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
|
/*
Copyright 2006,2007,2008,2012 Martin Pärtel <martin.partel@gmail.com>
This file is part of bindfs.
bindfs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
bindfs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with bindfs. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef INC_BINDFS_MISC_H
#define INC_BINDFS_MISC_H
#include <stdbool.h>
#include <stdlib.h>
#include "arena.h"
/* Counts the number of times ch occurs in s. */
int count_chars(const char *s, char ch);
/* Counts the number of times sub occurs in s. */
int count_substrs(const char *s, const char *sub);
/* Creates a duplicate string of all the characters in s before
an end character is reached. */
char *strdup_until(const char *s, const char *endchars);
/* Like sprintf but writes to an automatically malloc'ed buffer. */
char *sprintf_new(const char *format, ...);
/* Returns a pointer to the first character after the
final slash of path, or path itself if it contains no slashes.
If the path ends with a slash, then the result is an empty
string.
Returns NULL if path is NULL. */
const char *my_basename(const char *path);
/* A thread-safe version of dirname, with slightly different behavior.
If path is ".", returns "..".
If path is "/", returns "/".
If path has an initial slash but no other slashes, returns "/".
If path contains a slash, replaces the last slash with a '\0' and returns path.
Otherwise, returns ".". */
const char *my_dirname(char *path);
/* Returns true if the initial path components of 'path' are the path components of 'prefix'.
Assumes 'strlen(prefix) == prefix_len'. */
bool path_starts_with(const char *path, const char* prefix, size_t prefix_len);
/* Filters arguments in comma-separated lists prefixed by '-o'.
* Allocates 'new_argv' and its strings, as well as some temporary data, into 'arena'. */
void filter_o_opts(
bool (*keep)(const char* opt),
int argc,
const char * const *argv,
int *new_argc,
char ***new_argv,
struct arena *arena
);
/* Reallocs `*array` (may be NULL) to be at least one larger
than `*capacity` (may be 0) and stores the new capacity
in `*capacity`. */
#define grow_array(array, capacity, member_size) grow_array_impl((void**)(array), (capacity), (member_size))
void grow_array_impl(void **array, int *capacity, int member_size);
/* Returns 1 on success, 0 on syntax error. */
int parse_byte_count(const char *str, double *result);
/* An allocation of contiguous memory with convenient functions for
growing it and appending to it. */
struct memory_block {
char *ptr;
size_t size;
size_t capacity;
};
#define MEMORY_BLOCK_INITIALIZER { NULL, 0, 0 }
void init_memory_block(struct memory_block *a, size_t initial_capacity);
void grow_memory_block(struct memory_block *a, size_t amount);
int append_to_memory_block(struct memory_block *a, const void *src, size_t src_size);
void free_memory_block(struct memory_block *a);
#define MEMORY_BLOCK_GET(a, offset) (&(a).ptr[(offset)])
#endif
|
