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@@ -1,96 +1,96 b'' | |||
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1 | 1 | # -*- coding: utf-8 -*- |
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2 | 2 | """ |
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3 | 3 | %store magic for lightweight persistence. |
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4 | 4 | |
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5 | 5 | Stores variables, aliases etc. in PickleShare database. |
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6 | 6 | |
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7 | 7 | $Id: iplib.py 1107 2006-01-30 19:02:20Z vivainio $ |
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8 | 8 | """ |
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9 | 9 | |
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10 | 10 | import IPython.ipapi |
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11 | 11 | ip = IPython.ipapi.get() |
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12 | 12 | |
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13 | 13 | import os,sys |
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14 | 14 | |
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15 | 15 | def restore_env(self): |
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16 | 16 | ip = self.getapi() |
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17 | 17 | env = ip.db.get('stored_env', {'set' : {}, 'add' : [], 'pre' : []}) |
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18 | 18 | for k,v in env['set'].items(): |
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19 | 19 | #print "restore alias",k,v # dbg |
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20 | 20 | os.environ[k] = v |
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21 | 21 | self.alias_table[k] = v |
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22 | 22 | for k,v in env['add']: |
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23 | 23 | os.environ[k] = os.environ.get(k,"") + v |
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24 | 24 | for k,v in env['pre']: |
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25 | 25 | os.environ[k] = v + os.environ.get(k,"") |
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26 | 26 | |
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27 | 27 | |
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28 | 28 | ip.set_hook('late_startup_hook', restore_env) |
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29 | 29 | |
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30 | 30 | def persist_env(self, parameter_s=''): |
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31 | 31 | """ Store environment variables persistently |
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32 | 32 | |
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33 | 33 | IPython remembers the values across sessions, which is handy to avoid |
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34 | 34 | editing startup files. |
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35 | 35 | |
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36 | 36 | %env - Show all environment variables |
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37 | 37 | %env VISUAL=jed - set VISUAL to jed |
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38 | 38 | %env PATH+=;/foo - append ;foo to PATH |
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39 | 39 | %env PATH+=;/bar - also append ;bar to PATH |
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40 |
%env PATH-=/wbin; - prepend /wbin; t |
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40 | %env PATH-=/wbin; - prepend /wbin; to PATH | |
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41 | 41 | %env -d VISUAL - forget VISUAL persistent val |
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42 | 42 | %env -p - print all persistent env modifications |
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43 | 43 | """ |
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44 | 44 | |
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45 | 45 | |
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46 | 46 | |
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47 | 47 | if not parameter_s.strip(): |
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48 | 48 | return os.environ.data |
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49 | 49 | |
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50 | 50 | ip = self.getapi() |
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51 | 51 | db = ip.db |
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52 | 52 | env = ip.db.get('stored_env', {'set' : {}, 'add' : [], 'pre' : []}) |
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53 | 53 | |
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54 | 54 | if parameter_s.startswith('-p'): |
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55 | 55 | return env |
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56 | 56 | |
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57 | 57 | elif parameter_s.startswith('-d'): |
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58 | 58 | parts = (parameter_s.split()[1], '<del>') |
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59 | 59 | |
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60 | 60 | else: |
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61 | 61 | parts = parameter_s.strip().split('=') |
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62 | 62 | |
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63 | 63 | if len(parts) == 2: |
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64 | 64 | k,v = parts |
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65 | 65 | |
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66 | 66 | if v == '<del>': |
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67 | 67 | if k in env['set']: |
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68 | 68 | del env['set'][k] |
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69 | 69 | env['add'] = [el for el in env['add'] if el[0] != k] |
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70 | 70 | env['pre'] = [el for el in env['pre'] if el[0] != k] |
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71 | 71 | |
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72 | 72 | print "Forgot '%s' (for next session)" % k |
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73 | 73 | |
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74 | 74 | elif k.endswith('+'): |
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75 | 75 | k = k[:-1] |
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76 | 76 | env['add'].append((k,v)) |
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77 | 77 | os.environ[k] += v |
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78 | 78 | print k,"after append =",os.environ[k] |
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79 | 79 | elif k.endswith('-'): |
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80 | 80 | k = k[:-1] |
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81 | 81 | env['pre'].append((k,v)) |
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82 | 82 | os.environ[k] = v + os.environ.get(k,"") |
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83 | 83 | print k,"after prepend =",os.environ[k] |
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84 | 84 | |
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85 | 85 | |
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86 | 86 | else: |
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87 | 87 | env['set'][k] = v |
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88 | 88 | print "Setting",k,"to",v |
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89 | 89 | os.environ[k] = os.environ.get(k,"") + v |
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90 | 90 | |
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91 | 91 | db['stored_env'] = env |
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92 | 92 | |
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93 | 93 | |
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94 | 94 | |
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95 | 95 | |
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96 | 96 | ip.expose_magic('env', persist_env) |
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