projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 9e8e5516 C |
1 | /* pe_cmp.c - compare two presentation elements */ |
| 2 | ||
| 3 | #ifndef lint | |
| 4 | static char *rcsid = "$Header: /f/osi/psap/RCS/pe_cmp.c,v 7.1 91/02/22 09:36:10 mrose Interim $"; | |
| 5 | #endif | |
| 6 | ||
| 7 | /* | |
| 8 | * $Header: /f/osi/psap/RCS/pe_cmp.c,v 7.1 91/02/22 09:36:10 mrose Interim $ | |
| 9 | * | |
| 10 | * | |
| 11 | * $Log: pe_cmp.c,v $ | |
| 12 | * Revision 7.1 91/02/22 09:36:10 mrose | |
| 13 | * Interim 6.8 | |
| 14 | * | |
| 15 | * Revision 7.0 89/11/23 22:13:01 mrose | |
| 16 | * Release 6.0 | |
| 17 | * | |
| 18 | */ | |
| 19 | ||
| 20 | /* | |
| 21 | * NOTICE | |
| 22 | * | |
| 23 | * Acquisition, use, and distribution of this module and related | |
| 24 | * materials are subject to the restrictions of a license agreement. | |
| 25 | * Consult the Preface in the User's Manual for the full terms of | |
| 26 | * this agreement. | |
| 27 | * | |
| 28 | */ | |
| 29 | ||
| 30 | ||
| 31 | /* LINTLIBRARY */ | |
| 32 | ||
| 33 | #include <stdio.h> | |
| 34 | #include "psap.h" | |
| 35 | ||
| 36 | /* \f */ | |
| 37 | ||
| 38 | int pe_cmp (p, q) | |
| 39 | register PE p, | |
| 40 | q; | |
| 41 | { | |
| 42 | register int i; | |
| 43 | ||
| 44 | if (p == NULLPE) | |
| 45 | return (q ? 1 : 0); | |
| 46 | if (q == NULLPE | |
| 47 | || p -> pe_class != q -> pe_class | |
| 48 | || p -> pe_form != q -> pe_form | |
| 49 | || p -> pe_id != q -> pe_id) | |
| 50 | return 1; | |
| 51 | ||
| 52 | /* XXX: perhaps compare pe_context ??? */ | |
| 53 | ||
| 54 | switch (p -> pe_form) { | |
| 55 | case PE_FORM_ICONS: | |
| 56 | if (p -> pe_ilen != q -> pe_ilen) | |
| 57 | return 1; | |
| 58 | /* else fall */ | |
| 59 | case PE_FORM_PRIM: | |
| 60 | if (i = p -> pe_len) { | |
| 61 | if (i != q -> pe_len || PEDcmp (p -> pe_prim, q -> pe_prim, i)) | |
| 62 | return 1; | |
| 63 | } | |
| 64 | else | |
| 65 | if (q -> pe_len) | |
| 66 | return 1; | |
| 67 | return 0; | |
| 68 | ||
| 69 | case PE_FORM_CONS: | |
| 70 | for (p = p -> pe_cons, q = q -> pe_cons; | |
| 71 | p; | |
| 72 | p = p -> pe_next, q = q -> pe_next) | |
| 73 | if (pe_cmp (p, q)) | |
| 74 | return 1; | |
| 75 | return (q ? 1 : 0); | |
| 76 | ||
| 77 | default: /* XXX */ | |
| 78 | return 1; | |
| 79 | } | |
| 80 | } |