common/cut.h

   1 /*-
   2  * Copyright (c) 1991, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * %sccs.include.redist.c%
   6  *
   7  *      $Id: cut.h,v 8.8 1993/11/19 11:55:04 bostic Exp $ (Berkeley) $Date: 1993/11/19 11:55:04 $
   8  */
   9
  10 typedef struct _texth TEXTH;            /* TEXT list head structure. */
  11 CIRCLEQ_HEAD(_texth, _text);
  12
  13 /* Cut buffers. */
  14 struct _cb {
  15         LIST_ENTRY(_cb) q;              /* Linked list of cut buffers. */
  16         TEXTH    textq;                 /* Linked list of TEXT structures. */
  17         CHAR_T   name;                  /* Cut buffer name. */
  18         size_t   len;                   /* Total length of cut text. */
  19
  20 #define CB_LMODE        0x01            /* Cut was in line mode. */
  21         u_char   flags;
  22 };
  23
  24 /* Lines/blocks of text. */
  25 struct _text {                          /* Text: a linked list of lines. */
  26         CIRCLEQ_ENTRY(_text) q;         /* Linked list of text structures. */
  27         char    *lb;                    /* Line buffer. */
  28         size_t   lb_len;                /* Line buffer length. */
  29         size_t   len;                   /* Line length. */
  30
  31         /* These fields are used by the vi text input routine. */
  32         recno_t  lno;                   /* 1-N: line number. */
  33         size_t   ai;                    /* 0-N: autoindent bytes. */
  34         size_t   insert;                /* 0-N: bytes to insert (push). */
  35         size_t   offset;                /* 0-N: initial, unerasable bytes. */
  36         size_t   owrite;                /* 0-N: bytes to overwrite. */
  37
  38         /* These fields are used by the ex text input routine. */
  39         u_char  *wd;                    /* Width buffer. */
  40         size_t   wd_len;                /* Width buffer length. */
  41 };
  42
  43 #define DEFCB   '1'                     /* Buffer '1' is the default buffer. */
  44
  45 /*
  46  * Get named buffer 'name'.
  47  * Translate upper-case buffer names to lower-case buffer names.
  48  */
  49 #define CBNAME(sp, cbp, name) {                                         \
  50         name = isupper(name) ? tolower(name) : (name);                  \
  51         for (cbp = sp->gp->cutq.lh_first;                               \
  52             cbp != NULL; cbp = cbp->q.le_next)                          \
  53                 if (cbp->name == name)                                  \
  54                         break;                                          \
  55 }
  56
  57 /* Get a cut buffer, and check to see if it's empty. */
  58 #define CBEMPTY(sp, cbp, name) {                                        \
  59         CBNAME(sp, cbp, name);                                          \
  60         if (cbp == NULL) {                                              \
  61                 if ((name) == '1')                                      \
  62                         msgq(sp, M_ERR,                                 \
  63                             "The default buffer is empty.");            \
  64                 else                                                    \
  65                         msgq(sp, M_ERR,                                 \
  66                             "Buffer %s is empty.", charname(sp, name)); \
  67                 return (1);                                             \
  68         }                                                               \
  69 }
  70
  71 int      cut __P((SCR *, EXF *, ARG_CHAR_T, MARK *, MARK *, int));
  72 int      delete __P((SCR *, EXF *, MARK *, MARK *, int));
  73 int      put __P((SCR *, EXF *, ARG_CHAR_T, MARK *, MARK *, int));
  74 void     text_free __P((TEXT *));
  75 TEXT    *text_init __P((SCR *, const char *, size_t, size_t));
  76 void     text_lfree __P((TEXTH *));