home *** CD-ROM | disk | FTP | other *** search
- #import "Tty.h"
- #import <stdio.h>
- #import <sys/file.h>
- #import <string.h>
- #import <libc.h>
-
- @implementation Tty
-
- + newDevice:(char *)devname access:(int)flags
- {
- int cc;
-
- self = [super new];
- fd = open(devname, flags, 0);
- if (fd<0) {
- fprintf(stderr,"Couldn't open %s\n",devname); perror("Unix error follows");
- [super free];
- return nil;
- }
- cc=ioctl(fd,TIOCGETP,&origState);
- currentState = origState;
- return self;
- }
-
-
- + newReadDevice:(char *)devname
- {
- return [self newDevice:devname access:O_RDONLY];
- }
-
- + newWriteDevice:(char *)devname
- {
- return [self newDevice:devname access:O_WRONLY];
- }
-
- + newReadWriteDevice:(char *)devname
- {
- return [self newDevice:devname access:O_RDWR];
- }
-
- + newExistingfd:(int)thisfd // for already existing file descriptor (eg. 0=stdin 1=stdout 2=stderr)
- {
- int cc;
-
- self = [super new];
- fd = thisfd;
- cc=ioctl(fd,TIOCGETP,&origState);
- currentState = origState;
- return self;
- }
-
- - reset
- {
- currentState = origState;
- [self activateState];
- return self;
- }
-
- - setEcho
- {
- currentState.sg_flags |= ECHO;
- [self activateState];
- return self;
- }
-
- - unSetEcho
- {
- currentState.sg_flags &= (~ECHO);
- [self activateState];
- return self;
- }
-
- - setRaw
- {
- currentState.sg_flags |= RAW;
- [self activateState];
- return self;
- }
-
- - unSetRaw
- {
- currentState.sg_flags &= (~RAW);
- [self activateState];
- return self;
- }
-
- - setCbreak
- {
- currentState.sg_flags |= CBREAK;
- [self activateState];
- return self;
- }
-
- - unSetCbreak
- {
- currentState.sg_flags &= (~CBREAK);
- [self activateState];
- return self;
- }
-
- - setCrmod
- {
- currentState.sg_flags |= CRMOD;
- [self activateState];
- return self;
- }
-
- - unSetCrmod
- {
- currentState.sg_flags &= (~CRMOD);
- [self activateState];
- return self;
- }
-
- - activateState
- {
- int cc;
- cc=ioctl(fd,TIOCSETP,¤tState);
- return self;
- }
-
-
- static struct setbps{
- int speed;
- int speedCode;
- } speeds[] = {{0,B0},{50,B50},{75,B75},{110,B110},
- {134,B134},{150,B150},{200,B200},
- {300,B300},{600,B600},{1200,B1200},
- {1800,B1800},{2400,B2400},
- {4800,B4800},{9600,B9600}};
- - setSpeed:(int)bps
- {
- int i;
- for (i=0; i<sizeof(speeds)/sizeof(struct setbps); i++) {
- if (bps==speeds[i].speed) {
- currentState.sg_ispeed = speeds[i].speedCode;
- currentState.sg_ospeed = speeds[i].speedCode;
- return [self activateState];
- }
- }
- /* if get to here, requested speed was illegal */
- fprintf(stderr,"Tty method setSpeed: illegal speed %d\n",bps);
- return self;
- }
-
- - (int) getSpeed
- {
- int i, sp;
- sp = currentState.sg_ospeed;
- for (i=0; i<sizeof(speeds)/sizeof(struct setbps); i++) {
- if (sp==speeds[i].speedCode)
- return speeds[i].speed;
- }
- fprintf(stderr,"Tty method getSpeed: currentState.sp_ospeed = %d unknown\n",sp);
