Commit Graph

82 Commits

Author SHA1 Message Date
Jeff King
a469a10193 silence some -Wuninitialized false positives
There are a few error functions that simply wrap error() and
provide a standardized message text. Like error(), they
always return -1; knowing that can help the compiler silence
some false positive -Wuninitialized warnings.

One strategy would be to just declare these as inline in the
header file so that the compiler can see that they always
return -1. However, gcc does not always inline them (e.g.,
it will not inline opterror, even with -O3), which renders
our change pointless.

Instead, let's follow the same route we did with error() in
the last patch, and define a macro that makes the constant
return value obvious to the compiler.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-15 10:45:59 -08:00
Torsten Bögershausen
76759c7dff git on Mac OS and precomposed unicode
Mac OS X mangles file names containing unicode on file systems HFS+,
VFAT or SAMBA.  When a file using unicode code points outside ASCII
is created on a HFS+ drive, the file name is converted into
decomposed unicode and written to disk. No conversion is done if
the file name is already decomposed unicode.

Calling open("\xc3\x84", ...) with a precomposed "Ä" yields the same
result as open("\x41\xcc\x88",...) with a decomposed "Ä".

As a consequence, readdir() returns the file names in decomposed
unicode, even if the user expects precomposed unicode.  Unlike on
HFS+, Mac OS X stores files on a VFAT drive (e.g. an USB drive) in
precomposed unicode, but readdir() still returns file names in
decomposed unicode.  When a git repository is stored on a network
share using SAMBA, file names are send over the wire and written to
disk on the remote system in precomposed unicode, but Mac OS X
readdir() returns decomposed unicode to be compatible with its
behaviour on HFS+ and VFAT.

The unicode decomposition causes many problems:

- The names "git add" and other commands get from the end user may
  often be precomposed form (the decomposed form is not easily input
  from the keyboard), but when the commands read from the filesystem
  to see what it is going to update the index with already is on the
  filesystem, readdir() will give decomposed form, which is different.

- Similarly "git log", "git mv" and all other commands that need to
  compare pathnames found on the command line (often but not always
  precomposed form; a command line input resulting from globbing may
  be in decomposed) with pathnames found in the tree objects (should
  be precomposed form to be compatible with other systems and for
  consistency in general).

- The same for names stored in the index, which should be
  precomposed, that may need to be compared with the names read from
  readdir().

NFS mounted from Linux is fully transparent and does not suffer from
the above.

As Mac OS X treats precomposed and decomposed file names as equal,
we can

 - wrap readdir() on Mac OS X to return the precomposed form, and

 - normalize decomposed form given from the command line also to the
   precomposed form,

to ensure that all pathnames used in Git are always in the
precomposed form.  This behaviour can be requested by setting
"core.precomposedunicode" configuration variable to true.

The code in compat/precomposed_utf8.c implements basically 4 new
functions: precomposed_utf8_opendir(), precomposed_utf8_readdir(),
precomposed_utf8_closedir() and precompose_argv().  The first three
are to wrap opendir(3), readdir(3), and closedir(3) functions.

The argv[] conversion allows to use the TAB filename completion done
by the shell on command line.  It tolerates other tools which use
readdir() to feed decomposed file names into git.

When creating a new git repository with "git init" or "git clone",
"core.precomposedunicode" will be set "false".

The user needs to activate this feature manually.  She typically
sets core.precomposedunicode to "true" on HFS and VFAT, or file
systems mounted via SAMBA.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Torsten Bögershausen <tboegi@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-07-08 22:03:46 -07:00
Nguyễn Thái Ngọc Duy
54e6dc7daf i18n: parseopt: lookup help and argument translations when showing usage
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-05-08 10:46:13 -07:00
René Scharfe
38916c5b47 parse-options: typo check for unknown switches
The user specifies a long option but forgets to type the second
leading dash, we currently detect and report that fact if its first
letter is a valid short option. This is done for safety, to avoid
ambiguity between short options (and their arguments) and a long
option with a missing dash.

