In a later patch we want to buffer all output before emitting it as a
new feature ("markup moved lines") conceptually cannot be implemented
in a single pass over the output.
There are different approaches to buffer all output such as:
* Buffering on the char level, i.e. we'd have a char[] which would
grow at approximately 80 characters a line. This would keep the
output completely unstructured, but might be very easy to implement,
such as redirecting all output to a temporary file and working off
that. The later passes over the buffer are quite complicated though,
because we have to parse back any output and then decide if it should
be modified.
* Buffer on a line level. As the output is mostly line oriented already,
this would make sense, but it still is a bit awkward as we'd have to
make sense of it again by looking at the first characters of a line
to decide what part of a diff a line is.
* Buffer semantically. Imagine there is a formal grammar for the diff
output and we'd keep the symbols of this grammar around. This keeps
the highest level of structure in the buffered data, such that the
actual memory requirements are less than say the first option. Instead
of buffering the characters of the line, we'll buffer what we intend
to do plus additional information for the specifics. An output of
diff --git a/new.txt b/new.txt
index fa69b07..412428c 100644
Binary files a/new.txt and b/new.txt differ
could be buffered as
DIFF_SYMBOL_DIFF_START + new.txt
DIFF_SYMBOL_INDEX_MODE + fa69b07 412428c "non-executable" flag
DIFF_SYMBOL_BINARY_FILES + new.txt
This and the following patches introduce the third option of buffering
by first moving any output to emit_diff_symbol, and then introducing the
buffering in this function.
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In a later patch we want to do more things before and after all filepairs
are flushed. So factor flushing out all file pairs into its own function
that the new code can be plugged in easily.
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The emit_hunk_header() function is responsible for assembling a
hunk header and calling emit_line() to send the hunk header
to the output file. Its only caller fn_out_consume() needs
to prepare for a case where the function emits an incomplete
line and add the terminating LF.
Instead make sure emit_hunk_header() to always send a
completed line to emit_line().
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We already have dereferenced 'p->two' into a local variable 'two'.
Use that.
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* sb/hashmap-customize-comparison: (566 commits)
hashmap: migrate documentation from Documentation/technical into header
patch-ids.c: use hashmap correctly
hashmap.h: compare function has access to a data field
Twelfth batch for 2.14
Git 2.13.2
Eleventh batch for 2.14
Revert "split-index: add and use unshare_split_index()"
Tenth batch for 2.14
add--interactive: quote commentChar regex
add--interactive: handle EOF in prompt_yesno
auto-correct: tweak phrasing
docs: update 64-bit core.packedGitLimit default
t7508: fix a broken indentation
grep: fix erroneously copy/pasted variable in check/assert pattern
Ninth batch for 2.14
glossary: define 'stash entry'
status: add optional stash count information
stash: update documentation to use 'stash entry'
for_each_bisect_ref(): don't trim refnames
mergetools/meld: improve compatibiilty with Meld on macOS X
...
While at it, clarify the use of `key`, `keydata`, `entry_or_key` as well
as documenting the new data pointer for the compare function.
Rework the example.
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
As alluded to in the previous patch, the code in patch-ids.c is
using the hashmaps API wrong.
Luckily we do not have a bug, as all hashmap functionality that we use
here (hashmap_get) passes through the keydata. If hashmap_get_next were
to be used, a bug would occur as that passes NULL for the key_data.
So instead use the hashmap API correctly and provide the caller required
data in the compare function via the first argument that always gets
passed and was setup via the hashmap_init function.
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When using the hashmap a common need is to have access to caller provided
data in the compare function. A couple of times we abuse the keydata field
to pass in the data needed. This happens for example in patch-ids.c.
This patch changes the function signature of the compare function
to have one more void pointer available. The pointer given for each
invocation of the compare function must be defined in the init function
of the hashmap and is just passed through.
Documentation of this new feature is deferred to a later patch.
This is a rather mechanical conversion, just adding the new pass-through
parameter. However while at it improve the naming of the fields of all
compare functions used by hashmaps by ensuring unused parameters are
prefixed with 'unused_' and naming the parameters what they are (instead
of 'unused' make it 'unused_keydata').
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git add -p" were updated in 2.12 timeframe to cope with custom
core.commentchar but the implementation was buggy and a
metacharacter like $ and * did not work.
* jk/add-p-commentchar-fix:
add--interactive: quote commentChar regex
add--interactive: handle EOF in prompt_yesno
Bugfix for a topic that is (only) in 'master'.
* mh/packed-ref-store-prep:
for_each_bisect_ref(): don't trim refnames
lock_packed_refs(): fix cache validity check
"git status" learned to optionally give how many stash entries the
user has in its output.
* lb/status-stash-count:
glossary: define 'stash entry'
status: add optional stash count information
stash: update documentation to use 'stash entry'
Code clean-up.
* sg/revision-parser-skip-prefix:
revision.c: use skip_prefix() in handle_revision_pseudo_opt()
revision.c: use skip_prefix() in handle_revision_opt()
revision.c: stricter parsing of '--early-output'
revision.c: stricter parsing of '--no-{min,max}-parents'
revision.h: turn rev_info.early_output back into an unsigned int
"git stash push <pathspec>" did not work from a subdirectory at all.
