How to create Sequence with multi lines in command-line?

[kth8384]

Read from file ok.

But make the command in my application, then call _popen, the command string like this "diagon Sequence -style=Unicode -- "Renderer -> Browser: BeginNavigation()" -- "Browser -> Network: URLRequest()" -- "Browser <- Network: URLResponse()" -- "Browser <- Network: URLResponse()" -- "Renderer <- Browser: CommitNavigation()" -- "Renderer -> Browser: DidCommitNavigation()"", cannot work?

How to make the command string?

[ArthurSonzogni]

Hi!
The documentation says:

    * command_line: diagon Math -- 1+1/2
    * file        : diagon Math < filename
    * stdin       : diagon Math

So, you are missing the -- before your command line string.

You can try:

diagon Sequence -- "
  Browser -> Network: URLRequest() 
  Browser <- Network: URLResponse() 
  Browser <- Network: URLResponse() 
  Renderer <- Browser: CommitNavigation() 
  Renderer -> Browser: DidCommitNavigation()
"

or with a file inputed using <<EOF

diagon Sequence <<EOF
  Browser -> Network: URLRequest() 
  Browser <- Network: URLResponse() 
  Browser <- Network: URLResponse() 
  Renderer <- Browser: CommitNavigation() 
  Renderer -> Browser: DidCommitNavigation()
EOF

Output:

┌───────┐     ┌───────┐┌────────┐
│Browser│     │Network││Renderer│
└───┬───┘     └───┬───┘└───┬────┘
    │             │        │     
    │URLRequest() │        │     
    │────────────>│        │     
    │             │        │     
    │URLResponse()│        │     
    │<────────────│        │     
    │             │        │     
    │URLResponse()│        │     
    │<────────────│        │     
    │             │        │     
    │  CommitNavigation()  │     
    │─────────────────────>│     
    │             │        │     
    │DidCommitNavigation() │     
    │<─────────────────────│     
┌───┴───┐     ┌───┴───┐┌───┴────┐
│Browser│     │Network││Renderer│
└───────┘     └───────┘└────────┘

[kth8384]

the -- aren't missing.

Thank you very much！
Can you help me to check my source? I have try my best but cann't find the error of my program.

`#include

void cmdSystem(const std::string& cmd) {
system(cmd.c_str());
}

#if defined(WIN32) || defined(_WIN32)
std::string cmdPopen(const std::string& cmd) {
char buffer[1024] = { '\0' };
FILE* pf = NULL;
pf = _popen(cmd.c_str(), "r");
if (NULL == pf) {
std::cout << "open pipe failed" << std::endl;
return std::string("");
}
std::string ret;
while (fgets(buffer, sizeof(buffer), pf)) {
ret += buffer;
}
_pclose(pf);
return ret;
}
#else
void cmdPopen(const char *cmd, char *result) {
char buf_ps[1024];
char ps[1024] { 0 };
FILE *pf;
strcpy(ps, cmd);
if ((pf = popen(ps, "r")) != NULL) {
while (fgets(buf_ps, 1024, pf) != NULL) {
// every line of output
//std::cout << buf_ps << std::endl;
std::cout<< buf_ps<< std::endl;
strcat(result, buf_ps);
if (strlen(result) > 1024)
break;
}
pclose(pf);
pf = NULL;
} else {
std::cout << "popen " << ps << " error" << std::endl;
}
}
#endif

#if 1
int main() {
//std::string cmdLine(R"("echo Hello, World!")");

std::string cmdLine = "diagon Sequence -style=Ascii -- \"";
cmdLine.append("	Renderer -> Browser: BeginNavigation()\n");
cmdLine.append("	Browser -> Network: URLRequest()\n");
cmdLine.append("	Browser <- Network: URLResponse()\n");
cmdLine.append("	Browser <- Network: URLResponse()\n");
cmdLine.append("	Renderer <- Browser: CommitNavigation()\n");
cmdLine.append("	Renderer -> Browser: DidCommitNavigation()\n");
cmdLine.append("\"");

//cmdLine = { R"AAA(diagon Sequence < "seq.txt" )AAA" };

//cmdSystem("chcp 936");	// no return value
cmdSystem("chcp 65001");	// no return value
std::string result = cmdPopen(cmdLine);
std::cout << result << std::endl;

system("pause");

return 0;

}
#endif
`

the result is

`
Active code page: 65001
┌────────┐ ┌───────┐
│Renderer│ │Browser│
└───┬────┘ └───┬───┘
│ │
│BeginNavigation()│
│────────────────>│
┌───┴────┐ ┌───┴───┐
│Renderer│ │Browser│
└────────┘ └───────┘

Press any key to continue . . .

`