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Use standard colors in logcat color output 

Previously, colors were specified from the 216 additional colors, which
typically specify an exact RGB color value. Instead, use escape codes
for standard colors (default foreground, red, green, yellow, etc.),
which are commonly adjusted by terminal emulators user preferences.

Bug: 159503129
Test: adb logcat --format color
Test: atest liblog
Change-Id: I0b10a70a76a29d896d04d6c49e716b09cb09b19a
This commit is contained in:
Peter Kalauskas 2020-06-18 16:55:24 -07:00
parent a5032be8e0
commit 8b477b6d10
2 changed files with 18 additions and 15 deletions
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29
liblog/logprint.cpp
View File

@ -78,18 +78,21 @@ struct AndroidLogFormat_t {
static bool descriptive_output = false;
/*
* gnome-terminal color tags
* See http://misc.flogisoft.com/bash/tip_colors_and_formatting
* for ideas on how to set the forground color of the text for xterm.
* The color manipulation character stream is defined as:
* ESC [ 3 8 ; 5 ; <color#> m
* 8-bit color tags. See ECMA-48 Set Graphics Rendition in
* [console_codes(4)](https://man7.org/linux/man-pages/man4/console_codes.4.html).
*
* The text manipulation character stream is defined as:
* ESC [ <parameter #> m
*
* We use "set <color> foreground" escape sequences instead of
* "256/24-bit foreground color". This allows colors to render
* according to user preferences in terminal emulator settings
*/
#define ANDROID_COLOR_BLUE 75
#define ANDROID_COLOR_DEFAULT 231
#define ANDROID_COLOR_GREEN 40
#define ANDROID_COLOR_ORANGE 166
#define ANDROID_COLOR_RED 196
#define ANDROID_COLOR_YELLOW 226
#define ANDROID_COLOR_BLUE 34
#define ANDROID_COLOR_DEFAULT 39
#define ANDROID_COLOR_GREEN 32
#define ANDROID_COLOR_RED 31
#define ANDROID_COLOR_YELLOW 33
static FilterInfo* filterinfo_new(const char* tag, android_LogPriority pri) {
FilterInfo* p_ret;
@ -165,7 +168,7 @@ static int colorFromPri(android_LogPriority pri) {
case ANDROID_LOG_VERBOSE: return ANDROID_COLOR_DEFAULT;
case ANDROID_LOG_DEBUG: return ANDROID_COLOR_BLUE;
case ANDROID_LOG_INFO: return ANDROID_COLOR_GREEN;
case ANDROID_LOG_WARN: return ANDROID_COLOR_ORANGE;
case ANDROID_LOG_WARN: return ANDROID_COLOR_YELLOW;
case ANDROID_LOG_ERROR: return ANDROID_COLOR_RED;
case ANDROID_LOG_FATAL: return ANDROID_COLOR_RED;
case ANDROID_LOG_SILENT: return ANDROID_COLOR_DEFAULT;
@ -1499,7 +1502,7 @@ char* android_log_formatLogLine(AndroidLogFormat* p_format, char* defaultBuffer,
*/
if (p_format->colored_output) {
prefixLen =
snprintf(prefixBuf, sizeof(prefixBuf), "\x1B[38;5;%dm", colorFromPri(entry->priority));
snprintf(prefixBuf, sizeof(prefixBuf), "\x1B[%dm", colorFromPri(entry->priority));
prefixLen = MIN(prefixLen, sizeof(prefixBuf));
const char suffixContents[] = "\x1B[0m";

4
logcat/logcat.cpp
View File

@ -402,8 +402,8 @@ static void show_format_help() {
" time — Display the date, invocation time, priority/tag, and PID of the\n"
" process issuing the message.\n"
"\nAdverb modifiers can be used in combination:\n"
" color — Display in highlighted color to match priority. i.e. \x1B[38;5;231mVERBOSE\n"
" \x1B[38;5;75mDEBUG \x1B[38;5;40mINFO \x1B[38;5;166mWARNING \x1B[38;5;196mERROR FATAL\x1B[0m\n"
" color — Display in highlighted color to match priority. i.e. \x1B[39mVERBOSE\n"
" \x1B[34mDEBUG \x1B[32mINFO \x1B[33mWARNING \x1B[31mERROR FATAL\x1B[0m\n"
" descriptive — events logs only, descriptions from event-log-tags database.\n"
" epoch — Display time as seconds since Jan 1 1970.\n"
" monotonic — Display time as cpu seconds since last boot.\n"