altosui: Move number parsing code to Altos general class

[fw/altos] / ao-tools / altosui / Altos.java

diff --git a/ao-tools/altosui/Altos.java b/ao-tools/altosui/Altos.java
index 53359e23715dd0c0e584cac77ccd1b16bdbe4a45..07bd01ae2fb5bb5e4d342ac171514be0d7885d25 100644 (file)
--- a/ao-tools/altosui/Altos.java
+++ b/ao-tools/altosui/Altos.java
@@ -114,4 +114,90 @@ public class Altos {
        static final int AO_GPS_DATE_VALID = (1 << 6);
        static final int AO_GPS_NUM_SAT_SHIFT = 0;
        static final int AO_GPS_NUM_SAT_MASK = 0xf;
+
+       static boolean isspace(int c) {
+               switch (c) {
+               case ' ':
+               case '\t':
+                       return true;
+               }
+               return false;
+       }
+
+       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;
+       }
+
+       static boolean ishex(String s) {
+               for (int i = 0; i < s.length(); i++)
+                       if (!ishex(s.charAt(i)))
+                               return false;
+               return true;
+       }
+
+       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;
+       }
+
+       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;
+       }
+
+       static boolean isdec(int c) {
+               if ('0' <= c && c <= '9')
+                       return true;
+               return false;
+       }
+
+       static boolean isdec(String s) {
+               for (int i = 0; i < s.length(); i++)
+                       if (!isdec(s.charAt(i)))
+                               return false;
+               return true;
+       }
+
+       static int fromdec(int c) {
+               if ('0' <= c && c <= '9')
+                       return c - '0';
+               return -1;
+       }
+
+       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;
+       }
 }