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Commits on Feb 24, 2012
  1. @peff @gitster

    teach convert_to_git a "dry run" mode

    peff authored gitster committed
    Some callers may want to know whether convert_to_git will
    actually do anything before performing the conversion
    itself (e.g., to decide whether to stream or handle blobs
    in-core). This patch lets callers specify the dry run mode
    by passing a NULL destination buffer. The return value,
    instead of indicating whether conversion happened, will
    indicate whether conversion would occur.
    For readability, we also include a wrapper function which
    makes it more obvious we are not actually performing the
    Signed-off-by: Jeff King <>
    Signed-off-by: Junio C Hamano <>
Commits on May 26, 2011
  1. @gitster

    stream filter: add "no more input" to the filters

    gitster authored
    Some filters may need to buffer the input and look-ahead inside it
    to decide what to output, and they may consume more than zero bytes
    of input and still not produce any output. After feeding all the
    input, pass NULL as input as keep calling stream_filter() to let
    such filters know there is no more input coming, and it is time for
    them to produce the remaining output based on the buffered input.
    Signed-off-by: Junio C Hamano <>
  2. @gitster

    Add streaming filter API

    gitster authored
    This introduces an API to plug custom filters to an input stream.
    The caller gets get_stream_filter("path") to obtain an appropriate
    filter for the path, and then uses it when opening an input stream
    via open_istream().  After that, the caller can read from the stream
    with read_istream(), and close it with close_istream(), just like an
    unfiltered stream.
    This only adds a "null" filter that is a pass-thru filter, but later
    changes can add LF-to-CRLF and other filters, and the callers of the
    streaming API do not have to change.
    Signed-off-by: Junio C Hamano <>
  3. @gitster

    convert.h: move declarations for conversion from cache.h

    gitster authored
    Before adding the streaming filter API to the conversion layer,
    move the existing declarations related to the conversion to its
    own header file.
    Signed-off-by: Junio C Hamano <>
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