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/* $Xorg: misc.c,v 1.3 2000/08/17 19:54:33 cpqbld Exp $ */
/************************************************************
 Copyright (c) 1994 by Silicon Graphics Computer Systems, Inc.

 Permission to use, copy, modify, and distribute this
 software and its documentation for any purpose and without
 fee is hereby granted, provided that the above copyright
 notice appear in all copies and that both that copyright
 notice and this permission notice appear in supporting
 documentation, and that the name of Silicon Graphics not be 
 used in advertising or publicity pertaining to distribution 
 of the software without specific prior written permission.
 Silicon Graphics makes no representation about the suitability 
 of this software for any purpose. It is provided "as is"
 without any express or implied warranty.
 
 SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS 
 SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 
 AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
 GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL 
 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 
 DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 
 OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION  WITH
 THE USE OR PERFORMANCE OF THIS SOFTWARE.

 ********************************************************/
/* $XFree86: xc/programs/xkbcomp/misc.c,v 3.6 2002/12/20 20:18:33 paulo Exp $ */

#include "xkbcomp.h"
#include "xkbpath.h"
#include "tokens.h"
#include "keycodes.h"
#include "misc.h"
#include <X11/keysym.h>
#include "parseutils.h"

#include <X11/extensions/XKBgeom.h>

/***====================================================================***/

Bool
ProcessIncludeFile(	IncludeStmt	*	stmt,
			unsigned		file_type,
			XkbFile **		file_rtrn,
			unsigned *		merge_rtrn)
{
FILE	*file;
XkbFile	*rtrn,*mapToUse;
char	 oldFile[1024];
int	 oldLine = lineNum;

    rtrn= XkbFindFileInCache(stmt->file,file_type,&stmt->path);
    if (rtrn==NULL) {
	file= XkbFindFileInPath(stmt->file,file_type,&stmt->path);
	if (file==NULL) {
	    ERROR2("Can't find file \"%s\" for %s include\n",stmt->file,
					XkbDirectoryForInclude(file_type));
	    ACTION("Exiting\n");
	    return False;
	}
	strcpy(oldFile,scanFile);
	oldLine= lineNum;
	setScanState(stmt->file,1);
	if (debugFlags&2)
	    INFO1("About to parse include file %s\n",stmt->file);
	if ((XKBParseFile(file,&rtrn)==0)||(rtrn==NULL)) {
	    setScanState(oldFile,oldLine);
	    ERROR1("Error interpreting include file \"%s\"\n",stmt->file);
	    ACTION("Exiting\n");
	    fclose(file);
	    return False;
	}
	fclose(file);
	XkbAddFileToCache(stmt->file,file_type,stmt->path,rtrn);
    }
    mapToUse= rtrn;
    if (stmt->map!=NULL) {
	while ((mapToUse)&&((!uStringEqual(mapToUse->name,stmt->map))||
						(mapToUse->type!=file_type))) {
	    mapToUse= (XkbFile *)mapToUse->common.next;
	}
	if (!mapToUse) {
	    ERROR3("No %s named \"%s\" in the include file \"%s\"\n",
					XkbConfigText(file_type,XkbMessage),
    					stmt->map,stmt->file);
	    ACTION("Exiting\n");
	    return False;
	}
    }
    else if ((rtrn->common.next!=NULL)&&(warningLevel>5)) {
	WARN1("No map in include statement, but \"%s\" contains several\n",
								stmt->file);
	ACTION1("Using first defined map, \"%s\"\n",rtrn->name);
    }
    setScanState(oldFile,oldLine);
    if (mapToUse->type!=file_type) {
	ERROR2("Include file wrong type (expected %s, got %s)\n",
				XkbConfigText(file_type,XkbMessage),
				XkbConfigText(mapToUse->type,XkbMessage));
	ACTION1("Include file \"%s\" ignored\n",stmt->file);
	return False;
    }
    /* FIXME: we have to check recursive includes here (or somewhere) */

    mapToUse->compiled= True;
    *file_rtrn= mapToUse;
    *merge_rtrn= stmt->merge;
    return True;
}