This diagnostic message is also helpful for long options whose first
letter is not a valid short option, however. Print it in that case,
too, as a courtesy.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-03-04 18:28:59 -08:00
René Scharfe
cbb08c2e0b parse-options: remove PARSE_OPT_NEGHELP
PARSE_OPT_NEGHELP is confusing because short options defined with that
flag do the opposite of what the helptext says. It is also not needed
anymore now that options starting with no- can be negated by removing
that prefix. Convert its only two users to OPT_NEGBIT() and OPT_BOOL()
and then remove support for PARSE_OPT_NEGHELP.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-28 11:48:11 -08:00
René Scharfe
0f1930c587 parse-options: allow positivation of options starting, with no-
Long options can be negated by adding no- right after the leading
two dashes. This is useful e.g. to override options set by aliases.

For options that are defined to start with no- already, this looks
a bit funny. Allow such options to also be negated by removing the
prefix.

The following thirteen options are affected:

	apply          --no-add
	bisect--helper --no-checkout
	checkout-index --no-create
	clone          --no-checkout --no-hardlinks
	commit         --no-verify   --no-post-rewrite
	format-patch   --no-binary
	hash-object    --no-filters
	read-tree      --no-sparse-checkout
	revert         --no-commit
	show-branch    --no-name
	update-ref     --no-deref

The following five are NOT affected because they are defined with
PARSE_OPT_NONEG or the non-negated version is defined as well:

	branch       --no-merged
	format-patch --no-stat             --no-numbered
	update-index --no-assume-unchanged --no-skip-worktree

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-26 15:32:53 -08:00
Junio C Hamano
b04ba2bb42 parse-options: deprecate OPT_BOOLEAN
It is natural to expect that an option defined with OPT_BOOLEAN() could be
used in this way:

	int option = -1; /* unspecified */

	struct option options[] = {
		OPT_BOOLEAN(0, "option", &option, "set option"),
                OPT_END()
	};
	parse_options(ac, av, prefix, options, usage, 0);

        if (option < 0)
        	... do the default thing ...
	else if (!option)
		... --no-option was given ...
	else
		... --option was given ...

to easily tell three cases apart:

 - There is no mention of the `--option` on the command line;
 - The variable is positively set with `--option`; or
 - The variable is explicitly negated with `--no-option`.

Unfortunately, this is not the case. OPT_BOOLEAN() increments the variable
every time `--option` is given, and resets it to zero when `--no-option`
is given.

As a first step to remedy this, introduce a true boolean OPT_BOOL(), and
rename OPT_BOOLEAN() to OPT_COUNTUP(). To help transitioning, OPT_BOOLEAN
and OPTION_BOOLEAN are defined as deprecated synonyms to OPT_COUNTUP and
OPTION_COUNTUP respectively.

This is what db7244b (parse-options new features., 2007-11-07) from four
years ago started by marking OPTION_BOOLEAN as "INCR would have been a
better name".

Some existing users do depend on the count-up semantics; for example,
users of OPT__VERBOSE() could use it to raise the verbosity level with
repeated use of `-v` on the command line, but they probably should be
rewritten to use OPT__VERBOSITY() instead these days.  I suspect that some
users of OPT__FORCE() may also use it to implement different level of
forcibleness but I didn't check.

On top of this patch, here are the remaining clean-up tasks that other
people can help:

 - Look at each hit in "git grep -e OPT_BOOLEAN"; trace all uses of the
   value that is set to the underlying variable, and if it can proven that
   the variable is only used as a boolean, replace it with OPT_BOOL(). If
   the caller does depend on the count-up semantics, replace it with
   OPT_COUNTUP() instead.

 - Same for OPTION_BOOLEAN; replace it with OPTION_SET_INT and arrange to
   set 1 to the variable for a true boolean, and otherwise replace it with
   OPTION_COUNTUP.

