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make variable getting logic a little less horrible
author Jeff Hammel <jhammel@mozilla.com>
date Mon, 17 Jan 2011 14:32:07 -0800
parents b54898f7d8a9
children 7dbc3cdadffe
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1 MakeItSo!
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2 =========
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3
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4 A filesystem templating system for rapid deploy of projects
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5
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6 Boilerplate::
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7
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8 >>> import makeitso
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9 >>> import os
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10 >>> import shutil
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11 >>> import tempfile
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12 >>> from StringIO import StringIO
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14 Basic functionality::
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16 >>> example = os.path.join(here, 'example.txt')
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17 >>> template = makeitso.PolyTemplate([example], interactive=False)
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18 >>> template.missing()
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19 set(['name'])
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20 >>> template.substitute(dict(name='foo'))
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21 Hello foo
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23 Substitute to a buffer::
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24
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25 >>> buffer = StringIO()
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26 >>> template = makeitso.PolyTemplate([example], interactive=False)
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27 >>> template.substitute(dict(name='bar'), output=buffer)
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28 >>> buffer.getvalue().strip()
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29 'Hello bar'
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31 Substitute to a file::
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32
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33 >>> buffer = tempfile.mktemp()
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34 >>> template = makeitso.PolyTemplate([example], interactive=False)
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35 >>> template.substitute(dict(name='fleem'), buffer)
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36 >>> file(buffer).read().strip()
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37 'Hello fleem'
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38 >>> os.remove(buffer)
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40 Including a file::
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41
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42 >>> include_example = os.path.join(here, 'include-example.txt')
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43 >>> buffer = tempfile.mktemp()
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44 >>> template = makeitso.PolyTemplate([include_example], interactive=False)
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45 >>> template.substitute({}, buffer)
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46 >>> os.remove(buffer)
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48 Directory case::
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49
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50 >>> exampledir = os.path.join(here, 'directory-example')
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51 >>> tempdir = tempfile.mkdtemp()
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52 >>> template = makeitso.PolyTemplate([exampledir], interactive=False)
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53 >>> sorted(template.missing())
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54 ['bar', 'foo', 'subdir']
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55 >>> template.substitute(dict(foo='It', bar='life', subdir='mysubdir'), output=tempdir)
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56 >>> sorted(os.listdir(tempdir))
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57 ['foo.txt', 'mysubdir']
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58 >>> file(os.path.join(tempdir, 'foo.txt')).read().strip()
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59 'It is a wonderful life'
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60 >>> os.listdir(os.path.join(tempdir, 'mysubdir'))
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61 ['life.txt']
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62 >>> file(os.path.join(tempdir, 'mysubdir', 'life.txt')).read().strip()
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63 'It'
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64 >>> shutil.rmtree(tempdir)
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66 Mixed case::
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67
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68 >>> template = makeitso.PolyTemplate([example, exampledir], interactive=False)
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69 >>> variables = sorted(template.missing())
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70 >>> variables
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71 ['bar', 'foo', 'name', 'subdir']
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73 You need to provide output for mixing files and directory templates::
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74
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75 >>> variables = dict([(i, i.title()) for i in variables])
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76 >>> try:
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77 ... template.substitute(variables)
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78 ... except AssertionError, e:
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79 ... pass
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80 >>> e
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81 AssertionError()
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82
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83 Provide an output::
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84
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85 >>> template = makeitso.PolyTemplate([example, exampledir], interactive=False)
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86 >>> template.substitute(variables, tempdir)
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87 >>> sorted(os.listdir(tempdir))
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88 ['Subdir', 'example.txt', 'foo.txt']
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89 >>> shutil.rmtree(tempdir)
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91 Test API templates::
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92
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93 >>> from makeitso.template import MakeItSoTemplate, Variable
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94 >>> class MyTemplate(MakeItSoTemplate):
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95 ... name = 'foo'
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96 ... templates = ['example.txt']
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97 ... vars = [Variable(name='name', default='bar')]
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98 >>> buffer = tempfile.mktemp()
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99 >>> apitemplate = MyTemplate(interactive=False)
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100 >>> apitemplate.missing()
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101 set([])
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102 >>> apitemplate.substitute({}, buffer)
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103 >>> file(buffer).read().strip()
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104 'Hello bar'
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105 >>> os.remove(buffer)
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106
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107 If you dont use the defaults, then you will get a missing variable::
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108
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109 >>> apitemplate.usedefaults = False
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110 >>> apitemplate.missing()
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111 set(['name'])
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112 >>> try:
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113 ... apitemplate.substitute({})
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114 ... except Exception, e:
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115 ... pass
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116 >>> isinstance(e, makeitso.MissingVariablesException)
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117 True
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118
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119 Test CLI handler:
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120
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121 >>> from makeitso.cli import MakeItSoCLI
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122 >>> cli = MakeItSoCLI(MyTemplate)
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123 >>> buffer = tempfile.mktemp()
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124 >>> cli(buffer)
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125 >>> os.remove(buffer)
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126
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127 Test to make sure permissions are preserved. This won't work on windows::
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128
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129 >>> buffer = tempfile.mktemp()
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130 >>> f = file(buffer, 'w')
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131 >>> print >> f, '#!/bin/bash\necho foo'
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132 >>> f.close()
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133 >>> os.chmod(buffer, 0755)
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134 >>> uritemplate = makeitso.URITemplate(example, interactive=False)
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135 >>> uritemplate.substitute(dict(name='bar'), buffer)
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136 >>> ('%o' % os.stat(buffer).st_mode).endswith('755')
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137 True
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138 >>> os.remove(buffer)