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.TH buffer_getline_sa 3
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.SH NAME
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buffer_getline_sa \- read line from buffer
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.SH SYNTAX
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.nf
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.B #include <stralloc.h>
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.B #include <buffer.h>
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int \fBbuffer_getline_sa\fP(buffer* \fIb\fR,stralloc* \fIsa\fR);
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.SH DESCRIPTION
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buffer_getline_sa appends data from the \fIb\fR to \fIsa\fR until a '\\n'
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is found, NOT overwriting the previous content of \fIsa\fR. The new-line
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is also appended to \fIsa\fR.
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If reading from the buffer or allocating memory fails,
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buffer_getline_sa returns -1 and sets \fIerrno\fR appropriately. At
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that point \fIsa\fR may be empty or it may already contain a partial
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token.
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.SH "RETURN VALUE"
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-1 on error (setting errno), 0 on EOF, 1 when successful.
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.SH RATIONALE
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buffer_getline_sa appends instead of overwriting so it can be used on
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non-blocking sockets (these signal error and set \fIerrno\fR to EAGAIN;
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in this case you can simply call buffer_getline_sa again when
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\fBselect\fR or \fBpoll\fR indicate more data is available).
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.SH "SEE ALSO"
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buffer_get_token_sa(3), buffer(3)
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