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/*
* resource.c
* Manage resources for gmemusage
*
* Copyright (C) 1997, 1998 by Raju Mathur.
* Lots of code and ideas shamelessly stolen from xlockmore-3.0/resource.c
*
* See file COPYING (included in this distribution) for copyright information.
*/
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xos.h>
#include <X11/Xresource.h>
#include <stdio.h>
#include <string.h>
#include <malloc.h>
#include <stdlib.h>
#include "common.h"
#include "defaults.h"
/*
* Built-in defaults
*/
#define DEF_FONT "fixed"
#define DEF_GEOMETRY "320x400"
#define DEF_NCOLORS "3"
#ifdef PASTEL_COLORS
#define DEF_COLOR1 "maroon"
#define DEF_COLOR2 "OliveDrab"
#define DEF_COLOR3 "SlateBlue"
#else
#define DEF_COLOR1 "red"
#define DEF_COLOR2 "green"
#define DEF_COLOR3 "blue"
#endif
#define DEF_COLOR4 ""
#define DEF_COLOR5 ""
#define DEF_COLOR6 ""
#define DEF_COLOR7 ""
#define DEF_COLOR8 ""
#define DEF_COLOR9 ""
#define DEF_FOREGROUND "black"
#define DEF_BACKGROUND "grey4"
#define DEF_UPDATE "5"
#define DEF_THRESHHOLD "400"
#define DEF_CLASSNAME "Gmemusage"
static XrmOptionDescRec optionTable [] =
{
{ "-geometry" , ".geometry" , XrmoptionSepArg , (caddr_t) NULL } ,
{ "-ncolors" , ".ncolors" , XrmoptionSepArg , (caddr_t) NULL } ,
{ "-color1" , ".color1" , XrmoptionSepArg , (caddr_t) NULL } ,
{ "-color2" , ".color2" , XrmoptionSepArg , (caddr_t) NULL } ,
{ "-color3" , ".color3" , XrmoptionSepArg , (caddr_t) NULL } ,
{ "-color4" , ".color4" , XrmoptionSepArg , (caddr_t) NULL } ,
{ "-color5" , ".color5" , XrmoptionSepArg , (caddr_t) NULL } ,
{ "-color6" , ".color6" , XrmoptionSepArg , (caddr_t) NULL } ,
{ "-color7" , ".color7" , XrmoptionSepArg , (caddr_t) NULL } ,
{ "-color8" , ".color8" , XrmoptionSepArg , (caddr_t) NULL } ,
{ "-color9" , ".color9" , XrmoptionSepArg , (caddr_t) NULL } ,
{ "-font" , ".font" , XrmoptionSepArg , (caddr_t) NULL } ,
{ "-foreground" , ".foreground" , XrmoptionSepArg , (caddr_t) NULL } ,
{ "-background" , ".background" , XrmoptionSepArg , (caddr_t) NULL } ,
{ "-update" , ".update" , XrmoptionSepArg , (caddr_t) NULL } ,
{ "-threshhold" , ".threshhold" , XrmoptionSepArg , (caddr_t) NULL } ,
} ;
const int
optionEntries = sizeof ( optionTable ) / sizeof ( optionTable [0] ) ;
static XrmOptionDescRec displayTable [] =
{
{ "-display" , ".display" , XrmoptionSepArg , (caddr_t) NULL }
} ;
const int
displayEntries = sizeof ( displayTable ) / sizeof ( displayTable [0] ) ;
static XrmOptionDescRec nameTable [] =
{
{ "-name" , ".name" , XrmoptionSepArg , (caddr_t) NULL }
} ;
const int
nameEntries = sizeof ( nameTable ) / sizeof ( nameTable [0] ) ;
/*
* Variables holding default values
*/
static char
*dName ;
char
*dGeometry ,
*dDisplay ,
*dFont ,
*dForeground ,
*dBackground ,
*dColor [MaxColors] ;
int
dnColors ,
dUpdate ,
dThreshhold ;
#define t_String 0
#define t_Int 1
typedef struct {
caddr_t *var;
char *name;
char *class;
char *def;
int type;
} argtype;
/*
* Warning! If you change anything here do also modify the Help function
* accordingly.
