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2009-03-21Merge branch 'jc/maint-1.6.0-pack-directory' into maint-1.6.1Libravatar Junio C Hamano1-9/+5
* jc/maint-1.6.0-pack-directory: Fix odb_mkstemp() on AIX Make sure objects/pack exists before creating a new pack Conflicts: wrapper.c
2009-02-25Make sure objects/pack exists before creating a new packLibravatar Junio C Hamano1-9/+5
In a repository created with git older than f49fb35 (git-init-db: create "pack" subdirectory under objects, 2005-06-27), objects/pack/ directory is not created upon initialization. It was Ok because subdirectories are created as needed inside directories init-db creates, and back then, packfiles were recent invention. After the said commit, new codepaths started relying on the presense of objects/pack/ directory in the repository. This was exacerbated with 8b4eb6b (Do not perform cross-directory renames when creating packs, 2008-09-22) that moved the location temporary pack files are created from objects/ directory to objects/pack/ directory, because moving temporary to the final location was done carefully with lazy leading directory creation. Many packfile related operations in such an old repository can fail mysteriously because of this. This commit introduces two helper functions to make things work better. - odb_mkstemp() is a specialized version of mkstemp() to refactor the code and teach it to create leading directories as needed; - odb_pack_keep() refactors the code to create a ".keep" file while create leading directories as needed. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-10Merge branch 'maint-1.6.0' into maintLibravatar Junio C Hamano1-0/+1
* maint-1.6.0: Clear the delta base cache during fast-import checkpoint
2009-02-10Clear the delta base cache during fast-import checkpointLibravatar Shawn O. Pearce1-0/+1
Otherwise we may reuse the same memory address for a totally different "struct packed_git", and a previously cached object from the prior occupant might be returned when trying to unpack an object from the new pack. Found-by: Daniel Barkalow <barkalow@iabervon.org> Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-13Merge branch 'maint-1.6.0' into maintLibravatar Junio C Hamano1-3/+4
* maint-1.6.0: fast-import: Cleanup mode setting. Git.pm: call Error::Simple() properly
2009-01-13fast-import: Cleanup mode setting.Libravatar Felipe Contreras1-3/+4
"S_IFREG | mode" makes only sense for 0644 and 0755. Even though doing (S_IFREG | mode) may not hurt when mode is any other supported value, that is only true because S_IFREG mode bit happens to be already on for S_IFLNK or S_IFGITLINK. Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Acked-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-21fast-import.c: stricter strtoul check, silence compiler warningLibravatar René Scharfe1-4/+7
Store the return value of strtoul() in order to avoid compiler warnings on Ubuntu 8.10. Also check errno after each call, which is the only way to notice an overflow without making ULONG_MAX an illegal date. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-19Merge branch 'maint' to sync with GIT 1.6.0.6Libravatar Junio C Hamano1-11/+15
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-19fast-import: make tagger information optionalLibravatar Junio C Hamano1-11/+15
Even though newer Porcelain tools always record the tagger information when creating new tags, export/import pair should be able to faithfully reproduce ancient tag objects that lack tagger information. Signed-off-by: Junio C Hamano <gitster@pobox.com> Acked-by: Shawn O. Pearce <spearce@spearce.org>
2008-12-15Merge branch 'maint'Libravatar Junio C Hamano1-1/+3
* maint: fast-import: close pack before unlinking it pager: do not dup2 stderr if it is already redirected git-show: do not segfault when showing a bad tag
2008-12-15fast-import: close pack before unlinking itLibravatar Johannes Schindelin1-1/+3
This is sort of a companion patch to 4723ee9(Close files opened by lock_file() before unlinking.): on Windows, you cannot delete what is still open. This makes test 9300-fast-import pass on Windows for me; quite a few fast-imports leave temporary packs until the test "blank lines not necessary after other commands" actually tests for the number of files in .git/objects/pack/, which has a few temporary packs now. I guess that 8b4eb6b(Do not perform cross-directory renames when creating packs) was "responsible" for the breakage. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-14git-fast-import possible memory corruption problemLibravatar YONETANI Tomokazu1-3/+4
