Difference between revisions of "From (filter)"
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The <tt>from</tt> [[filter]] performs a traditional UNIX processing of lines starting with a <tt>From</tt> followed by a space character. | The <tt>from</tt> [[filter]] performs a traditional UNIX processing of lines starting with a <tt>From</tt> followed by a space character. | ||
+ | ; [[MU_FILTER_ENCODE|Encode]] mode | ||
+ | : In encode mode, each "<tt>From </tt>" at the beginning of a line is replaced by "<tt>>From </tt>" | ||
; [[MU_FILTER_DECODE|Decode]] mode | ; [[MU_FILTER_DECODE|Decode]] mode | ||
− | : In decode | + | : In decode mode, the reverse operation is performed: initial ''greater-then'' sign (<tt>></tt>) is removed from any line starting with "<tt>>From </tt>". |
− | |||
− | |||
The following code creates an instance of read-only <tt>from</tt> stream which adds the ''greater-than'' character to each "<tt>>From </tt>" at the beginning of a line (the <tt>mu_stream_t input</tt> is supposed to have been initialized previously): | The following code creates an instance of read-only <tt>from</tt> stream which adds the ''greater-than'' character to each "<tt>>From </tt>" at the beginning of a line (the <tt>mu_stream_t input</tt> is supposed to have been initialized previously): |
Revision as of 12:06, 1 November 2011
The from filter performs a traditional UNIX processing of lines starting with a From followed by a space character.
- Encode mode
- In encode mode, each "From " at the beginning of a line is replaced by ">From "
- Decode mode
- In decode mode, the reverse operation is performed: initial greater-then sign (>) is removed from any line starting with ">From ".
The following code creates an instance of read-only from stream which adds the greater-than character to each ">From " at the beginning of a line (the mu_stream_t input is supposed to have been initialized previously):
int rc; /* Return code */
mu_stream_t flt; /* Filter stream */
rc = mu_filter_stream_create (&flt, input, "from", MU_FILTER_ENCODE, MU_STREAM_READ);
The object describing this filter is declared in mailutils/filter.h as follows:
extern mu_filter_record_t mu_from_filter;