X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=fd.c;h=df7921b4f393c4b4c2bcfc963c757c0a67aec661;hp=dd07466cef2623e5aaa053178d7eda9e992e3dcd;hb=fcbaa47c0cb6e3e45bf1c465180752289bbe8b6b;hpb=c715d5c6ec226fe172ef3b8a52ccf769b745594b diff --git a/fd.c b/fd.c index dd07466c..df7921b4 100644 --- a/fd.c +++ b/fd.c @@ -140,3 +140,35 @@ __must_check int para_fread(void *dest, size_t nbytes, size_t nmemb, FILE *strea return 0; return -E_FREAD; } +/** +* paraslash's wrapper for fgets(3) +* \param line pointer to the buffer to store the line +* \param size the size of the buffer given by \a line +* \param f the stream to read from +* +* \return Unlike the standard fgets() function, an integer value +* is returned. On success, this function returns 1. On errors, -E_FGETS +* is returned. A zero return value indicates an end of file condition. +*/ +__must_check int para_fgets(char *line, int size, FILE *f) +{ +again: + if (fgets(line, size, f)) + return 1; + if (feof(f)) + return 0; + if (!ferror(f)) + return -E_FGETS; + if (errno != EINTR) { + PARA_ERROR_LOG("%s\n", strerror(errno)); + return -E_FGETS; + } + clearerr(f); + goto again; +} + +int para_fseek(FILE *stream, long offset, int whence) +{ + int ret = fseek(stream, offset, whence); + return ret < 0? -E_FSEEK : ret; +}