32 static void insert_delete ( struct edit_string *string, size_t delete_len,
35 static void insert_character ( struct edit_string *string,
37 static void delete_character ( struct edit_string *string ) __nonnull;
38 static void backspace ( struct edit_string *string ) __nonnull;
39 static void kill_eol ( struct edit_string *string ) __nonnull;
48 static void insert_delete ( struct edit_string *string, size_t delete_len,  in insert_delete()  argument
53 	old_len = strlen ( string->buf );  in insert_delete()
54 	assert ( string->cursor <= old_len );  in insert_delete()
55 	max_delete_len = ( old_len - string->cursor );  in insert_delete()
59 	max_insert_len = ( ( string->len - 1 ) - ( old_len - delete_len ) );  in insert_delete()
65 	string->mod_start = string->cursor;  in insert_delete()
66 	string->mod_end = ( ( new_len > old_len ) ? new_len : old_len );  in insert_delete()
69 	memmove ( ( string->buf + string->cursor + insert_len ),  in insert_delete()
70 		  ( string->buf + string->cursor + delete_len ),  in insert_delete()
74 	memcpy ( ( string->buf + string->cursor ), insert_text, insert_len );  in insert_delete()
75 	string->cursor += insert_len;  in insert_delete()
84 static void insert_character ( struct edit_string *string,  in insert_character()  argument
87 	insert_delete ( string, 0, insert_text );  in insert_character()
95 static void delete_character ( struct edit_string *string ) {  in delete_character()  argument
96 	insert_delete ( string, 1, NULL );  in delete_character()
104 static void backspace ( struct edit_string *string ) {  in backspace()  argument
105 	if ( string->cursor > 0 ) {  in backspace()
106 		string->cursor--;  in backspace()
107 		delete_character ( string );  in backspace()
116 static void kill_eol ( struct edit_string *string ) {  in kill_eol()  argument
117 	insert_delete ( string, ~( ( size_t ) 0 ), NULL );  in kill_eol()
137 int edit_string ( struct edit_string *string, int key ) {  in edit_string()  argument
139 	size_t len = strlen ( string->buf );  in edit_string()
142 	string->last_cursor = string->cursor;  in edit_string()
143 	string->mod_start = string->cursor;  in edit_string()
144 	string->mod_end = string->cursor;  in edit_string()
149 		insert_character ( string, key );  in edit_string()
153 		backspace ( string );  in edit_string()
158 		delete_character ( string );  in edit_string()
162 		kill_eol ( string );  in edit_string()
167 		string->cursor = 0;  in edit_string()
172 		string->cursor = len;  in edit_string()
177 		if ( string->cursor > 0 )  in edit_string()
178 			string->cursor--;  in edit_string()
183 		if ( string->cursor < len )  in edit_string()
184 			string->cursor++;  in edit_string()