"checkit_tiff" is an incredibly fast conformance checker for baseline TIFFs (with various extensions), see http://andreas-romeyke.de
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Andreas Romeyke ee3247428b - changed signature of __clean_render_pipeline() 2 years ago
common - helper script added to visualize PEG grammar more easily 5 years ago
example_configs - use printascii instead regex 3 years ago
src - changed signature of __clean_render_pipeline() 2 years ago
t - fixed tc count 3 years ago
tiffs_should_fail - added more minimal tiffs 2 years ago
tiffs_should_pass - added new files for tiffs_should_fail/ 5 years ago
.gitignore Ignore compiled files and build directory. 5 years ago
BUGS - renamed checkit/ checkit_tiff/ to prepare repos split 6 years ago
FAQ - extended with questions to performance and repair options 3 years ago
LICENSE - fixed copyright years 3 years ago
README.1st_checkit - minor 3 years ago
README.TIFFrisks - fixed typos 4 years ago
README.TIFFspecification - fixed typos 4 years ago
README.compile - added hint if segfault on highly corrupted tiff files 2 years ago
README.grammar - added hint about checkit_check_config 4 years ago
README.icc - added hint about ICC 5 years ago
README.regex - fixed typos 4 years ago
TODO - renamed checkit/ checkit_tiff/ to prepare repos split 6 years ago
grammar.xhtml - new grammar with enhanced modes and new Content definitions 5 years ago


= RegEx =

the program uses the pcre-library for regular expressions in ascii matching
rules (in config file).

If you use a regex similar to "^[:print:]*$" it does not match on
* all strings containing characters outside of printable ascii range (see 'man
pcre2pattern' for details)
* an empty string "" will not matched, because we defined PCRE_NOTEMPTY.
An empty string is not a valid match, this behaviour is a design choice.
* Unicode is not set, because TIFF specification is in general ASCII based
(PCRE_UTF8 not set)