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Diff for /src/usr.bin/mg/file.c between version 1.8 and 1.9

version 1.8, 2001/05/23 22:36:14 version 1.9, 2001/05/24 03:05:22
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 }  }
   
 /*  /*
  * Select a file for editing.  Look around to see if you can find the file   * Select a file for editing.  Look around to see if you can find the file
  * in another buffer; if you can find it, just switch to the buffer.  If   * in another buffer; if you can find it, just switch to the buffer.  If
  * you cannot find the file, create a new buffer, read in the text, and   * you cannot find the file, create a new buffer, read in the text, and
  * switch to the new buffer.   * switch to the new buffer.
  */   */
 /* ARGSUSED */  /* ARGSUSED */
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 }  }
   
 /*  /*
  * Read the file "fname" into the current buffer.  Make all of the text   * Read the file "fname" into the current buffer.  Make all of the text
  * in the buffer go away, after checking for unsaved changes.  This is   * in the buffer go away, after checking for unsaved changes.  This is
  * called by the "read" command, the "visit" command, and the mainline   * called by the "read" command, the "visit" command, and the mainline
  * (for "uemacs file").   * (for "uemacs file").
  */   */
 int  int
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  */   */
   
 /*  /*
  * Insert a file in the current buffer, after dot.  Set mark at the end of   * Insert a file in the current buffer, after dot.  Set mark at the end of
  * the text inserted; point at the beginning.  Return a standard status.   * the text inserted; point at the beginning.  Return a standard status.
  * Print a summary (lines read, error message) out as well.  If the BACKUP   * Print a summary (lines read, error message) out as well.  If the BACKUP
  * conditional is set, then this routine also does the read end of backup   * conditional is set, then this routine also does the read end of backup
  * processing.  The BFBAK flag, if set in a buffer, says that a backup   * processing.  The BFBAK flag, if set in a buffer, says that a backup
  * should be taken.  It is set when a file is read in, but not on a new   * should be taken.  It is set when a file is read in, but not on a new
  * file.  (You don't need to make a backup copy of nothing.)   * file.  (You don't need to make a backup copy of nothing.)
  */   */
 static char    *line = NULL;  static char     *line = NULL;
 static int      linesize = 0;  static int      linesize = 0;
   
 int  int
 insertfile(fname, newname, needinfo)  insertfile(fname, newname, needinfo)
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                         break;                          break;
                 case FIOLONG:{                  case FIOLONG:{
                                 /* a line too long to fit in our buffer */                                  /* a line too long to fit in our buffer */
                                 char           *cp;                                  char    *cp;
                                 int             newsize;                                  int     newsize;
   
                                 newsize = linesize * 2;                                  newsize = linesize * 2;
                                 if (newsize < 0 ||                                  if (newsize < 0 ||
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                                 bcopy(line, cp, linesize);                                  bcopy(line, cp, linesize);
                                 free(line);                                  free(line);
                                 line = cp;                                  line = cp;
                                 s = ffgetline(line + linesize, linesize,                                  s = ffgetline(line + linesize, linesize,
                                     &nbytes);                                      &nbytes);
                                 nbytes += linesize;                                  nbytes += linesize;
                                 linesize = newsize;                                  linesize = newsize;
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 }  }
   
 /*  /*
  * Ask for a file name and write the contents of the current buffer to that   * Ask for a file name and write the contents of the current buffer to that
  * file.  Update the remembered file name and clear the buffer changed flag.   * file.  Update the remembered file name and clear the buffer changed flag.
  * This handling of file names is different from the earlier versions and   * This handling of file names is different from the earlier versions and
  * is more compatable with Gosling EMACS than with ITS EMACS.   * is more compatable with Gosling EMACS than with ITS EMACS.
  */   */
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 #ifndef MAKEBACKUP  #ifndef MAKEBACKUP
 #define MAKEBACKUP TRUE  #define MAKEBACKUP TRUE
 #endif /* !MAKEBACKUP */  #endif /* !MAKEBACKUP */
 static int      makebackup = MAKEBACKUP;  static int      makebackup = MAKEBACKUP;
 #endif /* !NO_BACKUP */  #endif /* !NO_BACKUP */
   
 /* ARGSUSED */  /* ARGSUSED */
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 }  }
   
 /*  /*
  * Save the contents of the buffer argument into its associated file.  Do   * Save the contents of the buffer argument into its associated file.  Do
  * nothing if there have been no changes (is this a bug, or a feature?).   * nothing if there have been no changes (is this a bug, or a feature?).
  * Error if there is no remembered file name. If this is the first write   * Error if there is no remembered file name. If this is the first write
  * since the read or visit, then a backup copy of the file is made.   * since the read or visit, then a backup copy of the file is made.
  * Allow user to select whether or not to make backup files by looking at   * Allow user to select whether or not to make backup files by looking at
  * the value of makebackup.   * the value of makebackup.
  */   */
 int  int
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                 if (s == ABORT)                  if (s == ABORT)
                         return FALSE;                          return FALSE;
                 /* softer error */                  /* softer error */
                 if (s == FALSE &&                  if (s == FALSE &&
                     (s = eyesno("Backup error, save anyway")) != TRUE)                      (s = eyesno("Backup error, save anyway")) != TRUE)
                         return s;                          return s;
         }          }
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  */   */
   
 /*  /*
  * This function performs the details of file writing; writing the file   * This function performs the details of file writing; writing the file
  * in buffer bp to file fn. Uses the file management routines in the   * in buffer bp to file fn. Uses the file management routines in the
  * "fileio.c" package. Most of the grief is checking of some sort.   * "fileio.c" package. Most of the grief is checking of some sort.
  */   */
 int  int
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  Added in v.1.9