From: Tomas Mudrunka <tomas.mudrunka@gmail.com>
Date: Wed, 24 Sep 2025 11:32:40 +0000 (+0200)
Subject: readline challenge
X-Git-Url: https://git.harvie.cz/?a=commitdiff_plain;h=cb5f9e37599042769c2d4a691f12d3832fb51c64;p=mirrors%2FPrograms.git

readline challenge
---

diff --git a/c/readline_recursive.c b/c/readline_recursive.c
new file mode 100644
index 0000000..6bde074
--- /dev/null
+++ b/c/readline_recursive.c
@@ -0,0 +1,31 @@
+#include <stdio.h> //Pouze printf() pro debug
+#include <stdlib.h>
+#include <unistd.h>
+
+void readline_rec(int offset, int size, char **buffer) {
+	char *fragment = malloc(size); //Mohlo by byt i staticky, ale size by musela byt konstantni
+	int finished = 0;
+
+	for(int i=0; i<size; i++) {
+		size_t got = read(0, &fragment[i], 1);
+		if(got <= 0 || fragment[i] == '\n' || fragment[i] == '\r') {
+			fragment[i]=0;
+			*buffer = malloc(offset + size); //Mohlo by se pouzit +i misto +size, ale muselo by se zohlednit i pri kopirovani
+			finished=1;
+			break;
+		}
+	}
+
+	if(!finished) readline_rec(offset+size, size*2, buffer);
+	for(int j=0; j<size; j++) (*buffer)[offset+j] = fragment[j];
+	free(fragment);
+	return;
+}
+
+
+int main() {
+	char *out = NULL;
+	readline_rec(0, 1, &out);
+	printf("Precteno: %s\n", out);
+	free(out);
+}