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- CEXTRC(5) FILE FORMATS CEXTRC(5)
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- NAME
- cextrc - C prototype/documentation extractor customization
- file format
-
- SYNOPSIS
- .cextrc
-
- DESCRIPTION
- The programs cextract(1) and cextdoc(1) extract function
- prototypes from C source code and create header and documen-
- tation files respectively. The .cextrc customization files
- allow users to specify which options are set for those pro-
- grams, without having to always use the command line.
-
- The configuration files are read prior to the parsing of the
- command line options, as well as whenever the `-q' flag is
- encountered.
-
- FORMAT
- The file should be a normal text file, with each customiza-
- tion command on a separate line. Blank lines and any line
- beginning with a `#' will be ignored.
-
- Any command preceded by the string "doc-only " will only be
- used in documentation mode, and any command preceded by
- "extract-only " will only be used in extraction mode.
-
- Commands which are preceded by either a `!' or the string
- "no-" or "no" will be interpreted as disabling that option,
- if appropriate.
-
- COMMANDS
- The full list of configuration commands is given below.
-
- ansi-code
- If dual-output and merge-output modes are not enabled,
- produce output in ANSI C format, with full prototyping.
- This command does not do anything when used in documen-
- tation mode.
-
- break-after-types
-
- break-types
- When enabled, a newline will be inserted between the
- function type and the function name in the function
- declarations.
-
- comments
-
- yank-comments
- Extract the comment immediately before the function
- definition, and display it upon output.
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- CEXTRC(5) FILE FORMATS CEXTRC(5)
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- config-file: file
- Read in the specified file and parse it for configura-
- tion commands.
-
- cpp-program: program
- Specify which program is to be used as a C preproces-
- sor. This program should resolve all C defines and
- while, hopefully, leaving the comments intact.
-
- doc-mode
- Enable documentation mode with normal text output.
- This is the default setting for cextdoc(1).
-
- define: expression
- Pass the specified expression to the C preprocessor
- with a "-D" string prepended to it. This command is
- equivalent to the `-D' command line option.
-
- dual-output
- Provide output in both ANSI and K&R C formats,
- separated by an "#if __STDC__" ... "#else" ... "#endif"
- construct. This command does not do anything when used
- in documentation mode or if the merge-output option is
- enabled.
-
- externs
- Prepend an "extern" to each function description upon
- output.
-
- extract-mode
- Enable extraction mode and generate output which can be
- used as a C header file defining the prototypes for all
- of the functions which are encountered. The is the
- default mode for cextract(1).
-
- first-comments
- Include in the output the initial comment encountered
- in each file.
-
- filename
-
- prepend-filename
- If the "first-comments" option is enabled, prepend the
- name of each file to the output of initial comments.
-
- font % ##
- Assign a troff font "##" to a given font type `%', when
- using troff documentation mode. The possible font
- types are `1' or `t', `2' or `c', `3' or `n', and `4'
- or `p' for the title, comment, name, and parameter list
- respectively. The troff font "##" is a normal one or
- two character troff font, such as "CO" for Courier
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- CEXTRC(5) FILE FORMATS CEXTRC(5)
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- Oblique.
-
- header-string: string
- When in extraction mode, enclose the output within
- preprocessor directives testing for the definition of
- string. This method is used with many system header
- files, to insure that they are not "#include"d more
- than once. If this option is not used, the output will
- be enclosed within a "#ifndef __CEXTRACT__", "#endif /*
- __CEXTRACT__ */" sequence instead.
-
- include: directory
- Pass the specified directory to the C preprocessor with
- a "-I" string prepended to it. This command is
- equivalent to the `-I' command-line option.
-
- merge-output
- Merge the ANSI and K&R output into a single line of
- output to make it take up less space. A macro is used
- to expand the parameter list for ANSI compilers. This
- option overrides both the dual-output and ansi-code
- options. There is no affect if the documentation mode
- is enabled.
-
- multi-comments
-
- multiple-comments
- When extracting comments, assume that consecutive com-
- ments are actually one single comment. This allows
- people that place comment delimiters at the beginning
- and end of each line to have their comments properly
- captured.
-
- output-file: outfile
- Store the output in the specified file.
-
- replace
- Replace the first string which matches a variable,
- type, or both (as selected) with the second string.
- The format is:
- replace [all/type/variable] "string1" "string2"
- For example, on Sun machines, the automatic "FILE"
- replacement could be accomplished using a command like:
- replace type "struct _iobuf" "FILE"
- However, this should not need to be entered by the
- average user since it is handled automatically by cex-
- tract(1), as is the varargs system.
-
- remove-names
-
- discard-names
- Remove variable names from the prototype list prior to
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- output.
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- roff-mode
-
- troff-mode
- Enable documentation mode with troff -ms format output.
- This option is overridden by the doc-mode or extract-
- mode options.
-
- show-all
-
- show-anyway
- When output is K&R C, display prototypes in comments.
- When dual-output is enabled, display comments and pro-
- totypes in both sections; otherwise, display comments
- and prototypes only in the ANSI C portion. This option
- does nothing in documentation mode.
-
- single-comments
- When extracting comments from a file, take only one
- comment, discarding all preceding comments. This
- option is the reverse of the multi-comments option.
-
- sort-all
- Alphabetically sort all of the functions from all of
- the files before generating output.
-
- sort-by-files
- For each file processed, sort all of the functions
- prior to output.
-
- statics
-
- statics: none
-
- statics: any
-
- statics: only
- Select the method for how static functions should be
- treated. If "none" is selected, statics will be
- ignored. If "only" is selected, non-static functions
- will be ignored. Finally, "any" indicates that all
- functions will be extracted. If no selection is made,
- it will be the same as selecting "any" or (with a
- preceding `!') "none".
-
- tab-width: width
- Set the tab width to be an integer number width. This
- works only during documentation generation.
-
- undefine: name
- Undefine any previously defined macro. If none is
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- CEXTRC(5) FILE FORMATS CEXTRC(5)
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-
-
- encountered, pass the specified expression to the C
- preprocessor with a "-U" string prepended to it. This
- command is equivalent to the `-U' command-line option.
-
- wrap-parameters: #
- If the length of the parameter list for a function
- would cause it to exceed a given number of columns [72
- by default], a newline will be inserted in place of a
- space character, so that the function will not exceed
- that given length. The optional number after the com-
- mand will override a negation prefix if encountered.
-
- FILES
- /usr/local/lib/cext.config, $HOME/.cextrc, .cextrc
- configuration files.
-
- VMS
- Configuration files are also supported under VMS. The
- default configuration files for VMS systems are
- sys$library:cext.cnf, sys$login:cext.cnf, and cext.cnf.
-
- Since the VMS C compiler strips out comments, the documenta-
- tion mode and comment options are not very useful. Using
- the GNU C preprocessor instead might be a possible solution.
-
- SEE ALSO
- cextract(1), cextdoc(1)
-
- AUTHOR
- Adam Bryant
- adb@bu.edu
-
- initial VMS port by John Carr
- jrcarr@iup.bitnet
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