altosui: Add back in the split-out Altos constants as AltosLib
authorKeith Packard <keithp@keithp.com>
Tue, 3 Jan 2012 04:32:35 +0000 (20:32 -0800)
committerKeith Packard <keithp@keithp.com>
Sun, 3 Jun 2012 02:26:32 +0000 (19:26 -0700)
These were pulled out of Altos.java, but not added back to git

Signed-off-by: Keith Packard <keithp@keithp.com>
altosui/AltosConfigData.java [deleted file]
altosui/altoslib/src/org/altusmetrum/AltosLib/AltosConfigData.java [new file with mode: 0644]
altosui/altoslib/src/org/altusmetrum/AltosLib/AltosLib.java [new file with mode: 0644]

diff --git a/altosui/AltosConfigData.java b/altosui/AltosConfigData.java
deleted file mode 100644 (file)
index ef34dd3..0000000
+++ /dev/null
@@ -1,191 +0,0 @@
-/*
- * Copyright © 2011 Keith Packard <keithp@keithp.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program 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
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- */
-
-package altosui;
-
-import java.awt.*;
-import java.awt.event.*;
-import javax.swing.*;
-import javax.swing.filechooser.FileNameExtensionFilter;
-import javax.swing.table.*;
-import java.io.*;
-import java.util.*;
-import java.text.*;
-import java.util.prefs.*;
-import java.util.concurrent.*;
-import org.altusmetrum.AltosLib.*;
-
-import libaltosJNI.*;
-
-public class AltosConfigData implements Iterable<String> {
-
-       /* Version information */
-       String  manufacturer;
-       String  product;
-       String  version;
-       int     log_format;
-       int     serial;
-
-       /* Strings returned */
-       LinkedList<String>      lines;
-
-       /* Config information */
-       int     config_major;
-       int     config_minor;
-       int     main_deploy;
-       int     apogee_delay;
-       int     radio_channel;
-       int     radio_setting;
-       int     radio_frequency;
-       String  callsign;
-       int     accel_cal_plus, accel_cal_minus;
-       int     radio_calibration;
-       int     flight_log_max;
-       int     ignite_mode;
-       int     stored_flight;
-       int     storage_size;
-       int     storage_erase_unit;
-
-       static String get_string(String line, String label) throws  ParseException {
-               if (line.startsWith(label)) {
-                       String  quoted = line.substring(label.length()).trim();
-
-                       if (quoted.startsWith("\""))
-                               quoted = quoted.substring(1);
-                       if (quoted.endsWith("\""))
-                               quoted = quoted.substring(0,quoted.length()-1);
-                       return quoted;
-               }
-               throw new ParseException("mismatch", 0);
-       }
-
-       static int get_int(String line, String label) throws NumberFormatException, ParseException {
-               if (line.startsWith(label)) {
-                       String tail = line.substring(label.length()).trim();
-                       String[] tokens = tail.split("\\s+");
-                       if (tokens.length > 0)
-                               return  Integer.parseInt(tokens[0]);
-               }
-               throw new ParseException("mismatch", 0);
-       }
-
-       public Iterator<String> iterator() {
-               return lines.iterator();
-       }
-
-       public int log_available() {
-               switch (log_format) {
-               case Altos.AO_LOG_FORMAT_TINY:
-                       if (stored_flight == 0)
-                               return 1;
-                       return 0;
-               default:
-                       if (flight_log_max <= 0)
-                               return 1;
-                       int     log_space = storage_size - storage_erase_unit;
-                       int     log_used = stored_flight * flight_log_max;
-
-                       if (log_used >= log_space)
-                               return 0;
-                       return (log_space - log_used) / flight_log_max;
-               }
-       }
-
-       int[] parse_version(String v) {
-               String[] parts = v.split("\\.");
-               int r[] = new int[parts.length];
-
-               for (int i = 0; i < parts.length; i++) {
-                       try {
-                               r[i] = Altos.fromdec(parts[i]);
-                       } catch (NumberFormatException n) {
-                               r[i] = 0;
-                       }
-               }
-
-               return r;
-       }
-       
-       public int compare_version(String other) {
-               int[]   me = parse_version(version);
-               int[]   them = parse_version(other);
-
-               int     l = Math.min(me.length, them.length);
-
-               for (int i = 0; i < l; i++) {
-                       int     d = me[i] - them[i];
