xenocara/app/xkbevd/cfgscan.c
2006-11-25 20:07:29 +00:00

385 lines
9.5 KiB
C

/* $Xorg: cfgscan.c,v 1.3 2000/08/17 19:54:49 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/xkbevd/cfgscan.c,v 3.6 2001/01/17 23:46:07 dawes Exp $ */
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <X11/Xos.h>
#include <X11/X.h>
#include <X11/extensions/XKB.h>
#include "tokens.h"
#include "xkbevd.h"
FILE *yyin = NULL;
static char scanFileBuf[1024];
char * scanFile= scanFileBuf;
int lineNum= 0;
int scanInt;
char *scanIntStr;
int scanIntClass;
char *scanStr = NULL;
int scanStrLine= 0;
#define BUFSIZE 512
static int nInBuf = 0;
static char buf[BUFSIZE];
#ifdef DEBUG
extern unsigned debugFlags;
static char *
tokText(int tok)
{
static char buf[32];
switch (tok) {
case END_OF_FILE: sprintf(buf, "END_OF_FILE");break;
case ERROR: sprintf(buf, "ERROR"); break;
case BELL: sprintf(buf, "BELL"); break;
case ACCESSX: sprintf(buf, "ACCESSX"); break;
case MESSAGE: sprintf(buf, "MESSAGE"); break;
case NONE: sprintf(buf, "NONE"); break;
case IGNORE: sprintf(buf, "IGNORE"); break;
case ECHO: sprintf(buf, "ECHO"); break;
case PRINT_EV: sprintf(buf, "PRINT_EV"); break;
case SHELL: sprintf(buf, "SHELL"); break;
case SOUND: sprintf(buf, "SOUND"); break;
case EQUALS: sprintf(buf, "EQUALS"); break;
case PLUS: sprintf(buf, "PLUS"); break;
case MINUS: sprintf(buf, "MINUS"); break;
case DIVIDE: sprintf(buf, "DIVIDE"); break;
case TIMES: sprintf(buf, "TIMES"); break;
case OBRACE: sprintf(buf, "OBRACE"); break;
case CBRACE: sprintf(buf, "CBRACE"); break;
case OPAREN: sprintf(buf, "OPAREN"); break;
case CPAREN: sprintf(buf, "CPAREN"); break;
case OBRACKET: sprintf(buf, "OBRACKET");break;
case CBRACKET: sprintf(buf, "CBRACKET");break;
case DOT: sprintf(buf, "DOT"); break;
case COMMA: sprintf(buf, "COMMA"); break;
case SEMI: sprintf(buf, "SEMI"); break;
case EXCLAM: sprintf(buf, "EXCLAM"); break;
case INVERT: sprintf(buf, "INVERT"); break;
case STRING: sprintf(buf, "STRING (%s)",scanStr); break;
case INTEGER: sprintf(buf, "INTEGER (0x%x)",scanInt); break;
case FLOAT: sprintf(buf, "FLOAT (%d.%d)",
scanInt/XkbGeomPtsPerMM,
scanInt%XkbGeomPtsPerMM);break;
case IDENT: sprintf(buf, "IDENT (%s)",scanStr); break;
case KEYNAME: sprintf(buf, "KEYNAME (%s)",scanStr); break;
default: sprintf(buf, "UNKNOWN"); break;
}
return buf;
}
#endif
int
setScanState(char *file, int line)
{
if (file!=NULL)
strncpy(scanFile,file,1024);
if (line>=0)
lineNum= line;
return 1;
}
static int
yyGetString(void)
{
int ch;
