171 lines
3.9 KiB
C
171 lines
3.9 KiB
C
/* $XConsortium: SmXdef.c /main/4 1995/10/30 09:39:16 rswiston $ */
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/* *
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* (c) Copyright 1993, 1994 Hewlett-Packard Company *
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* (c) Copyright 1993, 1994 International Business Machines Corp. *
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* (c) Copyright 1993, 1994 Sun Microsystems, Inc. *
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* (c) Copyright 1993, 1994 Novell, Inc. *
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*/
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/*************************************<+>*************************************
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*****************************************************************************
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**
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** File: SmXdef.c
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**
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** Project: DT Session Manager (dtsession)
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**
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** Description:
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** -----------
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** This file contains routines to manage the Xdefaults file.
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**
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** SmXdefMerge() - merge .Xdefaults file into RESOURCE_MANAGER
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** SmXdefSubtract() - subtract .Xdefaults file from given database
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**
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*****************************************************************************
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*************************************<+>*************************************/
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#include <stdio.h>
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#include <X11/Intrinsic.h>
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#include "Sm.h"
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#include "SmXrm.h"
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/*
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* State data
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* dbXdefaults - copy of .Xdefaults in Xrm database form
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*/
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static XrmDatabase dbXdefaults = NULL;
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/*
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* Note:
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*
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* The memory for dbXdefaults is freed only upon dtsession termination
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*
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* This code is currently restricted to handling the .Xdefaults file,
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* but can easily be extended to handle other default resource files.
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*
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*/
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/*************************************<->*************************************
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*
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* SmXdefMerge(display)
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*
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* Description:
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* -----------
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* Merge the .Xdefaults file into the RESOURCE_MANAGER database
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*
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* Inputs:
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* ------
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* display - display connection
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*
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* Outputs:
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* -------
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*
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*
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* Comments:
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* --------
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*
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*************************************<->***********************************/
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void
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SmXdefMerge(Display *display)
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{
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char *xdefaults;
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/*
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* Load .Xdefaults
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*/
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if( (xdefaults = (char *)malloc(strlen(getenv("HOME"))+12)) != NULL)
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{
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sprintf(xdefaults,"%s/%s",getenv("HOME"),".Xdefaults");
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if(access(xdefaults,R_OK) == 0)
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{
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FILE *fp;
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char *b = NULL;
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int size;
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struct stat statinfo;
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/*
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* Determine size of file.
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*/
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if (stat(xdefaults, &statinfo) == -1)
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{
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statinfo.st_size = 0;
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}
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/*
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* Get some memory.
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*/
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if (statinfo.st_size > 0)
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{
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b = (char *)SM_MALLOC(statinfo.st_size + 1);
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}
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if (b != NULL)
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{
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/*
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* Read file into memory.
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*/
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if ((fp = fopen(xdefaults, "r")) != NULL)
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{
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size = fread(b, 1, statinfo.st_size, fp);
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fclose(fp);
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}
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if (size == statinfo.st_size)
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{
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/*
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* Merge .Xdefaults string into RESOURCE_MANAGER database, and
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* also convert to Xrm database form for later subtraction.
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*/
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b[size] = '\0';
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_DtAddToResource(display, b);
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dbXdefaults = XrmGetStringDatabase(b);
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SM_FREE(b);
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}
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}
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}
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free(xdefaults);
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}
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}
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/*************************************<->*************************************
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*
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* SmXdefSubtract(db)
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*
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* Description:
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* -----------
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* Subract prior merged .Xdefaults file from given database
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*
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* Inputs:
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* ------
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* db - Xrm database from which to subtract .Xdefaults
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*
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* Outputs:
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* -------
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*
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* Return:
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* ------
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* dbResult - result database
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*
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* Comments:
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* --------
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* Caller is responsible for freeing dbResult using XrmDestroyDatabase()
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*
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*
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*************************************<->***********************************/
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XrmDatabase
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SmXdefSubtract(XrmDatabase db)
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{
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XrmDatabase dbResult;
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if (dbXdefaults)
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{
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dbResult = SmXrmSubtractDatabase(dbXdefaults, db);
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}
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else
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{
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dbResult = NULL;
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}
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return(dbResult);
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}
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