/*
 * Copyright (C) 2002,2003 Red Hat, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include "vice.h"

#include <string.h>

#include <glib.h>
#include "debug.h"

guint _vte_debug_flags;

void _vte_debug_init(void)
{
#ifdef VTE_DEBUG
  const GDebugKey keys[] = {
    { "misc",         VTE_DEBUG_MISC         },
    { "io",           VTE_DEBUG_IO           },
    { "adj",          VTE_DEBUG_ADJ          },
    { "updates",      VTE_DEBUG_UPDATES      },
    { "events",       VTE_DEBUG_EVENTS       },
    { "parse",        VTE_DEBUG_PARSE        },
    { "signals",      VTE_DEBUG_SIGNALS      },
    { "selection",    VTE_DEBUG_SELECTION    },
    { "substitution", VTE_DEBUG_SUBSTITUTION },
    { "ring",         VTE_DEBUG_RING         },
    { "pty",          VTE_DEBUG_PTY          },
    { "cursor",       VTE_DEBUG_CURSOR       },
    { "keyboard",     VTE_DEBUG_KEYBOARD     },
    { "lifecycle",    VTE_DEBUG_LIFECYCLE    },
    { "matcher",      VTE_DEBUG_MATCHER      },
    { "work",         VTE_DEBUG_WORK         },
    { "cells",        VTE_DEBUG_CELLS        },
    { "timeout",      VTE_DEBUG_TIMEOUT      },
    { "draw",         VTE_DEBUG_DRAW         },
    { "ally",         VTE_DEBUG_ALLY         },
    { "pangocairo",   VTE_DEBUG_PANGOCAIRO   },
    { "widget-size",  VTE_DEBUG_WIDGET_SIZE  },
    { "style",        VTE_DEBUG_STYLE        },
    { "resize",       VTE_DEBUG_RESIZE       },
    { "regex",        VTE_DEBUG_REGEX        },
    { "hyperlink",    VTE_DEBUG_HYPERLINK    },
  };

  _vte_debug_flags = g_parse_debug_string (g_getenv("VTE_DEBUG"),
                                           keys, G_N_ELEMENTS (keys));
  _vte_debug_print(0xFFFFFFFF, "VTE debug flags = %x\n", _vte_debug_flags);
#endif /* VTE_DEBUG */
}

const char *_vte_debug_sequence_to_string(const char *str, gssize length)
{
#if defined(VTE_DEBUG)
        static const char codes[][6] = {
                "NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK", "BEL",
                "BS", "HT", "LF", "VT", "FF", "CR", "SO", "SI",
                "DLE", "DC1", "DC2", "DC3", "DC4", "NAK", "SYN", "ETB",
                "CAN", "EM", "SUB", "ESC", "FS", "GS", "RS", "US",
                "SPACE"
        };
        static GString *buf;
        gssize i;

        if (str == NULL) {
                return "(nil)";
        }

        if (length == -1) {
                length = strlen(str);
        }

        if (buf == NULL) {
                buf = g_string_new(NULL);
        }

        g_string_truncate(buf, 0);
        for (i = 0; i < length; i++) {
                guint8 c = (guint8)str[i];
                if (i > 0) {
                        g_string_append_c(buf, ' ');
                }

                if (c == '\033' /* ESC */) {
                    switch (str[++i]) {
                        case '_': g_string_append(buf, "APC"); break;
                        case '[': g_string_append(buf, "CSI"); break;
                        case 'P': g_string_append(buf, "DCS"); break;
                        case ']': g_string_append(buf, "OSC"); break;
                        case '^': g_string_append(buf, "PM"); break;
                        case '\\': g_string_append(buf, "ST"); break;
                        default: g_string_append(buf, "ESC"); i--; break;
                    }
                } else if (c <= 0x20) {
                    g_string_append(buf, codes[c]);
                } else if (c == 0x7f) {
                    g_string_append(buf, "DEL");
                } else if (c >= 0x80) {
                    g_string_append_printf(buf, "\\%02x ", c);
                } else {
                    g_string_append_c(buf, c);
                }
        }

        return buf->str;
#else
        return NULL;
#endif /* VTE_DEBUG */
}
