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logs-show: print multiline messages

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[    0.019862] fedora kernel: CPU0: Thermal monitoring enabled (TM1)
[    0.019900] fedora kernel: Last level iTLB entries: 4KB 512, 2MB 0, 4MB 0
                              Last level dTLB entries: 4KB 512, 2MB 32, 4MB 32
                              tlb_flushall_shift: 5
[    0.020118] fedora kernel: Freeing SMP alternatives: 24k freed
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2013-04-23 22:40:26 -04:00
parent 4e09014daf
commit 31f7bf1994
3 changed files with 83 additions and 58 deletions
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116
src/shared/logs-show.c
View File

@ -95,12 +95,54 @@ static bool shall_print(const char *p, size_t l, OutputFlags flags) {
if (l >= PRINT_THRESHOLD)
return false;
if (!utf8_is_printable_n(p, l))
if (!utf8_is_printable(p, l))
return false;
return true;
}
static void print_multiline(FILE *f, unsigned prefix, unsigned n_columns, int flags, int priority, const char* message, size_t message_len) {
const char *color_on = "", *color_off = "";
const char *pos, *end;
bool continuation = false;
if (flags & OUTPUT_COLOR) {
if (priority <= LOG_ERR) {
color_on = ANSI_HIGHLIGHT_RED_ON;
color_off = ANSI_HIGHLIGHT_OFF;
} else if (priority <= LOG_NOTICE) {
color_on = ANSI_HIGHLIGHT_ON;
color_off = ANSI_HIGHLIGHT_OFF;
}
}
for (pos = message; pos < message + message_len; pos = end + 1) {
int len;
for (end = pos; end < message + message_len && *end != '\n'; end++)
;
len = end - pos;
assert(len >= 0);
if ((flags & OUTPUT_FULL_WIDTH) || (prefix + len + 1 < n_columns))
fprintf(f, "%*s%s%.*s%s\n",
continuation * prefix, "",
color_on, len, pos, color_off);
else if (prefix < n_columns && n_columns - prefix >= 3) {
_cleanup_free_ char *e;
e = ellipsize_mem(pos, len, n_columns - prefix, 90);
if (!e)
fprintf(f, "%s%.*s%s\n", color_on, len, pos, color_off);
else
fprintf(f, "%s%s%s\n", color_on, e, color_off);
} else
fputs("...\n", f);
continuation = true;
}
}
static int output_short(
FILE *f,
sd_journal *j,
@ -115,7 +157,6 @@ static int output_short(
_cleanup_free_ char *hostname = NULL, *identifier = NULL, *comm = NULL, *pid = NULL, *fake_pid = NULL, *message = NULL, *realtime = NULL, *monotonic = NULL, *priority = NULL;
size_t hostname_len = 0, identifier_len = 0, comm_len = 0, pid_len = 0, fake_pid_len = 0, message_len = 0, realtime_len = 0, monotonic_len = 0, priority_len = 0;
int p = LOG_INFO;
const char *color_on = "", *color_off = "";
assert(f);
assert(j);
@ -260,34 +301,13 @@ static int output_short(
n += fake_pid_len + 2;
}
if (flags & OUTPUT_COLOR) {
if (p <= LOG_ERR) {
color_on = ANSI_HIGHLIGHT_RED_ON;
color_off = ANSI_HIGHLIGHT_OFF;
} else if (p <= LOG_NOTICE) {
color_on = ANSI_HIGHLIGHT_ON;
color_off = ANSI_HIGHLIGHT_OFF;
}
}
if (flags & OUTPUT_SHOW_ALL)
fprintf(f, ": %s%.*s%s\n", color_on, (int) message_len, message, color_off);
else if (!utf8_is_printable_n(message, message_len)) {
if (!(flags & OUTPUT_SHOW_ALL) && !utf8_is_printable(message, message_len)) {
char bytes[FORMAT_BYTES_MAX];
fprintf(f, ": [%s blob data]\n", format_bytes(bytes, sizeof(bytes), message_len));
} else if ((flags & OUTPUT_FULL_WIDTH) || (message_len + n + 1 < n_columns))
fprintf(f, ": %s%.*s%s\n", color_on, (int) message_len, message, color_off);
else if (n < n_columns && n_columns - n - 2 >= 3) {
_cleanup_free_ char *e;
e = ellipsize_mem(message, message_len, n_columns - n - 2, 90);
if (!e)
fprintf(f, ": %s%.*s%s\n", color_on, (int) message_len, message, color_off);
else
fprintf(f, ": %s%s%s\n", color_on, e, color_off);
} else
fputs("\n", f);
} else {
fputs(": ", f);
print_multiline(f, n + 2, n_columns, flags, p, message, message_len);
}
if (flags & OUTPUT_CATALOG)
print_catalog(f, j);
@ -331,22 +351,26 @@ static int output_verbose(
cursor);
SD_JOURNAL_FOREACH_DATA(j, data, length) {
if (!shall_print(data, length, flags)) {
const char *c;
const char *c;
int fieldlen;
c = memchr(data, '=', length);
if (!c) {
log_error("Invalid field.");
return -EINVAL;
}
fieldlen = c - (const char*) data;
if ((flags & OUTPUT_SHOW_ALL) || (length < PRINT_THRESHOLD && utf8_is_printable(data, length))) {
fprintf(f, " %.*s=", fieldlen, (const char*)data);
print_multiline(f, 4 + fieldlen + 1, 0, OUTPUT_FULL_WIDTH, 0, c + 1, length - fieldlen - 1);
} else {
char bytes[FORMAT_BYTES_MAX];
c = memchr(data, '=', length);
if (!c) {
log_error("Invalid field.");
return -EINVAL;
}
fprintf(f, "\t%.*s=[%s blob data]\n",
(int) (c - (const char*) data),
(const char*) data,
format_bytes(bytes, sizeof(bytes), length - (c - (const char *) data) - 1));
} else
fprintf(f, "\t%.*s\n", (int) length, (const char*) data);
fprintf(f, " %.*s=[%s blob data]\n",
(int) (c - (const char*) data),
(const char*) data,
format_bytes(bytes, sizeof(bytes), length - (c - (const char *) data) - 1));
}
}
if (flags & OUTPUT_CATALOG)
@ -410,7 +434,7 @@ static int output_export(
memcmp(data, "_BOOT_ID=", 9) == 0)
continue;
if (!utf8_is_printable_n(data, length)) {
if (!utf8_is_printable(data, length)) {
const char *c;
uint64_t le64;
@ -449,7 +473,7 @@ void json_escape(
fputs("null", f);
else if (!utf8_is_printable_n(p, l)) {
else if (!utf8_is_printable(p, l)) {
bool not_first = false;
fputs("[ ", f);
@ -474,7 +498,9 @@ void json_escape(
if (*p == '"' || *p == '\\') {
fputc('\\', f);
fputc(*p, f);
} else if (*p < ' ')
} else if (*p == '\n')
fputs("\\n", f);
else if (*p < ' ')
fprintf(f, "\\u%04x", *p);
else
fputc(*p, f);

