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
|
/*
* Copyright (c) 2015 Andrew Kelley
*
* This file is part of zig, which is MIT licensed.
* See http://opensource.org/licenses/MIT
*/
#ifndef ZIG_BUFFER_HPP
#define ZIG_BUFFER_HPP
#include "list.hpp"
#include <assert.h>
#include <stdint.h>
#define BUF_INIT {{0}}
struct Buf {
ZigList<char> list;
};
Buf *buf_sprintf(const char *format, ...)
__attribute__ ((format (printf, 1, 2)));
static inline int buf_len(Buf *buf) {
return buf->list.length - 1;
}
static inline char *buf_ptr(Buf *buf) {
return buf->list.items;
}
static inline void buf_resize(Buf *buf, int new_len) {
buf->list.resize(new_len + 1);
buf->list.at(buf_len(buf)) = 0;
}
static inline Buf *buf_alloc(void) {
Buf *buf = allocate<Buf>(1);
buf_resize(buf, 0);
return buf;
}
static inline Buf *buf_alloc_fixed(int size) {
Buf *buf = allocate<Buf>(1);
buf_resize(buf, size);
return buf;
}
static inline void buf_deinit(Buf *buf) {
buf->list.deinit();
}
static inline void buf_init_from_mem(Buf *buf, const char *ptr, int len) {
buf->list.resize(len + 1);
memcpy(buf_ptr(buf), ptr, len);
buf->list.at(buf_len(buf)) = 0;
}
static inline void buf_init_from_str(Buf *buf, const char *str) {
buf_init_from_mem(buf, str, strlen(str));
}
static inline void buf_init_from_buf(Buf *buf, Buf *other) {
buf_init_from_mem(buf, buf_ptr(other), buf_len(other));
}
static inline Buf *buf_create_from_mem(const char *ptr, int len) {
Buf *buf = allocate<Buf>(1);
buf_init_from_mem(buf, ptr, len);
return buf;
}
static inline Buf *buf_create_from_str(const char *str) {
return buf_create_from_mem(str, strlen(str));
}
static inline Buf *buf_slice(Buf *in_buf, int start, int end) {
assert(start >= 0);
assert(end >= 0);
assert(start < buf_len(in_buf));
assert(end <= buf_len(in_buf));
Buf *out_buf = allocate<Buf>(1);
out_buf->list.resize(end - start + 1);
memcpy(buf_ptr(out_buf), buf_ptr(in_buf) + start, end - start);
out_buf->list.at(buf_len(out_buf)) = 0;
return out_buf;
}
static inline void buf_append_mem(Buf *buf, const char *mem, int mem_len) {
assert(mem_len >= 0);
int old_len = buf_len(buf);
buf_resize(buf, old_len + mem_len);
memcpy(buf_ptr(buf) + old_len, mem, mem_len);
buf->list.at(buf_len(buf)) = 0;
}
static inline void buf_append_str(Buf *buf, const char *str) {
buf_append_mem(buf, str, strlen(str));
}
static inline void buf_append_buf(Buf *buf, Buf *append_buf) {
buf_append_mem(buf, buf_ptr(append_buf), buf_len(append_buf));
}
static inline void buf_append_char(Buf *buf, uint8_t c) {
buf_append_mem(buf, (const char *)&c, 1);
}
void buf_appendf(Buf *buf, const char *format, ...)
__attribute__ ((format (printf, 2, 3)));
static inline bool buf_eql_mem(Buf *buf, const char *mem, int mem_len) {
if (buf_len(buf) != mem_len)
return false;
return memcmp(buf_ptr(buf), mem, mem_len) == 0;
}
static inline bool buf_eql_str(Buf *buf, const char *str) {
return buf_eql_mem(buf, str, strlen(str));
}
static inline bool buf_eql_buf(Buf *buf, Buf *other) {
return buf_eql_mem(buf, buf_ptr(other), buf_len(other));
}
static inline void buf_splice_buf(Buf *buf, int start, int end, Buf *other) {
if (start != end)
zig_panic("TODO buf_splice_buf");
int old_buf_len = buf_len(buf);
buf_resize(buf, old_buf_len + buf_len(other));
memmove(buf_ptr(buf) + start + buf_len(other), buf_ptr(buf) + start, old_buf_len - start);
memcpy(buf_ptr(buf) + start, buf_ptr(other), buf_len(other));
}
// TODO this method needs work
static inline Buf *buf_dirname(Buf *buf) {
if (buf_len(buf) <= 2)
zig_panic("TODO buf_dirname small");
int last_index = buf_len(buf) - 1;
if (buf_ptr(buf)[buf_len(buf) - 1] == '/') {
last_index = buf_len(buf) - 2;
}
for (int i = last_index; i >= 0; i -= 1) {
uint8_t c = buf_ptr(buf)[i];
if (c == '/') {
return buf_slice(buf, 0, i);
}
}
return buf_create_from_mem("", 0);
}
static inline uint32_t buf_hash(Buf *buf) {
// FNV 32-bit hash
uint32_t h = 2166136261;
for (int i = 0; i < buf_len(buf); i += 1) {
h = h ^ ((uint8_t)buf->list.at(i));
h = h * 16777619;
}
return h;
}
#endif
|