 - Look at each hit in "git grep -e OPT__VERBOSE -e OPT__QUIET" and see if
   they can be replaced with OPT__VERBOSITY().

I'll follow this message up with a separate patch as an example.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-09-27 17:00:04 -07:00
Dmitry Ivankov
0687628466 Reduce parse-options.o dependencies
Currently parse-options.o pulls quite a big bunch of dependencies.
his complicates it's usage in contrib/ because it pulls external
dependencies and it also increases executables size.

Split off less generic and more internal to git part of
parse-options.c to parse-options-cb.c.

Move prefix_filename function from setup.c to abspath.c. abspath.o
and wrapper.o pull each other, so it's unlikely to increase the
dependencies. It was a dependency of parse-options.o that pulled
many others.

Now parse-options.o pulls just abspath.o, ctype.o, strbuf.o, usage.o,
wrapper.o, libc directly and strlcpy.o indirectly.

Signed-off-by: Dmitry Ivankov <divanorama@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-11 12:18:02 -07:00
Dmitry Ivankov
1f275b7c4c parse-options: export opterr, optbug
opterror and optbug functions are used by some of parsing routines
in parse-options.c to report errors and bugs respectively.

Export these functions to allow more custom parsing routines to use
them in a uniform way.

Signed-off-by: Dmitry Ivankov <divanorama@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-11 12:18:02 -07:00
Jeff King
c8ba163916 parse-options: add OPT_STRING_LIST helper
This just adds repeated invocations of an option to a list
of strings. Using the "--no-<var>" form will reset the list
to empty.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-06-22 11:25:20 -07:00
Stephen Boyd
c2e86addb8 Fix sparse warnings
Fix warnings from 'make check'.

 - These files don't include 'builtin.h' causing sparse to complain that
   cmd_* isn't declared:

   builtin/clone.c:364, builtin/fetch-pack.c:797,
   builtin/fmt-merge-msg.c:34, builtin/hash-object.c:78,
   builtin/merge-index.c:69, builtin/merge-recursive.c:22
   builtin/merge-tree.c:341, builtin/mktag.c:156, builtin/notes.c:426
   builtin/notes.c:822, builtin/pack-redundant.c:596,
   builtin/pack-refs.c:10, builtin/patch-id.c:60, builtin/patch-id.c:149,
   builtin/remote.c:1512, builtin/remote-ext.c:240,
   builtin/remote-fd.c:53, builtin/reset.c:236, builtin/send-pack.c:384,
   builtin/unpack-file.c:25, builtin/var.c:75

 - These files have symbols which should be marked static since they're
   only file scope:

   submodule.c:12, diff.c:631, replace_object.c:92, submodule.c:13,
   submodule.c:14, trace.c:78, transport.c:195, transport-helper.c:79,
   unpack-trees.c:19, url.c:3, url.c:18, url.c:104, url.c:117, url.c:123,
   url.c:129, url.c:136, thread-utils.c:21, thread-utils.c:48

 - These files redeclare symbols to be different types:

   builtin/index-pack.c:210, parse-options.c:564, parse-options.c:571,
   usage.c:49, usage.c:58, usage.c:63, usage.c:72

 - These files use a literal integer 0 when they really should use a NULL
   pointer:

   daemon.c:663, fast-import.c:2942, imap-send.c:1072, notes-merge.c:362

While we're in the area, clean up some unused #includes in builtin files
(mostly exec_cmd.h).

Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-03-22 10:16:54 -07:00
Jonathan Nieder
979240fee3 parse-options: make resuming easier after PARSE_OPT_STOP_AT_NON_OPTION
Introduce a PARSE_OPT_NON_OPTION state, so parse_option_step()
callers can easily distinguish between non-options and other
reasons for option parsing termination (like "--").