*/
static argtype optionVars[] = {
{ (caddr_t *) &dFont , "font" , "Font" , DEF_FONT , t_String } ,
{ (caddr_t *) &dGeometry , "geometry" , "Geometry" , DEF_GEOMETRY , t_String } ,
{ (caddr_t *) &dnColors , "ncolors" , "NColors" , DEF_NCOLORS , t_Int } ,
{ (caddr_t *) &dColor [0] , "color1" , "Color" , DEF_COLOR1 , t_String } ,
{ (caddr_t *) &dColor [1] , "color2" , "Color" , DEF_COLOR2 , t_String } ,
{ (caddr_t *) &dColor [2] , "color3" , "Color" , DEF_COLOR3 , t_String } ,
{ (caddr_t *) &dColor [3] , "color4" , "Color" , DEF_COLOR4 , t_String } ,
{ (caddr_t *) &dColor [4] , "color5" , "Color" , DEF_COLOR5 , t_String } ,
{ (caddr_t *) &dColor [5] , "color6" , "Color" , DEF_COLOR6 , t_String } ,
{ (caddr_t *) &dColor [6] , "color7" , "Color" , DEF_COLOR7 , t_String } ,
{ (caddr_t *) &dColor [7] , "color8" , "Color" , DEF_COLOR8 , t_String } ,
{ (caddr_t *) &dColor [8] , "color9" , "Color" , DEF_COLOR9 , t_String } ,
{ (caddr_t *) &dForeground , "foreground" , "Foreground" , DEF_FOREGROUND ,
t_String } ,
{ (caddr_t *) &dBackground , "background" , "Background" , DEF_BACKGROUND ,
t_String } ,
{ (caddr_t *) &dUpdate , "update" , "Interval" , DEF_UPDATE , t_Int } ,
{ (caddr_t *) &dThreshhold , "threshhold" , "Threshhold" , DEF_THRESHHOLD ,
t_Int } ,
} ;
const int
nVars = sizeof ( optionVars ) / sizeof ( optionVars [0] ) ;
/*
* Print out the help message. This'll need to be kept up-to-date as and when
* commandline options change.
*/
static void
Help ( void )
{
fprintf ( stderr , "gmemusage ver %s by Raju (OldMonk) Mathur\n"
"Usage: %s [options]\n"
"where options (defaults/resources in brackets) are:\n"
" -name resourcename Class name to use for resources (%s) (name)\n"
" -display display X server to contact ($DISPLAY) (display)\n"
" -geometry geometry Initial window geometry (%s) (geometry)\n"
" -font font Text font (%s) (font)\n"
" -background color Color to use for window background (%s) (background)\n"
" -update seconds Update interval (%s) (update)\n"
" -threshhold kb Threshhold to merge small processes (%s) (threshhold)\n"
" -ncolors ncolors How many colors to use (%s) (ncolors)\n"
" -color1 color color 1 (%s) (color1)\n"
" -color2 color color 2 (%s) (color2)\n"
" -color3 color color 3 (%s) (color3)\n"
" -color[4-9] color colors 4 to 9 (undefined) (color4-color9)\n"
" -help Print this message\n" ,
version , progname , DEF_CLASSNAME , DEF_GEOMETRY , DEF_FONT ,
DEF_BACKGROUND , DEF_UPDATE , DEF_THRESHHOLD , DEF_NCOLORS ,
DEF_COLOR1 , DEF_COLOR2 , DEF_COLOR3 ) ;
}
/*
* Begin shameless thefts mentioned earlier. All I did was (1) remove the
* extra cases for t_Float and t_Bool and (2) hit ESC C-q at the opening
* brace in Xemacs for this function.
