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121
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1 # ui.py - user interface bits for mercurial
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2 #
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3 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2, incorporated herein by reference.
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7
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8 from i18n import _
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9 import errno, getpass, os, socket, sys, tempfile, traceback
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10 import config, util, error
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11
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12 _booleans = {'1': True, 'yes': True, 'true': True, 'on': True,
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13 '0': False, 'no': False, 'false': False, 'off': False}
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14
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15 class ui(object):
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16 def __init__(self, src=None):
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17 self._buffers = []
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18 self.quiet = self.verbose = self.debugflag = self._traceback = False
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19 self._reportuntrusted = True
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20 self._ocfg = config.config() # overlay
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21 self._tcfg = config.config() # trusted
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22 self._ucfg = config.config() # untrusted
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23 self._trustusers = set()
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24 self._trustgroups = set()
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25
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26 if src:
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27 self._tcfg = src._tcfg.copy()
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28 self._ucfg = src._ucfg.copy()
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29 self._ocfg = src._ocfg.copy()
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30 self._trustusers = src._trustusers.copy()
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31 self._trustgroups = src._trustgroups.copy()
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32 self.fixconfig()
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33 else:
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34 # we always trust global config files
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35 for f in util.rcpath():
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36 self.readconfig(f, trust=True)
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37
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38 def copy(self):
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39 return self.__class__(self)
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40
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41 def _is_trusted(self, fp, f):
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42 st = util.fstat(fp)
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43 if util.isowner(st):
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44 return True
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45
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46 tusers, tgroups = self._trustusers, self._trustgroups
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47 if '*' in tusers or '*' in tgroups:
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48 return True
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49
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50 user = util.username(st.st_uid)
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51 group = util.groupname(st.st_gid)
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52 if user in tusers or group in tgroups or user == util.username():
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53 return True
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54
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55 if self._reportuntrusted:
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56 self.warn(_('Not trusting file %s from untrusted '
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57 'user %s, group %s\n') % (f, user, group))
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58 return False
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59
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60 def readconfig(self, filename, root=None, trust=False,
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61 sections=None, remap=None):
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62 try:
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63 fp = open(filename)
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64 except IOError:
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65 if not sections: # ignore unless we were looking for something
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66 return
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67 raise
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68
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69 cfg = config.config()
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70 trusted = sections or trust or self._is_trusted(fp, filename)
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71
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72 try:
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73 cfg.read(filename, fp, sections=sections, remap=remap)
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74 except error.ConfigError, inst:
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75 if trusted:
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76 raise
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77 self.warn(_("Ignored: %s\n") % str(inst))
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78
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79 if trusted:
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80 self._tcfg.update(cfg)
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81 self._tcfg.update(self._ocfg)
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82 self._ucfg.update(cfg)
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83 self._ucfg.update(self._ocfg)
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84
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85 if root is None:
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86 root = os.path.expanduser('~')
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87 self.fixconfig(root=root)
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88
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89 def fixconfig(self, root=None):
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90 # translate paths relative to root (or home) into absolute paths
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91 root = root or os.getcwd()
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92 for c in self._tcfg, self._ucfg, self._ocfg:
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93 for n, p in c.items('paths'):
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94 if p and "://" not in p and not os.path.isabs(p):
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95 c.set("paths", n, os.path.normpath(os.path.join(root, p)))
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96
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97 # update ui options
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98 self.debugflag = self.configbool('ui', 'debug')
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99 self.verbose = self.debugflag or self.configbool('ui', 'verbose')
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100 self.quiet = not self.debugflag and self.configbool('ui', 'quiet')
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101 if self.verbose and self.quiet:
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102 self.quiet = self.verbose = False
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103 self._reportuntrusted = self.configbool("ui", "report_untrusted", True)
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104 self._traceback = self.configbool('ui', 'traceback', False)
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105
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106 # update trust information
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107 self._trustusers.update(self.configlist('trusted', 'users'))
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108 self._trustgroups.update(self.configlist('trusted', 'groups'))
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109
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110 def setconfig(self, section, name, value):
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111 for cfg in (self._ocfg, self._tcfg, self._ucfg):
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112 cfg.set(section, name, value)
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113 self.fixconfig()
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114
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115 def _data(self, untrusted):
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116 return untrusted and self._ucfg or self._tcfg
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117
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118 def configsource(self, section, name, untrusted=False):
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119 return self._data(untrusted).source(section, name) or 'none'
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120
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121 def config(self, section, name, default=None, untrusted=False):
