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author Vas Crabb <cuavas@users.noreply.github.com>2021-08-22 09:06:15 +1000
committer GitHub <noreply@github.com>2021-08-22 09:06:15 +1000
commite8bbea1fc6e94e14768509d322f6c624403ffb36 (patch)
tree74dd1606a900d83de8aecff17a6737af4113308d /src/lib/formats/img_dsk.cpp
parente319bde5fc3696d7f48f62b15b6366c4377fe5d1 (diff)
formats, osd, util: Started refactoring file I/O stuff. (#8456)
Added more modern generic I/O interfaces with implementation backed by stdio, osd_file and core_file, replacing io_generic. Also replaced core_file's build-in zlib compression with a filter. unzip.cpp, un7z.cpp: Added option to supply abstract I/O interface rather than filename. Converted osd_file, core_file, archive_file, chd_file and device_image_interface to use std::error_condition rather than their own error enums. Allow mounting TI-99 RPK from inside archives.
Diffstat (limited to 'src/lib/formats/img_dsk.cpp')
-rw-r--r--src/lib/formats/img_dsk.cpp22
1 files changed, 14 insertions, 8 deletions
diff --git a/src/lib/formats/img_dsk.cpp b/src/lib/formats/img_dsk.cpp
index 757f695d923..73ae499c764 100644
--- a/src/lib/formats/img_dsk.cpp
+++ b/src/lib/formats/img_dsk.cpp
@@ -17,6 +17,7 @@
#include "img_dsk.h"
#include "coretmpl.h" // BIT
+#include "ioprocs.h"
// Debugging
@@ -40,9 +41,12 @@ img_format::img_format()
{
}
-int img_format::identify(io_generic *io, uint32_t form_factor, const std::vector<uint32_t> &variants)
+int img_format::identify(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants)
{
- uint64_t size = io_generic_size(io);
+ uint64_t size;
+ if (io.length(size)) {
+ return 0;
+ }
if (((form_factor == floppy_image::FF_8) || (form_factor == floppy_image::FF_UNKNOWN)) &&
size == IMG_IMAGE_SIZE) {
@@ -52,17 +56,18 @@ int img_format::identify(io_generic *io, uint32_t form_factor, const std::vector
}
}
-bool img_format::load(io_generic *io, uint32_t form_factor, const std::vector<uint32_t> &variants, floppy_image *image)
+bool img_format::load(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants, floppy_image *image)
{
- uint64_t size = io_generic_size(io);
- if (size != IMG_IMAGE_SIZE) {
+ uint64_t size;
+ if (io.length(size) || (size != IMG_IMAGE_SIZE)) {
return false;
}
image->set_variant(floppy_image::SSDD);
// Suck in the whole image
std::vector<uint8_t> image_data(size);
- io_generic_read(io, (void *)image_data.data(), 0, size);
+ size_t actual;
+ io.read_at(0, image_data.data(), size, actual);
for (unsigned cyl = 0; cyl < TRACKS; cyl++) {
std::vector<uint32_t> track_data;
@@ -96,7 +101,7 @@ bool img_format::load(io_generic *io, uint32_t form_factor, const std::vector<ui
return true;
}
-bool img_format::save(io_generic *io, const std::vector<uint32_t> &variants, floppy_image *image)
+bool img_format::save(util::random_read_write &io, const std::vector<uint32_t> &variants, floppy_image *image)
{
for (int cyl = 0; cyl < TRACKS; cyl++) {
auto bitstream = generate_bitstream_from_track(cyl , 0 , CELL_SIZE , image , 0);
@@ -106,7 +111,8 @@ bool img_format::save(io_generic *io, const std::vector<uint32_t> &variants, flo
while (get_next_sector(bitstream , pos , track_no , sector_no , sector_data)) {
if (track_no == cyl && sector_no >= 1 && sector_no <= SECTORS) {
unsigned offset_in_image = (cyl * SECTORS + sector_no - 1) * SECTOR_SIZE;
- io_generic_write(io, sector_data, offset_in_image, SECTOR_SIZE);
+ size_t actual;
+ io.write_at(offset_in_image, sector_data, SECTOR_SIZE, actual);
}
}
}