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Fix mime <-> UTI roundtripping

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Kovid Goyal
2026-02-21 16:37:04 +05:30
parent e93e50293a
commit aab60b7967
1 changed files with 43 additions and 17 deletions
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60
glfw/cocoa_window.m
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@@ -42,20 +42,46 @@
// Macro and forward declaration needed before draggingEntered: (uti_to_mime is defined in Clipboard section)
#define UTI_ROUNDTRIP_PREFIX @"uti-is-typical-apple-nih."
static NSString*
mime_to_uti(const char *mime) {
if (strcmp(mime, "text/plain") == 0) return NSPasteboardTypeString;
if (@available(macOS 11.0, *)) {
UTType *t = [UTType typeWithMIMEType:@(mime)]; // auto-released
if (t != nil && !t.dynamic) return t.identifier;
}
return [NSString stringWithFormat:@"%@%s", UTI_ROUNDTRIP_PREFIX, mime]; // auto-released
UTType *t = [UTType typeWithMIMEType:@(mime)]; // auto-released
if (t != nil && !t.dynamic) return t.identifier;
size_t sz = strlen(mime);
NSMutableString *hex = [NSMutableString stringWithCapacity:sz * 2];
for (NSUInteger i = 0; i < sz; i++) [hex appendFormat:@"%02x", (unsigned char)mime[i]];
return [NSString stringWithFormat:@"%@%@", UTI_ROUNDTRIP_PREFIX, hex]; // auto-released
}
static char
hexval(char c, bool *ok) {
if (c >= '0' && c <= '9') return c - '0';
if (c >= 'a' && c <= 'f') return c - 'a' + 10;
if (c >= 'A' && c <= 'F') return c - 'A' + 10;
*ok = false;
return 0;
}
static const char*
uti_to_mime(NSString *uti) {
if ([uti isEqualToString:NSPasteboardTypeString]) return "text/plain";
if ([uti hasPrefix:UTI_ROUNDTRIP_PREFIX]) return [[uti substringFromIndex:[UTI_ROUNDTRIP_PREFIX length]] UTF8String];
if ([uti hasPrefix:UTI_ROUNDTRIP_PREFIX]) {
NSString *hexPart = [uti substringFromIndex:UTI_ROUNDTRIP_PREFIX.length];
NSUInteger hexLen = hexPart.length;
if (hexLen == 0 || hexLen % 2 != 0) { return ""; }
const char *hex = [hexPart UTF8String];
static char buf[4096];
size_t i, j;
for (i = 0, j = 0; i < hexLen && j < sizeof(buf)-1; i += 2, j++) {
char hi = hex[i], lo = hex[i + 1];
bool ok = true;
buf[j] = (hexval(hi, &ok) << 4) | hexval(lo, &ok);
if (!ok) return "";
}
buf[j] = 0;
return buf;
}
if (@available(macOS 11.0, *)) {
UTType *t = [UTType typeWithIdentifier:uti]; // auto-released
if (t.preferredMIMEType != nil) return [t.preferredMIMEType UTF8String];
@@ -1448,18 +1474,18 @@ update_drop_state(_GLFWwindow *window, size_t mime_count) {
if ([pasteboard canReadObjectForClasses:@[[NSString class]] options:nil]) {
mime_array[mime_count++] = _glfw_strdup("text/plain");
}
#define add_mime(uti) { \
const char* mime = uti_to_mime(uti); \
if (mime && mime[0]) { \
bool duplicate = false; \
for (size_t i = 0; i < mime_count; i++) { \
if (strcmp(mime_array[i], mime) == 0) { \
duplicate = true; \
break; \
} \
} \
if (!duplicate) mime_array[mime_count++] = _glfw_strdup(mime); \
#define add_mime(uti) { \
const char* mime = uti_to_mime(uti); \
if (mime && mime[0]) { \
bool duplicate = false; \
for (size_t i = 0; i < mime_count; i++) { \
if (strcmp(mime_array[i], mime) == 0) { \
duplicate = true; \
break; \
} \
} \
if (!duplicate) mime_array[mime_count++] = _glfw_strdup(mime); \
} \
}
// Get file promise based types
for (NSFilePromiseReceiver *receiver in receivers) {