#ifndef __SAM_HEADER_H__
 #define __SAM_HEADER_H__
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 	void *sam_header_parse2(const char *headerText);
 	void *sam_header_merge(int n, const void **dicts);
 	void sam_header_free(void *header);
 	char *sam_header_write(const void *headerDict);   // returns a newly allocated string
 
     /*
         // Usage example 
         const char *key, *val; 
         void *iter = sam_header_parse2(bam->header->text);
         while ( iter = sam_header_key_val(iter, "RG","ID","SM" &key,&val) ) printf("%s\t%s\n", key,val);
     */
     void *sam_header2key_val(void *iter, const char type[2], const char key_tag[2], const char value_tag[2], const char **key, const char **value);
 	char **sam_header2list(const void *_dict, char type[2], char key_tag[2], int *_n);
 
     /*
         // Usage example
         int i, j, n;
         const char *tags[] = {"SN","LN","UR","M5",NULL}; 
         void *dict = sam_header_parse2(bam->header->text);
         char **tbl = sam_header2tbl_n(h->dict, "SQ", tags, &n);
         for (i=0; i<n; i++)
         {
             for (j=0; j<4; j++) 
                 if ( tbl[4*i+j] ) printf("\t%s", tbl[4*i+j]); 
                 else printf("-");
             printf("\n");
         }
         if (tbl) free(tbl);
      */
     char **sam_header2tbl_n(const void *dict, const char type[2], const char *tags[], int *n);
 
 	void *sam_header2tbl(const void *dict, char type[2], char key_tag[2], char value_tag[2]);
 	const char *sam_tbl_get(void *h, const char *key);
 	int sam_tbl_size(void *h);
 	void sam_tbl_destroy(void *h);
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif