diff options
Diffstat (limited to 'apps/include/readline.h')
| -rw-r--r-- | apps/include/readline.h | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/apps/include/readline.h b/apps/include/readline.h index 6da6f3fd7..463643534 100644 --- a/apps/include/readline.h +++ b/apps/include/readline.h @@ -41,6 +41,7 @@ ****************************************************************************/ #include <nuttx/config.h> +#include <stdio.h> /**************************************************************************** * Pre-Processor Definitions @@ -90,7 +91,41 @@ extern "C" { * **************************************************************************/ -EXTERN ssize_t readline(FAR char *buf, int buflen, FILE *instream, FILE *outstream); +#if CONFIG_NFILE_STREAMS > 0 +ssize_t readline(FAR char *buf, int buflen, FILE *instream, FILE *outstream); +#endif + +/**************************************************************************** + * Name: std_readline + * + * std_readline is requivalent to readline except that it uses only stdin + * and stdout. + * + * This version of realine assumes that we are reading and writing to + * a VT100 console. This will not work well if 'instream' or 'outstream' + * corresponds to a raw byte steam. + * + * This function is inspired by the GNU readline but is an entirely + * different creature. + * + * Input Parameters: + * buf - The user allocated buffer to be filled. + * buflen - the size of the buffer. + * instream - The stream to read characters from + * outstream - The stream to each characters to. + * + * Returned values: + * On success, the (positive) number of bytes transferred is returned. + * EOF is returned to indicate either an end of file condition or a + * failure. + * + **************************************************************************/ + +#if CONFIG_NFILE_STREAMS > 0 +# define std_readline(b,s) readline(b,s,stdin,stdout) +#else +ssize_t std_readline(FAR char *buf, int buflen); +#endif #undef EXTERN #ifdef __cplusplus |