diff options
Diffstat (limited to 'lib/getline.c')
-rw-r--r-- | lib/getline.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/lib/getline.c b/lib/getline.c new file mode 100644 index 0000000..7d06d43 --- /dev/null +++ b/lib/getline.c @@ -0,0 +1,56 @@ +/* + * Copyright (C) 1993-2001 by Darren Reed. + * + * See the IPFILTER.LICENCE file for details on licencing. + * + * $Id: getline.c,v 1.3 2001/06/09 17:09:24 darrenr Exp $ + */ + +#include <stdio.h> +#if !defined(__SVR4) && !defined(__GNUC__) +#include <strings.h> +#endif +#include <string.h> +#include "ipf.h" + + +/* + * Similar to fgets(3) but can handle '\\' and NL is converted to NUL. + * Returns NULL if error occured, EOF encounterd or input line is too long. + */ +char *getline(str, size, file, linenum) +register char *str; +size_t size; +FILE *file; +int *linenum; +{ + char *p; + int s, len; + + do { + for (p = str, s = size;; p += (len - 1), s -= (len - 1)) { + /* + * if an error occured, EOF was encounterd, or there + * was no room to put NUL, return NULL. + */ + if (fgets(p, s, file) == NULL) + return (NULL); + len = strlen(p); + if (p[len - 1] != '\n') { + p[len] = '\0'; + break; + } + (*linenum)++; + p[len - 1] = '\0'; + if (len < 2 || p[len - 2] != '\\') + break; + else + /* + * Convert '\\' to a space so words don't + * run together + */ + p[len - 2] = ' '; + } + } while (*str == '\0'); + return (str); +} |