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pudquick revised this gist
Sep 3, 2013 . 1 changed file with 28 additions and 0 deletions.There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -1,5 +1,33 @@ import os, cmd, sys, re, glob, os.path, shutil, zipfile, tarfile, gzip # Credits # # The python code here was written by pudquick@github # # License # # This code is released under a standard MIT license. # # Permission is hereby granted, free of charge, to any person # obtaining a copy of this software and associated documentation files # (the "Software"), to deal in the Software without restriction, # including without limitation the rights to use, copy, modify, merge, # publish, distribute, sublicense, and/or sell copies of the Software, # and to permit persons to whom the Software is furnished to do so, # subject to the following conditions: # # The above copyright notice and this permission notice shall be # included in all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS # BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN # ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE # SOFTWARE. # You can skip over reading this class, if you like. # It's an implementation of mine of the bash parser in pure python # This has advantages over shlex, glob, and shlex->glob in that it expects -
Michael Lynn revised this gist
Nov 26, 2012 . 1 changed file with 1 addition and 1 deletion.There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -664,7 +664,7 @@ def do_ungzip(self, line, gunzip=False): elif os.path.basename(filename).lower().endswith('.tgz'): altpath = os.path.splitext(os.path.basename(filename))[0] + '.tar' else: altpath = os.path.basename(filename) + '_ungzipped' altpath = os.path.join(os.path.dirname(filename), altpath) location = (args[1:2] or [altpath])[0] if os.path.exists(location): -
Nov 26, 2012 . 1 changed file with 1 addition and 1 deletion.There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -1,4 +1,4 @@ import os, cmd, sys, re, glob, os.path, shutil, zipfile, tarfile, gzip # You can skip over reading this class, if you like. # It's an implementation of mine of the bash parser in pure python -
Nov 26, 2012 . 1 changed file with 54 additions and 4 deletions.There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -1,4 +1,4 @@ import os, cmd, sys, re, glob, os.path, shutil, zipfile, shutil, tarfile, gzip # You can skip over reading this class, if you like. # It's an implementation of mine of the bash parser in pure python @@ -589,7 +589,7 @@ def do_untar(self, line): return elif not os.path.exists(location): os.makedirs(location) try: tar = tarfile.open(filename, 'r') # check for a leading directory common to all files and remove it dirnames = [os.path.join(os.path.dirname(x.name), '') for x in tar.getmembers() if x.name != 'pax_global_header'] @@ -626,12 +626,62 @@ def do_untar(self, line): with open(fn, 'wb') as destfp: shutil.copyfileobj(fp, destfp) fp.close() except Exception: tar.close() print "untar: %s: tar file is corrupt" % args[0] return finally: tar.close() def do_ungzip(self, line, gunzip=False): """ungzip a gzip archive""" # filename with optional output filename fname = 'ungzip' if gunzip: fname = 'gunzip' args = self.bash(line) if args is None: return elif not (1 <= len(args) <= 2): print "%s: Usage: %s file [outfile]" % (fname, fname) else: filename = os.path.abspath(args[0]) if not os.path.isfile(filename): print "%s: %s: No such file" % (fname,args[0]) else: # '\x1f\x8b\x08' magic marker check f = open(filename, 'rb') try: gz_check = f.read(3) except Exception: gz_check = '' finally: f.close() if gz_check != '\x1f\x8b\x08': print "%s: %s: does not appear to be a gzip file" % (fname,args[0]) else: if (os.path.basename(filename).lower().endswith('.gz') or os.path.basename(filename).lower().endswith('.gzip')): altpath = os.path.splitext(os.path.basename(filename))[0] elif