From f53d6c05d891cb579baba519d27c8ab46dd488ae Mon Sep 17 00:00:00 2001
From: Ankush Singh Gandhi <bhanusinghank@gmail.com>
Date: Mon, 24 Jun 2024 18:51:48 +0530
Subject: [PATCH] initialized venom.c write basic functionalities like venom
 init, venom add, venom commit

---
 venom.c | 114 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 114 insertions(+)
 create mode 100644 venom.c

diff --git a/venom.c b/venom.c
new file mode 100644
index 0000000..11dc692
--- /dev/null
+++ b/venom.c
@@ -0,0 +1,114 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <unistd.h>
+
+#define REPO_DIR ".venom"
+#define INDEX_FILE ".venom/index"
+#define COMMITS_DIR ".venom/commits"
+
+void init() {
+    struct stat st = {0};
+
+    if (stat(REPO_DIR, &st) == -1) {
+        mkdir(REPO_DIR, 0700);
+        mkdir(COMMITS_DIR, 0700);
+
+        FILE *index = fopen(INDEX_FILE, "w");
+        if (index == NULL) {
+            perror("Unable to create index file");
+            exit(EXIT_FAILURE);
+        }
+        fclose(index);
+
+        printf("Initialized empty Venom repository in %s\n", REPO_DIR);
+    } else {
+        printf("Repository already exists.\n");
+    }
+}
+
+void add(const char *filename) {
+    FILE *index = fopen(INDEX_FILE, "a");
+    if (index == NULL) {
+        perror("Unable to open index file");
+        exit(EXIT_FAILURE);
+    }
+
+    fprintf(index, "%s\n", filename);
+    fclose(index);
+
+    printf("Added '%s' to the index.\n", filename);
+}
+
+void commit(const char *message) {
+    static int commit_count = 0;
+    char commit_dir[256];
+
+    sprintf(commit_dir, "%s/%d", COMMITS_DIR, commit_count);
+    mkdir(commit_dir, 0700);
+
+    FILE *index = fopen(INDEX_FILE, "r");
+    if (index == NULL) {
+        perror("Unable to open index file");
+        exit(EXIT_FAILURE);
+    }
+
+    char filename[256];
+    while (fgets(filename, sizeof(filename), index)) {
+        filename[strcspn(filename, "\n")] = 0;  // Remove newline
+
+        char cmd[512];
+        sprintf(cmd, "cp %s %s/", filename, commit_dir);
+        system(cmd);
+    }
+    fclose(index);
+
+    char commit_message_file[256];
+    sprintf(commit_message_file, "%s/message.txt", commit_dir);
+
+    FILE *message_file = fopen(commit_message_file, "w");
+    if (message_file == NULL) {
+        perror("Unable to create commit message file");
+        exit(EXIT_FAILURE);
+    }
+
+    fprintf(message_file, "%s\n", message);
+    fclose(message_file);
+
+    commit_count++;
+    printf("Committed changes as commit %d\n", commit_count - 1);
+
+    // Clear the index
+    index = fopen(INDEX_FILE, "w");
+    fclose(index);
+}
+
+int main(int argc, char *argv[]) {
+    if (argc < 2) {
+        fprintf(stderr, "Usage: %s <command> [<args>]\n", argv[0]);
+        return EXIT_FAILURE;
+    }
+
+    if (strcmp(argv[1], "init") == 0) {
+        init();
+    } else if (strcmp(argv[1], "add") == 0) {
+        if (argc < 3) {
+            fprintf(stderr, "Usage: %s add <file>\n", argv[0]);
+            return EXIT_FAILURE;
+        }
+        add(argv[2]);
+    } else if (strcmp(argv[1], "commit") == 0) {
+        if (argc < 3) {
+            fprintf(stderr, "Usage: %s commit <message>\n", argv[0]);
+            return EXIT_FAILURE;
+        }
+        commit(argv[2]);
+    } else {
+        fprintf(stderr, "Unknown command: %s\n", argv[1]);
+        return EXIT_FAILURE;
+    }
+
+    return EXIT_SUCCESS;
+}