From 2050c0e0576f05156f192aa4caf48834d2f28b14 Mon Sep 17 00:00:00 2001
From: fschildt <florian.schildt@protonmail.com>
Date: Fri, 22 Aug 2025 15:23:11 +0200
Subject: first commit

---
 src/graveyard/lin_file.c | 85 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 src/graveyard/lin_file.c

(limited to 'src/graveyard/lin_file.c')

diff --git a/src/graveyard/lin_file.c b/src/graveyard/lin_file.c
new file mode 100644
index 0000000..5f0e003
--- /dev/null
+++ b/src/graveyard/lin_file.c
@@ -0,0 +1,85 @@
+void platform_free_buffer(Platform_Buffer *buff)
+{
+    free(buff->mem);
+    buff->size = 0;
+}
+
+bool platform_read_file(Platform_Buffer *buff, const char *pathname)
+{
+    int fd = open(pathname, O_RDONLY);
+    if (fd == -1)
+    {
+        printf("error reading file %s\n", pathname);
+        return false;
+    }
+
+    struct stat statbuff;
+    if (fstat(fd, &statbuff) == -1)
+    {
+        printf("cant fstat file %s\n", pathname);
+        close(fd);
+        return false;
+    }
+
+    void *file_content = malloc(statbuff.st_size);
+    if (!file_content)
+    {
+        printf("error: out of memory\n");
+        close(fd);
+        return false;
+    }
+
+    ssize_t bytes_read = read(fd, file_content, statbuff.st_size);
+    if (bytes_read != statbuff.st_size)
+    {
+        printf("error: only read %ld/%ld bytes from file %s\n", bytes_read, statbuff.st_size, pathname);
+        close(fd);
+        free(file_content);
+        return false;
+    }
+
+    buff->size = statbuff.st_size;
+    buff->mem = file_content;
+    return true;
+}
+
+bool platform__change_to_runtime_dir()
+{
+    // prepare home
+    char *home = getenv("HOME");
+    int home_len = strlen(home);
+
+    if (home_len == 0 || home_len >= 4096) {
+        printf("home dir invalid\n");
+        return false;
+    }
+
+
+    // prepare subdir
+    // Note: it might never end with '/', but let's be sure
+    bool home_ends_with_slash = home[home_len-1] == '/';
+
+    const char *subdir = home_ends_with_slash ? ".local/share/florilia" : "/.local/share/florilia";
+    int subdir_len = strlen(subdir);
+
+    if (home_len + subdir_len >= 4096) {
+        printf("home/subdir has invalid length\n");
+        return false;
+    }
+
+
+    // set run_tree
+    char run_tree[4096];
+    memcpy(run_tree, home, home_len);
+    strcpy(run_tree + home_len, subdir);
+
+
+    // change to run_tree
+    int changed = chdir(run_tree);
+    if (changed == -1) {
+        perror("chdir");
+        return false;
+    }
+
+    return true;
+}
-- 
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