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fix help return and detail err

This commit is contained in:
ubuntu201711081 2020-12-05 18:48:49 +00:00
parent b8106683b9
commit 940bf1a32c
1 changed files with 6 additions and 2 deletions
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8
server.c
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@ -210,17 +210,21 @@ int parse_args(int argc,const char * argv[] , in_port_t * port){
if (strcmp(opt,"-h") == 0 || strcmp(opt,"--help") == 0) if (strcmp(opt,"-h") == 0 || strcmp(opt,"--help") == 0)
{ {
help(argv[0]); help(argv[0]);
return 2; return 0;
} }
else if(strcmp(opt,"-p") == 0 || strcmp(opt,"--port") == 0){ else if(strcmp(opt,"-p") == 0 || strcmp(opt,"--port") == 0){
if (pos < argc){ if (pos < argc){
const char * value = argv[pos++]; const char * value = argv[pos++];
*port = atoi(value); *port = atoi(value);
if (port == 0){ // either not number or zero if (port == 0){ // either not number or zero
fprintf(stderr,"argument is either not number or zero\n");
return 2; return 2;
} }
} }
else return 2; //failed to find argument. else{
fprintf(stderr,"need argument\n");
return 2; //failed to find argument.
}
} }
} }
return 0; return 0;