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#!/usr/bin/env python
"""Examine and fix the height/width attributes on IMG tags in the given files.
"""
#'$Id: imgfix.py,v 1.2 1998/05/28 20:14:52 friedric Exp $'
# COPYRIGHT (C) 1998 ROBIN FRIEDRICH email:Robin.Friedrich@pdq.net
# Permission to use, copy, modify, and distribute this software and
# its documentation for any purpose and without fee is hereby granted,
# provided that the above copyright notice appear in all copies and
# that both that copyright notice and this permission notice appear in
# supporting documentation.
# THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
# ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL THE
# AUTHOR BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
import re, sys, getopt, os
from string import lower
from imgsize import imgsize
USAGE = """imgfix.py [-c] [-n] [-d /docrootdir] file [more files]
-c Conservative mode will assume all existing img tag properties are
correct and will only add width/height where they do not exist.
-n No-Op mode. Prints what imgfix would do. No files touched.
-d /docrootdir provide a directory path to use when img src tags use
absolute paths (i.e. start with /). Used to locate image files only.
file(s) containing HTML IMG tags to be fixed.
"""
cwd = os.getcwd()
def main(filename):
os.chdir(cwd)
dirname, filename = os.path.split(filename)
os.chdir(dirname or cwd)
f = open(filename)
s = f.read()
f.close()
s2, n = imgprog.subn(fixsize, s)
if not NOOP:
g = open(filename+'_', 'w')
g.write(s2)
g.close()
os.rename(filename, filename+'~')
os.rename(filename+'_', filename)
print "%s, %d image tag(s)" % (filename, n)
def fixsize(imgmatch):
"""fixsize(imgmatch) imgmatch is a match object containing an IMG tag.
Will return a new IMG tag containing verified height and width properties.
All other properties are left alone.
"""
imgcontent = imgmatch.group(1)
if NOOP: print imgmatch.group(0), "<<< Original"
attrs = ['src', 'width', 'height']
dict = {}
i = 0
while 1:
m = atrprog.search(imgcontent, i)
if m is None: break
name, value = lower(m.group(1)), unquote(m.group(2))
i = m.end(1)
if not attrs.count(name):
attrs.append(name)
dict[name] = value
# CONSERV set true means if the IMG has an existing width property trust it.
if CONSERV and dict.has_key('width')and dict.has_key('height'):
return imgmatch.group(0)
srcpath = dict['src']
if srcpath[0] == '/': #SRC path starting with / will be relative to docroot
srcpath = os.path.join(DOCROOT, srcpath[1:])
try:
f = open(srcpath)
dict['width'], dict['height'] = imgsize(srcpath)
except IOError: # if file not found or not a valid graphic format
return imgmatch.group(0) #leave it unchanged
s = '<img'
for name in attrs:
s = s + ' %s="%s"' % (name, dict[name])
s = s + '>'
if NOOP: print s, "<<< New Value"
return s
def unquote(s):
if not s: return s
if (s[0] == '"' and s[-1] == '"') or \
(s[0] == "'" and s[-1] == "'"):
s = s[1:-1]
return s
#I placed these regexes at the end because they mess up Xemacs fontlock mode.
imgprog = re.compile(r'<\s*IMG([^>]+)\s*>', re.IGNORECASE)
atrprog = re.compile(r'''\s*(\w+)\s*=\s*("[^"]*"|'[^']*'|\S+)''')
NOOP = 0
CONSERV = 0
DOCROOT = os.curdir
if __name__ == '__main__':
try:
opts, args = getopt.getopt(sys.argv[1:], "ncd:")
except getopt.error:
print USAGE
sys.exit(1)
for opt, optarg in opts:
if opt == '-n':
NOOP = 1
elif opt == '-c':
CONSERV = 1
elif opt == '-d':
DOCROOT = optarg
for filename in args:
main(filename)
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