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Don't mix code and decls in loadFileToMemory()

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My next commit will involve using goto to jump to the end of a function
to initialize the variables to NULL, but that results in a compiler
error if we have initializations in the middle of the function. We might
as well put all declarations at the top of each block anyway, to help
the move to C, so I'm doing this now.

Since the length variable in the STDIN block now overshadows the length
variable in the outer block, I've renamed the length variable in the
block to stdin_length.
This commit is contained in:
Misa 2021-04-18 10:29:23 -07:00 committed by Ethan Lee
parent 120bb7288b
commit 8c8118e43f
1 changed files with 12 additions and 7 deletions
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19
desktop_version/src/FileSystemUtils.cpp
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@ -447,11 +447,16 @@ void FILESYSTEM_loadFileToMemory(
size_t *len,
bool addnull
) {
PHYSFS_File *handle;
PHYSFS_sint64 length;
PHYSFS_sint64 success;
if (SDL_strcmp(name, "levels/special/stdin.vvvvvv") == 0)
{
// this isn't *technically* necessary when piping directly from a file, but checking for that is annoying
static std::vector<char> STDIN_BUFFER;
static bool STDIN_LOADED = false;
size_t stdin_length;
if (!STDIN_LOADED)
{
std::istreambuf_iterator<char> begin(std::cin), end;
@ -460,14 +465,14 @@ void FILESYSTEM_loadFileToMemory(
STDIN_LOADED = true;
}
size_t length = STDIN_BUFFER.size() - 1;
stdin_length = STDIN_BUFFER.size() - 1;
if (len != NULL)
{
*len = length;
*len = stdin_length;
}
++length;
*mem = static_cast<unsigned char*>(SDL_malloc(length)); // STDIN_BUFFER.data() causes double-free
++stdin_length;
*mem = static_cast<unsigned char*>(SDL_malloc(stdin_length)); // STDIN_BUFFER.data() causes double-free
if (*mem == NULL)
{
VVV_exit(1);
@ -476,12 +481,12 @@ void FILESYSTEM_loadFileToMemory(
return;
}
PHYSFS_File *handle = PHYSFS_openRead(name);
handle = PHYSFS_openRead(name);
if (handle == NULL)
{
return;
}
PHYSFS_sint64 length = PHYSFS_fileLength(handle);
length = PHYSFS_fileLength(handle);
if (len != NULL)
{
if (length < 0)
@ -507,7 +512,7 @@ void FILESYSTEM_loadFileToMemory(
VVV_exit(1);
}
}
PHYSFS_sint64 success = PHYSFS_readBytes(handle, *mem, length);
success = PHYSFS_readBytes(handle, *mem, length);
if (success == -1)
{
FILESYSTEM_freeMemory(mem);