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freetype/docs/docmaker.py

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#!/usr/bin/env python
#
# DocMaker is a very simple program used to generate HTML documentation
# from the source files of the FreeType packages.
#
import fileinput, sys, string
html_header = """
<html>
<header>
<title>FreeType 2 API Reference</title>
<basefont face="Georgia, Arial, Helvetica, Geneva">
<style content="text/css">
P { text-align=justify }
H1 { text-align=center }
H2 { text-align=center }
LI { text-align=justify }
</style>
</header>
<body text="#000000"
bgcolor="#FFFFFF"
link="#0000EF"
vlink="#51188E"
alink="#FF0000">
<center><h1>FreeType 2 API Reference</h1></center>
<center><table width="80%"><tr><td>
"""
html_footer = """
</td></tr>
</table></center>
</body>
</html>
"""
code_header = """
<font color=blue><pre>
"""
code_footer = """
</pre></font>
"""
para_header = "<p>"
para_footer = "</p>"
block_header = """<table width="100%"><tr><td>"""
block_footer = "</table>"
source_header = """<table width="100%"><tr bgcolor="#D6E8FF" width="100%"><td><pre>
"""
source_footer = """</pre></table>
<br><br>
"""
# The FreeType 2 reference is extracted from the source files. These contain
# various comment blocks that follow one of the following formats:
#
# /**************************
# *
# * FORMAT1
# *
# *
# *
# *
# *************************/
#
# /**************************/
# /* */
# /* FORMAT2 */
# /* */
# /* */
# /* */
# /* */
#
# /**************************/
# /* */
# /* FORMAT3 */
# /* */
# /* */
# /* */
# /* */
# /**************************/
#
# Each block contains a list of markers, each one can be followed by
# some arbitrary text or a list of fields. Here's an example:
#
# <Struct>
# MyStruct
#
# <Description>
# this structure holds some data
#
# <Fields>
# x :: horizontal coordinate
# y :: vertical coordinate
#
#
# This example defines three markers: 'Struct', 'Description' & 'Fields'
# The first two markers contain arbitrary text, while the last one contains
# a list of field
#
#
# each field is simple of the format: WORD :: TEXT....
#
# Note that typically, each comment block is followed by some source
# code declaration that may need to be kept in the reference..
#
def make_block_list():
"""parse a file and extract comments blocks from it"""
list = []
block = []
format = 0
# we use "format" to store the state of our parser:
#
# 0 - wait for beginning of comment
# 1 - parse comment format 1
# 2 - parse comment format 2
#
# 4 - wait for beginning of source (or comment ??)
# 5 - process source
#
comment = []
source = []
state = 0
for line in fileinput.input():
l = len( line )
if l > 0 and line[l - 1] == '\012':
line = line[0 : l - 1]
# stripped version of the line
line2 = string.strip( line )
l = len( line2 )
# if this line begins with a comment and we are processing some
# source, exit to state 0
#
if format >= 4 and l > 2 and line2[0 : 2] == '/*':
list.append( ( block, source ) )
format = 0
if format == 0: #### wait for beginning of comment ####
if l > 3 and line2[0 : 3] == '/**':
i = 3
while i < l and line2[i] == '*':
i = i + 1
if i == l:
# this is '/**' followed by any number of '*', the
# beginning of a Format 1 block
#
block = []
source = []
format = 1
elif i == l - 1 and line2[i] == '/':
# this is '/**' followed by any number of '*', followed
# by a '/', i.e. the beginning of a Format 2 or 3 block
#
block = []
source = []
format = 2
##############################################################
#
# FORMAT 1
#
elif format == 1:
# if the line doesn't begin with a "*", something went
# wrong, and we must exit, and forget the current block..
if l == 0 or line2[0] != '*':
block = []
format = 0
# otherwise, we test for an end of block, which is an
# arbitrary number of '*', followed by '/'
else:
i = 1
while i < l and line2[i] == '*':
i = i + 1
# test for the end of the block
if i < l and line2[i] == '/':
if block != []:
format = 4
else:
format = 0
else:
# otherwise simply append line to current block
block.append( line2 )
continue
##############################################################
#
# FORMAT 2
#
elif format == 2:
# if the line doesn't begin with '/*' and end with '*/',
# this is the end of the format 2 format
if l < 4 or line2[: 2] != '/*' or line2[-2 :] != '*/':
if block != []:
format = 4
else:
format = 0
else:
# remove the start and end comment delimiters, then
# right-strip the line
line2 = string.rstrip( line2[2 : -2] )
# check for end of a format2 block, i.e. a run of '*'
if string.count( line2, '*' ) == l - 4:
if block != []:
format = 4
else:
format = 0
else:
# otherwise, add the line to the current block
block.append( line2 )
continue
if format >= 4: #### source processing ####
if l > 0:
format = 5
if format == 5:
source.append( line )
if format >= 4:
list.append( [block, source] )
return list
# This function is only used for debugging
#
def dump_block_list( list ):
"""dump a comment block list"""
for block in list:
print "----------------------------------------"
for line in block[0]:
print line
for line in block[1]:
print line
print "---------the end-----------------------"
##############################################################################
#
# The DocCode class is used to store source code lines
#
class DocCode:
def __init__( self, margin = 0 ):
self.lines = []
self.margin = margin
def add( self, line ):
# remove margin whitespace
if string.strip( line[: self.margin] ) == "":
line = line[self.margin :]
self.lines.append( line )
def dump( self ):
max_width = 50
for line in self.lines:
print "--" + line
print ""
def dump_html( self ):
# clean the last empty lines
l = len( self.lines ) - 1
while len > 0 and string.strip( lines[len - 1] ) == "":
len = len - 1
print code_header
for line in self.lines[0 : len]:
print lines
print code_footer
##############################################################################
#
# The DocParagraph is used to store text paragraphs
# self.words is simply a list of words for the paragraph
#
class DocParagraph:
def __init__( self ):
self.words = []
def add( self, line ):
# get rid of unwanted spaces in the paragraph
#
# the following line is the same as
#
# self.words.extend( string.split( line ) )
#
# but older Python versions don't have the `extend' attribute
#
self.words[len( self.words ) : len( self.words )] = \
string.split( line )
def dump( self ):
max_width = 50
cursor = 0
line = ""
for word in self.words:
if cursor + len( word ) + 1 > max_width:
print line
cursor = 0
line = ""
line = line + word + " "
cursor = cursor + len( word ) + 1
if cursor > 0:
print line
print ""
def dump_html( self ):
print para_header
self.dump()
print para_footer
###########################################################################
#
# DocContent is used to store the content of a given marker.
#
class DocContent:
def __init__( self, lines_list ):
self.items = []
code_mode = 0
code_margin = 0
text = []
paragraph = None
code = None
elements = []
field = None
for aline in lines_list:
if code_mode == 0:
line = string.lstrip( aline )
l = len( line )
margin = len( aline ) - l
# if the line is empty, this is the end of the current
# paragraph
if l == 0 or line == '{':
if paragraph:
elements.append( paragraph )
paragraph = None
if line == "":
continue
code_mode = 1
code_margin = margin
code = None
continue
words = string.split( line )
# test for a field delimiter on the start of the line, i.e.
# the token `::'
#
if len( words ) >= 2 and words[1] == "::":
if paragraph:
elements.append( paragraph )
paragraph = None
self.items.append( ( field, elements ) )
field = words[0]
elements = []
words = words[2 :]
if len( words ) > 0:
line = string.join( words )
if not paragraph:
paragraph = DocParagraph()
paragraph.add( line )
else:
line = aline
# the code block ends with a line that has a single '}' on it
if line == " " * code_margin + '}':
if code:
elements.append( code )
code = None
code_mode = 0
code_margin = 0
# otherwise, add the line to the current paragraph
else:
if not code:
code = DocCode()
code.add( line )
if paragraph:
elements.append( paragraph )
if code:
elements.append( code )
self.items.append( ( field, elements ) )
def dump( self ):
for item in self.items:
field = item[0]
if field:
print "<field " + field + ">"
for element in item[1]:
element.dump()
if field:
print "</field> "
def dump_html( self ):
n = len( self.items )
in_table = 0
for i in range( n ):
item = self.items[i]
field = item[0]
if not field:
if in_table:
print "</td></tr></table>"
in_table = 0
for element in item[1]:
element.dump_html()
else:
if not in_table:
print "<table cellpadding=4><tr valign=top><td>"
in_table = 1
else:
print "</td></tr><tr valign=top><td>"
print "<b>" + field + "</b></td><td>"
for element in item[1]:
element.dump_html()
if in_table:
print "</td></tr></table>"
######################################################################################