/***====================================================================***/

int
ReportNotArray(char *type,char *field,char *name)
{
    ERROR2("The %s %s field is not an array\n",type,field);
    ACTION1("Ignoring illegal assignment in %s\n",name);
    return False;
}

int
ReportShouldBeArray(char *type,char *field,char *name)
{
    ERROR2("Missing subscript for %s %s\n",type,field);
    ACTION1("Ignoring illegal assignment in %s\n",name);
    return False;
}

int
ReportBadType(char *type,char *field,char *name,char *wanted)
{
    ERROR3("The %s %s field must be a %s\n",type,field,wanted);
    ACTION1("Ignoring illegal assignment in %s\n",name);
    return False;
}

int
ReportBadIndexType(char *type,char *field,char *name,char *wanted)
{
    ERROR3("Index for the %s %s field must be a %s\n",type,field,wanted);
    ACTION1("Ignoring assignment to illegal field in %s\n",name);
    return False;
}

int
ReportBadField(char *type,char *field,char *name)
{
    ERROR3("Unknown %s field %s in %s\n",type,field,name);
    ACTION1("Ignoring assignment to unknown field in %s\n",name);
    return False;
}

int
ReportMultipleDefs(char *type,char *field,char *name)
{
    WARN3("Multiple definitions of %s in %s \"%s\"\n",field,type,name);
    ACTION("Using last definition\n");
    return False;
}

/***====================================================================***/

Bool	
UseNewField(	unsigned	field,
		CommonInfo *	oldDefs,
		CommonInfo *	newDefs,
		unsigned *	pCollide)
{
Bool	useNew;

    useNew= False;
    if (oldDefs->defined&field) {
	if (newDefs->defined&field) {
	    if (((oldDefs->fileID==newDefs->fileID)&&(warningLevel>0))||
							(warningLevel>9)) {
		*pCollide|= field;
	    }
	    if (newDefs->merge!=MergeAugment)
		useNew= True;
	}
    }
    else if (newDefs->defined&field)
	useNew= True;
    return useNew;
}

Bool	
MergeNewField(	unsigned	field,
		CommonInfo * 	oldDefs,
		CommonInfo *	newDefs,
		unsigned *	pCollide)
{
    if ((oldDefs->defined&field)&&(newDefs->defined&field)) {
	if (((oldDefs->fileID==newDefs->fileID)&&(warningLevel>0))||
						 (warningLevel>9)) {
	    *pCollide|= field;
	}
	if (newDefs->merge==MergeAugment)
	    return True;
    }
    return False;
}

XPointer
ClearCommonInfo(CommonInfo *cmn)
{
    if (cmn!=NULL) {
	CommonInfo *this,*next;
	for (this=cmn;this!=NULL;this=next) {
	    next= this->next;
	    uFree(this);
	}
    }
    return NULL;
}

XPointer
AddCommonInfo(CommonInfo *old,CommonInfo *new)
{
CommonInfo *	first;

    first= old;
    while ( old && old->next ) {
	old= old->next;
    }
    new->next= NULL;
    if (old) {
	old->next= new;
	return (XPointer)first;
    }
    return (XPointer)new;
}

/***====================================================================***/

typedef struct _KeyNameDesc {
	KeySym	level1;
	KeySym	level2;
	char	name[5];
	Bool	used;
} KeyNameDesc;

