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authorMichal Schmidt <mschmidt@redhat.com>2012-05-14 12:50:33 +0200
committerMichal Schmidt <mschmidt@redhat.com>2012-05-14 14:29:53 +0200
commit9ab7a8d2a30f440c008d127113419030e4572cb4 (patch)
treed7e8f92fe9aad4c5ed4bca5d5e00ee5d6805b8b8 /src
parent5f23d5b149513d98bb90df8cb912b6f567bed89f (diff)
unit: print the color status marks on the left
The alignment of the "[ OK ]" and "[FAILED]" status marks to the right side of the terminal makes it difficult to link them with the messages on the left if your console is wide. I considered the options: 1. Align them to the 80th column regardless of the console width. Disadvantage - either: - truncating messages needlessly, not using available space; or - If the message is long, write the mark over it. => ugly 2. Write them to the 80th column for short messages, and further to the right for longer ones. Disadvantage: - jagged look 3. Write the marks on the left, before the message. Disadvantage: - Breaks tradition from RHL. Advantages: + slightly simpler code + Will annoy holy-traditionalists. I chose option 3. BTW, Debian now uses similar marks on the left with its makefile-style boot. Special values of the "status" argument to status_vprintf are: NULL - no status mark, no message indentation "" - no status mark, message indented as if the mark was there
Diffstat (limited to 'src')
-rw-r--r--src/core/unit.c4
-rw-r--r--src/shared/util.c51
2 files changed, 24 insertions, 31 deletions
diff --git a/src/core/unit.c b/src/core/unit.c
index 68948574ed..ddcfad5912 100644
--- a/src/core/unit.c
+++ b/src/core/unit.c
@@ -981,7 +981,7 @@ int unit_start(Unit *u) {
unit_add_to_dbus_queue(u);
- unit_status_printf(u, NULL, "Starting %s...", unit_description(u));
+ unit_status_printf(u, "", "Starting %s...", unit_description(u));
return UNIT_VTABLE(u)->start(u);
}
@@ -1023,7 +1023,7 @@ int unit_stop(Unit *u) {
unit_add_to_dbus_queue(u);
- unit_status_printf(u, NULL, "Stopping %s...", unit_description(u));
+ unit_status_printf(u, "", "Stopping %s...", unit_description(u));
return UNIT_VTABLE(u)->stop(u);
}
diff --git a/src/shared/util.c b/src/shared/util.c
index c9899fb932..d6af927453 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -3329,15 +3329,15 @@ cpu_set_t* cpu_set_malloc(unsigned *ncpus) {
}
void status_vprintf(const char *status, bool ellipse, const char *format, va_list ap) {
- char *s = NULL, *spaces = NULL, *e;
- int fd = -1, c;
- size_t emax, sl, left;
+ char *s = NULL;
+ static const char status_indent[] = " "; /* "[" STATUS "] " */
+ int fd = -1;
struct iovec iovec[5];
int n = 0;
assert(format);
- /* This independent of logging, as status messages are
+ /* This is independent of logging, as status messages are
* optional and go exclusively to the console. */
if (vasprintf(&s, format, ap) < 0)
@@ -3348,15 +3348,19 @@ void status_vprintf(const char *status, bool ellipse, const char *format, va_lis
goto finish;
if (ellipse) {
+ char *e;
+ size_t emax, sl;
+ int c;
+
c = fd_columns(fd);
if (c <= 0)
c = 80;
- if (status) {
- sl = 2 + 6 + 1; /* " [" status "]" */
- emax = (size_t) c > sl ? c - sl - 1 : 0;
- } else
- emax = c - 1;
+ sl = status ? strlen(status_indent) : 0;
+
+ emax = c - sl - 1;
+ if (emax < 3)
+ emax = 3;
e = ellipsize(s, emax, 75);
if (e) {
@@ -3366,34 +3370,23 @@ void status_vprintf(const char *status, bool ellipse, const char *format, va_lis
}
zero(iovec);
- IOVEC_SET_STRING(iovec[n++], s);
- if (ellipse) {
- sl = strlen(s);
- left = emax > sl ? emax - sl : 0;
- if (left > 0) {
- spaces = malloc(left);
- if (spaces) {
- memset(spaces, ' ', left);
- iovec[n].iov_base = spaces;
- iovec[n].iov_len = left;
- n++;
- }
- }
+ 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);
}
- if (status) {
- IOVEC_SET_STRING(iovec[n++], " [");
- IOVEC_SET_STRING(iovec[n++], status);
- IOVEC_SET_STRING(iovec[n++], "]\n");
- } else
- IOVEC_SET_STRING(iovec[n++], "\n");
+ IOVEC_SET_STRING(iovec[n++], s);
+ IOVEC_SET_STRING(iovec[n++], "\n");
writev(fd, iovec, n);
finish:
free(s);
- free(spaces);
if (fd >= 0)
close_nointr_nofail(fd);