audio: add af_lavrresample, remove old resampling filters
[mplayer2.git] / bstr.h
blob4554df389f07f01927a6a37e21fadabddaf5859a
1 /*
2 * This file is part of MPlayer.
4 * MPlayer is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * MPlayer is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 #ifndef MPLAYER_BSTR_H
20 #define MPLAYER_BSTR_H
22 #include <stdint.h>
23 #include <stddef.h>
24 #include <string.h>
25 #include <stdbool.h>
27 #include "talloc.h"
29 /* NOTE: 'len' is size_t, but most string-handling functions below assume
30 * that input size has been sanity checked and len fits in an int.
32 struct bstr {
33 unsigned char *start;
34 size_t len;
37 // If str.start is NULL, return NULL.
38 static inline char *bstrdup0(void *talloc_ctx, struct bstr str)
40 return talloc_strndup(talloc_ctx, (char *)str.start, str.len);
43 // Return start = NULL iff that is true for the original.
44 static inline struct bstr bstrdup(void *talloc_ctx, struct bstr str)
46 struct bstr r = { NULL, str.len };
47 if (str.start)
48 r.start = talloc_memdup(talloc_ctx, str.start, str.len);
49 return r;
52 static inline struct bstr bstr(const unsigned char *s)
54 return (struct bstr){(unsigned char *)s, s ? strlen(s) : 0};
57 int bstrcmp(struct bstr str1, struct bstr str2);
58 int bstrcasecmp(struct bstr str1, struct bstr str2);
59 int bstrchr(struct bstr str, int c);
60 int bstrrchr(struct bstr str, int c);
61 int bstrcspn(struct bstr str, const char *reject);
63 int bstr_find(struct bstr haystack, struct bstr needle);
64 struct bstr *bstr_splitlines(void *talloc_ctx, struct bstr str);
65 struct bstr bstr_getline(struct bstr str, struct bstr *rest);
66 struct bstr bstr_lstrip(struct bstr str);
67 struct bstr bstr_strip(struct bstr str);
68 struct bstr bstr_split(struct bstr str, const char *sep, struct bstr *rest);
69 struct bstr bstr_splice(struct bstr str, int start, int end);
70 long long bstrtoll(struct bstr str, struct bstr *rest, int base);
71 double bstrtod(struct bstr str, struct bstr *rest);
72 void bstr_lower(struct bstr str);
73 int bstr_sscanf(struct bstr str, const char *format, ...);
75 // Decode the UTF-8 code point at the start of the string,, and return the
76 // character.
77 // After calling this function, *out_next will point to the next character.
78 // out_next can be NULL.
79 // On error, -1 is returned, and *out_next is not modified.
80 int bstr_decode_utf8(struct bstr str, struct bstr *out_next);
82 // Return the length of the UTF-8 sequence that starts with the given byte.
83 // Given a string char *s, the next UTF-8 code point is to be expected at
84 // s + bstr_parse_utf8_code_length(s[0])
85 // On error, -1 is returned. On success, it returns a value in the range [1, 4].
86 int bstr_parse_utf8_code_length(unsigned char b);
88 // If s starts with prefix, return true and return the rest of the string in s.
89 bool bstr_eatstart(struct bstr *s, struct bstr prefix);
91 static inline struct bstr bstr_cut(struct bstr str, int n)
93 if (n > str.len)
94 n = str.len;
95 return (struct bstr){str.start + n, str.len - n};
98 static inline bool bstr_startswith(struct bstr str, struct bstr prefix)
100 if (str.len < prefix.len)
101 return false;
102 return !memcmp(str.start, prefix.start, prefix.len);
105 static inline bool bstr_startswith0(struct bstr str, const char *prefix)
107 return bstr_startswith(str, bstr(prefix));
110 static inline bool bstr_endswith(struct bstr str, struct bstr suffix)
112 if (str.len < suffix.len)
113 return false;
114 return !memcmp(str.start + str.len - suffix.len, suffix.start, suffix.len);
117 static inline bool bstr_endswith0(struct bstr str, const char *suffix)
119 return bstr_endswith(str, bstr(suffix));
122 static inline int bstrcmp0(struct bstr str1, const char *str2)
124 return bstrcmp(str1, bstr(str2));
127 static inline int bstrcasecmp0(struct bstr str1, const char *str2)
129 return bstrcasecmp(str1, bstr(str2));
132 static inline int bstr_find0(struct bstr haystack, const char *needle)
134 return bstr_find(haystack, bstr(needle));
137 static inline int bstr_eatstart0(struct bstr *s, char *prefix)
139 return bstr_eatstart(s, bstr(prefix));
143 // create a pair (not single value!) for "%.*s" printf syntax
144 #define BSTR_P(bstr) (int)((bstr).len), (bstr).start
146 #define WHITESPACE " \f\n\r\t\v"
148 #endif /* MPLAYER_BSTR_H */