### BOM Detection Support in libchardet

Source: https://github.com/joungkyun/libchardet/blob/master/README.md

Demonstrates how to check for Byte Order Mark (BOM) detection support in libchardet. This feature is available if the CHARDET_BOM_CHECK constant is defined.

```c
#ifdef CHARDET_BOM_CHECK
    if (detected_obj->bom == 1) {
        // Detected as BOM
    }
#endif
```

--------------------------------

### Basic Character Encoding Detection

Source: https://github.com/joungkyun/libchardet/blob/master/README.md

Initializes a detection object, detects the encoding of a given string, and prints the results. This is suitable for single-pass detection. Ensure memory allocation is handled correctly.

```c
#include <chardet.h>

       int main (void) {
            DetectObj *obj;
            char * str = "안녕하세요";

            if ( (obj = detect_obj_init ()) == NULL ) {
                 fprintf (stderr, "Memory Allocation failed\n");
                 return CHARDET_MEM_ALLOCATED_FAIL;
            }

       #ifndef CHARDET_BINARY_SAFE 
            // before 1.0.5. This API is deprecated on 1.0.5
            switch (detect (str, &obj))
       #else
            // from 1.0.5
            switch (detect_r (str, strlen (str), &obj))
       #endif
            {
                 case CHARDET_OUT_OF_MEMORY :
                      fprintf (stderr, "On handle processing, occured out of memory\n");
                      detect_obj_free (&obj);
                      return CHARDET_OUT_OF_MEMORY;
                 case CHARDET_NULL_OBJECT :
                      fprintf (stderr,
                                "2st argument of chardet() is must memory allocation "
                                "with detect_obj_init API\n");
                      return CHARDET_NULL_OBJECT;
            }

        #ifndef CHARDET_BOM_CHECK
            printf ("encoding: %s, confidence: %f\n", obj->encoding, obj->confidence);
        #else
            // from 1.0.6 support return whether exists BOM
            printf (
                "encoding: %s, confidence: %f, exist BOM: %d\n",
                 obj->encoding, obj->confidence, obj->bom
            );
        #endif
            detect_obj_free (&obj);

            return 0;
       }

```

--------------------------------

### Looping Character Encoding Detection

Source: https://github.com/joungkyun/libchardet/blob/master/README.md

Initializes a detection handle and processes data within a loop to detect character encoding. This is useful for streaming data or repeated detections. It includes reset and cleanup steps for the detection handle and object.

```c
#include <chardet.h>

       int main (void) {
            Detect    * d;
            DetectObj * obj;
            char * str = "안녕하세요";

            if ( (d = detect_init ()) == NULL ) {
                 fprintf (stderr, "chardet handle initialize failed\n");
                 return CHARDET_MEM_ALLOCATED_FAIL;
            }

            while ( 1 ) {
                detect_reset (&d);

                if ( (obj = detect_obj_init ()) == NULL ) {
                     fprintf (stderr, "Memory Allocation failed\n");
                     return CHARDET_MEM_ALLOCATED_FAIL;
                }

       #ifndef CHARDET_BINARY_SAFE 
                // before 1.0.5. This API is deprecated on 1.0.5
                switch (detect_handledata (&d, str,, &obj))
       #else
                // from 1.0.5
                switch (detect_handledata_r (&d, str, strlen (str), &obj))
       #endif
                {
                     case CHARDET_OUT_OF_MEMORY :
                          fprintf (stderr, "On handle processing, occured out of memory\n");
                          detect_obj_free (&obj);
                          return CHARDET_OUT_OF_MEMORY;
                     case CHARDET_NULL_OBJECT :
                          fprintf (stderr,
                                    "2st argument of chardet() is must memory allocation "
                                    "with detect_obj_init API\n");
                          return CHARDET_NULL_OBJECT;
                }

        #ifndef CHARDET_BOM_CHECK
                printf ("encoding: %s, confidence: %f\n", obj->encoding, obj->confidence);
        #else
                // from 1.0.6 support return whether exists BOM
                printf (
                    "encoding: %s, confidence: %f, exist BOM: %d\n",
                    obj->encoding, obj->confidence, obj->bom
                );
        #endif
                detect_obj_free (&obj);

                if ( 1 )
                    break;
            }
            detect_destroy (&d);

           return 0;
       }

```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.