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cmdWhatis.c
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cmdWhatis.c
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/*****
** ** Module Header ******************************************************* **
** **
** Modules Revision 3.0 **
** Providing a flexible user environment **
** **
** File: cmdWhatis.c **
** First Edition: 1995/12/31 **
** **
** Authors: Jens Hamisch, jens@Strawberry.COM **
** R.K. Owen, <rk@owen.sj.ca.us> or <rkowen@nersc.gov> **
** **
** Description: The Tcl module-verbose routine allows switchin ver- **
** bosity on and off during module file execution **
** **
** Exports: cmdModuleWhatis **
** cmdModuleWhatisInit **
** cmdModuleWhatisShut **
** **
** Notes: **
** **
** ************************************************************************ **
****/
/** ** Copyright *********************************************************** **
** **
** Copyright 1991-1994 by John L. Furlan. **
** see LICENSE.GPL, which must be provided, for details **
** **
** ************************************************************************ **/
static char Id[] = "@(#)$Id$";
static void *UseId[] = { &UseId, Id };
/** ************************************************************************ **/
/** HEADERS **/
/** ************************************************************************ **/
#include "modules_def.h"
/** ************************************************************************ **/
/** LOCAL DATATYPES **/
/** ************************************************************************ **/
/** not applicable **/
/** ************************************************************************ **/
/** CONSTANTS **/
/** ************************************************************************ **/
#define WHATIS_FRAG 100
/** ************************************************************************ **/
/** MACROS **/
/** ************************************************************************ **/
/** not applicable **/
/** ************************************************************************ **/
/** LOCAL DATA **/
/** ************************************************************************ **/
static char module_name[] = __FILE__;
/**
** The whatis array ...
**/
char **whatis = (char **) NULL;
static int whatis_size = 0, whatis_ndx = 0;
/** ************************************************************************ **/
/** PROTOTYPES **/
/** ************************************************************************ **/
/** not applicable **/
/*++++
** ** Function-Header ***************************************************** **
** **
** Function: cmdModuleWhatis **
** **
** Description: Callback function for 'verbose' **
** **
** First Edition: 1995/12/31 **
** **
** Parameters: ClientData client_data **
** Tcl_Interp *interp According Tcl interp.**
** int objc Number of arguments **
** Tcl_Obj *objv[] Argument array **
** **
** Result: int TCL_OK Successful completion **
** TCL_ERROR Any error **
** **
** Attached Globals: sw_verbose The verbose level selector **
** g_flags These are set up accordingly before **
** this function is called in order to **
** control everything **
** **
** ************************************************************************ **
++++*/
int cmdModuleWhatis(
ClientData client_data,
Tcl_Interp * interp,
int objc,
Tcl_Obj * CONST84 objv[]
) {
int i = 1;
/**
** Help mode
**/
if (g_flags & M_HELP)
return (TCL_OK); /** -------- EXIT (SUCCESS) -------> **/
/**
** Parameter check
**/
if (objc < 2) {
if (OK !=
ErrorLogger(ERR_USAGE, LOC, Tcl_GetString(objv[0]),
" string", NULL))
return (TCL_ERROR);
/** -------- EXIT (FAILURE) -------> **/
}
/**
** If we don't have any whatis list buffer until now, we will create one
**/
if (!whatis) {
whatis_size = WHATIS_FRAG;
if ((char **)NULL
== (whatis = module_malloc(whatis_size * sizeof(char *)))) {
ErrorLogger(ERR_ALLOC, LOC, NULL);
return (TCL_ERROR);
/** -------- EXIT (FAILURE) -------> **/
}
}
/**
** Display mode?
**/
if (g_flags & M_DISPLAY) {
fprintf(stderr, "%s\t ", Tcl_GetString(objv[0]));
for (i = 1; i < objc; i++)
fprintf(stderr, "%s ", Tcl_GetString(objv[i]));
fprintf(stderr, "\n");
return (TCL_OK); /** ------- EXIT PROCEDURE -------> **/
}
/**
** Check if printing is requested
**/
if (g_flags & M_WHATIS) {
while (i < objc) {
/**
** Conditionally we have to enlarge our buffer
**/
while (whatis_ndx + 2 >= whatis_size) {
whatis_size += WHATIS_FRAG;
if (!(whatis = module_realloc(whatis,
whatis_size * sizeof(char *)))) {
ErrorLogger(ERR_ALLOC, LOC, NULL);
return (TCL_ERROR);
/** -------- EXIT (FAILURE) -------> **/
}
}
/**
** Put the string on the buffer
**/
if (!(whatis[whatis_ndx++]
= stringer(NULL, 0, Tcl_GetString(objv[i++]), NULL))) {
if (OK != ErrorLogger(ERR_ALLOC, LOC, NULL))
return (TCL_ERROR);
whatis_ndx--;
}
} /** while **/
} /** if **/
/**
** Put a trailing terminator on the buffer
**/
whatis[whatis_ndx] = (char *)NULL;
return (TCL_OK);
} /** End of 'cmdModuleWhatis' **/
/*++++
** ** Function-Header ***************************************************** **
** **
** Function: cmdModuleWhatisInit **
** cmdModuleWhatisShut **
** **
** Description: Initialization of internat data structures for the **
** Module whatis command **
** **
** First Edition: 1995/12/31 **
** **
** Parameters: - **
** **
** Result: - **
** **
** ************************************************************************ **
++++*/
void cmdModuleWhatisInit()
{
whatis_ndx = 0;
} /** End of 'cmdModuleWhatisInit' **/
void cmdModuleWhatisShut()
{
char **ptr = whatis;
if( whatis) {
while(*ptr) { /** go until NULL token **/
null_free((void *) ptr);
ptr++;
}
whatis_ndx = 0;
}
} /** End of 'cmdModuleWhatisShut' **/