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authorLennart Poettering <lennart@poettering.net>2015-10-26 22:34:47 +0100
committerLennart Poettering <lennart@poettering.net>2015-10-27 13:25:56 +0100
commitb8faf2ecd551d853c449c7cadc3944af84156bc9 (patch)
treee732e26b6793edd0616f3c047794da26ef894255 /src/core/show-status.c
parent8b43440b7ef4b81c69c31de7ff820dc07a780254 (diff)
util-lib: move status printing stuff into src/core/
It's very specific to the core, and not used elsewhere, hence move it out of terminal-util.[ch].
Diffstat (limited to 'src/core/show-status.c')
-rw-r--r--src/core/show-status.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/src/core/show-status.c b/src/core/show-status.c
index 9509b21ccb..91f8f8e5ad 100644
--- a/src/core/show-status.c
+++ b/src/core/show-status.c
@@ -44,3 +44,81 @@ int parse_show_status(const char *v, ShowStatus *ret) {
*ret = r ? SHOW_STATUS_YES : SHOW_STATUS_NO;
return 0;
}
+
+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[6] = {};
+ int n = 0;
+ static bool prev_ephemeral;
+
+ assert(format);
+
+ /* This is independent of logging, as status messages are
+ * optional and go exclusively to the console. */
+
+ if (vasprintf(&s, format, ap) < 0)
+ return log_oom();
+
+ fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
+ if (fd < 0)
+ return fd;
+
+ if (ellipse) {
+ char *e;
+ size_t emax, sl;
+ int c;
+
+ c = fd_columns(fd);
+ if (c <= 0)
+ c = 80;
+
+ sl = status ? sizeof(status_indent)-1 : 0;
+
+ emax = c - sl - 1;
+ if (emax < 3)
+ emax = 3;
+
+ e = ellipsize(s, emax, 50);
+ if (e) {
+ free(s);
+ s = e;
+ }
+ }
+
+ 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++], "[");
+ IOVEC_SET_STRING(iovec[n++], status);
+ IOVEC_SET_STRING(iovec[n++], "] ");
+ } else
+ IOVEC_SET_STRING(iovec[n++], status_indent);
+ }
+
+ IOVEC_SET_STRING(iovec[n++], s);
+ if (!ephemeral)
+ IOVEC_SET_STRING(iovec[n++], "\n");
+
+ if (writev(fd, iovec, n) < 0)
+ return -errno;
+
+ return 0;
+}
+
+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, ephemeral, format, ap);
+ va_end(ap);
+
+ return r;
+}