Welcome to little lamb

Code » limb » master » tree

[master] / src / doc / bytestr.h / byte_chr.3.md 

 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
% limb manual
% byte_chr(3)
% limb 0.1.0
% 2023-07-24

# NAME

byte_chr, byte_rchr, byte_in - locate a byte within a byte array

# SYNOPSIS

    #include <limb/bytestr.h>

```pre hl
size_t byte_chr(const char *<em>haystack</em>, size_t <em>hlen</em>, int <em>c</em>)
size_t byte_rchr(const char *<em>haystack</em>, size_t <em>hlen</em>, int <em>c</em>)
size_t byte_in(const char *haystack, size_t hlen, const char *sep, size_t slen)
```

# DESCRIPTION

The `byte_chr`() function looks for the first occurrence of byte `c` in the
byte array `haystack` of length `hlen`.

The `byte_rchr`() function looks for the last occurrence of a byte `c` in the
byte array `haystack` of length `hlen`.

The `byte_in`() function looks for the first occurrence of any of the `slen`
bytes in `sep` in the array `haystack` of length `hlen`.

# RETURN VALUE

The `byte_chr`() and `byte_rchr`() functions return the offset of the first or
last occurrence of byte `c` in the byte array `haystack`, respectively, when
found. Otherwise they return `hlen`.

The `byte_in`() function returns the offset of the first occurrence of any of
the `slen` bytes in `sep` in the array `haystack`, or `hlen` when not found.