Annotation of libwww/Library/src/HTTee.c, revision 2.12
2.5 frystyk 1: /* HTee.c
2: ** TEE CLASS STREAM DEFINITION
3: **
2.9 frystyk 4: ** (c) COPYRIGHT MIT 1995.
2.5 frystyk 5: ** Please first read the full copyright statement in the file COPYRIGH.
2.1 timbl 6: **
7: ** The Tee class just writes to two streams. Easy.
8: ** See also the Black Hole stream which is even easier.
2.3 duns 9: **
10: ** HISTORY:
11: ** 8 Jul 94 FM Insulate free() from _free structure element.
12: **
2.1 timbl 13: */
14:
2.7 frystyk 15: /* Library include files */
16: #include "tcp.h"
17: #include "HTUtils.h"
2.1 timbl 18: #include "HTTee.h"
19:
20: /* Stream Object
21: ** ------------
22: */
23:
24: struct _HTStream {
25: CONST HTStreamClass * isa;
26:
27: HTStream * s1;
28: HTStream * s2;
29: };
30:
31:
2.11 frystyk 32: PRIVATE int HTTee_put_character (HTStream * me, char c)
2.1 timbl 33: {
2.8 frystyk 34: int ret1 = (*me->s1->isa->put_character)(me->s1, c);
35: int ret2 = (*me->s2->isa->put_character)(me->s2, c);
2.12 ! frystyk 36:
! 37: if (ret1 < 0) /* howcome 6 dec 95 */
! 38: return ret1;
! 39: if (ret2 < 0)
! 40: return ret2;
! 41: if (ret1 == 0)
! 42: return ret2;
! 43: return ret1;
! 44:
! 45: /*
2.8 frystyk 46: return (!(ret1+ret2) ? HT_OK :
47: (ret1==HT_ERROR || ret2==HT_ERROR) ? HT_ERROR :
48: HT_WOULD_BLOCK);
2.12 ! frystyk 49: */
2.1 timbl 50: }
2.8 frystyk 51:
2.11 frystyk 52: PRIVATE int HTTee_put_string (HTStream * me, CONST char* s)
2.1 timbl 53: {
2.8 frystyk 54: int ret1 = (*me->s1->isa->put_string)(me->s1, s);
55: int ret2 = (*me->s2->isa->put_string)(me->s2, s);
2.12 ! frystyk 56:
! 57: if (ret1 < 0) /* howcome 6 dec 95 */
! 58: return ret1;
! 59: if (ret2 < 0)
! 60: return ret2;
! 61: if (ret1 == 0)
! 62: return ret2;
! 63: return ret1;
! 64:
! 65: /*
2.8 frystyk 66: return (!(ret1+ret2) ? HT_OK :
67: (ret1==HT_ERROR || ret2==HT_ERROR) ? HT_ERROR :
68: HT_WOULD_BLOCK);
2.12 ! frystyk 69: */
2.1 timbl 70: }
2.8 frystyk 71:
2.11 frystyk 72: PRIVATE int HTTee_write (HTStream * me, CONST char* s, int l)
2.1 timbl 73: {
2.8 frystyk 74: int ret1 = (*me->s1->isa->put_block)(me->s1, s, l);
75: int ret2 = (*me->s2->isa->put_block)(me->s2, s, l);
2.12 ! frystyk 76:
! 77: if (ret1 < 0) /* howcome 6 dec 95 */
! 78: return ret1;
! 79: if (ret2 < 0)
! 80: return ret2;
! 81: if (ret1 == 0)
! 82: return ret2;
! 83: return ret1;
! 84:
! 85: /*
2.8 frystyk 86: return (!(ret1+ret2) ? HT_OK :
87: (ret1==HT_ERROR || ret2==HT_ERROR) ? HT_ERROR :
88: HT_WOULD_BLOCK);
2.12 ! frystyk 89: */
2.1 timbl 90: }
2.8 frystyk 91:
2.11 frystyk 92: PRIVATE int HTTee_flush (HTStream * me)
2.8 frystyk 93: {
94: int ret1 = (*me->s1->isa->flush)(me->s1);
95: int ret2 = (*me->s2->isa->flush)(me->s2);
2.12 ! frystyk 96:
! 97: if (ret1 < 0) /* howcome 6 dec 95 */
! 98: return ret1;
! 99: if (ret2 < 0)
! 100: return ret2;
! 101: if (ret1 == 0)
! 102: return ret2;
! 103: return ret1;
! 104:
! 105: /*
2.8 frystyk 106: return (!(ret1+ret2) ? HT_OK :
107: (ret1==HT_ERROR || ret2==HT_ERROR) ? HT_ERROR :
108: HT_WOULD_BLOCK);
2.12 ! frystyk 109: */
2.8 frystyk 110: }
111:
2.11 frystyk 112: PRIVATE int HTTee_free (HTStream * me)
2.1 timbl 113: {
2.8 frystyk 114: int ret1 = (*me->s1->isa->_free)(me->s1);
115: int ret2 = (*me->s2->isa->_free)(me->s2);
2.2 luotonen 116: free(me);
2.12 ! frystyk 117:
! 118: if (ret1 < 0) /* howcome 6 dec 95 */
! 119: return ret1;
! 120: if (ret2 < 0)
! 121: return ret2;
! 122: if (ret1 == 0)
! 123: return ret2;
! 124: return ret1;
! 125:
! 126: /*
2.8 frystyk 127: return (!(ret1+ret2) ? HT_OK :
128: (ret1==HT_ERROR || ret2==HT_ERROR) ? HT_ERROR :
129: HT_WOULD_BLOCK);
2.12 ! frystyk 130: */
2.1 timbl 131: }
2.8 frystyk 132:
2.11 frystyk 133: PRIVATE int HTTee_abort (HTStream * me, HTList * e)
2.1 timbl 134: {
135: (*me->s1->isa->abort)(me->s1, e);
136: (*me->s2->isa->abort)(me->s2, e);
2.2 luotonen 137: free(me);
2.8 frystyk 138: return HT_ERROR;
2.1 timbl 139: }
140:
141:
142: /* Tee stream
143: ** ----------
144: */
145: PRIVATE CONST HTStreamClass HTTeeClass =
146: {
147: "Tee",
2.8 frystyk 148: HTTee_flush,
2.1 timbl 149: HTTee_free,
150: HTTee_abort,
151: HTTee_put_character, HTTee_put_string,
152: HTTee_write
153: };
154:
155:
156: /* Tee creation
157: */
2.11 frystyk 158: PUBLIC HTStream * HTTee (HTStream * s1,HTStream * s2)
2.1 timbl 159: {
2.8 frystyk 160: HTStream * me = (HTStream *) calloc(1, sizeof(*me));
2.1 timbl 161: if (!me) outofmem(__FILE__, "HTTee");
162: me->isa = &HTTeeClass;
163: me->s1 = s1;
164: me->s2 = s2;
165: return me;
166: }
167:
168:
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