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hacked together super short switch support (eg. crc32 -rxbp0xF4ACFB13)

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This commit is contained in:
Connor Olding 2012-04-14 18:06:37 -07:00
parent 1e844fd1d9
commit f86dbffc93
1 changed files with 43 additions and 4 deletions
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47
args.h
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@ -54,6 +54,13 @@ static char args_is_blank(char* s)
return 0; return 0;
} }
static char args_is_short(char *s)
{
if (!args_is_blank(s) && s[0] == '-' && s[1] != '\0' && s[1] != '-')
return 1;
return 0;
}
static void args_print_info() static void args_print_info()
{ {
printf(args_info); printf(args_info);
@ -104,8 +111,12 @@ static int args_get_index(char* name)
return -1; return -1;
} }
char* args_poll() static char* args__poll(char wants_switch)
{ {
static char short_[3] = "-\0";
static int pos = 0;
char* arg = NULL;
if (args_current >= args_argc) { if (args_current >= args_argc) {
if (args_current - 1 == args_previous) if (args_current - 1 == args_previous)
fprintf(stderr, "%s requires an argument.\n", fprintf(stderr, "%s requires an argument.\n",
@ -115,9 +126,36 @@ char* args_poll()
args_argv[args_previous]); args_argv[args_previous]);
args_print_usage(); args_print_usage();
exit(1); exit(1);
}
arg = args_argv[args_current];
if (!wants_switch) {
args_current++; args_current++;
return args_argv[args_current - 1]; return arg + pos * sizeof(char);
}
if (args_is_short(arg)) {
if (pos == 0)
pos++;
short_[1] = arg[pos];
pos++;
if (arg[pos] == '\0') {
pos = 0;
args_current++;
}
return short_;
} else {
args_current++;
}
return arg;
}
static char* args_poll_for_switch()
{
return args__poll(1);
}
char* args_poll()
{
return args__poll(0);
} }
void args_handle(int argc, char** argv) void args_handle(int argc, char** argv)
@ -133,7 +171,7 @@ void args_handle(int argc, char** argv)
int index; int index;
args_previous = args_current; args_previous = args_current;
name = args_poll(); name = args_poll_for_switch();
index = args_get_index(name); index = args_get_index(name);
if (index < 0) { if (index < 0) {
fprintf(stderr, "Unknown option: %s\n", name); fprintf(stderr, "Unknown option: %s\n", name);
@ -145,3 +183,4 @@ void args_handle(int argc, char** argv)
} }
#endif #endif