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122 value = self._data(untrusted).get(section, name, default)
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123 if self.debugflag and not untrusted and self._reportuntrusted:
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124 uvalue = self._ucfg.get(section, name)
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125 if uvalue is not None and uvalue != value:
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126 self.debug(_("ignoring untrusted configuration option "
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127 "%s.%s = %s\n") % (section, name, uvalue))
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128 return value
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129
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130 def configbool(self, section, name, default=False, untrusted=False):
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131 v = self.config(section, name, None, untrusted)
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132 if v is None:
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133 return default
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134 if v.lower() not in _booleans:
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135 raise error.ConfigError(_("%s.%s not a boolean ('%s')")
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136 % (section, name, v))
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137 return _booleans[v.lower()]
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138
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139 def configlist(self, section, name, default=None, untrusted=False):
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140 """Return a list of comma/space separated strings"""
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141 result = self.config(section, name, untrusted=untrusted)
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142 if result is None:
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143 result = default or []
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144 if isinstance(result, basestring):
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145 result = result.replace(",", " ").split()
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146 return result
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147
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148 def has_section(self, section, untrusted=False):
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149 '''tell whether section exists in config.'''
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150 return section in self._data(untrusted)
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151
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152 def configitems(self, section, untrusted=False):
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153 items = self._data(untrusted).items(section)
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154 if self.debugflag and not untrusted and self._reportuntrusted:
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155 for k, v in self._ucfg.items(section):
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156 if self._tcfg.get(section, k) != v:
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157 self.debug(_("ignoring untrusted configuration option "
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158 "%s.%s = %s\n") % (section, k, v))
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159 return items
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160
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161 def walkconfig(self, untrusted=False):
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162 cfg = self._data(untrusted)
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163 for section in cfg.sections():
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164 for name, value in self.configitems(section, untrusted):
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165 yield section, name, str(value).replace('\n', '\\n')
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166
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167 def username(self):
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168 """Return default username to be used in commits.
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169
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170 Searched in this order: $HGUSER, [ui] section of hgrcs, $EMAIL
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171 and stop searching if one of these is set.
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172 If not found and ui.askusername is True, ask the user, else use
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173 ($LOGNAME or $USER or $LNAME or $USERNAME) + "@full.hostname".
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174 """
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175 user = os.environ.get("HGUSER")
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176 if user is None:
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177 user = self.config("ui", "username")
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178 if user is None:
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179 user = os.environ.get("EMAIL")
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180 if user is None and self.configbool("ui", "askusername"):
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181 user = self.prompt(_("enter a commit username:"), default=None)
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182 if user is None:
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183 try:
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184 user = '%s@%s' % (util.getuser(), socket.getfqdn())
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185 self.warn(_("No username found, using '%s' instead\n") % user)
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186 except KeyError:
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187 pass
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188 if not user:
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189 raise util.Abort(_("Please specify a username."))
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190 if "\n" in user:
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191 raise util.Abort(_("username %s contains a newline\n") % repr(user))
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192 return user
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193
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194 def shortuser(self, user):
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195 """Return a short representation of a user name or email address."""
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196 if not self.verbose: user = util.shortuser(user)
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197 return user
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198
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199 def _path(self, loc):
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200 p = self.config('paths', loc)
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201 if p and '%%' in p:
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202 self.warn('(deprecated \'%%\' in path %s=%s from %s)\n' %
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203 (loc, p, self.configsource('paths', loc)))
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204 p = p.replace('%%', '%')
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205 return p
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206
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207 def expandpath(self, loc, default=None):
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208 """Return repository location relative to cwd or from [paths]"""
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209 if "://" in loc or os.path.isdir(os.path.join(loc, '.hg')):
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210 return loc
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211
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212 path = self._path(loc)
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213 if not path and default is not None:
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214 path = self._path(default)
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215 return path or loc
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216
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217 def pushbuffer(self):
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218 self._buffers.append([])
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219
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220 def popbuffer(self):
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221 return "".join(self._buffers.pop())
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222
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223 def write(self, *args):
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224 if self._buffers:
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225 self._buffers[-1].extend([str(a) for a in args])
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226 else:
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227 for a in args:
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228 sys.stdout.write(str(a))
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229
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230 def write_err(self, *args):
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231 try:
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232 if not sys.stdout.closed: sys.stdout.flush()
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233 for a in args:
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234 sys.stderr.write(str(a))
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235 # stderr may be buffered under win32 when redirected to files,
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236 # including stdout.