Internal "allocate in bulk, we will never free this memory anyway" allocator used in fast-import had a logic to round up the size of the requested memory block in a wrong place (it computed if the available space is enough to fit the request first, and then carved a chunk of memory by size rounded up to the alignment, which could go beyond the actually available space). Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-02fix openssl headers conflicting with custom SHA1 implementationsLibravatar Nicolas Pitre1-9/+9
On ARM I have the following compilation errors: CC fast-import.o In file included from cache.h:8, from builtin.h:6, from fast-import.c:142: arm/sha1.h:14: error: conflicting types for 'SHA_CTX' /usr/include/openssl/sha.h:105: error: previous declaration of 'SHA_CTX' was here arm/sha1.h:16: error: conflicting types for 'SHA1_Init' /usr/include/openssl/sha.h:115: error: previous declaration of 'SHA1_Init' was here arm/sha1.h:17: error: conflicting types for 'SHA1_Update' /usr/include/openssl/sha.h:116: error: previous declaration of 'SHA1_Update' was here arm/sha1.h:18: error: conflicting types for 'SHA1_Final' /usr/include/openssl/sha.h:117: error: previous declaration of 'SHA1_Final' was here make: *** [fast-import.o] Error 1 This is because openssl header files are always included in git-compat-util.h since commit 684ec6c63c whenever NO_OPENSSL is not set, which somehow brings in <openssl/sha1.h> clashing with the custom ARM version. Compilation of git is probably broken on PPC too for the same reason. Turns out that the only file requiring openssl/ssl.h and openssl/err.h is imap-send.c. But only moving those problematic includes there doesn't solve the issue as it also includes cache.h which brings in the conflicting local SHA1 header file. As suggested by Jeff King, the best solution is to rename our references to SHA1 functions and structure to something git specific, and define those according to the implementation used. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-09-23Merge branch 'maint'Libravatar Junio C Hamano1-2/+2
* maint: builtin-prune.c: prune temporary packs in <object_dir>/pack directory Do not perform cross-directory renames when creating packs
2008-09-22Do not perform cross-directory renames when creating packsLibravatar Petr Baudis1-2/+2
A comment on top of create_tmpfile() describes caveats ('can have problems on various systems (FAT, NFS, Coda)') that should apply in this situation as well. This in the end did not end up solving any of my personal problems, but it might be a useful cleanup patch nevertheless. Signed-off-by: Petr Baudis <pasky@suse.cz> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-02Merge branch 'np/maint-safer-pack'Libravatar Junio C Hamano1-1/+2
* np/maint-safer-pack: fixup_pack_header_footer(): use nicely aligned buffer sizes index-pack: use fixup_pack_header_footer()'s validation mode pack-objects: use fixup_pack_header_footer()'s validation mode improve reliability of fixup_pack_header_footer() pack-objects: improve returned information from write_one()
2008-08-31cast pid_t's to uintmax_t to improve portabilityLibravatar David Soria Parra1-3/+3
Some systems (like e.g. OpenSolaris) define pid_t as long, therefore all our sprintf that use %i/%d cause a compiler warning beacuse of the implicit long->int cast. To make sure that we fit the limits, we display pids as PRIuMAX and cast them explicitly to uintmax_t. Signed-off-by: David Soria Parra <dsp@php.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-29improve reliability of fixup_pack_header_footer()Libravatar Nicolas Pitre1-1/+2
Currently, this function has the potential to read corrupted pack data from disk and give it a valid SHA1 checksum. Let's add the ability to validate SHA1 checksum of existing data along the way, including before and after any arbitrary point in the pack. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-19Support gitlinks in fast-import.Libravatar Alexander Gavrilov1-1/+15
Currently fast-import/export cannot be used for repositories with submodules. This patch extends the relevant programs to make them correctly process gitlinks. Links can be represented by two forms of the Modify command: M 160000 SHA1 some/path which sets the link target explicitly, or M 160000 :mark some/path where the mark refers to a commit. The latter form can be used by importing tools to build all submodules simultaneously in one physical repository, and then simply fetch them apart. Signed-off-by: Alexander Gavrilov <angavrilov@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-13Make usage strings dash-lessLibravatar Stephan Beyer1-1/+1
