snark13
737c974400
- Split tests/ (libc feature tests) and examples/ (real apps); shared
app.mk in repo root, was examples/example.mk
- libc/io/* split into libc/{conio,env,errno,file,mouse,string,sys,
time,video}/ — clearer module boundaries
- New examples/mdview/: markdown viewer (Phases 1-5 + light nested
lists). Headers (H1-H4), HR, ulist/olist/quote with nesting via
leading spaces, fenced code blocks, inline emphasis (bold/italic/
underscore/code), wrap/unwrap mode with soft wrap (F2), horizontal
pan (← →) with '>' truncation indicator
- libc additions: scroll() in conio (ESTEX SCROLL), strlwr/strupr,
gets() test
- Makefile updates across tests/ for the new shared app.mk path
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
129 lines
3.9 KiB
C
129 lines
3.9 KiB
C
#include <stdio.h>
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#include <conio.h>
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#include <unistd.h> /* sleep */
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/*
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* Exercises every conio function:
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* clrscr — clear the screen
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* gotoxy — move cursor to (x, y), 0-based
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* putch — single character
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* cputs — string without auto-newline
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* kbhit — non-blocking key probe
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* getch — blocking, no echo
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* getche — blocking, with echo
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*
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* Sprinter native text mode is 80×32, so we anchor corners at
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* (0,0), (79,0), (0,31), (79,31).
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*/
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int main(void)
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{
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/* 1. clrscr + diagnostic probes + a centered banner.
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*
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* Row-0 probe: figure out why [NW]/[NE] don't paint.
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* '0','1','2','3' — single putch at row 0, cols 0/5/40/79
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* "R0" — cputs at row 0, col 10
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* 'a','b','c','R1'— same pattern on row 1 (control)
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*/
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clrscr();
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gotoxy(0, 0); putch('0');
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gotoxy(5, 0); putch('1');
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gotoxy(40, 0); putch('2');
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gotoxy(79, 0); putch('3');
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gotoxy(10, 0); cputs("R0");
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gotoxy(0, 1); putch('a');
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gotoxy(5, 1); putch('b');
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gotoxy(79, 1); putch('c');
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gotoxy(10, 1); cputs("R1");
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/* Bottom corners moved to row 30 to avoid the auto-wrap-scroll issue —
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* cputs("[SE]") at (76, 31) ends with cursor at col 80 on the last row,
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* which scrolls the screen up by one and eats everything we wrote at
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* row 0. By staying on row 30, no wraparound is triggered. */
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gotoxy(0, 30); cputs("[SW]");
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gotoxy(76, 30); cputs("[SE]");
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/* Row 31 single-char probes (col 0 + col 78, no col-80 reach). */
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gotoxy(0, 31); putch('L');
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gotoxy(78, 31); putch('R');
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gotoxy(30, 4);
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cputs("== conio test ==");
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/* wherex/wherey probe — place cursor at a known spot, read it back. */
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gotoxy(15, 5);
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int cx = wherex();
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int cy = wherey();
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gotoxy(0, 6);
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printf("wherex/wherey after gotoxy(15,5) -> x=%d y=%d", cx, cy);
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/* 2. putch — single chars in a diagonal. */
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for (int i = 0; i < 16; i++) {
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gotoxy(10 + i, 8 + i);
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putch('*');
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}
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/* 3. kbhit polling loop with a spinning indicator. */
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gotoxy(0, 14);
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cputs("kbhit polling - press any key to interrupt");
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static const char spin[] = "|/-\\";
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int frame = 0;
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while (!kbhit()) {
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gotoxy(50, 14);
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putch(spin[frame & 3]);
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frame++;
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/* small delay so the spin is visible (sleep is in 1-sec units;
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* we want ~10 fps — implemented with a busy "halts" later, but
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* here we just rely on kbhit being slow enough to be visible). */
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}
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int probed = kbhit(); /* re-read to clear / display */
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gotoxy(0, 16);
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printf("kbhit captured 0x%02X ('%c')", probed,
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(probed >= 0x20 && probed < 0x7F) ? probed : '?');
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/* 4. getch — drain the key + ask for one with no echo. */
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gotoxy(0, 18);
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cputs("getch (no echo) — press a key: ");
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int k1 = getch();
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gotoxy(0, 19);
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printf("you pressed 0x%02X ('%c')", k1,
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(k1 >= 0x20 && k1 < 0x7F) ? k1 : '?');
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/* 5. getche — same but the keypress should appear on screen. */
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gotoxy(0, 21);
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cputs("getche (with echo) — press a key: ");
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gotoxy(36, 21);
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int k2 = getche();
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gotoxy(0, 22);
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printf("you pressed 0x%02X (echoed above)", k2);
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/* 6. Finish at the bottom; do NOT scroll. */
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gotoxy(0, 28);
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cputs("All conio functions exercised. Press any key to exit.");
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set_videotextmode(TEXT_MODE_40x32);
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for (int i = 0; i < 16; i++) {
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wrchar(4 + i * 2, 3, i < 10 ? '0' + i : 'A' - 10 + i, 0x1F);
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wrchar(4 + i * 2 + 1, 3, ' ', 0x1F);
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}
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for (int j = 0; j < 16; j++) {
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wrchar(2, 4 + j, j < 10 ? '0' + j : 'A' - 10 + j, 0x1F);
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wrchar(2 + 1, 4 + j, ' ', 0x1F);
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for (int i = 0; i < 16; i++) {
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wrchar(4 + i * 2, 4 + j, j * 16 + i, 0x2F);
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wrchar(4 + i * 2 + 1, 4 + j, ' ', 0x2F);
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}
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}
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(void)getch();
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set_videotextmode(TEXT_MODE_80x32);
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return 0;
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}
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