C++ (Cpp) buffer_append_long_hex Examples

Example #1

File: log.c Project: ATCP/mtcp

int log_error_write(server *srv, const char *filename, unsigned int line, const char *fmt, ...) {
	va_list ap;

	switch(srv->errorlog_mode) {
	case ERRORLOG_PIPE:
	case ERRORLOG_FILE:
	case ERRORLOG_FD:
		if (-1 == srv->errorlog_fd) return 0;
		/* cache the generated timestamp */
		if (srv->cur_ts != srv->last_generated_debug_ts) {
			buffer_prepare_copy(srv->ts_debug_str, 255);
			strftime(srv->ts_debug_str->ptr, srv->ts_debug_str->size - 1, "%Y-%m-%d %H:%M:%S", localtime(&(srv->cur_ts)));
			srv->ts_debug_str->used = strlen(srv->ts_debug_str->ptr) + 1;

			srv->last_generated_debug_ts = srv->cur_ts;
		}

		buffer_copy_string_buffer(srv->errorlog_buf, srv->ts_debug_str);
		buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN(": ("));
		break;
	case ERRORLOG_SYSLOG:
		/* syslog is generating its own timestamps */
		buffer_copy_string_len(srv->errorlog_buf, CONST_STR_LEN("("));
		break;
	}

	buffer_append_string(srv->errorlog_buf, filename);
	buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN("."));
	buffer_append_long(srv->errorlog_buf, line);
	buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN(") "));


	for(va_start(ap, fmt); *fmt; fmt++) {
		int d;
		char *s;
		buffer *b;
		off_t o;

		switch(*fmt) {
		case 's':           /* string */
			s = va_arg(ap, char *);
			buffer_append_string(srv->errorlog_buf, s);
			buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN(" "));
			break;
		case 'b':           /* buffer */
			b = va_arg(ap, buffer *);
			buffer_append_string_buffer(srv->errorlog_buf, b);
			buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN(" "));
			break;
		case 'd':           /* int */
			d = va_arg(ap, int);
			buffer_append_long(srv->errorlog_buf, d);
			buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN(" "));
			break;
		case 'o':           /* off_t */
			o = va_arg(ap, off_t);
			buffer_append_off_t(srv->errorlog_buf, o);
			buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN(" "));
			break;
		case 'x':           /* int (hex) */
			d = va_arg(ap, int);
			buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN("0x"));
			buffer_append_long_hex(srv->errorlog_buf, d);
			buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN(" "));
			break;
		case 'S':           /* string */
			s = va_arg(ap, char *);
			buffer_append_string(srv->errorlog_buf, s);
			break;
		case 'B':           /* buffer */
			b = va_arg(ap, buffer *);
			buffer_append_string_buffer(srv->errorlog_buf, b);
			break;
		case 'D':           /* int */
			d = va_arg(ap, int);
			buffer_append_long(srv->errorlog_buf, d);
			break;
		case 'O':           /* off_t */
			o = va_arg(ap, off_t);
			buffer_append_off_t(srv->errorlog_buf, o);
			break;
		case 'X':           /* int (hex) */
			d = va_arg(ap, int);
			buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN("0x"));
			buffer_append_long_hex(srv->errorlog_buf, d);
			break;
		case '(':
		case ')':
		case '<':
		case '>':
		case ',':
		case ' ':
			buffer_append_string_len(srv->errorlog_buf, fmt, 1);
			break;
		}
	}
	va_end(ap);

	switch(srv->errorlog_mode) {
	case ERRORLOG_PIPE:
	case ERRORLOG_FILE:
	case ERRORLOG_FD:
		buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN("\n"));
		write(srv->errorlog_fd, srv->errorlog_buf->ptr, srv->errorlog_buf->used - 1);
		break;
	case ERRORLOG_SYSLOG:
		syslog(LOG_ERR, "%s", srv->errorlog_buf->ptr);
		break;
	}

	return 0;
}

Example #2

File: log.c Project: kernelhcy/swiftd

/**
 * 输出日志.
 * 日志的格式：
 * 		2009-11-25 22:31:25: (filename.line) information
 *
 * 	参数fmt的说明如下：
 *  's':字符串   'b':buffer   'd':int   'o':off_t   'x':int的十六进制
 *  上面的几个参数，在输出相应的值后都追加一个空格' '。
 *  如果参数为大写，则不追加空格。
 *
 */
int log_error_write(server * srv, const char *filename, unsigned int line,
                    const char *fmt, ...)
{
    pthread_mutex_lock(&srv -> log_lock);
    va_list ap;

    switch (srv->errorlog_mode)
    {
    case ERRORLOG_FILE:
    case ERRORLOG_STDERR:
        /*
         * 日志文件和标准错误输出要设定日志的时间。
         */
        if (srv->cur_ts != srv->last_generated_debug_ts)
        {
            buffer_prepare_copy(srv->ts_debug_str, 1024);
            strftime(srv->ts_debug_str->ptr, srv->ts_debug_str->size - 1,
                     "%Y-%m-%d %H:%M:%S", localtime(&(srv->cur_ts)));
            srv->ts_debug_str->used = strlen(srv->ts_debug_str->ptr) + 1;

            srv->last_generated_debug_ts = srv->cur_ts;
        }

        buffer_copy_string_buffer(srv->errorlog_buf, srv->ts_debug_str);
        buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN(": ("));
        break;
    case ERRORLOG_SYSLOG:
        /*
         * syslog自己产生时间
         */
        buffer_copy_string_len(srv->errorlog_buf, CONST_STR_LEN("("));
        break;
    }

    buffer_append_string(srv->errorlog_buf, filename);
    buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN("."));
    buffer_append_long(srv->errorlog_buf, line);
    buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN(") "));