When you misuse a git command, you are shown the usage string. But this is currently shown in the dashed form. So if you just copy what you see, it will not work, when the dashed form is no longer supported. This patch makes git commands show the dash-less version. For shell scripts that do not specify OPTIONS_SPEC, git-sh-setup.sh generates a dash-less usage string now. Signed-off-by: Stephan Beyer <s-beyer@gmx.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-31Make pack creation always fsync() the resultLibravatar Linus Torvalds1-1/+1
This means that we can depend on packs always being stable on disk, simplifying a lot of the object serialization worries. And unlike loose objects, serializing pack creation IO isn't going to be a performance killer. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-25Merge branch 'js/config-cb'Libravatar Junio C Hamano1-3/+3
* js/config-cb: Provide git_config with a callback-data parameter Conflicts: builtin-add.c builtin-cat-file.c
2008-05-16git-fast-import: rename cmd_*() functions to parse_*()Libravatar Miklos Vajna1-31/+31
There is a cmd_merge() function in fast-import that will conflict with builtin-merge's cmd_merge() function. To keep it consistent, rename all cmd_*() function to parse_*() Signed-off-by: Miklos Vajna <vmiklos@frugalware.org> Acked-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-14Provide git_config with a callback-data parameterLibravatar Johannes Schindelin1-3/+3
git_config() only had a function parameter, but no callback data parameter. This assumes that all callback functions only modify global variables. With this patch, every callback gets a void * parameter, and it is hoped that this will help the libification effort. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-03-16fast-import: Allow "reset" to delete a new branch without errorLibravatar Eyvind Bernhardsen1-0/+2
Creating a branch in fast-import and then resetting it without making any further commits to it currently causes an error message at the end of the import. This error is triggered by cvs2svn's git backend, which uses a temporary fixup branch when it creates tags, because the fixup branch is reset after each tag. This patch prevents the error, allowing "reset" to be used to delete temporary branches. Signed-off-by: Eyvind Bernhardsen <eyvind-git@orakel.ntnu.no> Acked-by: Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-03-08Merge branch 'maint' to sync with 1.5.4.4Libravatar Junio C Hamano1-1/+2
* maint: GIT 1.5.4.4 ident.c: reword error message when the user name cannot be determined Fix dcommit, rebase when rewriteRoot is in use Really make the LF after reset in fast-import optional
2008-03-08Really make the LF after reset in fast-import optionalLibravatar Adeodato Simó1-1/+2
cmd_from() ends with a call to read_next_command(), which is needed when using cmd_from() from commands where from is not the last element. With reset, however, "from" is the last command, after which the flow returns to the main loop, which calls read_next_command() again. Because of this, always set unread_command_buf in cmd_reset_branch(), even if cmd_from() was successful. Add a test case for this in t9300-fast-import.sh. Signed-off-by: Adeodato Simó <dato@net.com.org.es> Acked-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-03-02fast-import: exit with proper message if not a git dirLibravatar Jean-Luc Herren1-0/+1
git fast-import expects to be run from an existing (possibly empty) repository. It was dying with a suboptimal message if that wasn't the case. Signed-off-by: Jean-Luc Herren <jlh@gmx.ch> Acked-by: Shawn O. Pearce <spearce@spearce.org>
2008-02-16Finish current packfile during fast-import crash handlerLibravatar Shawn O. Pearce1-0/+7
If fast-import is in the middle of crashing due to a protocol error or something like that then it can be very useful to have the mark table and all objects up until that point be available for a new import to resume from. Currently we just close the active packfile, unkeep all of our newly created packfiles (so they can be deleted), and dump the marks table to a temporary file. We don't attempt to update the refs/tags that the process has in memory as much of that data can be found in the crash report and I'm not sure it would be the right thing to do under every type of crash. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-16Include the fast-import marks table in crash reportsLibravatar Shawn O. Pearce1-0/+10
