log.py: Add set_flags()

Signed-off-by: Jan Lindemann <jan@janware.com>

tools/python/jwutils/Cmd.py

@@ -35,6 +35,7 @@ def run_sub_commands(description = '', prefix = 'Cmd'): # export
     parser = argparse.ArgumentParser(usage=os.path.basename(sys.argv[0]) + ' [command] [options]',
 	formatter_class=argparse.ArgumentDefaultsHelpFormatter, description=description)
     parser.add_argument('--log-level', help='Log level', default='notice')
+    parser.add_argument('--log-flags', help='Log flags', default='stderr,position,prio,color')
     subparsers = parser.add_subparsers(title='Available commands', metavar='')
 
     for (name, cls) in classes:
@@ -46,4 +47,5 @@ def run_sub_commands(description = '', prefix = 'Cmd'): # export
 
     args=parser.parse_args()
     log.set_level(args.log_level)
+    log.set_flags(args.log_flags)
     args.func(args)

tools/python/jwutils/log.py

@@ -1,4 +1,8 @@
+from __future__ import print_function
 import syslog
+import sys
+import inspect
+from os.path import basename
 
 EMERG = syslog.LOG_EMERG
 ALERT = syslog.LOG_ALERT
@@ -13,14 +17,97 @@ OFF = DEVEL + 1
 
 level = NOTICE
 
+CONSOLE_FONT_BOLD    = '\033[1m'
+CONSOLE_FONT_RED     = '\033[31m'
+CONSOLE_FONT_GREEN   = '\033[32m'
+CONSOLE_FONT_YELLOW  = '\033[33m'
+CONSOLE_FONT_BLUE    = '\033[34m'
+
+CONSOLE_FONT_MAGENTA = '\033[35m'
+CONSOLE_FONT_CYAN    = '\033[36m'
+CONSOLE_FONT_WHITE   = '\033[37m'
+
+CONSOLE_FONT_BLINK   = '\033[5m'
+CONSOLE_FONT_OFF     = '\033[m'
+
+f_position   = 'position'
+f_stderr     = 'stderr'
+f_stdout     = 'stdout'
+f_prio       = 'prio'
+f_color      = 'color'
+f_default = [ f_position, f_stderr, f_prio, f_color ]
+
+flags = set(f_default)
+
+short_prio_str = {
+    EMERG   : '<Y>',
+    ALERT   : '<A>',
+    CRIT    : '<C>',
+    ERR     : '<E>',
+    WARNING : '<W>',
+    NOTICE  : '<N>',
+    INFO    : '<I>',
+    DEBUG   : '<D>',
+    DEVEL   : '<V>',
+}
+
+prio_colors = {
+    DEVEL   : [ "", "" ],
+    DEBUG   : [ "", "" ],
+    INFO    : [ CONSOLE_FONT_BLUE, CONSOLE_FONT_OFF ],
+    NOTICE  : [ CONSOLE_FONT_GREEN, CONSOLE_FONT_OFF ],
+    WARNING : [ CONSOLE_FONT_YELLOW, CONSOLE_FONT_OFF ],
+    ERR     : [ CONSOLE_FONT_BOLD + CONSOLE_FONT_RED, CONSOLE_FONT_OFF ],
+    CRIT    : [ CONSOLE_FONT_BOLD + CONSOLE_FONT_MAGENTA, CONSOLE_FONT_OFF ],
+    ALERT   : [ CONSOLE_FONT_BOLD + CONSOLE_FONT_MAGENTA, CONSOLE_FONT_OFF ],
+    EMERG   : [ CONSOLE_FONT_BOLD + CONSOLE_FONT_MAGENTA, CONSOLE_FONT_OFF ],
+}
+
+def __pad(token, total_size, right_align = False):
+    add = total_size - len(token)
+    if add <= 0:
+        return token
+    space = ' ' * add
+    if right_align:
+        return space + token
+    return token + space
+
 def slog(prio, *args): # export
+
     if prio > level:
         return
+
     msg = ''
-    for a in args:
-        msg += ' ' + str(a)
+    color_on = ''
+    color_off = ''
+    file = sys.stderr
+
+    if f_prio in flags:
+        msg += short_prio_str[prio] + ' '
+
+    if f_position in flags:
+        caller_frame = inspect.currentframe().f_back
+        line = '[' + __pad(str(caller_frame.f_lineno), 4, True) + ']'
+        file = __pad(basename(caller_frame.f_code.co_filename), 20)
+        msg += file + line
+
+    if f_color in flags:
+        color_on, color_off = prio_colors[prio]
+
+    if len(args):
+        margs = ''
+        for a in args:
+            margs += ' ' + str(a)
+        msg += color_on + margs + color_off
+
+    if f_stdout in flags:
+        file = sys.stdout
+
+    if f_stderr in flags:
+        file = sys.stderr
+
     if len(msg):
-        print msg[1:]
+        print(msg, file=file)
 
 def parse_log_prio_str(prio): # export
     try:
@@ -54,10 +141,29 @@ def parse_log_prio_str(prio): # export
             return map_prio_str_to_val[prio]
     raise Exception("Unknown priority string \"", prio, "\"")
 
-
 def set_level(level_): # export
     global level
     if isinstance(level_, basestring):
         level = parse_log_prio_str(level_)
         return
     level = level_
+
+def set_flags(flags_): # export
+    global flags
+    flags = set(flags_.split(','))
+
+    #syslog
+    #console
+    #color
+    #prio
+    #position
+    #ide
+    #trace_rename_thread_to_shorter
+    #trace_rename_thread_to_longer
+    #trace_inout
+    #skip_openlog
+    #id
+    #date
+    #pid
+    #highlight_first_error
+