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genargs - C program generator, R Heathfield, January 2000

Usage:
genargs [-internal] infile outfile logfile helpfile

Purpose: creates a C program with
         primitive argv checking

   -internal: optional switch. If
              specified, generates
              an application function.

   infile:    specifies the arguments
              expected by the program,
              using the grammar detailed below.

   outfile:   filename in which to store output.

   logfile:   parse errors recorded here.

   helpfile:  used for writing Help() function,
              displayed when args are incorrect.

--- infile grammar ---

infile:
  specifier
  infile specifier

specifier: one of
  switchspecifier
  doublespecifier
  longspecifier
  stringspecifier

switchspecifier:
  -identifier

doublespecifier:
  identifier D

longspecifier:
  identifier L

stringspecifier:
  identifier S length

identifier:
  letter
  identifiertail letter
  
identifiertail:
  letterorunderscore identifiertail
  digit identifiertail
  letterorunderscore
  digit
  
letterorunderscore:
  letter
  _

letter: one of
  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
  a b c d e f g h i j k l m n o p q r s t u v w x y z

digit: one of
  0 1 2 3 4 5 6 7 8 9

length:
  1 to 255