Bugfix for a topic in v2.13
* ps/stash-push-pathspec-fix:
git-stash: fix pushing stash with pathspec from subdir
The result from "git diff" that compares two blobs, e.g. "git diff
$commit1:$path $commit2:$path", used to be shown with the full
object name as given on the command line, but it is more natural to
use the $path in the output and use it to look up .gitattributes.
* jk/diff-blob:
diff: use blob path for blob/file diffs
diff: use pending "path" if it is available
diff: use the word "path" instead of "name" for blobs
diff: pass whole pending entry in blobinfo
handle_revision_arg: record paths for pending objects
handle_revision_arg: record modes for "a..b" endpoints
t4063: add tests of direct blob diffs
get_sha1_with_context: dynamically allocate oc->path
get_sha1_with_context: always initialize oc->symlink_path
sha1_name: consistently refer to object_context as "oc"
handle_revision_arg: add handle_dotdot() helper
handle_revision_arg: hoist ".." check out of range parsing
handle_revision_arg: stop using "dotdot" as a generic pointer
handle_revision_arg: simplify commit reference lookups
handle_revision_arg: reset "dotdot" consistently
"git describe --contains" penalized light-weight tags so much that
they were almost never considered. Instead, give them about the
same chance to be considered as an annotated tag that is the same
age as the underlying commit would.
* jc/name-rev-lw-tag:
name-rev: favor describing with tags and use committer date to tiebreak
name-rev: refactor logic to see if a new candidate is a better name
A common pattern to free a piece of memory and assign NULL to the
pointer that used to point at it has been replaced with a new
FREE_AND_NULL() macro.
* ab/free-and-null:
*.[ch] refactoring: make use of the FREE_AND_NULL() macro
coccinelle: make use of the "expression" FREE_AND_NULL() rule
coccinelle: add a rule to make "expression" code use FREE_AND_NULL()
coccinelle: make use of the "type" FREE_AND_NULL() rule
coccinelle: add a rule to make "type" code use FREE_AND_NULL()
git-compat-util: add a FREE_AND_NULL() wrapper around free(ptr); ptr = NULL
Using "git add d/i/r" when d/i/r is the top of the working tree of
a separate repository would create a gitlink in the index, which
would appear as a not-quite-initialized submodule to others. We
learned to give warnings when this happens.
* jk/warn-add-gitlink:
t: move "git add submodule" into test blocks
add: warn when adding an embedded repository
Fix configuration codepath to pay proper attention to commondir
that is used in multi-worktree situation, and isolate config API
into its own header file.
* bw/config-h:
config: don't implicitly use gitdir or commondir
config: respect commondir
setup: teach discover_git_directory to respect the commondir
config: don't include config.h by default
config: remove git_config_iter
config: create config.h
Code clean-up.
* bw/ls-files-sans-the-index:
ls-files: factor out tag calculation
ls-files: factor out debug info into a function
ls-files: convert show_files to take an index
ls-files: convert show_ce_entry to take an index
ls-files: convert prune_cache to take an index
ls-files: convert ce_excluded to take an index
ls-files: convert show_ru_info to take an index
ls-files: convert show_other_files to take an index
ls-files: convert show_killed_files to take an index
ls-files: convert write_eolinfo to take an index
ls-files: convert overlay_tree_on_cache to take an index
tree: convert read_tree to take an index parameter
convert: convert renormalize_buffer to take an index
convert: convert convert_to_git to take an index
convert: convert convert_to_git_filter_fd to take an index
convert: convert crlf_to_git to take an index
convert: convert get_cached_convert_stats_ascii to take an index
The code to pick up and execute command alias definition from the
configuration used to switch to the top of the working tree and
then come back when the expanded alias was executed, which was
unnecessarilyl complex. Attempt to simplify the logic by using the
early-config mechanism that does not chdir around.
* js/alias-early-config:
alias: use the early config machinery to expand aliases
t7006: demonstrate a problem with aliases in subdirectories
t1308: relax the test verifying that empty alias values are disallowed
help: use early config when autocorrecting aliases
config: report correct line number upon error
discover_git_directory(): avoid setting invalid git_dir
The pretty-format specifiers like '%h', '%t', etc. had an
optimization that no longer works correctly. In preparation/hope
of getting it correctly implemented, first discard the optimization
that is broken.
* rs/pretty-add-again:
pretty: recalculate duplicate short hashes
The 'diff-highlight' program (in contrib/) has been restructured
for easier reuse by an external project 'diff-so-fancy'.
* jk/diff-highlight-module:
diff-highlight: split code into module
An example in documentation that does not work in multi worktree
configuration has been corrected.
* ah/doc-gitattributes-empty-index:
doc: do not use `rm .git/index` when normalizing line endings
A new test to show the interaction between the pattern [^a-z]
(which matches '/') and a slash in a path has been added. The
pattern should not match the slash with "pathmatch", but should
with "wildmatch".
* ab/wildmatch-glob-slash-test:
wildmatch test: cover a blind spot in "/" matching
"git mergetool" learned to work around a wrapper MacOS X adds
around underlying meld.
* da/mergetools-meld-output-opt-on-macos:
mergetools/meld: improve compatibiilty with Meld on macOS X
As there is no portable way to pass timezone information to
strftime, some output format from "git log" and friends are
impossible to produce. Teach our own strbuf_addftime to replace %z
and %Z with caller-supplied values to help working around this.
* rs/strbuf-addftime-zZ:
date: use localtime() for "-local" time formats
t0006: check --date=format zone offsets
strbuf: let strbuf_addftime handle %z and %Z itself
