#!/usr/bin/env python
# -*- coding: <utf-8> -*-
# Author: Chris Mohler <cr33dog@gmail.com>
# Copyright 2009 Chris Mohler
# "Only Visible" and filename formatting introduced by mh
# License: GPL v3+
# Version 0.4
# GIMP plugin to export layers as PNGs
# modified by Shuning Bian 2011
from gimpfu import *
import os, re
gettext.install("gimp20-python", gimp.locale_directory, unicode=True)
def format_filename(layer):
layername = layer.name.decode('utf-8')
filename1 = layername + "@2x.png"
filename2 = layername + ".png"
return filename1,filename2
def get_layers_to_export(img):
layers = []
for layer in img.layers:
if layer.visible:
layers.append(layer)
return layers
def export_layers(img, path):
dupe = img.duplicate()
savelayers = get_layers_to_export(dupe)
for layer in dupe.layers:
layer.visible = 0
for layer in dupe.layers:
if layer in savelayers:
layer.visible = 1
if layer.mask:
pdb.gimp_layer_remove_mask(layer, 0)
filename1,filename2 = format_filename(layer)
fullpath = os.path.join(path, filename1);
tmp = dupe.duplicate()
pdb.file_png_save(tmp, tmp.layers[0], fullpath, filename1, 0, 9, 1, 1, 1, 1, 1)
imgwidth = pdb.gimp_image_width(img)
imgheight = pdb.gimp_image_height(img)
pdb.gimp_image_scale_full(tmp, imgwidth/2, imgheight/2, 2)
fullpath = os.path.join(path, filename2)
pdb.file_png_save(tmp, tmp.layers[0], fullpath, filename2, 0, 9, 1, 1, 1, 1, 1)
dupe.remove_layer(layer)
register(
proc_name=("python-fu-export-layers-iphone4"),
blurb=("Export visible layers as PNG"),
help=("Export all visible layers as individual PNG files."),
author=("Chris Mohler <cr33dog@gmail.com> + sbian"),
copyright=("Chris Mohler"),
date=("2009"),
label=("as _PNG"),
imagetypes=("*"),
params=[
(PF_IMAGE, "img", "Image", None),
(PF_DIRNAME, "path", "Save PNGs here", os.getcwd()),
],
results=[],
function=(export_layers),
menu=("<Image>/File/E_xport Layers"),
domain=("gimp20-python", gimp.locale_directory)
)
main()
(message type)":"(content length)":"(data)","Where message type is one of:
[key[:value]["\n"key[:value]]["\n"key[:value]..."\n"]":"[message]In words: annotations are key-value pairs where the value may be omitted. Individual annotations are delimited by newlines, and annotations are separated from the message by another newline.
Note there is a newline after the j. The official Socket.IO client uses an additional annotation: r for realm. e.g.1:128:j:{"method":"create_user","params":[{"password":"jhhgffufuhgv","email":"h@h.com"}],"id":"83BCA0A8-7F9D-428A-A546-2EFCBDC20AB3"},
Note the newline after chat.1:18:r:chat:Hello world,
if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)])
{
UIGraphicsBeginImageContextWithOptions(size, NO, [UIScreen mainScreen].scale);
}
else UIGraphicsBeginImageContext(size);
PRODUCT_NAME=""Designed to be ran from the command line, but it should be easily made into a build phase.
