From 8d3a5e5f51153c38f4c5b20a309af2b6e5bf686d Mon Sep 17 00:00:00 2001
From: Daniel Liu <mr.picklepinosaur@gmail.com>
Date: Sun, 20 Dec 2020 23:57:31 -0500
Subject: [PATCH] file reading

---
 parser.c | 52 +++++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 43 insertions(+), 9 deletions(-)

diff --git a/parser.c b/parser.c
index 9a2c7f9..3c28349 100644
--- a/parser.c
+++ b/parser.c
@@ -10,6 +10,8 @@ typedef struct TodoItem {
     char** items;
 } TodoItem;
 
+char* read_file(char* file_name, long* size);
+
 /* callbacks to parser */
 int enter_block(MD_BLOCKTYPE type, void* detail, void* userdata);
 int leave_block(MD_BLOCKTYPE type, void* detail, void* userdata);
@@ -19,7 +21,7 @@ int text(MD_TEXTTYPE type, const MD_CHAR* text, MD_SIZE size, void* userdata);
 void debug_log(const char* msg, void* userdata);
 void syntax(void);
 
-static MD_PARSER parser = {
+const MD_PARSER parser = {
     0,
     MD_DIALECT_COMMONMARK,
     &enter_block,
@@ -31,22 +33,54 @@ static MD_PARSER parser = {
     &syntax
 };
 
-static char task_md[] = "###";
 int
 main(int argc, char** argv)
 {
-    FILE* input_file;
-    int todo_length;
+    char* input_buffer;
+    long input_size;
 
-    input_file = fopen("test_board.md", "r");     
-    if (!input_file) {
-        printf("Something went wrong opening file");
-        return 1;
-    }
+    input_buffer = read_file("test_board.md", &input_size);
+
+    md_parse(input_buffer, input_size, &parser, NULL);
 
     return 0;    
 }
 
+char*
+read_file(char* file_name, long* size) 
+{ // apparently using seek isnt the greatest, may change to chunk reading later
+    FILE* file;
+    char* output;
+    long fsize;
+
+    file = fopen(file_name, "r");
+    if (file == NULL) {
+        printf("Something went wrong opening file\n");
+        return NULL;
+    }
+
+    fseek(file, 0, SEEK_END);
+    fsize = ftell(file);
+    fseek(file, 0, SEEK_SET);
+
+    output = malloc(fsize+1); // maybe error check malloc
+    fread(output, 1, fsize, file);
+    if (ferror(file)) {
+        printf("Something went wrong reading file\n");
+        fclose(file);
+        free(output);
+        return NULL;
+    }
+    output[fsize] = 0; // add null terminator
+    
+    /* clean up */
+    fclose(file);
+
+    /* return */
+    *size = fsize;
+    return output;
+}
+
 int
 enter_block(MD_BLOCKTYPE type, void* detail, void* userdata)
 {
-- 
2.20.1