├── requirements.txt
├── process.py
├── README.md
└── playback.py


/requirements.txt:
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1 | GitPython==3.1.1
2 | whatthepatch==0.0.6
3 | keyboard==0.13.5
4 | 


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/process.py:
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 1 | #!/usr/bin/env python3
 2 | import sys
 3 | import git
 4 | import whatthepatch
 5 | 
 6 | # git hash-object -t tree /dev/null
 7 | EMPTY_TREE_SHA = "4b825dc642cb6eb9a060e54bf8d69288fbee4904"
 8 | 
 9 | repo = git.Repo(".")
10 | 
11 | file_name = sys.argv[1:]
12 | 
13 | commits = list(repo.iter_commits(paths=file_name))
14 | commits.reverse()
15 | 
16 | # first commit hack
17 | patch = commits[0].diff(EMPTY_TREE_SHA, file_name, True)[0].diff.decode("utf-8")
18 | for diff in whatthepatch.parse_patch(patch):
19 | 	for (i, d, t, _) in diff.changes:
20 | 		print((d, i, t))
21 | 
22 | print((commits[0].author.name, commits[0].message))
23 | 
24 | for i, c in enumerate(commits):
25 | 
26 | 	if i==0: continue
27 | 
28 | 	patch = commits[i-1].diff(c, file_name, True)[0].diff.decode("utf-8")
29 | 
30 | 	for diff in whatthepatch.parse_patch(patch):
31 | 		for (d, i, t, _) in diff.changes:
32 | 			if d==None or i==None:
33 | 				print((d, i, t))
34 | 
35 | 	print((c.author.name, c.message))
36 | 


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/README.md:
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 1 | # git-animate
 2 | 
 3 | Reads through a git repo and turns each commit into a series of vim keystrokes. The result is a pseudo-timelapse which almost looks like it's being typed out by a real person. Results vary depending on how frequent the commits were. It's also still only doing linewise diffs, so even a single byte change means the whole line is re-typed.
 4 | 
 5 | Only works on a single file. It is a good idea to rebase any merge commits so that the history reads as if it was written by a single author.
 6 | 
 7 | `pip install -r requirements.txt`
 8 | 
 9 | `process.py` reads the git history and outputs the patches as a list of tuples representing changes. If the repo contains multiple files, specify a filename to filter as an argument. E.g. `./process.py gbjs.htm > patches.txt` Multiple filenames can be provided if the file was renamed.
10 | 
11 | `playback.py` reads the patches file and turns it into keystrokes. Run the script and then focus on a new terminal window. Hold esc to abort.
12 | 
13 | These scripts were used to produce [this video](https://www.youtube.com/watch?v=i08S5qolgvc).
14 | 


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/playback.py:
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 1 | #!/usr/bin/env python3
 2 | import keyboard
 3 | import ast
 4 | import time, sys
 5 | 
 6 | filename=sys.argv[1]
 7 | 
 8 | # stop after this many commits
 9 | stopearly=9999
10 | 
11 | 
12 | 
13 | def vimcmd(x):
14 | 	keyboard.write(x)
15 | 	keyboard.press_and_release('enter')
16 | 
17 | def window(lr):
18 | 	keyboard.press_and_release('ctrl+w, '+lr)
19 | 
20 | time.sleep(3)
21 | 
22 | vimcmd("vim")
23 | time.sleep(0.3)
24 | 
25 | # probably should have grabbed this from the repo 
26 | vimcmd(":set syntax=html")
27 | vimcmd(":set timeoutlen=1000 ttimeoutlen=0") #not sure if this helps
28 | 
29 | lines_added=0
30 | lines_removed=0
31 | current_line=0
32 | msgwindow=0
33 | 
34 | def navigate(to):
35 | 	global current_line
36 | 
37 | 	jump=abs(current_line-to)
38 | 
39 | 	vimcmd(":"+str(to))
40 | 	current_line=to
41 | 	if jump>3:
42 | 		keyboard.write('zz') # centre scroll
43 | 	if jump>15:
44 | 		vimcmd(':syntax sync fromstart')
45 | 		vimcmd(':')
46 | 
47 | 	time.sleep(min(0.3,jump*0.005))
48 | 
49 | 
50 | for line in open(filename):
51 | 	try:
52 | 		(d,i,t)= ast.literal_eval(line)
53 | 	except:
54 | 		try:
55 | 			(name,msg) = ast.literal_eval(line)
56 | 		except:
57 | 			continue;
58 | 		if (msgwindow==0):
59 | 			vimcmd(':set splitright')
60 | 			vimcmd(":vnew")
61 | 			keyboard.write('40')
62 | 			keyboard.press_and_release('ctrl+w')
63 | 			keyboard.write('|')
64 | 			vimcmd(':set linebreak')
65 | 			vimcmd(":set syntax=xml")
66 | 			vimcmd(':file commit_messages')
67 | 			msgwindow=1
68 | 		else:
69 | 			window('right')
70 | 		keyboard.write('i<'+name+'>: '+msg)
71 | 		keyboard.press_and_release('esc')
72 | 		window('left')
73 | 
74 | 		stopearly=stopearly-1
75 | 		if stopearly<=0: exit()
76 | 
77 | 		lines_added=0
78 | 		lines_removed=0
79 | 		continue;
80 | 
81 | 	if keyboard.is_pressed('esc'):
82 | 		exit()
83 | 
84 | 	time.sleep(0.01)
85 | 	if d==None: #insertion
86 | 		navigate(i)
87 | 		keyboard.write("O"+t, delay=0.001 )
88 | 		keyboard.press_and_release('esc')
89 | 		lines_added=1+lines_added
90 | 	elif i==None:
91 | 		navigate(d+lines_added-lines_removed)
92 | 
93 | 		keyboard.write("dd")
94 | 		lines_removed=1+lines_removed
95 | 
96 | 
97 | 


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