def readChartFile(self, file_handle):
'''
Here we do the heavy lifting of parsing the chart file. Should only be
called from the constructor, and takes a file handle as argument.
'''
# Read the file into memory.
all_lines = file_handle.readlines()
# Now create an itteratible array so we know which line we're on.
line_numbers = range(len(all_lines))
# Create a line.
current_line = Line()
# Variable for tracking data lines.
data_line = 0
# Now read the lines.
for i in line_numbers:
# Ignore comments.
if all_lines[i].startswith('#'):
continue
# Ignore blank lines.
elif all_lines[i].isspace():
continue
# When we find ! set that line in the pages array.
elif all_lines[i].startswith('!'):
self.addPage(data_line)
continue
# If we find a Font, set the line font.
elif all_lines[i].upper().startswith('FONT'):
line = all_lines[i]
key, value = line.split('=')
current_line.setFont(value.strip())
continue
# If we find a Linesize spec., set line spacing.
elif all_lines[i].upper().startswith('LINESIZE'):
line = all_lines[i]
key, value = line.split('=')
current_line.setLineSpacing(value.strip())
continue
# If we find a ColumnSize spec., set the column spacing.
elif all_lines[i].upper().startswith('COLUMNSIZES'):
line = all_lines[i]
key, value = line.split('=')
current_line.setColumnSizes(value)
continue
# If we have a data line...
elif all_lines[i].upper().startswith('20'):
line = all_lines[i]
# Increment the number of data lines.
data_line += 1
# Set the default character to 0.
default_chr_pos = 0
current_line.setDefaultCharacter(default_chr_pos)
# Check for multiple columns.
line_sections = line.split('|')
for each_section in line_sections:
ratio, text = each_section.split(':')
ratio = ratio.strip()
text = text.strip()
# Check for default character markers.
for chr in text:
if chr == '~':
text = text.replace('~', '', 1)
# Sanity check for position.
if default_chr_pos >= len(line):
default_chr_pos = len(line) - 1
current_line.setDefaultCharacter(default_chr_pos)
break
else:
default_chr_pos += 1
# Strip out any quote marks.
if text.startswith('"') or text.startswith("'"):
text = text.strip('"\'')
# Check for blank lines - insert a space in that case.
if text == '':
text = ' '
# Add a section to the current line.
a_section = Section(ratio, text)
current_line.addSection(a_section)
# Done parsing line. Now add it to the chart.
# Note we do NOT creat a new line, as this would clear the spacing
# and font and those are only cleared if specified again or a new
# chart file is loaded. BUT we DO clear the line sections - the
# text and ratios or else we continue appending and get all sections
# is all the lines.
self.addLine(current_line)
current_line.clearSections()
continue
else:
print "I don't know how to handle this line: \n#%i, %s" %(i, all_lines[i])
continue
return True
