Mercurial > treepkg > treepkg
annotate treepkg/util.py @ 494:31b64ebe4b42
determine upstream_version of a package
original patch by Andre
| author | Bjoern Ricks <bricks@intevation.de> |
|---|---|
| date | Wed, 13 Oct 2010 16:26:53 +0000 |
| parents | 058856954e2d |
| children | ca95be9d033a |
| rev | line source |
|---|---|
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1 # Copyright (C) 2007, 2008 by Intevation GmbH |
| 0 | 2 # Authors: |
| 3 # Bernhard Herzog <bh@intevation.de> | |
| 4 # | |
| 5 # This program is free software under the GPL (>=v2) | |
| 6 # Read the file COPYING coming with the software for details. | |
| 7 | |
| 8 """Collection of functions that didn't fit elsewhere""" | |
| 9 | |
| 10 import os | |
|
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11 import re |
| 0 | 12 import tempfile |
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13 import shutil |
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14 import fnmatch |
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15 import pwd |
| 394 | 16 import os.path |
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17 |
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18 try: |
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19 from hashlib import md5 as new_md5 |
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20 except ImportError: |
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21 # fall back to md5 for Python versions before 2.5 |
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22 from md5 import new as new_md5 |
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23 |
| 0 | 24 import run |
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25 from cmdexpand import cmdexpand |
| 0 | 26 |
| 27 | |
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28 def import_dotted_name(dotted_name): |
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29 module = __import__(dotted_name) |
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30 for name in dotted_name.split(".")[1:]: |
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31 module = getattr(module, name) |
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32 return module |
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33 |
| 0 | 34 def extract_value_for_key(lines, key): |
| 35 """Parses a sequence of strings for a key and returns the associated value | |
| 36 | |
| 37 The function determines the first string in lines that starts with | |
| 38 key. It returns the rest of the lines stripped of leading and | |
| 39 trailing whitespace. | |
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40 |
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41 If the key is not found in lines, the function returns None. |
| 0 | 42 """ |
| 43 for line in lines: | |
| 44 if line.startswith(key): | |
| 45 return line[len(key):].strip() | |
| 46 | |
| 47 def extract_lsm_version(lsm_file): | |
| 48 return extract_value_for_key(open(lsm_file), "Version:") | |
| 49 | |
| 50 def debian_changelog_version(changelog): | |
| 51 """Returns the newest version in a debian changelog.""" | |
| 52 output = run.capture_output(["dpkg-parsechangelog", "-l" + changelog]) | |
| 53 return extract_value_for_key(output.splitlines(), "Version:") | |
| 54 | |
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494
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55 def extract_cmakefile_version(cmakelist): |
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56 """ Returns the version mentioned in a CMakeList.txt """ |
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57 major = re.compile(r"VERSION_MAJOR\s+(\d+)", re.IGNORECASE) |
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58 minor = re.compile(r"VERSION_MINOR\s+(\d+)", re.IGNORECASE) |
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59 patch = re.compile(r"VERSION_PATCH\s+(\d+)", re.IGNORECASE) |
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60 version = "" |
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61 try: |
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62 for line in open(cmakelist): |
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63 major_match = major.match(line) |
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64 minor_match = minor.match(line) |
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65 patch_match = patch.match(line) |
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66 if major_match: |
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67 version = major_match.group(1) |
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68 if minor_match and version: |
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69 version += "." + minor_match.group(1) |
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70 if patch_match: |
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71 version += "." + patch_match.group(1) |
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72 except: pass |
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73 finally: |
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74 return version |
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75 |
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76 def extract_configureac_version(configure_ac): |
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77 match = re.match(r"m4_define\(\[?my_version\]?, \[([^]]+)\]\)", |
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78 line) |
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79 if match: |
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80 return match.group(1) |
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81 |
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82 match = re.match(r"AC_INIT\([a-zA-Z_]+, ([0-9.]+)", line) |
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83 if match: |
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84 return match.group(1) |
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85 return "" |
| 0 | 86 |
| 87 def ensure_directory(directory): | |
| 88 """Creates directory and all its parents. | |
| 89 | |
| 90 Unlike os.makedirs, this function doesn't throw an exception | |
| 91 """ | |
| 92 if not os.path.isdir(directory): | |
| 93 os.makedirs(directory) | |
| 94 | |
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95 def listdir_abs(directory, pattern=None): |
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96 """Like os.listdir, but returns a list of absolute pathnames. |
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97 Optionally, a glob pattern can be given to restrict the names |
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98 returned by the function. |
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99 """ |
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100 filenames = os.listdir(directory) |
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101 if pattern is not None: |
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102 filenames = fnmatch.filter(filenames, pattern) |
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103 return [os.path.join(directory, filename) for filename in filenames] |
| 0 | 104 |
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105 def copytree(src, dst, symlinks=False): |
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106 """Recursively copy a directory tree using copy2(). |
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107 |
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108 This version is basically the same as the one in the shutil module |
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109 in the python standard library, however, it's OK if the destination |
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110 directory already exists. |
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111 |
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112 If the optional symlinks flag is true, symbolic links in the |
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113 source tree result in symbolic links in the destination tree; if |
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114 it is false, the contents of the files pointed to by symbolic |
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115 links are copied. |
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116 """ |
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117 names = os.listdir(src) |
