forked from Unidata/netcdf-c
-
Notifications
You must be signed in to change notification settings - Fork 0
/
ncbytes.c
213 lines (191 loc) · 4.48 KB
/
ncbytes.c
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
/* Copyright 2018, UCAR/Unidata and OPeNDAP, Inc.
See the COPYRIGHT file for more information. */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "ncbytes.h"
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
#define DEFAULTALLOC 1024
#define ALLOCINCR 1024
#define NCBYTESDEBUG 1
static int
ncbytesfail(void)
{
fflush(stdout);
fprintf(stderr,"bytebuffer failure\n");
fflush(stderr);
#ifdef NCBYTESDEBUG
abort();
#endif
return FALSE;
}
NCbytes*
ncbytesnew(void)
{
NCbytes* bb = (NCbytes*)malloc(sizeof(NCbytes));
if(bb == NULL) return (ncbytesfail(),NULL);
bb->alloc=0;
bb->length=0;
bb->content=NULL;
bb->nonextendible = 0;
return bb;
}
int
ncbytessetalloc(NCbytes* bb, unsigned long sz)
{
char* newcontent;
if(bb == NULL) return ncbytesfail();
if(sz == 0) {sz = (bb->alloc?2*bb->alloc:DEFAULTALLOC);}
if(bb->alloc >= sz) return TRUE;
if(bb->nonextendible) return ncbytesfail();
newcontent=(char*)calloc(sz,sizeof(char));
if(newcontent == NULL) ncbytesfail();
if(bb->alloc > 0 && bb->length > 0 && bb->content != NULL) {
memcpy((void*)newcontent,(void*)bb->content,sizeof(char)*bb->length);
}
if(bb->content != NULL) free(bb->content);
bb->content=newcontent;
bb->alloc=sz;
return TRUE;
}
EXTERNL void
ncbytesfree(NCbytes* bb)
{
if(bb == NULL) return;
if(!bb->nonextendible && bb->content != NULL) free(bb->content);
free(bb);
}
int
ncbytessetlength(NCbytes* bb, unsigned long sz)
{
if(bb == NULL) return ncbytesfail();
if(bb->length < sz) {
if(sz > bb->alloc) {if(!ncbytessetalloc(bb,sz)) return ncbytesfail();}
}
bb->length = sz;
return TRUE;
}
int
ncbytesfill(NCbytes* bb, char fill)
{
unsigned long i;
if(bb == NULL) return ncbytesfail();
for(i=0;i<bb->length;i++) bb->content[i] = fill;
return TRUE;
}
int
ncbytesget(NCbytes* bb, unsigned long index)
{
if(bb == NULL) return -1;
if(index >= bb->length) return -1;
return bb->content[index];
}
int
ncbytesset(NCbytes* bb, unsigned long index, char elem)
{
if(bb == NULL) return ncbytesfail();
if(index >= bb->length) return ncbytesfail();
bb->content[index] = elem;
return TRUE;
}
int
ncbytesappend(NCbytes* bb, char elem)
{
char s[2];
if(bb == NULL) return ncbytesfail();
s[0] = elem;
s[1] = '\0';
ncbytesappendn(bb,s,1);
return TRUE;
}
/* This assumes s is a null terminated string*/
int
ncbytescat(NCbytes* bb, const char* s)
{
if(s == NULL) {
return 1;
}
ncbytesappendn(bb,(void*)s,strlen(s)+1); /* include trailing null*/
/* back up over the trailing null*/
if(bb->length == 0) return ncbytesfail();
bb->length--;
return 1;
}
int
ncbytesappendn(NCbytes* bb, const void* elem, unsigned long n)
{
if(bb == NULL || elem == NULL) return ncbytesfail();
if(n == 0) {n = strlen((char*)elem);}
ncbytessetalloc(bb,bb->length+n+1);
memcpy((void*)&bb->content[bb->length],(void*)elem,n);
bb->length += n;
bb->content[bb->length] = '\0';
return TRUE;
}
int
ncbytesprepend(NCbytes* bb, char elem)
{
int i; /* do not make unsigned */
if(bb == NULL) return ncbytesfail();
if(bb->length >= bb->alloc) if(!ncbytessetalloc(bb,0)) return ncbytesfail();
/* could we trust memcpy? instead */
for(i=(int)bb->alloc;i>=1;i--) {bb->content[i]=bb->content[i-1];}
bb->content[0] = elem;
bb->length++;
return TRUE;
}
char*
ncbytesdup(NCbytes* bb)
{
char* result = (char*)malloc(bb->length+1);
memcpy((void*)result,(const void*)bb->content,bb->length);
result[bb->length] = '\0'; /* just in case it is a string*/
return result;
}
char*
ncbytesextract(NCbytes* bb)
{
char* result = bb->content;
bb->alloc = 0;
bb->length = 0;
bb->content = NULL;
return result;
}
int
ncbytessetcontents(NCbytes* bb, char* contents, unsigned long alloc)
{
if(bb == NULL) return ncbytesfail();
ncbytesclear(bb);
if(!bb->nonextendible && bb->content != NULL) free(bb->content);
bb->content = contents;
bb->length = 0;
bb->alloc = alloc;
bb->nonextendible = 1;
return 1;
}
/* Null terminate the byte string without extending its length */
int
ncbytesnull(NCbytes* bb)
{
ncbytesappend(bb,'\0');
bb->length--;
return 1;
}
/* Remove char at position i */
int
ncbytesremove(NCbytes* bb, unsigned long pos)
{
if(bb == NULL) return ncbytesfail();
if(bb->length <= pos) return ncbytesfail();
if(pos < (bb->length - 1)) {
int copylen = (bb->length - pos) - 1;
memmove(bb->content+pos,bb->content+pos+1,copylen);
}
bb->length--;
return TRUE;
}