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ftcsv/ERRORS.md
FourierTransformer 86686314e0
New Release 1.2.0 (#26) 
## Features
 * Can now parse files line by line in a fixed-size reading mode
 * Now has an option to ignore quotes when parsing

## Improvements
 * Speed increases in vanilla Lua and LuaJIT (benchmarks updated!)
 * Refactored code for easier maintenance

## Bugfixes
 * Better handling of multiple escaped quotes in vanilla lua (thanks @fredrikj83 #25)
2020-04-04 13:47:24 -05:00

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Error Handling

Below you can find a more detailed explanation of some of the errors that can be encountered while using ftcsv. For parsing, examples of these files can be found in /spec/bad_csvs/

Parsing

Note: [row_number] indicates the row number of the parsed lua table. As such, it will be one off from the line number in the csv. However, for header-less files, the row returned will match the csv line number.

Error Message Detailed Explanation
ftcsv: Cannot parse an empty file The file passed in contains no information. It is an empty file.
ftcsv: Cannot parse a file which contains empty headers If a header field contains no information, then it can't be parsed
(ex: Name,City,,Zipcode)
ftcsv: too few columns in row [row_number] The number of columns is less than the amount in the header after transformations (renaming, keeping certain fields, etc)
ftcsv: too many columns in row [row_number] The number of columns is greater than the amount in the header after transformations. It can't map the field's count with an existing header.
ftcsv: File not found at [path] When loading, lua can't open the file at [path]
ftcsv: fieldsToKeep only works with header-less files when using the 'rename' functionality when dealing with header-less files, you can only use the fieldsToKeep if you use rename. The fields are limited after the renaming happens
ftcsv: bufferSize needs to be larger to parse this file The buffer size selected is too small to parse the file. It must be at least the length of the longest row (but, for performance, should probably be a bit larger).
ftcsv: parseLine currently doesn't support loading from string parseLine relies on reading a file a few bytes at a time and currently doesn't work on strings
ftcsv: bufferSize can only be specified using 'parseLine'. When using 'parse', the entire file is read into memory bufferSize can't be specified for parse, it can only be specified for parseLine