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emacs/oldXMenu/XMakeAssoc.c
Paul Eggert 55660072db Modernize to C89, for better static checking.
* Activate.c (XMenuActivate): Callback's first arg is readonly.
* AddPane.c (XMenuAddPane): Label is readonly.  Rename local
to avoid shadowing.
* AddSel.c (XMenuAddSelection): Help arg is readonly.  Rename local.
* Create.c (atoi, atof): Remove decls; include <stdlib.h>.
(MAX_INACT_PNUM, TILE_BUF_SIZE): Remove; unused.
(x_get_resource_string): Args are readonly.
(XAllocDisplayColor): colorName is readonly.
(XMenuCreate): def_env is readonly.  Remove unused locals.  Avoid
"else;".
* Destroy.c (XMenuDestroy): Return void.
* Error.c (XMenuError): Remove const pointer.
* EvHand.c (XMenuEventHandler): Return void.
* FindPane.c, FindSel.c: Include <string.h>.
* InsPane.c (XMenuInsertPane): Rename local to avoid shadowing.
* InsSel.c (XMenuInsertSelection): Likewise.
* Internal.c (toggle_color, BUFFER_SIZE): Remove; unused.
(_XMErrorList): Now const.
(_XMWinQueInit, _XMRecomputeGlobals, _XMTransToOrigin, _XMRefreshPane):
(_XMRefreshSelection): Return void.
(_XMWinQueFlush, _XMRefreshSelection): Rename locals to avoid
shadowing.
(_XMWinQueFlush): Use stack, not heap.  Don't use uninitialized var.
* SetAEQ.c (XMenuSetAEQ): Now returns void.
* SetFrz.c (XMenuSetFreeze): Likewise.
* X10.h (XAssoc): Use void * for generic pointer.
* XDelAssoc.c: Include XMenuInt.h rather than duplicating part of it.
* XDestAssoc.c, XMakeAssoc.c: Likewise.
* XDestAssoc.c (XDestroyAssocTable): Return void.
* XMakeAssoc.c (XMakeAssoc): Use void * for generic pointer.
* XMenu.h, XMenuInt.h: Adjust to signature changes.  Use const
for pointers to readonly storage.
* insque.c: Include XMenuInt.h, to check our own signature.
(emacs_insque, emacs_remque): Use void * for generic pointers.
2011-04-16 01:25:42 -07:00

80 lines
2.4 KiB
C

/* Copyright Massachusetts Institute of Technology 1985 */
#include "copyright.h"
#include <config.h>
#include "XMenuInt.h"
#include <X11/Xresource.h>
#include <errno.h>
#ifndef NULL
#define NULL 0
#endif
/*
* XMakeAssoc - Insert data into an XAssocTable keyed on an XId.
* Data is inserted into the table only once. Redundant inserts are
* meaningless (but cause no problems). The queue in each association
* bucket is sorted (lowest XId to highest XId).
*/
void
XMakeAssoc(register Display *dpy, register XAssocTable *table, register XID x_id, register void *data)
{
int hash;
register XAssoc *bucket;
register XAssoc *Entry;
register XAssoc *new_entry;
/* Hash the XId to get the bucket number. */
hash = x_id & (table->size - 1);
/* Look up the bucket to get the entries in that bucket. */
bucket = &table->buckets[hash];
/* Get the first entry in the bucket. */
Entry = bucket->next;
/* If (Entry != bucket), the bucket is empty so make */
/* the new entry the first entry in the bucket. */
/* if (Entry == bucket), the we have to search the */
/* bucket. */
if (Entry != bucket) {
/* The bucket isn't empty, begin searching. */
/* If we leave the for loop then we have either passed */
/* where the entry should be or hit the end of the bucket. */
/* In either case we should then insert the new entry */
/* before the current value of "Entry". */
for (; Entry != bucket; Entry = Entry->next) {
if (Entry->x_id == x_id) {
/* Entry has the same XId... */
if (Entry->display == dpy) {
/* Entry has the same Display... */
/* Therefore there is already an */
/* entry with this XId and Display, */
/* reset its data value and return. */
Entry->data = data;
return;
}
/* We found an association with the right */
/* id but the wrong display! */
continue;
}
/* If the current entry's XId is greater than the */
/* XId of the entry to be inserted then we have */
/* passed the location where the new XId should */
/* be inserted. */
if (Entry->x_id > x_id) break;
}
}
/* If we are here then the new entry should be inserted just */
/* before the current value of "Entry". */
/* Create a new XAssoc and load it with new provided data. */
new_entry = (XAssoc *) malloc(sizeof(XAssoc));
new_entry->display = dpy;
new_entry->x_id = x_id;
new_entry->data = data;
/* Insert the new entry. */
emacs_insque((struct qelem *)new_entry, (struct qelem *)Entry->prev);
}