forked from json-c/json-c
/
test_printbuf.c
184 lines (149 loc) · 5.22 KB
/
test_printbuf.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
#include <assert.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include "debug.h"
#include "printbuf.h"
static void test_basic_printbuf_memset(void);
static void test_printbuf_memset_length(void);
#ifndef __func__
/* VC++ compat */
#define __func__ __FUNCTION__
#endif
static void test_basic_printbuf_memset()
{
struct printbuf *pb;
printf("%s: starting test\n", __func__);
pb = printbuf_new();
sprintbuf(pb, "blue:%d", 1);
printbuf_memset(pb, -1, 'x', 52);
printf("Buffer contents:%.*s\n", printbuf_length(pb), pb->buf);
printbuf_free(pb);
printf("%s: end test\n", __func__);
}
static void test_printbuf_memset_length()
{
struct printbuf *pb;
printf("%s: starting test\n", __func__);
pb = printbuf_new();
printbuf_memset(pb, -1, ' ', 0);
printbuf_memset(pb, -1, ' ', 0);
printbuf_memset(pb, -1, ' ', 0);
printbuf_memset(pb, -1, ' ', 0);
printbuf_memset(pb, -1, ' ', 0);
printf("Buffer length: %d\n", printbuf_length(pb));
printbuf_memset(pb, -1, ' ', 2);
printbuf_memset(pb, -1, ' ', 4);
printbuf_memset(pb, -1, ' ', 6);
printf("Buffer length: %d\n", printbuf_length(pb));
printbuf_memset(pb, -1, ' ', 6);
printf("Buffer length: %d\n", printbuf_length(pb));
printbuf_memset(pb, -1, ' ', 8);
printbuf_memset(pb, -1, ' ', 10);
printbuf_memset(pb, -1, ' ', 10);
printbuf_memset(pb, -1, ' ', 10);
printbuf_memset(pb, -1, ' ', 20);
printf("Buffer length: %d\n", printbuf_length(pb));
// No length change should occur
printbuf_memset(pb, 0, 'x', 30);
printf("Buffer length: %d\n", printbuf_length(pb));
// This should extend it by one.
printbuf_memset(pb, 0, 'x', printbuf_length(pb) + 1);
printf("Buffer length: %d\n", printbuf_length(pb));
printbuf_free(pb);
printf("%s: end test\n", __func__);
}
static void test_printbuf_memappend(int *before_resize);
static void test_printbuf_memappend(int *before_resize)
{
struct printbuf *pb;
int initial_size;
printf("%s: starting test\n", __func__);
pb = printbuf_new();
printf("Buffer length: %d\n", printbuf_length(pb));
initial_size = pb->size;
while(pb->size == initial_size)
{
printbuf_memappend_fast(pb, "x", 1);
}
*before_resize = printbuf_length(pb) - 1;
printf("Appended %d bytes for resize: [%s]\n", *before_resize + 1, pb->buf);
printbuf_reset(pb);
printbuf_memappend_fast(pb, "bluexyz123", 3);
printf("Partial append: %d, [%s]\n", printbuf_length(pb), pb->buf);
char with_nulls[] = { 'a', 'b', '\0', 'c' };
printbuf_reset(pb);
printbuf_memappend_fast(pb, with_nulls, (int)sizeof(with_nulls));
printf("With embedded \\0 character: %d, [%s]\n", printbuf_length(pb), pb->buf);
printbuf_free(pb);
pb = printbuf_new();
char *data = malloc(*before_resize);
memset(data, 'X', *before_resize);
printbuf_memappend_fast(pb, data, *before_resize);
printf("Append to just before resize: %d, [%s]\n", printbuf_length(pb), pb->buf);
free(data);
printbuf_free(pb);
pb = printbuf_new();
data = malloc(*before_resize + 1);
memset(data, 'X', *before_resize + 1);
printbuf_memappend_fast(pb, data, *before_resize + 1);
printf("Append to just after resize: %d, [%s]\n", printbuf_length(pb), pb->buf);
free(data);
printbuf_free(pb);
#define SA_TEST_STR "XXXXXXXXXXXXXXXX"
pb = printbuf_new();
printbuf_strappend(pb, SA_TEST_STR);
printf("Buffer size after printbuf_strappend(): %d, [%s]\n", printbuf_length(pb), pb->buf);
printbuf_free(pb);
#undef SA_TEST_STR
printf("%s: end test\n", __func__);
}
static void test_sprintbuf(int before_resize);
static void test_sprintbuf(int before_resize)
{
struct printbuf *pb;
const char *max_char = "if string is greater than stack buffer, then use dynamic string"
" with vasprintf. Note: some implementation of vsnprintf return -1 "
" if output is truncated whereas some return the number of bytes that "
" would have been written - this code handles both cases.";
printf("%s: starting test\n", __func__);
pb = printbuf_new();
printf("Buffer length: %d\n", printbuf_length(pb));
char *data = malloc(before_resize + 1 + 1);
memset(data, 'X', before_resize + 1 + 1);
data[before_resize + 1] = '\0';
sprintbuf(pb, "%s", data);
free(data);
printf("sprintbuf to just after resize(%d+1): %d, [%s], strlen(buf)=%d\n", before_resize, printbuf_length(pb), pb->buf, (int)strlen(pb->buf));
printbuf_reset(pb);
sprintbuf(pb, "plain");
printf("%d, [%s]\n", printbuf_length(pb), pb->buf);
sprintbuf(pb, "%d", 1);
printf("%d, [%s]\n", printbuf_length(pb), pb->buf);
sprintbuf(pb, "%d", INT_MAX);
printf("%d, [%s]\n", printbuf_length(pb), pb->buf);
sprintbuf(pb, "%d", INT_MIN);
printf("%d, [%s]\n", printbuf_length(pb), pb->buf);
sprintbuf(pb, "%s", "%s");
printf("%d, [%s]\n", printbuf_length(pb), pb->buf);
sprintbuf(pb, max_char);
printf("%d, [%s]\n", printbuf_length(pb), pb->buf);
printbuf_free(pb);
printf("%s: end test\n", __func__);
}
int main(int argc, char **argv)
{
int before_resize = 0;
MC_SET_DEBUG(1);
test_basic_printbuf_memset();
printf("========================================\n");
test_printbuf_memset_length();
printf("========================================\n");
test_printbuf_memappend(&before_resize);
printf("========================================\n");
test_sprintbuf(before_resize);
printf("========================================\n");
return 0;
}