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File extension is in extensions list: Difference between revisions
File extension is in extensions list (view source)
Revision as of 12:44, 2 September 2016
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=={{header|Fortran}}==
{{update|Fortran}}
The plan is to use the extractor function for file name extensions that was defined in another problem to obtain the extension's text, then use that text to index a character string of approved extensions. These are defined with the period included, but no extension's text can include a period - all start with a period and continue with letters or digits only - so the specification of a list of such items need not mess about with quotes and commas and so forth. The deed is done via function EXTIN(FNAME,LIST), but there is a lot of support stuff in the absence of an existing library to call upon.
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