os.path.basename(filename).lower().endswith('.tgz'): altpath = os.path.splitext(os.path.basename(filename))[0] + '.tar' else: altpath = os.path.basename(filename) + '_ungziped' altpath = os.path.join(os.path.dirname(filename), altpath) location = (args[1:2] or [altpath])[0] if os.path.exists(location): print "%s: %s: destination already exists" % (fname,os.path.basename(location)) return dirf = os.path.dirname(os.path.dirname(os.path.abspath(location))) try: if not os.path.exists(dirf): os.makedirs(dirf) with open(location, 'wb') as outfile: with gzip.open(filename, 'rb') as gzfile: outfile.write(gzfile.read()) except Exception: print "%s: %s: gzip file is corrupt" % (fname, args[0]) def do_gunzip(self, line): """ungzip a gzip archive""" self.do_ungzip(line, gunzip=True) def do_quit(self,line): self.did_quit = True def do_q(self,line): -
Nov 26, 2012 . 1 changed file with 156 additions and 76 deletions.There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -1,4 +1,4 @@ import os, cmd, sys, re, glob, os.path, shutil, zipfile, shutil, tarfile # You can skip over reading this class, if you like. # It's an implementation of mine of the bash parser in pure python @@ -278,39 +278,39 @@ def do_mv(self, line): print "cp: %s: No such directory" % self.pprint(dest) else: full_dest = os.path.abspath(dest).rstrip('/') + '/' for filef in files: full_file = os.path.abspath(filef).rstrip('/') file_name = os.path.basename(full_file) new_name = os.path.join(full_dest,file_name) if (not os.path.exists(full_file)): print "! Error: Skipped, missing -", self.pprint(filef) continue try: os.rename(full_file,new_name) except Exception: print "mv: %s: Unable to move" % self.pprint(filef) else: # Moving a single file to a (pre-existing) directory or a file filef = files[0] full_file = os.path.abspath(filef).rstrip('/') file_name = os.path.basename(full_file) full_dest = os.path.abspath(dest).rstrip('/') if (os.path.isdir(full_dest)): if (os.path.exists(full_file)): try: os.rename(full_file, full_dest + '/' + file_name) except: print "mv: %s: Unable to move" % self.pprint(filef) else: print "mv: %s: No such file" % self.pprint(filef) else: if (os.path.exists(full_file)): try: os.rename(full_file, full_dest) except: print "mv: %s: Unable to move" % self.pprint(filef) else: print "mv: %s: No such file" % self.pprint(filef) def do_cp(self, line): """copy files and directories""" args = self.bash(line) @@ -331,24 +331,24 @@ def do_cp(self, line): print "cp: %s: No such directory" % self.pprint(dest) else: full_dest = os.path.abspath(dest).rstrip('/') + '/' for filef in files: full_file = os.path.abspath(filef).rstrip('/') file_name = os.path.basename(full_file) new_name = os.path.join(full_dest,file_name) if (not os.path.exists(full_file)): print "! Error: Skipped, missing -", self.pprint(filef) continue try: if (os.path.isdir(full_file)): shutil.copytree(full_file,new_name) else: shutil.copy(full_file,new_name) except Exception: print "cp: %s: Unable to copy" % self.pprint(filef) else: # Copying a single file to a (pre-existing) directory or a file filef = files[0] full_file = os.path.abspath(filef).rstrip('/') file_name = os.path.basename(full_file) full_dest = os.path.abspath(dest).rstrip('/') new_name = os.path.join(full_dest,file_name) @@ -361,31 +361,31 @@ def do_cp(self, line): else: shutil.copy(full_file,new_name) except: print "cp: %s: Unable to copy" % self.pprint(filef) else: print "cp: %s: No such file" % self.pprint(filef) elif (os.path.exists(full_dest)): # Destination is a file if (os.path.exists(full_file)): try: shutil.copy(full_file,full_dest) except: print "cp: %s: Unable to copy" % self.pprint(filef) else: print "cp: %s: No such file" % self.pprint(filef) else: if (os.path.isdir(full_file)): # Source is a directory, destination should become a directory try: shutil.copytree(full_file,full_dest) except: print "cp: %s: Unable to copy" % self.pprint(filef) else: # Source is a file, destination should become a file try: shutil.copy(full_file,full_dest) except: print "cp: %s: Unable to copy" % self.pprint(filef) def do_rm(self, line): """remove one or more files/directories""" @@ -395,23 +395,23 @@ def do_rm(self, line): elif (len(args) < 1): print "rm: Usage: rm file_or_dir [...]" else: for filef in args: full_file = os.path.abspath(filef).rstrip('/') if not os.path.exists(filef): print "! Skipping: Not found -", self.pprint(filef) continue if (os.path.isdir(full_file)): try: shutil.rmtree(full_file, True) if (os.path.exists(full_file)): print "rm: %s: Unable to remove" % self.pprint(filef) except Exception: print "rm: %s: Unable to remove" % self.pprint(filef) else: try: os.remove(full_file) except Exception: print "rm: %s: Unable to remove" % self.pprint(filef) def do_cat(self, line): """print file""" args = self.bash(line) @@ -442,12 +442,12 @@ def do_ls(self, line): elif (not files): files = ['.'] files_for_path = dict() for filef in files: full_file = os.path.abspath(filef).rstrip('/') file_name = os.path.basename(full_file) dir_name = os.path.dirname(full_file).rstrip('/') if (not os.path.exists(full_file)): print "! Error: Skipped, missing -", self.pprint(filef) continue if (os.path.isdir(full_file)): # Need to add this as a key and all the files contained inside it @@ -473,14 +473,15 @@ def do_ls(self, line): print "\n" + self.pprint(path) + "/:" elif (not in_cwd): print self.pprint(path) + "/:" for filef in sorted(list(files_for_path[path])): full_file = os.path.abspath(filef).rstrip('/') file_name = os.path.basename(full_file) if (os.path.isdir(full_file)): print file_name + "/" else: print file_name + (" (%s)" % (self.sizeof_fmt(os.stat(full_file).st_size))) def do_unzip(self, line): """unzip a zip archive""" # filename with optional destination args = self.bash(line) if args is None: @@ -501,57 +502,136 @@ def do_unzip(self, line): finally: f.close() if pk_check != 'PK': print "unzip: %s: does not appear to be a zip file" % args[0] else: if (os.path.basename(filename).lower().endswith('.zip')): altpath = os.path.splitext(os.path.basename(filename))[0] else: altpath = os.path.basename(filename) + '_unzipped' altpath = os.path.join(os.path.dirname(filename), altpath) location = (args[1:2] or [altpath])[0] if (os.path.exists(location)) and not (os.path.isdir(location)): print "unzip: %s: destination is not a directory" % location return elif not os.path.exists(location): os.makedirs(location) zipfp = open(filename, 'rb') try: zipf = zipfile.ZipFile(zipfp) # check for a leading directory common to all files and remove it dirnames = [os.path.join(os.path.dirname(x), '') for x in zipf.namelist()] common_dir = os.path.commonprefix(dirnames or ['/']) # Check to make sure there aren't 2 or more sub directories with the same prefix if not common_dir.endswith('/'): common_dir = os.path.join(os.path.dirname(common_dir), '') for name in zipf.namelist(): data = zipf.read(name) fn = name if common_dir: if fn.startswith(common_dir): fn = fn.split(common_dir, 1)[-1] elif fn.startswith('/' + common_dir): fn = fn.split('/' + common_dir, 1)[-1] fn = fn.lstrip('/') fn = os.path.join(location, fn) dirf = os.path.dirname(fn) if not os.path.exists(dirf): os.makedirs(dirf) if fn.endswith('/'): # A directory if not os.path.exists(fn): os.makedirs(fn) else: fp = open(fn, 'wb') try: fp.write(data) finally: fp.close() except Exception: zipfp.close() print "unzip: %s: zip file is corrupt" % args[0] return finally: zipfp.close() def do_untar(self, line): """untar a tar archive""" # filename with optional destination args = self.bash(line) if args is None: return elif not (1 <= len(args) <= 2): print "untar: Usage: untar file [destination]" else: filename = os.path.abspath(args[0]) if not os.path.isfile(filename): print "untar: %s: No such file" % args[0] else: # 'ustar' magic marker check f = open(filename) try: