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Update isdigit, isalpha, and isalnum to handle Unicode characters #54

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Merged
sjanzou merged 2 commits into from
Mar 23, 2025
Merged

Update isdigit, isalpha, and isalnum to handle Unicode characters #54

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518d261
Update isdigit, isalpha, and isalnum to handle Unicode characters
sjanzou Mar 21, 2025
447dafa
Fix isdigit, isalpha, isalnum to handle null character
cpaulgilman Mar 21, 2025
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44 changes: 40 additions & 4 deletions src/stdlib.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1862,19 +1862,55 @@ static void _ascii(lk::invoke_t &cxt) {
static void _isalpha(lk::invoke_t &cxt) {
LK_DOC("isalpha", "Returns true if the argument is an alphabetic character A-Z,a-z.", "(character):boolean");
lk_string s = cxt.arg(0).as_string();
cxt.result().assign(::isalpha(s.length() > 0 ? (int) s[0] : 0) ? 1.0 : 0.0);
double x = 0;
if (!s.IsNull()) {
try {
lk_char y = s[0];
if (y < 256 && !s.IsNull())
x = ::isalpha(s.length() > 0 ? (int)y : 0) ? 1.0 : 0.0;
}
catch (const std::exception&) {
x = 0;
}
}
cxt.result().assign(x);
//cxt.result().assign(::isalpha(s.length() > 0 ? (int) s[0] : 0) ? 1.0 : 0.0);
}

static void _isdigit(lk::invoke_t &cxt) {
LK_DOC("isdigit", "Returns true if the argument is a numeric digit 0-9.", "(character):boolean");
lk_string s = cxt.arg(0).as_string();
cxt.result().assign(::isdigit(s.length() > 0 ? (int) s[0] : 0) ? 1.0 : 0.0);
double x = 0;
if (!s.IsNull()) {
try {
lk_char y = s[0];
if (y < 256)
x = ::isdigit(s.length() > 0 ? (int)y : 0) ? 1.0 : 0.0;
}
catch (const std::exception&) {
x = 0;
}
}
cxt.result().assign(x);
// cxt.result().assign(::isdigit(s.length() > 0 ? (int) s[0] : 0) ? 1.0 : 0.0);
}

static void _isalnum(lk::invoke_t &cxt) {
static void _isalnum(lk::invoke_t& cxt) {
LK_DOC("isalnum", "Returns true if the argument is an alphanumeric A-Z,a-z,0-9.", "(character):boolean");
lk_string s = cxt.arg(0).as_string();
cxt.result().assign(::isalnum(s.length() > 0 ? (int) s[0] : 0) ? 1.0 : 0.0);
double x = 0;
if (!s.IsNull()) {
try {
lk_char y = s[0];
if (y < 256)
x = ::isalnum(s.length() > 0 ? (int)y : 0) ? 1.0 : 0.0;
}
catch (const std::exception&) {
x = 0;
}
}
cxt.result().assign(x);
// cxt.result().assign(::isalnum(s.length() > 0 ? (int) s[0] : 0) ? 1.0 : 0.0);
}

static void _char(lk::invoke_t &cxt) {
Expand Down