SIMPLE SOLUTIONS

AEPROMPTCMD(1) - man page online | user commands

Change prompt color by change state.

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aepromptcmd(1)                                                                     aepromptcmd(1)

NAME aepromptcmd - change prompt color by change state
SYNOPSIS PROMPT_COMMAND="aepromptcmd"
DESCRIPTION The bash(1) shell has an interesting property: If the PROMPT_COMMAND vaiable is set, the value is executed as a command prior to issuing each primary prompt. (Actually, it can be a seties of semicolon separated commands.) In order to change the text back to normal, the PS1 variable needs to have "\33[0m" some‐ where near the end, otherwise things can get a little difficult to read. If you are using bash(1), you need to let it know these are unprintable (like this: "\[\33[0m\]") or it messes up command line editing. The aepromptcmd command is used to set the color of the prompt, based on the state of the current change. This is an idea taken from Kent Beck's Test Driven Development book. If the change is in the being developed or being integrated state and it needs to be built, the prompt is red; if it is built but it needs to be tested, the prompt is magenta, oth‐ erwise it is green.
Example Here is a short script you can put in your .bashrc file to turn on prompt coloring: if [ "$PS1" ] then case "$PROMPT_COMMAND" in "" ) PROMPT_COMMAND="aepromptcmd" PS1="$PS1^[[0m" ;; *aepromptcmd*) ;; *) PROMPT_COMMAND="$PROMPT_COMMAND;aepromptcmd" PS1="$PS1\[\33[0m\]" ;; esac export PROMPT_COMMAND export PS1 fi Note that this usually leaves your prompt default (black) when you are not somewhere inside a development directory. Limitations The aepromptcmd command uses the ANSI color escape sequences. It really should to use the tigetstr(3) function from terminfo(3) to do this in a terminal independent way. Code contributions welcome.
OPTIONS The following options are understood: -Change number This option may be used to specify a particular change within a project. See aegis(1) for a complete description of this option. -Project name This option may be used to select the project of interest. When no -Project option is specified, the AEGIS_PROJECT environment variable is consulted. If that does not exist, the user's $HOME/.aegisrc file is examined for a default project field (see aeuconf(5) for more information). If that does not exist, when the user is only working on changes within a single project, the project name defaults to that project. Otherwise, it is an error. -Help This option may be used to obtain more information about how to use the aepromptcmd program. -Verbose By default error messages are supressed, so that the prompt will be normal when you are outside an Aegis work area. Use this option to tuen error messages back on. See also aegis(1) for options common to all aegis commands. All options may be abbreviated; the abbreviation is documented as the upper case letters, all lower case letters and underscores (_) are optional. You must use consecutive sequences of optional letters. All options are case insensitive, you may type them in upper case or lower case or a com‐ bination of both, case is not important. For example: the arguments "-project, "-PROJ" and "-p" are all interpreted to mean the -Project option. The argument "-prj" will not be understood, because consecutive optional characters were not supplied. Options and other command line arguments may be mixed arbitrarily on the command line, after the function selectors. The GNU long option names are understood. Since all option names for aepromptcmd are long, this means ignoring the extra leading '-'. The "--option=value" convention is also understood.
EXIT STATUS The aepromptcmd command will exit with a status of 1 on any error. The aepromptcmd com‐ mand will only exit with a status of 0 if there are no errors.
ENVIRONMENT VARIABLES See aegis(1) for a list of environment variables which may affect this command. See aep‐ conf(5) for the project configuration file's project_specific field for how to set envi‐ ronment variables for all commands executed by Aegis.
AUTHOR Peter Miller E-Mail: @canb.auug.org.au /\/\* WWW: http://www.canb.auug.org.au/~millerp/
Reference Manual Aegis aepromptcmd(1)
This manual Reference Other manuals
aepromptcmd(1) referred by
refer to aegis(1) | aeuconf(5) | bash(1) | conf(5) | terminfo(3ncurses)