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aesub(5) File Formats Manual aesub(5) NAME aesub - aegis command substitutions DESCRIPTION When other programs are invoked by the aegis program, it is usually via a command string in a configuration file. This section describes the format of these command strings. GENERAL FORM The command strings are very similar to shell variables. An example will illustrate this: build_command = "cook project=${project} change=${change}"; In this command definition, the "${project}" part is a substitution: the name of the project will be substituted in the command at this point. Substitutions may take several forms: $name This is the same as saying "${name}". The name must start with an alphabetic, and be followed by zero or more alphanu- merics. ${name} The name in this form may contain any non-blank characters, and it may be subject to substitution. ${name arg...} The name and the arguments in this form may contain any non- blank characters, and it may be subject to further substitu- tion. Within the braces ({ and }) pairs of single quote char- acters ('blah blah') may be used to insulate spaces and other special characters, or you may use the back quote (\) to es- cape a single character. $$ This is replaced by a single $ character. It avoid RCS expan- sions, you can also use ${$}. %% This is replaced by a single % character. Percent (%) fol- lowed by anything else is illegal. $#...\n This is a comment, usually found in template files read in us- ing the ${read_file} substitution. It consumes all characters up to and including the next newline. (See also ${comment}, below.) As another example, the dirname substitution is replaced by the direc- tory name of the argument, rather like the dirname(1) command. In the command history_query_command = "get -t -g ${Dirname $History}/s.${Basename $History}"; the Dirname and Basename substitutions are used to construct a suit- able path to the SCCS file in the history directory. ABBREVIATIONS The names of the various substitutions may be abbreviated. In the above examples, and in the lists which follow, the minimum abbrevia- tion is the uppercase letters. All substitution name are case insen- sitive. The above example could be abbreviated to history_query_command = "get -t -g ${d $h}/s.${b $h}"; Ambiguous abbreviations will result in a fatal error message. SUBSTITUTIONS There are many substitutions which are always understood, and some which are specific to the command being substituted. Specific entries will be defined in the relevant manual section. The following lists contains those substitutions which are always un- derstood: Active_Directory The absolute path of the change's development directory, if the change is between the being developed and awaiting inte- gration states. The absolute path of the change's integration directory, if the change is in the being integrated state. Not available when the change is in the awaiting development or completed states. This rather like the default behaviour of the aecd(1) command. Add_Path_Suffix This substitution may be used to add a suffix to each element of a colon-separated path list. The first argument is the suffix to use, the second and subsequent arguments are the colon-separated paths to work on. The result is a single colon separated path. Often used in combination with the ${search_path} substitution, below. Administrator_List Space separated list of the project's administrators. Takes an optional argument in the same form as the user substitu- tion. ARCHitecture This substitution is replaced by the architecture name appro- priate for the current execution environment. Requires no ar- guments. See the architecture field of aepconf(5) for more information. When used in commands, you may need to surround this substitution with the quote substitution (see below), if any of your architecture names contain shell special charac- ters. BaseLine Absolute path of the the project's baseline. Basename This substitution takes one argument, a pathname. The value of the substitution will be the last element of the pathname. This is similar to the basename(1) command. BAse_RElative This substitution takes at least one pathname. The value of the substitution is the base-relative filenames, with any change-specific or project baseline specific leading path re- moved. The file does not have to be a project source file. (This is almost the inverse of the $source substitution, be- low.) BINary_DIRectory The absolute path of Aegis' architecture-specific binary (exe- cutables) directory. This corresponds to the "./configure --bindir" option when Aegis was built. This is where most of the Aegis executable programs are installed. CAPitalize This substitution takes at least one argument. The value of the substitution will be the arguments with the first letter of each word forced to upper case and the rest forced to lower case. Change This substitution provides various information about the change, based on the argument it is given. attribute This substitution takes an additional argument, the name of a change attribute (see aeca(1) and aecattr(5) for more information). This returns the value listed in the change attributes, or the empty string if the change does not have the named attribute. cause This returns the cause of the change. date format This returns the completion date of the change. See DATE section for additional arguments. debian-version This returns a Debian-esque version stamp for the change. rpm-version This returns an RPM-esque version stamp for the change. delta This returns the delta number of the change. Only valid for completed changes. delta_uuid This returns the delta UUID of the change, assigned on integrate pass, a globally unique identifier for the state of the project when this change was integrated (different for all repositories). Only valid for be- ing_integrated and completed changes. description This returns the brief description of the change. developer This returns the name of the developer of the change. development_directory This returns the development directory of the change. integrator This returns the name of the integrator