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27 lines
746 B
Groff
27 lines
746 B
Groff
.TH scan_ip4 3
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.SH NAME
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scan_ip4 \- parse an IPv4 number in dotted-decimal notation
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.SH SYNTAX
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.B #include <ip4.h>
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int \fBscan_ip4\fP(const char *\fIsrc\fR,char \fIip\fR[4]);
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.SH DESCRIPTION
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scan_ip4 parses an IPv4 number in dotted-decimal ASCII representation
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from \fIsrc\fR and writes the result into \fIip\fR. It returns the
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number of bytes read from \fIsrc\fR or 0 if the parsing failed.
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Unlike many other IP parsing routines, scan_ip4 does not recognize octal
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(like \fB0177.0.0.1\fR) or hexadecimal numbers (like \fB0x7f000001\fR).
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.SH EXAMPLE
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#include <str.h>
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.br
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#include <ip4.h>
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char buf[]="160.45.40.10";
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char ip[4];
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if (scan_ip4(buf,ip) != str_len(buf))
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parse_error();
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.SH "SEE ALSO"
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fmt_ip4(3), scan_ip6(3), inet_pton(3)
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