comparison: src/protocols/zephyr/ZReadAscii.c
src/protocols/zephyr/ZReadAscii.c
- branch
- cpw.khc.msnp14
- changeset 20472
- 6a6d2ef151e6
- parent 13912
- 463b4fa9f067
- parent 20469
- b2836a24d81e
- child 20473
- 91e1b3a49d10
equal
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| 13912:463b4fa9f067 | 20472:6a6d2ef151e6 |
|---|---|
| 1 /* This file is part of the Project Athena Zephyr Notification System. | |
| 2 * It contains source for the ZReadAscii function. | |
| 3 * | |
| 4 * Created by: Robert French | |
| 5 * | |
| 6 * Copyright (c) 1987, 1990 by the Massachusetts Institute of Technology. | |
| 7 * For copying and distribution information, see the file | |
| 8 * "mit-copyright.h". | |
| 9 */ | |
| 10 | |
| 11 #include "internal.h" | |
| 12 | |
| 13 #define Z_cnvt_xtoi(c) ((temp=(c)-'0'),(temp<10)?temp:((temp-='A'-'9'-1),(temp<16)?temp:-1)) | |
| 14 | |
| 15 Code_t ZReadAscii(ptr, len, field, num) | |
| 16 char *ptr; | |
| 17 int len; | |
| 18 unsigned char *field; | |
| 19 int num; | |
| 20 { | |
| 21 int i; | |
| 22 unsigned int hexbyte; | |
| 23 register int c1, c2; | |
| 24 register unsigned int temp; | |
| 25 | |
| 26 for (i=0;i<num;i++) { | |
| 27 if (*ptr == ' ') { | |
| 28 ptr++; | |
| 29 if (--len < 0) | |
| 30 return ZERR_BADFIELD; | |
| 31 } | |
| 32 if (ptr[0] == '0' && ptr[1] == 'x') { | |
| 33 ptr += 2; | |
| 34 len -= 2; | |
| 35 if (len < 0) | |
| 36 return ZERR_BADFIELD; | |
| 37 } | |
| 38 c1 = Z_cnvt_xtoi(ptr[0]); | |
| 39 if (c1 < 0) | |
| 40 return ZERR_BADFIELD; | |
| 41 c2 = Z_cnvt_xtoi(ptr[1]); | |
| 42 if (c2 < 0) | |
| 43 return ZERR_BADFIELD; | |
| 44 hexbyte = (c1 << 4) | c2; | |
| 45 field[i] = hexbyte; | |
| 46 ptr += 2; | |
| 47 len -= 2; | |
| 48 if (len < 0) | |
| 49 return ZERR_BADFIELD; | |
| 50 } | |
| 51 | |
| 52 return *ptr ? ZERR_BADFIELD : ZERR_NONE; | |
| 53 } | |
| 54 | |
| 55 Code_t ZReadAscii32(ptr, len, value_ptr) | |
| 56 char *ptr; | |
| 57 int len; | |
| 58 unsigned long *value_ptr; | |
| 59 { | |
| 60 unsigned char buf[4]; | |
| 61 Code_t retval; | |
| 62 | |
| 63 retval = ZReadAscii(ptr, len, buf, 4); | |
| 64 if (retval != ZERR_NONE) | |
| 65 return retval; | |
| 66 *value_ptr = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3]; | |
| 67 return ZERR_NONE; | |
| 68 } | |
| 69 | |
| 70 Code_t ZReadAscii16(ptr, len, value_ptr) | |
| 71 char *ptr; | |
| 72 int len; | |
| 73 unsigned short *value_ptr; | |
| 74 { | |
| 75 unsigned char buf[2]; | |
| 76 Code_t retval; | |
| 77 | |
| 78 retval = ZReadAscii(ptr, len, buf, 2); | |
| 79 if (retval != ZERR_NONE) | |
| 80 return retval; | |
| 81 *value_ptr = (buf[0] << 8) | buf[1]; | |
| 82 return ZERR_NONE; | |
| 83 } | |
| 84 |
