From 31d434f94c2adc6834ac897e2b8cffc868c0d258 Mon Sep 17 00:00:00 2001
From: Bastian Dehn <hhaalo@arcor.de>
Date: Sat, 2 Mar 2024 17:51:48 +0100
Subject: [PATCH] get config key

---
 src/kds_s2000w_config.c              | 66 +++++++++++++++++++++++++++-
 src/kds_s2000w_config.h              |  2 +-
 tests/kds_s2000w_read_config_tests.c |  2 +-
 3 files changed, 67 insertions(+), 3 deletions(-)

diff --git a/src/kds_s2000w_config.c b/src/kds_s2000w_config.c
index 2a69dbf..0b1789f 100644
--- a/src/kds_s2000w_config.c
+++ b/src/kds_s2000w_config.c
@@ -1,6 +1,70 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 #include "kds_s2000w_config.h"
 
+typedef struct {
+	int length;
+	char* line;
+} config_line;
+
+typedef struct {
+	int key_length;
+	int value_length;
+	char* key;
+	char* value;
+} config_value;
+
+void get_line(const char* config_stream, config_line* line)
+{
+	while(config_stream[line->length] != '\n') {
+		line->length++;
+	}
+	line->length++;
+
+	line->line = malloc(sizeof(char) * line->length);
+	memcpy(line->line, config_stream, line->length - 1);
+	line->line[line->length - 1] = '\0';
+}
+
+void get_key(const char* line, config_value* value)
+{
+	value->key_length = 0;
+	while(line[value->key_length] != '=') {
+		value->key_length++;
+	}
+
+	value->key = malloc(sizeof(char) * value->key_length);
+	memcpy(value->key, line, value->key_length - 1);
+	value->key[value->key_length - 1] = '\0';
+}
+
+void get_value(char* line, config_value* value)
+{
+	int i = 0;
+	while (line[i] != '=') {
+		i++;
+	}
+}
+
 void loadConfig(program_config* config, const char* config_stream)
 {
-	config->scanner_url = config_stream;
+	config_line line;
+	line.length = 0;
+	line.line = NULL;
+	config_value value;
+	value.key_length = 0;
+	value.key = NULL;
+	value.value_length = 0;
+	value.value = NULL;
+
+	get_line(config_stream, &line);
+	get_key(line.line, &value);
+
+	config->scanner_url = malloc(sizeof(char) * value.key_length);
+	memcpy(config->scanner_url, value.key, value.key_length);
+
+	free(line.line);
+	line.line = NULL;
+	line.length = 0;
 }
\ No newline at end of file
diff --git a/src/kds_s2000w_config.h b/src/kds_s2000w_config.h
index a4aed8e..80bb490 100644
--- a/src/kds_s2000w_config.h
+++ b/src/kds_s2000w_config.h
@@ -2,7 +2,7 @@
 #define KDS_S2000W_CONFIG_H
 
 typedef struct {
-	const char* scanner_url;
+	char* scanner_url;
 } program_config;
 
 void loadConfig(program_config* config, const char* config_stream);
diff --git a/tests/kds_s2000w_read_config_tests.c b/tests/kds_s2000w_read_config_tests.c
index 14488bb..75bdd83 100644
--- a/tests/kds_s2000w_read_config_tests.c
+++ b/tests/kds_s2000w_read_config_tests.c
@@ -3,7 +3,7 @@
 
 START_TEST(kds_s2000w_config_read_parameter)
 {
-	const char* input_stream = "scanner_url = http://scanner.example.com";
+	const char* input_stream = "scanner_url = http://scanner.example.com\n";
 
 	program_config* config = malloc(sizeof(program_config));
 	loadConfig(config, input_stream);
-- 
2.39.5