/usr/include/htslib/hts.h is in libhts-dev 1.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 | /* hts.h -- format-neutral I/O, indexing, and iterator API functions.
Copyright (C) 2012-2014 Genome Research Ltd.
Copyright (C) 2012 Broad Institute.
Author: Heng Li <lh3@sanger.ac.uk>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE. */
#ifndef HTSLIB_HTS_H
#define HTSLIB_HTS_H
#include <stddef.h>
#include <stdint.h>
#ifndef HTS_BGZF_TYPEDEF
typedef struct BGZF BGZF;
#define HTS_BGZF_TYPEDEF
#endif
struct cram_fd;
struct hFILE;
#ifndef KSTRING_T
#define KSTRING_T kstring_t
typedef struct __kstring_t {
size_t l, m;
char *s;
} kstring_t;
#endif
#ifndef kroundup32
#define kroundup32(x) (--(x), (x)|=(x)>>1, (x)|=(x)>>2, (x)|=(x)>>4, (x)|=(x)>>8, (x)|=(x)>>16, ++(x))
#endif
/**
* hts_expand() - expands memory block pointed to by $ptr;
* hts_expand0() the latter sets the newly allocated part to 0.
*
* @param n requested number of elements of type type_t
* @param m size of memory allocated
*/
#define hts_expand(type_t, n, m, ptr) if ((n) > (m)) { \
(m) = (n); kroundup32(m); \
(ptr) = (type_t*)realloc((ptr), (m) * sizeof(type_t)); \
}
#define hts_expand0(type_t, n, m, ptr) if ((n) > (m)) { \
int t = (m); (m) = (n); kroundup32(m); \
(ptr) = (type_t*)realloc((ptr), (m) * sizeof(type_t)); \
memset(((type_t*)ptr)+t,0,sizeof(type_t)*((m)-t)); \
}
/************
* File I/O *
************/
typedef struct {
uint32_t is_bin:1, is_write:1, is_be:1, is_cram:1, is_compressed:2, is_kstream:1, dummy:25;
int64_t lineno;
kstring_t line;
char *fn, *fn_aux;
union {
BGZF *bgzf;
struct cram_fd *cram;
struct hFILE *hfile;
void *voidp;
} fp;
} htsFile;
/**********************
* Exported functions *
**********************/
extern int hts_verbose;
/*! @abstract Table for converting a nucleotide character to the 4-bit encoding. */
extern const unsigned char seq_nt16_table[256];
/*! @abstract Table for converting a 4-bit encoded nucleotide to a letter. */
extern const char seq_nt16_str[];
#ifdef __cplusplus
extern "C" {
#endif
/*!
@abstract Get the htslib version number
@return For released versions, a string like "N.N[.N]"; or git describe
output if using a library built within a Git repository.
*/
const char *hts_version(void);
/*!
@abstract Open a SAM/BAM/CRAM/VCF/BCF/etc file
@param fn The file name or "-" for stdin/stdout
@param mode Mode matching /[rwa][bcuz0-9]+/
@discussion
With 'r' opens for reading; any further format mode letters are ignored
as the format is detected by checking the first few bytes or BGZF blocks
of the file. With 'w' or 'a' opens for writing or appending, with format
specifier letters:
b binary format (BAM, BCF, etc) rather than text (SAM, VCF, etc)
c CRAM format
u uncompressed
z compressed
[0-9] zlib compression level
Note that there is a distinction between 'u' and '0': the first yields
plain uncompressed output whereas the latter outputs uncompressed data
wrapped in the zlib format.
@example
[rw]b .. compressed BCF, BAM, FAI
[rw]u .. uncompressed BCF
[rw]z .. compressed VCF
[rw] .. uncompressed VCF
*/
htsFile *hts_open(const char *fn, const char *mode);
/*!
@abstract Close a file handle, flushing buffered data for output streams
@param fp The file handle to be closed
@return 0 for success, or negative if an error occurred.
*/
int hts_close(htsFile *fp);
int hts_getline(htsFile *fp, int delimiter, kstring_t *str);
char **hts_readlines(const char *fn, int *_n);
/*!
@abstract Parse comma-separated list or read list from a file
@param list File name or comma-separated list
@param is_file
@param _n Size of the output array (number of items read)
@return NULL on failure or pointer to newly allocated array of
strings
*/
char **hts_readlist(const char *fn, int is_file, int *_n);
/*!
@abstract Create extra threads to aid compress/decompression for this file
@param fp The file handle
@param n The number of worker threads to create
@return 0 for success, or negative if an error occurred.
@notes THIS THREADING API IS LIKELY TO CHANGE IN FUTURE.
*/
int hts_set_threads(htsFile *fp, int n);
/*!
@abstract Set .fai filename for a file opened for reading
@return 0 for success, negative on failure
@discussion
Called before *_hdr_read(), this provides the name of a .fai file
used to provide a reference list if the htsFile contains no @SQ headers.
*/
int hts_set_fai_filename(htsFile *fp, const char *fn_aux);
#ifdef __cplusplus
}
#endif
/************
* Indexing *
************/
/*!
These HTS_IDX_* macros are used as special tid values for hts_itr_query()/etc,
producing iterators operating as follows:
- HTS_IDX_NOCOOR iterates over unmapped reads sorted at the end of the file
- HTS_IDX_START iterates over the entire file
- HTS_IDX_REST iterates from the current position to the end of the file
- HTS_IDX_NONE always returns "no more alignment records"
When one of these special tid values is used, beg and end are ignored.
When REST or NONE is used, idx is also ignored and may be NULL.
