/*JSON{
"type" : "method",
"class" : "String",
"name" : "match",
"generate" : "jswrap_string_match",
"params" : [
["subStr","JsVar","Substring or RegExp to match"]
],
"return" : ["JsVar","This match array"]
}
Matches `subStr` occurrence in the string.
*/
JsVar *jswrap_string_match(JsVar *parent, JsVar *subStr) {
if (!jsvIsString(parent)) return 0;
if (jsvIsUndefined(subStr)) return 0;
#ifndef SAVE_ON_FLASH
// Use RegExp if one is passed in
if (jsvIsInstanceOf(subStr, "RegExp")) {
jsvObjectSetChildAndUnLock(subStr, "lastIndex", jsvNewFromInteger(0));
JsVar *match;
match = jswrap_regexp_exec(subStr, parent);
if (!jswrap_regexp_hasFlag(subStr,'g')) {
return match;
}
// global
JsVar *array = jsvNewEmptyArray();
if (!array) return 0; // out of memory
while (match && !jsvIsNull(match)) {
// get info about match
JsVar *matchStr = jsvGetArrayItem(match,0);
JsVarInt idx = jsvGetIntegerAndUnLock(jsvObjectGetChild(match,"index",0));
JsVarInt len = (JsVarInt)jsvGetStringLength(matchStr);
int last = idx+len;
jsvArrayPushAndUnLock(array, matchStr);
// search again
jsvUnLock(match);
jsvObjectSetChildAndUnLock(subStr, "lastIndex", jsvNewFromInteger(last));
match = jswrap_regexp_exec(subStr, parent);
}
jsvUnLock(match);
jsvObjectSetChildAndUnLock(subStr, "lastIndex", jsvNewFromInteger(0));
return array;
}
#endif
subStr = jsvAsString(subStr);
int idx = jswrap_string_indexOf(parent, subStr, 0, false);
if (idx>=0) {
JsVar *array = jsvNewEmptyArray();
if (!array) {
jsvUnLock(subStr);
return 0; // out of memory
}
jsvArrayPush(array, subStr);
jsvObjectSetChildAndUnLock(array, "index", jsvNewFromInteger(idx));
jsvObjectSetChildAndUnLock(array, "input", subStr);
return array;
}
jsvUnLock(subStr);
return NULL;
}
/*JSON{
"type" : "method",
"class" : "String",
"name" : "replace",
"generate" : "jswrap_string_replace",
"params" : [
["subStr","JsVar","The string to search for"],
["newSubStr","JsVar","The string to replace it with"]
],
"return" : ["JsVar","This string with `subStr` replaced"]
}
Search and replace ONE occurrance of `subStr` with `newSubStr` and return the result. This doesn't alter the original string. Regular expressions not supported.
*/
JsVar *jswrap_string_replace(JsVar *parent, JsVar *subStr, JsVar *newSubStr) {
JsVar *str = jsvAsString(parent, false);
subStr = jsvAsString(subStr, false);
newSubStr = jsvAsString(newSubStr, false);
int idx = jswrap_string_indexOf(parent, subStr, 0, false);
if (idx>=0) {
JsVar *newStr = jsvNewFromStringVar(str, 0, (size_t)idx);
jsvAppendStringVar(newStr, newSubStr, 0, JSVAPPENDSTRINGVAR_MAXLENGTH);
jsvAppendStringVar(newStr, str, (size_t)idx+jsvGetStringLength(subStr), JSVAPPENDSTRINGVAR_MAXLENGTH);
jsvUnLock(str);
str = newStr;
}
jsvUnLock2(subStr, newSubStr);
return str;
}
/*JSON{
"type" : "method",
"class" : "String",
"name" : "replace",
"generate" : "jswrap_string_replace",
"params" : [
["subStr","JsVar","The string to search for"],
["newSubStr","JsVar","The string to replace it with"]
],
"return" : ["JsVar","This string with `subStr` replaced"]
}
Search and replace ONE occurrance of `subStr` with `newSubStr` and return the result. This doesn't alter the original string. Regular expressions not supported.
