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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/vt_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/vt_dsk.cpp')
-rw-r--r--src/lib/formats/vt_dsk.cpp47
1 files changed, 31 insertions, 16 deletions
diff --git a/src/lib/formats/vt_dsk.cpp b/src/lib/formats/vt_dsk.cpp
index d6cc3da4521..15c6955bfcc 100644
--- a/src/lib/formats/vt_dsk.cpp
+++ b/src/lib/formats/vt_dsk.cpp
@@ -10,6 +10,9 @@
#include "formats/vt_dsk.h"
+#include "ioprocs.h"
+
+
// Zero = | 9187 |
// One = | 2237 | 6950 |
// 0.5us ~= 143
@@ -213,9 +216,11 @@ const char *vtech_dsk_format::extensions() const
return "dsk";
}
-int vtech_bin_format::identify(io_generic *io, uint32_t form_factor, const std::vector<uint32_t> &variants)
+int vtech_bin_format::identify(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants)
{
- int size = io_generic_size(io);
+ uint64_t size;
+ if(io.length(size))
+ return 0;
if(size == 40*16*256)
return 50;
@@ -223,14 +228,18 @@ int vtech_bin_format::identify(io_generic *io, uint32_t form_factor, const std::
return 0;
}
-int vtech_dsk_format::identify(io_generic *io, uint32_t form_factor, const std::vector<uint32_t> &variants)
+int vtech_dsk_format::identify(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants)
{
- int size = io_generic_size(io);
+ uint64_t size;
+ if(io.length(size))
+ return 0;
+
if(size < 256)
return 0;
std::vector<uint8_t> bdata(size);
- io_generic_read(io, bdata.data(), 0, size);
+ size_t actual;
+ io.read_at(0, bdata.data(), size, actual);
// Structurally validate the presence of sector headers and data
int count_sh = 0, count_sd = 0;
@@ -246,25 +255,29 @@ int vtech_dsk_format::identify(io_generic *io, uint32_t form_factor, const std::
return count_sh >= 30*16 && count_sd >= 30*16 ? 100 : 0;
}
-bool vtech_bin_format::load(io_generic *io, uint32_t form_factor, const std::vector<uint32_t> &variants, floppy_image *image)
+bool vtech_bin_format::load(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants, floppy_image *image)
{
- int size = io_generic_size(io);
- if(size != 40*16*256)
+ uint64_t size;
+ if(io.length(size) || (size != 40*16*256))
return false;
std::vector<uint8_t> bdata(size);
- io_generic_read(io, bdata.data(), 0, size);
+ size_t actual;
+ io.read_at(0, bdata.data(), size, actual);
image_to_flux(bdata, image);
image->set_form_variant(floppy_image::FF_525, floppy_image::SSSD);
return true;
}
-bool vtech_dsk_format::load(io_generic *io, uint32_t form_factor, const std::vector<uint32_t> &variants, floppy_image *image)
+bool vtech_dsk_format::load(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants, floppy_image *image)
{
- int size = io_generic_size(io);
+ uint64_t size;
+ if(io.length(size))
+ return false;
std::vector<uint8_t> bdata(size);
- io_generic_read(io, bdata.data(), 0, size);
+ size_t actual;
+ io.read_at(0, bdata.data(), size, actual);
std::vector<uint8_t> bdatax(128*16*40, 0);
@@ -327,7 +340,7 @@ bool vtech_dsk_format::load(io_generic *io, uint32_t form_factor, const std::vec
return true;
}
-bool vtech_bin_format::save(io_generic *io, const std::vector<uint32_t> &variants, floppy_image *image)
+bool vtech_bin_format::save(util::random_read_write &io, const std::vector<uint32_t> &variants, floppy_image *image)
{
int tracks, heads;
image->get_maximal_geometry(tracks, heads);
@@ -335,11 +348,12 @@ bool vtech_bin_format::save(io_generic *io, const std::vector<uint32_t> &variant
return false;
auto bdata = flux_to_image(image);
- io_generic_write(io, bdata.data(), 0, bdata.size());
+ size_t actual;
+ io.write_at(0, bdata.data(), bdata.size(), actual);
return true;
}
-bool vtech_dsk_format::save(io_generic *io, const std::vector<uint32_t> &variants, floppy_image *image)
+bool vtech_dsk_format::save(util::random_read_write &io, const std::vector<uint32_t> &variants, floppy_image *image)
{
int tracks, heads;
image->get_maximal_geometry(tracks, heads);
@@ -387,7 +401,8 @@ bool vtech_dsk_format::save(io_generic *io, const std::vector<uint32_t> &variant
}
}
- io_generic_write(io, bdatax.data(), 0, bdatax.size());
+ size_t actual;
+ io.write_at(0, bdatax.data(), bdatax.size(), actual);
return true;
}