There's finally a standard way to read arguments from a command-line execution of a Fortran program. But this little library goes much further and lets you define and crack a Unix-like syntax very easily.

Problems with GET_COMMAND(3f)

At the time I wrote this, there were issues with GET_COMMAND(3f); so I use GET_COMMAND_ARGUMENTS(3f) to do what I want GET_COMMAND(3f) for. Caveat emptor.

Using new features in 2003/2008 Fortran such as reading NAMELIST groups from internal files and GET_COMMAND_ARGUMENT(3f), crack command line options using a standardized syntax and the least code.

If you want to allow simple expressions in your input instead of just numeric values the JUEXPR(3f) routine can provide a robust solution.

Acting much like a line-mode editor, the JUCMD(3f) routine lets you list, edit, save, and modify your interactively entered program input. Built-in help and no dependence on terminal control sequences makes this a simple-to-master and portable input history editor.

A simple utility to detect numeric differences in values when porting to new compilers

A simple C routine for most Unix systems that immediately reads a single character keystroke from the keyboard.

A FORTRAN 77 procedure for making large block letters

  JJJJJJJJ UU      UU BBBBBBBBB  IIIIIIIIII  GGGGGGGG  
  JJJJJJJJ UU      UU BBBBBBBBBB IIIIIIIIII GGGGGGGGGG 
     JJ    UU      UU BB      BB     II     GG         
     JJ    UU      UU BB      BB     II     GG         
     JJ    UU      UU BBBBBBBBB      II     GG   GGGGG 
     JJ    UU      UU BBBBBBBBB      II     GG   GGGGG 
JJ   JJ    UU      UU BB      BB     II     GG      GG 
JJ   JJ    UU      UU BB      BB     II     GG      GG 
JJJJJJJ    UUUUUUUUUU BBBBBBBBBB IIIIIIIIII GGGGGGGGGG 
 JJJJJ      UUUUUUUU  BBBBBBBBB  IIIIIIIIII  GGGGGGGGG 
     

A C program called asa2pdf(1) converts ASCII text files using ASA carriage control into Adobe PDF files. It emulates an old 15-inch impact printer (pages are landscape, 132 columns wide, 60 lines, every other two lines shaded).

A program that converts between ASCII text files that have GNU/Unix line terminators and MSWindows line terminators illustrates the use of stream I/O using Fortran 2003.

The strtok(3f) routine returns one token at a time from an input line, parsing it in a manner similar to the C routine strtok(3c) .

The jutabs(3f) routine expands tabs on an input line, assuming the tab breaks are set every eight columns.

I needed a command that would print the current environmental table as setenv(1) commands so it could easily be read back into csh(1) and tcsh(1) shells.

This is a line editor in C reminiscent of the CDC NOS XEDIT editor; with extensions

Long long ago, a Fortran program allowed text input using a matrix-algebra like syntax; it was called MATLAB. This routine is nothing like the commercial application that has evolved with GUI interfaces and full-featured interpreters and sophisticated graphics; but it is still useful.

As permitted, other routines may appear here someday ...

   expression parsing functions

   standard self-describing files
   using SQLLite (databases), HDF5,
   XML, XDR routines, and other formats.
   
   checksums
   
   encryption
   
   fortran shells
   
   standard ways to build many libraries

   GUI building (calling fortran from 
   tcl/tk, curses, GLUT, X11 ...)
   
   high-level graphics routines that call
   the VOGLE graphics primitives
   
   examples of newer features of Fortran
   
   fortran-based regular expression routines

   hash tables

   advice about floating point
   
   steam table library ??

   traverse an XML file with "Unix" commands