am 79ae578e: Merge "liblog: logcat: Add printable format modifier" (3ae69bbe) · Commits · e / os / android_system_core

include/log/logprint.h

+2 −1

Original line number	Diff line number	Diff line
		@@ -36,9 +36,10 @@ typedef enum {
		FORMAT_TIME,
		FORMAT_THREADTIME,
		FORMAT_LONG,
		/* The following two are modifiers to above formats */
		/* The following three are modifiers to above formats */
		FORMAT_MODIFIER_COLOR, /* converts priority to color */
		FORMAT_MODIFIER_TIME_USEC, /* switches from msec to usec time precision */
		FORMAT_MODIFIER_PRINTABLE, /* converts non-printable to printable escapes */
		} AndroidLogPrintFormat;

		typedef struct AndroidLogFormat_t AndroidLogFormat;

liblog/logprint.c

+182 −31

Original line number	Diff line number	Diff line
		@@ -32,6 +32,9 @@
		#include <log/logd.h>
		#include <log/logprint.h>

		/* open coded fragment, prevent circular dependencies */
		#define WEAK static

		typedef struct FilterInfo_t {
		char *mTag;
		android_LogPriority mPri;
		@@ -44,6 +47,7 @@ struct AndroidLogFormat_t {
		AndroidLogPrintFormat format;
		bool colored_output;
		bool usec_time_output;
		bool printable_output;
		};

		/*
		@@ -187,6 +191,7 @@ AndroidLogFormat *android_log_format_new()
		p_ret->format = FORMAT_BRIEF;
		p_ret->colored_output = false;
		p_ret->usec_time_output = false;
		p_ret->printable_output = false;

		return p_ret;
		}
		@@ -212,13 +217,18 @@ void android_log_format_free(AndroidLogFormat *p_format)
		int android_log_setPrintFormat(AndroidLogFormat *p_format,
		AndroidLogPrintFormat format)
		{
		if (format == FORMAT_MODIFIER_COLOR) {
		switch (format) {
		case FORMAT_MODIFIER_COLOR:
		p_format->colored_output = true;
		return 0;
		}
		if (format == FORMAT_MODIFIER_TIME_USEC) {
		case FORMAT_MODIFIER_TIME_USEC:
		p_format->usec_time_output = true;
		return 0;
		case FORMAT_MODIFIER_PRINTABLE:
		p_format->printable_output = true;
		return 0;
		default:
		break;
		}
		p_format->format = format;
		return 1;
		@@ -241,6 +251,7 @@ AndroidLogPrintFormat android_log_formatFromString(const char * formatString)
		else if (strcmp(formatString, "long") == 0) format = FORMAT_LONG;
		else if (strcmp(formatString, "color") == 0) format = FORMAT_MODIFIER_COLOR;
		else if (strcmp(formatString, "usec") == 0) format = FORMAT_MODIFIER_TIME_USEC;
		else if (strcmp(formatString, "printable") == 0) format = FORMAT_MODIFIER_PRINTABLE;
		else format = FORMAT_OFF;

		return format;
		@@ -276,29 +287,35 @@ int android_log_addFilterRule(AndroidLogFormat *p_format,
		}

		if(0 == strncmp("*", filterExpression, tagNameLength)) {
		// This filter expression refers to the global filter
		// The default level for this is DEBUG if the priority
		// is unspecified
		/*
		* This filter expression refers to the global filter
		* The default level for this is DEBUG if the priority
		* is unspecified
		*/
		if (pri == ANDROID_LOG_DEFAULT) {
		pri = ANDROID_LOG_DEBUG;
		}

		p_format->global_pri = pri;
		} else {
		// for filter expressions that don't refer to the global
		// filter, the default is verbose if the priority is unspecified
		/*
		* for filter expressions that don't refer to the global
		* filter, the default is verbose if the priority is unspecified
		*/
		if (pri == ANDROID_LOG_DEFAULT) {
		pri = ANDROID_LOG_VERBOSE;
		}

		char *tagName;

		// Presently HAVE_STRNDUP is never defined, so the second case is always taken
		// Darwin doesn't have strnup, everything else does
		/*
		* Presently HAVE_STRNDUP is never defined, so the second case is always taken
		* Darwin doesn't have strnup, everything else does
		*/
		#ifdef HAVE_STRNDUP
		tagName = strndup(filterExpression, tagNameLength);
		#else
		//a few extra bytes copied...
		/* a few extra bytes copied... */
		tagName = strdup(filterExpression);
		tagName[tagNameLength] = '\0';
		#endif /HAVE_STRNDUP/
		@@ -335,9 +352,9 @@ int android_log_addFilterString(AndroidLogFormat *p_format,
		char *p_ret;
		int err;

