1  /*
       2   * Copyright (C) 2014 Karel Zak <kzak@redhat.com>
       3   *
       4   * This file may be redistributed under the terms of the
       5   * GNU Lesser General Public License.
       6   */
       7  
       8  /**
       9   * SECTION: init
      10   * @title: Library initialization
      11   * @short_description: initialize debugging
      12   *
      13   * The library debug stuff.
      14   */
      15  
      16  #include <stdarg.h>
      17  
      18  #include "smartcolsP.h"
      19  
      20  UL_DEBUG_DEFINE_MASK(libsmartcols);
      21  UL_DEBUG_DEFINE_MASKNAMES(libsmartcols) =
      22  {
      23  	{ "all", SCOLS_DEBUG_ALL,	"info about all subsystems" },
      24  	{ "buff", SCOLS_DEBUG_BUFF,	"output buffer utils" },
      25  	{ "cell", SCOLS_DEBUG_CELL,	"table cell utils" },
      26  	{ "col", SCOLS_DEBUG_COL,	"cols utils" },
      27  	{ "help", SCOLS_DEBUG_HELP,	"this help" },
      28  	{ "group", SCOLS_DEBUG_GROUP,	"lines grouping utils" },
      29  	{ "line", SCOLS_DEBUG_LINE,	"table line utils" },
      30  	{ "tab", SCOLS_DEBUG_TAB,	"table utils" },
      31  	{ NULL, 0, NULL }
      32  };
      33  
      34  /**
      35   * scols_init_debug:
      36   * @mask: debug mask (0xffff to enable full debugging)
      37   *
      38   * If the @mask is not specified, then this function reads
      39   * the LIBSMARTCOLS_DEBUG environment variable to get the mask.
      40   *
      41   * Already initialized debugging stuff cannot be changed. Calling
      42   * this function twice has no effect.
      43   */
      44  void scols_init_debug(int mask)
      45  {
      46  	if (libsmartcols_debug_mask)
      47  		return;
      48  
      49  	__UL_INIT_DEBUG_FROM_ENV(libsmartcols, SCOLS_DEBUG_, mask, LIBSMARTCOLS_DEBUG);
      50  
      51  	if (libsmartcols_debug_mask != SCOLS_DEBUG_INIT
      52  	    && libsmartcols_debug_mask != (SCOLS_DEBUG_HELP|SCOLS_DEBUG_INIT)) {
      53  		const char *ver = NULL;
      54  
      55  		scols_get_library_version(&ver);
      56  
      57  		DBG(INIT, ul_debug("library debug mask: 0x%04x", libsmartcols_debug_mask));
      58  		DBG(INIT, ul_debug("library version: %s", ver));
      59  	}
      60  	ON_DBG(HELP, ul_debug_print_masks("LIBSMARTCOLS_DEBUG",
      61  				UL_DEBUG_MASKNAMES(libsmartcols)));
      62  }