KeyNameDesc dfltKeys[] = {
	{	XK_Escape,	NoSymbol,	"ESC\0"		},
	{	XK_quoteleft,	XK_asciitilde,	"TLDE"		},
	{	XK_1,		XK_exclam,	"AE01"		},
	{	XK_2,		XK_at,		"AE02"		},
	{	XK_3,		XK_numbersign,	"AE03"		},
	{	XK_4,		XK_dollar,	"AE04"		},
	{	XK_5,		XK_percent,	"AE05"		},
	{	XK_6,		XK_asciicircum,	"AE06"		},
	{	XK_7,		XK_ampersand,	"AE07"		},
	{	XK_8,		XK_asterisk,	"AE08"		},
	{	XK_9,		XK_parenleft,	"AE09"		},
	{	XK_0,		XK_parenright,	"AE10"		},
	{	XK_minus,	XK_underscore,	"AE11"		},
	{	XK_equal,	XK_plus,	"AE12"		},
	{	XK_BackSpace,	NoSymbol,	"BKSP"		},
	{	XK_Tab,		NoSymbol,	"TAB\0"		},
	{	XK_q,		XK_Q,		"AD01"		},
	{	XK_w,		XK_W,		"AD02"		},
	{	XK_e,		XK_E,		"AD03"		},
	{	XK_r,		XK_R,		"AD04"		},
	{	XK_t,		XK_T,		"AD05"		},
	{	XK_y,		XK_Y,		"AD06"		},
	{	XK_u,		XK_U,		"AD07"		},
	{	XK_i,		XK_I,		"AD08"		},
	{	XK_o,		XK_O,		"AD09"		},
	{	XK_p,		XK_P,		"AD10"		},
	{	XK_bracketleft,	XK_braceleft,	"AD11"		},
	{	XK_bracketright,XK_braceright,	"AD12"		},
	{	XK_Return,	NoSymbol,	"RTRN"		},
	{	XK_Caps_Lock,	NoSymbol,	"CAPS"		},
	{	XK_a,		XK_A,		"AC01"		},
	{	XK_s,		XK_S,		"AC02"		},
	{	XK_d,		XK_D,		"AC03"		},
	{	XK_f,		XK_F,		"AC04"		},
	{	XK_g,		XK_G,		"AC05"		},
	{	XK_h,		XK_H,		"AC06"		},
	{	XK_j,		XK_J,		"AC07"		},
	{	XK_k,		XK_K,		"AC08"		},
	{	XK_l,		XK_L,		"AC09"		},
	{	XK_semicolon,	XK_colon,	"AC10"		},
	{	XK_quoteright,	XK_quotedbl,	"AC11"		},
	{	XK_Shift_L,	NoSymbol,	"LFSH"		},
	{	XK_z,		XK_Z,		"AB01"		},
	{	XK_x,		XK_X,		"AB02"		},
	{	XK_c,		XK_C,		"AB03"		},
	{	XK_v,		XK_V,		"AB04"		},
	{	XK_b,		XK_B,		"AB05"		},
	{	XK_n,		XK_N,		"AB06"		},
	{	XK_m,		XK_M,		"AB07"		},
	{	XK_comma,	XK_less,	"AB08"		},
	{	XK_period,	XK_greater,	"AB09"		},
	{	XK_slash,	XK_question,	"AB10"		},
	{	XK_backslash,	XK_bar,		"BKSL"		},
	{	XK_Control_L,	NoSymbol,	"LCTL"		},
	{	XK_space,	NoSymbol,	"SPCE"		},
	{	XK_Shift_R,	NoSymbol,	"RTSH"		},
	{	XK_Alt_L,	NoSymbol,	"LALT"		},
	{	XK_space,	NoSymbol,	"SPCE"		},
	{	XK_Control_R,	NoSymbol,	"RCTL"		},
	{	XK_Alt_R,	NoSymbol,	"RALT"		},
	{	XK_F1,		NoSymbol,	"FK01"		},
	{	XK_F2,		NoSymbol,	"FK02"		},
	{	XK_F3,		NoSymbol,	"FK03"		},
	{	XK_F4,		NoSymbol,	"FK04"		},
	{	XK_F5,		NoSymbol,	"FK05"		},
	{	XK_F6,		NoSymbol,	"FK06"		},
	{	XK_F7,		NoSymbol,	"FK07"		},
	{	XK_F8,		NoSymbol,	"FK08"		},
	{	XK_F9,		NoSymbol,	"FK09"		},
	{	XK_F10,		NoSymbol,	"FK10"		},
	{	XK_F11,		NoSymbol,	"FK11"		},
	{	XK_F12,		NoSymbol,	"FK12"		},
	{	XK_Print,	NoSymbol,	"PRSC"		},
	{	XK_Scroll_Lock,	NoSymbol,	"SCLK"		},
	{	XK_Pause,	NoSymbol,	"PAUS"		},
	{	XK_Insert,	NoSymbol,	"INS\0"		},
	{	XK_Home,	NoSymbol,	"HOME"		},
	{	XK_Prior,	NoSymbol,	"PGUP"		},
	{	XK_Delete,	NoSymbol,	"DELE"		},
	{	XK_End,		NoSymbol,	"END"		},
	{	XK_Next,	NoSymbol,	"PGDN"		},
	{	XK_Up,		NoSymbol,	"UP\0\0"	},
	{	XK_Left,	NoSymbol,	"LEFT"		},
	{	XK_Down,	NoSymbol,	"DOWN"		},
	{	XK_Right,	NoSymbol,	"RGHT"		},
	{	XK_Num_Lock,	NoSymbol,	"NMLK"		},
	{	XK_KP_Divide,	NoSymbol,	"KPDV"		},
	{	XK_KP_Multiply,	NoSymbol,	"KPMU"		},
	{	XK_KP_Subtract,	NoSymbol,	"KPSU"		},
	{	NoSymbol,	XK_KP_7,	"KP7\0"		},
	{	NoSymbol,	XK_KP_8,	"KP8\0"		},
	{	NoSymbol,	XK_KP_9,	"KP9\0"		},
	{	XK_KP_Add,	NoSymbol,	"KPAD"		},
	{	NoSymbol,	XK_KP_4,	"KP4\0"		},
	{	NoSymbol,	XK_KP_5,	"KP5\0"		},
	{	NoSymbol,	XK_KP_6,	"KP6\0"		},
	{	NoSymbol,	XK_KP_1,	"KP1\0"		},
	{	NoSymbol,	XK_KP_2,	"KP2\0"		},
	{	NoSymbol,	XK_KP_3,	"KP3\0"		},
	{	XK_KP_Enter,	NoSymbol,	"KPEN"		},
	{	NoSymbol,	XK_KP_0,	"KP0\0"		},
	{	XK_KP_Delete,	NoSymbol,	"KPDL"		},
	{	XK_less,	XK_greater,	"LSGT"		},
	{	XK_KP_Separator,NoSymbol,	"KPCO"		},
	{	XK_Find,	NoSymbol,	"FIND"		},
	{	NoSymbol,	NoSymbol,	"\0\0\0\0"	}
};

