From c851f16d1df21d7579af72d842521b951261b092 Mon Sep 17 00:00:00 2001
From: Vincent Douillet <vincent@vdouillet.fr>
Date: Thu, 2 Dec 2021 22:46:01 +0100
Subject: day 1 & 2

---
 input.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 input.c

(limited to 'input.c')

diff --git a/input.c b/input.c
new file mode 100644
index 0000000..5d184bb
--- /dev/null
+++ b/input.c
@@ -0,0 +1,55 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <err.h>
+
+/*public*/size_t count_lines(FILE* file) {
+	size_t lineCount = 0;
+	char currentChar;
+	// on part du debut
+	// TODO verifier le code de retour
+	fseek(file, 0, SEEK_SET);
+	while((currentChar=fgetc(file)) != EOF) {
+		if(currentChar == '\n')
+			lineCount++;
+	}
+	return lineCount;
+}
+
+/*public*/int read_lines_as_int(FILE* file, int* result, int resultSize) {
+	// retour au debut du fichier et lecture des lignes
+	// TODO verifier le code de retour
+	fseek(file, 0, SEEK_SET);
+	int current;
+	for(int lineIndex = 0; lineIndex < resultSize; lineIndex++) {
+		if(fscanf(file, "%d", &current) != 1) {
+			result[lineIndex] = 0;
+			printf("Erreur de lecture ligne %d\n", lineIndex);
+			continue;
+		}
+		result[lineIndex] = current;
+	}
+
+	return 0;
+}
+
+/*public*/int read_lines_as_string(FILE* file, char** result, int resultSize) {
+	// retour au debut du fichier et lecture des lignes
+	// TODO verifier le code de retour
+	fseek(file, 0, SEEK_SET);
+	size_t lineSize = 0;
+	for(int lineIndex = 0; lineIndex < resultSize; lineIndex++) {
+		char** dst = &result[lineIndex];
+		if(getline(dst, &lineSize, file) < 0)
+			err(1, "Erreur de lecture ligne %d\n", lineIndex);
+	}
+
+	return 0;
+}
+
+/*public*/void free_strings(char** strings, size_t stringCount) {
+	for(size_t i = 0; i < stringCount; i++) {
+		free(strings[i]);
+	}
+	free(strings);
+}
-- 
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