*/
#define HTS_IDX_NOCOOR (-2)
#define HTS_IDX_START (-3)
#define HTS_IDX_REST (-4)
#define HTS_IDX_NONE (-5)
#define HTS_FMT_CSI 0
#define HTS_FMT_BAI 1
#define HTS_FMT_TBI 2
#define HTS_FMT_CRAI 3
struct __hts_idx_t;
typedef struct __hts_idx_t hts_idx_t;
typedef struct {
uint64_t u, v;
} hts_pair64_t;
typedef int hts_readrec_func(BGZF *fp, void *data, void *r, int *tid, int *beg, int *end);
typedef struct {
uint32_t read_rest:1, finished:1, dummy:29;
int tid, beg, end, n_off, i;
uint64_t curr_off;
hts_pair64_t *off;
hts_readrec_func *readrec;
struct {
int n, m;
int *a;
} bins;
} hts_itr_t;
#ifdef __cplusplus
extern "C" {
#endif
#define hts_bin_first(l) (((1<<(((l)<<1) + (l))) - 1) / 7)
#define hts_bin_parent(l) (((l) - 1) >> 3)
hts_idx_t *hts_idx_init(int n, int fmt, uint64_t offset0, int min_shift, int n_lvls);
void hts_idx_destroy(hts_idx_t *idx);
int hts_idx_push(hts_idx_t *idx, int tid, int beg, int end, uint64_t offset, int is_mapped);
void hts_idx_finish(hts_idx_t *idx, uint64_t final_offset);
void hts_idx_save(const hts_idx_t *idx, const char *fn, int fmt);
hts_idx_t *hts_idx_load(const char *fn, int fmt);
uint8_t *hts_idx_get_meta(hts_idx_t *idx, int *l_meta);
void hts_idx_set_meta(hts_idx_t *idx, int l_meta, uint8_t *meta, int is_copy);
int hts_idx_get_stat(const hts_idx_t* idx, int tid, uint64_t* mapped, uint64_t* unmapped);
uint64_t hts_idx_get_n_no_coor(const hts_idx_t* idx);
const char *hts_parse_reg(const char *s, int *beg, int *end);
hts_itr_t *hts_itr_query(const hts_idx_t *idx, int tid, int beg, int end, hts_readrec_func *readrec);
void hts_itr_destroy(hts_itr_t *iter);
typedef int (*hts_name2id_f)(void*, const char*);
typedef const char *(*hts_id2name_f)(void*, int);
typedef hts_itr_t *hts_itr_query_func(const hts_idx_t *idx, int tid, int beg, int end, hts_readrec_func *readrec);
hts_itr_t *hts_itr_querys(const hts_idx_t *idx, const char *reg, hts_name2id_f getid, void *hdr, hts_itr_query_func *itr_query, hts_readrec_func *readrec);
int hts_itr_next(BGZF *fp, hts_itr_t *iter, void *r, void *data);
const char **hts_idx_seqnames(const hts_idx_t *idx, int *n, hts_id2name_f getid, void *hdr); // free only the array, not the values
/**
* hts_file_type() - Convenience function to determine file type
* @fname: the file name
*
* Returns one of the FT_* defines.
*
* This function was added in order to avoid the need for excessive command
* line switches.
*/
#define FT_UNKN 0
#define FT_GZ 1
#define FT_VCF 2
#define FT_VCF_GZ (FT_GZ|FT_VCF)
#define FT_BCF (1<<2)
#define FT_BCF_GZ (FT_GZ|FT_BCF)
#define FT_STDIN (1<<3)
int hts_file_type(const char *fname);
#ifdef __cplusplus
}
#endif
static inline int hts_reg2bin(int64_t beg, int64_t end, int min_shift, int n_lvls)
{
int l, s = min_shift, t = ((1<<((n_lvls<<1) + n_lvls)) - 1) / 7;
for (--end, l = n_lvls; l > 0; --l, s += 3, t -= 1<<((l<<1)+l))
if (beg>>s == end>>s) return t + (beg>>s);
return 0;
}
static inline int hts_bin_bot(int bin, int n_lvls)
{
int l, b;
for (l = 0, b = bin; b; ++l, b = hts_bin_parent(b)); // compute the level of bin
return (bin - hts_bin_first(l)) << (n_lvls - l) * 3;
}
/**************
* Endianness *
**************/
static inline int ed_is_big(void)
{
long one= 1;
return !(*((char *)(&one)));
}
static inline uint16_t ed_swap_2(uint16_t v)
{
return (uint16_t)(((v & 0x00FF00FFU) << 8) | ((v & 0xFF00FF00U) >> 8));
}
static inline void *ed_swap_2p(void *x)
{
*(uint16_t*)x = ed_swap_2(*(uint16_t*)x);
return x;
}
static inline uint32_t ed_swap_4(uint32_t v)
{
v = ((v & 0x0000FFFFU) << 16) | (v >> 16);
return ((v & 0x00FF00FFU) << 8) | ((v & 0xFF00FF00U) >> 8);
}
static inline void *ed_swap_4p(void *x)
{
*(uint32_t*)x = ed_swap_4(*(uint32_t*)x);
return x;
}
static inline uint64_t ed_swap_8(uint64_t v)
{
v = ((v & 0x00000000FFFFFFFFLLU) << 32) | (v >> 32);
v = ((v & 0x0000FFFF0000FFFFLLU) << 16) | ((v & 0xFFFF0000FFFF0000LLU) >> 16);
return ((v & 0x00FF00FF00FF00FFLLU) << 8) | ((v & 0xFF00FF00FF00FF00LLU) >> 8);
}
static inline void *ed_swap_8p(void *x)
{
*(uint64_t*)x = ed_swap_8(*(uint64_t*)x);
return x;
}
#endif
|