Disk: add --disk-hide-fs

Fix #1762

src/util/FFstrbuf.c

@@ -607,3 +607,32 @@ bool ffStrbufRemoveDupWhitespaces(FFstrbuf* strbuf)
 
     return changed;
 }
+
+/// @brief Check if a separated string contains a substring.
+/// @param strbuf The substring to check.
+/// @param compLength The length of the separated string to check.
+/// @param comp The separated string to check.
+/// @param separator The separator character.
+bool ffStrbufMatchSeparatedNS(const FFstrbuf* strbuf, uint32_t compLength, const char* comp, char separator)
+{
+    if (strbuf->length == 0)
+        return true;
+
+    if (compLength == 0)
+        return false;
+
+    for (const char* p = comp; p < comp + compLength;)
+    {
+        const char* colon = memchr(p, separator, compLength);
+        if (colon == NULL)
+            return strcmp(strbuf->chars, p) == 0;
+
+        uint32_t substrLength = (uint32_t) (colon - p);
+        if (strbuf->length == substrLength && memcmp(strbuf->chars, p, substrLength) == 0)
+            return true;
+
+        p = colon + 1;
+    }
+
+    return false;
+}

src/util/FFstrbuf.h

@@ -92,6 +92,7 @@ void ffStrbufLowerCase(FFstrbuf* strbuf);
 bool ffStrbufGetline(char** lineptr, size_t* n, FFstrbuf* buffer);
 void ffStrbufGetlineRestore(char** lineptr, size_t* n, FFstrbuf* buffer);
 bool ffStrbufRemoveDupWhitespaces(FFstrbuf* strbuf);
+bool ffStrbufMatchSeparatedNS(const FFstrbuf* strbuf, uint32_t compLength, const char* comp, char separator);
 
 FF_C_NODISCARD static inline FFstrbuf ffStrbufCreateA(uint32_t allocate)
 {
@@ -506,4 +507,14 @@ static inline void ffStrbufTrim(FFstrbuf* strbuf, char c)
     ffStrbufTrimLeft(strbuf, c);
 }
 
+static inline bool ffStrbufMatchSeparatedS(const FFstrbuf* strbuf, const char* comp, char separator)
+{
+    return ffStrbufMatchSeparatedNS(strbuf, (uint32_t) strlen(comp), comp, separator);
+}
+
+static inline bool ffStrbufMatchSeparated(const FFstrbuf* strbuf, const FFstrbuf* comp, char separator)
+{
+    return ffStrbufMatchSeparatedNS(strbuf, comp->length, comp->chars, separator);
+}
+
 #define FF_STRBUF_AUTO_DESTROY FFstrbuf __attribute__((__cleanup__(ffStrbufDestroy)))