//  @(#)input.hh 1.2 93/08/01
//
//  Contains definitions for class "Input".
//
//  Copyright (c) Steve Holden and Rich Burridge.
//                All rights reserved.
//
//  Permission is given to distribute these sources, as long as the
//  copyright messages are not removed, and no monies are exchanged.
//
//  No responsibility is taken for any errors or inaccuracies inherent
//  either to the comments or the code of this program, but if
//  reported to me then an attempt will be made to fix them.

#define  MAXHDRS      64     // Maximum number of -addhdr or -remhdr options.
#define  MAXLINE      256    // Maximum string length.
#define  MAXNAMES     512    // Maximum number of files from command line.
#define  NAMEFIELDS   3      // Default no. of "words" from passwd gecos.
#define  NAMELENGTH   40     // Maximum allowable real user name.

#ifndef  MAXPATHLEN
#define  MAXPATHLEN   1024
#endif // MAXPATHLEN

#ifndef  PROLOGUE                             // PostScript prologue file.
#define  PROLOGUE          "/usr/local/lib"
#endif // PROLOGUE

#define  PRO_FILOFAX       "mp.pro.ff.ps"
#define  PRO_FRANKLIN      "mp.pro.fp.ps"
#define  PRO_LANDSCAPE     "mp.pro.l.ps"
#define  PRO_NORMAL        "mp.pro.ps"
#define  PRO_OTHER         "other"
#define  PRO_TIME_MANAGER  "mp.pro.tm.ps"
#define  PRO_TIME_SYSTEM   "mp.pro.ts.ps"

typedef enum { DO_MAIL, DO_NEWS, DO_TEXT } document_type ;

class Input {
  public:

  char *addhdrs[MAXHDRS] ;       // List of additional headers to be printed.
  char *hdrs[MAXHDRS] ;          // Contents of additional headers.
  char *namelist[MAXNAMES] ;     // List of file names from argv.
  char nextline[MAXLINE] ;       // Read-ahead of the mail message, minus nl.
  char *owner ;                  // Name of owner (usually equal to 'to')
  char *progname ;               // Name of this program.
  char *prologue ;               // Name of PostScript prologue file.
  char proname[MAXPATHLEN] ;     // Full pathname of the prologue file.
  char *ptype ;                  // Prologue type.
  char *remhdrs[MAXHDRS] ;       // List of headers not to be printed.
  char *whoami ;                 // Login name of user.

// Command line option flags.

  int article ;              // Set for news in "Article from " format.
  int banner ;               // Print a burst page on the printer?
  int content ;              // Set if Content-Length: has message length.
  int digest ;               // Are we are printing a mail digest.
  int elm_if ;               // ELM mail frontend intermediate file format.
  int folder ;               // Set if we are printing a mail folder.
  int landscape ;            // Set if we are printing in landscape mode.
  int llen ;                 // Number of characters per line.
  int modtime ;              // If set, use last modification time.
  int number ;               // If set, than number each output line.
  int numcols ;              // Number of columns per page.
  int plen ;                 // Number of lines per page.
  int print_orig ;           // Print From rather than To in mail header.
  int print_ps ;             // Print PostScript files if set.
  int text_doc ;             // Printing normal text.
  int toprinter ;            // Send output to the printer?
  int wrapwords ;            // Wrap words of output.

  int end_of_file ;          // EOF indicator.
  int end_of_line ;          // Is a newline removed from this line.
  int end_of_page ;          // end-of-page indicator - ^L on input.

  int cols_given ;           // Was "-columns    #" command line option given?
  int llen_given ;           // Was "-linelength #" command line option given?
  int plen_given ;           // Was "-pagelength #" command line option given?

  int addhdr_num ;           // Number of additional header lines to print.
  int clen ;                 // Current line length (including newline).
  int linenum ;              // Current line number from input file.
  int mlen ;                 // Number of characters in message (-C option).
  int namefields ;           // Number of "words" from passwd gecos.
  int namelength ;           // Maximum # of chars. from passwd gecos.
  int numnames ;             // Number of file names from command line.
  int remhdr_num ;           // Number of additional header lines not to print.

  document_type doc_type ;   // Printing type - default mail.

  FILE *ifp ;                // Input file pointer for current file.

       Input              () ;
  void get_options        (int, char **) ;
  void init_setup         (void) ;
  void readline           (void) ;

  private:

  char iobuf[MAXLINE] ;      // Overflow buffer when -wrap is used.
  char *nameptr ;            // Used to getenv the NAME variable.

  int cpos ;                 // Current column position for usage output.
  int overflow ;             // # of chars of text wraparound if -wrap.
  int tabsize ;              // Number of spaces in a tab character.

  int  argcmp             (char *, char *, int) ;
  void get_hdr_arg        (char *, char **, int *) ;
  void process_name_field (char *, char *, int, int) ;
  void usage              (void) ;
  void usageoption        (char *) ;
} ;