/usr/include/zchunk.h is in libczmq-dev 3.0.2-5.
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 | /* =========================================================================
zchunk - work with memory chunks
Copyright (c) the Contributors as noted in the AUTHORS file.
This file is part of CZMQ, the high-level C binding for 0MQ:
http://czmq.zeromq.org.
This Source Code Form is subject to the terms of the Mozilla Public
License, v. 2.0. If a copy of the MPL was not distributed with this
file, You can obtain one at http://mozilla.org/MPL/2.0/.
=========================================================================
*/
#ifndef __ZCHUNK_H_INCLUDED__
#define __ZCHUNK_H_INCLUDED__
#ifdef __cplusplus
extern "C" {
#endif
// @interface
// Create a new chunk of the specified size. If you specify the data, it
// is copied into the chunk. If you do not specify the data, the chunk is
// allocated and left empty, and you can then add data using zchunk_append.
CZMQ_EXPORT zchunk_t *
zchunk_new (const void *data, size_t size);
// Destroy a chunk
CZMQ_EXPORT void
zchunk_destroy (zchunk_t **self_p);
// Resizes chunk max_size as requested; chunk_cur size is set to zero
CZMQ_EXPORT void
zchunk_resize (zchunk_t *self, size_t size);
// Return chunk cur size
CZMQ_EXPORT size_t
zchunk_size (zchunk_t *self);
// Return chunk max size
CZMQ_EXPORT size_t
zchunk_max_size (zchunk_t *self);
// Return chunk data
CZMQ_EXPORT byte *
zchunk_data (zchunk_t *self);
// Set chunk data from user-supplied data; truncate if too large. Data may
// be null. Returns actual size of chunk
CZMQ_EXPORT size_t
zchunk_set (zchunk_t *self, const void *data, size_t size);
// Fill chunk data from user-supplied octet
CZMQ_EXPORT size_t
zchunk_fill (zchunk_t *self, byte filler, size_t size);
// Append user-supplied data to chunk, return resulting chunk size. If the
// data would exceeed the available space, it is truncated. If you want to
// grow the chunk to accomodate new data, use the zchunk_extend method.
CZMQ_EXPORT size_t
zchunk_append (zchunk_t *self, const void *data, size_t size);
// Append user-supplied data to chunk, return resulting chunk size. If the
// data would exceeed the available space, the chunk grows in size.
CZMQ_EXPORT size_t
zchunk_extend (zchunk_t *self, const void *data, size_t size);
// Copy as much data from 'source' into the chunk as possible; returns the
// new size of chunk. If all data from 'source' is used, returns exhausted
// on the source chunk. Source can be consumed as many times as needed until
// it is exhausted. If source was already exhausted, does not change chunk.
CZMQ_EXPORT size_t
zchunk_consume (zchunk_t *self, zchunk_t *source);
// Returns true if the chunk was exhausted by consume methods, or if the
// chunk has a size of zero.
CZMQ_EXPORT bool
zchunk_exhausted (zchunk_t *self);
// Read chunk from an open file descriptor
CZMQ_EXPORT zchunk_t *
zchunk_read (FILE *handle, size_t bytes);
// Write chunk to an open file descriptor
CZMQ_EXPORT int
zchunk_write (zchunk_t *self, FILE *handle);
// Try to slurp an entire file into a chunk. Will read up to maxsize of
// the file. If maxsize is 0, will attempt to read the entire file and
// fail with an assertion if that cannot fit into memory. Returns a new
// chunk containing the file data, or NULL if the file could not be read.
CZMQ_EXPORT zchunk_t *
zchunk_slurp (const char *filename, size_t maxsize);
// Create copy of chunk, as new chunk object. Returns a fresh zchunk_t
// object, or null if there was not enough heap memory. If chunk is null,
// returns null.
CZMQ_EXPORT zchunk_t *
zchunk_dup (zchunk_t *self);
// Return chunk data encoded as printable hex string. Caller must free
// string when finished with it.
CZMQ_EXPORT char *
zchunk_strhex (zchunk_t *self);
// Return chunk data copied into freshly allocated string
// Caller must free string when finished with it.
CZMQ_EXPORT char *
zchunk_strdup (zchunk_t *self);
// Return TRUE if chunk body is equal to string, excluding terminator
CZMQ_EXPORT bool
zchunk_streq (zchunk_t *self, const char *string);
// Transform zchunk into a zframe that can be sent in a message.
CZMQ_EXPORT zframe_t *
zchunk_pack (zchunk_t *self);
// Transform a zframe into a zchunk.
CZMQ_EXPORT zchunk_t *
zchunk_unpack (zframe_t *frame);
// Calculate SHA1 digest for chunk, using zdigest class.
CZMQ_EXPORT const char *
zchunk_digest (zchunk_t *self);
// Dump chunk to FILE stream, for debugging and tracing.
CZMQ_EXPORT void
zchunk_fprint (zchunk_t *self, FILE *file);
// Dump message to stderr, for debugging and tracing.
// See zchunk_fprint for details
CZMQ_EXPORT void
zchunk_print (zchunk_t *self);
// Probe the supplied object, and report if it looks like a zchunk_t.
CZMQ_EXPORT bool
zchunk_is (void *self);
// Self test of this class
CZMQ_EXPORT void
zchunk_test (bool verbose);
// @end
#ifdef __cplusplus
}
#endif
#endif
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