Federico Baú | Google Scaper

The Author of the Background is Solen Feyissa

Google Pic Downloader

Summary

Credit

Demo

Stack

Programming Language

Python

Library

Magic Lybrary (C Extension)
Requests
Progressbar

Info

Python scraper tool for downloading in bulk images from Google by keywords.

How it works

Steps

Choose number of images.
Write some keywords, it downloads number of images per each keyword (max 3 keywords).
Press the download buttom to download the images.

Select an option

Source Code

import os
    import urllib
    import requests
    import progressbar
    from urllib.parse import quote
    import random
    from requests.exceptions import ReadTimeout
    import sys
    import os.path
    import ctypes.util
    import threading

from ctypes import c_char_p, c_int, c_size_t, c_void_p

default_magic_file = None

# =============================== libmagic.dll Imports =============================== #
    # NOTE: Cross Platform.

libmagic = None
    # NOTE: Find magic
    dll = ctypes.util.find_library('magic') \
    or ctypes.util.find_library('magic1') \
    or ctypes.util.find_library('cygmagic-1') \
    or ctypes.util.find_library('libmagic-1') \
    or ctypes.util.find_library('msys-magic-1')  # for MSYS2

if dll:
    libmagic = ctypes.CDLL(dll)

bin_dist_path = os.path.join(os.path.dirname(__file__), 'libmagic')
    if os.path.isdir(bin_dist_path):
    if sys.platform == 'darwin':
        dll = os.path.abspath(os.path.join(bin_dist_path, 'libmagic.dylib'))
    elif sys.platform == 'win32':
        dll = os.path.abspath(os.path.join(bin_dist_path, 'libmagic.dll'))
    default_magic_file = os.path.join(bin_dist_path, 'magic.mgc')

# This is necessary because find_library returns None if it doesn't find the library
    if dll:
    libmagic = ctypes.CDLL(dll)

import pkg_resources

if not libmagic or not libmagic._name:
    windows_dlls = ['magic1.dll','cygmagic-1.dll','libmagic-1.dll','msys-magic-1.dll']
    platform_to_lib = {'darwin': ['/opt/local/lib/libmagic.dylib',
                                '/usr/local/lib/libmagic.dylib'] +
                        glob.glob('/usr/local/Cellar/libmagic/*/lib/libmagic.dylib'),
                        'win32': windows_dlls,
                        'cygwin': windows_dlls,
                        'linux': [pkg_resources.resource_filename(__name__, "libmagic/libmagic.so.1")],
                    }
    platform = 'linux' if sys.platform.startswith('linux') else sys.platform
    for dll in platform_to_lib.get(platform, []):
        try:
            libmagic = ctypes.CDLL(dll)
            break
        except OSError:
            pass

if not libmagic or not libmagic._name:
    raise ImportError('failed to find libmagic.  Check your installation.')
    magic_t = ctypes.c_void_p

class MagicException(Exception):
    def __init__(self, message):
        super(MagicException, self).__init__(message)
        self.message = message

class Magic:
    def __init__(self, mime=False):
        self.flags = MAGIC_NONE
        if mime:
            self.flags |= MAGIC_MIME
        self.cookie = magic_open(self.flags)
        self.lock = threading.Lock()
        magic_load(self.cookie, None)

def from_buffer(self, buf):
        """
        Identify the contents of `buf`
        """
        with self.lock:
            try:
                return magic_buffer(self.cookie, buf).decode('utf-8')
            except MagicException as e:
                return self._handle509Bug(e)

def _handle509Bug(self, e):
        if e.message is None and (self.flags & MAGIC_MIME):
            return "application/octet-stream"
        else:
            raise e

# =============================== Error Handler =============================== #

def errorcheck_null(result, func, args):
    if result is None:
        err = magic_error(args[0])
        raise MagicException(err)
    else:
        return result

def errorcheck_negative_one(result, func, args):
    if result == -1:
        err = magic_error(args[0])
        raise MagicException(err)
    else:
        return result

magic_open = libmagic.magic_open
    magic_open.restype = magic_t
    magic_open.argtypes = [c_int]

magic_error = libmagic.magic_error
    magic_error.restype = c_char_p
    magic_error.argtypes = [magic_t]

_magic_file = libmagic.magic_file
    _magic_file.restype = c_char_p
    _magic_file.argtypes = [magic_t, c_char_p]
    _magic_file.errcheck = errorcheck_null

_magic_buffer = libmagic.magic_buffer
    _magic_buffer.restype = c_char_p
    _magic_buffer.argtypes = [magic_t, c_void_p, c_size_t]
    _magic_buffer.errcheck = errorcheck_null

def magic_buffer(cookie, buf):
    return _magic_buffer(cookie, buf, len(buf))

_magic_load = libmagic.magic_load
    _magic_load.restype = c_int
    _magic_load.argtypes = [magic_t, c_char_p]
    _magic_load.errcheck = errorcheck_negative_one

def magic_load(cookie, filename):
    return _magic_load(cookie, None)

################
    # ---> CONSTANTS
    ################

MAGIC_NONE = 0x000000  # No flags
    MAGIC_MIME = 0x000010  # Return a mime string
    MAGIC_ERROR = 0x000200 # Handle ENOENT etc as real errors

# NOTE: Current Google URL for seach Images. May change in the Future.
    # This can also be used
    # URL_ROOT = 'https://www.google.com/search?q='
    # URL_END = '&source=lnms&tbm=isch'

