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| <h3 class="section">4.36 <code>getdelim</code>—read a line up to a specified line delimiter</h3> |
| |
| <p><a name="index-getdelim-223"></a><strong>Synopsis</strong> |
| <pre class="example"> #include <stdio.h> |
| int getdelim(char **<var>bufptr</var>, size_t *<var>n</var>, |
| int <var>delim</var>, FILE *<var>fp</var>); |
| |
| </pre> |
| <p><strong>Description</strong><br> |
| <code>getdelim</code> reads a file <var>fp</var> up to and possibly including a specified |
| delimiter <var>delim</var>. The line is read into a buffer pointed to |
| by <var>bufptr</var> and designated with size *<var>n</var>. If the buffer is |
| not large enough, it will be dynamically grown by <code>getdelim</code>. |
| As the buffer is grown, the pointer to the size <var>n</var> will be |
| updated. |
| |
| <p><br> |
| <strong>Returns</strong><br> |
| <code>getdelim</code> returns <code>-1</code> if no characters were successfully read; |
| otherwise, it returns the number of bytes successfully read. |
| At end of file, the result is nonzero. |
| |
| <p><br> |
| <strong>Portability</strong><br> |
| <code>getdelim</code> is a glibc extension. |
| |
| <p>No supporting OS subroutines are directly required. |
| |
| <p><br> |
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