projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 04c6839a WJ |
1 | #include "quipu/util.h" |
| 2 | #include "quipu/attrvalue.h" | |
| 3 | #include "quipu/dsp.h" /* for ds_error.h */ | |
| 4 | #include "quipu/ds_error.h" | |
| 5 | ||
| 6 | extern LLog * log_dsap; | |
| 7 | ||
| 8 | AV_Sequence avs_merge (a,b) | |
| 9 | AV_Sequence a,b; | |
| 10 | { | |
| 11 | register AV_Sequence aptr, bptr, result, trail, tmp; | |
| 12 | ||
| 13 | if ( a == NULLAV ) | |
| 14 | return (b); | |
| 15 | if ( b == NULLAV ) | |
| 16 | return (a); | |
| 17 | ||
| 18 | /* start sequence off, make sure 'a' is the first */ | |
| 19 | switch (avs_cmp_comp (a,b)) { | |
| 20 | default: | |
| 21 | LLOG (log_dsap,LLOG_EXCEPTIONS,("matching failed in avs_merge")) ; | |
| 22 | /* continue as if equal */ | |
| 23 | ||
| 24 | case 0: /* equal */ | |
| 25 | result = a; | |
| 26 | aptr = a->avseq_next; | |
| 27 | bptr = b->avseq_next; | |
| 28 | avs_comp_free (b); | |
| 29 | break; | |
| 30 | case -1: | |
| 31 | result = b; | |
| 32 | aptr = a; | |
| 33 | bptr = b->avseq_next; | |
| 34 | break; | |
| 35 | case 2: /* no compare function defined - treat as if a > b */ | |
| 36 | case 1: | |
| 37 | result = a; | |
| 38 | aptr = a->avseq_next; | |
| 39 | bptr = b; | |
| 40 | break; | |
| 41 | } | |
| 42 | ||
| 43 | trail = result; | |
| 44 | while ( (aptr != NULLAV) && (bptr != NULLAV) ) { | |
| 45 | ||
| 46 | switch (avs_cmp_comp (aptr,bptr)) { | |
| 47 | default: | |
| 48 | LLOG (log_dsap,LLOG_EXCEPTIONS,("matching failed in avs_merge (2)")) ; | |
| 49 | /* continue as if equal */ | |
| 50 | ||
| 51 | case 0: /* equal */ | |
| 52 | trail->avseq_next = aptr; | |
| 53 | trail = aptr; | |
| 54 | tmp = bptr->avseq_next; | |
| 55 | avs_comp_free (bptr); | |
| 56 | aptr = aptr->avseq_next; | |
| 57 | bptr = tmp; | |
| 58 | break; | |
| 59 | case -1: | |
| 60 | trail->avseq_next = bptr; | |
| 61 | trail = bptr; | |
| 62 | bptr = bptr->avseq_next; | |
| 63 | break; | |
| 64 | case 2: /* no compare function defined - treat as if a > b */ | |
| 65 | case 1: | |
| 66 | trail->avseq_next = aptr; | |
| 67 | trail = aptr; | |
| 68 | aptr = aptr->avseq_next; | |
| 69 | break; | |
| 70 | } | |
| 71 | } | |
| 72 | if (aptr == NULLAV) | |
| 73 | trail->avseq_next = bptr; | |
| 74 | else | |
| 75 | trail->avseq_next = aptr; | |
| 76 | ||
| 77 | return (result); | |
| 78 | } | |
| 79 | ||
| 80 |