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log: add LOG_CLASS_NONE and use as initializer for log_level

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This means that logging will be completely disabled until log_init()
has been called, which is useful to prevent log spam when running
UNITTEST{} blocks in debug builds.

Note that this doesn't change the default log level at runtime, which
was already being set to LOG_CLASS_INFO in main.c and client.c.

The new log level is also exposed to the command-line interface as
`--log-level=none`, which allows disabling logging entirely.
This commit is contained in:
Craig Barnes 2021-06-26 22:15:09 +01:00
parent 0ff8f72a9d
commit 5dca0458a0
14 changed files with 113 additions and 93 deletions
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49
main.c
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@ -61,27 +61,27 @@ print_usage(const char *prog_name)
"Usage: %s [OPTIONS...] command [ARGS...]\n"
"\n"
"Options:\n"
" -c,--config=PATH load configuration from PATH ($XDG_CONFIG_HOME/foot/foot.ini)\n"
" -C,--check-config verify configuration, exit with 0 if ok, otherwise exit with 1\n"
" -o,--override=[section.]key=value override configuration option\n"
" -f,--font=FONT comma separated list of fonts in fontconfig format (monospace)\n"
" -t,--term=TERM value to set the environment variable TERM to (%s)\n"
" -T,--title=TITLE initial window title (foot)\n"
" -a,--app-id=ID window application ID (foot)\n"
" -m,--maximized start in maximized mode\n"
" -F,--fullscreen start in fullscreen mode\n"
" -L,--login-shell start shell as a login shell\n"
" -D,--working-directory=DIR directory to start in (CWD)\n"
" -w,--window-size-pixels=WIDTHxHEIGHT initial width and height, in pixels\n"
" -W,--window-size-chars=WIDTHxHEIGHT initial width and height, in characters\n"
" -s,--server[=PATH] run as a server (use 'footclient' to start terminals).\n"
" Without PATH, $XDG_RUNTIME_DIR/foot-$WAYLAND_DISPLAY.sock will be used.\n"
" -H,--hold remain open after child process exits\n"
" -p,--print-pid=FILE|FD print PID to file or FD (only applicable in server mode)\n"
" -d,--log-level={info|warning|error} log level (info)\n"
" -l,--log-colorize=[{never|always|auto}] enable/disable colorization of log output on stderr\n"
" -s,--log-no-syslog disable syslog logging (only applicable in server mode)\n"
" -v,--version show the version number and quit\n",
" -c,--config=PATH load configuration from PATH ($XDG_CONFIG_HOME/foot/foot.ini)\n"
" -C,--check-config verify configuration, exit with 0 if ok, otherwise exit with 1\n"
" -o,--override=[section.]key=value override configuration option\n"
" -f,--font=FONT comma separated list of fonts in fontconfig format (monospace)\n"
" -t,--term=TERM value to set the environment variable TERM to (%s)\n"
" -T,--title=TITLE initial window title (foot)\n"
" -a,--app-id=ID window application ID (foot)\n"
" -m,--maximized start in maximized mode\n"
" -F,--fullscreen start in fullscreen mode\n"
" -L,--login-shell start shell as a login shell\n"
" -D,--working-directory=DIR directory to start in (CWD)\n"
" -w,--window-size-pixels=WIDTHxHEIGHT initial width and height, in pixels\n"
" -W,--window-size-chars=WIDTHxHEIGHT initial width and height, in characters\n"
" -s,--server[=PATH] run as a server (use 'footclient' to start terminals).\n"
" Without PATH, $XDG_RUNTIME_DIR/foot-$WAYLAND_DISPLAY.sock will be used.\n"
" -H,--hold remain open after child process exits\n"
" -p,--print-pid=FILE|FD print PID to file or FD (only applicable in server mode)\n"
" -d,--log-level={info|warning|error|none} log level (info)\n"
" -l,--log-colorize=[{never|always|auto}] enable/disable colorization of log output on stderr\n"
" -s,--log-no-syslog disable syslog logging (only applicable in server mode)\n"
" -v,--version show the version number and quit\n",
prog_name, prog_name, DEFAULT_TERM);
}
@ -383,11 +383,14 @@ main(int argc, char *const *argv)
log_init(log_colorize, as_server && log_syslog,
as_server ? LOG_FACILITY_DAEMON : LOG_FACILITY_USER, log_level);
_Static_assert(LOG_CLASS_ERROR + 1 == FCFT_LOG_CLASS_ERROR,
_Static_assert((int)LOG_CLASS_ERROR == (int)FCFT_LOG_CLASS_ERROR,
"fcft log level enum offset");
_Static_assert((int)LOG_COLORIZE_ALWAYS == (int)FCFT_LOG_COLORIZE_ALWAYS,
"fcft colorize enum mismatch");
fcft_log_init((enum fcft_log_colorize)log_colorize, as_server && log_syslog, log_level + 1);
fcft_log_init(
(enum fcft_log_colorize)log_colorize,
as_server && log_syslog,
(enum fcft_log_class)log_level);
argc -= optind;
argv += optind;