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118 ensure_directory(dst) |
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119 errors = [] |
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120 for name in names: |
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121 srcname = os.path.join(src, name) |
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122 dstname = os.path.join(dst, name) |
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123 try: |
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124 if symlinks and os.path.islink(srcname): |
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125 linkto = os.readlink(srcname) |
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126 os.symlink(linkto, dstname) |
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127 elif os.path.isdir(srcname): |
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128 copytree(srcname, dstname, symlinks) |
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129 else: |
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130 shutil.copy2(srcname, dstname) |
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131 # XXX What about devices, sockets etc.? |
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132 except (IOError, os.error), why: |
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133 errors.append((srcname, dstname, why)) |
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134 if errors: |
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135 raise Error, errors |
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136 |
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137 |
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138 |
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139 def writefile(filename, contents, permissions=None): |
| 0 | 140 """Write contents to filename in an atomic way. |
| 141 | |
| 142 The contents are first written to a temporary file in the same | |
| 143 directory as filename. Once the contents are written, the temporary | |
| 144 file is closed and renamed to filename. | |
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145 |
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146 The optional parameter permissions, if given, are the permissions |
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147 for the new file. By default, or if the parameter is None, the |
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148 default permissions set by the tempfile.mkstemp are used which means |
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149 that the file is only readable for the user that created the file. |
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150 The permissions value is used as the second parameter to os.chmod. |
| 0 | 151 """ |
| 152 dirname, basename = os.path.split(filename) | |
| 153 fileno, tempname = tempfile.mkstemp("", basename, dirname) | |
| 154 try: | |
| 155 os.write(fileno, contents) | |
| 156 if not contents.endswith("\n"): | |
| 157 os.write(fileno, "\n") | |
| 158 os.close(fileno) | |
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159 if permissions is not None: |
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160 os.chmod(tempname, permissions) |
| 0 | 161 os.rename(tempname, filename) |
| 162 finally: | |
| 163 if os.path.exists(tempname): | |
| 164 os.remove(tempname) | |
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165 |
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166 |
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167 def replace_in_file(filename, pattern, replacement): |
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168 """Replace all occurrences of pattern in a file with replacement. |
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169 The file is modified in place. The search and replace is done with |
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170 the re.sub function. The pattern and replacement parameter are passed |
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171 through to re.sub unmodified, so their semantics are determined by |
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172 re.sub. |
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173 |
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174 The return value is True if the contents of the file have been |
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175 changed, False otherwise. |
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176 """ |
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177 contents = open(filename).read() |
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178 modified = re.sub(pattern, replacement, contents) |
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179 f = open(filename, "w") |
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180 f.write(modified) |
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181 f.close() |
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182 return modified != contents |
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172
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183 |
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184 |
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185 def filenameproperty(filename, dir_attr="base_dir"): |
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186 """Create a property for a directory or filename. |
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187 If the filename is relative it is interpreted as relative to the |
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188 value of the attribute of self named by dir_attr which defaults to |
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189 'base_dir'. |
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190 """ |
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191 def get(self): |
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192 return os.path.join(getattr(self, dir_attr), filename) |
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193 return property(get) |
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344
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194 |
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195 def getuser(): |
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196 """Returns the login name of the current user owning the proccess""" |
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197 return pwd.getpwuid(os.getuid())[0] |
| 394 | 198 |
| 199 def md5sum(filename): | |
| 200 """ calculates the md5sum of a file """ | |
| 201 if not os.path.isfile(filename): | |
| 202 raise RuntimeError("Could not create md5sum. File not found: %s" | |
| 203 % filename) | |
| 204 f = file(filename, 'rb') | |
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205 m = new_md5() |
| 394 | 206 while True: |
| 207 d = f.read(8096) | |
| 208 if not d: | |
| 209 break | |
| 210 m.update(d) | |
| 211 f.close() | |
| 212 return m.hexdigest() | |
| 213 | |
| 439 | 214 def remove_trailing_slashes(s): |
| 215 return s.rstrip("/") | |
| 216 | |
| 217 def expand_filename(filename): | |
| 218 """ | |
| 219 Applies os.path.expanduser and os.path.expandvars to filename | |
| 220 """ | |
| 221 return os.path.expandvars(os.path.expanduser(filename)) | |
| 222 | |
| 223 | |
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224 def compress_all_logs(reference_log, cmd="gzip -9 $logfile"): |
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225 """ |
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226 Takes the path of a reference log file and compresses all |
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227 files in same folder with the cmd command. |
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228 """ |
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229 if reference_log and os.path.exists(reference_log): |
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230 log_dir = os.path.isdir(reference_log) and \ |
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231 reference_log or os.path.dirname(reference_log) |
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232 for log_file in [os.path.join(log_dir, f) |
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233 for f in os.listdir(log_dir)]: |
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234 if os.path.isfile(log_file): |
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235 run.call(cmdexpand(cmd, logfile=log_file)) |