385 lines
9.5 KiB
C
385 lines
9.5 KiB
C
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/* $Xorg: cfgscan.c,v 1.3 2000/08/17 19:54:49 cpqbld Exp $ */
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/************************************************************
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Copyright (c) 1994 by Silicon Graphics Computer Systems, Inc.
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Permission to use, copy, modify, and distribute this
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software and its documentation for any purpose and without
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fee is hereby granted, provided that the above copyright
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notice appear in all copies and that both that copyright
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notice and this permission notice appear in supporting
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documentation, and that the name of Silicon Graphics not be
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used in advertising or publicity pertaining to distribution
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of the software without specific prior written permission.
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Silicon Graphics makes no representation about the suitability
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of this software for any purpose. It is provided "as is"
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without any express or implied warranty.
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SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
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SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
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GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
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DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH
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THE USE OR PERFORMANCE OF THIS SOFTWARE.
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********************************************************/
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/* $XFree86: xc/programs/xkbevd/cfgscan.c,v 3.6 2001/01/17 23:46:07 dawes Exp $ */
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <X11/Xos.h>
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#include <X11/X.h>
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#include <X11/extensions/XKB.h>
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#include "tokens.h"
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#include "xkbevd.h"
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FILE *yyin = NULL;
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static char scanFileBuf[1024];
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char * scanFile= scanFileBuf;
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int lineNum= 0;
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int scanInt;
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char *scanIntStr;
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int scanIntClass;
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char *scanStr = NULL;
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int scanStrLine= 0;
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#define BUFSIZE 512
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static int nInBuf = 0;
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static char buf[BUFSIZE];
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#ifdef DEBUG
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extern unsigned debugFlags;
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static char *
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tokText(int tok)
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{
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static char buf[32];
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switch (tok) {
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case END_OF_FILE: sprintf(buf, "END_OF_FILE");break;
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case ERROR: sprintf(buf, "ERROR"); break;
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case BELL: sprintf(buf, "BELL"); break;
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case ACCESSX: sprintf(buf, "ACCESSX"); break;
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case MESSAGE: sprintf(buf, "MESSAGE"); break;
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case NONE: sprintf(buf, "NONE"); break;
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case IGNORE: sprintf(buf, "IGNORE"); break;
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case ECHO: sprintf(buf, "ECHO"); break;
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case PRINT_EV: sprintf(buf, "PRINT_EV"); break;
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case SHELL: sprintf(buf, "SHELL"); break;
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case SOUND: sprintf(buf, "SOUND"); break;
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case EQUALS: sprintf(buf, "EQUALS"); break;
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case PLUS: sprintf(buf, "PLUS"); break;
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case MINUS: sprintf(buf, "MINUS"); break;
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case DIVIDE: sprintf(buf, "DIVIDE"); break;
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case TIMES: sprintf(buf, "TIMES"); break;
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case OBRACE: sprintf(buf, "OBRACE"); break;
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case CBRACE: sprintf(buf, "CBRACE"); break;
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case OPAREN: sprintf(buf, "OPAREN"); break;
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case CPAREN: sprintf(buf, "CPAREN"); break;
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case OBRACKET: sprintf(buf, "OBRACKET");break;
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case CBRACKET: sprintf(buf, "CBRACKET");break;
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case DOT: sprintf(buf, "DOT"); break;
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case COMMA: sprintf(buf, "COMMA"); break;
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case SEMI: sprintf(buf, "SEMI"); break;
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case EXCLAM: sprintf(buf, "EXCLAM"); break;
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case INVERT: sprintf(buf, "INVERT"); break;
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case STRING: sprintf(buf, "STRING (%s)",scanStr); break;
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case INTEGER: sprintf(buf, "INTEGER (0x%x)",scanInt); break;
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case FLOAT: sprintf(buf, "FLOAT (%d.%d)",
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scanInt/XkbGeomPtsPerMM,
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scanInt%XkbGeomPtsPerMM);break;
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case IDENT: sprintf(buf, "IDENT (%s)",scanStr); break;
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case KEYNAME: sprintf(buf, "KEYNAME (%s)",scanStr); break;
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default: sprintf(buf, "UNKNOWN"); break;
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}
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return buf;
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}
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#endif
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int
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setScanState(char *file, int line)
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{
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if (file!=NULL)
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strncpy(scanFile,file,1024);
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if (line>=0)
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lineNum= line;
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return 1;
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}
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static int
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yyGetString(void)
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{