*/
static void
GetResource ( XrmDatabase database , char *parentname , char *parentclass ,
char *name , char *class , int valueType , char *def ,
caddr_t *valuep )
{
char *type;
XrmValue value;
char *string;
char buffer[1024];
char fullname[1024];
char fullclass[1024];
int len;
(void) sprintf(fullname, "%s.%s", parentname, name);
(void) sprintf(fullclass, "%s.%s", parentclass, class);
if (XrmGetResource(database, fullname, fullclass, &type, &value)) {
string = value.addr;
len = value.size;
} else {
string = def;
len = strlen(string);
}
(void) strncpy(buffer, string, sizeof(buffer));
buffer[sizeof(buffer) - 1] = '\0';
switch (valueType) {
case t_String:
{
char *s = (char *) malloc(len + 1);
if (s == (char *) NULL)
{
fprintf ( stderr ,"%s: GetResource - couldn't allocate memory" ,
progname ) ;
perror ( "" ) ;
exit ( 1 ) ;
}
(void) strncpy(s, string, len);
s[len] = '\0';
*((char **) valuep) = s;
}
break;
case t_Int:
*((int *) valuep) = atoi(buffer);
break;
}
}
static XrmDatabase
optionDB = NULL ,
serverDB = NULL ,
mergedDB = NULL ;
/*
* External interface to resources. Again, shamelessly stolen from
* xlockmore-3.0 source. I don't want to do what xlockmore does: open the
* display within the GetResource, so we'll break that function up into
* two seperate pieces: the first one will get the "name" and "display"
* resources, return ot the parent which will then open the display
* and then call the second one which will get the rest of the resources.
*/
void
GetInitialResources ( int *argc , char **argv )
{
XrmDatabase
nameDB = NULL ,
displayDB = NULL ;
XrmInitialize () ;
/*
* Get -name if we need to look for resources under another name.
*/
XrmParseCommand ( &nameDB , nameTable , nameEntries , progname , argc ,
argv ) ;
GetResource ( nameDB , progname , "*" , "name" , "Name" , t_String ,
DEF_CLASSNAME , &dName ) ;
XrmParseCommand ( &displayDB , displayTable , displayEntries , progname ,
argc , argv ) ;
dDisplay = getenv ( "DISPLAY" ) ;
if ( !dDisplay )
{
dDisplay = "" ;
}
GetResource ( displayDB , progname , dName , "display" , "Display" ,
t_String , dDisplay , &dDisplay ) ;
#if 0
printf("name %s, display %s\n",dName,dDisplay);
#endif
XrmMergeDatabases ( nameDB , &mergedDB ) ;
XrmMergeDatabases ( displayDB , &mergedDB ) ;
return ;
}
/*
* Now get the rest of the resources. This function will be called after the
* display has been opened by the application. I'm not going to look in
* ~/.Xdefaults or ~/.Xresources (presumably rdb has already set those values
* in the display RDB) and not in .../app-defaults/... since we are not looking
* at an app-default file for the app yet.
*
* So finally the databases we are left with are:
* - Server resources (presumably from rdb(1))
* - cmdline resources
* - environment (for DISPLAY)
*/
void
GetResources ( Display *display , int argc , char **argv )
{
char
*serverString ;
register int
i ;
serverString = XResourceManagerString ( display ) ;
if ( serverString )
{
serverDB = XrmGetStringDatabase ( serverString ) ;
(void) XrmMergeDatabases ( serverDB , &mergedDB ) ;
}
XrmParseCommand ( &optionDB , optionTable , optionEntries , progname ,
&argc , argv ) ;
/*
* Now there shouldn't be any arguments left at all. If there are any,
* they're errors and we should flag them.
*/
if ( argc > 1 ) /* argv[0] still remains, presumably */
{
if ( strcmp ( argv [1] , "-help" ) )
{
fprintf ( stderr , "%s: unknown option %s\n" , progname , argv [1] ) ;
}
Help () ;
exit ( 1 ) ;
}
XrmMergeDatabases ( optionDB , &mergedDB ) ;
for ( i = 0 ; i < nVars ; i++ )
{
GetResource ( mergedDB , progname , dName , optionVars [i] . name ,
optionVars [i] . class , optionVars [i] . type ,
optionVars [i] . def , optionVars [i] . var ) ;
}
XrmDestroyDatabase ( mergedDB ) ;
return ;
}
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