nInBuf = 0;
while ( ((ch=getc(yyin))!=EOF) && (ch!='"') ) {
if ( ch == '\\' ) {
if ((ch = getc(yyin))!=EOF) {
if ( ch=='n' ) ch = '\n';
else if ( ch == 't' ) ch = '\t';
else if ( ch == 'v' ) ch = '\v';
else if ( ch == 'b' ) ch = '\b';
else if ( ch == 'r' ) ch = '\r';
else if ( ch == 'f' ) ch = '\f';
else if ( ch == 'e' ) ch = '\033';
else if ( ch == '0' ) {
int tmp,stop;
ch = stop = 0;
if (((tmp=getc(yyin))!=EOF) && (isdigit(tmp)) &&
(tmp!='8') && (tmp!='9')) {
ch= (ch*8)+(tmp-'0');
}
else {
stop= 1;
ungetc(tmp,yyin);
}
if ((!stop) && ((tmp=getc(yyin))!=EOF) && (isdigit(tmp)) &&
(tmp!='8') && (tmp!='9')) {
ch= (ch*8)+(tmp-'0');
}
else {
stop= 1;
ungetc(tmp,yyin);
}
if ((!stop) && ((tmp=getc(yyin))!=EOF) && (isdigit(tmp)) &&
(tmp!='8') && (tmp!='9')) {
ch= (ch*8)+(tmp-'0');
}
else {
stop= 1;
ungetc(tmp,yyin);
}
}
}
else return ERROR;
}
if ( nInBuf < BUFSIZE-1 )
buf[nInBuf++] = ch;
}
if ( ch == '"' ) {
buf[nInBuf++] = '\0';
if ( scanStr )
free( scanStr );
scanStr = uStringDup(buf);
scanStrLine = lineNum;
return STRING;
}
return ERROR;
}
static int
yyGetKeyName(void)
{
int ch;
nInBuf = 0;
while ( ((ch=getc(yyin))!=EOF) && (ch!='>') ) {
if ( ch == '\\' ) {
if ((ch = getc(yyin))!=EOF) {
if ( ch=='n' ) ch = '\n';
else if ( ch == 't' ) ch = '\t';
else if ( ch == 'v' ) ch = '\v';
else if ( ch == 'b' ) ch = '\b';
else if ( ch == 'r' ) ch = '\r';
else if ( ch == 'f' ) ch = '\f';
else if ( ch == 'e' ) ch = '\033';
else if ( ch == '0' ) {
int tmp,stop;
ch = stop = 0;
if (((tmp=getc(yyin))!=EOF) && (isdigit(tmp)) &&
(tmp!='8') && (tmp!='9')) {
ch= (ch*8)+(tmp-'0');
}
else {
stop= 1;
ungetc(tmp,yyin);
}
if ((!stop) && ((tmp=getc(yyin))!=EOF) && (isdigit(tmp)) &&
(tmp!='8') && (tmp!='9')) {
ch= (ch*8)+(tmp-'0');
}
else {
stop= 1;
ungetc(tmp,yyin);
}
if ((!stop) && ((tmp=getc(yyin))!=EOF) && (isdigit(tmp)) &&
(tmp!='8') && (tmp!='9')) {
ch= (ch*8)+(tmp-'0');
}
else {
stop= 1;
ungetc(tmp,yyin);
}
}
}
else return ERROR;
}
if ( nInBuf < BUFSIZE-1 )
buf[nInBuf++] = ch;
}
if (( ch == '>' )&&(nInBuf<5)) {
buf[nInBuf++] = '\0';
if ( scanStr )
free( scanStr );
scanStr = uStringDup(buf);
scanStrLine = lineNum;
return KEYNAME;
}
return ERROR;
}
struct _Keyword {
char *keyword;
int token;
} keywords[] = {
{ "bell", BELL },
{ "accessx", ACCESSX },
{ "message", MESSAGE },
{ "none", NONE },
{ "ignore", IGNORE },
{ "echo", ECHO },
{ "printevent", PRINT_EV },
{ "shell", SHELL },
{ "sound", SOUND }
};
int numKeywords = sizeof(keywords)/sizeof(struct _Keyword);
static int
yyGetIdent(int first)
