Support for the '-a' command line option to auto-start the decryption effect
modified: README.md modified: src/main.c modified: src/nms.c modified: src/nms.h
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11
README.md
11
README.md
@ -62,6 +62,14 @@ Once the "encrypted" data is displayed, the program will pause until you press a
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decryption effect will start. After that is completed, it will again pause until
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you press a key, at which point the program will terminate.
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#### Command Line Options
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Use the `-a` option to set the auto_decrypt flag. This will automatically start the decryption effect,
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eliminating the need for the user to press a key to start it.
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```
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ls -l / | nms -a
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```
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Using the Module in Your Program
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---------------------------------
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@ -120,6 +128,7 @@ typedef struct {
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int input_cursor_x;
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int input_cursor_y;
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bool show_cursor;
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bool auto_decrypt;
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} NmsArgs;
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```
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* `char *src`
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@ -133,6 +142,8 @@ Useful for displaying menus:
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* If your menu has a specific location that you'd like to place the cursor for user input, use these to set the x and y screen coordinates for the position.
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* `bool show_cursor`
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* Set to `true` if you want the cursor to be visible during the text decryption effect. It is set to `false` by default.
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* `bool auto_decrypt`
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* Set to `true` to automatically start the decryption effect, eliminating the need for the user to press a key to start it.
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Assign values to the structure members as needed. Then simply pass a pointer to the structure to the
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nms_exec() function:
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21
src/main.c
21
src/main.c
@ -1,13 +1,30 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <ctype.h>
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#include "nms.h"
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int main(void) {
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int main(int argc, char *argv[]) {
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int c, o, inSize = 0;
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char *input = NULL;
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NmsArgs args = INIT_NMSARGS;
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// Processing command arguments
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while ((o = getopt(argc, argv, "a")) != -1) {
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switch (o) {
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case 'a':
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args.auto_decrypt = true;
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break;
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case '?':
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if (isprint(optopt))
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fprintf (stderr, "Unknown option '-%c'.\n", optopt);
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else
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fprintf (stderr, "Unknown option character '\\x%x'.\n", optopt);
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return 1;
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}
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}
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// Geting input
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int c, inSize = 0;
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while ((c = getchar()) != EOF) {
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++inSize;
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input = realloc(input, inSize + 1);
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11
src/nms.c
11
src/nms.c
@ -153,13 +153,10 @@ char nms_exec(NmsArgs *args) {
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// Flush any input up to this point
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flushinp();
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// Reopen stdin for interactive input (keyboard), then require user
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// to press a key to continue.
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if (!isatty(STDIN_FILENO))
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if (!freopen ("/dev/tty", "r", stdin))
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sleep(1);
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else
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getch();
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// If auto_decrypt flag is set, we sleep. Otherwise, reopen stdin for interactive
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// input (keyboard), then require user to press a key to continue.
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if (args->auto_decrypt == true || (!isatty(STDIN_FILENO) && !freopen ("/dev/tty", "r", stdin)))
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sleep(1);
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else
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getch();
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@ -5,7 +5,7 @@
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#include <stdbool.h>
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// Default arguments for nms_exec()
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#define INIT_NMSARGS { NULL, NULL, -1, -1, false }
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#define INIT_NMSARGS { NULL, NULL, -1, -1, false, false }
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// Argument structure for nms_exec()
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typedef struct {
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@ -14,6 +14,7 @@ typedef struct {
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int input_cursor_x;
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int input_cursor_y;
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bool show_cursor;
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bool auto_decrypt;
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} NmsArgs;
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// Display the characters stored in the display queue
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