BASE_URL = 'https://www.google.com/search?q='
    GOOGLE_PICTURE_ID = '''&biw=1536&bih=674&tbm=isch&sxsrf=
    ACYBGNSXXpS6YmAKUiLKKBs6xWb4uUY5gA:
    1581168823770&source=lnms&sa=X&ved=
    0ahUKEwioj8jwiMLnAhW9AhAIHbXTBMMQ_AUI3QUoAQ'''

HEADERS = {
    'User-Agent':
    "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36"
    }
    SCANNER_COUNTER = None

def generate_search_url(keywords):
    keywords_to_search = [str(item).strip() for item in keywords.split(',')][0].split()
    keywords_count = len(keywords_to_search)
    return keywords_to_search, keywords_count

def generate_urls(search):
    """Generates a URLS in the correct format that brings to Google Image seearch page"""
    return [(BASE_URL+quote(word)+GOOGLE_PICTURE_ID) for word in search]

def check_webpage(url):
    checked_url = None
    try:
        request = requests.get(url, allow_redirects=True, timeout=10)
        if 'html' not in str(request.content):
            checked_url = request
    except ReadTimeout as err:
        print(err)
        pass
    return checked_url

def scan_webpage(webpage, extensions, timer):
    """Scans for pictures to download based on the keywords"""
    global SCANNER_COUNTER
    scanner = webpage.find
    found = False
    counter = 0
    while counter < timer:
        new_line = scanner('"https://', SCANNER_COUNTER + 1)  # How Many New lines
        SCANNER_COUNTER = scanner('"', new_line + 1)  # Ends of line
        buffor = scanner('\\', new_line + 1, SCANNER_COUNTER)
        if buffor != -1:
            object_raw = webpage[new_line + 1:buffor]
        else:
            object_raw = webpage[new_line + 1:SCANNER_COUNTER]
        if any(extension in object_raw for extension in extensions):
            found = True
            break
        counter += 1
    if found:
        object_ready = check_webpage(object_raw)
        return object_ready

class Downloader:
    """
        Main Downloader
        ::param extension:iterable of Files extensions
    """
    def __init__(self, extensions=None):
        if extensions:
            self._extensions = set(*[extensions])
        else:
            self._extensions = {'.jpg', '.png', '.ico', '.gif', '.jpeg'}
        self._directory = "images/"
        self.get_dirs = set()
        self._cached_urls = {}

@property
    def directory(self):
        return self._directory

@directory.setter
    def directory(self, value):
        self._directory = value

@property
    def cached_urls(self):
        return self._cached_urls

@property
    def extensions(self):
        return self._extensions

@extensions.setter
    def extensions(self, value):
        self._extensions = set([value])

def get_urls(self):
        return [self._cached_urls[url][1].url
                for url in self._cached_urls]

def _download_page(self, url):
        req = urllib.request.Request(url, headers=HEADERS)
        resp = urllib.request.urlopen(req)
        resp_data = str(resp.read())
        return resp_data

def search_urls(self, keywords, limit=1, verbose=False, cache=True, timer=None):
        cache_out = {}
        search, count = generate_search_url(keywords)
        urls_ = generate_urls(search)
        timer = timer if timer else 1000
        max_progressbar = count * (list(range(limit+1))[-1]+1)
        bar = progressbar.ProgressBar(maxval=max_progressbar,
                                    widgets=[progressbar.Bar('=', '[', ']'), ' ', progressbar.Percentage()]).start()
        i = 0
        while i < count:
            global SCANNER_COUNTER
            SCANNER_COUNTER = -1
            url = urls_[i]
            path = self.generate_dir(search[i])
            raw_html = self._download_page(url) # Download the entire page from the google Picture search
            for _ in range(limit+1):
                webpage_url = scan_webpage(raw_html, self._extensions, timer)
                if webpage_url:
                    file_name = Downloader.gen_fn(webpage_url, search[i])
                    cache_out[file_name] = [path, webpage_url]
                else:
                    pass
                bar.update(bar.currval + 1)
            i += 1
        bar.finish()
        if verbose:
            for url in cache_out:
                print(url)
        if cache:
            self._cached_urls = cache_out
        if not cache_out:
            print('==='*15 + ' < ' + 'NO PICTURES FOUND' + ' > ' + '==='*15)
        return cache_out

def download(self, keywords=None, limit=1, verbose=False, cache=True, download_cache=False, timer=None):
        if not download_cache:
            content = self.search_urls(keywords, limit, verbose, cache, timer)
        else:
            content = self._cached_urls
            if not content:
                print('Downloader has not URLs saved in Memory yet, run Downloader.search_urls to find pics first')
        for name, (path, url) in content.items():
            with open(os.path.join(path, name), 'wb') as file:
                file.write(url.content)
            if verbose:
                print(f'File Name={name}, Downloaded from {url.url}')
            else:
                pass

def _create_directories(self, name):
        dir_path = os.path.join(self._directory, name)
        try:
            if not os.path.exists(dir_path):
                os.makedirs(dir_path)
        except OSError:
            raise
        self.get_dirs.update([name])
        return

def generate_dir(self, dir_name):
        """Generate Path and Directory, also check if Directory exists or not """
        dir_name = dir_name.replace(" ", "_")
        if dir_name in self.get_dirs:
            pass
        else:
            self._create_directories(dir_name)
        return self._directory + dir_name

@staticmethod
    def gen_fn(check, name):
        """Create a file name string and generate a random identifiers otherwise won't import same pic twice"""
        id = str(hex(random.randrange(1000)))
        mime = Magic(mime=True)
        file_type = mime.from_buffer(check.content)
        file_extension = f'.{file_type.split("/")[1]}'
        file_name = str(name) + "_" + id[2:] + file_extension
        return file_name

def flush_cache(self):
        """Clear the Downloader instance cache"""
        self._cached_urls = set()