Adding basic file handling.

1 files changed, 36 insertions, 0 deletions

diff --git a/mpq-bios.c b/mpq-bios.c
index a093b84..055fa48 100644
--- a/mpq-bios.c
+++ b/mpq-bios.c
@@ -363,3 +363,39 @@ int __mpqlib_seek(mpq_archive_t * mpq_a, off_t off) {
 int __mpqlib_read(mpq_archive_t * mpq_a, void * buffer, size_t size) {
     return read_data(mpq_a, buffer, size);
 }
+
+uint64_t mpqlib_ioctl(mpq_archive_t * mpq_a, enum mpqlib_ioctl_t command, int entry) {
+    switch(command) {
+    case MPQLIB_IOCTL_NO_ACTION:
+        return 0;
+    case MPQLIB_IOCTL_GET_FORMAT_VERSION:
+        return mpq_a->mpq_i->format_version;
+    case MPQLIB_IOCTL_GET_SECTOR_SIZE:
+        return mpq_a->mpq_i->sector_size;
+    case MPQLIB_IOCTL_GET_BLOCK_OFFSET:
+    case MPQLIB_IOCTL_GET_BLOCK_SIZE:
+    case MPQLIB_IOCTL_GET_FILE_SIZE:
+    case MPQLIB_IOCTL_GET_FLAGS:
+        if (entry >= mpq_a->mpq_i->block_table_entries) {
+            __mpqlib_errno = MPQLIB_ERROR_IOCTL_INVALID_ENTRY;
+            return -1;
+        }
+        switch (command) {
+        case MPQLIB_IOCTL_GET_BLOCK_OFFSET:
+            return mpq_a->mpq_i->blocks[entry].block_offset;
+        case MPQLIB_IOCTL_GET_BLOCK_SIZE:
+            return mpq_a->mpq_i->blocks[entry].block_size;
+        case MPQLIB_IOCTL_GET_FILE_SIZE:
+            return mpq_a->mpq_i->blocks[entry].file_size;
+        case MPQLIB_IOCTL_GET_FLAGS:
+            return mpq_a->mpq_i->blocks[entry].flags;
+        default:
+            // should never get there.
+            __mpqlib_errno = MPQLIB_ERROR_UNKNOWN;
+            return -1;
+        }
+    default:
+        __mpqlib_errno = MPQLIB_ERROR_INVALID_IOCTL;
+        return -1;
+    }
+}