1 /* Copyright JS Foundation and other contributors, http://js.foundation
2 *
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include <stdarg.h>
17 #include <stdlib.h>
18 #include <string.h>
19
20 #include "jerryscript-port.h"
21 #include "jerryscript-port-default.h"
22 #include "jerryscript-debugger.h"
23
24 #ifndef DISABLE_EXTRA_API
25
26 /**
27 * Actual log level
28 */
29 static jerry_log_level_t jerry_port_default_log_level = JERRY_LOG_LEVEL_ERROR;
30
31 #define JERRY_PORT_DEFAULT_LOG_LEVEL jerry_port_default_log_level
32
33 /**
34 * Get the log level
35 *
36 * @return current log level
37 *
38 * Note:
39 * This function is only available if the port implementation library is
40 * compiled without the DISABLE_EXTRA_API macro.
41 */
42 jerry_log_level_t
jerry_port_default_get_log_level(void)43 jerry_port_default_get_log_level (void)
44 {
45 return jerry_port_default_log_level;
46 } /* jerry_port_default_get_log_level */
47
48 /**
49 * Set the log level
50 *
51 * Note:
52 * This function is only available if the port implementation library is
53 * compiled without the DISABLE_EXTRA_API macro.
54 */
55 void
jerry_port_default_set_log_level(jerry_log_level_t level)56 jerry_port_default_set_log_level (jerry_log_level_t level) /**< log level */
57 {
58 jerry_port_default_log_level = level;
59 } /* jerry_port_default_set_log_level */
60
61 #else /* DISABLE_EXTRA_API */
62 #define JERRY_PORT_DEFAULT_LOG_LEVEL JERRY_LOG_LEVEL_ERROR
63 #endif /* !DISABLE_EXTRA_API */
64
65 /**
66 * Default implementation of jerry_port_log. Prints log message to the standard
67 * error with 'vfprintf' if message log level is less than or equal to the
68 * current log level.
69 *
70 * If debugger support is enabled, printing happens first to an in-memory buffer,
71 * which is then sent both to the standard error and to the debugger client.
72 *
73 * Note:
74 * Changing the log level from JERRY_LOG_LEVEL_ERROR is only possible if
75 * the port implementation library is compiled without the
76 * DISABLE_EXTRA_API macro.
77 */
78 void
jerry_port_log(jerry_log_level_t level,const char * format,...)79 jerry_port_log (jerry_log_level_t level, /**< message log level */
80 const char *format, /**< format string */
81 ...) /**< parameters */
82 {
83 if (level <= JERRY_PORT_DEFAULT_LOG_LEVEL)
84 {
85 va_list args;
86 va_start (args, format);
87 #if defined (JERRY_DEBUGGER) && (JERRY_DEBUGGER == 1)
88 if (jerry_debugger_is_connected())
89 {
90 int length = vsnprintf (NULL, 0, format, args);
91 va_end (args);
92 va_start (args, format);
93
94 JERRY_VLA (char, buffer, length + 1);
95 vsnprintf (buffer, (size_t) length + 1, format, args);
96
97 fprintf (stderr, "[JERRYSCRIPT]%s", buffer);
98 jerry_debugger_send_log (level, (jerry_char_t *) buffer, (jerry_size_t) length);
99 }
100 else
101 {
102 vfprintf (stderr, format, args);
103 }
104 #else /* If jerry-debugger isn't defined, libc is turned on */
105 vfprintf (stderr, format, args);
106 #endif /* defined (JERRY_DEBUGGER) && (JERRY_DEBUGGER == 1) */
107 va_end (args);
108 }
109 } /* jerry_port_log */
110
111 #if defined (JERRY_DEBUGGER) && (JERRY_DEBUGGER == 1)
112
113 #define DEBUG_BUFFER_SIZE (256)
114 static char debug_buffer[DEBUG_BUFFER_SIZE];
115 static int debug_buffer_index = 0;
116
117 #endif /* defined (JERRY_DEBUGGER) && (JERRY_DEBUGGER == 1) */
118
119 /**
120 * Default implementation of jerry_port_print_char. Uses 'putchar' to
121 * print a single character to standard output.
122 */
123 void
jerry_port_print_char(char c)124 jerry_port_print_char (char c) /**< the character to print */
125 {
126 putchar (c);
127
128 #if defined (JERRY_DEBUGGER) && (JERRY_DEBUGGER == 1)
129 debug_buffer[debug_buffer_index++] = c;
130
131 if ((debug_buffer_index == DEBUG_BUFFER_SIZE) || (c == '\n'))
132 {
133 jerry_debugger_send_output ((jerry_char_t *) debug_buffer, (jerry_size_t) debug_buffer_index);
134 debug_buffer_index = 0;
135 }
136 #endif /* defined (JERRY_DEBUGGER) && (JERRY_DEBUGGER == 1) */
137 } /* jerry_port_print_char */
138