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| 1 | +# Copyright (c) 2011 The Chromium Embedded Framework Authors. All rights |
| 2 | +# reserved. Use of this source code is governed by a BSD-style license that |
| 3 | +# can be found in the LICENSE file. |
| 4 | + |
| 5 | +from glob import iglob |
| 6 | +import os |
| 7 | +import shutil |
| 8 | +import sys |
| 9 | +import time |
| 10 | + |
| 11 | +def read_file(name, normalize = True): |
| 12 | + """ Read a file. """ |
| 13 | + try: |
| 14 | + f = open(name, 'r') |
| 15 | + # read the data |
| 16 | + data = f.read() |
| 17 | + if normalize: |
| 18 | + # normalize line endings |
| 19 | + data = data.replace("\r\n", "\n") |
| 20 | + return data |
| 21 | + except IOError, (errno, strerror): |
| 22 | + sys.stderr.write('Failed to read file '+name+': '+strerror) |
| 23 | + raise |
| 24 | + else: |
| 25 | + f.close() |
| 26 | + |
| 27 | +def write_file(name, data): |
| 28 | + """ Write a file. """ |
| 29 | + try: |
| 30 | + f = open(name, 'w') |
| 31 | + # write the data |
| 32 | + f.write(data) |
| 33 | + except IOError, (errno, strerror): |
| 34 | + sys.stderr.write('Failed to write file '+name+': '+strerror) |
| 35 | + raise |
| 36 | + else: |
| 37 | + f.close() |
| 38 | + |
| 39 | +def path_exists(name): |
| 40 | + """ Returns true if the path currently exists. """ |
| 41 | + return os.path.exists(name) |
| 42 | + |
| 43 | +def backup_file(name): |
| 44 | + """ Rename the file to a name that includes the current time stamp. """ |
| 45 | + move_file(name, name+'.'+time.strftime('%Y-%m-%d-%H-%M-%S')) |
| 46 | + |
| 47 | +def copy_file(src, dst, quiet = True): |
| 48 | + """ Copy a file. """ |
| 49 | + try: |
| 50 | + shutil.copy(src, dst) |
| 51 | + if not quiet: |
| 52 | + sys.stdout.write('Transferring '+src+' file.\n') |
| 53 | + except IOError, (errno, strerror): |
| 54 | + sys.stderr.write('Failed to copy file from '+src+' to '+dst+': '+strerror) |
| 55 | + raise |
| 56 | + |
| 57 | +def move_file(src, dst, quiet = True): |
| 58 | + """ Move a file. """ |
| 59 | + try: |
| 60 | + shutil.move(src, dst) |
| 61 | + if not quiet: |
| 62 | + sys.stdout.write('Moving '+src+' file.\n') |
| 63 | + except IOError, (errno, strerror): |
| 64 | + sys.stderr.write('Failed to move file from '+src+' to '+dst+': '+strerror) |
| 65 | + raise |
| 66 | + |
| 67 | +def copy_files(src_glob, dst_folder, quiet = True): |
| 68 | + """ Copy multiple files. """ |
| 69 | + for fname in iglob(src_glob): |
| 70 | + dst = os.path.join(dst_folder, os.path.basename(fname)) |
| 71 | + if os.path.isdir(fname): |
| 72 | + copy_dir(fname, dst, quiet) |
| 73 | + else: |
| 74 | + copy_file(fname, dst, quiet) |
| 75 | + |
| 76 | +def remove_file(name, quiet = True): |
| 77 | + """ Remove the specified file. """ |
| 78 | + try: |
| 79 | + if path_exists(name): |
| 80 | + os.remove(name) |
| 81 | + if not quiet: |
| 82 | + sys.stdout.write('Removing '+name+' file.\n') |
| 83 | + except IOError, (errno, strerror): |
| 84 | + sys.stderr.write('Failed to remove file '+name+': '+strerror) |
| 85 | + raise |
| 86 | + |
| 87 | +def copy_dir(src, dst, quiet = True): |
| 88 | + """ Copy a directory tree. """ |
| 89 | + try: |
| 90 | + remove_dir(dst, quiet) |
| 91 | + shutil.copytree(src, dst) |
| 92 | + if not quiet: |
| 93 | + sys.stdout.write('Transferring '+src+' directory.\n') |
| 94 | + except IOError, (errno, strerror): |
| 95 | + sys.stderr.write('Failed to copy directory from '+src+' to '+dst+': '+strerror) |
| 96 | + raise |
| 97 | + |
| 98 | +def remove_dir(name, quiet = True): |
| 99 | + """ Remove the specified directory. """ |
| 100 | + try: |
| 101 | + if path_exists(name): |
| 102 | + shutil.rmtree(name) |
| 103 | + if not quiet: |
| 104 | + sys.stdout.write('Removing '+name+' directory.\n') |
| 105 | + except IOError, (errno, strerror): |
| 106 | + sys.stderr.write('Failed to remove directory '+name+': '+strerror) |
| 107 | + raise |
| 108 | + |
| 109 | +def make_dir(name, quiet = True): |
| 110 | + """ Create the specified directory. """ |
| 111 | + try: |
| 112 | + if not path_exists(name): |
| 113 | + if not quiet: |
| 114 | + sys.stdout.write('Creating '+name+' directory.\n') |
| 115 | + os.makedirs(name) |
| 116 | + except IOError, (errno, strerror): |
| 117 | + sys.stderr.write('Failed to create directory '+name+': '+strerror) |
| 118 | + raise |
| 119 | + |
| 120 | +def get_files(search_glob): |
| 121 | + """ Returns all files matching the search glob. """ |
| 122 | + # Sort the result for consistency across platforms. |
| 123 | + return sorted(iglob(search_glob)) |
| 124 | + |
| 125 | +def read_version_file(file, args): |
| 126 | + """ Read and parse a version file (key=value pairs, one per line). """ |
| 127 | + lines = read_file(file).split("\n") |
| 128 | + for line in lines: |
| 129 | + parts = line.split('=', 1) |
| 130 | + if len(parts) == 2: |
| 131 | + args[parts[0]] = parts[1] |
| 132 | + |
| 133 | +def eval_file(src): |
| 134 | + """ Loads and evaluates the contents of the specified file. """ |
| 135 | + return eval(read_file(src), {'__builtins__': None}, None) |
| 136 | + |
| 137 | +def normalize_path(path): |
| 138 | + """ Normalizes the path separator to match the Unix standard. """ |
| 139 | + if sys.platform == 'win32': |
| 140 | + return path.replace('\\', '/') |
| 141 | + return path |
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