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-12-07 14:19:32 -08:00
Jonathan Nieder
b0b3a8b666 parse-options: allow git commands to invent new option types
parse-options provides a variety of option behaviors, including
OPTION_CALLBACK, which should take care of just about any sane
behavior.  All supported behaviors obey the following constraint:

 A --foo option can only accept (and base its behavior on)
 one argument, which would be the following command-line
 argument in the "unsticked" form.

Alas, some existing git commands have options that do not obey that
constraint.  For example, update-index --cacheinfo takes three
arguments, and update-index --resolve takes all later parameters as
arguments.

Introduces an OPTION_LOWLEVEL_CALLBACK backdoor to parse-options so
such option types can be supported without tempting inventors of other
commands through mention in the public API.  Commands can set the
callback field to a function accepting three arguments: the option
parsing context, the option itself, and a flag indicating whether the
the option was negated.  When the option is encountered, that function
is called to take over from get_value().  The return value should be
zero for success, -1 for usage errors.

Thanks to Stephen Boyd for API guidance.

Improved-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-12-07 14:19:32 -08:00
Jonathan Nieder
b57c68a69e parse-options: never suppress arghelp if LITERAL_ARGHELP is set
The PARSE_OPT_LITERAL_ARGHELP flag allows a program to override the
standard "<argument> for mandatory, [argument] for optional" markup in
its help message.  Extend it to override the usual "no text for
disallowed", too (for the PARSE_OPT_NOARG | PARSE_OPT_LITERAL_ARGHELP
case, which was previously meaningless), to be more intuitive.

The motivation is to allow update-index to correctly advertise

	--cacheinfo <mode> <object> <path>
	                      add the specified entry to the index

while abusing PARSE_OPT_NOARG to disallow the "sticked form"

	--cacheinfo=<mode> <object> <path>

Noticed-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-12-07 14:19:32 -08:00
Stephen Boyd
c1f4ec9ef4 parse-options: do not infer PARSE_OPT_NOARG from option type
Simplify the "takes no value" error path by relying on PARSE_OPT_NOARG
being set correctly.  That is:

 - if the PARSE_OPT_NOARG flag is set, reject --opt=value
   regardless of the option type;
 - if the PARSE_OPT_NOARG flag is unset, accept --opt=value
   regardless of the option type.

This way, the accepted usage more closely matches the usage advertised
with --help-all.

No functional change intended, since the NOARG flag is only used
with "boolean-only" option types in existing parse_options callers.

Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-12-07 14:19:32 -08:00
Jonathan Nieder
5c400ed2e0 parse-options: sanity check PARSE_OPT_NOARG flag
Some option types cannot use an argument --- boolean options that
would set a bit or flag or increment a counter, for example.  If
configured in the flag word to accept an argument anyway, the result
is an argument that is advertised in "program -h" output only to be
rejected by parse-options::get_value.

Luckily all current users of these option types use PARSE_OPT_NOARG
and do not use PARSE_OPT_OPTARG.  Add a check to ensure that that
remains true.  The check is run once for each invocation of
parse_option_start().

Improved-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-12-07 14:19:10 -08:00
Jonathan Nieder
a02dd4ff7d parse-options: move NODASH sanity checks to parse_options_check
A dashless switch (like '(' passed to 'git grep') cannot be negated,
cannot be attached to an argument, and cannot have a long form.
Currently parse-options runs the related sanity checks when the
dashless option is used; better to always check them at the start of
option parsing, so mistakes can be caught more quickly.