f.seek(257) ustar_check = f.read(5) except Exception: ustar_check = '' finally: f.close() if ustar_check != 'ustar': print "untar: %s: does not appear to be a tar file" % args[0] else: if (os.path.basename(filename).lower().endswith('.tar')): altpath = os.path.splitext(os.path.basename(filename))[0] else: altpath = os.path.basename(filename) + '_untarred' altpath = os.path.join(os.path.dirname(filename), altpath) location = (args[1:2] or [altpath])[0] if (os.path.exists(location)) and not (os.path.isdir(location)): print "untar: %s: destination is not a directory" % location return elif not os.path.exists(location): os.makedirs(location) if True: tar = tarfile.open(filename, 'r') # check for a leading directory common to all files and remove it dirnames = [os.path.join(os.path.dirname(x.name), '') for x in tar.getmembers() if x.name != 'pax_global_header'] common_dir = os.path.commonprefix(dirnames or ['/']) if not common_dir.endswith('/'): common_dir = os.path.join(os.path.dirname(common_dir), '') for member in tar.getmembers(): fn = member.name if fn == 'pax_global_header': continue if common_dir: if fn.startswith(common_dir): fn = fn.split(common_dir, 1)[-1] elif fn.startswith('/' + common_dir): fn = fn.split('/' + common_dir, 1)[-1] fn = fn.lstrip('/') fn = os.path.join(location, fn) dirf = os.path.dirname(fn) if member.isdir(): # A directory if not os.path.exists(fn): os.makedirs(fn) elif member.issym(): # skip symlinks continue else: try: fp = tar.extractfile(member) except (KeyError, AttributeError): # invalid member, not necessarily a bad tar file continue if not os.path.exists(dirf): os.makedirs(dirf) with open(fn, 'wb') as destfp: shutil.copyfileobj(fp, destfp) fp.close() if False: tar.close() print "untar: %s: tar file is corrupt" % args[0] return if True: tar.close() def do_quit(self,line): self.did_quit = True def do_q(self,line): -
Nov 26, 2012 . 1 changed file with 93 additions and 10 deletions.There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -1,4 +1,4 @@ import os, cmd, sys, re, glob, os.path, shutil, zipfile # You can skip over reading this class, if you like. # It's an implementation of mine of the bash parser in pure python @@ -319,8 +319,12 @@ def do_cp(self, line): elif (not (len(args) >= 2)): print "cp: Usage: cp src [..] dest" else: if len(args) > 2: files = args[:-1] dest = args[-1] else: files = args[:1] dest = args[-1] if (len(files) > 1): # Copying multiple files, destination must be an existing directory. if (not os.path.isdir(dest)): @@ -370,11 +374,19 @@ def do_cp(self, line): else: print "cp: %s: No such file" % self.pprint(file) else: if (os.path.isdir(full_file)): # Source is a directory, destination should become a directory try: shutil.copytree(full_file,full_dest) except: print "cp: %s: Unable to copy" % self.pprint(file) else: # Source is a file, destination should become a file try: shutil.copy(full_file,full_dest) except: print "cp: %s: Unable to copy" % self.pprint(file) def do_rm(self, line): """remove one or more files/directories""" args = self.bash(line) @@ -468,7 +480,78 @@ def do_ls(self, line): print file_name + "/" else: print file_name + (" (%s)" % (self.sizeof_fmt(os.stat(full_file).st_size))) def do_unzip(self, line): # filename with optional destination args = self.bash(line) if args is None: return elif not (1 <= len(args) <= 2): print "unzip: Usage: unzip file [destination]" else: filename = os.path.abspath(args[0]) if not os.path.isfile(filename): print "unzip: %s: No such file" % args[0] else: # PK magic marker check f = open(filename) try: pk_check = f.read(2) except Exception: pk_check = '' finally: f.close() if pk_check != 'PK': print "unzip: %s: zip file is corrupt" % args[0] else: if (os.path.basename(filename).lower().endswith('.zip')): altpath = os.path.splitext(os.path.basename(filename))[0] else: altpath = os.path.basename(filename) + '_unzipped' altpath = os.path.join(os.path.dirname(filename), altpath) location = (args[1:2] or [altpath])[0] if (os.path.exists(location)) and not (os.path.isdir(location)): print "unzip: %s: destination is not a directory" % location return elif not os.path.exists(location): os.makedirs(location) zipfp = open(filename, 'rb') try: zip = zipfile.ZipFile(zipfp) # check for a leading directory common to all files and remove it dirnames = [os.path.join(os.path.dirname(x), '') for x in zip.namelist()] common_dir = os.path.commonprefix(dirnames or ['/']) # Check to make sure there aren't 2 or more sub directories with the same prefix if not common_dir.endswith('/'): common_dir = os.path.join(os.path.dirname(common_dir), '') for name in zip.namelist(): data = zip.read(name) fn = name if common_dir: if fn.startswith(common_dir): fn = fn.split(common_dir, 1)[-1] elif fn.startswith('/' + common_dir): fn = fn.split('/' + common_dir, 1)[-1] fn = fn.lstrip('/') fn = os.path.join(location, fn) dir = os.path.dirname(fn) if not os.path.exists(dir): os.makedirs(dir) if fn.endswith('/'): # A directory if not os.path.exists(fn): os.makedirs(fn) else: fp = open(fn, 'wb') try: fp.write(data) finally: fp.close() except Exception: zipfp.close() print "unzip: %s: zip file is corrupt" % args[0] return finally: zipfp.close() def do_quit(self,line): self.did_quit = True def do_q(self,line): @@ -488,4 +571,4 @@ def main(): shell.cmdloop() if __name__ == '__main__': main() -
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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,491 @@ import os, cmd, sys, re, glob, os.path, shutil # You can skip over reading this class, if you like. # It's an implementation of mine of the bash parser in pure python # This has advantages over shlex, glob, and shlex->glob in that it expects # the strings to represent files from the start. class BetterParser: def __init__(self): self.env_vars = {"$HOME": os.path.expanduser('~')} def parse(self, instr): instr = instr.rstrip('\r\n\t ') # Handle all three steps of parsing: # 1: Quoting # 2: Expansion (vars, ~, and glob.glob) # 3: Splitting if (not instr): return [] parse_array = [[],[]] parse_state = 0 # Stage 1: Process quotes last_block = [] for i,c in enumerate(instr): if (parse_state == 0): # Base state, look for quotes that haven't been escaped if (c == '\\'): # Switch to special mode to escape the next character last_block.append(i) parse_state += 3 elif (c == '"'): # Start double quoting last_block.append(i) parse_state = 1 elif (c == "'"): # Start single quoting last_block.append(i) parse_state = 2 else: parse_array[0].append(c) parse_array[1].append(0) elif (parse_state == 1): if (c not in '$\\"'): parse_array[0].append(c) parse_array[1].append(1) elif (c == '$'): parse_array[0].append(c) parse_array[1].append(0) elif (c == '\\'): last_block.append(i) parse_state += 3 else: last_block.pop() parse_state = 0 elif (parse_state == 2): if (c != "'"): parse_array[0].append(c) parse_array[1].append(1) else: last_block.pop() parse_state = 0 elif (3 <= parse_state <= 4): last_block.pop() parse_array[0].append(c) parse_array[1].append(parse_state + 0) parse_state -= 3 if (1 <= parse_state <= 2): raise SyntaxError("Unbalanced quotes at char %s: %s <--" % (last_block[-1],instr[:(last_block[-1]+1)])) elif (parse_state == 3): raise SyntaxError("Unfinished backslash escape at char %s: %s <--" % (last_block[-1],instr[:(last_block[-1]+1)])) elif (parse_state == 4): raise SyntaxError("Unfinished backslash escape within double quotes at char %s: %s <--" % (last_block[-1],instr[:(last_block[-1]+1)])) # State 1.5: Rebuild the parse array, evaluating escaped characters temp_array = [[],[]] escapes = {'t': '\t', 'r': '\r', 'n': '\n'} for i,c in enumerate(parse_array[0]): if (3 <= parse_array[1][i] <= 4): temp_array[0].append(escapes.get(c,c)) temp_array[1].append(1) else: temp_array[0].append(c) temp_array[1].append(parse_array[1][i] + 