[none] kbd-scrolllock kbd-numlock kbd-capslock kbd-kanalock kbd-shiftlock kbd-altgrlock kbd-ctrllock kbd-altlock kbd-shiftllock kbd-shiftrlock kbd-ctrlllock kbd-ctrlrlock 
     ˆÀÁƒy ÄÃ  Ð    """Mailcap file handling.  See RFC 1524."""

import os
import warnings
import re

__all__ = ["getcaps","findmatch"]

# Part 1: top-level interface.

def getcaps():
    """Return a dictionary containing the mailcap database.

    The dictionary maps a MIME type (in all lowercase, e.g. 'text/plain')
    to a list of dictionaries corresponding to mailcap entries.  The list
    collects all the entries for that MIME type from all available mailcap
    files.  Each dictionary contains key-value pairs for that MIME type,
    where the viewing command is stored with the key "view".

    """
    caps = {}
    for mailcap in listmailcapfiles():
        try:
            fp = open(mailcap, 'r')
        except IOError:
            continue
        morecaps = readmailcapfile(fp)
        fp.close()
        for key, value in morecaps.iteritems():
            if not key in caps:
                caps[key] = value
            else:
                caps[key] = caps[key] + value
    return caps

def listmailcapfiles():
    """Return a list of all mailcap files found on the system."""
    # XXX Actually, this is Unix-specific
    if 'MAILCAPS' in os.environ:
        str = os.environ['MAILCAPS']
        mailcaps = str.split(':')
    else:
        if 'HOME' in os.environ:
            home = os.environ['HOME']
        else:
            # Don't bother with getpwuid()
            home = '.' # Last resort
        mailcaps = [home + '/.mailcap', '/etc/mailcap',
                '/usr/etc/mailcap', '/usr/local/etc/mailcap']
    return mailcaps

_find_unsafe = re.compile(r'[^\xa1-\xff\w@+=:,./-]').search

class UnsafeMailcapInput(Warning):
    """Warning raised when refusing unsafe input"""


# Part 2: the parser.

def readmailcapfile(fp):
    """Read a mailcap file and return a dictionary keyed by MIME type.

    Each MIME type is mapped to an entry consisting of a list of
    dictionaries; the list will contain more than one such dictionary
    if a given MIME type appears more than once in the mailcap file.
    Each dictionary contains key-value pairs for that MIME type, where
    the viewing command is stored with the key "view".
    """
    caps = {}
    while 1:
        line = fp.readline()
        if not line: break
        # Ignore comments and blank lines
        if line[0] == '#' or line.strip() == '':
            continue
        nextline = line
        # Join continuation lines
        while nextline[-2:] == '\\\n':
            nextline = fp.readline()
            if not nextline: nextline = '\n'
            line = line[:-2] + nextline
        # Parse the line
        key, fields = parseline(line)
        if not (key and fields):
            continue
        # Normalize the key
        types = key.split('/')
        for j in range(len(types)):
            types[j] = types[j].strip()
        key = '/'.join(types).lower()
        # Update the database
        if key in caps:
            caps[key].append(fields)
        else:
            caps[key] = [fields]
    return caps

def parseline(line):
    """Parse one entry in a mailcap file and return a dictionary.

    The viewing command is stored as the value with the key "view",
    and the rest of the fields produce key-value pairs in the dict.
    """
    fields = []
    i, n = 0, len(line)
    while i < n:
        field, i = parsefield(line, i, n)
        fields.append(field)
        i = i+1 # Skip semicolon
    if len(fields) < 2:
        return None, None
    key, view, rest = fields[0], fields[1], fields[2:]
    fields = {'view': view}
    for field in rest:
        i = field.find('=')
        if i < 0:
            fkey = field
            fvalue = ""
        else:
            fkey = field[:i].strip()
            fvalue = field[i+1:].strip()
        if fkey in fields:
            # Ignore it
            pass
        else:
            fields[fkey] = fvalue
    return key, fields

def parsefi