    //根据字符串fmt来遍历可变参数。
    for (va_start(ap, fmt); *fmt; fmt++)
    {
        int d;
        char *s;
        buffer *b;
        off_t o;

        switch (*fmt)
        {
        case 's':				/* string */
            s = va_arg(ap, char *);
            buffer_append_string(srv->errorlog_buf, s);
            buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN(" "));
            break;
        case 'b':				/* buffer */
            b = va_arg(ap, buffer *);
            buffer_append_string_buffer(srv->errorlog_buf, b);
            buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN(" "));
            break;
        case 'd':				/* int */
            d = va_arg(ap, int);
            buffer_append_long(srv->errorlog_buf, d);
            buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN(" "));
            break;
        case 'o':				/* off_t */
            o = va_arg(ap, off_t);
            buffer_append_off_t(srv->errorlog_buf, o);
            buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN(" "));
            break;
        case 'x':				/* int (hex) */
            d = va_arg(ap, int);
            buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN("0x"));
            buffer_append_long_hex(srv->errorlog_buf, d);
            buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN(" "));
            break;
        case 'S':				/* string */
            s = va_arg(ap, char *);
            buffer_append_string(srv->errorlog_buf, s);
            break;
        case 'B':				/* buffer */
            b = va_arg(ap, buffer *);
            buffer_append_string_buffer(srv->errorlog_buf, b);
            break;
        case 'D':				/* int */
            d = va_arg(ap, int);
            buffer_append_long(srv->errorlog_buf, d);
            break;
        case 'O':				/* off_t */
            o = va_arg(ap, off_t);
            buffer_append_off_t(srv->errorlog_buf, o);
            break;
        case 'X':				/* int (hex) */
            d = va_arg(ap, int);
            buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN("0x"));
            buffer_append_long_hex(srv->errorlog_buf, d);
            break;
        case '(':
        case ')':
        case '<':
        case '>':
        case ',':
        case ' ':
            buffer_append_string_len(srv->errorlog_buf, fmt, 1);
            break;
        }
    }
    va_end(ap);

    switch (srv->errorlog_mode)
    {
    case ERRORLOG_FILE:
        buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN("\n"));
        write(srv->errorlog_fd, srv->errorlog_buf->ptr,
              srv->errorlog_buf->used - 1);
        break;
    case ERRORLOG_STDERR:
        buffer_append_string_len(srv->errorlog_buf, CONST_STR_LEN("\n"));
        write(STDERR_FILENO, srv->errorlog_buf->ptr,
              srv->errorlog_buf->used - 1);
        break;
    case ERRORLOG_SYSLOG:
        syslog(LOG_ERR, "%s", srv->errorlog_buf->ptr);
        break;
    }

    pthread_mutex_unlock(&srv -> log_lock);

    return 0;
}

Example #3

File: log.c Project: b3rnik/dsl-n55u-bender

/* lowercase: append space, uppercase: don't */
static void log_buffer_append_printf(buffer *out, const char *fmt, va_list ap) {
    for(; *fmt; fmt++) {
        int d;
        char *s;
        buffer *b;
        off_t o;

        switch(*fmt) {
        case 's':           /* string */
            s = va_arg(ap, char *);
            buffer_append_string(out, s);
            buffer_append_string_len(out, CONST_STR_LEN(" "));
            break;
        case 'b':           /* buffer */
            b = va_arg(ap, buffer *);
            buffer_append_string_buffer(out, b);
            buffer_append_string_len(out, CONST_STR_LEN(" "));
            break;
        case 'd':           /* int */
            d = va_arg(ap, int);
            buffer_append_long(out, d);
            buffer_append_string_len(out, CONST_STR_LEN(" "));
            break;
        case 'o':           /* off_t */
            o = va_arg(ap, off_t);
            buffer_append_off_t(out, o);
            buffer_append_string_len(out, CONST_STR_LEN(" "));
            break;
        case 'x':           /* int (hex) */
            d = va_arg(ap, int);
            buffer_append_string_len(out, CONST_STR_LEN("0x"));
            buffer_append_long_hex(out, d);
            buffer_append_string_len(out, CONST_STR_LEN(" "));
            break;
        case 'S':           /* string */
            s = va_arg(ap, char *);
            buffer_append_string(out, s);
            break;
        case 'B':           /* buffer */
            b = va_arg(ap, buffer *);
            buffer_append_string_buffer(out, b);
            break;
        case 'D':           /* int */
            d = va_arg(ap, int);
            buffer_append_long(out, d);
            break;
        case 'O':           /* off_t */
            o = va_arg(ap, off_t);
            buffer_append_off_t(out, o);
            break;
        case 'X':           /* int (hex) */
            d = va_arg(ap, int);
            buffer_append_string_len(out, CONST_STR_LEN("0x"));
            buffer_append_long_hex(out, d);
            break;
        case '(':
        case ')':
        case '<':
        case '>':
        case ',':
        case ' ':
            buffer_append_string_len(out, fmt, 1);
            break;
        }
    }
}