1
"""Mailcap file handling. See RFC 1524."""
5
__all__ = ["getcaps","findmatch"]
7
# Part 1: top-level interface.
10
"""Return a dictionary containing the mailcap database.
12
The dictionary maps a MIME type (in all lowercase, e.g. 'text/plain')
13
to a list of dictionaries corresponding to mailcap entries. The list
14
collects all the entries for that MIME type from all available mailcap
15
files. Each dictionary contains key-value pairs for that MIME type,
16
where the viewing command is stored with the key "view".
20
for mailcap in listmailcapfiles():
22
fp = open(mailcap, 'r')
26
morecaps = readmailcapfile(fp)
27
for key, value in morecaps.iteritems():
31
caps[key] = caps[key] + value
34
def listmailcapfiles():
35
"""Return a list of all mailcap files found on the system."""
36
# XXX Actually, this is Unix-specific
37
if 'MAILCAPS' in os.environ:
38
str = os.environ['MAILCAPS']
39
mailcaps = str.split(':')
41
if 'HOME' in os.environ:
42
home = os.environ['HOME']
44
# Don't bother with getpwuid()
45
home = '.' # Last resort
46
mailcaps = [home + '/.mailcap', '/etc/mailcap',
47
'/usr/etc/mailcap', '/usr/local/etc/mailcap']
53
def readmailcapfile(fp):
54
"""Read a mailcap file and return a dictionary keyed by MIME type.
56
Each MIME type is mapped to an entry consisting of a list of
57
dictionaries; the list will contain more than one such dictionary
58
if a given MIME type appears more than once in the mailcap file.
59
Each dictionary contains key-value pairs for that MIME type, where
60
the viewing command is stored with the key "view".
66
# Ignore comments and blank lines
67
if line[0] == '#' or line.strip() == '':
70
# Join continuation lines
71
while nextline[-2:] == '\\\n':
72
nextline = fp.readline()
73
if not nextline: nextline = '\n'
74
line = line[:-2] + nextline
76
key, fields = parseline(line)
77
if not (key and fields):
80
types = key.split('/')
81
for j in range(len(types)):
82
types[j] = types[j].strip()
83
key = '/'.join(types).lower()
86
caps[key].append(fields)
92
"""Parse one entry in a mailcap file and return a dictionary.
94
The viewing command is stored as the value with the key "view",
95
and the rest of the fields produce key-value pairs in the dict.
100
field, i = parsefield(line, i, n)
102
i = i+1 # Skip semicolon
105
key, view, rest = fields[0], fields[1], fields[2:]
106
fields = {'view': view}
113
fkey = field[:i].strip()
114
fvalue = field[i+1:].strip()
119
fields[fkey] = fvalue
122
def parsefield(line, i, n):
123
"""Separate one key-value pair in a mailcap entry."""
133
return line[start:i].strip(), i
136
# Part 3: using the database.
138
def findmatch(caps, MIMEtype, key='view', filename="/dev/null", plist=[]):
139
"""Find a match for a mailcap entry.
141
Return a tuple containing the command line, and the mailcap entry
142
used; (None, None) if no match is found. This may invoke the
143
'test' command of several matching entries before deciding which
147
entries = lookup(caps, MIMEtype, key)
148
# XXX This code should somehow check for the needsterminal flag.
151
test = subst(e['test'], filename, plist)
152
if test and os.system(test) != 0:
154
command = subst(e[key], MIMEtype, filename, plist)
158
def lookup(caps, MIMEtype, key=None):
161
entries = entries + caps[MIMEtype]
162
MIMEtypes = MIMEtype.split('/')
163
MIMEtype = MIMEtypes[0] + '/*'
165
entries = entries + caps[MIMEtype]
167
entries = filter(lambda e, key=key: key in e, entries)
170
def subst(field, MIMEtype, filename, plist=[]):
171
# XXX Actually, this is Unix-specific
175
c = field[i]; i = i+1
178
c = field[i:i+1]; i = i+1
181
c = field[i]; i = i+1
190
while i < n and field[i] != '}':
192
name = field[start:i]
194
res = res + findparam(name, plist)
196
# %n == number of parts if type is multipart/*
197
# %F == list of alternating type and filename for parts
202
def findparam(name, plist):
203
name = name.lower() + '='
206
if p[:n].lower() == name:
211
# Part 4: test program.
219
for i in range(1, len(sys.argv), 2):
220
args = sys.argv[i:i+2]
222
print "usage: mailcap [MIMEtype file] ..."
226
command, e = findmatch(caps, MIMEtype, 'view', file)
228
print "No viewer found for", type
230
print "Executing:", command
231
sts = os.system(command)
233
print "Exit status:", sts
236
print "Mailcap files:"
237
for fn in listmailcapfiles(): print "\t" + fn
239
if not caps: caps = getcaps()
240
print "Mailcap entries:"
251
print " %-15s" % k, e[k]
254
if __name__ == '__main__':
1
"""Mailcap file handling. See RFC 1524."""
