mirror of https://github.com/captn3m0/Scripts.git
106 lines
3.3 KiB
Python
Executable File
106 lines
3.3 KiB
Python
Executable File
#!/usr/bin/env python
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'''
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http://ubuntuforums.org/showthread.php?t=1154940&highlight=get_dependencies
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'''
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import sys
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from subprocess import Popen,PIPE,STDOUT
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__usage__='''
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compute_total_pkg_size.py emacs
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'''
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pkg=sys.argv[1]
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def report_lines(alist,max_len,vdiv,hline):
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'''
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alist is a list of tuples
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report_lines returns a list of strings
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'''
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result=[]
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svs=' '+vdiv+' '
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for row in alist:
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if row[0]=='-':
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line_string=hline
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else:
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data_justified=[str(elt).rjust(num) for elt,num in zip(row,max_len)]
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data_svs=svs.join(data_justified)
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line_list=[vdiv,data_svs,vdiv]
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line_string=' '.join(line_list)
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result.append(line_string)
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return result
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def report_table(alist,corner='+',hdiv='-',vdiv='|',header=True):
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max_len=max_col_len(alist)
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hline_l=[corner,
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corner.join([hdiv.ljust(max_num+2,hdiv)
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for max_num in max_len]),
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corner]
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hline=''.join(hline_l)
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result=report_lines(alist,max_len,vdiv,hline)
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if header:
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new_result=[hline,result[0],hline,]
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new_result.extend(result[1:])
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else:
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new_result=[hline,]
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new_result.extend(result)
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new_result.append(hline)
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result='\n'.join(new_result)+'\n'
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return result
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def max_col_len(alist):
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return [max([len(str(elt)) for elt in column]) for column in zip(*alist)]
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def find_installed():
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'''
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Returns a list of all the packages installed on the computer
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'''
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proc=Popen("dpkg --get-selections | awk '/install/{print $1}'",
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shell=True, stdout=PIPE, stderr=open('/dev/null'),)
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return proc.communicate()[0].split()
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def get_size(pkg):
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'''
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Returns (download size, installed size) in KiB
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'''
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cmd='apt-cache show %s'%pkg
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proc=Popen(cmd, shell=True, stdout=PIPE, )
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size=0
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install_size=0
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for line in proc.communicate()[0].split('\n'):
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if line.startswith('Size: '):
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size=line.split()[-1]
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elif line.startswith('Installed-Size: '):
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install_size=line.split()[-1]
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return (int(size)/1024,int(install_size))
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def get_dependencies(pkg):
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'''
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Returns all the (recursive) dependencies of a package
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'''
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cmd='apt-rdepends -s=DEPENDS %s'%pkg
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proc=Popen(cmd, shell=True, stdout=PIPE, )
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return proc.communicate()[0].strip().split('\n')
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deps=get_dependencies(pkg)
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installed_packages=find_installed()
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needed_packages=list(set(deps)-set(installed_packages))
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(sizes_dep,sizes_dep_installed)=zip(*[get_size(pkg) for pkg in deps])
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(sizes_needed,sizes_needed_installed)=zip(*[get_size(pkg) for pkg in needed_packages])
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data=[('Package (*=needed)','Download size (KiB)','Installed size (KiB)')]
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for apkg,size,install_size in zip(deps,sizes_dep,sizes_dep_installed):
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if apkg in needed_packages:
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data.append(('%s *'%apkg,size,install_size))
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else:
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data.append((apkg,size,install_size))
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print(report_table(data))
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data=[('','Sizes (KiB)')]
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data.append(('Total download size',sum(sizes_dep)))
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data.append(('Total installed size',sum(sizes_dep_installed)))
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data.append(('Total download size needed',sum(sizes_needed)))
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data.append(('Total installed size needed',sum(sizes_needed_installed)))
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print(report_table(data))
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