-                       if (d != 0)
-                               return d;
-               }
-               if (me.length > l)
-                       return 1;
-               if (them.length > l)
-                       return -1;
-               return 0;
-       }
-
-       public AltosConfigData(AltosSerial serial_line) throws InterruptedException, TimeoutException {
-               serial_line.printf("c s\np\nf\nl\nv\n");
-               lines = new LinkedList<String>();
-               radio_setting = 0;
-               radio_frequency = 0;
-               stored_flight = 0;
-               for (;;) {
-                       String line = serial_line.get_reply();
-                       if (line == null)
-                               throw new TimeoutException();
-                       if (line.contains("Syntax error"))
-                               continue;
-                       lines.add(line);
-                       try { serial = get_int(line, "serial-number"); } catch (Exception e) {}
-                       try { log_format = get_int(line, "log-format"); } catch (Exception e) {}
-                       try { main_deploy = get_int(line, "Main deploy:"); } catch (Exception e) {}
-                       try { apogee_delay = get_int(line, "Apogee delay:"); } catch (Exception e) {}
-                       try { radio_channel = get_int(line, "Radio channel:"); } catch (Exception e) {}
-                       try { radio_setting = get_int(line, "Radio setting:"); } catch (Exception e) {}
-                       try {
-                               radio_frequency = get_int(line, "Frequency:");
-                               if (radio_frequency < 0)
-                                       radio_frequency = 434550;
-                       } catch (Exception e) {}
-                       try {
-                               if (line.startsWith("Accel cal")) {
-                                       String[] bits = line.split("\\s+");
-                                       if (bits.length >= 6) {
-                                               accel_cal_plus = Integer.parseInt(bits[3]);
-                                               accel_cal_minus = Integer.parseInt(bits[5]);
-                                       }
-                               }
-                       } catch (Exception e) {}
-                       try { radio_calibration = get_int(line, "Radio cal:"); } catch (Exception e) {}
-                       try { flight_log_max = get_int(line, "Max flight log:"); } catch (Exception e) {}
-                       try { ignite_mode = get_int(line, "Ignite mode:"); } catch (Exception e) {}
-                       try { callsign = get_string(line, "Callsign:"); } catch (Exception e) {}
-                       try { version = get_string(line,"software-version"); } catch (Exception e) {}
-                       try { product = get_string(line,"product"); } catch (Exception e) {}
-
-                       try { get_int(line, "flight"); stored_flight++; }  catch (Exception e) {}
-                       try { storage_size = get_int(line, "Storage size:"); } catch (Exception e) {}
-                       try { storage_erase_unit = get_int(line, "Storage erase unit"); } catch (Exception e) {}
-
-                       /* signals the end of the version info */
-                       if (line.startsWith("software-version"))
-                               break;
-               }
-       }
-
-}
\ No newline at end of file
diff --git a/altosui/altoslib/src/org/altusmetrum/AltosLib/AltosConfigData.java b/altosui/altoslib/src/org/altusmetrum/AltosLib/AltosConfigData.java
new file mode 100644 (file)
index 0000000..ef34dd3
--- /dev/null
@@ -0,0 +1,191 @@
+/*
+ * Copyright © 2011 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package altosui;
+
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+import javax.swing.filechooser.FileNameExtensionFilter;
+import javax.swing.table.*;
+import java.io.*;
+import java.util.*;
+import java.text.*;
+import java.util.prefs.*;
+import java.util.concurrent.*;
+import org.altusmetrum.AltosLib.*;
+
+import libaltosJNI.*;
+
+public class AltosConfigData implements Iterable<String> {
+
+       /* Version information */
+       String  manufacturer;
+       String  product;
+       String  version;
+       int     log_format;
+       int     serial;
+
+       /* Strings returned */
+       LinkedList<String>      lines;
+
+       /* Config information */
+       int     config_major;
+       int     config_minor;
+       int     main_deploy;
+       int     apogee_delay;
+       int     radio_channel;
+       int     radio_setting;
+       int     radio_frequency;
+       String  callsign;
+       int     accel_cal_plus, accel_cal_minus;
+       int     radio_calibration;
