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%%{
machine content_disposition;
# https://tools.ietf.org/html/rfc2045#section-5.1
ccontent = ctext | FWS | '(' @{ fcall balanced_ccontent; };
balanced_ccontent := ccontent* ')' @{ fret; };
comment = "(" (FWS? ccontent)* FWS? ")";
CFWS = ((FWS? comment)+ FWS?) | FWS;
qcontent = qtextSMTP | quoted_pairSMTP;
quoted_string = CFWS?
(DQUOTE
(((FWS? qcontent)* FWS?) >Quoted_Str_Start %Quoted_Str_End)
DQUOTE) CFWS?;
token = 0x21..0x27 | 0x2a..0x2b | 0x2c..0x2e | 0x30..0x39 | 0x41..0x5a | 0x5e..0x7e;
value = (quoted_string | (token -- '"' | 0x3d)+) >Param_Value_Start %Param_Value_End;
attribute = (quoted_string | (token -- '"' | 0x3d)+) >Param_Name_Start %Param_Name_End;
parameter = CFWS? attribute FWS? "=" FWS? value CFWS?;
ietf_token = token+;
custom_x_token = /x/i "-" token+;
extension_token = ietf_token | custom_x_token;
disposition_type = /inline/i %Disposition_Inline | /attachment/i %Disposition_Attachment
| extension_token >Disposition_Start %Disposition_End;
disposition_parm = parameter;
content_disposition = disposition_type (";" disposition_parm)*;
prepush {
if (top >= st_storage.size) {
st_storage.size = (top + 1) * 2;
st_storage.data = realloc (st_storage.data, st_storage.size * sizeof (int));
g_assert (st_storage.data != NULL);
stack = st_storage.data;
}
}
}%%
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