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int ch;
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nInBuf = 0;
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while ( ((ch=getc(yyin))!=EOF) && (ch!='"') ) {
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if ( ch == '\\' ) {
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if ((ch = getc(yyin))!=EOF) {
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if ( ch=='n' ) ch = '\n';
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else if ( ch == 't' ) ch = '\t';
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else if ( ch == 'v' ) ch = '\v';
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else if ( ch == 'b' ) ch = '\b';
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else if ( ch == 'r' ) ch = '\r';
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else if ( ch == 'f' ) ch = '\f';
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else if ( ch == 'e' ) ch = '\033';
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else if ( ch == '0' ) {
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int tmp,stop;
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ch = stop = 0;
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if (((tmp=getc(yyin))!=EOF) && (isdigit(tmp)) &&
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(tmp!='8') && (tmp!='9')) {
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ch= (ch*8)+(tmp-'0');
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}
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else {
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stop= 1;
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ungetc(tmp,yyin);
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}
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if ((!stop) && ((tmp=getc(yyin))!=EOF) && (isdigit(tmp)) &&
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(tmp!='8') && (tmp!='9')) {
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ch= (ch*8)+(tmp-'0');
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}
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else {
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stop= 1;
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ungetc(tmp,yyin);
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}
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if ((!stop) && ((tmp=getc(yyin))!=EOF) && (isdigit(tmp)) &&
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(tmp!='8') && (tmp!='9')) {
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ch= (ch*8)+(tmp-'0');
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}
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else {
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stop= 1;
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ungetc(tmp,yyin);
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}
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}
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}
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else return ERROR;
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}
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if ( nInBuf < BUFSIZE-1 )
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buf[nInBuf++] = ch;
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}
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if ( ch == '"' ) {
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buf[nInBuf++] = '\0';
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if ( scanStr )
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free( scanStr );
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scanStr = uStringDup(buf);
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scanStrLine = lineNum;
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return STRING;
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}
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return ERROR;
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}
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static int
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yyGetKeyName(void)
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{
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int ch;
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nInBuf = 0;
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while ( ((ch=getc(yyin))!=EOF) && (ch!='>') ) {
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if ( ch == '\\' ) {
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if ((ch = getc(yyin))!=EOF) {
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if ( ch=='n' ) ch = '\n';
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else if ( ch == 't' ) ch = '\t';
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else if ( ch == 'v' ) ch = '\v';
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else if ( ch == 'b' ) ch = '\b';
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else if ( ch == 'r' ) ch = '\r';
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else if ( ch == 'f' ) ch = '\f';
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else if ( ch == 'e' ) ch = '\033';
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else if ( ch == '0' ) {
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int tmp,stop;
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ch = stop = 0;
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if (((tmp=getc(yyin))!=EOF) && (isdigit(tmp)) &&
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(tmp!='8') && (tmp!='9')) {
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ch= (ch*8)+(tmp-'0');
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}
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else {
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stop= 1;
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ungetc(tmp,yyin);
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}
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if ((!stop) && ((tmp=getc(yyin))!=EOF) && (isdigit(tmp)) &&
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(tmp!='8') && (tmp!='9')) {
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ch= (ch*8)+(tmp-'0');
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}
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else {
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stop= 1;
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ungetc(tmp,yyin);
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}
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if ((!stop) && ((tmp=getc(yyin))!=EOF) && (isdigit(tmp)) &&
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(tmp!='8') && (tmp!='9')) {
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ch= (ch*8)+(tmp-'0');
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}
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else {
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stop= 1;
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ungetc(tmp,yyin);
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}
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}
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}
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else return ERROR;
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}
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if ( nInBuf < BUFSIZE-1 )
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buf[nInBuf++] = ch;
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}
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if (( ch == '>' )&&(nInBuf<5)) {
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buf[nInBuf++] = '\0';
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if ( scanStr )
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free( scanStr );
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scanStr = uStringDup(buf);
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scanStrLine = lineNum;
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return KEYNAME;
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}
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return ERROR;
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}
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struct _Keyword {
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char *keyword;
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int token;
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} keywords[] = {
