From ae0520e57267dbd866fc8cd25f66f4e6af2ac118 Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Mon, 13 Jul 2020 15:59:30 +0200
Subject: Move c files into src directory

---
 src/fileutils.c | 82 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 src/fileutils.c

(limited to 'src/fileutils.c')

diff --git a/src/fileutils.c b/src/fileutils.c
new file mode 100644
index 0000000..ea57550
--- /dev/null
+++ b/src/fileutils.c
@@ -0,0 +1,82 @@
+#include "fileutils.h"
+#include "alloc.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <pwd.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+
+const char* get_home_dir() {
+    const char *home_dir = getenv("HOME");
+    if(!home_dir) {
+        struct passwd *pw = getpwuid(getuid());
+        home_dir = pw->pw_dir;
+    }
+    return home_dir;
+}
+
+int file_get_content(const char *filepath, char **data, long *size) {
+    int result = 0;
+    FILE *file = fopen(filepath, "rb");
+    if(!file) {
+        int err = -errno;
+        perror(filepath);
+        return err;
+    }
+
+    fseek(file, 0, SEEK_END);
+    *size = ftell(file);
+    if(*size == -1) {
+        fprintf(stderr, "Failed to tell the size of file %s, is it not a file?\n", filepath);
+        result = -1;
+        goto cleanup;
+    }
+    fseek(file, 0, SEEK_SET);
+
+    *data = alloc_or_crash(*size);
+    if((long)fread(*data, 1, *size, file) != *size) {
+        fprintf(stderr, "Failed to read all bytes in file %s\n", filepath);
+        result = -1;
+        goto cleanup;
+    }
+
+    cleanup:
+    fclose(file);
+    return result;
+}
+
+int create_directory_recursive(char *path) {
+    int path_len = strlen(path);
+    char *p = path;
+    char *end = path + path_len;
+    for(;;) {
+        char *slash_p = strchr(p, '/');
+        
+        // Skips first '/', we don't want to try and create the root directory
+        if(slash_p == path) {
+            ++p;
+            continue;
+        }
+
+        if(!slash_p)
+            slash_p = end;
+
+        char prev_char = *slash_p;
+        *slash_p = '\0';
+        int err = mkdir(path, S_IRWXU);
+        *slash_p = prev_char;
+        
+        if(err == -1 && errno != EEXIST)
+            return err;
+
+        if(slash_p == end)
+            break;
+        else
+            p = slash_p + 1;
+    }
+    return 0;
+}
-- 
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