Create a function that, taking a string, describes the position of its
trailer block (if available) and the contents thereof, and make trailer
use it. This makes it easier for other Git components, in the future, to
interpret trailer blocks in the same way as trailer.
In a subsequent patch, another component will be made to use this.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
trailer.c currently splits lines while processing a buffer (and also
rejoins lines when needing to invoke ignore_non_trailer).
Avoid such line splitting, except when generating the strings
corresponding to trailers (for ease of use by clients - a subsequent
patch will allow other components to obtain the layout of a trailer
block in a buffer, including the trailers themselves). The main purpose
of this is to make it easy to return pointers into the original buffer
(for a subsequent patch), but this also significantly reduces the number
of memory allocations required.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Make ignore_non_trailer take a buf/len pair instead of struct strbuf.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Currently, a line is interpreted to be a trailer line if it contains a
separator. Make parsing stricter by requiring the text on the left of
the separator, if not the empty string, to be of the "<token><optional
whitespace>" form.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Update "interpret-trailers" machinery and teaches it that people in
real world write all sorts of crufts in the "trailer" that was
originally designed to have the neat-o "Mail-Header: like thing"
and nothing else.
* jt/trailer-with-cruft:
trailer: support values folded to multiple lines
trailer: forbid leading whitespace in trailers
trailer: allow non-trailers in trailer block
trailer: clarify failure modes in parse_trailer
trailer: make args have their own struct
trailer: streamline trailer item create and add
trailer: use list.h for doubly-linked list
trailer: improve const correctness
Currently, interpret-trailers requires that a trailer be only on 1 line.
For example:
a: first line
second line
would be interpreted as one trailer line followed by one non-trailer line.
Make interpret-trailers support RFC 822-style folding, treating those
lines as one logical trailer.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Currently, interpret-trailers allows leading whitespace in trailer
lines. This leads to false positives, especially for quoted lines or
bullet lists.
Forbid leading whitespace in trailers.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Currently, interpret-trailers requires all lines of a trailer block to
be trailers (or comments) - if not it would not identify that block as a
trailer block, and thus create its own trailer block, inserting a blank
line. For example:
echo -e "\nSigned-off-by: x\nnot trailer" |
git interpret-trailers --trailer "c: d"
would result in:
Signed-off-by: x
not trailer
c: d
Relax the definition of a trailer block to require that the trailers (i)
are all trailers, or (ii) contain at least one Git-generated trailer and
consists of at least 25% trailers.
Signed-off-by: x
not trailer
c: d
(i) is the existing functionality. (ii) allows arbitrary lines to be
included in trailer blocks, like those in [1], and still allow
interpret-trailers to be used.
[1]
e7d316a02f
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The parse_trailer function has a few modes of operation, all depending
on whether the separator is present in its input, and if yes, the
separator's position. Some of these modes are failure modes, and these
failure modes are handled differently depending on whether the trailer
line was sourced from a file or from a command-line argument.
Extract a function to find the separator, allowing the invokers of
parse_trailer to determine how to handle the failure modes instead of
making parse_trailer do it. In this function, also take in the list of
separators, so that we can distinguish between command line arguments
(which allow '=' as separator) and file input (which does not allow '='
as separator).
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Improve type safety by making arguments (whether from configuration or
from the command line) have their own "struct arg_item" type, separate
from the "struct trailer_item" type used to represent the trailers in
the buffer being manipulated.
This change also prepares "struct trailer_item" to be further
differentiated from "struct arg_item" in future patches.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Currently, creation and addition (to a list) of trailer items are spread
across multiple functions. Streamline this by only having 2 functions:
one to parse the user-supplied string, and one to add the parsed
information to a list.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Replace the existing handwritten implementation of a doubly-linked list
in trailer.c with the functions and macros from list.h. This
significantly simplifies the code.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Change "const char *" to "char *" in struct trailer_item and in the
return value of apply_command (since those strings are owned strings).
Change "struct conf_info *" to "const struct conf_info *" (since that
struct is not modified).
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
d64ea0f83b ("git-compat-util: add xstrdup_or_null helper",
2015-01-12) added a handy wrapper that allows us to get a duplicate
of a string or NULL if the original is NULL, but a handful of
codepath predate its introduction or just weren't aware of it.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The vast majority of error messages in Git's source code which report a
bug use the convention to prefix the message with "BUG:".
