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Showing content from https://github.com/WizardMac/ReadStat/issues/257 below:

SAS Transport writer format parsing bug · Issue #257 · WizardMac/ReadStat · GitHub

Hi!

Just noticed there's a bug in the format parser when writing SAS xport files.

xport_write_variables is using sscanf to pull the format name, width and decimals:

sscanf(variable->format, "%s%d.%d", name, &width, &decimals);

Because there are no spaces between the name and the other bits the whole string is being consumed as the format name by %s, and width and decimals are never set. In many cases this is still interpreted correctly from the name alone, but others have issues, for e.g.:

It seems like a bit of a pain to parse - the format is <name><width>.<decimal>, but width and decimal and the period between them are all optional. Name follows the SAS naming rules, with the additional requirement that it can't end in a number.


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