IPA="${PRODUCT_NAME}.ipa"
APP="${PRODUCT_NAME}.app"
if [ -z "${PRODUCT_NAME}" ]; then
echo "PRODUCT_NAME not set";
exit 1;
fi
rm -rf ipa
mkdir -p ipa/Payload &&
cp -R build/Debug-iphoneos/${APP} ipa/Payload/ &&
pushd ipa &&
zip -q --symlinks -r ${IPA} Payload/ &&
mkdir test/ &&
cp ${IPA} test &&
cd test &&
unzip -q ${IPA} &&
cd Payload/ &&
codesign --verify --verbose ${APP} &&
popd
open ipa/
RA_dist = (1.0 - RA_hysteresis) * RA_dist + RA_hysteresis * last_guide
I use a custom script to insert the current git commit into GeoNote, so when I get bug reports I have a better idea of which version the user is running. The script is as below:
import os
from Foundation import NSMutableDictionary
version = os.popen4("/sw/bin/git rev-parse --short HEAD")[1].read()
info = os.environ['INFOPLIST_FILE']
print info
plist = NSMutableDictionary.dictionaryWithContentsOfFile_(info)
print plist
plist['revision'] = version[:-1]
plist.writeToFile_atomically_(info, 1)
This was added as a Run Script Build Phrase. The problem I noticed was that the commit short hash inserted into Info.plist was always one commit behind. After some head scratching, I realised this was because by default the new build phrase is inserted last, and the order matters! It isn't actually possible to reorder build phrases by drag and dropping the children nodes around. You have to do a head-insert by dragging a child to the parent, which inserts it at the top.
Voila, problem solved.
Cheers,void floatPrint(float f, int places=6)
{
int _d;
if (f < 0)
{
Serial.print("-");
f*=-1;
}
_d = (int)f;
if (!places)
{
return;
}
Serial.print(_d, DEC);
Serial.print('.');
while(places--)
{
f-=_d;
f*=10;
_d = (int)f;
Serial.print(_d, DEC);
}
}
void floatPrintln(double f, int places=6)
{
floatPrint(f, places);
Serial.println();
}
Why another float print function? The ones I found wasn't too nice, one of which required long integers. Yuck. It was also fun, and now I know where to look for one in the future :P
If one source file is sourcecode.c.objc and another is sourcecode.cpp.objcpp, you will have problems if you try to call function defined in one file from the other. The resolve this either make them the same source type, or follow this guide.
This drove me nutty because the template I was working off has code set to sourcecode.cpp.objcpp, but XCode adds new classes as sourcecode.c.objc! To check the file type, use "Get Info" in the source file's context menu.
Cheers,
Steve
I generated a gpg keypair for myself today, and I was looking for a fairly safe way to back it up. I don't particularly trust DVD/CDs, and keeping it on flash is even more worrying. I wanted a means of backup I can see and touch.
Paperbak would be great if it was ported to something not windows. Since it wasn't, I settled on QR Code.
Thus qrbackup was born. It will base32 encode a file, then encode it into QR codes using google chart service.
I have tested it from backup to restoration, and it works. YMMV, more instructions available after the jump.
Cheers,
Steve
P.S. Pardon my python.
Annoyingly git-daemon-run requires runit on debian, but runit will fail to install properly in a debian vserver because it doesn't have init.
One solution is to reconfigure vserver to use plain init style.
However I didn't want to this because I don't want to take down my vserver just yet. So here is the required line for /etc/inetd.conf:
git stream tcp nowait nobody /usr/bin/git git daemon --inetd /var/git-repos
Cheers,
Steve
rkhunter often warns on file property changes after upgrade and such, and sometimes you just aren't sure whether it is due to recent upgrades, or because you really were compromised. The following script was written to compare the checksum of all files rkhunter warns about against the originals in a debian repository.
The latest version of this is available in my script.git respos.
#!/bin/bash
desc="
This script will verify whether files for which rkhunter has logged a
warning for is still valid. It does this by finding which debian package
it came out of, and downloads them, unpacks them, then checks
the checksums.
Run it by supplying a rkhunter log file as first argument
"
HASHER="sha256sum"
IFS="
"
function find_suspect_files
{
echo "parsing $1 for suspect files" 1>&2
grep -1 Warning "$1"| grep File | sed 's|.*File: ||'
}
function find_packages
{
echo "finding packages" 1>&2
for suspect_file in $1
do
package=$(dpkg -S $suspect_file|awk '{print $1}'|sed 's/.$//')
echo "suspect file $suspect_file found in $package" 1>&2
echo $package
done
}
function make_aptitude_args
{
echo "generating aptitude arguments" 1>&2
for package in $1
do
version=$(dpkg -p $package | grep Version | awk '{print $2}')
echo $package=$version
done
}
function cleanup
{
echo "cleaning up"
popd
rm -rf tmp
exit $1
}
function setup
{
echo "setting up"
rm -rf tmp
mkdir tmp
pushd tmp
}
if [ $# -ne 1 ];
then
echo "$desc"
exit 1
fi
suspect_files=$(find_suspect_files "$1")
packages=$(find_packages "$suspect_files" | sort | uniq)
if [ -z "$packages" ];
then
echo "***WARNING****"
echo "No packages contain any of the suspect files!"
