1 /* manexamp.c -- The examples which appear in the documentation are here. */
4 #include <readline/readline.h>
6 /* **************************************************************** */
8 /* How to Emulate gets () */
10 /* **************************************************************** */
12 /* A static variable for holding the line. */
13 static char *line_read = (char *)NULL;
15 /* Read a string, and return a pointer to it. Returns NULL on EOF. */
19 /* If the buffer has already been allocated, return the memory
24 line_read = (char *)NULL;
27 /* Get a line from the user. */
28 line_read = readline ("");
30 /* If the line has any text in it, save it on the history. */
31 if (line_read && *line_read)
32 add_history (line_read);
37 /* **************************************************************** */
39 /* Writing a Function to be Called by Readline. */
41 /* **************************************************************** */
43 /* Invert the case of the COUNT following characters. */
44 invert_case_line (count, key)
47 register int start, end;
59 /* Find the end of the range to modify. */
60 end = start + (count * direction);
62 /* Force it to be within range. */
78 /* Tell readline that we are modifying the line, so save the undo
80 rl_modifying (start, end);
82 for (; start != end; start += direction)
84 if (_rl_uppercase_p (rl_line_buffer[start]))
85 rl_line_buffer[start] = _rl_to_lower (rl_line_buffer[start]);
86 else if (_rl_lowercase_p (rl_line_buffer[start]))
87 rl_line_buffer[start] = _rl_to_upper (rl_line_buffer[start]);
90 /* Move point to on top of the last character changed. */
91 rl_point = end - direction;