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Added getOutputOf functions to easily retrieve output of executed applications.

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This commit is contained in:
Thulinma 2013-08-07 16:04:34 +02:00
parent ba03efc07d
commit 0daa757e92
2 changed files with 36 additions and 0 deletions
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34
lib/procs.cpp
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@ -132,6 +132,40 @@ void Util::Procs::childsig_handler(int signum){
}
}
/// Runs the given command and returns the stdout output as a string.
std::string Util::Procs::getOutputOf(char * argv[]){
std::string ret;
int fin = 0, fout = -1, ferr = 0;
StartPiped("output_getter", argv, &fin, &fout, &ferr);
while (isActive("output_getter")){Util::sleep(100);}
FILE * outFile = fdopen(fout, "r");
char * fileBuf = 0;
size_t fileBufLen = 0;
while ( !(feof(outFile) || ferror(outFile)) && (getline(&fileBuf, &fileBufLen, outFile) != -1)){
ret += fileBuf;
}
fclose(outFile);
return ret;
}
/// Runs the given command and returns the stdout output as a string.
std::string Util::Procs::getOutputOf(std::string cmd){
std::string ret;
int fin = 0, fout = -1, ferr = 0;
StartPiped("output_getter", cmd, &fin, &fout, &ferr);
while (isActive("output_getter")){Util::sleep(100);}
FILE * outFile = fdopen(fout, "r");
char * fileBuf = 0;
size_t fileBufLen = 0;
while ( !(feof(outFile) || ferror(outFile)) && (getline(&fileBuf, &fileBufLen, outFile) != -1)){
ret += fileBuf;
}
fclose(outFile);
return ret;
}
/// Attempts to run the command cmd.
/// Replaces the current process - use after forking first!
/// This function will never return - it will either run the given

2
lib/procs.h
View file

@ -23,6 +23,8 @@ namespace Util {
static void runCmd(std::string & cmd);
static void setHandler();
public:
static std::string getOutputOf(char * argv[]);
static std::string getOutputOf(std::string cmd);
static pid_t Start(std::string name, std::string cmd);
static pid_t Start(std::string name, std::string cmd, std::string cmd2);
static pid_t Start(std::string name, std::string cmd, std::string cmd2, std::string cmd3);