From 7f5ecacd12e7908a3f1575b53920c10dac2e9a56 Mon Sep 17 00:00:00 2001
From: verdant <im@verdant.ee>
Date: Sun, 31 May 2026 11:38:49 +0800
Subject: Remove cmark, refactor all

Implement head and split line parser
---
 main.c | 38 ----------------------------
 vmp.c  | 91 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 vmp.h  | 24 ++++++++++++++++++
 3 files changed, 115 insertions(+), 38 deletions(-)
 delete mode 100644 main.c
 create mode 100644 vmp.c
 create mode 100644 vmp.h

diff --git a/main.c b/main.c
deleted file mode 100644
index deeff4a..0000000
--- a/main.c
+++ /dev/null
@@ -1,38 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <cmark.h>
-#include <string.h>
-
-#define MAX_SIZE 1024
-#define BUFFER_SIZE 4096
-
-/* TODO: Add custom syntax filter */
-int apply_custom_syntax(char *input);
-
-int main()
-{
-	size_t cap = BUFFER_SIZE;
-	size_t len = 0;
-	char *markdown_input = malloc(cap);
-
-	char buffer[BUFFER_SIZE];
-	while (fgets(buffer, sizeof(buffer), stdin) != NULL) {
-		size_t line_len = strlen(buffer);
-		if (len + line_len >= cap) {
-			cap *= 2;
-			markdown_input = realloc(markdown_input, cap);
-		}
-		strcpy(markdown_input + len, buffer);
-		len += line_len;
-	}
-	char *html_output =
-		cmark_markdown_to_html(markdown_input, len, CMARK_OPT_DEFAULT);
-
-	if (html_output) {
-		printf("%s", html_output);
-		free(html_output);
-	}
-
-	free(markdown_input);
-	return 0;
-}
diff --git a/vmp.c b/vmp.c
new file mode 100644
index 0000000..1480d4b
--- /dev/null
+++ b/vmp.c
@@ -0,0 +1,91 @@
+#include <stdio.h>
+#include "vmp.h"
+
+int main(int argc, char** argv)
+{
+
+	/* Get input and output file name */
+	if (argc != 2) {
+		error("Usage: vmp <INPUT_FILE_NAME>\n", NO_ARG);
+	}
+
+	const char* in_file_name = argv[1];
+	if (sizeof(in_file_name) <= 3) {
+		error("File name is too short\n",IN_NAME_TOO_SHORT);
+	}
+
+	run(in_file_name);
+	return 0;
+}
+
+void error(const char* msg, int code) {
+	printf("%s", msg);
+	exit(code);
+}
+
+void run(const char* in_file_name) {
+	FILE* fd = fopen(in_file_name, "r");
+	if (!fd) {
+		error("Cannot open input file.\n", CANNOT_OPEN_FILE);
+       	}
+
+	char line[1024];
+	while(fgets(line, sizeof(line), fd) != NULL) {
+		int len = strlen(line);
+		while (len > 0 && isspace(line[len - 1])) {
+			line[--len] = '\0';
+		}
+
+		parse_and_output(line);
+	}
+
+	fclose(fd);
+}
+
+void parse_head(const char* line) {
+	int level = 0;
+	size_t i = 0;
+
+	while(line[i] == '#' && i < strlen(line)) {
+		level++;
+		i++;
+	}
+
+	if (i < strlen(line) && line[i] == ' ' && level <=6 ) {
+		printf("<h%d>", level);
+
+		int start = i;
+		int length = strlen(line);
+		char head_text[512];
+		strncpy(head_text, line + start + 1, length);
+
+		printf("%s", head_text);
+		printf("</h%d>", level);
+	} else {
+		int start = i;
+		int length = strlen(line);
+		char head_text[512];
+		strncpy(head_text, line + start + 1, length);
+
+		printf("%s", head_text);		
+	}
+}
+
+void parse_and_output(const char* line) {
+	int in_empty_line = 0;
+
+	/* Empty */
+	if (strcmp(line, "") == 0) {
+		printf("<br>\n");
+		in_empty_line = 1;
+	} else {
+		in_empty_line = 0;
+		char line_head = line[0];
+
+		if (line_head == '#') {
+			parse_head(line);
+		} else if (strcmp(line, "---") == 0) {
+			printf("<hr>\n");
+		}
+	} 
+}
diff --git a/vmp.h b/vmp.h
new file mode 100644
index 0000000..0d81624
--- /dev/null
+++ b/vmp.h
@@ -0,0 +1,24 @@
+#ifndef VMP_H
+#define VMP_H
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+
+
+
+#define NO_ARG 1
+#define IN_NAME_TOO_SHORT 2
+#define CANNOT_OPEN_FILE 3
+#define IsSpecial(c) ((c) == '*' || (c) == '_' || (c) == '~' || (c) == '`')
+
+void error(const char* msg, int code);
+void run(const char* in_file_name);
+
+void parse_and_output(const char* line);
+char parse_normal_line(char* line);
+void parse_line(const char* line);
+
+
+#endif
-- 
cgit v1.2.3