So I have ran into an issue where I want to replace a string with
regex.
but i cant figure out how to replace items followed by a number.
i use "$1001" to do paste first match but this thinks I'm trying
using match 1001
but if i try ${1}001 it gives me an error saying that it cant
match the other "}"
perhaps D uses a different syntax but i couldn't find any
documentation on the replace side.
The following code renames files.
arg 1 - path
arg 2 - regex match
arg 3 - regex replace
----------------------
import std.file;
import std.path;
import std.regex;
import std.range;
import std.stdio:writeln;
void main(string[] args){
bool preview;
Regex!char myreg;
string replacment;
if(!args[1].buildNormalizedPath.isValidPath){writeln("Path is
invalid! "); return;}
try{myreg = regex(args[2]);}
catch(RegexException e) {writeln("Invalid
Regex command");return;}
try{replacment = args[3];}
catch(Exception e) {writeln("Needs
replacment string");return;}
if(args.length < 5){
preview = true;
writeln("result is preview only add extra arg for action");
}else{preview = false;}
size_t longest=0;
foreach (string name;
dirEntries(buildNormalizedPath(args[1].driveName(),args[1].stripDrive()) , SpanMode.shallow))
{
if(name.isFile){
longest = (longest>name.baseName.length) ? longest :
name.length;
}
}
foreach (string name;
dirEntries(buildNormalizedPath(args[1].driveName(),args[1].stripDrive()) , SpanMode.shallow))
{
if(name.isFile){
if(preview){
writeln("From:",name.baseName,"
".repeat(longest-name.baseName.length).join,"to:",replaceAll(name.baseName, myreg,replacment ));
}else{
std.file.rename(name,replaceAll(name,
myreg,replacment ));
}
}
}
}
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