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# extsprintf: extended POSIX-style sprintf Stripped down version of s[n]printf(3c). We make a best effort to throw an exception when given a format string we don't understand, rather than ignoring it, so that we won't break existing programs if/when we go implement the rest of this. This implementation currently supports specifying * field alignment ('-' flag), * zero-pad ('0' flag) * always show numeric sign ('+' flag), * field width * conversions for strings, decimal integers, and floats (numbers). * argument size specifiers. These are all accepted but ignored, since Javascript has no notion of the physical size of an argument. Everything else is currently unsupported, most notably: precision, unsigned numbers, non-decimal numbers, and characters. Besides the usual POSIX conversions, this implementation supports: * `%j`: pretty-print a JSON object (using node's "inspect") * `%r`: pretty-print an Error object # Example First, install it: # npm install extsprintf Now, use it: var mod_extsprintf = require('extsprintf'); console.log(mod_extsprintf.sprintf('hello %25s', 'world')); outputs: hello world # Also supported **printf**: same args as sprintf, but prints the result to stdout **fprintf**: same args as sprintf, preceded by a Node stream. Prints the result to the given stream.
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