If fast-import was not run with --export-marks but we are crashing the frontend application developer may still benefit from having that information available to them. We now include the marks table as part of the crash report if --export-marks was not supplied on the command line. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-16Include annotated tags in fast-import crash reportsLibravatar Shawn O. Pearce1-0/+13
If annotated tags were created they exist in a different namespace within the fast-import process' internal memory tables so we did not export them in the inactive branch table. Now they are written out after the branches, in the order that they were defined by the frontend process. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-15fast-import: check return value from unpack_entry()Libravatar Shawn O. Pearce1-0/+2
If the tree object we have asked for is deltafied in the packfile and the delta did not apply correctly or was not able to be decompressed from the packfile then we can get back NULL instead of the tree data. This is (part of) the reason why read_sha1_file() can return NULL, so we need to also handle it the same way. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-21Document the hairy gfi_unpack_entry part of fast-importLibravatar Shawn O. Pearce1-0/+33
Junio pointed out this part of fast-import wasn't very clear on initial read, and it took some time for someone who was new to fast-import's "dirty little tricks" to understand how this was even working. So a little bit of commentary in the proper place may help future readers. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-21Teach fast-import to honor pack.compression and pack.depthLibravatar Shawn O. Pearce1-3/+29
We now use the configured pack.compression and pack.depth values within fast-import, as like builtin-pack-objects fast-import is generating a packfile for consumption by the Git tools. We use the same behavior as builtin-pack-objects does for these options, allowing core.compression to supply the default value for pack.compression. The default setting for pack.depth within fast-import is still 10 as users will generally repack fast-import generated packfiles by `repack -f`. A large delta depth within the fast-import packfile can significantly slow down such a later repack. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-18fast-import: Don't use a maybe-clobbered errno valueLibravatar Jim Meyering1-3/+6
Without this change, each diagnostic could use an errno value clobbered by the close or unlink in rollback_lock_file. Signed-off-by: Jim Meyering <meyering@redhat.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-17Fix random fast-import errors when compiled with NO_MMAPLibravatar Shawn O. Pearce1-2/+4
fast-import was relying on the fact that on most systems mmap() and write() are synchronized by the filesystem's buffer cache. We were relying on the ability to mmap() 20 bytes beyond the current end of the file, then later fill in those bytes with a future write() call, then read them through the previously obtained mmap() address. This isn't always true with some implementations of NFS, but it is especially not true with our NO_MMAP=YesPlease build time option used on some platforms. If fast-import was built with NO_MMAP=YesPlease we used the malloc()+pread() emulation and the subsequent write() call does not update the trailing 20 bytes of a previously obtained "mmap()" (aka malloc'd) address. Under NO_MMAP that behavior causes unpack_entry() in sha1_file.c to be unable to read an object header (or data) that has been unlucky enough to be written to the packfile at a location such that it is in the trailing 20 bytes of a window previously opened on that same packfile. This bug has gone unnoticed for a very long time as it is highly data dependent. Not only does the object have to be placed at the right position, but it also needs to be positioned behind some other object that has been accessed due to a branch cache invalidation. In other words the stars had to align just right, and if you did run into this bug you probably should also have purchased a lottery ticket. Fortunately the workaround is a lot easier than the bug explanation. Before we allow unpack_entry() to read data from a pack window that has also (possibly) been modified through write() we force all existing windows on that packfile to be closed. By closing the windows we ensure that any new access via the emulated