path: root/vcs-svn/line_buffer.txt
AgeCommit message (Collapse)Author
2011-03-26vcs-svn: remove buffer_read_stringJonathan Nieder
All previous users of buffer_read_string have already been converted to use the more intuitive buffer_read_binary, so remove the old API to avoid some confusion. Signed-off-by: Jonathan Nieder <>
2011-03-22vcs-svn: make buffer_skip_bytes return length readJonathan Nieder
Currently there is no way to detect when input ended if it ended early during buffer_skip_bytes. Tell the calling program how many bytes were actually skipped for easier debugging. Existing callers will still ignore early EOF. Signed-off-by: Jonathan Nieder <> Signed-off-by: David Barr <> Signed-off-by: Jonathan Nieder <>
2011-02-26vcs-svn: teach line_buffer about temporary filesJonathan Nieder
It can sometimes be useful to write information temporarily to file, to read back later. These functions allow a program to use the line_buffer facilities when doing so. It works like this: 1. find a unique filename with buffer_tmpfile_init. 2. rewind with buffer_tmpfile_rewind. This returns a stdio handle for writing. 3. when finished writing, declare so with buffer_tmpfile_prepare_to_read. The return value indicates how many bytes were written. 4. read whatever portion of the file is needed. 5. if finished, remove the temporary file with buffer_deinit. otherwise, go back to step 2, The svn support would use this to buffer the postimage from delta application until the length is known and fast-import can receive the resulting blob. Based-on-patch-by: David Barr <> Signed-off-by: Jonathan Nieder <>
2011-02-26vcs-svn: allow input from file descriptorJonathan Nieder
Based-on-patch-by: David Barr <> Signed-off-by: Jonathan Nieder <>
2011-02-26vcs-svn: teach line_buffer to handle multiple input filesJonathan Nieder
Collect the line_buffer state in a newly public line_buffer struct. Callers can use multiple line_buffers to manage input from multiple files at a time. svn-fe's delta applier will use this to stream a delta from svnrdump and the preimage it applies to from fast-import at the same time. The tests don't take advantage of the new features, but I think that's okay. It is easier to find lingering examples of nonreentrant code by searching for "static" in line_buffer.c. Signed-off-by: Jonathan Nieder <>
2010-08-15Add stream helper libraryDavid Barr
This library provides thread-unsafe fgets()- and fread()-like functions where the caller does not have to supply a buffer. It maintains a couple of static buffers and provides an API to use them. [rr: allow input from files other than stdin] [jn: with tests, documentation, and error handling improvements] Signed-off-by: David Barr <> Signed-off-by: Ramkumar Ramachandra <> Signed-off-by: Jonathan Nieder <> Signed-off-by: Junio C Hamano <>