cleanup 1
fi
aptitude_args=$(make_aptitude_args "$packages")
setup
echo "downloading packages"
aptitude download $aptitude_args 1>/dev/null
if [ $? -ne 0 ];
then
echo "aptitude download failed!"
echo "args=$aptitude_args"
cleanup 1
fi
echo "unpacking"
for deb_file in *.deb
do
ar -x $deb_file
tar zxf data.tar.gz
rm -rf data.tar.gz control.tar.gz
done
for suspect_file in $suspect_files
do
if [ ! -f ".$suspect_file" ]
then
echo "***WARNING****"
echo "For some reason .$suspect_file does not exis!"
continue
fi
echo -n "verifying $suspect_file... "
suspect_sum=$($HASHER $suspect_file | awk '{print $1}')
clean_sum=$($HASHER ".$suspect_file" | awk '{print $1}')
if [ $suspect_sum == $clean_sum ];
then
echo "OK"
else
echo
echo "***WARNING****"
echo "Checksum mistmatch for $suspect_file!!!"
echo "Should be: $clean_sum"
echo "Is: $suspect_sum"
fi
done
cleanup
Cheers,
Steve
Got my hands on a ADJD-S371 on a breakout board from Sparkfun. The code below can be used to calibrate it. The most up-to-date version of the code can be found at my git repository under colour_sensor_calibration.
#include <Wire.h>
/* Calibrates the sensor to get white balance. Pin 2 should be connected
* to LED on the breakout board's LED pin. Calibration is done by placing the
* breakout board inside a pin pong ball, and using the built-in LED for
* illumination.
*
* Amount of light is measured by charging N capacitors for time X then
* reading off the voltage. (Conjecture)
*
* N is controlled by CAP_XXX
* T is controlled by INT_XXX
*
* Calibration is done by adjusting the integration time. No real reason.
*/
int _slave_id = 0x74;
int _LED_pin = 2;
uint8_t read_register(uint8_t addr)
{
i2c_send(_slave_id, &addr, 1);
return i2c_read(_slave_id);
}
void write_register_int(uint8_t addr, int data)
{
write_register_multibyte(addr, (uint8_t*)&data, 2);
}
/* write data[i] = register+i */
void write_register_multibyte(uint8_t addr, uint8_t* data, uint8_t bytes)
{
for (int i = 0; i < bytes; ++i)
{
write_register(addr+i, data[i]);
}
}
void write_register(uint8_t addr, uint8_t data)
{
uint8_t bytes[] = {addr, data};
i2c_send(_slave_id, bytes, 2);
}
uint8_t i2c_read(uint8_t id)
{
Wire.requestFrom(_slave_id, 1);
for(int i = 0; i<10 && !Wire.available(); ++i, delay(10));
if (!Wire.available())
{
return 11;
}
return Wire.receive();
}
void i2c_send(uint8_t id, uint8_t * data, uint8_t len)
{
Wire.beginTransmission(id);
for(int i = 0; i < len; ++i)
{
Wire.send(data[i]);
}
Wire.endTransmission();
}
#define CTRL 0x00
#define CONFIG 0x01
#define CAP_RED 0x06
#define CAP_GREEN 0x07
#define CAP_BLUE 0x08
#define INT_RED_LO 0x0A
#define INT_RED_HI 0x0B
#define INT_GREEN_LO 0x0C
#define INT_GREEN_HI 0x0D
#define INT_BLUE_LO 0x0E
#define INT_BLUE_HI 0x0F
#define DATA_RED_LO 0x40
#define DATA_RED_HI 0x41
#define DATA_GREEN_LO 0x42
#define DATA_GREEN_HI 0x43
#define DATA_BLUE_LO 0x44
#define DATA_BLUE_HI 0x45
int read_colour(uint8_t low_addr)
{
int lo = read_register(low_addr);
int hi = read_register(low_addr+1);
return lo|(hi<<8);
}
int red_integration_time = 2048;
int green_integration_time = 2048;
int blue_integration_time = 2048;
void set_integration_times(int red, int green, int blue)
