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-rw-r--r--src/shared/logs-show.c77
1 files changed, 56 insertions, 21 deletions
diff --git a/src/shared/logs-show.c b/src/shared/logs-show.c
index 2270c3b030..af738a313e 100644
--- a/src/shared/logs-show.c
+++ b/src/shared/logs-show.c
@@ -32,7 +32,11 @@
#include "hashmap.h"
#include "journal-internal.h"
-#define PRINT_THRESHOLD 128
+/* up to three lines (each up to 100 characters),
+ or 300 characters, whichever is less */
+#define PRINT_LINE_THRESHOLD 3
+#define PRINT_CHAR_THRESHOLD 300
+
#define JSON_THRESHOLD 4096
static int print_catalog(FILE *f, sd_journal *j) {
@@ -92,7 +96,7 @@ static bool shall_print(const char *p, size_t l, OutputFlags flags) {
if (flags & OUTPUT_SHOW_ALL)
return true;
- if (l >= PRINT_THRESHOLD)
+ if (l >= PRINT_CHAR_THRESHOLD)
return false;
if (!utf8_is_printable(p, l))
@@ -104,8 +108,8 @@ static bool shall_print(const char *p, size_t l, OutputFlags flags) {
static bool print_multiline(FILE *f, unsigned prefix, unsigned n_columns, OutputMode flags, int priority, const char* message, size_t message_len) {
const char *color_on = "", *color_off = "";
const char *pos, *end;
- bool continuation = false;
bool ellipsized = false;
+ int line = 0;
if (flags & OUTPUT_COLOR) {
if (priority <= LOG_ERR) {
@@ -117,37 +121,61 @@ static bool print_multiline(FILE *f, unsigned prefix, unsigned n_columns, Output
}
}
- for (pos = message; pos < message + message_len; pos = end + 1) {
+ for (pos = message;
+ pos < message + message_len;
+ pos = end + 1, line++) {
+ bool continuation = line > 0;
+ bool tail_line;
int len;
for (end = pos; end < message + message_len && *end != '\n'; end++)
;
len = end - pos;
assert(len >= 0);
- if (flags & (OUTPUT_FULL_WIDTH | OUTPUT_SHOW_ALL) || prefix + len + 1 < n_columns)
+ /* We need to figure out when we are showing the last line, and
+ * will skip subsequent lines. In that case, we will put the dots
+ * at the end of the line, instead of putting dots in the middle
+ * or not at all.
+ */
+ tail_line =
+ line + 1 == PRINT_LINE_THRESHOLD ||
+ end + 1 >= message + message_len;
+
+ if (flags & (OUTPUT_FULL_WIDTH | OUTPUT_SHOW_ALL) ||
+ (prefix + len + 1 < n_columns && !tail_line)) {
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;
+ continue;
+ }
- ellipsized = true;
- e = ellipsize_mem(pos, len, n_columns - prefix, 90);
+ /* Beyond this point, ellipsization will happen. */
+ ellipsized = true;
- if (!e)
- fprintf(f, "%*s%s%.*s%s\n",
+ if (prefix < n_columns && n_columns - prefix >= 3) {
+ if (n_columns - prefix > (unsigned) len + 3)
+ fprintf(f, "%*s%s%.*s...%s\n",
continuation * prefix, "",
color_on, len, pos, color_off);
- else
- fprintf(f, "%*s%s%s%s\n",
- continuation * prefix, "",
- color_on, e, color_off);
- } else {
- ellipsized = true;
+ else {
+ _cleanup_free_ char *e;
+
+ e = ellipsize_mem(pos, len, n_columns - prefix,
+ tail_line ? 100 : 90);
+ if (!e)
+ fprintf(f, "%*s%s%.*s%s\n",
+ continuation * prefix, "",
+ color_on, len, pos, color_off);
+ else
+ fprintf(f, "%*s%s%s%s\n",
+ continuation * prefix, "",
+ color_on, e, color_off);
+ }
+ } else
fputs("...\n", f);
- }
- continuation = true;
+ if (tail_line)
+ break;
}
return ellipsized;
@@ -172,7 +200,13 @@ static int output_short(
assert(f);
assert(j);
- sd_journal_set_data_threshold(j, flags & (OUTPUT_SHOW_ALL|OUTPUT_FULL_WIDTH) ? 0 : PRINT_THRESHOLD);
+ /* Set the threshold to one bigger than the actual print
+ * treshold, so that if the line is actually longer than what
+ * we're willing to print, ellipsization will occur. This way
+ * we won't output a misleading line without any indication of
+ * truncation.
+ */
+ sd_journal_set_data_threshold(j, flags & (OUTPUT_SHOW_ALL|OUTPUT_FULL_WIDTH) ? 0 : PRINT_CHAR_THRESHOLD + 1);
JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) {
@@ -389,7 +423,8 @@ static int output_verbose(
}
if (flags & OUTPUT_SHOW_ALL ||
- (((length < PRINT_THRESHOLD) || flags & OUTPUT_FULL_WIDTH) && utf8_is_printable(data, length))) {
+ (((length < PRINT_CHAR_THRESHOLD) || flags & OUTPUT_FULL_WIDTH)
+ && utf8_is_printable(data, length))) {
fprintf(f, " %s%.*s=", on, fieldlen, (const char*)data);
print_multiline(f, 4 + fieldlen + 1, 0, OUTPUT_FULL_WIDTH, 0, c + 1, length - fieldlen - 1);
fputs(off, f);