Man Linux: Main Page and Category List


       lgrind - grind nice program listings using LaTeX


       This  man  page  is  not  yet  much  outdated, but might be soon except
       somebody asks me to work on it. Consider the LaTeX docs the real  docs.


       lgrind [ -e ] [ -i ] [ - ] [ -n ] [ -c ] [ -t <width> ] [ -h <header> ]
       [ -d <description file> ] [ -l<language> ] [ -s ] <name> ...


       LGrind  formats  program  sources  in  a  nice  style  using  LaTeX(1).
       Comments  are  placed  in  roman,  keywords  in bold face, variables in
       italics, and strings in  typewriter  font.  Source  file  line  numbers
       appear in the right margin (every 10 lines).

       LGrind  processes  its  input file(s) and writes the result to standard
       output.  This output can be saved for later editting,  inclusion  in  a
       larger document, etc.

       The options are:

       -e     process a LaTeX file for embedded code.

       -i     process source code file for inclusion in a LaTeX document.

       -      take input from standard input.

       -n     don’t boldface keywords.

       -c     don’t treat @, etc. specially in comments.

       -t     change tab width (default 8).

       -h     specifies text to go into the header.

       -d     specifies    the   language   definitions   file   (default   is

       -d!    same as above, but write patched executable.

       -l     specifies the language to use.

       -s     shows a list of currently known languages.

       If LGrind is called without parameters, a help screen  will  be  shown.
       If  neither -e nor -i are specified, a complete LaTeX file is produced.
       When no language is specified, LGrind tries to find  out  the  language
       used itself; C is used when this fails.


       For  example, to include a C file named foo.c into your LaTeX document,
       first give the command:

           lgrind -i -lc foo.c > foo.tex

       This will generate foo.tex, which will have the pretty-printed  version
       of foo.c with a lot of LaTeX commands.

       Then include lgrind.sty as you include any other style, namely with the
       \usepackage{lgrind} line at  the  beginning  of  your  LaTeX  document.
       Having done this, within the document you can include foo.tex using one
       of the following commands:

              which will simply include the file at that point  of  text,  and
              will draw horizontal lines before and after the listing.

              which  will  put  the  listing also within a figure environment,
              using the float options, caption and label you gave.

       To produce a standalone LaTeX file from, say, a Yacc file:

           lgrind -ly bary.y > bary.tex
              This uses Piet van Oostrum’s fancyhdr.sty to  make  the  headers
              and footers.

       For   a   more   detailed  explanation  of  these  commands,  refer  to


       (From Jerry Leichter’s notes.)

       Within the text of your LaTeX file, you mark groups of lines as  either
       text- or display-style program code:

       Text style:

           The expression
           a + 3
           produces 10.
       prints something like:  "The expression a + 3 produces 10."  (with "a +
       3" set as a program.)

       The same effect can be achieved with inline @’s.

           The expression @a + 3@ produces 10.

       Display style:

           The statement
           a += 3;
           is an example of an incrementing operator.
       prints something like:

           The statement
                 a += 3;
           is an example of an incrementing operator.

       Important rules:

              % and the following character must be the first  two  characters
              on the line to be recognized.

              Put  nothing  on the line after the % and the key character.  If
              you do that, LGrind will provide a default environment that will
              produce an \hbox for %( )%, and a \vbox for %[ - %].  If you put
              stuff on the line, LGrind assumes you want to control the format
              completely.   Doing this requires understanding exactly what the
              code LGrind produces is doing. (Sometimes I’m not sure I do!)

              %) and %] are, if I remember right, simply ignored outside of  a
              code  group,  but  any  extra  %( or %[ produces a warning, so a
              missing %) or %] is usually caught.

       You can insert your own code by using a line starting with  %=  in  the
       program  text.   Whatever  you  enter after that is left in the output,
       exactly as you typed it.  It will be executed in a strange environment,
       so doing anything fancy is very tricky.  A macro, \Line, is provided to
       help you do simple things.  For example,

               a = 1;

               a = 1;

       (Within the program text, _ is active  and  expands  to  a  fixed-width
       space.   A  whole  bunch of macros are also defined.  If you understand
       how LGrind sets lines up, you can replace the 8 _’s with a call to \Tab
       — but I’ll let you hang yourself on that one.)

       The  output  of LGrind always contains exactly one output line for each
       input line.  Hence, you can look up line numbers in TeX error  messages
       in  your  original  file, rather than in the lgrind’ed (lground?) file.
       (Of course, if the problem is in the LGrind output....)

       Many things are controllable by re-defining various  macros.   You  can
       change what fonts LGrind will use for various kinds of things, how much
       it indents the output, whether it adds line numbers, and if so at  what
       interval  it  prints  them  and  whether  it sticks them on the left or
       right, and so on.  This stuff is all described  in  lgrind.dvi,  though
       probably  not very well. The default settings produce output that looks
       reasonable to me, though I can’t say I’m ecstatic about  it.   Doing  a
       really good job would require defining some special fonts.




              LaTeX style file

              Language descriptions


       Van  Jacobson,  Lawrence Berkeley Laboratory (based on "vgrind" by Dave
       Presotto & William Joy of UC Berkeley), wrote it for TeX.

       Jerry Leichter of Yale University modified it for LaTeX.

       George V. Reilly of Brown University changed the name to lgrind,  fixed
       up  the  man  page,  and  added  the  program-text-within-comments  and
       @-within-LaTeX features.

       Michael Piefel of Humboldt-University Berlin adapted it to LaTeX2e  and
       wrote decent documentation.


       latex(1), tex(1), vgrind(1), lgrindef(5)