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JS: Add parse_int(), to_upper_case(), to_lower_case() (#17)

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WillyJL
2024-03-17 06:54:15 +00:00
committed by GitHub
parent 6f9e50d7df 7f07417676
commit d63a07f603
2 changed files with 104 additions and 0 deletions
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applications/system/js_app/examples/apps/Scripts/stringutils.js
+19
View File
@@ -0,0 +1,19 @@
let sampleText = "Hello, World!";
let lengthOfText = "Length of text: " + to_string(sampleText.length);
print(lengthOfText);
let start = 7;
let end = 12;
let substringResult = sampleText.slice(start, end);
print(substringResult);
let searchStr = "World";
let result2 = to_string(sampleText.indexOf(searchStr));
print(result2);
let upperCaseText = "Text in upper case: " + to_upper_case(sampleText);
print(upperCaseText);
let lowerCaseText = "Text in lower case: " + to_lower_case(sampleText);
print(lowerCaseText);
applications/system/js_app/js_thread.c
+85
View File
@@ -210,6 +210,88 @@ static void js_global_to_hex_string(struct mjs* mjs) {
mjs_return(mjs, ret);
}
static void js_parse_int(struct mjs* mjs) {
mjs_val_t arg = mjs_arg(mjs, 0);
if(!mjs_is_string(arg)) {
mjs_return(mjs, mjs_mk_number(mjs, 0));
return;
}
size_t str_len = 0;
const char* str = mjs_get_string(mjs, &arg, &str_len);
if((str_len == 0) || (str == NULL)) {
mjs_return(mjs, mjs_mk_number(mjs, 0));
return;
}
int32_t num = 0;
int32_t sign = 1;
size_t i = 0;
if(str[0] == '-') {
sign = -1;
i = 1;
} else if(str[0] == '+') {
i = 1;
}
for(; i < str_len; i++) {
if(str[i] >= '0' && str[i] <= '9') {
num = num * 10 + (str[i] - '0');
} else {
break;
}
}
num *= sign;
mjs_return(mjs, mjs_mk_number(mjs, num));
}
static void js_to_upper_case(struct mjs* mjs) {
mjs_val_t arg0 = mjs_arg(mjs, 0);
size_t str_len;
const char* str = NULL;
if(mjs_is_string(arg0)) {
str = mjs_get_string(mjs, &arg0, &str_len);
}
if(!str) {
mjs_return(mjs, MJS_UNDEFINED);
return;
}
char* upperStr = strdup(str);
for(size_t i = 0; i < str_len; i++) {
upperStr[i] = toupper(upperStr[i]);
}
mjs_val_t resultStr = mjs_mk_string(mjs, upperStr, ~0, true);
free(upperStr);
mjs_return(mjs, resultStr);
}
static void js_to_lower_case(struct mjs* mjs) {
mjs_val_t arg0 = mjs_arg(mjs, 0);
size_t str_len;
const char* str = NULL;
if(mjs_is_string(arg0)) {
str = mjs_get_string(mjs, &arg0, &str_len);
}
if(!str) {
mjs_return(mjs, MJS_UNDEFINED);
return;
}
char* lowerStr = strdup(str);
for(size_t i = 0; i < str_len; i++) {
lowerStr[i] = tolower(lowerStr[i]);
}
mjs_val_t resultStr = mjs_mk_string(mjs, lowerStr, ~0, true);
free(lowerStr);
mjs_return(mjs, resultStr);
}
#ifdef JS_DEBUG
static void js_dump_write_callback(void* ctx, const char* format, ...) {
File* file = ctx;
@@ -243,6 +325,9 @@ static int32_t js_thread(void* arg) {
mjs_set(mjs, global, "to_hex_string", ~0, MJS_MK_FN(js_global_to_hex_string));
mjs_set(mjs, global, "ffi_address", ~0, MJS_MK_FN(js_ffi_address));
mjs_set(mjs, global, "require", ~0, MJS_MK_FN(js_require));
mjs_set(mjs, global, "parse_int", ~0, MJS_MK_FN(js_parse_int));
mjs_set(mjs, global, "to_upper_case", ~0, MJS_MK_FN(js_to_upper_case));
mjs_set(mjs, global, "to_lower_case", ~0, MJS_MK_FN(js_to_lower_case));
mjs_val_t console_obj = mjs_mk_object(mjs);
mjs_set(mjs, console_obj, "log", ~0, MJS_MK_FN(js_console_log));