commands/yap/getline.h

   1 /* Copyright (c) 1985 Ceriel J.H. Jacobs */
   2
   3 /* $Header$ */
   4
   5 # ifndef _GETLINE_
   6 # define PUBLIC extern
   7 # else
   8 # define PUBLIC
   9 # endif
  10
  11 char *  getline();
  12 /*
  13  * char * getline(ln,disable_interrupt)
  14  * long ln;                     The line number of the line to be returned
  15  * int disable_interrupt;       1 if interrupts must be ignored, 0 otherwise
  16  *
  17  * Returns a pointer to the line with linenumber "ln".
  18  * It returns 0 if
  19  * - there was an interrupt, and interrupts were not disabled, or
  20  * - there is no line with linenumber "ln".
  21  */
  22
  23 char *  alloc();
  24 /*
  25  * char * alloc(size, isblock)
  26  * unsigned size;               The size in bytes
  27  * int isblock;                 Flag indicating whether this is a file-text
  28  *                              block
  29  *
  30  * Return a pointer to a block of "size" bytes.
  31  * Panics if no core can be found.
  32  */
  33
  34 VOID    do_clean();
  35 /*
  36  * void do_clean()
  37  *
  38  * Cleans up and initializes.
  39  */
  40
  41 VOID    cls_files();
  42 /*
  43  * void cls_files()
  44  *
  45  * Closes files. Useful for shell escapes.
  46  */
  47
  48 int     getch();
  49 /*
  50  * int getch()
  51  *
  52  * Get a character from input or command option line (only at start up).
  53  * Some systems allow us to do some workahead while the user is
  54  * thinking/reading. Use this to get parts of the input file in core.
  55  */
  56
  57 long    to_lastline();
  58 /*
  59  * long to_lastline()
  60  *
  61  * Finds the last line of the file, and returns its number.
  62  * This command can be interrupted, in which case it returns 0.
  63  */
  64
  65 long    getpos();
  66 /*
  67  * long getpos(line);
  68  *
  69  * get offset of line "line" in the input
  70  */
  71 # undef PUBLIC