From f0fd423d0bf83bc5c3f9d39e9c09397fbe8caed2 Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Thu, 26 Aug 2010 23:41:26 -0700 Subject: [PATCH] altosui: Move number parsing code to Altos general class This moves these shared functions to the global shared class. Signed-off-by: Keith Packard --- ao-tools/altosui/Altos.java | 86 ++++++++++++++++++++++++++++++++ ao-tools/altosui/AltosDebug.java | 43 ++-------------- ao-tools/altosui/AltosParse.java | 10 +++- 3 files changed, 98 insertions(+), 41 deletions(-) diff --git a/ao-tools/altosui/Altos.java b/ao-tools/altosui/Altos.java index 53359e23..07bd01ae 100644 --- 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; + } } diff --git a/ao-tools/altosui/AltosDebug.java b/ao-tools/altosui/AltosDebug.java index 06c9a0bd..ca2e5a90 100644 --- a/ao-tools/altosui/AltosDebug.java +++ b/ao-tools/altosui/AltosDebug.java @@ -58,41 +58,6 @@ public class AltosDebug extends AltosSerial { public static final byte GET_CHIP_ID = 0x68; - 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 boolean isspace(int c) { - switch (c) { - case ' ': - case '\t': - return true; - } - return false; - } - - 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; - } - boolean debug_mode; void ensure_debug_mode() { @@ -145,14 +110,14 @@ public class AltosDebug extends AltosSerial { int start = 0; while (i < length) { String line = get_reply().trim(); - if (!ishex(line) || line.length() % 2 != 0) + if (!Altos.ishex(line) || line.length() % 2 != 0) throw new IOException( String.format ("Invalid reply \"%s\"", line)); int this_time = line.length() / 2; for (int j = 0; j < this_time; j++) - data[start + j] = (byte) ((fromhex(line.charAt(j*2)) << 4) + - fromhex(line.charAt(j*2+1))); + data[start + j] = (byte) ((Altos.fromhex(line.charAt(j*2)) << 4) + + Altos.fromhex(line.charAt(j*2+1))); start += this_time; i += this_time; } @@ -199,7 +164,7 @@ public class AltosDebug extends AltosSerial { String line = get_reply().trim(); String tokens[] = line.split("\\s+"); for (int j = 0; j < tokens.length; j++) { - if (!ishex(tokens[j]) || + if (!Altos.ishex(tokens[j]) || tokens[j].length() != 2) throw new IOException( String.format diff --git a/ao-tools/altosui/AltosParse.java b/ao-tools/altosui/AltosParse.java index a60dc694..4d82de78 100644 --- a/ao-tools/altosui/AltosParse.java +++ b/ao-tools/altosui/AltosParse.java @@ -20,10 +20,16 @@ package altosui; import java.text.*; import java.lang.*; +import altosui.Altos; + public class AltosParse { + static boolean isdigit(char c) { + return '0' <= c && c <= '9'; + } + static int parse_int(String v) throws ParseException { try { - return Integer.parseInt(v); + return Altos.fromdec(v); } catch (NumberFormatException e) { throw new ParseException("error parsing int " + v, 0); } @@ -31,7 +37,7 @@ public class AltosParse { static int parse_hex(String v) throws ParseException { try { - return Integer.parseInt(v, 16); + return Altos.fromhex(v); } catch (NumberFormatException e) { throw new ParseException("error parsing hex " + v, 0); } -- 2.30.2