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annotate gen/configfile.cpp @ 1475:1f29cbc36bf5

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Fix memory leak in configfile.cpp...probably the only one in ldc!
author Kelly Wilson <wilsonk cpsc.ucalgary.ca>
date Thu, 04 Jun 2009 16:46:05 -0600
parents 8309ebaa23d5
children df0ffca8a636
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rev   line source
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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 #include <cstring>
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5
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6 #include "llvm/System/Path.h"
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7
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8 #include "libconfig.h++"
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9
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10 #include "gen/configfile.h"
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11
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12 #include "mars.h"
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13
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14 #if _WIN32
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15 #include <windows.h>
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16 #undef GetCurrentDirectory
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17 #endif
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18
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19 namespace sys = llvm::sys;
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20
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21 ConfigFile::ConfigFile()
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22 {
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23 cfg = new libconfig::Config;
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24 }
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25
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26 ConfigFile::~ConfigFile()
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27 {
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28 delete cfg;
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29 }
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30
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31 bool ConfigFile::read(const char* argv0, void* mainAddr, const char* filename)
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32 {
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33
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34 // try to find the config file
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35
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36 // 1) try the current working dir
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37 sys::Path p = sys::Path::GetCurrentDirectory();
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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 // 2) try the user home dir
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43 p = sys::Path::GetUserHomeDirectory();
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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 // 3) try the install-prefix/etc
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49 p = sys::Path(LDC_INSTALL_PREFIX);
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50 #if !_WIN32
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51 // Does Window need something similar?
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52 p.appendComponent("etc");
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53 #endif
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54 p.appendComponent(filename);
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55
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56 if (!p.exists())
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57 {
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58 #if _WIN32
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59 char buf[256];
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60 GetModuleFileName(NULL, buf, 256);
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61 p = buf;
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62 #else
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63 // 4) try next to the executable
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64 p = sys::Path::GetMainExecutable(argv0, mainAddr);
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65 #endif
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66 p.eraseComponent();
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67 p.appendComponent(filename);
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68 if (!p.exists())
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69 {
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70 // 5) fail load cfg, users still have the DFLAGS environment var
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71 std::cerr << "Error failed to locate the configuration file: " << filename << std::endl;
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72 return false;
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73 }
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74 }
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75 }
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76 }
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77
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78 try
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79 {
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80 // read the cfg
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81 cfg->readFile(p.c_str());
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82
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83 // make sure there's a default group
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84 if (!cfg->exists("default"))
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85 {
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86 std::cerr << "no default settings in configuration file" << std::endl;
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87 return false;
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88 }
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89 libconfig::Setting& root = cfg->lookup("default");
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90 if (!root.isGroup())
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91 {
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92 std::cerr << "default is not a group" << std::endl;
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93 return false;
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94 }
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95
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96 // handle switches
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97 if (root.exists("switches"))
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98 {
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99 std::string binpathkey = "%%ldcbinarypath%%";
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100 std::string binpath = sys::Path::GetMainExecutable(argv0, mainAddr).getDirname();
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101
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102 libconfig::Setting& arr = cfg->lookup("default.switches");
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103 int len = arr.getLength();
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104 for (int i=0; i<len; i++)
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105 {
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106 std::string v = arr[i];
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107
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108 // replace binpathkey with binpath
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109 size_t p;
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110 while (std::string::npos != (p = v.find(binpathkey)))
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111 v.replace(p, binpathkey.size(), binpath);
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112
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113 switches.push_back(strdup(v.c_str()));
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114 }
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115 }
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116
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117 }
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118 catch(libconfig::FileIOException& fioe)
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119 {
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120 std::cerr << "Error reading configuration file: " << filename << std::endl;
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121 return false;
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122 }
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123 catch(libconfig::ParseException& pe)
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124 {
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125 std::cerr << "Error parsing configuration file: " << filename
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126 << "(" << pe.getLine() << "): " << pe.getError() << std::endl;
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127 return false;
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128 }
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129 catch(...)
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130 {
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131 std::cerr << "Unknown exception caught!" << std::endl;
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diff changeset
132 return false;
b30fe7e1dbb9 - Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
diff changeset
133 }
b30fe7e1dbb9 - Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
diff changeset
134
b30fe7e1dbb9 - Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
diff changeset
135 return true;
b30fe7e1dbb9 - Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
diff changeset
136 }
b30fe7e1dbb9 - Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
diff changeset
137