{
write_register_int(INT_RED_LO, red);
write_register_int(INT_GREEN_LO, green);
write_register_int(INT_BLUE_LO, blue);
}
void setup()
{
pinMode(_LED_pin, OUTPUT);
digitalWrite(_LED_pin, HIGH);
Serial.begin(57600);
Wire.begin(); // join i2c bus (address optional for master)
Serial.println("Setting up...");
// datasheet says, wait 10us for hardware reset, so lets wait 1000
delay(1);
// gain setup
write_register(CAP_RED, 0x08);
write_register(CAP_GREEN, 0x08);
write_register(CAP_BLUE, 0x08);
set_integration_times(
red_integration_time,
green_integration_time,
blue_integration_time
);
// ask for colour data and offset
write_register(CTRL, 0x01);
}
void loop()
{
if (read_register(CTRL))
{
return;
}
int red, green, blue;
red = read_colour(DATA_RED_LO);
green = read_colour(DATA_GREEN_LO);
blue = read_colour(DATA_BLUE_LO);
Serial.println("--------------");
Serial.print("red: ");Serial.println(red);
Serial.print("green: ");Serial.println(green);
Serial.print("blue: ");Serial.println(blue);
Serial.print("red_int: ");Serial.println(red_integration_time);
Serial.print("green_int: ");Serial.println(green_integration_time);
Serial.print("blue_int: ");Serial.println(blue_integration_time);
// have to calibrate against blue, because LED has a blue bias otherwise
// it would look like blue has high gain than it does
float P = 1;
int reference = blue;
red_integration_time += (reference - red)*P;
green_integration_time += (reference - green)*P;
blue_integration_time += (reference - blue)*P;
// set the new integration times
set_integration_times(
red_integration_time,
green_integration_time,
blue_integration_time
);
// ask for colour data again
write_register(CTRL, 0x01);
}
Cheers,
Steve
Edit: it occurred to me what I have below is the basics of a thin facebook api wrapper. I might make it into one at some point in the future.
If you don't know what this does, you don't need it. Hope this helps some one. Written because pyfacebook is broken, always returns error 100.
FB_API_HOST="api.facebook.com"
FB_API_PATH="/restserver.php"
def get_session(auth_token):
params={
"api_key":FB_API_KEY,
"v":"1.0",
"auth_token":auth_token,
"generate_session_secret":1,
"method":"auth.getSession",
}
sorted = params.items()
sorted.sort(key=lambda x:x[0])
str_to_hash = ''.join(["%s=%s"%(x[0], x[1]) for x in sorted])
str_to_hash += FB_API_SECRET
md5 = hashlib.md5()
md5.update(str_to_hash)
sig = md5.hexdigest()
params["sig"] = sig
encoded_params = urllib.urlencode(params)
headers = {
"Content-type":"application/x-www-form-urlencoded",
}
conn = httplib.HTTPConnection(FB_API_HOST)
conn.request("POST", FB_API_PATH, encoded_params, headers)
response = conn.getresponse()
print response.status, response.reason
return response.read()
This Works For Me when I use it with iphone facebook-connect client:
[FBSession sessionForApplication:myApiKey getSessionProxy:myURL delegate:self];
Cheers,
Steve
Firstly, my usual approach of s/\s+$//g doesn't work since it eats up the newline too. s/\s+$/\n/g doesn't work either because the Replace: field in the find dialogue doesn't escape the \n.
Final solution is as shown: s/[ \t]+$//g
Cheers,
Steve