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Merge pull request #552 from ChinYikMing/feat/logging-api
Standardize logging utility
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,125 @@ | ||
| /* | ||
| * Copyright (c) 2020 rxi | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to | ||
| * deal in the Software without restriction, including without limitation the | ||
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or | ||
| * sell copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included in | ||
| * all copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | ||
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | ||
| * IN THE SOFTWARE. | ||
| */ | ||
|
|
||
| #include "log.h" | ||
|
|
||
| static struct { | ||
| void *udata; | ||
| log_lock_func_t lock; | ||
| int level; | ||
| bool quiet; | ||
| } L; | ||
|
|
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| static const char *level_strings[] = { | ||
| "TRACE", "DEBUG", "INFO", "WARN", "ERROR", "FATAL", | ||
| }; | ||
|
|
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| #if RV32_HAS(LOG_COLOR) | ||
| static const char *level_colors[] = { | ||
| "\x1b[94m", "\x1b[36m", "\x1b[32m", "\x1b[33m", "\x1b[31m", "\x1b[35m", | ||
| }; | ||
| #endif /* RV32_HAS(LOG_COLOR) */ | ||
|
|
||
| static void stdout_callback(log_event_t *ev) | ||
| { | ||
| char buf[16]; | ||
| buf[strftime(buf, sizeof(buf), "%H:%M:%S", ev->time)] = '\0'; | ||
| #if RV32_HAS(LOG_COLOR) | ||
| fprintf(ev->udata, "%s %s%-5s\x1b[0m \x1b[90m%s:%d:\x1b[0m ", buf, | ||
| level_colors[ev->level], level_strings[ev->level], ev->file, | ||
| ev->line); | ||
| #else | ||
| fprintf(ev->udata, "%s %-5s %s:%d: ", buf, level_strings[ev->level], | ||
| ev->file, ev->line); | ||
| #endif /* RV32_HAS(LOG_COLOR) */ | ||
| vfprintf(ev->udata, ev->fmt, ev->ap); | ||
| fprintf(ev->udata, "\n"); | ||
| fflush(ev->udata); | ||
| } | ||
|
|
||
| static void lock(void) | ||
| { | ||
| if (L.lock) | ||
| L.lock(true, L.udata); | ||
| } | ||
|
|
||
| static void unlock(void) | ||
| { | ||
| if (L.lock) | ||
| L.lock(false, L.udata); | ||
| } | ||
|
|
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| const char *log_level_string(int level) | ||
| { | ||
| return level_strings[level]; | ||
| } | ||
|
|
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| void log_set_lock(log_lock_func_t fn, void *udata) | ||
| { | ||
| L.lock = fn; | ||
| L.udata = udata; | ||
| } | ||
|
|
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| void log_set_level(int level) | ||
| { | ||
| L.level = level; | ||
| } | ||
|
|
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| void log_set_quiet(bool enable) | ||
| { | ||
| L.quiet = enable; | ||
| } | ||
|
|
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| static void init_event(log_event_t *ev, void *udata) | ||
| { | ||
| if (!ev->time) { | ||
| time_t t = time(NULL); | ||
| ev->time = localtime(&t); | ||
| } | ||
| ev->udata = udata; | ||
| } | ||
|
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| void log_set_stdout_stream(FILE *stream) | ||
| { | ||
| L.udata = stream; | ||
| } | ||
|
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| void log_impl(int level, const char *file, int line, const char *fmt, ...) | ||
| { | ||
| log_event_t ev = { | ||
| .fmt = fmt, | ||
| .file = file, | ||
| .line = line, | ||
| .level = level, | ||
| }; | ||
|
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| lock(); | ||
|
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| if (!L.quiet && level >= L.level) { | ||
| init_event(&ev, L.udata ? L.udata : stdout); | ||
| va_start(ev.ap, fmt); | ||
| stdout_callback(&ev); | ||
| va_end(ev.ap); | ||
| } | ||
|
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||
| unlock(); | ||
| } |
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