Mercurial > projects > ldc
annotate gen/configfile.cpp @ 1108:d03814546977
Apply r1106 to x86-64 asm too
author | Frits van Bommel <fvbommel wxs.nl> |
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date | Thu, 12 Mar 2009 23:31:26 +0100 |
parents | b30fe7e1dbb9 |
children | 454f0c8acc4b |
rev | line source |
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1103
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1 #include <iostream> |
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2 #include <string> |
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3 #include <cassert> |
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4 |
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5 #include "llvm/System/Path.h" |
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6 |
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7 #include "libconfig.h++" |
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8 |
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9 #include "gen/configfile.h" |
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10 |
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11 #include "mars.h" |
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12 |
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13 namespace sys = llvm::sys; |
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14 |
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15 ConfigFile::ConfigFile() |
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16 { |
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17 cfg = new libconfig::Config; |
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18 } |
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19 |
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20 ConfigFile::~ConfigFile() |
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21 { |
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22 delete cfg; |
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23 } |
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24 |
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25 bool ConfigFile::read(const char* argv0, void* mainAddr, const char* filename) |
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26 { |
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27 |
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28 // try to find the config file |
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29 |
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30 // 1) try the current working dir |
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31 sys::Path p = sys::Path::GetCurrentDirectory(); |
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32 p.appendComponent(filename); |
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33 |
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34 if (!p.exists()) |
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35 { |
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36 // 2) try the user home dir |
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37 p = sys::Path::GetUserHomeDirectory(); |
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38 p.appendComponent(filename); |
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39 |
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40 if (!p.exists()) |
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41 { |
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42 // 3) try the install-prefix/etc |
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43 p = sys::Path(LDC_INSTALL_PREFIX); |
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44 p.appendComponent(filename); |
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45 |
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46 if (!p.exists()) |
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47 { |
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48 // 4) try next to the executable |
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49 p = sys::Path::GetMainExecutable(argv0, mainAddr); |
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50 p.eraseComponent(); |
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51 p.appendComponent(filename); |
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52 if (!p.exists()) |
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53 { |
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54 // 5) fail load cfg, users still have the DFLAGS environment var |
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55 std::cerr << "Error failed to locate the configuration file: " << filename << std::endl; |
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56 return false; |
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57 } |
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58 } |
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59 } |
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60 } |
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61 |
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62 try |
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63 { |
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64 // read the cfg |
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65 cfg->readFile(p.c_str()); |
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66 |
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67 // make sure there's a default group |
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68 if (!cfg->exists("default")) |
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69 { |
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70 std::cerr << "no default settings in configuration file" << std::endl; |
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71 return false; |
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72 } |
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73 libconfig::Setting& root = cfg->lookup("default"); |
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74 if (!root.isGroup()) |
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75 { |
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76 std::cerr << "default is not a group" << std::endl; |
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77 return false; |
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78 } |
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79 |
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80 // handle switches |
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81 if (root.exists("switches")) |
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82 { |
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83 libconfig::Setting& arr = cfg->lookup("default.switches"); |
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84 int len = arr.getLength(); |
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85 for (int i=0; i<len; i++) |
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86 { |
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87 const char* v = arr[i]; |
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88 switches.push_back(v); |
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89 } |
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90 } |
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91 |
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92 } |
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93 catch(libconfig::FileIOException& fioe) |
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94 { |
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95 std::cerr << "Error reading configuration file: " << filename << std::endl; |
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96 return false; |
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97 } |
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98 catch(libconfig::ParseException& pe) |
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99 { |
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100 std::cerr << "Error parsing configuration file: " << filename |
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101 << "(" << pe.getLine() << "): " << pe.getError() << std::endl; |
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102 return false; |
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103 } |
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104 catch(...) |
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105 { |
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106 std::cerr << "Unknown exception caught!" << std::endl; |
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107 return false; |
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108 } |
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109 |
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110 return true; |
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111 } |
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112 |