0) parse_array = temp_array # Stage 2: Perform expansions for i,c in enumerate(parse_array[0]): if ((c == '$') and (parse_array[1][i] == 0)): # Unquoted $ detected remainder = ''.join(parse_array[0][i:]) for var_name in self.env_vars.keys(): if remainder.startswith(var_name): # Found a variable that needs to be replaced # Blow out the variable name for j in range(i,len(var_name)+i): parse_array[0][j] = '' parse_array[1][j] = -1 # Insert the new value parse_array[0][i] = self.env_vars[var_name] parse_array[1][i] = 2 elif ((c == '~') and (parse_array[1][i] == 0)): # Unquoted ~ detected, make sure it's dir-ish if ((i == 0) and (len(parse_array[0]) == 1)): # Tilde by itself parse_array[0][i] = self.env_vars.get('$HOME', '/') parse_array[1][i] = 2 elif ((i == 0) and ((parse_array[0][i+1] == '/') or ((parse_array[0][i+1] == ' ') and (parse_array[1][i+1] == 0)))): # Tilde at start, followed by slash or non-escaped space parse_array[0][i] = self.env_vars.get('$HOME', '/') parse_array[1][i] = 2 elif ((len(parse_array[0]) == (i+1)) and ((parse_array[0][i-1] == ' ') and (parse_array[1][i-1] == 0))): # Tilde at end, preceded by a non-escaped space parse_array[0][i] = self.env_vars.get('$HOME', '/') parse_array[1][i] = 2 elif (((parse_array[0][i-1] == ' ') and (parse_array[1][i-1] == 0)) and ((parse_array[0][i+1] == '/') or ((parse_array[0][i+1] == ' ') and (parse_array[1][i+1] == 0)))): # Tilde not at start or end, preceded by a non-escaped space and followed by slash or non-escaped space parse_array[0][i] = self.env_vars.get('$HOME', '/') parse_array[1][i] = 2 # Stage 2.5: Rebuild the parse array, finalizing expansions temp_array = [[],[]] for i,c in enumerate(parse_array[0]): if (parse_array[1][i] == 2): for d in c: temp_array[0].append(d) temp_array[1].append(1) elif (parse_array[1][i] >= 0): temp_array[0].append(c) temp_array[1].append(parse_array[1][i] + 0) parse_array = temp_array # Stage 2.7: Wildcard globbing temp_groups = [[],[]] split_mode = 0 for i,c in enumerate(parse_array[0]): # Pre-split into words based on non-escaped whitespace if (not ((c in ' \t\n\r') and (parse_array[1][i] == 0))): if (split_mode == 0): split_mode = 1 temp_groups[0].append([c]) temp_groups[1].append([0 + parse_array[1][i]]) else: temp_groups[0][-1].append(c) temp_groups[1][-1].append(parse_array[1][i]) else: split_mode = 0 temp_groups[0].append([c]) temp_groups[1].append([0 + parse_array[1][i]]) temp_array = [[],[]] seen_first = False not_whitespace = False for i,chunk in enumerate(temp_groups[0]): # Iterate through words looking for unescaped glob characters glob_chunk = False for j,c in enumerate(chunk): if ((c in '*[]?') and (temp_groups[1][i][j] == 0)): # Found a chunk with unescaped glob character, but it's not the first chunk if (seen_first): glob_chunk = True if (not seen_first): if (not ((c in ' \t\n\r') and (temp_groups[1][i][j] == 0))): not_whitespace = True if (not_whitespace): seen_first = True not_whitespace = False if (glob_chunk): # Found a glob containing chunk glob_str = ''.join(chunk) matches = glob.glob(glob_str) if (matches): for match in matches: for c in match: temp_array[0].append(c) temp_array[1].append(1) temp_array[0].append(' ') temp_array[1].append(0) _ = temp_array[0].pop() _ = temp_array[1].pop() else: for j,c in enumerate(chunk): temp_array[0].append(c) temp_array[1].append(temp_groups[1][i][j]) else: for j,c in enumerate(chunk): temp_array[0].append(c) temp_array[1].append(temp_groups[1][i][j]) parse_array = temp_array # Stage 2.9: Rebuild the parse array, escaping remaining non-whitespace temp_array = [[],[]] for i,c in enumerate(parse_array[0]): if ((c not in ' \t\n\r') and (parse_array[1][i] == 0)): temp_array[0].append(c) temp_array[1].append(1) else: temp_array[0].append(c) temp_array[1].append(parse_array[1][i] + 0) parse_array = temp_array # Stage 3: Splitting split_mode = 0 final_value = [] for i,c in enumerate(parse_array[0]): if (parse_array[1][i] == 1): if (split_mode == 0): split_mode = 1 final_value.append('' + c) else: final_value[-1] += c else: split_mode = 0 return final_value class Shell(cmd.Cmd): def __init__(self): cmd.Cmd.