From 984a2be450abac81474889b8bea4b3fbeddb26c5 Mon Sep 17 00:00:00 2001 From: Michal Schmidt Date: Wed, 27 Feb 2013 22:52:43 +0100 Subject: util, core: add support for ephemeral status lines MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Ephemeral status lines do not end with a newline and they expect to be overwritten by the next printed status line. --- src/shared/util.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) (limited to 'src/shared/util.c') diff --git a/src/shared/util.c b/src/shared/util.c index f5adedc531..cc415894a5 100644 --- a/src/shared/util.c +++ b/src/shared/util.c @@ -2859,12 +2859,13 @@ cpu_set_t* cpu_set_malloc(unsigned *ncpus) { } } -int status_vprintf(const char *status, bool ellipse, const char *format, va_list ap) { +int status_vprintf(const char *status, bool ellipse, bool ephemeral, const char *format, va_list ap) { static const char status_indent[] = " "; /* "[" STATUS "] " */ _cleanup_free_ char *s = NULL; _cleanup_close_ int fd = -1; - struct iovec iovec[5]; + struct iovec iovec[6]; int n = 0; + static bool prev_ephemeral; assert(format); @@ -2902,6 +2903,10 @@ int status_vprintf(const char *status, bool ellipse, const char *format, va_list zero(iovec); + if (prev_ephemeral) + IOVEC_SET_STRING(iovec[n++], "\r" ANSI_ERASE_TO_END_OF_LINE); + prev_ephemeral = ephemeral; + if (status) { if (!isempty(status)) { IOVEC_SET_STRING(iovec[n++], "["); @@ -2912,7 +2917,8 @@ int status_vprintf(const char *status, bool ellipse, const char *format, va_list } IOVEC_SET_STRING(iovec[n++], s); - IOVEC_SET_STRING(iovec[n++], "\n"); + if (!ephemeral) + IOVEC_SET_STRING(iovec[n++], "\n"); if (writev(fd, iovec, n) < 0) return -errno; @@ -2920,14 +2926,14 @@ int status_vprintf(const char *status, bool ellipse, const char *format, va_list return 0; } -int status_printf(const char *status, bool ellipse, const char *format, ...) { +int status_printf(const char *status, bool ellipse, bool ephemeral, const char *format, ...) { va_list ap; int r; assert(format); va_start(ap, format); - r = status_vprintf(status, ellipse, format, ap); + r = status_vprintf(status, ellipse, ephemeral, format, ap); va_end(ap); return r; -- cgit v1.2.3-54-g00ecf