SphinxBase
5prealpha
|
file IO related operations.
More...
#include <stdio.h>
#include <sys/stat.h>
#include <sphinxbase/sphinxbase_export.h>
#include <sphinxbase/prim_type.h>
Go to the source code of this file.
Data Structures | |
struct | lineiter_t |
Line iterator for files. More... | |
Macros | |
#define | myfopen(file, mode) _myfopen((file),(mode),__FILE__,__LINE__) |
Typedefs | |
typedef struct lineiter_t | lineiter_t |
Line iterator for files. | |
typedef struct bit_encode_s | bit_encode_t |
Bitstream encoder - for writing compressed files. | |
Functions | |
SPHINXBASE_EXPORT FILE * | fopen_comp (const char *file, const char *mode, int32 *ispipe) |
Like fopen, but use popen and zcat if it is determined that "file" is compressed (i.e., has a .z, .Z, .gz, or .GZ extension). More... | |
SPHINXBASE_EXPORT void | fclose_comp (FILE *fp, int32 ispipe) |
Close a file opened using fopen_comp. More... | |
SPHINXBASE_EXPORT FILE * | fopen_compchk (const char *file, int32 *ispipe) |
Open a file for reading, but if file not present try to open compressed version (if file is uncompressed, and vice versa). More... | |
SPHINXBASE_EXPORT FILE * | _myfopen (const char *file, const char *mode, const char *pgm, int32 line) |
Wrapper around fopen to check for failure and E_FATAL if failed. | |
SPHINXBASE_EXPORT int32 | fread_retry (void *pointer, int32 size, int32 num_items, FILE *stream) |
NFS file reads seem to fail now and then. More... | |
SPHINXBASE_EXPORT char * | fread_line (FILE *stream, size_t *out_len) |
Read a line of arbitrary length from a file and return it as a newly allocated string. More... | |
SPHINXBASE_EXPORT lineiter_t * | lineiter_start (FILE *fh) |
Start reading lines from a file. | |
SPHINXBASE_EXPORT lineiter_t * | lineiter_start_clean (FILE *fh) |
Start reading lines from a file, skip comments and trim lines. | |
SPHINXBASE_EXPORT lineiter_t * | lineiter_next (lineiter_t *li) |
Move to the next line in the file. | |
SPHINXBASE_EXPORT void | lineiter_free (lineiter_t *li) |
Stop reading lines from a file. | |
SPHINXBASE_EXPORT int | lineiter_lineno (lineiter_t *li) |
Returns current line number. | |
bit_encode_t * | bit_encode_attach (FILE *outfh) |
Attach bitstream encoder to a file. | |
bit_encode_t * | bit_encode_retain (bit_encode_t *be) |
Retain pointer to a bit encoder. | |
int | bit_encode_free (bit_encode_t *be) |
Release pointer to a bit encoder. More... | |
int | bit_encode_write (bit_encode_t *be, unsigned char const *bits, int nbits) |
Write bits to encoder. | |
int | bit_encode_write_cw (bit_encode_t *be, uint32 codeword, int nbits) |
Write lowest-order bits of codeword to encoder. | |
int | bit_encode_flush (bit_encode_t *be) |
Flush any unwritten bits, zero-padding if necessary. | |
SPHINXBASE_EXPORT int32 | stat_retry (const char *file, struct stat *statbuf) |
There is no bitstream decoder, because a stream abstraction is too slow. More... | |
SPHINXBASE_EXPORT int32 | stat_mtime (const char *file) |
Return time of last modification for the given file, or -1 if stat fails. | |
SPHINXBASE_EXPORT int | build_directory (const char *path) |
Create a directory and all of its parent directories, as needed. More... | |
file IO related operations.
Custom fopen with error checking is implemented. fopen_comp can open a file with .z, .Z, .gz or .GZ extension
WARNING: Usage of stat_retry will results in 100s of waiting time if the file doesn't exist.
Definition in file pio.h.
int bit_encode_free | ( | bit_encode_t * | be | ) |
SPHINXBASE_EXPORT int build_directory | ( | const char * | path | ) |
Create a directory and all of its parent directories, as needed.
Definition at line 621 of file pio.c.
References ckd_free(), ckd_salloc, E_ERROR_SYSTEM, and path2dirname().
SPHINXBASE_EXPORT void fclose_comp | ( | FILE * | fp, |
int32 | ispipe | ||
) |
Close a file opened using fopen_comp.
fp | In: File pointer to be closed |
ispipe | In: ispipe argument that was returned by the corresponding fopen_comp() call |
SPHINXBASE_EXPORT FILE* fopen_comp | ( | const char * | file, |
const char * | mode, | ||
int32 * | ispipe | ||
) |
Like fopen, but use popen and zcat if it is determined that "file" is compressed (i.e., has a .z, .Z, .gz, or .GZ extension).
file | In: File to be opened |
mode | In: "r" or "w", as with normal fopen |
ispipe | Out: On return *ispipe is TRUE iff file was opened via a pipe |
Definition at line 107 of file pio.c.
References E_FATAL, and string_join().
Referenced by fopen_compchk().
SPHINXBASE_EXPORT FILE* fopen_compchk | ( | const char * | file, |
int32 * | ispipe | ||
) |
Open a file for reading, but if file not present try to open compressed version (if file is uncompressed, and vice versa).
file | In: File to be opened |
ispipe | Out: On return *ispipe is TRUE iff file was opened via a pipe |
Definition at line 201 of file pio.c.
References fopen_comp().
SPHINXBASE_EXPORT char* fread_line | ( | FILE * | stream, |
size_t * | out_len | ||
) |
Read a line of arbitrary length from a file and return it as a newly allocated string.
stream | The file handle to read from. |
out_len | Output: if not NULL, length of the string read. |
SPHINXBASE_EXPORT int32 fread_retry | ( | void * | pointer, |
int32 | size, | ||
int32 | num_items, | ||
FILE * | stream | ||
) |
NFS file reads seem to fail now and then.
Use the following functions in place of the regular fread. It retries failed freads several times and quits only if all of them fail. Be aware, however, that even normal failures such as attempting to read beyond EOF will trigger such retries, wasting about a minute in retries. Arguments identical to regular fread.
Definition at line 408 of file pio.c.
References E_ERROR_SYSTEM.
SPHINXBASE_EXPORT int32 stat_retry | ( | const char * | file, |
struct stat * | statbuf | ||
) |
There is no bitstream decoder, because a stream abstraction is too slow.
Instead we read blocks of bits and treat them as bitvectors. Like fread_retry, but for stat. Arguments identical to regular stat. Return value: 0 if successful, -1 if stat failed several attempts.
Definition at line 489 of file pio.c.
References E_ERROR_SYSTEM.
Referenced by stat_mtime().