About

CTRTool is a general purpose reading/extraction tool for Nintendo 3DS file formats.

Supported File Formats

ExeFs (.exefs)
RomFs (.romfs) (and RomFS wrapped in IVFC)
NCCH Format Variants:
- CTR Executable Image (.cxi)
- CTR File Archive (.cfa)
- CTR Initial Process (.cip)
NCCH ExtendedHeader (.exhdr)
CTR Importable Archive (.cia)
NCSD Format Variants:
- CTR Card Image (.cci/.3ds/.3dz)
- CTR System Update (.csu)
ES TitleMetaData (.tmd)
ES eTicket (.tik)
Firmware Images (.firm)
CRR (.crr)

[NEW] Add CLI option -q/--quiet which enables silent mode ( #113 )
[Change] When displaying ExHeader fields, Access info was renamed to FS access
[Change] CTRTool now distingushes between three types of output
- General output (information about a file)
  - These are printed to stdout.
  - These are the only output silenced in silent mode.
- Warnings & Progress Indicators
  - These are printed to stderr.
  - This information is only shown in verbose mode.
  - These are prefixed in output with a tag [ctrtool::ClassNameHere LOG] ...
  - Progress indicators include output like Extracting X to Y...
- Errors
  - These are printed to stderr.
  - These will always be shown.
  - These are prefixed in output with a tag [ctrtool::ClassNameHere ERROR] ...
  - Note verification errors are only shown in verify mode.
    - Errors with IVFC blocks will invalidate the whole IVFC layer, which is displayed as one error. To display where each block is invalid use verbose output mode.
    - Errors with ExtendedHeader FsAccess bits invalidate the whole bit-field, which is displayed as one error. To display where each bit is invalid use verbose output mode.
    - Errors with ExtendedHeader ServiceAccess entries invalidate the whole set, which is displayed as one error. To display where each entry is invalid use verbose output mode.