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cdk_util(3)			  Library calls 		     cdk_util(3)

NAME
     cdk_util - Cdk utility functions

SYNOPSIS
     cc [ flag ... ] file ...  -lcdk [ library ... ]

     #include <cdk.h>

     int CDKchdir (
		    const char *directory);

     int CDKgetDirectoryContents (
		    const char *directory,
		    char ***list);

     int CDKopenFile (
		    const char *filename,
		    char *mode);

     int CDKreadFile (
		    const char *filename,
		    char ***info);

     void alignxy (
		    WINDOW *window,
		    int *xpos,
		    int *ypos,
		    int boxWidth,
		    int boxHeight);

     chtype *char2Chtype (
		    const char *string,
		    int *length,
		    int *align);

     EDisplayType char2DisplayType (
		    const char *string);

     int checkForLink (
		    const char *line,
		    char *filename);

     char *chtype2String (
		    const chtype *string);

     void deleteCursesWindow (
		    WINDOW *window);

     void enableCursesMarkup (
		    booleanflag);

     void eraseCursesWindow (
		    WINDOW *window);

     int getListIndex (
		    CDKSCREEN *screen,
		    const char *title,
		    CDK_CONST char **list,
		    int listSize,
		    boolean numbers);

     char *getString (
		    CDKSCREEN *screen,
		    const char *title,
		    const char *label,
		    const char *init);

     int justifyString (
		    int fieldWidth,
		    int mesglen,
		    int justify);

     int mode2Filetype (
		    mode_t fileMode);

     void moveCursesWindow (
		    WINDOW *window,
		    int xdiff,
		    int ydiff);

     int popupDialog (
		    CDKSCREEN *screen,
		    CDK_CONST char **mesg,
		    int mesgCount,
		    CDK_CONST char **buttons,
		    int buttonCount);

     void popupLabel (
		    CDKSCREEN *win,
		    CDK_CONST char **mesg,
		    int count);

     void popupLabelAttrib (
		    CDKSCREEN *win,
		    CDK_CONST char **mesg,
		    int count,
		    chtype attribute);

     char *selectFile (
		    CDKSCREEN *screen,
		    const char *title);

     int setWidgetDimension (
		    int parentDim,
		    int proposedDim,
		    int adjustment);

     void stripWhiteSpace (
		    EStripType stripType,
		    char *string);

     int viewFile (
		    CDKSCREEN *screen,
		    const char *title,
		    const char *filename,
		    CDK_CONST char **buttons,
		    int buttonCount);

     int viewInfo (
		    CDKSCREEN *screen,
		    const char *title,
		    CDK_CONST char **info,
		    int size,
		    CDK_CONST char **buttons,
		    int buttonCount,
		    boolean interpret);

DESCRIPTION
     These  are  utility functions that one may use to initialize, build or cus-
     tomize widgets.

AVAILABLE FUNCTIONS
     CDKchdir
	  Change working directory to the given path, possibly	expanding  tilde
	  (~) and wildcards (*).  It returns zero on success.

     CDKgetDirectoryContents
	  opens and reads the contents of the given directory, filling the array
	  list with the sorted contents of the directory.  If the directory can-
	  not be opened then it returns a value of -1.

     CDKopenFile
	  Open the file, possibly expanding tilde (~) and wildcards (*).  It re-
	  turns a FILE pointer.

     CDKreadFile
	  Read the file filename, load the contents into a dynamically allocated
	  array,  storing  its address via info.  It returns the number of lines
	  read if the file could be opened, -1 otherwise.

     alignxy
	  Aligns a box on the given window with the height and width given.  See
	  cdk_position (3) for the interpretation of the  xpos,  ypos,	boxWidth
	  and boxHeight, parameters.

     char2Chtype
	  Translate  a	character  string with embedded HTML-like format markers
	  (e.g., "</X/Y>Blah Blah") to a null-terminated array of chtype's.

	  *   The length of the array is stored via the length parameter.

	  *   The align parameter contains justification information (LEFT, CEN-
	      TER, RIGHT).

	      The caller is responsible for freeing the result.

	  See cdk_display(3) for details on formatting.

     char2DisplayType
	  Lookup the given name in string  and	return	the  equivalent  display
	  type.  See also cdk_display(3).

     checkForLink
	  Check if the given line is of the form
	  <F=filename>

	  If  so, extract the filename from the line, storing it in the filename
	  buffer (which must hold  at  least  CDK_PATHMAX  characters).   Return
	  nonzero if a filename is extracted.

     chtype2String
	  Extract  the	characters and formatting information from a null-termi-
	  nated array of chtype's string.  A dynamically allocated string is re-
	  turned.

	  See cdk_display(3) for details on Cdk's formatting.