{
int ch,i,found;
int rtrn = -1;
buf[0] = first; nInBuf = 1;
while ( ((ch=getc(yyin))!=EOF) && (isalnum(ch)||(ch=='_')) ) {
if ( nInBuf < BUFSIZE - 1 )
buf[nInBuf++] = ch;
}
buf[nInBuf++] = '\0';
found= 0;
for (i=0;(!found)&&(i<numKeywords);i++) {
if (uStrCaseCmp(buf,keywords[i].keyword)==0) {
rtrn= keywords[i].token;
found= 1;
}
}
if (!found) {
if ( scanStr )
free( scanStr );
scanStr = uStringDup(buf);
scanStrLine = lineNum;
rtrn = IDENT;
}
if ( (ch!=EOF) && (!isspace(ch)) )
ungetc( ch, yyin );
else if ( ch=='\n' )
lineNum++;
return rtrn;
}
static int
yyGetNumber(int ch)
{
int isFloat= 0;
buf[0]= ch;
nInBuf= 1;
while (((ch=getc(yyin))!=EOF)&&(isxdigit(ch)||((nInBuf==1)&&(ch=='x')))) {
buf[nInBuf++]= ch;
}
if (ch=='.') {
isFloat= 1;
buf[nInBuf++]= ch;
while (((ch=getc(yyin))!=EOF)&&(isxdigit(ch))) {
buf[nInBuf++]= ch;
}
}
buf[nInBuf++]= '\0';
if ((ch!=EOF)&&(!isspace(ch)))
ungetc( ch, yyin );
if (isFloat) {
float tmp;
if (sscanf(buf,"%g",&tmp)==1) {
scanInt= tmp*XkbGeomPtsPerMM;
return FLOAT;
}
}
else if ( sscanf(buf,"%i",&scanInt)==1 )
return INTEGER;
fprintf(stderr,"Malformed number %s\n",buf);
return ERROR;
}
int
yylex(void)
{
int ch;
int rtrn;
do {
ch = getc(yyin);
if ( ch == '\n' ) {
lineNum++;
}
else if ( ch=='/' ) { /* handle C++ style double-/ comments */
int newch= getc(yyin);
if (newch=='/') {
do {
ch= getc(yyin);
} while ((ch!='\n')&&(ch!=EOF));
lineNum++;
}
else if (newch!=EOF) {
ungetc(newch,yyin);
}
}
} while ((ch!=EOF)&&(isspace(ch)));
if ( ch == '=' ) rtrn = EQUALS;
else if ( ch == '+' ) rtrn = PLUS;
else if ( ch == '-' ) rtrn = MINUS;
else if ( ch == '/' ) rtrn = DIVIDE;
else if ( ch == '*' ) rtrn = TIMES;
else if ( ch == '{' ) rtrn = OBRACE;
else if ( ch == '}' ) rtrn = CBRACE;
else if ( ch == '(' ) rtrn = OPAREN;
else if ( ch == ')' ) rtrn = CPAREN;
else if ( ch == '[' ) rtrn = OBRACKET;
else if ( ch == ']' ) rtrn = CBRACKET;
else if ( ch == '.' ) rtrn = DOT;
else if ( ch == ',' ) rtrn = COMMA;
else if ( ch == ';' ) rtrn = SEMI;
else if ( ch == '!' ) rtrn = EXCLAM;
else if ( ch == '~' ) rtrn = INVERT;
else if ( ch == '"' ) rtrn = yyGetString();
else if ( ch == '<' ) rtrn = yyGetKeyName();
else if ( isalpha(ch) || (ch=='_')) rtrn = yyGetIdent(ch);
else if ( isdigit(ch) ) rtrn = yyGetNumber(ch);
else if ( ch == EOF ) rtrn = END_OF_FILE;
else {
fprintf(stderr,"Unexpected character %c (%d) in input stream\n",ch,ch);
rtrn = ERROR;
}
#ifdef DEBUG
if (debugFlags&0x2)
fprintf(stderr,"scan: %s\n",tokText(rtrn));
#endif
return rtrn;
}