/usr/lib/grass64/include/grass/iostream/mem_stream.h is in grass-dev 6.4.3-3.
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 | /****************************************************************************
*
* MODULE: iostream
*
* COPYRIGHT (C) 2007 Laura Toma
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*****************************************************************************/
#ifndef _MEM_STREAM_H
#define _MEM_STREAM_H
#include <stdlib.h>
#include <assert.h>
#include <cstring>
#include <iostream>
using namespace std;
template<class T>
class MEM_STREAM {
private:
T *data;
T *curr;
T *dataend;
int len;
public:
MEM_STREAM(T *data, int len);
~MEM_STREAM(void);
// Read and write elements.
AMI_err read_item(T **elt);
AMI_err write_item(const T &elt);
// Return the number of items in the stream.
off_t stream_len(void);
// Return the path name of this stream.
AMI_err name(char **stream_name);
// Move to a specific item in the stream.
AMI_err seek(off_t offset);
char *sprint();
};
/**********************************************************************/
template<class T>
MEM_STREAM<T>::MEM_STREAM(T *datap, int lenv) {
data = datap;
dataend = data + lenv;
curr = datap;
len = lenv;
};
/**********************************************************************/
// Return the number of items in the stream.
template<class T>
off_t MEM_STREAM<T>::stream_len(void) {
return len;
};
/**********************************************************************/
// Return the path name of this stream.
template<class T>
AMI_err MEM_STREAM<T>::name(char **stream_name) {
const char *path = "dummy";
*stream_name = new char [strlen(path) + 1];
strcpy(*stream_name, path);
return AMI_ERROR_NO_ERROR;
};
/**********************************************************************/
// Move to a specific offset within the (sub)stream.
template<class T>
AMI_err MEM_STREAM<T>::seek(off_t offset) {
assert(offset <= len);
curr = data + offset;
return AMI_ERROR_NO_ERROR;
}
/**********************************************************************/
template<class T>
MEM_STREAM<T>::~MEM_STREAM(void) {
};
/**********************************************************************/
template<class T>
AMI_err MEM_STREAM<T>::read_item(T **elt) {
assert(data);
if(curr == dataend) {
return AMI_ERROR_END_OF_STREAM;
}
*elt = curr;
curr++;
return AMI_ERROR_NO_ERROR;
};
/**********************************************************************/
template<class T>
AMI_err MEM_STREAM<T>::write_item(const T &elt) {
assert(data);
if(curr == dataend) {
return AMI_ERROR_END_OF_STREAM;
}
*curr = elt;
curr++;
return AMI_ERROR_NO_ERROR;
};
/**********************************************************************/
// sprint()
// Return a string describing the stream
//
// This function gives easy access to the file name, length.
// It is not reentrant, but this should not be too much of a problem
// if you are careful.
template<class T>
char *MEM_STREAM<T>::sprint() {
static char buf[BUFSIZ];
sprintf(buf, "[MEM_STREAM %d]", stream_len());
return buf;
};
#endif // _MEM_STREAM_H
|