Makes your C++ code look a whole lot prettier. Usage: `./cpp_formatter.py (L|R|J) <width>`

cpp_formatter.py

#!/usr/bin/env python2

# "Justifies" your C++ code
# Warning: It might split some strings in half :P

import sys

inp = sys.stdin
out = sys.stdout

tp = sys.argv[1]
w = int(sys.argv[2])

l, wl = '', []
tt = inp.read()
wl = tt.strip().split("\n")
limit = 0

ll = [[0, []]]
for l in wl:
    if l.strip().startswith("#") or l.strip().startswith("//"):
        ll.append([len(l.split()) + len([c for c in l if not c.isspace()]), l.split()])
        ll.append([0, []])
        limit = max(limit, len(l))
        continue
    for wd in l.split():
        ln = len(wd)
        limit = max(limit, ln)
        if ll[-1][0] + ln > w:
            ll.append([ln+1, [wd]])
        else:
            ll[-1][0] += ln+1
            ll[-1][1].append(wd)

if tp == 'L':
    for le in ll:
        if le[0] == 0: continue
        out.write(" ".join(le[1]) + "\n")
if tp == 'R':
    for le in ll:
        if le[0] == 0: continue
        out.write(" " * (w - le[0] + 1) + " ".join(le[1]) + "\n")
if tp == 'J':
    if w < limit:
        sys.stderr.write("Warning: width %d is smaller than required limit %d\n" % (w, limit))
    for i, le in enumerate(ll):
        if le[0] == 0: continue
        if len(le[1]) == 1:
            out.write(le[1][0] + "\n")
            continue
        #if i == len(ll) - 1:
        #    out.write(" ".join(le[1]) + "\n")
        #    continue
        s, dv = "", (w - le[0] + len(le[1]))
        qu, rm = dv // (len(le[1]) - 1), dv % (len(le[1]) - 1)
        for i, wd in enumerate(le[1]):
            if i < rm:
                s += wd + " " * (qu+1)
            else:
                s += wd + " " * qu
        assert(len(s.strip()) == w)
        out.write(s.strip() + "\n")