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path: root/lib/libalpm/delta.h
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* Use correct C type for file sizesDan McGee2008-06-04
| | | | | | | | | | | | | | We have been using unsigned long as a file size type for a while, which works but isn't quite correct and could easily break. Worse was probably our use of int in the download callback functions, which could be restrictive for packages > 2GB in size. Switch all file size variables to use off_t, which is the preferred type for file sizes. Note that at least on Linux, all applications compiled against libalpm must now be sure to use large file support, where _FILE_OFFSET_BITS is defined to be 64 or there will be some weird issues that crop up. Signed-off-by: Dan McGee <dan@archlinux.org>
* Completely rework delta algorithmChantry Xavier2008-04-26
| | | | | | | | | | | | | | | | | | | | Using the graph structures that Nagy set up for dependency sorting, we now do a similar process for deltas. Load up all of the deltas into a graph object on which we can then apply Dijkstra's algorithm, using the new weight field of graph struct. We initialize the nodes weight using the base files that we can use in our filecache (both filename and md5sum must match). The algorithm then picks the best path among those that can be resolved. Note that this algorithm has a few advantages over the old one: 1. It is completely file agnostic. These delta chains do not have to consist of package files- this could be adopted to do delta-fied DBs. 2. It does not use the local_db anymore, or even care if a package or file is currently installed. Instead, it only looks in the filecache for files and packages that match delta chain entries. Original-work-by: Dan McGee <dan@archlinux.org> Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
* Rework delta struct and modify code accordinglyDan McGee2008-04-26
| | | | | | | | | | Start to move the delta struct away from an assumed package name scheme and towards something that is package (or even filename) agnostic. This will allow us much greater flexibility in the usage of deltas (maybe even sync DBs some day) as well as allowing code outside of delta.h/delta.c to be much cleaner with less of a need for snprintf() calls. Signed-off-by: Dan McGee <dan@archlinux.org>
* Convert deltas to dynamic allocationDan McGee2008-01-21
| | | | | | | | Another elimination of a static length structure in libalpm. Should result in a little more memory saved during execution of packages with lots of deltas attached. Signed-off-by: Dan McGee <dan@archlinux.org>
* Update GNU GPL boilerplate and copyright datesDan McGee2007-12-10
| | | | | | | Update the GPL boilerplate to direct people to the GNU website for a copy of the license, as well as bump all of Judd's copyrights to 2007. Signed-off-by: Dan McGee <dan@archlinux.org>
* War on whitespaceDan McGee2007-11-16
| | | | | | Run the kernel's cleanfile script on all of our source files. Signed-off-by: Dan McGee <dan@archlinux.org>
* Add pmdelta_t structure and functions to libalpm.Nathan Jones2007-10-19
Signed-off-by: Nathan Jones <nathanj@insightbb.com> Signed-off-by: Dan McGee <dan@archlinux.org>