As part of cleaning up merge-recursive to stop die()ing except in case of
detected bugs, let's just make the remainder of the bug reports consistent
with the de facto rule.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add a command line option --in-place to support in-place editing akin to
sed -i. This allows to write commands like the following:
git interpret-trailers --trailer "X: Y" a.txt > b.txt && mv b.txt a.txt
in a more concise way:
git interpret-trailers --trailer "X: Y" --in-place a.txt
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Use fprintf instead of printf in trailer.c in order to allow printing
to a file other than stdout. This will be needed to support in-place
editing in git interpret-trailers.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The "interpret-trailers" helper mistook a multi-paragraph title of
a commit log message with a colon in it as the end of the trailer
block.
* cc/trailers-corner-case-fix:
trailer: support multiline title
We currently ignore the first line passed to `git interpret-trailers`,
when looking for the beginning of the trailers.
Unfortunately this does not work well when a commit is created with a
line break in the title, using for example the following command:
git commit -m 'place of
code: change we made'
That's why instead of ignoring only the first line, it is better to
ignore the first paragraph.
Signed-off-by: Christian Couder <christian.couder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"interpret-trailers" helper mistook a single-liner log message that
has a colon as the end of existing trailer.
* cc/trailers-corner-case-fix:
trailer: retitle a test and correct an in-comment message
trailer: ignore first line of message
When looking for the start of the trailers in the message
we are passed, we should ignore the first line of the message.
The reason is that if we are passed a patch or commit message
then the first line should be the patch title.
If we are passed only trailers we can expect that they start
with an empty line that can be ignored too.
This way we can properly process commit messages that have
only one line with something that looks like a trailer, for
example like "area of code: change we made".
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When we read from a trailer.*.command sub-program, the
current code uses run_command followed by a pipe read, which
can result in deadlock (though in practice you would have to
have a large trailer for this to be a problem). The current
code also leaks the file descriptor for the pipe to the
sub-command.
Instead, let's use capture_command, which makes this simpler
(and we can get rid of our custom helper).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A few files include the same header file directly more than once.
As all these headers protect themselves against repeated inclusion
by the "#ifndef FOO_H / #define FOO_H / ... / #endif" idiom, leave
only the first inclusion and remove the later inclusion as a no-op
clean-up.
Signed-off-by: Дилян Палаузов <git-dpa@aegee.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git interpret-trailers" learned to properly handle the
"Conflicts:" block at the end.
* cc/interpret-trailers-more:
trailer: add test with an old style conflict block
trailer: reuse ignore_non_trailer() to ignore conflict lines
commit: make ignore_non_trailer() non static
merge & sequencer: turn "Conflicts:" hint into a comment
builtin/commit.c: extract ignore_non_trailer() helper function
merge & sequencer: unify codepaths that write "Conflicts:" hint
builtin/merge.c: drop a parameter that is never used
Small fixes to a new experimental command already in 'master'.
* cc/interpret-trailers:
trailer: display a trailer without its trailing newline
trailer: ignore comment lines inside the trailers
Initialize the struct child_process variable cp at declaration time.
This is shorter, saves a function call and prevents using the variable
before initialization by mistake.
Suggested-by: Jeff King <peff@peff.net>
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Make sure we look for trailers before any conflict line
by reusing the ignore_non_trailer() function.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Trailers passed to the parse_trailer() function often have
a trailing newline. When erroring out, we should display
the invalid trailer properly, that means without any
trailing newline.
Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Otherwise trailers that are commented out might be
processed. We would also error out if the comment line
char is also a separator.
This means that comments inside a trailer block will
disappear, but that was already the case anyway.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Call child_process_init() instead of zeroing the memory of variables of
type struct child_process by hand before use because the former is both
clearer and shorter.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Let the user specify a command that will give on its standard output
the value to use for the specified trailer.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This patch adds the process_trailers() function that
calls all the previously added processing functions
and then prints the results on the standard output.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Read trailers from a file or from stdin, parse the trailers and then
put the result into a doubly linked list.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Parse the trailer command line arguments and put
the result into an arg_tok doubly linked list.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Read the configuration to get trailer information, and then process
it and store it in a doubly linked list.
The config information is stored in the list whose first item is
pointed to by:
static struct trailer_item *first_conf_item;
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Implement the logic to process trailers from the input message
and from arguments.
At the beginning trailers from the input message are in their
own "in_tok" doubly linked list, and trailers from arguments
are in their own "arg_tok" doubly linked list.
The lists are traversed and when an "arg_tok" should be "applied",
it is removed from its list and inserted into the "in_tok" list.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We will use a doubly linked list to store all information
about trailers and their configuration.
This way we can easily remove or add trailers to or from
trailer lists while traversing the lists in either direction.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