The error message at the new call site is less specific about the
nature of the error, for simplicity.  On the other hand, it prints
which switch was problematic.  Before:

	fatal: BUG: dashless options can't be long

After:

	error: BUG: switch '(' uses feature not supported for dashless options

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-12-07 14:17:49 -08:00
Jonathan Nieder
1e5ce570ca parse-options: clearer reporting of API misuse
The PARSE_OPT_LASTARG_DEFAULT flag is meant for options like
--contains that (1) traditionally had a mandatory argument and
(2) have some better behavior to use when appearing in the final
position.  It makes no sense to combine this with OPTARG, so ever
since v1.6.4-rc0~71 (parse-options: add parse_options_check to
validate option specs, 2009-07-09) this mistake is flagged with

	error: `--option` uses incompatible flags LASTARG_DEFAULT and OPTARG

and an exit status representing an error in commandline usage.

Unfortunately that which might confuse scripters calling such an
erroneous program into thinking the _script_ contains an error.
Clarify that it is an internal error by dying with a message beginning
"error: BUG: ..." and status 128.

While at it, clean up parse_options_check to prepare for more checks.

Long term, it would be nicer to make such checks happen at compile
time.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-12-07 14:15:12 -08:00
Stephen Boyd
9ca1169fd9 parse-options: Don't call parse_options_check() so much
parse_options_check() is being called for each invocation of
parse_options_step which can be quite a bit for some commands. The
commit introducing this function cb9d398 (parse-options: add
parse_options_check to validate option specs., 2009-06-09) had the
correct motivation and explicitly states that parse_options_check()
should be called from parse_options_start(). However, the implementation
differs from the motivation. Fix it.

Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-12-06 16:51:36 -08:00
Thomas Rast
47e9cd28f8 parseopt: wrap rev-parse --parseopt usage for eval consumption
9c7304e (print the usage string on stdout instead of stderr,
2010-05-17) broke rev-parse --parseopt: when run with -h, the usage
notice on stdout ended up in the shell eval.

Wrap the usage in a cat <<\EOF ... EOF block when printing to stdout.
I do not expect any usage lines to ever start with EOF so this
shouldn't be an undue burden.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-13 09:38:14 -07:00
Giuseppe Scrivano
9c7304e3e3 print the usage string on stdout instead of stderr
When -h is used, print usage messages on stdout.  If a command is invoked with
wrong arguments then print the usage messages on stderr.

Signed-off-by: Giuseppe Scrivano <gscrivano@gnu.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-05-31 18:06:41 -07:00
Junio C Hamano
8b74d75cd2 parse-options: add parse_options_concat() to concat options
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-06 23:58:33 -08:00
Mark Lodato
73e9da0196 Add an optional argument for --color options
Make git-branch, git-show-branch, git-grep, and all the diff-based
programs accept an optional argument <when> for --color.  The argument
is a colorbool: "always", "never", or "auto".  If no argument is given,
"always" is used;  --no-color is an alias for --color=never.  This makes
the command-line interface consistent with other GNU tools, such as `ls'
and `grep', and with the git-config color options.  Note that, without
an argument, --color and --no-color work exactly as before.

To implement this, two internal changes were made:

1. Allow the first argument of git_config_colorbool() to be NULL,
   in which case it returns -1 if the argument isn't "always", "never",
   or "auto".

2. Add OPT_COLOR_FLAG(), OPT__COLOR(), and parse_opt_color_flag_cb()
   to the option parsing library.  The callback uses
   git_config_colorbool(), so color.h is now a dependency
   of parse-options.c.

