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add custom plugin commands; start developing 'artifical star' plugin to generate 'vagrant stars'

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This commit is contained in:
Edward Emelianov
2024-02-07 17:01:58 +03:00
parent 869421d52f
commit 0f4fcf5015
13 changed files with 780 additions and 277 deletions
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122
ccdcapture.c
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@@ -189,8 +189,6 @@ static const char *resmessages[RESULT_NUM] = {
[RESULT_FAIL] = "FAIL",
[RESULT_BADVAL] = "BADVAL",
[RESULT_BADKEY] = "BADKEY",
// [RESULT_SILENCE] = NULL, // nothing to send
// [RESULT_DISCONNECTED] = NULL, // not to send
};
const char *cc_hresult2str(cc_hresult r){
@@ -732,3 +730,123 @@ int cc_charbuf2kw(cc_charbuff *b, fitsfile *f){
}
return TRUE;
}
static size_t print_val(cc_partype_t t, void *val, char *buf, size_t bufl){
size_t l = 0;
switch(t){
case CC_PAR_INT:
l = snprintf(buf, bufl, "%d", *(int*)val);
break;
case CC_PAR_FLOAT:
l = snprintf(buf, bufl, "%g", *(float*)val);
break;
case CC_PAR_DOUBLE:
l = snprintf(buf, bufl, "%g", *(double*)val);
break;
default:
l = snprintf(buf, bufl, "hoojnya");
break;
}
return l;
}
/**
* @brief cc_plugin_customcmd - common handler for custom plugin commands
* @param str - string like "par" (getter/cmd) or "par=val" (setter)
* @param handlers - NULL-terminated array of handlers for custom commands
* @param ans - buffer for output string
* @return RESULT_OK if all OK or error code
*/
cc_hresult cc_plugin_customcmd(const char *str, cc_parhandler_t *handlers, cc_charbuff *ans){
if(!str || !handlers) return RESULT_FAIL;
char key[256];
snprintf(key, 255, "%s", str);
char *val = cc_get_keyval(key);
cc_parhandler_t *phptr = handlers;
cc_hresult result = RESULT_BADKEY;
char buf[512];
#define ADDL(...) do{if(ans){size_t l = snprintf(bptr, L, __VA_ARGS__); bptr += l; L -= l;}}while(0)
#define PRINTVAL(v) do{if(ans){size_t l = print_val(phptr->type, phptr->v, bptr, L); bptr += l; L -= l;}}while(0)
while(phptr->cmd){
if(0 == strcmp(key, phptr->cmd)){
char *bptr = buf; size_t L = 511;
result = RESULT_OK;
if(phptr->checker) result = phptr->checker(str, ans);
if(phptr->ptr){ // setter/getter
if(val){if(result == RESULT_OK){// setter: change value only if [handler] returns OK (`handler` could be value checker)
int ival; float fval; double dval;
#define UPDATE_VAL(type, val, pr) do{ \
if(phptr->max && val > *(type*)phptr->max){ADDL("max=" pr, *(type*)phptr->max); result = RESULT_BADVAL;} \
if(phptr->min && val < *(type*)phptr->min){ADDL("min=" pr, *(type*)phptr->min); result = RESULT_BADVAL;} \
if(result == RESULT_OK) *(type*)phptr->ptr = val; \
}while(0)
switch(phptr->type){
case CC_PAR_INT:
ival = atoi(val);
UPDATE_VAL(int, ival, "%d");
break;
case CC_PAR_FLOAT:
fval = (float)atof(val);
UPDATE_VAL(float, fval, "%g");
break;
case CC_PAR_DOUBLE:
dval = atof(val);
UPDATE_VAL(double, dval, "%g");
break;
default:
result = RESULT_FAIL;
}
#undef UPDATE_VAL
}}else result = RESULT_SILENCE; // getter - don't show "OK"
DBG("res=%d", result);
if(result == RESULT_SILENCE || result == RESULT_OK){
ADDL("%s=", phptr->cmd);
PRINTVAL(ptr);
}
if(ans) cc_charbufaddline(ans, buf);
}
break;
}
++phptr;
}
if(ans && result == RESULT_BADKEY){ // cmd not found - display full help
cc_charbufaddline(ans, "Custom plugin commands:\n");
phptr = handlers;
while(phptr->cmd){
char *bptr = buf; size_t L = 511;
ADDL("\t%s", phptr->cmd);
if(phptr->ptr){
ADDL(" = (");
switch(phptr->type){
case CC_PAR_INT:
ADDL("int");
break;
case CC_PAR_FLOAT:
ADDL("float");
break;
case CC_PAR_DOUBLE:
ADDL("double");
break;
default:
ADDL("undefined");
}
ADDL(")");
if(phptr->min || phptr->max){
ADDL(" [");
if(phptr->min) PRINTVAL(min);
else ADDL("-inf");
ADDL(", ");
if(phptr->max) PRINTVAL(max);
else ADDL("inf");
ADDL("]");
}
}
ADDL(" - ");
ADDL("%s\n", phptr->helpstring);
cc_charbufaddline(ans, buf);
++phptr;
}
}
#undef ADDL
return result;
}