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Frozen Fish 1: Amiga
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xprkermit.lha
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XprKermit
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libsup.c
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C/C++ Source or Header
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1993-03-26
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3KB
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131 lines
/* libsup.c -- exec library routines for XPR Kermit */
#include <exec/lists.h>
#include <exec/resident.h>
#include <functions.h>
#include "ckxker.h"
#include "version.h"
/*lint -esym(530,XProtocolBase) suppress "not initialized" for this */
void myInit(void);
long myOpen(void);
long myClose(void);
long myExpunge(void);
#pragma amicall(XProtocolBase, 0x06, myOpen())
#pragma amicall(XProtocolBase, 0x0c, myClose())
#pragma amicall(XProtocolBase, 0x12, myExpunge())
/* library initialization table, used for AUTOINIT libraries */
struct InitTable {
unsigned long it_DataSize; /* library data space size */
void **it_FuncTable; /* table of entry points */
void *it_DataInit; /* table of data initializers */
void (*it_InitFunc)(void); /* initialization function to run */
};
void *libfunctab[] = { /* my function table */
myOpen, /* standard open */
myClose, /* standard close */
myExpunge, /* standard expunge */
0,
/* ------ user UTILITIES */
XProtocolCleanup,
XProtocolSetup,
XProtocolSend,
XProtocolReceive,
(void *)-1 /* end of function vector table */
};
struct InitTable myInitTab = {
sizeof (struct XProtocolBase),
libfunctab,
0, /* will initialize my data in funkymain() */
myInit
};
char myname[] = "xprkermit.library";
char myid[] = "xprkermit " VSTRING " (" __DATE__ ")\r\n";
extern struct Resident myRomTag;
long
_main(struct XProtocolBase *XProtocolBase, unsigned long seglist)
{
XProtocolBase->xp_SegList = seglist;
/* ----- init. library structure ----- */
XProtocolBase->xp_Lib.lib_Node.ln_Type = NT_LIBRARY;
XProtocolBase->xp_Lib.lib_Node.ln_Name = (char *) myname;
XProtocolBase->xp_Lib.lib_Flags = LIBF_SUMUSED | LIBF_CHANGED;
XProtocolBase->xp_Lib.lib_Version = myRomTag.rt_Version;
XProtocolBase->xp_Lib.lib_Revision = REVISION;
XProtocolBase->xp_Lib.lib_IdString = (APTR) myid;
return 0;
}
long myOpen(void)
{
struct XProtocolBase *XProtocolBase;
/*
* We are (should be :-) Re-entrant!
*/
/* mark us as having another customer */
XProtocolBase->xp_Lib.lib_OpenCnt++;
/* prevent delayed expunges (standard procedure) */
XProtocolBase->xp_Lib.lib_Flags &= ~LIBF_DELEXP;
return ((long) XProtocolBase);
}
long
myClose(void)
{
struct XProtocolBase *XProtocolBase;
long retval = 0;
if (--XProtocolBase->xp_Lib.lib_OpenCnt == 0) {
if (XProtocolBase->xp_Lib.lib_Flags & LIBF_DELEXP) {
/* no more people have me open,
* and I have a delayed expunge pending
*/
retval = myExpunge(); /* return segment list */
}
}
return (retval);
}
long myExpunge(void)
{
struct XProtocolBase *XProtocolBase;
unsigned long seglist = 0;
long libsize;
extern struct Library *DOSBase;
if (XProtocolBase->xp_Lib.lib_OpenCnt == 0) {
/* really expunge: remove libbase and freemem */
seglist = XProtocolBase->xp_SegList;
Remove(&XProtocolBase->xp_Lib.lib_Node);
/* i'm no longer an installed library */
libsize = XProtocolBase->xp_Lib.lib_NegSize+XProtocolBase->xp_Lib.lib_PosSize;
FreeMem((char *)XProtocolBase-XProtocolBase->xp_Lib.lib_NegSize, libsize);
CloseLibrary(DOSBase); /* keep the counts even */
}
else
XProtocolBase->xp_Lib.lib_Flags |= LIBF_DELEXP;
/* return NULL or real seglist */
return ((long) seglist);
}