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{ "bell", BELL },
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{ "accessx", ACCESSX },
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{ "message", MESSAGE },
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{ "none", NONE },
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{ "ignore", IGNORE },
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{ "echo", ECHO },
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{ "printevent", PRINT_EV },
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{ "shell", SHELL },
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{ "sound", SOUND }
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};
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int numKeywords = sizeof(keywords)/sizeof(struct _Keyword);
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static int
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yyGetIdent(int first)
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{
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int ch,i,found;
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int rtrn = -1;
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buf[0] = first; nInBuf = 1;
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while ( ((ch=getc(yyin))!=EOF) && (isalnum(ch)||(ch=='_')) ) {
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if ( nInBuf < BUFSIZE - 1 )
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buf[nInBuf++] = ch;
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}
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buf[nInBuf++] = '\0';
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found= 0;
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for (i=0;(!found)&&(i<numKeywords);i++) {
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if (uStrCaseCmp(buf,keywords[i].keyword)==0) {
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rtrn= keywords[i].token;
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found= 1;
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}
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}
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if (!found) {
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if ( scanStr )
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free( scanStr );
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scanStr = uStringDup(buf);
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scanStrLine = lineNum;
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rtrn = IDENT;
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}
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if ( (ch!=EOF) && (!isspace(ch)) )
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ungetc( ch, yyin );
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else if ( ch=='\n' )
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lineNum++;
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return rtrn;
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}
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static int
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yyGetNumber(int ch)
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{
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int isFloat= 0;
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buf[0]= ch;
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nInBuf= 1;
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while (((ch=getc(yyin))!=EOF)&&(isxdigit(ch)||((nInBuf==1)&&(ch=='x')))) {
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buf[nInBuf++]= ch;
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}
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if (ch=='.') {
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isFloat= 1;
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buf[nInBuf++]= ch;
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while (((ch=getc(yyin))!=EOF)&&(isxdigit(ch))) {
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buf[nInBuf++]= ch;
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}
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}
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buf[nInBuf++]= '\0';
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if ((ch!=EOF)&&(!isspace(ch)))
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ungetc( ch, yyin );
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if (isFloat) {
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float tmp;
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if (sscanf(buf,"%g",&tmp)==1) {
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scanInt= tmp*XkbGeomPtsPerMM;
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return FLOAT;
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}
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}
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else if ( sscanf(buf,"%i",&scanInt)==1 )
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return INTEGER;
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fprintf(stderr,"Malformed number %s\n",buf);
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return ERROR;
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}
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int
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yylex(void)
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{
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int ch;
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int rtrn;
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do {
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ch = getc(yyin);
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if ( ch == '\n' ) {
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lineNum++;
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}
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else if ( ch=='/' ) { /* handle C++ style double-/ comments */
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int newch= getc(yyin);
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if (newch=='/') {
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do {
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ch= getc(yyin);
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} while ((ch!='\n')&&(ch!=EOF));
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lineNum++;
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}
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else if (newch!=EOF) {
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ungetc(newch,yyin);
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}
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}
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} while ((ch!=EOF)&&(isspace(ch)));
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if ( ch == '=' ) rtrn = EQUALS;
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else if ( ch == '+' ) rtrn = PLUS;
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else if ( ch == '-' ) rtrn = MINUS;
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else if ( ch == '/' ) rtrn = DIVIDE;
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else if ( ch == '*' ) rtrn = TIMES;
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else if ( ch == '{' ) rtrn = OBRACE;
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else if ( ch == '}' ) rtrn = CBRACE;
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else if ( ch == '(' ) rtrn = OPAREN;
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else if ( ch == ')' ) rtrn = CPAREN;
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else if ( ch == '[' ) rtrn = OBRACKET;
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else if ( ch == ']' ) rtrn = CBRACKET;
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else if ( ch == '.' ) rtrn = DOT;
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else if ( ch == ',' ) rtrn = COMMA;
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else if ( ch == ';' ) rtrn = SEMI;
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else if ( ch == '!' ) rtrn = EXCLAM;
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else if ( ch == '~' ) rtrn = INVERT;
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else if ( ch == '"' ) rtrn = yyGetString();
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||
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|
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;
|
||
|
|
}
|