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2011-08-19want_color: automatically fallback to color.uiLibravatar Jeff King1-5/+0
All of the "do we want color" flags default to -1 to indicate that we don't have any color configured. This value is handled in one of two ways: 1. In porcelain, we check early on whether the value is still -1 after reading the config, and set it to the value of color.ui (which defaults to 0). 2. In plumbing, it stays untouched as -1, and want_color defaults it to off. This works fine, but means that every porcelain has to check and reassign its color flag. Now that want_color gives us a place to put this check in a single spot, we can do that, simplifying the calling code. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-19diff: don't load color config in plumbingLibravatar Jeff King1-1/+3
The diff config callback is split into two functions: one which loads "ui" config, and one which loads "basic" config. The former chains to the latter, as the diff UI config is a superset of the plumbing config. The color.diff variable is only loaded in the UI config. However, the basic config actually chains to git_color_default_config, which loads color.ui. This doesn't actually cause any bugs, because the plumbing diff code does not actually look at the value of color.ui. However, it is somewhat nonsensical, and it makes it difficult to refactor the color code. It probably came about because there is no git_color_config to load only color config, but rather just git_color_default_config, which loads color config and chains to git_default_config. This patch splits out the color-specific portion of git_color_default_config so that the diff UI config can call it directly. This is perhaps better explained by the chaining of callbacks. Before we had: git_diff_ui_config -> git_diff_basic_config -> git_color_default_config -> git_default_config Now we have: git_diff_ui_config -> git_color_config -> git_diff_basic_config -> git_default_config Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-19color: delay auto-color decision until point of useLibravatar Jeff King1-0/+11
When we read a color value either from a config file or from the command line, we use git_config_colorbool to convert it from the tristate always/never/auto into a single yes/no boolean value. This has some timing implications with respect to starting a pager. If we start (or decide not to start) the pager before checking the colorbool, everything is fine. Either isatty(1) will give us the right information, or we will properly check for pager_in_use(). However, if we decide to start a pager after we have checked the colorbool, things are not so simple. If stdout is a tty, then we will have already decided to use color. However, the user may also have configured color.pager not to use color with the pager. In this case, we need to actually turn off color. Unfortunately, the pager code has no idea which color variables were turned on (and there are many of them throughout the code, and they may even have been manipulated after the colorbool selection by something like "--color" on the command line). This bug can be seen any time a pager is started after config and command line options are checked. This has affected "git diff" since 89d07f7 (diff: don't run pager if user asked for a diff style exit code, 2007-08-12). It has also affect the log family since 1fda91b (Fix 'git log' early pager startup error case, 2010-08-24). This patch splits the notion of parsing a colorbool and actually checking the configuration. The "use_color" variables now have an additional possible value, GIT_COLOR_AUTO. Users of the variable should use the new "want_color()" wrapper, which will lazily determine and cache the auto-color decision. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-18git_config_colorbool: refactor stdout_is_tty handlingLibravatar Jeff King1-1/+7
Usually this function figures out for itself whether stdout is a tty. However, it has an extra parameter just to allow git-config to override the auto-detection for its --get-colorbool option. Instead of an extra parameter, let's just use a global variable. This makes calling easier in the common case, and will make refactoring the colorbool code much simpler. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-04-04Share color list between graph and show-branchLibravatar Dan McGee1-0/+3
This also adds the new colors to show-branch that were added a while back for graph output. Signed-off-by: Dan McGee <dpmcgee@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-03-08wt-status: add helpers for printing wt-status linesLibravatar Jonathan Nieder1-0/+3
Introduce status_printf{,_ln,_more} wrapper functions around color_vfprintf() which take care of adding "#" to the beginning of status lines automatically. The semantics: - status_printf() is just like color_fprintf() but it adds a "# " at the beginning of each line of output; - status_printf_ln() is a convenience function that additionally adds "\n" at the end; - status_printf_more() is a variant of status_printf() used to continue lines that have already started. It suppresses the "#" at the beginning of the first line. Helped-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-12-10default color.status.branch to "same as header"Libravatar Jeff King1-0/+5
This gives it the same behavior as we had prior to 1d28232 (status: show branchname with a configurable color). To do this we need the concept of a "NIL" color, which is provided by color.[ch]. The implementation is very simple; in particular, there are no precautions taken against code accidentally printing the NIL. This should be fine in practice because: 1. You can't input a NIL color in the config, so it must come from the in-code defaults. Which means it is up the client code to handle the NILs it defines. 2. If we do ever print a NIL, it will be obvious what the problem is, and the bug can be fixed. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-04-14diff: add --word-diff option that generalizes --color-wordsLibravatar Thomas Rast1-1/+0