+       int     flight_log_max;
+       int     ignite_mode;
+       int     stored_flight;
+       int     storage_size;
+       int     storage_erase_unit;
+
+       static String get_string(String line, String label) throws  ParseException {
+               if (line.startsWith(label)) {
+                       String  quoted = line.substring(label.length()).trim();
+
+                       if (quoted.startsWith("\""))
+                               quoted = quoted.substring(1);
+                       if (quoted.endsWith("\""))
+                               quoted = quoted.substring(0,quoted.length()-1);
+                       return quoted;
+               }
+               throw new ParseException("mismatch", 0);
+       }
+
+       static int get_int(String line, String label) throws NumberFormatException, ParseException {
+               if (line.startsWith(label)) {
+                       String tail = line.substring(label.length()).trim();
+                       String[] tokens = tail.split("\\s+");
+                       if (tokens.length > 0)
+                               return  Integer.parseInt(tokens[0]);
+               }
+               throw new ParseException("mismatch", 0);
+       }
+
+       public Iterator<String> iterator() {
+               return lines.iterator();
+       }
+
+       public int log_available() {
+               switch (log_format) {
+               case Altos.AO_LOG_FORMAT_TINY:
+                       if (stored_flight == 0)
+                               return 1;
+                       return 0;
+               default:
+                       if (flight_log_max <= 0)
+                               return 1;
+                       int     log_space = storage_size - storage_erase_unit;
+                       int     log_used = stored_flight * flight_log_max;
+
+                       if (log_used >= log_space)
+                               return 0;
+                       return (log_space - log_used) / flight_log_max;
+               }
+       }
+
+       int[] parse_version(String v) {
+               String[] parts = v.split("\\.");
+               int r[] = new int[parts.length];
+
+               for (int i = 0; i < parts.length; i++) {
+                       try {
+                               r[i] = Altos.fromdec(parts[i]);
+                       } catch (NumberFormatException n) {
+                               r[i] = 0;
+                       }
+               }
+
+               return r;
+       }
+       
+       public int compare_version(String other) {
+               int[]   me = parse_version(version);
+               int[]   them = parse_version(other);
+
+               int     l = Math.min(me.length, them.length);
+
+               for (int i = 0; i < l; i++) {
+                       int     d = me[i] - them[i];
+                       if (d != 0)
+                               return d;
+               }
+               if (me.length > l)
+                       return 1;
+               if (them.length > l)
+                       return -1;
+               return 0;
+       }
+
+       public AltosConfigData(AltosSerial serial_line) throws InterruptedException, TimeoutException {
+               serial_line.printf("c s\np\nf\nl\nv\n");
+               lines = new LinkedList<String>();
+               radio_setting = 0;
+               radio_frequency = 0;
+               stored_flight = 0;
+               for (;;) {
+                       String line = serial_line.get_reply();
+                       if (line == null)
+                               throw new TimeoutException();
+                       if (line.contains("Syntax error"))
+                               continue;
+                       lines.add(line);
+                       try { serial = get_int(line, "serial-number"); } catch (Exception e) {}
+                       try { log_format = get_int(line, "log-format"); } catch (Exception e) {}
+                       try { main_deploy = get_int(line, "Main deploy:"); } catch (Exception e) {}
+                       try { apogee_delay = get_int(line, "Apogee delay:"); } catch (Exception e) {}
+                       try { radio_channel = get_int(line, "Radio channel:"); } catch (Exception e) {}
+                       try { radio_setting = get_int(line, "Radio setting:"); } catch (Exception e) {}
+                       try {
+                               radio_frequency = get_int(line, "Frequency:");
+                               if (radio_frequency < 0)
+                                       radio_frequency = 434550;
+                       } catch (Exception e) {}
+                       try {
+                               if (line.startsWith("Accel cal")) {
+                                       String[] bits = line.split("\\s+");