of the change. integration_directory This returns the integration directory of the change. number This returns the number of the change. (This is the default if no argument is given.) reviewer This returns the name of the reviewer of the change. state This returns the state of the change. uuid This returns the UUID of the change. version This returns the version of the change. Change_Attribute This substitution takes exactly one argument. This argument is a name of a change attribute (see aeca(1) and aecattr(5) for more information). This returns the value listed in the change attributes, or the empty string if the change does not have the named attribute. Change_Files This is replaced by a space separated list of change file names. There are several qualifying arguments you can give to this substitution: action You may give one or more file actions (e.g. modify). Only files with one of the actions will be returned. By default, all file actions are returned. type You may give one or more file types (e.g. source). Only files with one of the types will be returned. By default, all file types are returned. not Inverts the sense of operations. For example ${change_files not remove} will return the names of all change files not being removed. quote This does not affect which file are selected, but it causes the file names to be quoted if they contain shell meta-characters. If you specify both actions and types, only files both quali- fiers will be returned. For example ${change_files modify test} will return only the names of automatic test files which are being modified. Change_Developer_List Space separated list of all the change's developers. Note that this is different than the Developer_List substitution. Change_Reviewer_List Space separated list of the change's reviewers since the last develop end. Note that this is different than the Reviewer_- List substitution. Bt using the review_policy_command field of the project configuration file this value can have more than one reviewer, because this allows a project to require a change to need to be reviewed more than once before it can be integrated. COMment Inserts exactly nothing; any and all arguments are ignored. Another form of comment is "$#" which extends to the end of the current line. Copyright_Years Inserts a comma separated list of copyright years from the project attributes. This list of years is maintained by aegis at integrate begin, and so is only guaranteed to be up-to-date in the'being integrated' state. Do not use this substitution in new file templates, it is not guaranteed to be up-to-date in the 'being developed' state; use the ${date %Y} substitu- tion in new file templates. This list contains spaces, so if you use it to build commands, you will probably need to quote, it as well. DATa_DIRectory The absolute path of Aegis' architecture-neutral library di- rectory. This corresponds to the "./configure --datadir" op- tion when Aegis was built. This is where most of the scripts included with Aegis are installed. DAte With no arguments, the output is the current date. If there are arguments, they form a format string. This is similar to the date(1) command on many UNIX systems. For a description of the date formats, see the DATE section, below. DELta The delta number of the change. This is only available when the change is in the being integrated state or the completed state. DEVeloper The name of the developer. Takes an optional argument in the same form as the user substitution. DEVeloper_List Space separated list of the project's developers. Takes an optional argument in the same form as the user substitution. Note that this is different than the Change_DeveloperList sub- stitution. Development_Directory The absolute path of the change's development directory. Only available when the change is between the being developed state and the being integrated state. DIFF The absolute path of the diff command, as discovered when Aegis was built. It tries to locate GNU Diff at build time to provide maximum functionality. Dirname This substitution takes at least one argument, a pathname. The value of the substitution will be everything but the last element of the pathname. This is similar to the dirname(1) command. Dirname_RELative This substitution takes at least one argument, a pathname. The value of the substitution will be everything but the last element of the pathname. This is similar to the dirname sub- stitution, except that if there are no directory components, it returns dot ("."). DownCase This substitution takes at least one argument. The value of the substitution will be the argument with any upper case let- ters mapped to lower case. EMail_Address This substitution takes one or more user names as arguments. It replaces them with email addresses. (It is an error if any user name is unknown.) This substitution takes options. You may specify one or more of them immediately after the substitution name. -Comma This option may be used to specify that the email ad- dresses are to be separated by commas. -Quote This option may be used to specify that the email ad- dresses are to be quoted to insulate shell special characters. See aeuconf(5) for where this is set. ENVironment This substitution takes at least one argument. The value of the substitution is the value of the corresponding environment variable, or empty of undefined. ERrno This substitution takes no arguments. The value of the sub- stitution will be the value if the errno variable provided by the system, as mapped through the strerror function. Thus you may give the users informative system error messages. EXpression This substitution evaluates simple arithmetic expressions. Addition, subtraction, division, multiplication, modulo and negation are understood. The 6 basic comparison operators are available. The usual C syntax and precedence are used. The arguments must constitute a valid expression, white space and word boundaries are ignored. History_Directory This substitution takes zero arguments. It is replaced by the absolute path of the history directory of the project. History_Path This substitution takes one argument, the name of a source file. It