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Add trimming existing NDS ROMs (#104)

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Pk11 2021-07-31 21:45:19 -05:00 committed by GitHub
parent 2e83467ab5
commit d5b96dcb0b
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4 changed files with 29 additions and 1 deletions
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21
arm9/source/fileOperations.cpp
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@ -7,6 +7,7 @@
#include "date.h"
#include "file_browse.h"
#include "ndsheaderbanner.h"
#define copyBufSize 0x8000
#define shaChunkSize 0x10000
@ -102,6 +103,26 @@ bool calculateSHA1(const char *fileName, u8 *sha1)
return true;
}
int trimNds(const char *fileName)
{
FILE *file = fopen(fileName, "rb");
if(file) {
sNDSHeaderExt ndsCardHeader;
fread(&ndsCardHeader, 1, sizeof(ndsCardHeader), file);
fclose(file);
u32 romSize = (isDSiMode() && (ndsCardHeader.unitCode != 0) && (ndsCardHeader.twlRomSize > 0))
? ndsCardHeader.twlRomSize : ndsCardHeader.romSize + 0x88;
truncate(fileName, romSize);
return romSize;
}
return -1;
}
void dirCopy(DirEntry* entry, int i, const char *destinationPath, const char *sourcePath) {
std::vector<DirEntry> dirContents;
dirContents.clear();

1
arm9/source/fileOperations.h
View File

@ -24,6 +24,7 @@ extern void printBytesAlign(int bytes);
extern off_t getFileSize(const char *fileName);
extern bool calculateSHA1(const char *fileName, u8 *sha1);
extern int trimNds(const char *fileName);
extern int fcopy(const char *sourcePath, const char *destinationPath);
void changeFileAttribs(DirEntry* entry);

5
arm9/source/file_browse.cpp
View File

@ -228,6 +228,8 @@ FileOperation fileBrowse_A(DirEntry* entry, char path[PATH_MAX]) {
printf(" Mount NitroFS\n");
assignedOp[++maxCursors] = FileOperation::ndsInfo;
printf(" Show NDS file info\n");
assignedOp[++maxCursors] = FileOperation::trimNds;
printf(" Trim NDS file\n");
}
else if(extension(entry->name, {"sav", "sav1", "sav2", "sav3", "sav4", "sav5", "sav6", "sav7", "sav8", "sav9"}))
{
@ -382,6 +384,9 @@ FileOperation fileBrowse_A(DirEntry* entry, char path[PATH_MAX]) {
} case FileOperation::ndsInfo: {
ndsInfo(entry->name.c_str());
break;
} case FileOperation::trimNds: {
entry->size = trimNds(entry->name.c_str());
break;
} case FileOperation::showInfo: {
changeFileAttribs(entry);
break;

3
arm9/source/file_browse.h
View File

@ -38,6 +38,8 @@ enum class FileOperation {
bootFile,
bootstrapFile,
mountNitroFS,
ndsInfo,
trimNds,
mountImg,
restoreSave,
showInfo,
@ -45,7 +47,6 @@ enum class FileOperation {
copyFatOut,
calculateSHA1,
hexEdit,
ndsInfo,
};
bool extension(const std::string &filename, const std::vector<std::string> &extensions);