mmap() will reread the packfile, updating to the current file content. This comes at a slight performance degredation as we cannot reuse previously cached windows when we update the packfile. But it is a fairly minor difference as the window closes happen at only two points: - When the packfile is finalized and its .idx is generated: At this stage we are getting ready to update the refs and any data access into the packfile is going to be random, and is going after only the branch tips (to ensure they are valid). Our existing windows (if any) are not likely to be positioned at useful locations to access those final tip commits so we probably were closing them before anyway. - When the branch cache missed and we need to reload: At this point fast-import is getting change commands for the next commit and it needs to go re-read a tree object it previously had written out to the packfile. What windows we had (if any) are not likely to cover the tree in question so we probably were closing them before anyway. We do try to avoid unnecessarily closing windows in the second case by checking to see if the packfile size has increased since the last time we called unpack_entry() on that packfile. If the size has not changed then we have not written additional data, and any existing window is still vaild. This nicely handles the cases where fast-import is going through a branch cache reload and needs to read many trees at once. During such an event we are not likely to be updating the packfile so we do not cycle the windows between reads. With this change in place t9301-fast-export.sh (which was broken by c3b0dec509fe136c5417422f31898b5a4e2d5e02) finally works again. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-17fast-import.c: don't try to commit marks file if write failedLibravatar Brandon Casey1-8/+16
We also move the assignment of -1 to the lock file descriptor up, so that rollback_lock_file() can be called safely after a possible attempt to fclose(). This matches the contents of the 'if' statement just above testing success of fdopen(). Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil> Acked-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-16Improve use of lockfile APILibravatar Brandon Casey1-2/+10
Remove remaining double close(2)'s. i.e. close() before commit_locked_index() or commit_lock_file(). Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-10bundle, fast-import: detect write failureLibravatar Jim Meyering1-2/+3
I noticed some unchecked writes. This fixes them. * bundle.c (create_bundle): Die upon write failure. * fast-import.c (keep_pack): Die upon write or close failure. Signed-off-by: Jim Meyering <meyering@redhat.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-02Update callers of check_ref_format()Libravatar Junio C Hamano1-2/+3
This updates send-pack and fast-import to use symbolic constants for checking the return values from check_ref_format(), and also futureproof the logic in lock_any_ref_for_update() to explicitly name the case that is usually considered an error but is Ok for this particular use. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-14fast-import: fix unalinged allocation and accessLibravatar David S. Miller1-5/+5
The specialized pool allocator fast-import uses aligned objects on the size of a pointer, which was not sufficient at least on Sparc. Instead, make the alignment for objects of type unitmax_t. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-14Merge branch 'maint'Libravatar Junio C Hamano1-7/+13
* maint: git-clean: honor core.excludesfile Documentation: Fix man page breakage with DocBook XSL v1.72 git-remote.txt: fix typo core-tutorial.txt: Fix argument mistake in an example. replace reference to git-rm with git-reset in git-commit doc Grammar fixes for gitattributes documentation Don't allow fast-import tree delta chains to exceed maximum depth revert/cherry-pick: allow starting from dirty work tree. t/t3404: fix test for a bogus todo file. Conflicts: fast-import.c
2007-11-13Don't allow fast-import tree delta chains to exceed maximum depthLibravatar Shawn O. Pearce1-7/+13
