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| author |  ZheNing Hu <adlternative@gmail.com> | 2021-07-26 03:26:47 +0000 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2021-07-26 12:01:25 -0700 |
| commit | bd0708c7eb8be43242180a1ea2a0f0acda7a4fbc (patch) | |
| tree | 4c3f6483f77bff5440e2bca075459b594eaf0a71 /Documentation/git-for-each-ref.txt | |
| parent | ref-filter: add obj-type check in grab contents (diff) | |
| download | tgif-bd0708c7eb8be43242180a1ea2a0f0acda7a4fbc.tar.xz | |
ref-filter: add %(raw) atom
Add new formatting option `%(raw)`, which will print the raw
object data without any changes. It will help further to migrate
all cat-file formatting logic from cat-file to ref-filter.
The raw data of blob, tree objects may contain '\0', but most of
the logic in `ref-filter` depends on the output of the atom being
text (specifically, no embedded NULs in it).
E.g. `quote_formatting()` use `strbuf_addstr()` or `*._quote_buf()`
add the data to the buffer. The raw data of a tree object is
`100644 one\0...`, only the `100644 one` will be added to the buffer,
which is incorrect.
Therefore, we need to find a way to record the length of the
atom_value's member `s`. Although strbuf can already record the
string and its length, if we want to replace the type of atom_value's
member `s` with strbuf, many places in ref-filter that are filled
with dynamically allocated mermory in `v->s` are not easy to replace.
At the same time, we need to check if `v->s == NULL` in
populate_value(), and strbuf cannot easily distinguish NULL and empty
strings, but c-style "const char *" can do it. So add a new member in
`struct atom_value`: `s_size`, which can record raw object size, it
can help us add raw object data to the buffer or compare two buffers
which contain raw object data.
Note that `--format=%(raw)` cannot be used with `--python`, `--shell`,
`--tcl`, and `--perl` because if the binary raw data is passed to a
variable in such languages, these may not support arbitrary binary data
in their string variable type.
Reviewed-by: Jacob Keller <jacob.keller@gmail.com>
Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Hariom Verma <hariom18599@gmail.com>
Helped-by: Bagas Sanjaya <bagasdotme@gmail.com>
Helped-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Helped-by: Felipe Contreras <felipe.contreras@gmail.com>
Helped-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Helped-by: Junio C Hamano <gitster@pobox.com>
Based-on-patch-by: Olga Telezhnaya <olyatelezhnaya@gmail.com>
Signed-off-by: ZheNing Hu <adlternative@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'Documentation/git-for-each-ref.txt')
| -rw-r--r-- | Documentation/git-for-each-ref.txt | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/git-for-each-ref.txt b/Documentation/git-for-each-ref.txt index 2ae2478de7..cbb6f87d13 100644 --- a/Documentation/git-for-each-ref.txt +++ b/Documentation/git-for-each-ref.txt @@ -235,6 +235,15 @@ and `date` to extract the named component. For email fields (`authoremail`, without angle brackets, and `:localpart` to get the part before the `@` symbol out of the trimmed email. +The raw data in an object is `raw`. + +raw:size:: + The raw data size of the object. + +Note that `--format=%(raw)` can not be used with `--python`, `--shell`, `--tcl`, +`--perl` because such language may not support arbitrary binary data in their +string variable type. + The message in a commit or a tag object is `contents`, from which `contents:<part>` can be used to extract various parts out of: |