Global: remove unexpected trailing line endings

Ref: https://github.com/fastfetch-cli/fastfetch/pull/671#issuecomment-1867777472

src/util/FFstrbuf.c

@@ -281,6 +281,24 @@ void ffStrbufTrimRight(FFstrbuf* strbuf, char c)
     strbuf->chars[strbuf->length] = '\0';
 }
 
+void ffStrbufTrimRightSpace(FFstrbuf* strbuf)
+{
+    if(strbuf->length == 0)
+        return;
+
+    while(ffStrbufEndsWithFn(strbuf, isspace))
+        --strbuf->length;
+
+    if(strbuf->allocated == 0)
+    {
+        //static string
+        ffStrbufInitNS(strbuf, strbuf->length, strbuf->chars);
+        return;
+    }
+
+    strbuf->chars[strbuf->length] = '\0';
+}
+
 void ffStrbufRemoveSubstr(FFstrbuf* strbuf, uint32_t startIndex, uint32_t endIndex)
 {
     if(startIndex > strbuf->length || startIndex >= endIndex)

src/util/FFstrbuf.h

@@ -55,6 +55,7 @@ FF_C_PRINTF(2, 3) void ffStrbufSetF(FFstrbuf* strbuf, const char* format, ...);
 
 void ffStrbufTrimLeft(FFstrbuf* strbuf, char c);
 void ffStrbufTrimRight(FFstrbuf* strbuf, char c);
+void ffStrbufTrimRightSpace(FFstrbuf* strbuf);
 
 void ffStrbufRemoveSubstr(FFstrbuf* strbuf, uint32_t startIndex, uint32_t endIndex);
 void ffStrbufRemoveS(FFstrbuf* strbuf, const char* str);
@@ -454,6 +455,12 @@ static inline FF_C_NODISCARD bool ffStrbufEndsWithS(const FFstrbuf* strbuf, cons
     return ffStrbufEndsWithNS(strbuf, (uint32_t) strlen(end), end);
 }
 
+static inline FF_C_NODISCARD bool ffStrbufEndsWithFn(const FFstrbuf* strbuf, int (*fn)(int))
+{
+    return strbuf->length == 0 ? false :
+        fn(strbuf->chars[strbuf->length - 1]);
+}
+
 static inline FF_C_NODISCARD bool ffStrbufEndsWith(const FFstrbuf* strbuf, const FFstrbuf* end)
 {
     return ffStrbufEndsWithNS(strbuf, end->length, end->chars);

src/util/smbiosHelper.c

@@ -1,4 +1,5 @@
 #include "smbiosHelper.h"
+#include "common/io/io.h"
 
 bool ffIsSmbiosValueSet(FFstrbuf* value)
 {
@@ -26,3 +27,24 @@ bool ffIsSmbiosValueSet(FFstrbuf* value)
         !ffStrbufIgnCaseEqualS(value, "N/A")
     ;
 }
+
+#ifdef __linux__
+void ffGetSmbiosValue(const char* devicesPath, const char* classPath, FFstrbuf* buffer)
+{
+    if (ffReadFileBuffer(devicesPath, buffer))
+    {
+        ffStrbufTrimRightSpace(buffer);
+        if(ffIsSmbiosValueSet(buffer))
+            return;
+    }
+
+    if (ffReadFileBuffer(classPath, buffer))
+    {
+        ffStrbufTrimRightSpace(buffer);
+        if(ffIsSmbiosValueSet(buffer))
+            return;
+    }
+
+    ffStrbufClear(buffer);
+}
+#endif

src/util/smbiosHelper.h

@@ -12,4 +12,8 @@ static inline void ffCleanUpSmbiosValue(FFstrbuf* value)
         ffStrbufClear(value);
 }
 
-#endif
+#ifdef __linux__
+void ffGetSmbiosValue(const char* devicesPath, const char* classPath, FFstrbuf* buffer);
+#endif
+
+#endif