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Moved string replace function from stream library to util library

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Change-Id: Icea1eed11b241063af39d0c7cf23f1733f96012c
This commit is contained in:
Marco 2022-12-26 15:57:19 +01:00 • committed by Thulinma
parent 877216efd0
commit 62b14d958d
3 changed files with 30 additions and 29 deletions
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48
lib/stream.cpp
View file

@ -33,16 +33,6 @@ static std::string strftime_now(const std::string &format){
return buffer;
}
/// Replaces any occurrences of 'from' with 'to' in 'str'.
static void replace(std::string &str, const std::string &from, const std::string &to){
if (from.empty()){return;}
size_t start_pos = 0;
while ((start_pos = str.find(from, start_pos)) != std::string::npos){
str.replace(start_pos, from.length(), to);
start_pos += to.length();
}
}
std::string Util::codecString(const std::string &codec, const std::string &initData){
if (codec == "H264"){
std::stringstream r;
@ -119,32 +109,32 @@ std::string Util::codecString(const std::string &codec, const std::string &initD
/// Replaces all stream-related variables in the given 'str' with their values.
void Util::streamVariables(std::string &str, const std::string &streamname, const std::string &source){
replace(str, "$source", source);
replace(str, "$datetime", "$year.$month.$day.$hour.$minute.$second");
replace(str, "$day", strftime_now("%d"));
replace(str, "$month", strftime_now("%m"));
replace(str, "$year", strftime_now("%Y"));
replace(str, "$hour", strftime_now("%H"));
replace(str, "$minute", strftime_now("%M"));
replace(str, "$second", strftime_now("%S"));
replace(str, "$wday", strftime_now("%u")); // weekday, 1-7, monday=1
replace(str, "$yday", strftime_now("%j")); // yearday, 001-366
replace(str, "$week", strftime_now("%V")); // week number, 01-53
replace(str, "$stream", streamname);
Util::replace(str, "$source", source);
Util::replace(str, "$datetime", "$year.$month.$day.$hour.$minute.$second");
Util::replace(str, "$day", strftime_now("%d"));
Util::replace(str, "$month", strftime_now("%m"));
Util::replace(str, "$year", strftime_now("%Y"));
Util::replace(str, "$hour", strftime_now("%H"));
Util::replace(str, "$minute", strftime_now("%M"));
Util::replace(str, "$second", strftime_now("%S"));
Util::replace(str, "$wday", strftime_now("%u")); // weekday, 1-7, monday=1
Util::replace(str, "$yday", strftime_now("%j")); // yearday, 001-366
Util::replace(str, "$week", strftime_now("%V")); // week number, 01-53
Util::replace(str, "$stream", streamname);
if (streamname.find('+') != std::string::npos){
std::string strbase = streamname.substr(0, streamname.find('+'));
std::string strext = streamname.substr(streamname.find('+') + 1);
replace(str, "$basename", strbase);
replace(str, "$wildcard", strext);
Util::replace(str, "$basename", strbase);
Util::replace(str, "$wildcard", strext);
if (strext.size()){
replace(str, "$pluswildcard", "+" + strext);
Util::replace(str, "$pluswildcard", "+" + strext);
}else{
replace(str, "$pluswildcard", "");
Util::replace(str, "$pluswildcard", "");
}
}else{
replace(str, "$basename", streamname);
replace(str, "$wildcard", "");
replace(str, "$pluswildcard", "");
Util::replace(str, "$basename", streamname);
Util::replace(str, "$wildcard", "");
Util::replace(str, "$pluswildcard", "");
}
}

10
lib/util.cpp
View file

@ -150,6 +150,16 @@ namespace Util{
}
}
/// Replaces any occurrences of 'from' with 'to' in 'str'.
void replace(std::string &str, const std::string &from, const std::string &to){
if (from.empty()){return;}
size_t start_pos = 0;
while ((start_pos = str.find(from, start_pos)) != std::string::npos){
str.replace(start_pos, from.length(), to);
start_pos += to.length();
}
}
//Returns the time to wait in milliseconds for exponential back-off waiting.
//If currIter > maxIter, always returns 5ms to prevent tight eternal loops when mistakes are made
//Otherwise, exponentially increases wait time for a total of maxWait milliseconds after maxIter calls.

1
lib/util.h
View file

@ -13,6 +13,7 @@ namespace Util{
bool createPath(const std::string &path);
bool stringScan(const std::string &src, const std::string &pattern, std::deque<std::string> &result);
void stringToLower(std::string &val);
void replace(std::string &str, const std::string &from, const std::string &to);
int64_t expBackoffMs(const size_t currIter, const size_t maxIter, const int64_t maxWait);