opening many files and changing code to match file name
1 次查看(过去 30 天)
显示 更早的评论
Hello,
I was hoping that somebody might be able to help me with a problem that I have. I have 1000 files in the current directory called
RW1.a_process
RW2.a_process
RW3.a_process...
RW1000.a_process
I was wondering for each file how can I open it and change 2 lines in the code to be the same as the file name.
This file is called RW1.a_process
You will see RW1 in the two places marked red.
Is there anyway that I could do this for the remainder of the files? It would take me hours to do it manually.
Sincere thanks
John
4 个评论
Rick Rosson
2012-3-18
Are the two lines of text always lines 2 and 15, or do they change location from one file to the next?
采纳的回答
Jiro Doke
2012-3-18
This is probably a little too specific to your case, i.e. it's looking for a particular text. I'm just using strrep but if it doesn't work, you may have to look at regexprep.
In general, I agree with Rick that you should do this from the beginning (using your original file), instead of creating 1000 copies, changing the file names, and then changing those 2 lines.
d = dir('*.a_process');
for id = 1:length(d)
[p, name] = fileparts(d(id).name);
fid = fopen(d(id).name, 'r');
str = textscan(fid, '%s', 'delimiter', '\n', 'whitespace', '');
fclose(fid);
% Replace Strings
newStr = strrep(str{1}, 'Run RW Cycle', ['Run ', name, ' Cycle']);
newStr = strrep(newStr, 'RW.mat', [name, '.mat']);
% Overwrite
fid = fopen(d(id).name, 'w');
fprintf(fid, '%s\n', newStr{:});
fclose(fid);
end
更多回答(1 个)
Rick Rosson
2012-3-18
It may be easier to delete all of the files except for the original source file, and then use MATLAB to create all of the copies for you, but with the two specific lines customized on each copy.
Maybe, for example:
for k = 2:1000
fileName = ['RW' num2str(k)];
source = fopen( 'RW1.a_process','r');
target = fopen([fileName '.a_process'],'w');
Ln = 0;
while ~feof(source)
Ln = Ln + 1;
aLine = fgetl(source);
if Ln == 2
aLine = sprintf(...);
else
if Ln == 15
aLine = sprintf(...);
end
end
fprintf(target,'%s\n',aLine);
end
fclose(target);
fclose(source);
end
I realize that this code is not optimized, but it may help as a starting point.
HTH.
Rick
0 个评论
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Startup and Shutdown 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!