How to read from a *.txt file to assign variables and paths
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I would like to read from a text file that has the format of the following:
BASEPATH="'/Users/asdf/xyz'"
FILENAME1="'HELLO.txt'"
FILENAME2="'GOODBYE.txt'"
XVALUE="1"
YVALUE="2"
The purpose is to use this as an input file to import other files, HELLO.txt and GOODBYE.txt (in the same directory - /Users/asdf/xyz), and assign values for a few variables (XVALUE = 1 and YVALUE = 2).
Any help will be appreciated. Thanks!
采纳的回答
Matt Kindig
2013-7-24
编辑：Matt Kindig
2013-7-24
Easiest way is to parse with regular expressions and read into an output structure with named fields.
%read in file
str = fileread('/path/to/your/file.txt');
%extract fields and values
pieces = regexp(str, '(?<field>\w+)=(?<value>[^\n]+)', 'names');
out = struct(); %your variables
for k=1:length(pieces),
field = pieces(k).field;
val = pieces(k).value;
tf= ismember(val, char([34 39])); %remove " and ' from string
val = strtrim(val(~tf)); %also remove spaces
%try to convert to double. If successful, use converted value,
%otherwise use original (string) value
valn = str2double(val);
if ~isnan(valn), %conversion successful, use as numeric
val = valn;
end
%add to output structure
out.(field) = val;
end
4 个评论
Samuel
2013-7-24
Kundan
2013-7-24
I am also dealing with somewhat similar situation.
I have around 50,000 files in a directory. File name format is like 20130724ABCD.txt (where letters stand for yyyy, mm, dd and text is for location).
ABCD is unique( e.g. COLO, NEBR, KANS), and I want to concatenate contents of file in a file ABCD.
How would I do it? Any help is greatly appreciated.
Matt Kindig
2013-7-27
To clarify, you want to combine together the contents of all files which have the same 4-letter combo immediately prior to the file extension? If so, this is a bit different than the posted question, so you're better off starting a new question in this forum.
Matt Kindig
2013-7-27
In particular, there are several Linux tools that would probably be faster and better for this task. Also, this can probably be done quite efficiently in Perl.
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