Initial commit

filemanager

src/util/filemanager.c

@@ -0,0 +1,89 @@
+
+
+#include <stdio.h>
+#include <string.h>
+
+#include "filemanager.h"
+
+
+// local (private) functions
+int _get_temp_filename(char *tempname);
+
+
+file_handle_t *create_file_manager(const char *filename, const char *file_mode) {
+
+    file_handle_t *file_handle;
+    file_handle = (file_handle_t*)calloc(1, sizeof(file_handle_t));
+
+    if (filename == NULL)
+        _get_temp_filename(file_handle->filename);
+    else
+        strncpy(file_handle->filename, filename, FILE_MAXNAME);
+
+    file_handle->file = NULL;
+    strncpy(file_handle->mode, file_mode, FILE_MAXMODE);
+
+    return file_handle;
+}
+
+int delete_file_manager(file_handle_t *file_handle) {
+    free(file_handle);
+}
+
+
+int open_file(file_handle_t *file_handle) {
+    int error = 0;
+
+    if ((file_handle->file = fopen(file_handle->filename, file_handle->mode)) == NULL)
+        error = -1;
+
+    return error;
+}
+
+FILE *get_file(file_handle_t *file_handle) {
+    return file_handle->file;
+}
+
+int close_file(file_handle_t *file_handle) {
+    int error = 0;
+
+    if (file_handle->file != NULL) {
+        error = fclose(file_handle->file);
+        file_handle->file = NULL;
+    }
+    return error;
+}
+
+int remove_file(file_handle_t *file_handle) {
+    return remove(file_handle->filename);
+}
+
+
+int _get_temp_filename(char *tempname) {
+    int error = 0
+#ifdef _WIN32
+    char* name = NULL;
+
+    // --- use Windows _tempnam function to get a pointer to an
+    //     unused file name that begins with "en"
+    if ((name = _tempnam(NULL, "en") == NULL) {
+        error = -1;
+        return error;
+    }
+    else if (strlen(name) < FILE_MAXNAME)
+        strncpy(tempname, name, FILE_MAXNAME);
+    else
+        tempname = NULL;
+
+    // --- free the pointer returned by _tempnam
+    if (name)
+        free(name);
+
+    // --- for non-Windows systems:
+#else
+    // --- use system function mkstemp() to create a temporary file name
+    strncpy(tempname, "enXXXXXX", 8);
+    error = mkstemp(tempname);
+#endif
+    return error;
+}