This teaches the --color-words engine a more general interface that supports two new modes: * --word-diff=plain, inspired by the 'wdiff' utility (most similar to 'wdiff -n <old> <new>'): uses delimiters [-removed-] and {+added+} * --word-diff=porcelain, which generates an ad-hoc machine readable format: - each diff unit is prefixed by [-+ ] and terminated by newline as in unified diff - newlines in the input are output as a line consisting only of a tilde '~' Both of these formats still support color if it is enabled, using it to highlight the differences. --color-words becomes a synonym for --word-diff=color, which is the color-only format. Also adds some compatibility/convenience options. Thanks to Junio C Hamano and Miles Bader for good ideas. Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-20Merge branch 'ml/color-grep'Libravatar Junio C Hamano1-0/+11
* ml/color-grep: grep: Colorize selected, context, and function lines grep: Colorize filename, line number, and separator Add GIT_COLOR_BOLD_* and GIT_COLOR_BG_*
2010-03-20Merge branch 'jc/color-attrs'Libravatar Junio C Hamano1-2/+14
* jc/color-attrs: color: allow multiple attributes
2010-03-07color: allow multiple attributesLibravatar Junio C Hamano1-2/+14
In configuration files (and "git config --color" command line), we supported one and only one attribute after foreground and background color. Accept combinations of attributes, e.g. [diff.color] old = red reverse bold Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-03-07Add GIT_COLOR_BOLD_* and GIT_COLOR_BG_*Libravatar Mark Lodato1-0/+11
Add GIT_COLOR_BOLD_* macros to set both bold and the color in one sequence. This saves two characters of output ("ESC [ m", minus ";") and makes the code more readable. Add the remaining GIT_COLOR_BG_* macros to make the list complete. The white and black colors are not included since they look bad on most terminals. Signed-off-by: Mark Lodato <lodatom@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-11-27Add a notice that only certain functions can print color escape codesLibravatar Johannes Sixt1-0/+5
We emulate color escape codes on Windows by overriding printf, fprintf, and fputs. Warn developers that these are the only functions that can be used to print them. Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-11-15Check the format of more printf-type functionsLibravatar Tarmigan Casebolt1-0/+2
We already have these checks in many printf-type functions that have prototypes which are in header files. Add these same checks to some more prototypes in header functions and to static functions in .c files. cc: Miklos Vajna <vmiklos@frugalware.org> Signed-off-by: Tarmigan Casebolt <tarmigan+git@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-13graph API: Added logic for colored edgesLibravatar Allan Caffee1-0/+1
Modified the graph drawing logic to colorize edges based on parent-child relationships similiarly to gitk. Signed-off-by: Allan Caffee <allan.caffee@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-13Clean up use of ANSI color sequencesLibravatar Arjen Laarhoven1-0/+10
Remove the literal ANSI escape sequences and replace them by readable constants. Signed-off-by: Arjen Laarhoven <arjen@yaph.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-25Merge branch 'js/diff-color-words'Libravatar Junio C Hamano1-0/+1
* js/diff-color-words: Change the spelling of "wordregex". color-words: Support diff.wordregex config option color-words: make regex configurable via attributes color-words: expand docs with precise semantics color-words: enable REG_NEWLINE to help user color-words: take an optional regular expression describing words color-words: change algorithm to allow for 0-character word boundaries color-words: refactor word splitting and use ALLOC_GROW() Add color_fwrite_lines(), a function coloring each line individually
2009-01-17color: make it easier for non-config to parse color specsLibravatar Jeff King1-1/+2
We have very featureful color-parsing routines which are used for color.diff.* and other options. Let's make it easier to use those routines from other parts of the code. This patch adds a color_parse_mem() helper function which takes a length-bounded string instead of a NUL-terminated one. While the helper is only a few lines long, it is nice to abstract this out so that: - callers don't forget to free() the temporary buffer - right now, it is implemented in terms of color_parse(). But it would be more efficient to reverse this and implement color_parse in terms of color_parse_mem. This also changes the error string for an invalid color not to mention the word "config", since it is not always appropriate (and when it is, the context is obvious since the offending config variable is given). Finally, while we are in the area, we clean up the parameter names in the declaration of color_parse; the var and value parameters were reversed from the actual implementation. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-17Add color_fwrite_lines(), a function coloring each line individuallyLibravatar Johannes Schindelin1-0/+1
We have to set the color before every line and reset it before every newline. Add a function color_fwrite_lines() which does that for us. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-14Provide git_config with a callback-data parameterLibravatar Johannes Schindelin1-1/+1
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>
2008-02-18Add color.ui variable which globally enables colorization if setLibravatar Matthias Kestenholz1-0/+11
Signed-off-by: Matthias Kestenholz <mk@spinlock.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-05git config --get-colorboolLibravatar Junio C Hamano1-1/+1
This adds an option to help scripts find out color settings from the configuration file. git config --get-colorbool color.diff inspects color.diff variable, and exits with status 0 (i.e. success) if color is to be used. It exits with status 1 otherwise. If a script wants "true"/"false" answer to the standard output of the command, it can pass an additional boolean parameter to its command line, telling if its standard output is a terminal, like this: git config --get-colorbool color.diff true When called like this, the command outputs "true" to its standard output if color is to be used (i.e. "color.diff" says "always", "auto", or "true"), and "false" otherwise. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-09-19Enable wt-status output to a given FILE pointer.Libravatar Kristian Høgsberg1-2/+2
Still defaults to stdout, but you can now override wt_status.fp after calling wt_status_prepare(). Signed-off-by: Kristian Høgsberg <krh@redhat.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2006-09-08Move color option parsing out of diff.c and into color.[ch]Libravatar Jeff King1-0/+12
The intent is to lib-ify colorizing code so it can be reused. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <junkio@cox.net>