	  In addition, this function supports  a  feature  needed  to  represent
	  multi-line  title  strings  returned by getCdkTitle (see cdk_objs(3)).
	  Each newline separating lines in the title is represented  by  "<#10>"
	  to allow Cdk to display the string in a text field.

     deleteCursesWindow
	  Safely  delete a given window, i.e., first check if the window parame-
	  ter is nonnull.

     enableCursesMarkup
	  Normally Cdk checks for HTML-like markup in character strings which it
	  translates to curses strings with char2Chtype.  Use this  function  to
	  disable the feature temporarily.

     eraseCursesWindow
	  Safely erase a given window, i.e., first check if the window parameter
	  is nonnull.

     getListIndex
	  Display  a  scrollable  list of strings in a dialog, allow the user to
	  select one.  Return the index in the list of the value selected.

	  *   The list parameter contains the  strings	to  display;  there  are
	      listSize strings in the list.

	  *   If numbers is true, the displayed list items will be numbered.

     getString
	  pops up an entry widget with

	  *   a title supplied by the value of the title parameter,

	  *   a label supplied by the label parameter, and

	  *   an initial value supplied by the initialValue parameter.

	  It  returns  a pointer to the value typed in or NULL if the widget was
	  exited early.

     justifyString
	  Given a string length mesglen, the available	field  width  fieldWidth
	  and  a  justification type justify, return the number of characters by
	  which to shift the string.

     mode2Filetype
	  Given a file protection mode fileMode, return ignoring  the  file-type
	  bits, i.e., ignoring the corresponding permissions data.

     moveCursesWindow
	  Move a given window by the amounts in xdiff and ydiff.

     popupDialog
	  creates a quick pop-up dialog box.  Pass in

	  *   the message in the mesg parameter,

	  *   the size of the message in the mesgCount parameter,

	  *   the button labels in the buttons parameter and

	  *   the number of buttons in the buttonCount parameter.

	  The dialog box will be centered on the screen.

     popupLabel
	  creates a quick pop-up label widget.

	  The message and the size of the message are passed in via the mesg and
	  count parameters respectively.

	  The label widget waits until the user hits a character and is centered
	  on the screen.

     popupLabelAttrib
	  Display  a  simple  dialog  with a list of count message strings mesg.
	  Use the given attribute for the background of the dialog.

     selectFile
	  Display a file-selection dialog.  Return  the  selected  filename,  or
	  null if none is selected.  The caller should free the return-value.

     setWidgetDimension
	  This is a helper function used to set the height/width of a widget:

	  *   If  the proposed dimension proposedDim is FULL or zero, the return
	      value will be parentDim.

	  *   If the proposed dimension proposedDim is positive,

	      *   and it is larger than parentDim, return proposedDim,

	      *   otherwise return proposedDim plus adjustment.

	  *   If the proposed dimension  proposedDim  is  negative,  the  return
	      value will be parentDim plus proposedDim.

	  *   Otherwise, the return value will be proposedDim.

     stripWhiteSpace
	  Strip whitespace from the front and/or back of the given string.

	  The  stripType  parameter controls the type of stripping done: vFRONT,
	  vBACK or vBOTH.

     viewFile
	  Read the file specified by filename and display it in a CDKVIEWER win-
	  dow.	The title, buttons and buttonCount are applied to the  CDKVIEWER
	  window.

	  *   The viewer shows the contents of the file supplied by the filename
	      value.

	  *   The buttons on the file viewer are supplied by the buttons parame-
	      ter.

	  It  returns  the  index of the button selected, or -1 if the file does
	  not exist or if the widget was exited early.

	     +-----------------+-------------------------------------+
	     | Strip_Type      | Result 			     |
	     +-----------------+-------------------------------------+
	     +-----------------+-------------------------------------+
	     | vFRONT	       | This tells the function  to  remove |
	     |		       | all  of  the  white  space from the |
	     |		       | front of the given string.	     |
	     +-----------------+-------------------------------------+
	     | vBACK	       | This tells the function  to  remove |
	     |		       | all  of  the  white  space from the |
	     |		       | back of the given string.	     |
	     +-----------------+-------------------------------------+
	     | vBOTH	       | This tells the function  to  remove |
	     |		       | all  of  the  white space from both |
	     |		       | the front and the back of the given |
	     |		       | string.			     |
	     +-----------------+-------------------------------------+

     viewInfo
	  Display the list of strings in info in a CDKVIEWER window.  The number
	  of strings is given by size.	The title, buttons and	buttonCount  are
	  applied to the CDKVIEWER window.

SEE ALSO
     cdk_dialog(3), cdk_display(3), cdk_misc(3), cdk_objs(3), cdk_position(3).

				   2025-01-14			     cdk_util(3)

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