+                                       if (bits.length >= 6) {
+                                               accel_cal_plus = Integer.parseInt(bits[3]);
+                                               accel_cal_minus = Integer.parseInt(bits[5]);
+                                       }
+                               }
+                       } catch (Exception e) {}
+                       try { radio_calibration = get_int(line, "Radio cal:"); } catch (Exception e) {}
+                       try { flight_log_max = get_int(line, "Max flight log:"); } catch (Exception e) {}
+                       try { ignite_mode = get_int(line, "Ignite mode:"); } catch (Exception e) {}
+                       try { callsign = get_string(line, "Callsign:"); } catch (Exception e) {}
+                       try { version = get_string(line,"software-version"); } catch (Exception e) {}
+                       try { product = get_string(line,"product"); } catch (Exception e) {}
+
+                       try { get_int(line, "flight"); stored_flight++; }  catch (Exception e) {}
+                       try { storage_size = get_int(line, "Storage size:"); } catch (Exception e) {}
+                       try { storage_erase_unit = get_int(line, "Storage erase unit"); } catch (Exception e) {}
+
+                       /* signals the end of the version info */
+                       if (line.startsWith("software-version"))
+                               break;
+               }
+       }
+
+}
\ No newline at end of file
diff --git a/altosui/altoslib/src/org/altusmetrum/AltosLib/AltosLib.java b/altosui/altoslib/src/org/altusmetrum/AltosLib/AltosLib.java
new file mode 100644 (file)
index 0000000..2921d04
--- /dev/null
@@ -0,0 +1,348 @@
+/*
+ * Copyright © 2010 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package org.altusmetrum.AltosLib;
+
+import java.awt.*;
+import java.util.*;
+import java.text.*;
+import java.nio.charset.Charset;
+
+public class AltosLib {
+       /* EEProm command letters */
+       public static final int AO_LOG_FLIGHT = 'F';
+       public static final int AO_LOG_SENSOR = 'A';
+       public static final int AO_LOG_TEMP_VOLT = 'T';
+       public static final int AO_LOG_DEPLOY = 'D';
+       public static final int AO_LOG_STATE = 'S';
+       public static final int AO_LOG_GPS_TIME = 'G';
+       public static final int AO_LOG_GPS_LAT = 'N';
+       public static final int AO_LOG_GPS_LON = 'W';
+       public static final int AO_LOG_GPS_ALT = 'H';
+       public static final int AO_LOG_GPS_SAT = 'V';
+       public static final int AO_LOG_GPS_DATE = 'Y';
+       public static final int AO_LOG_PRESSURE = 'P';
+
+       /* Added for header fields in eeprom files */
+       public static final int AO_LOG_CONFIG_VERSION = 1000;
+       public static final int AO_LOG_MAIN_DEPLOY = 1001;
+       public static final int AO_LOG_APOGEE_DELAY = 1002;
+       public static final int AO_LOG_RADIO_CHANNEL = 1003;
+       public static final int AO_LOG_CALLSIGN = 1004;
+       public static final int AO_LOG_ACCEL_CAL = 1005;
+       public static final int AO_LOG_RADIO_CAL = 1006;
+       public static final int AO_LOG_MAX_FLIGHT_LOG = 1007;
+       public static final int AO_LOG_MANUFACTURER = 2000;
+       public static final int AO_LOG_PRODUCT = 2001;
+       public static final int AO_LOG_SERIAL_NUMBER = 2002;
+       public static final int AO_LOG_LOG_FORMAT = 2003;
+       public static final int AO_LOG_SOFTWARE_VERSION = 9999;
+
+       /* Added to flag invalid records */
+       public static final int AO_LOG_INVALID = -1;
+
+       /* Flight state numbers and names */
+       public static final int ao_flight_startup = 0;
+       public static final int ao_flight_idle = 1;
+       public static final int ao_flight_pad = 2;
+       public static final int ao_flight_boost = 3;
+       public static final int ao_flight_fast = 4;
+       public static final int ao_flight_coast = 5;
+       public static final int ao_flight_drogue = 6;
+       public static final int ao_flight_main = 7;
+       public static final int ao_flight_landed = 8;
+       public static final int ao_flight_invalid = 9;
+
+       /* Telemetry modes */
+       public static final int ao_telemetry_off = 0;
+       public static final int ao_telemetry_min = 1;
+       public static final int ao_telemetry_standard = 1;
+       public static final int ao_telemetry_0_9 = 2;
+       public static final int ao_telemetry_0_8 = 3;
+       public static final int ao_telemetry_max = 3;
+
+       public static final String[] ao_telemetry_name = {
+               "Off", "Standard Telemetry", "TeleMetrum v0.9", "TeleMetrum v0.8"
+       };
+
+       public static final String launch_sites_url = "http://www.altusmetrum.org/AltOS/launch-sites.txt";
+
