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| author | Remko Tronçon <git@el-tramo.be> | 2010-03-28 15:46:49 (GMT) |
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| committer | Remko Tronçon <git@el-tramo.be> | 2010-03-28 15:46:49 (GMT) |
| commit | f53a1ef582494458301b97bf6e546be52d7ff7e8 (patch) | |
| tree | 7571b5cbcbd8a8f1dd1c966c9045b6cb69f0e295 /3rdParty/CAres/src/ares__read_line.c | |
| parent | 638345680d72ca6acaf123f2c8c1c391f696e371 (diff) | |
| download | swift-contrib-f53a1ef582494458301b97bf6e546be52d7ff7e8.zip swift-contrib-f53a1ef582494458301b97bf6e546be52d7ff7e8.tar.bz2 | |
Moving submodule contents back.
Diffstat (limited to '3rdParty/CAres/src/ares__read_line.c')
| -rw-r--r-- | 3rdParty/CAres/src/ares__read_line.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/3rdParty/CAres/src/ares__read_line.c b/3rdParty/CAres/src/ares__read_line.c new file mode 100644 index 0000000..270e0e3 --- /dev/null +++ b/3rdParty/CAres/src/ares__read_line.c @@ -0,0 +1,67 @@ +/* $Id: ares__read_line.c,v 1.14 2009-11-10 18:41:03 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "ares.h" +#include "ares_private.h" + +/* This is an internal function. Its contract is to read a line from + * a file into a dynamically allocated buffer, zeroing the trailing + * newline if there is one. The calling routine may call + * ares__read_line multiple times with the same buf and bufsize + * pointers; *buf will be reallocated and *bufsize adjusted as + * appropriate. The initial value of *buf should be NULL. After the + * calling routine is done reading lines, it should free *buf. + */ +int ares__read_line(FILE *fp, char **buf, size_t *bufsize) +{ + char *newbuf; + size_t offset = 0; + size_t len; + + if (*buf == NULL) + { + *buf = malloc(128); + if (!*buf) + return ARES_ENOMEM; + *bufsize = 128; + } + + for (;;) + { + if (!fgets(*buf + offset, (int)(*bufsize - offset), fp)) + return (offset != 0) ? 0 : (ferror(fp)) ? ARES_EFILE : ARES_EOF; + len = offset + strlen(*buf + offset); + if ((*buf)[len - 1] == '\n') + { + (*buf)[len - 1] = 0; + break; + } + offset = len; + + /* Allocate more space. */ + newbuf = realloc(*buf, *bufsize * 2); + if (!newbuf) + return ARES_ENOMEM; + *buf = newbuf; + *bufsize *= 2; + } + return ARES_SUCCESS; +} |