is replaced by the absolute path of the history file for that source file. Note that you may beed to massage the file name a little for you proticular history tool, just as the history commands in the aegis.conf file do. This substitution takes zero arguments. It is replaced by the absolute path of the history directory of the project. IDentifier This substitution takes at least one argument. The value of the substitution will be the argument with all characters but alpha numerics mapped into an underscore (_), so as to form a legal C identifier. INTegration_Directory The absolute path of the change's integration directory. Only available when the change is in the being integrated state. INTegrator The name of the change's integrator. Only available when the change is in the being integrated state or the completed state. Takes an optional argument in the same form as the user substitution. INTegrator_List Space separated list of the project's integrators. Takes an optional argument in the same form as the user substitution. LEFt This substitution extracts the left hand side of strings. It takes two arguments: the first is the string, the second is the number of characters. LENgth This substitution determines the length of strings, the result is a number. It takes one argument: the string to be mea- sured. LIBrary The absolute path of Aegis' library directory. This corre- sponds to the "./configure --datadir" option when Aegis was built. This substitution is deprecated - please use ${datadir} instead. LIBrary_DIRectory The absolute path of Aegis' architecture-specific library di- rectory. This corresponds to the "./configure --libdir" op- tion when Aegis was built. Name_Maximum This substitution is used to get the maximum file name length within a file system. It takes at least one argument: the name of a directory within the file system. Frequently used with ${left} to crop filenames to the file system maximum. PAth_Reduce This function requires at least one argument. It is used to remove duplicates from a command search path, such as may be found in the PATH environment variable. If more than one ar- gument is given, all are included in the results, as if they were separated by colons. PERL This function requires zero arguments. It is replaced by the absolute path of a Perl interpreter. PLural This function requires 2 or 3 arguments. The first argument is evaluated as a number, if it is plural (not equal to 1) the second argument is the result, otherwise the third argument is the result (or empty if not given). This is mostly used to pluralize sentences in Germainic error messages. PLural_Forms The plural_forms substitution is similar to the ${plural} sub- stitution, except that it reads and understands the Plural- Forms: header in the message catalogue. This means that it understands a greater range of pluralization mechanisms than the simple ${plural} substitution. (For a description of the Plural-Forms: header, see the GNU Gettext manual.) The first argument is the number. Second is the singular form (corresponding to the Plural-Forms: expression evaluating to zero), the third and subsequent arguments are the various plu- ral forms (corresponding to the Plural-Forms: expression eval- uating to 1, 2, 3, etc. The Plural-Forms: expression is required evaluate to less than nplurals. If it does not, the second argument (the singular form) is used. If there are too few arguments to this substi- tution, the second argument (the singular form) is again used. Note that in the default case (used for English and other Ger- manic languages), the arguments are the reverse of those ex- pected by the ${plural} substitution. Project This substitution provides various information about the project, based on the argument it is given. name This returns the name of the project. (This is the default if no argument is given.) description This returns the description of the project (the one which appears in the project listing). trunk_name This returns the name of the trunk of the project (i.e. no branch numbers included). trunk_description This returns the description of the trunk of the project. version This returns the version of the project. version_long This returns the version of the project, including the delta number. Project_Specific This substitution takes exactly one argument. This argument is a name to be found in the project configuration file's project_specific field (see aepconf(5) for more information). This returns the value listed in the project configuration file. Unknown attributes will be replaced with the empty string. QUote This substitution may be used to quote shell special charac- ters. If no quoting is required, not quotes will be inserted. This is used to insulate shell special characters in filenames when forming commands. Read_File Read a file and substitute the contents of the file. Requires exactly one argument, the pathname of the file to be read. If the pathname is a project source file, you will need to use the source substitution to resolve the path. It is a fatal error if the file does not exist, or is not readable. It is a fatal error if the pathname is not absolute (because the cur- rent directory is undefined). Read_File_Simple Read a file and without substituting the contents of the file. Requires exactly one argument, the pathname of the file to be read. If the pathname is a project source file, you will need to use the source substitution to resolve the path. It is a fatal error if the file does not exist, or is not readable. It is a fatal error if the pathname is not absolute (because the current directory is undefined). Reviewer The name of the change's reviewer. Only available when the change is between the awaiting integration state and the com- pleted state. Takes an optional argument in the same form as the user substitution. Reviewer_List Space separated list of the project's reviewers. Takes an op- tional argument in the same form as the user substitution. Note that this is different than the Change_Reviewer_List sub- stitution. RIght This substitution extracts the right hand side of strings. It takes two arguments: the first is the string, the