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Man Pages


Manual Reference Pages  -  VGRIND (1)

NAME

vgrind - grind nice listings of programs

CONTENTS

Synopsis
Description
Files
See Also
History
Bugs

SYNOPSIS

vgrind [] [-W] [-d file] [-f] [-h header] [-llanguage] [-n] [-p postproc] [-s pointsize] [-t] [-x] name ...

DESCRIPTION

The vgrind utility formats the program sources specified as arguments on the command line in a nice style using troff(1). Comments are placed in italics, keywords in bold face, and the name of the current function is listed down the margin of each page as it is encountered.

The vgrind utility runs in two basic modes, filter mode (see the -f option) or regular mode. In filter mode vgrind acts as a filter in a manner similar to tbl(1). The standard input is passed directly to the standard output except for lines bracketed by the troff-like macros:
.vS starts processing
.vE ends processing

These lines are formatted as described above. The output from this filter can be passed to troff(1) for output. There need be no particular ordering with eqn(1) or tbl(1).

In regular mode vgrind accepts input files, processes them, and passes them to the postprocessor for output, psroff(1) by default.

In both modes vgrind passes any lines beginning with a decimal point without conversion.

The options are:
forces input to be taken from standard input (default if -f is specified)
-W forces output to the (wide) Versatec printer rather than the (narrow) Varian
-d file
  specifies an alternate language definitions file (default is /usr/share/misc/vgrindefs)
-f forces filter mode
-h header
  specifies a particular header to put on every output page (default is the file name)
-l specifies the language to use. Currently known are PASCAL (-lp), MODEL (-lm), C (-l c or the default), C++ (-lc++), CSH (-lcsh), SHELL (-lsh), RATFOR (-lr), MODULA2 (-lmod2), YACC (-lyacc), LISP (-lisp), ICON (-lI), and PERL (-lperl).
-n forces no keyword bolding
-p postproc
  use postproc to post-process the output, psroff(1) by default.
-s pointsize
  specifies a point size to use on output (exactly the same as the argument of a .ps)
-t similar to the same option in troff(1) causing formatted text to go to the standard output
-x outputs the index file in a ‘‘pretty’’ format. The index file itself is produced whenever vgrind is run with a file called index in the current directory. The index of function definitions can then be run off by giving vgrind the -x option and the file index as argument.

FILES

index file where source for index is created
/usr/share/tmac/tmac.vgrind macro package
/usr/libexec/vfontedpr preprocessor
/usr/share/misc/vgrindefs language descriptions

SEE ALSO

getcap(3), vgrindefs(5)

HISTORY

The vgrind command appeared in BSD 3.0 .

BUGS

The vfontedpr preprocessor assumes that a certain programming style is followed:

For C - function names can be preceded on a line only by spaces, tabs, or an asterisk. The parenthesized arguments must also be on the same line.

For PASCAL - function names need to appear on the same line as the keywords function or procedure.

For MODEL - function names need to appear on the same line as the keywords is beginproc.

If these conventions are not followed, the indexing and marginal function name comment mechanisms will fail.

More generally, arbitrary formatting styles for programs mostly look bad. The use of spaces to align source code fails miserably; if you plan to vgrind your program you should use tabs. This is somewhat inevitable since the font used by vgrind is variable width.

The mechanism of ctags(1) in recognizing functions should be used here.

Filter mode does not work in documents using the -me or -ms macros. (So what use is it anyway?)

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