		// Yes, I'm using strsep
		/* Yes, I'm using strsep */
		while (NULL != (p_ret = strsep(&p_cur, " \t,"))) {
		// ignore whitespace-only entries
		/* ignore whitespace-only entries */
		if(p_ret[0] != '\0') {
		err = android_log_addFilterRule(p_format, p_ret);

		@@ -381,8 +398,10 @@ int android_log_processLogBuffer(struct logger_entry *buf,
		* When that happens, we must null-terminate the message ourselves.
		*/
		if (buf->len < 3) {
		// An well-formed entry must consist of at least a priority
		// and two null characters
		/*
		* An well-formed entry must consist of at least a priority
		* and two null characters
		*/
		fprintf(stderr, "+++ LOG: entry too small\n");
		return -1;
		}
		@@ -412,7 +431,7 @@ int android_log_processLogBuffer(struct logger_entry *buf,
		return -1;
		}
		if (msgEnd == -1) {
		// incoming message not null-terminated; force it
		/* incoming message not null-terminated; force it */
		msgEnd = buf->len - 1;
		msg[msgEnd] = '\0';
		}
		@@ -473,8 +492,6 @@ static int android_log_printBinaryEvent(const unsigned char** pEventData,
		type = *eventData++;
		eventDataLen--;

		//fprintf(stderr, "--- type=%d (rem len=%d)\n", type, eventDataLen);

		switch (type) {
		case EVENT_TYPE_INT:
		/* 32-bit signed int */
		@@ -735,6 +752,122 @@ int android_log_processBinaryLogBuffer(struct logger_entry *buf,
		return 0;
		}

		/*
		* One utf8 character at a time
		*
		* Returns the length of the utf8 character in the buffer,
		* or -1 if illegal or truncated
		*
		* Open coded from libutils/Unicode.cpp, borrowed from utf8_length(),
		* can not remove from here because of library circular dependencies.
		* Expect one-day utf8_character_length with the same signature could
		* _also_ be part of libutils/Unicode.cpp if its usefullness needs to
		* propagate globally.
		*/
		WEAK ssize_t utf8_character_length(const char *src, size_t len)
		{
		const char *cur = src;
		const char first_char = *cur++;
		static const uint32_t kUnicodeMaxCodepoint = 0x0010FFFF;
		int32_t mask, to_ignore_mask;
		size_t num_to_read;
		uint32_t utf32;

		if ((first_char & 0x80) == 0) { /* ASCII */
		return 1;
		}

		/*
		* (UTF-8's character must not be like 10xxxxxx,
		* but 110xxxxx, 1110xxxx, ... or 1111110x)
		*/
		if ((first_char & 0x40) == 0) {
		return -1;
		}

		for (utf32 = 1, num_to_read = 1, mask = 0x40, to_ignore_mask = 0x80;
		num_to_read < 5 && (first_char & mask);
		num_to_read++, to_ignore_mask \|= mask, mask >>= 1) {
		if (num_to_read > len) {
		return -1;
		}
		if ((cur & 0xC0) != 0x80) { / can not be 10xxxxxx? */
		return -1;
		}
		utf32 = (utf32 << 6) + (*cur++ & 0b00111111);
		}
		/* "first_char" must be (110xxxxx - 11110xxx) */
		if (num_to_read >= 5) {
		return -1;
		}
		to_ignore_mask \|= mask;
		utf32 \|= ((~to_ignore_mask) & first_char) << (6 * (num_to_read - 1));
		if (utf32 > kUnicodeMaxCodepoint) {
		return -1;
		}
		return num_to_read;
		}

		/*
		* Convert to printable from message to p buffer, return string length. If p is
		* NULL, do not copy, but still return the expected string length.
		*/
		static size_t convertPrintable(char p, const char message, size_t messageLen)
		{
		char *begin = p;
		bool print = p != NULL;

		while (messageLen) {
		char buf[6];
		ssize_t len = sizeof(buf) - 1;
		if ((size_t)len > messageLen) {
		len = messageLen;
		}
		len = utf8_character_length(message, len);

