/usr/share/octave/packages/3.2/io-1.0.14/append_save.m is in octave-io 1.0.14-2.
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 | ## Copyright (C) 2003 Tomer Altman <taltman@lbl.gov>
##
## 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.
##
## You should have received a copy of the GNU General Public License
## along with this program; If not, see <http://www.gnu.org/licenses/>.
##
## append_save M-file function
##
## Objective: be able to add variables to existing save files. Works for
## all the types of save files that "save" supports.
##
## Input:
## 1) A string which specifies the existing save file.
## 2) The options you need to pass to the 'save' function to save to the
## file type that you want.
## 3) A 1x2 cell, with the first element being a string representation
## of the variable/symbol that you're trying to add, followed by the
## actual variable/symbol itself.
## 4) Any number of additional 1x2 cells, following the same format as
## the 3rd argument specified immediately before this one.
##
## Output:
## Currently, none. But there might be some debugging / error-code
## messages in the future.
##
## Example:
## octave> B = ones(2,2);
## octave> append_save( "test.txt", "-binary", {"B", B } )
function [ return_value ] = append_save ( filename,
option,
var_val_cell,
varargin )
## Input checking:
if ( nargin < 3 )
error("append_save: needs three arguments.");
elseif ( !ischar(filename) )
error("append_save: filename must be a string.");
elseif ( !ischar(option) )
error("append_save: option must be a string." );
elseif ( !iscell(var_val_cell) )
error("append_save: variable-value pairs must be cells.")
elseif ( nargin > 3 )
for i=1:(nargin-3)
current_cell = varargin(i);
if ( !iscell(current_cell) )
error("append_save: variable-value pairs must be cells.");
elseif ( ( columns( current_cell ) != 2 )
|| ( rows( current_cell ) != 1 ) )
error("append_save: variable-value pairs must be 1x2 cells.")
elseif ( !ischar(current_cell{1} ) )
error("append_save: variable in pair must be a string." )
endif
endfor
endif
## First step: load into the environment what is already stuffed in
## the target file. Then, add their name to the list for "save".
env1 = who;
eval([ "load -force ", \
option, " ", \
filename ] );
env2 = who;
num_orig_vars = rows(env1);
# Not really 'current' env...
num_current_vars = rows(env2);
num_new_vars = num_current_vars - num_orig_vars;
var_str = "";
## This double 'for loop' weeds out only the loaded vars for
## inclusion.
if ( num_new_vars )
for i=1:num_current_vars
current_var = env2{i,1};
old_bool = 0;
for j=1:num_orig_vars
if ( strcmp( env1{j,1}, env2{i,1} )
||
strcmp( env2{i,1}, "env1" ) )
old_bool = 1;
endif
endfor
if ( old_bool == 0 )
var_name = env2{i,1};
var_str = [ var_str, " ", var_name, " " ];
endif
endfor
endif
## Second step: load into the environment the variable pairs. Then,
## add the name to the string for "save".
var_name = var_val_cell{1};
var_val = var_val_cell{2};
temp = var_val;
eval([ var_name, "=temp;" ]);
var_str = [ var_str, " ", var_name, " " ];
## Third step: do the same as step two, but loop through the possible
## variable arguments.
for i=1:(nargin-3)
current_cell = varargin(i);
var_name = current_cell{1};
var_val = current_cell{2};
temp = var_val;
eval([ var_name, "=temp;" ]);
var_str = [ var_str, " ", var_name, " " ];
var_str
endfor
## Finally, save all of the variables into the target file:
eval( [ "save ", \
option, " ", \
filename, " ", var_str; ] );
endfunction
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