Brian Downing noticed fast-import can produce tree depths of up to 6,035 objects and even deeper. Long delta chains can create very small packfiles but cause problems during repacking as git needs to unpack each tree to count the reachable blobs. What's happening here is the active branch cache isn't big enough. We're swapping out the branch and thus recycling the tree information (struct tree_content) back into the free pool. When we later reload the tree we set the delta_depth to 0 but we kept the tree we just reloaded as a delta base. So if the tree we reloaded was already at the maximum depth we wouldn't know it and make the new tree a delta. Multiply the number of times the branch cache has to swap out the tree times max_depth (10) and you get the maximum delta depth of a tree created by fast-import. In Brian's case above the active branch cache had to swap the branch out 603/604 times during this import to produce a tree with a delta depth of 6035. Acked-by: Brian Downing <bdowning@lavos.net> Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-10-26fast-import.c: fix regression due to strbuf conversionLibravatar Pierre Habouzit1-0/+1
Without this strbuf_detach(), it yields a double free later, the command is in fact stashed, and this is not a memory leak. Signed-off-by: Pierre Habouzit <madcoder@debian.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-10-21Merge branch 'maint'Libravatar Shawn O. Pearce1-1/+1
* maint: Describe more 1.5.3.5 fixes in release notes Fix diffcore-break total breakage Fix directory scanner to correctly ignore files without d_type Improve receive-pack error message about funny ref creation fast-import: Fix argument order to die in file_change_m git-gui: Don't display CR within console windows git-gui: Handle progress bars from newer gits git-gui: Correctly report failures from git-write-tree gitk.txt: Fix markup. send-pack: respect '+' on wildcard refspecs git-gui: accept versions containing text annotations, like 1.5.3.mingw.1 git-gui: Don't crash when starting gitk from a browser session git-gui: Allow gitk to be started on Cygwin with native Tcl/Tk git-gui: Ensure .git/info/exclude is honored in Cygwin workdirs git-gui: Handle starting on mapped shares under Cygwin git-gui: Display message box when we cannot find git in $PATH git-gui: Avoid using bold text in entire gui for some fonts
2007-10-20fast-import: Fix argument order to die in file_change_mLibravatar Julian Phillips1-1/+1
The arguments to the "Not a blob" die call in file_change_m were transposed, so that the command was printed as the type, and the type as the command. Switch them around so that the error message comes out correctly. Signed-off-by: Julian Phillips <julian@quantumfyre.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2007-09-29strbuf change: be sure ->buf is never ever NULL.Libravatar Pierre Habouzit1-1/+1
For that purpose, the ->buf is always initialized with a char * buf living in the strbuf module. It is made a char * so that we can sloppily accept things that perform: sb->buf[0] = '\0', and because you can't pass "" as an initializer for ->buf without making gcc unhappy for very good reasons. strbuf_init/_detach/_grow have been fixed to trust ->alloc and not ->buf anymore. as a consequence strbuf_detach is _mandatory_ to detach a buffer, copying ->buf isn't an option anymore, if ->buf is going to escape from the scope, and eventually be free'd. API changes: * strbuf_setlen now always works, so just make strbuf_reset a convenience macro. * strbuf_detatch takes a size_t* optional argument (meaning it can be NULL) to copy the buffer's len, as it was needed for this refactor to make the code more readable, and working like the callers. Signed-off-by: Pierre Habouzit <madcoder@debian.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-09-20Rework unquote_c_style to work on a strbuf.Libravatar Pierre Habouzit1-25/+22
If the gain is not obvious in the diffstat, the resulting code is more readable, _and_ in checkout-index/update-index we now reuse the same buffer to unquote strings instead of always freeing/mallocing. This also is more coherent with the next patch that reworks quoting functions. The quoting function is also made more efficient scanning for backslashes and treating portions of strings without a backslash at once. Signed-off-by: Pierre Habouzit <madcoder@debian.org>
2007-09-20strbuf API additions and enhancements.Libravatar Pierre Habouzit1-3/+1
Add strbuf_remove, change strbuf_insert: As both are special cases of strbuf_splice, implement them as such. gcc is able to do the math and generate almost optimal code this way. Add strbuf_swap: Exchange the values of its arguments. Use it in fast-import.c Also fix spacing issues in strbuf.h Signed-off-by: Pierre Habouzit <madcoder@debian.org>
2007-09-18Use xmemdupz() in many places.Libravatar Pierre Habouzit1-3/+1
Signed-off-by: Pierre Habouzit <madcoder@debian.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>