How to convert C style printf to C++ style cout in eclipse replace

Question

I want to convert C style LOGD("hello"); to LOGD<<"hello";

in eclipse find/replace.

how can I do that?

Answer 1

You may try the following find and replace, in regex mode:

Find:

LOGD\("([^"]*)"\);

Replace:

LOGD << "$1";

We capture the text of the string input into LOGD in your code, and then use it as the RHS of the << operator in the replacement. The (first) capture group is made available as $1.

Answer 2

While a regexp may be Ok, I recommend to use a macro or better a template inline function rather than a regexp conversion:

#define LOGD(x) LOGD_CPP<<(x)

or

template<typename X> inline void LOGD(const X &x) {LOGD_CPP<<x;}

The reason is to be compliant with possible syntax complications inside x (nested parentheses, lambda-functions etc.)

Answer 3

you can use in eclipse a regex based find/replace,

if you search by

LOG(.*?)\((.*?)\)

and replace to

LOG\1 << \2

this will find all levels in the log like debug, info warning error etc

LOGD("DEBUG:hello");
LOGW("WARNING:World"); 
LOGE("ERROR:Fooo"); 
LOGI("INFO:Fooo); 

and will replace it to

LOGD << "DEBUG:hello";
LOGW << "WARNING:World"; 
LOGE << "ERROR:Fooo"; 
LOGI << "INFO:Fooo; 

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