Status
ComputeKbdDefaults(XkbDescPtr xkb)
{
Status		rtrn;
register int	i,tmp,nUnknown;
KeyNameDesc *	name;
KeySym *	syms;

    if ((xkb->names==NULL)||(xkb->names->keys==NULL)) {
	if ((rtrn=XkbAllocNames(xkb,XkbKeyNamesMask,0,0))!=Success)
	    return rtrn;
    }
    for (name=dfltKeys;(name->name[0]!='\0');name++) {
	name->used= False;
    }
    nUnknown= 0;
    for (i=xkb->min_key_code;i<=xkb->max_key_code;i++) {
	tmp= XkbKeyNumSyms(xkb,i);
	if ((xkb->names->keys[i].name[0]=='\0')&&(tmp>0)) {
	    tmp= XkbKeyGroupsWidth(xkb,i);
	    syms= XkbKeySymsPtr(xkb,i);
	    for (name=dfltKeys;(name->name[0]!='\0');name++) {
		Bool match= True;
		if (((name->level1!=syms[0])&&(name->level1!=NoSymbol))||
		   ((name->level2!=NoSymbol)&&(tmp<2))||
		   ((name->level2!=syms[1])&&(name->level2!=NoSymbol))) {
		    match= False;
		}
		if (match) {
		    if (!name->used) {
			memcpy(xkb->names->keys[i].name,name->name,
							XkbKeyNameLength);
			name->used= True;
		    }
		    else {
			if (warningLevel>2) {
			    WARN1("Several keys match pattern for %s\n",
				XkbKeyNameText(name->name,XkbMessage));
			    ACTION2("Using <U%03d> for key %d\n",nUnknown,i);
			}
			sprintf(xkb->names->keys[i].name,"U%03d",nUnknown++);
		    }
		    break;
		}
	    }
	    if (xkb->names->keys[i].name[0]=='\0') {
		if (warningLevel>2) {
		    WARN1("Key %d does not match any defaults\n",i);
		    ACTION1("Using name <U%03d>\n",nUnknown);
		    sprintf(xkb->names->keys[i].name,"U%03d",nUnknown++);
		}
	    }
	}
    }
    return Success;
}

