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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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