#
#
# The DocBlock class is used to store a given comment block. It contains
# a list of markers, as well as a list of contents for each marker.
#
#
class DocBlock:
def __init__( self, block_line_list = [], source_line_list = [] ):
self.markers = []
self.contents = []
self.source = source_line_list
marker = ""
content = []
alphanum = string.letters + string.digits + "_"
for line in block_line_list:
line2 = string.lstrip( line )
l = len( line2 )
margin = len( line ) - l
if l > 3 and line2[0] == '<':
i = 1
while i < l and line2[i] in alphanum:
i = i + 1
if i < l and line2[i] == '>':
if marker or content:
self.add( marker, content )
marker = line2[1 : i]
content = []
line2 = string.lstrip( line2[i + 1 :] )
l = len( line2 )
line = " " * margin + line2
content.append( line )
if marker or content:
self.add( marker, content )
def add( self, marker, lines ):
# remove the first and last empty lines from the content list
l = len( lines )
if l > 0:
i = 0
while l > 0 and string.strip( lines[l - 1] ) == "":
l = l - 1
while i < l and string.strip( lines[i] ) == "":
i = i + 1
lines = lines[i : l]
l = len( lines )
# add a new marker only if its marker and its content list aren't empty
if l > 0 and marker:
self.markers.append( marker )
self.contents.append( lines )
def dump( self ):
for i in range( len( self.markers ) ):
print "[" + self.markers[i] + "]"
for line in self.contents[i]:
print "-- " + line
def doc_contents( self ):
contents = []
for item in self.contents:
contents.append( DocContent( item ) )
return contents
def dump_doc_blocks( block_list ):
for block in block_list:
docblock = DocBlock( block )
docblock.dump()
print "<<------------------->>"
#
#
#
def dump_single_content( block_list ):
block = block_list[0]
docblock = DocBlock( block )
print "<block>"
for i in range( len( docblock.markers ) ):
marker = docblock.markers[i]
contents = docblock.contents[i]
print "<marker " + marker + ">"
doccontent = DocContent( contents )
doccontent.dump()
print "</marker>"
print "</block>"
def dump_doc_contents( block_list ):
for block in block_list:
docblock = DocBlock( block )
print "<block>"
for i in range( len( docblock.markers ) ):
print "<marker " + docblock.markers[i] + ">"
content = DocContent( docblock.contents[i] )
content.dump()
print "</marker>"
print "</block>"
def dump_html_1( block_list ):
print html_header
types = [ 'Type', 'Struct', 'FuncType', 'Function', 'Constant',
'Enumeration' ]
for block in block_list:
docblock = DocBlock( block[0], block[1] )
if len( docblock.markers ) == 0:
continue
print block_header
for i in range( len( docblock.markers ) ):
marker = docblock.markers[i]
content = docblock.contents[i]
dcontent = DocContent( content )
if marker == "Description":
print "<ul><p>"
dcontent.dump()
print "</p></ul>"
elif marker in types:
print "<h3><font color=blue>" + content[0] + "</font></h3>"
else:
print "<h4>" + marker + "</h4>"
print "<ul><p>"
dcontent.dump_html()
print "</p></ul>"
print ""
print block_footer
# print source code
lines = block[1]
l = len( lines ) - 1
while l >= 0 and string.strip( lines[l] ) == "":
l = l - 1
print source_header
for line in lines[0 : l + 1]:
print line
print source_footer
print html_footer
def main( argv ):
"""main program loop"""
sys.stderr.write( "extracting comment blocks from sources...\n" )
list = make_block_list()
dump_html_1( list )
# If called from the command line
if __name__ == '__main__':
main( sys.argv )
# eof