+       public static final int ao_telemetry_standard_len = 32;
+       public static final int ao_telemetry_0_9_len = 95;
+       public static final int ao_telemetry_0_8_len = 94;
+
+       public static final int[] ao_telemetry_len = {
+               0, 32, 95, 94
+       };
+
+       public static HashMap<String,Integer>   string_to_state = new HashMap<String,Integer>();
+
+       public static boolean map_initialized = false;
+
+       public static void initialize_map()
+       {
+               string_to_state.put("startup", ao_flight_startup);
+               string_to_state.put("idle", ao_flight_idle);
+               string_to_state.put("pad", ao_flight_pad);
+               string_to_state.put("boost", ao_flight_boost);
+               string_to_state.put("fast", ao_flight_fast);
+               string_to_state.put("coast", ao_flight_coast);
+               string_to_state.put("drogue", ao_flight_drogue);
+               string_to_state.put("apogee", ao_flight_coast);
+               string_to_state.put("main", ao_flight_main);
+               string_to_state.put("landed", ao_flight_landed);
+               string_to_state.put("invalid", ao_flight_invalid);
+               map_initialized = true;
+       }
+
+       public static int telemetry_len(int telemetry) {
+               if (telemetry <= ao_telemetry_max)
+                       return ao_telemetry_len[telemetry];
+               throw new IllegalArgumentException(String.format("Invalid telemetry %d",
+                                                                telemetry));
+       }
+
+       public static String telemetry_name(int telemetry) {
+               if (telemetry <= ao_telemetry_max)
+                       return ao_telemetry_name[telemetry];
+               throw new IllegalArgumentException(String.format("Invalid telemetry %d",
+                                                                telemetry));
+       }
+       
+       public static String[] state_to_string = {
+               "startup",
+               "idle",
+               "pad",
+               "boost",
+               "fast",
+               "coast",
+               "drogue",
+               "main",
+               "landed",
+               "invalid",
+       };
+
+       public static String[] state_to_string_capital = {
+               "Startup",
+               "Idle",
+               "Pad",
+               "Boost",
+               "Fast",
+               "Coast",
+               "Drogue",
+               "Main",
+               "Landed",
+               "Invalid",
+       };
+
+       public static int state(String state) {
+               if (!map_initialized)
+                       initialize_map();
+               if (string_to_state.containsKey(state))
+                       return string_to_state.get(state);
+               return ao_flight_invalid;
+       }
+
+       public static String state_name(int state) {
+               if (state < 0 || state_to_string.length <= state)
+                       return "invalid";
+               return state_to_string[state];
+       }
+
+       public static final int AO_GPS_VALID = (1 << 4);
+       public static final int AO_GPS_RUNNING = (1 << 5);
+       public static final int AO_GPS_DATE_VALID = (1 << 6);
+       public static final int AO_GPS_NUM_SAT_SHIFT = 0;
+       public static final int AO_GPS_NUM_SAT_MASK = 0xf;
+
+       public static final int AO_LOG_FORMAT_UNKNOWN = 0;
+       public static final int AO_LOG_FORMAT_FULL = 1;
+       public static final int AO_LOG_FORMAT_TINY = 2;
+       public static final int AO_LOG_FORMAT_TELEMETRY = 3;
+       public static final int AO_LOG_FORMAT_TELESCIENCE = 4;
+       public static final int AO_LOG_FORMAT_NONE = 127;
+
+       public static boolean isspace(int c) {
+               switch (c) {
+               case ' ':
+               case '\t':
+                       return true;
+               }
+               return false;
+       }
+
+       public static boolean ishex(int c) {
+               if ('0' <= c && c <= '9')
+                       return true;
+               if ('a' <= c && c <= 'f')
+                       return true;
+               if ('A' <= c && c <= 'F')
+                       return true;
+               return false;
+       }
+
+       public static boolean ishex(String s) {
+               for (int i = 0; i < s.length(); i++)
+                       if (!ishex(s.charAt(i)))
+                               return false;
+               return true;
+       }
+
+       public static int fromhex(int c) {
+               if ('0' <= c && c <= '9')
+                       return c - '0';
+               if ('a' <= c && c <= 'f')
+                       return c - 'a' + 10;
+               if ('A' <= c && c <= 'F')
+                       return c - 'A' + 10;