Bool
FindNamedKey(	XkbDescPtr	xkb,
		unsigned long	name,
		unsigned int *	kc_rtrn,
		Bool		use_aliases,
		Bool		create,
		int		start_from)
{
register unsigned n;

    if (start_from<xkb->min_key_code) {
	start_from= xkb->min_key_code;
    }
    else if (start_from>xkb->max_key_code) {
	return False;
    }

    *kc_rtrn= 0;	/* some callers rely on this */
    if (xkb&&xkb->names&&xkb->names->keys) {
	for (n=start_from;n<=xkb->max_key_code;n++) {
	    unsigned long tmp;
	    tmp= KeyNameToLong(xkb->names->keys[n].name);
	    if (tmp==name) {
		*kc_rtrn= n;
		return True;
	    }
	}
	if (use_aliases) {
	    unsigned long new_name;
	    if (FindKeyNameForAlias(xkb,name,&new_name))
		return FindNamedKey(xkb,new_name,kc_rtrn,False,create,0);
	}
    }
    if (create) {
	if ((!xkb->names)||(!xkb->names->keys)) {
	    if (xkb->min_key_code<XkbMinLegalKeyCode) {
		xkb->min_key_code= XkbMinLegalKeyCode;
		xkb->max_key_code= XkbMaxLegalKeyCode;
	    }
	    if (XkbAllocNames(xkb,XkbKeyNamesMask,0,0)!=Success) {
		if (warningLevel>0) {
		    WARN("Couldn't allocate key names in FindNamedKey\n");
		    ACTION1("Key \"%s\" not automatically created\n",
						longText(name,XkbMessage));
		}
		return False;
	    }
	}
	for (n=xkb->min_key_code;n<=xkb->max_key_code;n++) {
	    if (xkb->names->keys[n].name[0]=='\0') {
		char buf[XkbKeyNameLength+1];
		LongToKeyName(name,buf);
		memcpy(xkb->names->keys[n].name,buf,XkbKeyNameLength);
		*kc_rtrn= n;
		return True;
	    }
	}
    }
    return False;
}

Bool
FindKeyNameForAlias(XkbDescPtr xkb,unsigned long lname,unsigned long *real_name)
{
register int	i;
char		name[XkbKeyNameLength+1];

    if (xkb&&xkb->geom&&xkb->geom->key_aliases) {
	XkbKeyAliasPtr	a;
	a= xkb->geom->key_aliases;
	LongToKeyName(lname,name);
	name[XkbKeyNameLength]= '\0';
	for (i=0;i<xkb->geom->num_key_aliases;i++,a++) {
	    if (strncmp(name,a->alias,XkbKeyNameLength)==0) {
		*real_name= KeyNameToLong(a->real);
		return True;
	    }
	}
    }
    if (xkb&&xkb->names&&xkb->names->key_aliases) {
	XkbKeyAliasPtr	a;
	a= xkb->names->key_aliases;
	LongToKeyName(lname,name);
	name[XkbKeyNameLength]= '\0';
	for (i=0;i<xkb->names->num_key_aliases;i++,a++) {
	    if (strncmp(name,a->alias,XkbKeyNameLength)==0) {
		*real_name= KeyNameToLong(a->real);
		return True;
	    }
	}
    }
    return False;
}