))
-
-def invoke_command(command):
-	"""Invoke a command, printing the command to stdout.
-
-	Args:
-	  command: Command and arguments as a list.
-	"""
-	for arg in command:
-		if arg.startswith('-'):
-			sys.stdout.write("\\\n    ")
-
-		if ' ' in arg or '#' in arg:
-			sys.stdout.write(repr(arg))
-		else:
-			sys.stdout.write(arg)
-
-		sys.stdout.write(' ')
-
-	sys.stdout.write('\n')
-	return subprocess.call(command)
-
 class Font(object):
 	def __init__(self):
 		self.get_font_widths()

graphics/text/textgen

@@ -35,15 +35,11 @@
 #
 
 from glob import glob
-from sys import stdout
-import subprocess
 import re
+import sys
 
 from config import *
-
-# ImageMagick commands used by this script:
-CONVERT_COMMAND = 'convert'
-IDENTIFY_COMMAND = 'identify'
+from common import *
 
 # ImageMagick -colorize parameters for colorizing text:
 COLOR_BLUE = (100, 100, 0)
@@ -63,43 +59,6 @@ UPPERCASE_FONT = False
 # Width of a space character in pixels.
 SPACE_WIDTH = 7
 
-# Output from 'identify' looks like this:
-#  fontchars/font033.gif GIF 9x16 9x16+0+0 8-bit sRGB 32c 194B 0.000u 0:00.000
-IDENTIFY_OUTPUT_RE = re.compile(r'(\S+)\s(\S+)\s(\d+)x(\d+)\s')
-
-# Regexp to identify strings that are all lowercase (can use shorter height)
-LOWERCASE_RE = re.compile(r'^[a-z\!\. ]*$')
-
-def get_image_dimensions(filename):
-	proc = subprocess.Popen([IDENTIFY_COMMAND, filename],
-	                        stdout=subprocess.PIPE)
-	proc.wait()
-
-	line = proc.stdout.readline().decode('utf-8')
-	match = IDENTIFY_OUTPUT_RE.match(line)
-	assert match is not None
-	return (int(match.group(3)), int(match.group(4)))
-
-def invoke_command(command):
-	"""Invoke a command, printing the command to stdout.
-
-	Args:
-	  command: Command and arguments as a list.
-	"""
-	for arg in command:
-		if arg.startswith('-'):
-			stdout.write("\\\n    ")
-
-		if ' ' in arg or '#' in arg:
-			stdout.write(repr(arg))
-		else:
-			stdout.write(arg)
-
-		stdout.write(' ')
-
-	stdout.write('\n')
-	return subprocess.call(command)
-
 class Font(object):
 	def __init__(self, fontdir, kerning_table={}):
 		self.fontdir = fontdir