- return 0;
- }
-
- - setParity:(int)parity
- {
- par=parity;
- switch (parity) {
- case EVENP:
- currentState.sg_flags |= EVENP;
- currentState.sg_flags &= (~ODDP);
- break;
- case ODDP:
- currentState.sg_flags |= ODDP;
- currentState.sg_flags &= (~EVENP);
- break;
- case NOPARITY:
- currentState.sg_flags |= EVENP;
- currentState.sg_flags |= ODDP;
- break;
- default:
- fprintf(stderr,"Tty method setParity: unrecognized parity:%d\n",parity);
- fprintf(stderr,"should be EVENP=%d, ODDP=%d, or NOPARITY=%d\n",EVENP,ODDP,NOPARITY);
- par=NOPARITY;
- }
- return [self activateState];
- }
-
- - (int) getParity
- {
- return par;
- }
-
- - (int) getfd
- {
- return fd;
- }
-
- - (int) queuedChars
- {
- int numchars;
- ioctl(fd,FIONREAD,&numchars);
- return numchars;
- }
-
- - (int) readInto:(char *)buf
- {
- int i;
- i = read(fd,buf,[self queuedChars]);
- buf[i]=0;
- return (i);
- }
-
- - (int) writeOut:(char *)buf
- {
- int i, len=strlen(buf);
- char *table;
- static char oddtab[128] = {
- 0x80, 0x01, 0x02, 0x83, 0x04, 0x85, 0x86, 0x07,
- 0x08, 0x89, 0x8a, 0x0b, 0x8c, 0x0d, 0x0e, 0x8f,
- 0x10, 0x91, 0x92, 0x13, 0x94, 0x15, 0x16, 0x97,
- 0x98, 0x19, 0x1a, 0x9b, 0x1c, 0x9d, 0x9e, 0x1f,
- 0x20, 0xa1, 0xa2, 0x23, 0xa4, 0x25, 0x26, 0xa7,
- 0xa8, 0x29, 0x2a, 0xab, 0x2c, 0xad, 0xae, 0x2f,
- 0xb0, 0x31, 0x32, 0xb3, 0x34, 0xb5, 0xb6, 0x37,
- 0x38, 0xb9, 0xba, 0x3b, 0xbc, 0x3d, 0x3e, 0xbf,
- 0x40, 0xc1, 0xc2, 0x43, 0xc4, 0x45, 0x46, 0xc7,
- 0xc8, 0x49, 0x4a, 0xcb, 0x4c, 0xcd, 0xce, 0x4f,
- 0xd0, 0x51, 0x52, 0xd3, 0x54, 0xd5, 0xd6, 0x57,
- 0x58, 0xd9, 0xda, 0x5b, 0xdc, 0x5d, 0x5e, 0xdf,
- 0xe0, 0x61, 0x62, 0xe3, 0x64, 0xe5, 0xe6, 0x67,
- 0x68, 0xe9, 0xea, 0x6b, 0xec, 0x6d, 0x6e, 0xef,
- 0x70, 0xf1, 0xf2, 0x73, 0xf4, 0x75, 0x76, 0xf7,
- 0xf8, 0x79, 0x7a, 0xfb, 0x7c, 0xfd, 0xfe, 0x7f};
- static char eventab[128] = {
- 0x00, 0x81, 0x82, 0x03, 0x84, 0x05, 0x06, 0x87,
- 0x88, 0x09, 0x0a, 0x8b, 0x0c, 0x8d, 0x8e, 0x0f,
- 0x90, 0x11, 0x12, 0x93, 0x14, 0x95, 0x96, 0x17,
- 0x18, 0x99, 0x9a, 0x1b, 0x9c, 0x1d, 0x1e, 0x9f,
- 0xa0, 0x21, 0x22, 0xa3, 0x24, 0xa5, 0xa6, 0x27,
- 0x28, 0xa9, 0xaa, 0x2b, 0xac, 0x2d, 0x2e, 0xaf,
- 0x30, 0xb1, 0xb2, 0x33, 0xb4, 0x35, 0x36, 0xb7,
- 0xb8, 0x39, 0x3a, 0xbb, 0x3c, 0xbd, 0xbe, 0x3f,
- 0xc0, 0x41, 0x42, 0xc3, 0x44, 0xc5, 0xc6, 0x47,
- 0x48, 0xc9, 0xca, 0x4b, 0xcc, 0x4d, 0x4e, 0xcf,
- 0x50, 0xd1, 0xd2, 0x53, 0xd4, 0x55, 0x56, 0xd7,
- 0xd8, 0x59, 0x5a, 0xdb, 0x5c, 0xdd, 0xde, 0x5f,
- 0x60, 0xe1, 0xe2, 0x63, 0xe4, 0x65, 0x66, 0xe7,
- 0xe8, 0x69, 0x6a, 0xeb, 0x6c, 0xed, 0xee, 0x6f,
- 0xf0, 0x71, 0x72, 0xf3, 0x74, 0xf5, 0xf6, 0x77,
- 0x78, 0xf9, 0xfa, 0x7b, 0xfc, 0x7d, 0x7e, 0xff};
- if (par==NOPARITY) {
- return write(fd,buf,len);
- }
- else
- table=(par==EVENP)? eventab : oddtab;
- for (i=0; i<len; i++) {
- if (write(fd, table+(*buf++), 1)<0)
- return -1;
- }
- return len;
- }
-
- @end
-