*/
JsVar *jswrap_string_replace(JsVar *parent, JsVar *subStr, JsVar *newSubStr) {
JsVar *str = jsvAsString(parent);
#ifndef SAVE_ON_FLASH
// Use RegExp if one is passed in
if (jsvIsInstanceOf(subStr, "RegExp")) {
JsVar *replace;
if (jsvIsFunction(newSubStr) || jsvIsString(newSubStr))
replace = jsvLockAgain(newSubStr);
else
replace = jsvAsString(newSubStr);
jsvObjectSetChildAndUnLock(subStr, "lastIndex", jsvNewFromInteger(0));
bool global = jswrap_regexp_hasFlag(subStr,'g');
JsVar *match;
match = jswrap_regexp_exec(subStr, str);
while (match && !jsvIsNull(match) && !jspIsInterrupted()) {
// get info about match
JsVar *matchStr = jsvGetArrayItem(match,0);
JsVarInt idx = jsvGetIntegerAndUnLock(jsvObjectGetChild(match,"index",0));
JsVarInt len = (JsVarInt)jsvGetStringLength(matchStr);
// do the replacement
JsVar *newStr = jsvNewFromStringVar(str, 0, (size_t)idx);
JsvStringIterator dst;
jsvStringIteratorNew(&dst, newStr, 0);
jsvStringIteratorGotoEnd(&dst);
if (jsvIsFunction(replace)) {
unsigned int argCount = 0;
JsVar *args[13];
args[argCount++] = jsvLockAgain(matchStr);
JsVar *v;
while ((v = jsvGetArrayItem(match, (JsVarInt)argCount)))
args[argCount++] = v;
args[argCount++] = jsvObjectGetChild(match,"index",0);
args[argCount++] = jsvObjectGetChild(match,"input",0);
JsVar *result = jsvAsStringAndUnLock(jspeFunctionCall(replace, 0, 0, false, (JsVarInt)argCount, args));
jsvUnLockMany(argCount, args);
jsvStringIteratorAppendString(&dst, result, 0);
jsvUnLock(result);
} else {
JsvStringIterator src;
jsvStringIteratorNew(&src, replace, 0);
while (jsvStringIteratorHasChar(&src)) {
char ch = jsvStringIteratorGetChar(&src);
if (ch=='$') {
jsvStringIteratorNext(&src);
ch = jsvStringIteratorGetChar(&src);
JsVar *group = 0;
if (ch>'0' && ch<='9')
group = jsvGetArrayItem(match, ch-'0');
if (group) {
jsvStringIteratorAppendString(&dst, group, 0);
jsvUnLock(group);
} else {
jsvStringIteratorAppend(&dst, '$');
jsvStringIteratorAppend(&dst, ch);
}
} else {
jsvStringIteratorAppend(&dst, ch);
}
jsvStringIteratorNext(&src);
}
jsvStringIteratorFree(&src);
}
JsVarInt lastIndex = 1+(JsVarInt)jsvStringIteratorGetIndex(&dst);
jsvStringIteratorAppendString(&dst, str, (size_t)(idx+len));
jsvStringIteratorFree(&dst);
jsvUnLock2(str,matchStr);
str = newStr;
// search again if global
jsvUnLock(match);
match = 0;
if (global) {
jsvObjectSetChildAndUnLock(subStr, "lastIndex", jsvNewFromInteger(lastIndex));
match = jswrap_regexp_exec(subStr, str);
}
}
jsvUnLock(match);
jsvUnLock(replace);
// reset lastIndex if global
if (global)
jsvObjectSetChildAndUnLock(subStr, "lastIndex", jsvNewFromInteger(0));
return str;
}
#endif
newSubStr = jsvAsString(newSubStr);
subStr = jsvAsString(subStr);
int idx = jswrap_string_indexOf(parent, subStr, 0, false);
if (idx>=0) {
JsVar *newStr = jsvNewFromStringVar(str, 0, (size_t)idx);
jsvAppendStringVar(newStr, newSubStr, 0, JSVAPPENDSTRINGVAR_MAXLENGTH);
jsvAppendStringVar(newStr, str, (size_t)idx+jsvGetStringLength(subStr), JSVAPPENDSTRINGVAR_MAXLENGTH);
jsvUnLock(str);
str = newStr;
}
jsvUnLock2(subStr, newSubStr);
return str;
}
