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Stop forcing cassette image create when loading zero-length images. Also minor C++-ifications to cassette code (usage of bool and std::string, C++ comments)

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This commit is contained in:
Nathan Woods 2016-08-20 16:43:10 -04:00
parent 27aae4d028
commit 02b9749216
3 changed files with 12 additions and 13 deletions
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11
src/devices/imagedev/cassette.cpp
View File

@ -265,26 +265,25 @@ image_init_result cassette_image_device::internal_load(bool is_create)
{
casserr_t err;
int cassette_flags;
int is_writable;
bool is_writable;
device_image_interface *image = nullptr;
interface(image);
if (is_create || (length() == 0))
if (is_create)
{
/* creating an image */
// creating an image
err = cassette_create((void *)image, &image_ioprocs, &wavfile_format, m_create_opts, CASSETTE_FLAG_READWRITE|CASSETTE_FLAG_SAVEONEXIT, &m_cassette);
if (err)
goto error;
}
else
{
/* opening an image */
// opening an image
do
{
is_writable = !is_readonly();
cassette_flags = is_writable ? (CASSETTE_FLAG_READWRITE|CASSETTE_FLAG_SAVEONEXIT) : CASSETTE_FLAG_READONLY;
std::string fname;
err = cassette_open_choices((void *)image, &image_ioprocs, filetype().c_str(), m_formats, cassette_flags, &m_cassette);
err = cassette_open_choices((void *)image, &image_ioprocs, filetype(), m_formats, cassette_flags, &m_cassette);
}
while(err && is_writable);

12
src/lib/formats/cassimg.cpp
View File

@ -109,18 +109,18 @@ static void cassette_finishinit(casserr_t err, cassette_image *cassette, cassett
static int good_format(const struct CassetteFormat *format, const char *extension, int flags)
static bool good_format(const struct CassetteFormat *format, const std::string &extension, int flags)
{
if (extension && !image_find_extension(format->extensions, extension))
return FALSE;
if (!extension.empty() && !image_find_extension(format->extensions, extension.c_str()))
return false;
if (((flags & CASSETTE_FLAG_READONLY) == 0) && !format->save)
return FALSE;
return TRUE;
return false;
return true;
}
casserr_t cassette_open_choices(void *file, const struct io_procs *procs, const char *extension,
casserr_t cassette_open_choices(void *file, const struct io_procs *procs, const std::string &extension,
const struct CassetteFormat *const *formats, int flags, cassette_image **outcassette)
{
casserr_t err;

2
src/lib/formats/cassimg.h
View File

@ -160,7 +160,7 @@ CASSETTE_FORMATLIST_EXTERN(cassette_default_formats);
casserr_t cassette_open(void *file, const struct io_procs *procs,
const struct CassetteFormat *format, int flags, cassette_image **outcassette);
casserr_t cassette_open_choices(void *file, const struct io_procs *procs, const char *extension,
casserr_t cassette_open_choices(void *file, const struct io_procs *procs, const std::string &extension,
const struct CassetteFormat *const *formats, int flags, cassette_image **outcassette);
casserr_t cassette_create(void *file, const struct io_procs *procs, const struct CassetteFormat *format,
const struct CassetteOptions *opts, int flags, cassette_image **outcassette);