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#!/usr/local/bin/python
###############################################################################
# Takes a chapter as input and adds internal links and numbering to all
# of the H1, H2, H3, H4 and H5 sections.
#
# Every heading HTML tag (H1, H2 etc) is given an autogenerated name to link
# to. However, if the name is not an autogenerated name from a previous run,
# it will be kept. If it is autogenerated, it might change on subsequent runs
# of this program. Thus if you want to create links to one of the headings,
# then change the heading link name to something that does not look like an
# autogenerated link name.
###############################################################################
import sys
import re
import string
###############################################################################
# Functions
###############################################################################
# Regexs for <a name="..."></a>
alink = re.compile(r"<a *name *= *\"(.*)\"></a>", re.IGNORECASE)
heading = re.compile(r"(_nn\d)", re.IGNORECASE)
def getheadingname(m):
autogeneratedheading = True;
if m.group(1) != None:
amatch = alink.match(m.group(1))
if amatch:
# A non-autogenerated heading - keep it
headingname = amatch.group(1)
autogeneratedheading = heading.match(headingname)
if autogeneratedheading:
# The heading name was either non-existent or autogenerated,
# We can create a new heading / change the existing heading
headingname = "%s_nn%d" % (filenamebase, nameindex)
return headingname
###############################################################################
# Main program
###############################################################################
if len(sys.argv) != 3:
print "usage: makechap.py filename num"
sys.exit(1)
filename = sys.argv[1]
filenamebase = string.split(filename,".")[0]
num = int(sys.argv[2])
section = 0
subsection = 0
subsubsection = 0
nameindex = 0
name = ""
# Regexs for <h1>,... <h5> sections
h1 = re.compile(r".*?<H1>(<a.*a>)*[\d\.\s]*(.*?)</H1>", re.IGNORECASE)
h2 = re.compile(r".*?<H2>(<a.*a>)*[\d\.\s]*(.*?)</H2>", re.IGNORECASE)
h3 = re.compile(r".*?<H3>(<a.*a>)*[\d\.\s]*(.*?)</H3>", re.IGNORECASE)
h4 = re.compile(r".*?<H4>(<a.*a>)*[\d\.\s]*(.*?)</H4>", re.IGNORECASE)
h5 = re.compile(r".*?<H5>(<a.*a>)*[\d\.\s]*(.*?)</H5>", re.IGNORECASE)
data = open(filename).read() # Read data
open(filename+".bak","w").write(data) # Make backup
lines = data.splitlines()
result = [ ] # This is the result of postprocessing the file
index = "<!-- INDEX -->\n<div class=\"sectiontoc\">\n" # index contains the index for adding at the top of the file. Also printed to stdout.
skip = 0
skipspace = 0
for s in lines:
if s == "<!-- INDEX -->":
if not skip:
skip = 1
else:
skip = 0
continue;
if skip:
continue
if not s and skipspace:
continue
if skipspace:
result.append("")
result.append("")
skipspace = 0
m = h1.match(s)
if m:
prevheadingtext = m.group(2)
nameindex += 1
headingname = getheadingname(m)
result.append("""<H1><a name="%s"></a>%d %s</H1>""" % (headingname,num,prevheadingtext))
result.append("@INDEX@")
section = 0
subsection = 0
subsubsection = 0
subsubsubsection = 0
name = prevheadingtext
skipspace = 1
continue
m = h2.match(s)
if m:
prevheadingtext = m.group(2)
nameindex += 1
section += 1
headingname = getheadingname(m)
result.append("""<H2><a name="%s"></a>%d.%d %s</H2>""" % (headingname,num,section, prevheadingtext))
if subsubsubsection:
index += "</ul>\n"
if subsubsection:
index += "</ul>\n"
if subsection:
index += "</ul>\n"
if section == 1:
index += "<ul>\n"
index += """<li><a href="#%s">%s</a>\n""" % (headingname,prevheadingtext)
subsection = 0
subsubsection = 0
subsubsubsection = 0
skipspace = 1
continue
m = h3.match(s)
if m:
prevheadingtext = m.group(2)
nameindex += 1
subsection += 1
headingname = getheadingname(m)
result.append("""<H3><a name="%s"></a>%d.%d.%d %s</H3>""" % (headingname,num,section, subsection, prevheadingtext))
if subsubsubsection:
index += "</ul>\n"
if subsubsection:
index += "</ul>\n"
if subsection == 1:
index += "<ul>\n"
index += """<li><a href="#%s">%s</a>\n""" % (headingname,prevheadingtext)
subsubsection = 0
skipspace = 1
continue
m = h4.match(s)
if m:
prevheadingtext = m.group(2)
nameindex += 1
subsubsection += 1
headingname = getheadingname(m)
result.append("""<H4><a name="%s"></a>%d.%d.%d.%d %s</H4>""" % (headingname,num,section, subsection, subsubsection, prevheadingtext))
if subsubsubsection:
index += "</ul>\n"
if subsubsection == 1:
index += "<ul>\n"
index += """<li><a href="#%s">%s</a>\n""" % (headingname,prevheadingtext)
subsubsubsection = 0
skipspace = 1
continue
m = h5.match(s)
if m:
prevheadingtext = m.group(2)
nameindex += 1
subsubsubsection += 1
headingname = getheadingname(m)
result.append("""<H5><a name="%s"></a>%d.%d.%d.%d.%d %s</H5>""" % (headingname,num,section, subsection, subsubsection, subsubsubsection, prevheadingtext))
if subsubsubsection == 1:
index += "<ul>\n"
index += """<li><a href="#%s">%s</a>\n""" % (headingname,prevheadingtext)
skipspace = 1
continue
result.append(s)
if subsubsubsection:
index += "</ul>\n"
if subsubsection:
index += "</ul>\n"
if subsection:
index += "</ul>\n"
if section:
index += "</ul>\n"
index += "</div>\n<!-- INDEX -->\n"
data = "\n".join(result)
data = data.replace("@INDEX@",index) + "\n";
# Write the file back out
open(filename,"w").write(data)
# Print the TOC data to stdout correcting the anchor links for external referencing
index = index.replace("<li><a href=\"#","<li><a href=\"%s#" % filename)
print """<h3><a href="%s#%s">%d %s</a></h3>\n""" % (filename,filenamebase,num,name)
print index
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