+               return -1;
+       }
+
+       public static int fromhex(String s) throws NumberFormatException {
+               int c, v = 0;
+               for (int i = 0; i < s.length(); i++) {
+                       c = s.charAt(i);
+                       if (!ishex(c)) {
+                               if (i == 0)
+                                       throw new NumberFormatException(String.format("invalid hex \"%s\"", s));
+                               return v;
+                       }
+                       v = v * 16 + fromhex(c);
+               }
+               return v;
+       }
+
+       public static boolean isdec(int c) {
+               if ('0' <= c && c <= '9')
+                       return true;
+               return false;
+       }
+
+       public static boolean isdec(String s) {
+               for (int i = 0; i < s.length(); i++)
+                       if (!isdec(s.charAt(i)))
+                               return false;
+               return true;
+       }
+
+       public static int fromdec(int c) {
+               if ('0' <= c && c <= '9')
+                       return c - '0';
+               return -1;
+       }
+
+       public static int int8(int[] bytes, int i) {
+               return (int) (byte) bytes[i];
+       }
+
+       public static int uint8(int[] bytes, int i) {
+               return bytes[i];
+       }
+
+       public static int int16(int[] bytes, int i) {
+               return (int) (short) (bytes[i] + (bytes[i+1] << 8));
+       }
+
+       public static int uint16(int[] bytes, int i) {
+               return bytes[i] + (bytes[i+1] << 8);
+       }
+
+       public static int uint32(int[] bytes, int i) {
+               return bytes[i] +
+                       (bytes[i+1] << 8) +
+                       (bytes[i+2] << 16) +
+                       (bytes[i+3] << 24);
+       }
+
+       public static final Charset     unicode_set = Charset.forName("UTF-8");
+
+       public static String string(int[] bytes, int s, int l) {
+               if (s + l > bytes.length) {
+                       if (s > bytes.length) {
+                               s = bytes.length;
+                               l = 0;
+                       } else {
+                               l = bytes.length - s;
+                       }
+               }
+
+               int i;
+               for (i = l - 1; i >= 0; i--)
+                       if (bytes[s+i] != 0)
+                               break;
+
+               l = i + 1;
+               byte[]  b = new byte[l];
+
+               for (i = 0; i < l; i++)
+                       b[i] = (byte) bytes[s+i];
+               String n = new String(b, unicode_set);
+               return n;
+       }
+
+       public static int hexbyte(String s, int i) {
+               int c0, c1;
+
+               if (s.length() < i + 2)
+                       throw new NumberFormatException(String.format("invalid hex \"%s\"", s));
+               c0 = s.charAt(i);
+               if (!ishex(c0))
+                       throw new NumberFormatException(String.format("invalid hex \"%c\"", c0));
+               c1 = s.charAt(i+1);
+               if (!ishex(c1))
+                       throw new NumberFormatException(String.format("invalid hex \"%c\"", c1));
+               return fromhex(c0) * 16 + fromhex(c1);
+       }
+
+       public static int[] hexbytes(String s) {
+               int     n;
+               int[]   r;
+               int     i;
+
+               if ((s.length() & 1) != 0)
+                       throw new NumberFormatException(String.format("invalid line \"%s\"", s));
+               n = s.length() / 2;
+               r = new int[n];
+               for (i = 0; i < n; i++)
+                       r[i] = hexbyte(s, i * 2);
+               return r;
+       }
+
+       public static int fromdec(String s) throws NumberFormatException {
+               int c, v = 0;
+               int sign = 1;
+               for (int i = 0; i < s.length(); i++) {
+                       c = s.charAt(i);
+                       if (i == 0 && c == '-') {
+                               sign = -1;
+                       } else if (!isdec(c)) {
+                               if (i == 0)
+                                       throw new NumberFormatException(String.format("invalid number \"%s\"", s));
+                               return v;
+                       } else
+                               v = v * 10 + fromdec(c);
+               }
+               return v * sign;
+       }
+
+       public static String replace_extension(String input, String extension) {
+               int dot = input.lastIndexOf(".");
+               if (dot > 0)
+                       input = input.substring(0,dot);
+               return input.concat(extension);
+       }
+}