Signed-off-by: Mark Lodato <lodatom@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-18 17:21:40 -08:00
Junio C Hamano
56eb8b43eb Merge branch 'jc/symbol-static'
* jc/symbol-static:
  date.c: mark file-local function static
  Replace parse_blob() with an explanatory comment
  symlinks.c: remove unused functions
  object.c: remove unused functions
  strbuf.c: remove unused function
  sha1_file.c: remove unused function
  mailmap.c: remove unused function
  utf8.c: mark file-local function static
  submodule.c: mark file-local function static
  quote.c: mark file-local function static
  remote-curl.c: mark file-local function static
  read-cache.c: mark file-local functions static
  parse-options.c: mark file-local function static
  entry.c: mark file-local function static
  http.c: mark file-local functions static
  pretty.c: mark file-local function static
  builtin-rev-list.c: mark file-local function static
  bisect.c: mark file-local function static
2010-01-20 14:37:25 -08:00
Junio C Hamano
41064ebc49 parse-options.c: mark file-local function static
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-12 01:06:08 -08:00
Junio C Hamano
cb6020bb01 Teach --[no-]rerere-autoupdate option to merge, revert and friends
Introduce a command line option to override rerere.autoupdate configuration
variable to make it more useful.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-12-04 00:20:48 -08:00
Andreas Schwab
6bbfd1fa98 parse-opt: ignore negation of OPT_NONEG for ambiguity checks
parse_long_opt always matches both --opt and --no-opt for any option
"opt", and only get_value checks whether --no-opt is actually valid.
Since the options for git branch contains both "no-merged" and "merged"
there are two matches for --no-merge, but no exact match.  With this
patch the negation of a NONEG option is rejected earlier, but it changes
the error message from "option `no-opt' isn't available" to "unknown
option `no-opt'".

[jk: added test]

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2009-09-29 07:28:47 -07:00
Junio C Hamano
f00ecbe42b Merge branch 'cc/replace'
* cc/replace:
  t6050: check pushing something based on a replaced commit
  Documentation: add documentation for "git replace"
  Add git-replace to .gitignore
  builtin-replace: use "usage_msg_opt" to give better error messages
  parse-options: add new function "usage_msg_opt"
  builtin-replace: teach "git replace" to actually replace
  Add new "git replace" command
  environment: add global variable to disable replacement
  mktag: call "check_sha1_signature" with the replacement sha1
  replace_object: add a test case
  object: call "check_sha1_signature" with the replacement sha1
  sha1_file: add a "read_sha1_file_repl" function
  replace_object: add mechanism to replace objects found in "refs/replace/"
  refs: add a "for_each_replace_ref" function
2009-08-21 18:47:53 -07:00
Johannes Schindelin
86b5efb286 parse-opt: optionally show "--no-" option string
It is usually better to have positive options, to avoid confusing double
negations.  However, sometimes it is desirable to show the negative option
in the help.

Introduce the flag PARSE_OPT_NEGHELP to do that.

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-31 07:47:38 -07:00
Linus Torvalds
2af202be3d Fix various sparse warnings in the git source code
There are a few remaining ones, but this fixes the trivial ones. It boils
down to two main issues that sparse complains about:

 - warning: Using plain integer as NULL pointer

   Sparse doesn't like you using '0' instead of 'NULL'. For various good
   reasons, not the least of which is just the visual confusion. A NULL
   pointer is not an integer, and that whole "0 works as NULL" is a
   historical accident and not very pretty.

   A few of these remain: zlib is a total mess, and Z_NULL is just a 0.
   I didn't touch those.

 - warning: symbol 'xyz' was not declared. Should it be static?

   Sparse wants to see declarations for any functions you export. A lack
   of a declaration tends to mean that you should either add one, or you
   should mark the function 'static' to show that it's in file scope.

   A few of these remain: I only did the ones that should obviously just
   be made static.

That 'wt_status_submodule_summary' one is debatable. It has a few related
flags (like 'wt_status_use_color') which _are_ declared, and are used by
builtin-commit.c. So maybe we'd like to export it at some point, but it's
not declared now, and not used outside of that file, so 'static' it is in
this patch.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-20 21:52:55 -07:00
Junio C Hamano
d978ead4c3 Merge branch 'sb/parse-options-integer'
* sb/parse-options-integer:
  parse-options: simplify usage argh handling
  parse-options: make OPT_INTEGER's argh explicit
2009-06-18 10:36:22 -07:00
Pierre Habouzit
cb9d398c35 parse-options: add parse_options_check to validate option specs.
It only searches for now for the dreaded LASTARG_DEFAULT | OPTARG
combination, but can be extended to check for any other forbidden
combination.