second is the number of characters. Search_Path The Search_Path substitution is replaced by a colon separated list of absolute paths to search when building a change, it will point from a change to its branch and so on up to the project trunk. Search_Path_Executable The Search_Path_Executable substitution is usually the same as the Search_Path substitution. However, during an "aegis -Test -BaseLine" command, it contains the baseline as the first ele- ment, rather then the development directory or the integration directory. This is of most use when looking for executables and executable support files while running tests. SHell The absolute path of a Bourne shell which understands func- tions. Requires exactly zero arguments. Source Resolve the argument filename into a pathname. It is an error if the file is not a source file. An optional second argument may be "Absolute" or "Relative", and may be abbreviated. Rel- ative will attempt to provide a development-directory-relative pathname whenever possible, absolute will always result in an absolute path. The default is "Relative". (For the inverse mapping, see ${BAse_RElative}, above.) SPLit This substitution may be used to split strings are specified separators. The first argument is the separator character to be used, subsequent arguments are strings to be split. The result is the collection is split strings of the second a follwoing arguments, separated by spaces. STate The state the current change is in. It is an error if the substitution does not refer to a change. SUBSTitute Regular expression substitution. The first argument is the pattern to match, the second argument is the replacement string. The third and subsequent arguments are modified as specified by the first two arguments. The search is not an- chored, and the replacement will happen as many times as pos- sible. Use "^" to match the beginning, and "$" to match the end. SUBSTRing This substitution extracts a substring from the middle of strings. It takes three arguments: the first is the string, the second is the star character (counting from zero), the third is the number of characters. SWitch Select amongst a set of values. The first argument is ex- pected to be a number. If the number is zero, the second ar- gument is used; if the number is one, the third argument is used; etc. If the number is negative, or exceeds the avail- able arguments, the last argument is used. Trim_DIRectory This substitution takes one or two arguments. If given one argument, one directory component (if present) is removed from the argument, which is assumed to be a file name. If two ar- guments are present, the first is a directory count; at most this many directory components (if present) will be removed. The base file name is always left. Trim_EXTension This substitution takes one argument. Any file name extension (a dot characters and the characters following) will be re- moved from the final filename section of the argument. UNSplit This substitution may be used to reverse the effects of the split substitution. The first arguments is a seaparator char- acter, the second and following arguments are strings to be joined together using the separator character. The result is a single string. UpCase This substitution takes at least one argument. The value of the substitution will be the argument with any lower case let- ters mapped to upper case. USer This substitution provides various information about the user who executed the command, based on the argument it is given. login The login name of the user. (This is the default if no argument is given.) name The full name of the user. email The email address of the user. quoted_email The email address of the user, quoted to avoid shell special characters. home The home directory of the user. Version The version of the change. If the change is in the being in- tegrated state or the completed state, the version will be of the form "a.b.Dddd", where "a" is the project's major version number, "b" is the project's minor version number, and "ddd" is the change's delta number. If the change is in any other state, the version will be of the form "a.b.Cccc", where "ccc" is the change number. delta_uuid This variant gives the change's delta-UUID assigned at integrate pass. Only valid for being_integrated and completed changes. Zero_Pad This substitution is used to zero pad a string on the left. It takes two arguments: the first is the string to be padded, the second is the minimum string width. DATE This section describes the format specifiers accepted by the date sub- stitution. These are the same specifiers as defined by the ANSI C standard for the strftime function. %% The percent character (%) %a the abbreviated weekday name %A the full weekday name %b the abbreviated month name %B the full month name %c the date and time %d the day of the month, zero padded %H the hour of the 24-hour day %I the hour of the 12-hour day %j the day number of year, zero padded, one based %m the month of the year, zero padded, one based %M the minute of the hour, zero padded %p meridian indicator, AM or PM as appropriate %S the second of the minute %U the Sunday week of the year %w the day of the week, Sunday is 0 %W the Monday week of the year %x the date, as mmm dd yyyy %X the time, as hh:mm:ss %y the year of the century %Y the year including the century %Z time zone abbreviation Using an undefined format specifier will produce random results, de- pending on the version of UNIX you are on. SEE ALSO aesub(1) Substitute and print strings. COPYRIGHT aegis version 4.25.D510 Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Peter Miller The aegis program comes with ABSOLUTELY NO WARRANTY; for details use the 'aegis -VERSion License' command. This is free software and you are welcome to redistribute it under certain conditions; for details use the 'aegis -VERSion License' command. AUTHOR Peter Miller E-Mail: pmiller@opensource.org.au /\/\* WWW: http://miller.emu.id.au/pmiller/ Reference Manual Aegis aesub(5)
NAME | DESCRIPTION | GENERAL FORM | ABBREVIATIONS | SUBSTITUTIONS | DATE | SEE ALSO | COPYRIGHT | AUTHOR
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