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1 #ifndef LOGGER_H_
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2 #define LOGGER_H_
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3
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4 #include <stdio.h>
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5 #include <stdarg.h>
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6
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7 enum {
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8 LOG_INFO = 1,
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9 LOG_WARNING = 2,
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10 LOG_ERROR = 4,
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11 LOG_DEBUG = 8
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12 };
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13
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14 #ifdef __cplusplus
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15 extern "C" {
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16 #endif
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17
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18 /* Clear log outputs. Initially info/debug messages go to stdout, and
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19 * warning/error messages to stderr.
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20 */
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21 void log_clear_targets(void);
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22
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23 /* set logging outputs for any combination of message types.
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24 * type_mask expects a bitmask.
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25 */
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26 int log_add_stream(unsigned int type_mask, FILE *fp);
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27 int log_add_file(unsigned int type_mask, const char *fname);
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28 int log_add_func(unsigned int type_mask, void (*func)(const char*, void*), void *cls);
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29
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30 void log_msg(unsigned int type, const char *fmt, ...);
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31 /* log_msg helpers */
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32 void log_info(const char *fmt, ...);
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33 void log_warning(const char *fmt, ...);
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34 void log_error(const char *fmt, ...);
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35 void log_debug(const char *fmt, ...);
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36
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37 void log_va_msg(unsigned int type, const char *fmt, va_list va);
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38 /* log_va_msg helpers */
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39 void log_va_info(const char *fmt, va_list ap);
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40 void log_va_warning(const char *fmt, va_list ap);
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41 void log_va_error(const char *fmt, va_list ap);
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42 void log_va_debug(const char *fmt, va_list ap);
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43
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44 /* Intercept stdout/stderr and handle them through the logger. stdout as an
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45 * info log, and stderr as an error log. This only works on UNIX.
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46 */
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47 void log_grab_stdout(void);
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48 void log_grab_stderr(void);
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49
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50 #ifdef __cplusplus
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51 }
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52 #endif
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53
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54 #endif /* LOGGER_H_ */
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