5
__all__ = ["getcaps","findmatch"]
7
# Part 1: top-level interface.
10
"""Return a dictionary containing the mailcap database.
12
The dictionary maps a MIME type (in all lowercase, e.g. 'text/plain')
13
to a list of dictionaries corresponding to mailcap entries. The list
14
collects all the entries for that MIME type from all available mailcap
15
files. Each dictionary contains key-value pairs for that MIME type,
16
where the viewing command is stored with the key "view".
20
for mailcap in listmailcapfiles():
22
fp = open(mailcap, 'r')
26
morecaps = readmailcapfile(fp)
27
for key, value in morecaps.iteritems():
31
caps[key] = caps[key] + value
34
def listmailcapfiles():
35
"""Return a list of all mailcap files found on the system."""
36
# XXX Actually, this is Unix-specific
37
if 'MAILCAPS' in os.environ:
38
str = os.environ['MAILCAPS']
39
mailcaps = str.split(':')
41
if 'HOME' in os.environ:
42
home = os.environ['HOME']
44
# Don't bother with getpwuid()
45
home = '.' # Last resort
46
mailcaps = [home + '/.mailcap', '/etc/mailcap',
47
'/usr/etc/mailcap', '/usr/local/etc/mailcap']
53
def readmailcapfile(fp):
54
"""Read a mailcap file and return a dictionary keyed by MIME type.
56
Each MIME type is mapped to an entry consisting of a list of
57
dictionaries; the list will contain more than one such dictionary
58
if a given MIME type appears more than once in the mailcap file.
59
Each dictionary contains key-value pairs for that MIME type, where
60
the viewing command is stored with the key "view".
66
# Ignore comments and blank lines
67
if line[0] == '#' or line.strip() == '':
70
# Join continuation lines
71
while nextline[-2:] == '\\\n':
72
nextline = fp.readline()
73
if not nextline: nextline = '\n'
74
line = line[:-2] + nextline
76
key, fields = parseline(line)
77
if not (key and fields):
80
types = key.split('/')
81
for j in range(len(types)):
82
types[j] = types[j].strip()
83
key = '/'.join(types).lower()
86
caps[key].append(fields)
92
"""Parse one entry in a mailcap file and return a dictionary.
94
The viewing command is stored as the value with the key "view",
95
and the rest of the fields produce key-value pairs in the dict.
100
field, i = parsefield(line, i, n)
102
i = i+1 # Skip semicolon
105
key, view, rest = fields[0], fields[1], fields[2:]
106
fields = {'view': view}
113
fkey = field[:i].strip()
114
fvalue = field[i+1:].strip()
119
fields[fkey] = fvalue
122
def parsefield(line, i, n):
123
"""Separate one key-value pair in a mailcap entry."""
133
return line[start:i].strip(), i
136
# Part 3: using the database.
138
def findmatch(caps, MIMEtype, key='view', filename="/dev/null", plist=[]):
139
"""Find a match for a mailcap entry.
141
Return a tuple containing the command line, and the mailcap entry
142
used; (None, None) if no match is found. This may invoke the
143
'test' command of several matching entries before deciding which
147
entries = lookup(caps, MIMEtype, key)
148
# XXX This code should somehow check for the needsterminal flag.
151
test = subst(e['test'], filename, plist)
152
if test and os.system(test) != 0:
154
command = subst(e[key], MIMEtype, filename, plist)
158
def lookup(caps, MIMEtype, key=None):
161
entries = entries + caps[MIMEtype]
162
MIMEtypes = MIMEtype.split('/')
163
MIMEtype = MIMEtypes[0] + '/*'
165
entries = entries + caps[MIMEtype]
167
entries = filter(lambda e, key=key: key in e, entries)
170
def subst(field, MIMEtype, filename, plist=[]):
171
# XXX Actually, this is Unix-specific
175
c = field[i]; i = i+1
178
c = field[i:i+1]; i = i+1
181
c = field[i]; i = i+1
190
while i < n and field[i] != '}':
192
name = field[start:i]
194
res = res + findparam(name, plist)
196
# %n == number of parts if type is multipart/*
197
# %F == list of alternating type and filename for parts
202
def findparam(name, plist):
203
name = name.lower() + '='
206
if p[:n].lower() == name:
211
# Part 4: test program.
219
for i in range(1, len(sys.argv), 2):
220
args = sys.argv[i:i+2]
222
print "usage: mailcap [MIMEtype file] ..."
226
command, e = findmatch(caps, MIMEtype, 'view', file)
228
print "No viewer found for", type
230
print "Executing:", command
231
sts = os.system(command)
233
print "Exit status:", sts
236
print "Mailcap files:"
237
for fn in listmailcapfiles(): print "\t" + fn
239
if not caps: caps = getcaps()
240
print "Mailcap entries:"
251
print " %-15s" % k, e[k]
254
if __name__ == '__main__':
added
removed
python/Lib/mailcap.py
