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byext.py
#! /usr/bin/python2.7 """Show file statistics by extension.""" from __future__ import print_function import os import sys class Stats: def __init__(self): self.stats = {} def statargs(self, args): for arg in args: if os.path.isdir(arg): self.statdir(arg) elif os.path.isfile(arg): self.statfile(arg) else: sys.stderr.write("Can't find %s\n" % arg) self.addstats("<???>", "unknown", 1) def statdir(self, dir): self.addstats("<dir>", "dirs", 1) try: names = sorted(os.listdir(dir)) except os.error as err: sys.stderr.write("Can't list %s: %s\n" % (dir, err)) self.addstats("<dir>", "unlistable", 1) return for name in names: if name.startswith(".#"): continue # Skip CVS temp files if name.endswith("~"): continue# Skip Emacs backup files full = os.path.join(dir, name) if os.path.islink(full): self.addstats("<lnk>", "links", 1) elif os.path.isdir(full): self.statdir(full) else: self.statfile(full) def statfile(self, filename): head, ext = os.path.splitext(filename) head, base = os.path.split(filename) if ext == base: ext = "" # E.g. .cvsignore is deemed not to have an extension ext = os.path.normcase(ext) if not ext: ext = "<none>" self.addstats(ext, "files", 1) try: f = open(filename, "rb") except IOError as err: sys.stderr.write("Can't open %s: %s\n" % (filename, err)) self.addstats(ext, "unopenable", 1) return data = f.read() f.close() self.addstats(ext, "bytes", len(data)) if b'\0' in data: self.addstats(ext, "binary", 1) return if not data: self.addstats(ext, "empty", 1) #self.addstats(ext, "chars", len(data)) lines = data.splitlines() self.addstats(ext, "lines", len(lines)) del lines words = data.split() self.addstats(ext, "words", len(words)) def addstats(self, ext, key, n): d = self.stats.setdefault(ext, {}) d[key] = d.get(key, 0) + n def report(self): exts = sorted(self.stats.keys()) # Get the column keys columns = {} for ext in exts: columns.update(self.stats[ext]) cols = sorted(columns.keys()) colwidth = {} colwidth["ext"] = max([len(ext) for ext in exts]) minwidth = 6 self.stats["TOTAL"] = {} for col in cols: total = 0 cw = max(minwidth, len(col)) for ext in exts: value = self.stats[ext].get(col) if value is None: w = 0 else: w = len("%d" % value) total += value cw = max(cw, w) cw = max(cw, len(str(total))) colwidth[col] = cw self.stats["TOTAL"][col] = total exts.append("TOTAL") for ext in exts: self.stats[ext]["ext"] = ext cols.insert(0, "ext") def printheader(): for col in cols: print("%*s" % (colwidth[col], col), end=" ") print() printheader() for ext in exts: for col in cols: value = self.stats[ext].get(col, "") print("%*s" % (colwidth[col], value), end=" ") print() printheader() # Another header at the bottom def main(): args = sys.argv[1:] if not args: args = [os.curdir] s = Stats() s.statargs(args) s.report() if __name__ == "__main__": main()
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