Options are checked each time we call parse_options_start.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-10 08:41:03 -07:00
Stephen Boyd
34aec9f573 parse-options: simplify usage argh handling
Simplify the argh printing by simply calling usage_argh() if the option
can take an argument. Update macros defined in parse-options.h to set
the PARSE_OPT_NOARG flag.

The only other user of custom non-argument taking options is git-apply
(in this case OPTION_BOOLEAN for deprecated options). Update it to set
the PARSE_OPT_NOARG flag.

Thanks to Ren辿 Scharfe for the suggestion and starter patch.

Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Reviewd-by: René Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-06 13:25:34 -07:00
Stephen Boyd
e3a0ca8784 parse-options: make OPT_INTEGER's argh explicit
OPTION_INTEGER hardcodes its argh member to be "n", but the decision is
hidden deep in usage_with_options_internal(). Make "n" the default argh
for the OPT_INTEGER macro while leaving it undecided for the OPTION_INTEGER
enum.

This makes it less surprising to users that argh is "n" when using the
OPT_INTEGER macro.

Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Reviewed-by: René Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-06 13:25:01 -07:00
Christian Couder
451bb210f8 parse-options: add new function "usage_msg_opt"
This function can be used instead of "usage_with_options" when you
want to print an error message before the usage string.

It may be useful because:

if (condition)
	usage_msg_opt("condition is false", usage, opts);

is shorter than:

if (condition) {
	fprintf(stderr, "condition is false\n\n");
	usage_with_options(usage, opts);
}

and may be more consistent.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-31 17:03:40 -07:00
Stephen Boyd
df217ed643 parse-opts: add OPT_FILENAME and transition builtins
Commit dbd0f5c (Files given on the command line are relative to $cwd,
2008-08-06) introduced parse_options_fix_filename() as a minimal fix.
OPT_FILENAME is intended to be a more robust fix for the same issue.
OPT_FILENAME and its associated enum OPTION_FILENAME are used to
represent filename options within the parse options API.

This option is similar to OPTION_STRING. If --no is prefixed to the
option the filename is unset. If no argument is given and the default
value is set, the filename is set to the default value. The difference
is that the filename is prefixed with the prefix passed to
parse_options() (or parse_options_start()).

Update git-apply, git-commit, git-fmt-merge-msg, and git-tag to use
OPT_FILENAME with their filename options. Also, rename
parse_options_fix_filename() to fix_filename() as it is no longer
extern.

Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-25 01:07:33 -07:00
Stephen Boyd
3778292017 parse-opts: prepare for OPT_FILENAME
To give OPT_FILENAME the prefix, we pass the prefix to parse_options()
which passes the prefix to parse_options_start() which sets the prefix
member of parse_opts_ctx accordingly. If there isn't a prefix in the
calling context, passing NULL will suffice.

Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-25 01:07:25 -07:00
Junio C Hamano
b064e2fc3d Merge branch 'sb/show-branch-parse-options' into sb/opt-filename
* sb/show-branch-parse-options:
  show-branch: migrate to parse-options API
  parse-options: add PARSE_OPT_LITERAL_ARGHELP for complicated argh's

Conflicts:
	parse-options.h
2009-05-25 00:59:29 -07:00
Stephen Boyd
29f25d493c parse-options: add PARSE_OPT_LITERAL_ARGHELP for complicated argh's
Usually, the argh element in struct option points at a placeholder value
(e.g. "val"), and is shown in the usage message as

    --option=<val>

by enclosing the string inside of angle brackets.

When the option is more complex (e.g. optional arguments separated by a
comma), you would want to produce a usage message that looks like

    --option=<val1>[,<val2>]

In such a case, the caller can pass a string to argh with placeholders
already enclosed in necessary angle brackets (e.g.  "<val1>[,<val2>]")
and set this flag.

Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-22 22:46:04 -07:00
René Scharfe
51a9949eda parseopt: add PARSE_OPT_NODASH
Add support for options that don't start with a dash.  Initially, they
don't accept arguments and can only be short options, i.e. consist of a
single character.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-09 00:29:50 -07:00
René Scharfe
e0319ff5ed parseopt: add OPT_NUMBER_CALLBACK
Add a way to recognize numerical options.  The number is passed to
a callback function as a string.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-09 00:29:47 -07:00
René Scharfe
2f4b97f910 parseopt: add OPT_NEGBIT
Add OPTION_NEGBIT and OPT_NEGBIT, mirroring OPTION_BIT and OPT_BIT.
OPT_NEGBIT can be used together with OPT_BIT to define two options
that cancel each other out.

Note: this patch removes the reminder from the test script because
it adds a test for --no-or4 and there already was one for --or4.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-09 00:28:53 -07:00
René Scharfe
0d260f9a09 parseopt: prevent KEEP_UNKNOWN and STOP_AT_NON_OPTION from being used together
As suggested by Junio, disallow the flags PARSE_OPT_KEEP_UNKNOWN and
PARSE_OPT_STOP_AT_NON_OPTION to be turned on at the same time, as a
value of an unknown option could be mistakenly classified as a
non-option, stopping the parser early.  E.g.:

	git cmd --known --unknown value arg0 arg1

The parser should have stopped at "arg0", but it already stops at
"value".

This patch makes parse_options() die if the two flags are used in
combination.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-09 15:32:50 -07:00
René Scharfe
49b6180252 parseopt: make usage optional
Allow usagestr to be NULL and don't display any help screen in
this case.  This is useful to implement incremental parsers.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-08 13:36:41 -07:00
René Scharfe
b92891f978 parseopt: add PARSE_OPT_NO_INTERNAL_HELP
Add a parseopt flag, PARSE_OPT_NO_INTERNAL_HELP, that turns off internal
handling of -h, --help and --help-all.  This allows the implementation
of custom help option handlers or incremental parsers.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-08 13:36:27 -07:00
René Scharfe
b5ce3a5430 parseopt: add PARSE_OPT_KEEP_UNKNOWN
Add a parseopt flag, PARSE_OPT_KEEP_UNKNOWN, that can be used to keep
unknown options in argv, similar to the existing KEEP flags.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-08 13:36:09 -07:00
Jake Goulding
269defdf30 Make opt_parse_with_commit() non-static
Moving opt_parse_with_commit() from branch to a common location, in
preparation for using it in tag. Rename it to match naming convention
of other option parsing functions.

Signed-off-by: Jake Goulding <goulding@vivisimo.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-28 11:32:27 -08:00
Tuncer Ayaz
7f87aff22c Teach/Fix pull/fetch -q/-v options
Implement git-pull --quiet and git-pull --verbose by
adding the options to git-pull and fixing verbosity
handling in git-fetch.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-14 17:18:32 -08:00
Junio C Hamano
f44bc33c72 Sync with 1.5.6.5 2008-08-06 13:50:48 -07:00
Junio C Hamano
dbd0f5c769 Files given on the command line are relative to $cwd
When running "git commit -F file" and "git tag -F file" from a
subdirectory, we should take it as relative to the directory we started
from, not relative to the top-level directory.

This adds a helper function "parse_options_fix_filename()" to make it more
convenient to fix this class of issues.  Ideally, parse_options() should
support a new type of option, "OPT_FILENAME", to do this uniformly, but
this patch is meant to go to 'maint' to fix it minimally.

One thing to note is that value for "commit template file" that comes from
the command line is taken as relative to $cwd just like other parameters,
but when it comes from the configuration varilable 'commit.template', it
is taken as relative to the working tree root as before.  I think this
difference actually is sensible (not that I particularly think
commit.template itself is sensible).

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-06 13:38:18 -07:00