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Merge pull request #278 from yuriks/log-colors 

Restore the original console color after logging a message.
This commit is contained in:
bunnei 2014-12-14 01:59:18 -05:00
parent 9ce11b2d92 ac87c3b0d0
commit 8eac8ee3f3
2 changed files with 25 additions and 13 deletions
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36
src/common/logging/text_formatter.cpp
View File

@ -54,12 +54,22 @@ void FormatLogMessage(const Entry& entry, char* out_text, size_t text_len) {
TrimSourcePath(entry.location.c_str()), entry.message.c_str());
}
static void ChangeConsoleColor(Level level) {
void PrintMessage(const Entry& entry) {
std::array<char, 4 * 1024> format_buffer;
FormatLogMessage(entry, format_buffer.data(), format_buffer.size());
fputs(format_buffer.data(), stderr);
fputc('\n', stderr);
}
void PrintColoredMessage(const Entry& entry) {
#ifdef _WIN32
static HANDLE console_handle = GetStdHandle(STD_ERROR_HANDLE);
CONSOLE_SCREEN_BUFFER_INFO original_info = {0};
GetConsoleScreenBufferInfo(console_handle, &original_info);
WORD color = 0;
switch (level) {
switch (entry.log_level) {
case Level::Trace: // Grey
color = FOREGROUND_INTENSITY; break;
case Level::Debug: // Cyan
@ -76,9 +86,9 @@ static void ChangeConsoleColor(Level level) {
SetConsoleTextAttribute(console_handle, color);
#else
#define ESC "\x1b"
# define ESC "\x1b"
const char* color = "";
switch (level) {
switch (entry.log_level) {
case Level::Trace: // Grey
color = ESC "[1;30m"; break;
case Level::Debug: // Cyan
@ -92,18 +102,18 @@ static void ChangeConsoleColor(Level level) {
case Level::Critical: // Bright magenta
color = ESC "[1;35m"; break;
}
#undef ESC
fputs(color, stderr);
#endif
}
void PrintMessage(const Entry& entry) {
ChangeConsoleColor(entry.log_level);
std::array<char, 4 * 1024> format_buffer;
FormatLogMessage(entry, format_buffer.data(), format_buffer.size());
fputs(format_buffer.data(), stderr);
fputc('\n', stderr);
PrintMessage(entry);
#ifdef _WIN32
SetConsoleTextAttribute(console_handle, original_info.wAttributes);
#else
fputs(ESC "[0m", stderr);
# undef ESC
#endif
}
void TextLoggingLoop(std::shared_ptr<Logger> logger, const Filter* filter) {
@ -117,7 +127,7 @@ void TextLoggingLoop(std::shared_ptr<Logger> logger, const Filter* filter) {
for (size_t i = 0; i < num_entries; ++i) {
const Entry& entry = entry_buffer[i];
if (filter->CheckMessage(entry.log_class, entry.log_level)) {
PrintMessage(entry);
PrintColoredMessage(entry);
}
}
}

2
src/common/logging/text_formatter.h
View File

@ -29,6 +29,8 @@ const char* TrimSourcePath(const char* path, const char* root = "src");
void FormatLogMessage(const Entry& entry, char* out_text, size_t text_len);
/// Formats and prints a log entry to stderr.
void PrintMessage(const Entry& entry);
/// Prints the same message as `PrintMessage`, but colored acoording to the severity level.
void PrintColoredMessage(const Entry& entry);
/**
* Logging loop that repeatedly reads messages from the provided logger and prints them to the