788 file_header_init(struct file_header **fh, const char *fn, size_t file_pos)  in file_header_init()  argument
791 	if (fh && fn) {  in file_header_init()
794 		*fh = sort_malloc(sizeof(struct file_header));  in file_header_init()
795 		(*fh)->file_pos = file_pos;  in file_header_init()
796 		(*fh)->fr = file_reader_init(fn);  in file_header_init()
797 		if ((*fh)->fr == NULL) {  in file_header_init()
801 		line = file_reader_readline((*fh)->fr);  in file_header_init()
803 			file_reader_free((*fh)->fr);  in file_header_init()
804 			(*fh)->fr = NULL;  in file_header_init()
805 			(*fh)->si = NULL;  in file_header_init()
807 			(*fh)->si = sort_list_item_alloc();  in file_header_init()
808 			sort_list_item_set((*fh)->si, line);  in file_header_init()
817 file_header_close(struct file_header **fh)  in file_header_close()  argument
820 	if (fh && *fh) {  in file_header_close()
821 		file_reader_free((*fh)->fr);  in file_header_close()
822 		(*fh)->fr = NULL;  in file_header_close()
823 		if ((*fh)->si) {  in file_header_close()
824 			sort_list_item_clean((*fh)->si);  in file_header_close()
825 			sort_free((*fh)->si);  in file_header_close()
826 			(*fh)->si = NULL;  in file_header_close()
828 		sort_free(*fh);  in file_header_close()
829 		*fh = NULL;  in file_header_close()
837 file_header_swap(struct file_header **fh, size_t i1, size_t i2)  in file_header_swap()  argument
841 	tmp = fh[i1];  in file_header_swap()
842 	fh[i1] = fh[i2];  in file_header_swap()
843 	fh[i2] = tmp;  in file_header_swap()
853 file_header_heap_swim(struct file_header **fh, size_t indx)  in file_header_heap_swim()  argument
861 		if (file_header_cmp(fh[indx], fh[parent_index]) < 0) {  in file_header_heap_swim()
863 			file_header_swap(fh, indx, parent_index);  in file_header_heap_swim()
864 			file_header_heap_swim(fh, parent_index);  in file_header_heap_swim()
873 file_header_heap_sink(struct file_header **fh, size_t indx, size_t size)  in file_header_heap_sink()  argument
887 		    (file_header_cmp(fh[left_child_index],  in file_header_heap_sink()
888 		    fh[right_child_index]) > 0))  in file_header_heap_sink()
890 		if (file_header_cmp(fh[indx], fh[min_child_index]) > 0) {  in file_header_heap_sink()
891 			file_header_swap(fh, indx, min_child_index);  in file_header_heap_sink()
892 			file_header_heap_sink(fh, min_child_index, size);  in file_header_heap_sink()
903 file_header_list_rearrange_from_header(struct file_header **fh, size_t size)  in file_header_list_rearrange_from_header()  argument
906 	file_header_heap_sink(fh, 0, size);  in file_header_list_rearrange_from_header()
913 file_header_list_push(struct file_header *f, struct file_header **fh, size_t size)  in file_header_list_push()  argument
916 	fh[size++] = f;  in file_header_list_push()
917 	file_header_heap_swim(fh, size - 1);  in file_header_list_push()
929 file_header_print(struct file_header *fh, FILE *f_out, struct last_printed *lp)  in file_header_print()  argument
932 	if (fh && fh->fr && f_out && fh->si && fh->si->str) {  in file_header_print()
934 			if ((lp->str == NULL) || (str_list_coll(lp->str, &(fh->si)))) {  in file_header_print()
935 				bwsfwrite(fh->si->str, f_out, sort_opts_vals.zflag);  in file_header_print()
938 				lp->str = bwsdup(fh->si->str);  in file_header_print()
941 			bwsfwrite(fh->si->str, f_out, sort_opts_vals.zflag);  in file_header_print()
949 file_header_read_next(struct file_header *fh)  in file_header_read_next()  argument
952 	if (fh && fh->fr) {  in file_header_read_next()
955 		tmp = file_reader_readline(fh->fr);  in file_header_read_next()
957 			file_reader_free(fh->fr);  in file_header_read_next()
958 			fh->fr = NULL;  in file_header_read_next()
959 			if (fh->si) {  in file_header_read_next()
960 				sort_list_item_clean(fh->si);  in file_header_read_next()
961 				sort_free(fh->si);  in file_header_read_next()
962 				fh->si = NULL;  in file_header_read_next()
965 			if (fh->si == NULL)  in file_header_read_next()
966 				fh->si = sort_list_item_alloc();  in file_header_read_next()
967 			sort_list_item_set(fh->si, tmp);  in file_header_read_next()
976 file_headers_merge(size_t fnum, struct file_header **fh, FILE *f_out)  in file_headers_merge()  argument
987 		file_header_list_push(fh[i], fh, i);  in file_headers_merge()
989 	while (fh[0]->fr) { /* unfinished files are always in front */  in file_headers_merge()
991 		file_header_print(fh[0], f_out, &lp);  in file_headers_merge()
993 		file_header_read_next(fh[0]);  in file_headers_merge()
995 		file_header_list_rearrange_from_header(fh, fnum);  in file_headers_merge()
1011 		struct file_header **fh;  in merge_files_array()  local
1020 		fh = sort_malloc((argc + 1) * sizeof(struct file_header *));  in merge_files_array()
1023 			file_header_init(fh + i, argv[i], (size_t) i);  in merge_files_array()
1025 		file_headers_merge(argc, fh, f_out);  in merge_files_array()
1028 			file_header_close(fh + i);  in merge_files_array()
1030 		sort_free(fh);  in merge_files_array()