1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
/* chunks.c */
/*****************************************************************************/
/* AS-Portierung */
/* */
/* Verwaltung von Adressbereichslisten */
/* */
/* Historie: 16. 5.1996 Grundsteinlegung */
/* 16. 8.1998 Min/Max-Ausgabe */
/* */
/*****************************************************************************/
#include "stdinc.h"
#include "strutil.h"
#include "chunks.h"
/*--------------------------------------------------------------------------*/
/* eine Chunkliste initialisieren */
void InitChunk(ChunkList *NChunk)
BEGIN
NChunk->RealLen=0;
NChunk->AllocLen=0;
NChunk->Chunks=Nil;
END
void ClearChunk(ChunkList *NChunk)
BEGIN
if (NChunk->AllocLen>0) free(NChunk->Chunks);
InitChunk(NChunk);
END
/*--------------------------------------------------------------------------*/
/* eine Chunkliste um einen Eintrag erweitern */
static Boolean Overlap(LargeWord Start1, LargeWord Len1, LargeWord Start2, LargeWord Len2)
BEGIN
return ((Start1==Start2)
OR ((Start2>Start1) AND (Start1+Len1>=Start2))
OR ((Start1>Start2) AND (Start2+Len2>=Start1)));
END
static void SetChunk(OneChunk *NChunk, LargeWord Start1, LargeWord Len1,
LargeWord Start2, LargeWord Len2)
BEGIN
NChunk->Start =min(Start1,Start2);
NChunk->Length=max(Start1+Len1-1,Start2+Len2-1)-NChunk->Start+1;
END
static void IncChunk(ChunkList *NChunk)
BEGIN
if (NChunk->RealLen+1>NChunk->AllocLen)
BEGIN
if (NChunk->RealLen==0)
NChunk->Chunks=(OneChunk *) malloc(sizeof(OneChunk));
else
NChunk->Chunks=(OneChunk *) realloc(NChunk->Chunks,sizeof(OneChunk)*(NChunk->RealLen+1));
NChunk->AllocLen=NChunk->RealLen+1;
END
END
Boolean AddChunk(ChunkList *NChunk, LargeWord NewStart, LargeWord NewLen, Boolean Warn)
BEGIN
Word z,f1=0,f2=0;
Boolean Found;
LongInt PartSum;
Boolean Result;
Result=False;
if (NewLen==0) return Result;
/* herausfinden, ob sich das neue Teil irgendwo mitanhaengen laesst */
Found=False;
for (z=0; z<NChunk->RealLen; z++)
if (Overlap(NewStart,NewLen,NChunk->Chunks[z].Start,NChunk->Chunks[z].Length))
BEGIN
Found=True; f1=z; break;
END
/* Fall 1: etwas gefunden : */
if (Found)
BEGIN
/* gefundene Chunk erweitern */
PartSum=NChunk->Chunks[f1].Length+NewLen;
SetChunk(NChunk->Chunks+f1,NewStart,NewLen,NChunk->Chunks[f1].Start,NChunk->Chunks[f1].Length);
if (Warn)
if (PartSum!=NChunk->Chunks[f1].Length) Result=True;
/* schauen, ob sukzessiv neue Chunks angebunden werden koennen */
do
BEGIN
Found=False;
for (z=1; z<NChunk->RealLen; z++)
if (z!=f1)
if (Overlap(NChunk->Chunks[z].Start,NChunk->Chunks[z].Length,NChunk->Chunks[f1].Start,NChunk->Chunks[f1].Length))
BEGIN
Found=True; f2=z; break;
END
if (Found)
BEGIN
SetChunk(NChunk->Chunks+f1,NChunk->Chunks[f1].Start,NChunk->Chunks[f1].Length,NChunk->Chunks[f2].Start,NChunk->Chunks[f2].Length);
NChunk->Chunks[f2]=NChunk->Chunks[--NChunk->RealLen];
END
END
while (Found);
END
/* ansonsten Feld erweitern und einschreiben */
else
BEGIN
IncChunk(NChunk);
NChunk->Chunks[NChunk->RealLen].Length=NewLen;
NChunk->Chunks[NChunk->RealLen].Start=NewStart;
NChunk->RealLen++;
END
return Result;
END
/*--------------------------------------------------------------------------*/
/* Ein Stueck wieder austragen */
void DeleteChunk(ChunkList *NChunk, LargeWord DelStart, LargeWord DelLen)
BEGIN
Word z;
LargeWord OStart;
if (DelLen==0) return;
z=0;
while (z<=NChunk->RealLen)
BEGIN
if (Overlap(DelStart,DelLen,NChunk->Chunks[z].Start,NChunk->Chunks[z].Length))
BEGIN
if (NChunk->Chunks[z].Start>=DelStart)
if (DelStart+DelLen>=NChunk->Chunks[z].Start+NChunk->Chunks[z].Length)
BEGIN
/* ganz loeschen */
NChunk->Chunks[z]=NChunk->Chunks[--NChunk->RealLen];
END
else
BEGIN
/* unten abschneiden */
OStart=NChunk->Chunks[z].Start; NChunk->Chunks[z].Start=DelStart+DelLen;
NChunk->Chunks[z].Start-=NChunk->Chunks[z].Start-OStart;
END
else
if (DelStart+DelLen>=NChunk->Chunks[z].Start+NChunk->Chunks[z].Length)
BEGIN
/* oben abschneiden */
NChunk->Chunks[z].Length=DelStart-NChunk->Chunks[z].Start;
/* wenn Laenge 0, ganz loeschen */
if (NChunk->Chunks[z].Length==0)
BEGIN
NChunk->Chunks[z]=NChunk->Chunks[--NChunk->RealLen];
END
END
else
BEGIN
/* teilen */
IncChunk(NChunk);
NChunk->Chunks[NChunk->RealLen].Start=DelStart+DelLen;
NChunk->Chunks[NChunk->RealLen].Length=NChunk->Chunks[z].Start+NChunk->Chunks[z].Length-NChunk->Chunks[NChunk->RealLen].Start;
NChunk->Chunks[z].Length=DelStart-NChunk->Chunks[z].Start;
END
END
z++;
END
END
/*--------------------------------------------------------------------------*/
/* Minimaladresse holen */
LargeWord ChunkMin(ChunkList *NChunk)
BEGIN
LongInt z;
LargeWord t=(LargeWord) -1;
if (NChunk->RealLen==0) return 0;
for (z=0; z<NChunk->RealLen; z++)
if (NChunk->Chunks[z].Start<t) t=NChunk->Chunks[z].Start;
return t;
END
/*--------------------------------------------------------------------------*/
/* Maximaladresse holen */
LargeWord ChunkMax(ChunkList *NChunk)
BEGIN
LongInt z;
LargeWord t=(LargeWord) 0;
if (NChunk->RealLen==0) return 0;
for (z=0; z<NChunk->RealLen; z++)
if (NChunk->Chunks[z].Start+NChunk->Chunks[z].Length-1>t)
t=NChunk->Chunks[z].Start+NChunk->Chunks[z].Length-1;
return t;
END
/*--------------------------------------------------------------------------*/
/* Menge holen */
LargeWord ChunkSum(ChunkList *NChunk)
BEGIN
LongInt z;
LargeWord Sum=0;
for (z=0; z<NChunk->RealLen; z++)
Sum+=NChunk->Chunks[z].Length;
return Sum;
END
void chunks_init(void)
BEGIN
END
|