		if (len < 0) {
		snprintf(buf, sizeof(buf),
		((messageLen > 1) && isdigit(message[1]))
		? "\\%03o"
		: "\\%o",
		*message & 0377);
		len = 1;
		} else {
		buf[0] = '\0';
		if (len == 1) {
		if (*message == '\a') {
		strcpy(buf, "\\a");
		} else if (*message == '\b') {
		strcpy(buf, "\\b");
		} else if (*message == '\t') {
		strcpy(buf, "\\t");
		} else if (*message == '\v') {
		strcpy(buf, "\\v");
		} else if (*message == '\f') {
		strcpy(buf, "\\f");
		} else if (*message == '\r') {
		strcpy(buf, "\\r");
		} else if (*message == '\\') {
		strcpy(buf, "\\\\");
		} else if ((message < ' ') \|\| (message & 0x80)) {
		snprintf(buf, sizeof(buf), "\\%o", *message & 0377);
		}
		}
		if (!buf[0]) {
		strncpy(buf, message, len);
		buf[len] = '\0';
		}
		}
		if (print) {
		strcpy(p, buf);
		}
		p += strlen(buf);
		message += len;
		messageLen -= len;
		}
		return p - begin;
		}

		/**
		* Formats a log message into a buffer
		*
		@@ -778,7 +911,7 @@ char *android_log_formatLogLine (
		#else
		ptm = localtime(&(entry->tv_sec));
		#endif
		//strftime(timeBuf, sizeof(timeBuf), "%Y-%m-%d %H:%M:%S", ptm);
		/* strftime(timeBuf, sizeof(timeBuf), "%Y-%m-%d %H:%M:%S", ptm); */
		strftime(timeBuf, sizeof(timeBuf), "%m-%d %H:%M:%S", ptm);
		len = strlen(timeBuf);
		if (p_format->usec_time_output) {
		@@ -873,24 +1006,34 @@ char *android_log_formatLogLine (
		const char *pm;

		if (prefixSuffixIsHeaderFooter) {
		// we're just wrapping message with a header/footer
		/* we're just wrapping message with a header/footer */
		numLines = 1;
		} else {
		pm = entry->message;
		numLines = 0;

		// The line-end finding here must match the line-end finding
		// in for ( ... numLines...) loop below
		/*
		* The line-end finding here must match the line-end finding
		* in for ( ... numLines...) loop below
		*/
		while (pm < (entry->message + entry->messageLen)) {
		if (*pm++ == '\n') numLines++;
		}
		// plus one line for anything not newline-terminated at the end
		/* plus one line for anything not newline-terminated at the end */
		if (pm > entry->message && *(pm-1) != '\n') numLines++;
		}

		// this is an upper bound--newlines in message may be counted
		// extraneously
		bufferSize = (numLines * (prefixLen + suffixLen)) + entry->messageLen + 1;
		/*
		* this is an upper bound--newlines in message may be counted
		* extraneously
		*/
		bufferSize = (numLines * (prefixLen + suffixLen)) + 1;
		if (p_format->printable_output) {
		/* Calculate extra length to convert non-printable to printable */
		bufferSize += convertPrintable(NULL, entry->message, entry->messageLen);
		} else {
		bufferSize += entry->messageLen;
		}

		if (defaultBufferSize >= bufferSize) {
		ret = defaultBuffer;
		@@ -910,8 +1053,12 @@ char *android_log_formatLogLine (
		if (prefixSuffixIsHeaderFooter) {
		strcat(p, prefixBuf);
		p += prefixLen;
		if (p_format->printable_output) {
		p += convertPrintable(p, entry->message, entry->messageLen);
		} else {
		strncat(p, entry->message, entry->messageLen);
		p += entry->messageLen;
		}
		strcat(p, suffixBuf);
		p += suffixLen;
		} else {
		@@ -920,15 +1067,19 @@ char *android_log_formatLogLine (
		size_t lineLen;
		lineStart = pm;

		// Find the next end-of-line in message
		/* Find the next end-of-line in message */
		while (pm < (entry->message + entry->messageLen)
		&& *pm != '\n') pm++;
		lineLen = pm - lineStart;

		strcat(p, prefixBuf);
		p += prefixLen;
		if (p_format->printable_output) {
		p += convertPrintable(p, lineStart, lineLen);
		} else {
		strncat(p, lineStart, lineLen);
		p += lineLen;
		}
		strcat(p, suffixBuf);
		p += suffixLen;

logcat/logcat.cpp

+2 −1

Original line number	Diff line number	Diff line
		@@ -253,7 +253,8 @@ static void show_help(const char *cmd)
		" -r <kbytes> Rotate log every kbytes. Requires -f\n"
		" -n <count> Sets max number of rotated logs to <count>, default 4\n"
		" -v <format> Sets the log print format, where <format> is:\n\n"
		" brief color long process raw tag thread threadtime time usec\n\n"
		" brief color long printable process raw tag thread\n"
		" threadtime time usec\n\n"
		" -D print dividers between each log buffer\n"
		" -c clear (flush) the entire log and exit\n"
		" -d dump the log and then exit (don't block)\n"