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237 if not sys.stderr.closed: sys.stderr.flush()
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238 except IOError, inst:
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239 if inst.errno != errno.EPIPE:
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240 raise
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241
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242 def flush(self):
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243 try: sys.stdout.flush()
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244 except: pass
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245 try: sys.stderr.flush()
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246 except: pass
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247
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248 def interactive(self):
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249 i = self.configbool("ui", "interactive", None)
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250 if i is None:
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251 return sys.stdin.isatty()
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252 return i
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253
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254 def _readline(self, prompt=''):
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255 if sys.stdin.isatty():
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256 try:
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257 # magically add command line editing support, where
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258 # available
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259 import readline
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260 # force demandimport to really load the module
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261 readline.read_history_file
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262 # windows sometimes raises something other than ImportError
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263 except Exception:
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264 pass
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265 line = raw_input(prompt)
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266 # When stdin is in binary mode on Windows, it can cause
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267 # raw_input() to emit an extra trailing carriage return
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268 if os.linesep == '\r\n' and line and line[-1] == '\r':
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269 line = line[:-1]
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270 return line
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271
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272 def prompt(self, msg, choices=None, default="y"):
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273 """Prompt user with msg, read response, and ensure it matches
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274 one of the provided choices. choices is a sequence of acceptable
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275 responses with the format: ('&None', 'E&xec', 'Sym&link')
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276 No sequence implies no response checking. Responses are case
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277 insensitive. If ui is not interactive, the default is returned.
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278 """
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279 if not self.interactive():
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280 self.write(msg, ' ', default, "\n")
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281 return default
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282 while True:
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283 try:
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284 r = self._readline(msg + ' ')
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285 if not r:
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286 return default
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287 if not choices:
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288 return r
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289 resps = [s[s.index('&')+1].lower() for s in choices]
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290 if r.lower() in resps:
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291 return r.lower()
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292 else:
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293 self.write(_("unrecognized response\n"))
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294 except EOFError:
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295 raise util.Abort(_('response expected'))
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296
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297 def getpass(self, prompt=None, default=None):
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298 if not self.interactive(): return default
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299 try:
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300 return getpass.getpass(prompt or _('password: '))
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301 except EOFError:
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302 raise util.Abort(_('response expected'))
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303 def status(self, *msg):
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304 if not self.quiet: self.write(*msg)
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305 def warn(self, *msg):
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306 self.write_err(*msg)
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307 def note(self, *msg):
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308 if self.verbose: self.write(*msg)
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309 def debug(self, *msg):
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310 if self.debugflag: self.write(*msg)
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311 def edit(self, text, user):
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312 (fd, name) = tempfile.mkstemp(prefix="hg-editor-", suffix=".txt",
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313 text=True)
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314 try:
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315 f = os.fdopen(fd, "w")
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316 f.write(text)
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317 f.close()
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318
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319 editor = self.geteditor()
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320
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321 util.system("%s \"%s\"" % (editor, name),
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322 environ={'HGUSER': user},
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323 onerr=util.Abort, errprefix=_("edit failed"))
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324
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325 f = open(name)
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326 t = f.read()
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327 f.close()
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328 finally:
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329 os.unlink(name)
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330
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331 return t
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332
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333 def traceback(self):
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334 '''print exception traceback if traceback printing enabled.
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335 only to call in exception handler. returns true if traceback
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336 printed.'''
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337 if self._traceback:
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338 traceback.print_exc()
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339 return self._traceback
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340
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341 def geteditor(self):
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342 '''return editor to use'''
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343 return (os.environ.get("HGEDITOR") or
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344 self.config("ui", "editor") or
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345 os.environ.get("VISUAL") or
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346 os.environ.get("EDITOR", "vi"))
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