__init__(self) self._bash = BetterParser() self._bash.env_vars['$HOME'] = os.path.expanduser('~/Documents') self.did_quit = False def bash(self, argstr): try: return self._bash.parse('. ' + argstr)[1:] except SyntaxError, e: print "Syntax Error: %s" % e return None def pprint(self, path): if (path.startswith(self._bash.env_vars['$HOME'])): return '~' + path.split(self._bash.env_vars['$HOME'],1)[-1] return path def do_pwd(self, line): """return working directory name""" print self.pprint(os.getcwd()) def do_cd(self, line): """change the current directory to DIR""" args = self.bash(line) if args is None: return elif args and len(args) == 1: try: os.chdir(args[0]) except Exception: print "cd: %s: No such directory" % line elif len(args) > 1: print "cd: Too many arguments" else: os.chdir(self._bash.env_vars['$HOME']) def sizeof_fmt(self, num): for x in ['bytes','KB','MB','GB']: if num < 1024.0: if (x == 'bytes'): return "%s %s" % (num, x) else: return "%3.1f %s" % (num, x) num /= 1024.0 return "%3.1f%s" % (num, 'TB') def do_mkdir(self, line): """make a directory""" args = self.bash(line) if args is None: return elif (len(args) == 1): target = args[0] if os.path.exists(target): print "mkdir: %s: File exists" % line else: try: os.mkdir(target) except Exception: print "mkdir: %s: Unable to create" % line else: print "mkdir: Usage: mkdir directory_name" def do_mv(self, line): """move files and directories""" args = self.bash(line) if args is None: return elif (not (len(args) >= 2)): print "mv: Usage: mv src [..] dest" else: dest = args[-1] files = args[0:-1] if (len(files) > 1): # Moving multiple files, destination must be an existing directory. if (not os.path.isdir(dest)): print "cp: %s: No such directory" % self.pprint(dest) else: full_dest = os.path.abspath(dest).rstrip('/') + '/' for file in files: full_file = os.path.abspath(file).rstrip('/') file_name = os.path.basename(full_file) new_name = os.path.join(full_dest,file_name) if (not os.path.exists(full_file)): print "! Error: Skipped, missing -", self.pprint(file) continue try: os.rename(full_file,new_name) except Exception: print "mv: %s: Unable to move" % self.pprint(file) else: # Moving a single file to a (pre-existing) directory or a file file = files[0] full_file = os.path.abspath(file).rstrip('/') file_name = os.path.basename(full_file) full_dest = os.path.abspath(dest).rstrip('/') if (os.path.isdir(full_dest)): if (os.path.exists(full_file)): try: os.rename(full_file, full_dest + '/' + file_name) except: print "mv: %s: Unable to move" % self.pprint(file) else: print "mv: %s: No such file" % self.pprint(file) else: if (os.path.exists(full_file)): try: os.rename(full_file, full_dest) except: print "mv: %s: Unable to move" % self.pprint(file) else: print "mv: %s: No such file" % self.pprint(file) def do_cp(self, line): """copy files and directories""" args = self.bash(line) if args is None: return elif (not (len(args) >= 2)): print "cp: Usage: cp src [..] dest" else: dest = args[-1] files = args[0:-1] if (len(files) > 1): # Copying multiple files, destination must be an existing directory. if (not os.path.isdir(dest)): print "cp: %s: No such directory" % self.pprint(dest) else: full_dest = os.path.abspath(dest).rstrip('/') + '/' for file in files: full_file = os.path.abspath(file).rstrip('/') file_name = os.path.basename(full_file) new_name = os.path.join(full_dest,file_name) if (not os.path.exists(full_file)): print "! Error: Skipped, missing -", self.pprint(file) continue try: if (os.path.isdir(full_file)): shutil.copytree(full_file,new_name) else: shutil.copy(full_file,new_name) except Exception: print "cp: %s: Unable to copy" % self.pprint(file) else: # Copying a single file to a (pre-existing) directory or a file file = files[0] full_file = os.path.abspath(file).rstrip('/') file_name = os.path.basename(full_file) full_dest = os.path.abspath(dest).rstrip('/') new_name = os.path.join(full_dest,file_name) if (os.path.isdir(full_dest)): # Destination is a directory already if (os.path.exists(full_file)): try: if (os.path.isdir(full_file)): shutil.copytree(full_file,new_name) else: shutil.copy(full_file,new_name) except: print "cp: %s: Unable to copy" % self.pprint(file) else: print "cp: %s: No such file" % self.pprint(file) elif (os.path.exists(full_dest)): # Destination is a file if (os.path.exists(full_file)): try: shutil.copy(full_file,full_dest) except: print "cp: %s: Unable to copy" % self.pprint(file) else: print "cp: %s: No such file" % self.pprint(file) else: # Destination should become a directory try: shutil.copytree(full_file,full_dest) except: print "cp: %s: Unable to copy" % self.pprint(file) def do_rm(self, line): """remove one or more files/directories""" args = self.bash(line) if args is None: return elif (len(args) < 1): print "rm: Usage: rm file_or_dir [...]" else: for file in args: full_file = os.path.abspath(file).rstrip('/') if not os.path.exists(file): print "! Skipping: Not found -", self.pprint(file) continue if (os.path.isdir(full_file)): try: shutil.rmtree(full_file, True) if (os.path.exists(full_file)): print "rm: %s: Unable to remove" % self.pprint(file) except Exception: print "rm: %s: Unable to remove" % self.pprint(file) else: try: os.remove(full_file) except Exception: print "rm: %s: Unable to remove" % self.pprint(file) def do_cat(self, line): """print file""" args = self.bash(line) if args is None: return elif (len(args) != 1): print "cat: Usage: cat file" else: target = args[0] if (not os.path.exists(target)): print "cat: %s: No such file" % line elif (os.path.isdir(target)): print "cat: %s: Is a directory" % line else: try: contents = "" with open(target, 'r') as f: contents = f.read() print contents print "" except Exception: print "cat: %s: Unable to access" % line def do_ls(self, line): """list directory contents""" files = self.bash(line) if files is None: return elif (not files): files = ['.'] files_for_path = dict() for file in files: full_file = os.path.abspath(file).rstrip('/') file_name = os.path.basename(full_file) dir_name = os.path.dirname(full_file).rstrip('/') if (not os.path.exists(full_file)): print "! Error: Skipped, missing -", self.pprint(file) continue if (os.path.isdir(full_file)): # Need to add this as a key and all the files contained inside it _dirs = files_for_path.get(full_file, set()) for new_file in os.listdir(full_file): _dirs.add(full_file.rstrip('/') + '/' + new_file.rstrip('/')) files_for_path[full_file] = _dirs else: _dirs = files_for_path.get(dir_name, set()) _dirs.add(full_file) files_for_path[dir_name] = _dirs # Iterate over the paths, in alphabetical order: paths = sorted(files_for_path.keys()) cwd = os.getcwd().rstrip('/') in_cwd = False if (cwd in paths): # Move cwd to the front, mark that it's present paths.remove(cwd) paths = [cwd] + paths in_cwd = True for i,path in enumerate(paths): if (i > 0): print "\n" + self.pprint(path) + "/:" elif (not in_cwd): print self.pprint(path) + "/:" for file in sorted(list(files_for_path[path])): full_file = os.path.abspath(file).rstrip('/') file_name = os.path.basename(full_file) if (os.path.isdir(full_file)): print file_name + "/" else: print file_name + (" (%s)" % (self.sizeof_fmt(os.stat(full_file).st_size))) def do_quit(self,line): self.did_quit = True def do_q(self,line): self.did_quit = True def do_exit(self,line): self.did_quit = True def do_logout(self,line): self.did_quit = True def do_logoff(self,line): self.did_quit = True def postcmd(self,stop,line): return self.did_quit def main(): shell = Shell() shell.prompt = '> ' shell.cmdloop() if __name__ == '__main__': main()
Michael Lynn
revised
this gist