21
src/shared/utf8.c
View File

@ -86,11 +86,11 @@ static bool is_unicode_control(uint32_t ch) {
'\t' is in C0 range, but more or less harmless and commonly used.
*/
return (ch < ' ' && ch != '\t') ||
return (ch < ' ' && ch != '\t' && ch != '\n') ||
(0x7F <= ch && ch <= 0x9F);
}
char* utf8_is_printable_n(const char* str, size_t length) {
bool utf8_is_printable(const char* str, size_t length) {
uint32_t val = 0;
uint32_t min = 0;
const uint8_t *p;
@ -113,40 +113,37 @@ char* utf8_is_printable_n(const char* str, size_t length) {
min = (1 << 16);
val = (uint32_t) (*p & 0x07);
} else
goto error;
return false;
p++;
length--;
if (!length || !is_continuation_char(*p))
goto error;
return false;
merge_continuation_char(&val, *p);
TWO_REMAINING:
p++;
length--;
if (!is_continuation_char(*p))
goto error;
return false;
merge_continuation_char(&val, *p);
ONE_REMAINING:
p++;
length--;
if (!is_continuation_char(*p))
goto error;
return false;
merge_continuation_char(&val, *p);
if (val < min)
goto error;
return false;
}
if (is_unicode_control(val))
goto error;
return false;
}
return (char*) str;
error:
return NULL;
return true;
}
static char* utf8_validate(const char *str, char *output) {

4
src/shared/utf8.h
View File

@ -21,12 +21,14 @@
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <stdbool.h>
#include "macro.h"
char *utf8_is_valid(const char *s) _pure_;
char *ascii_is_valid(const char *s) _pure_;
char *utf8_is_printable_n(const char* str, size_t length) _pure_;
bool utf8_is_printable(const char* str, size_t length) _pure_;
char *utf8_filter(const char *s);
char *ascii_filter(const char *s);