Mercurial > hg
annotate rust/rhg/src/main.rs @ 45923:ead435aa5294
rhg: add a `debugrequirements` subcommand
For now it only prints the contents of `.hg/requires` as-is, without parsing.
Differential Revision: https://phab.mercurial-scm.org/D9397
author | Simon Sapin <simon-commits@exyr.org> |
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date | Tue, 24 Nov 2020 15:11:58 +0100 |
parents | 33ded2d3f4fc |
children | ca3f73cc3cf4 |
rev | line source |
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1 extern crate log; |
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2 use clap::App; |
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3 use clap::AppSettings; |
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4 use clap::Arg; |
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5 use clap::ArgGroup; |
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6 use clap::ArgMatches; |
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7 use clap::SubCommand; |
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8 use hg::operations::DebugDataKind; |
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9 use std::convert::TryFrom; |
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10 |
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11 mod commands; |
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12 mod error; |
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14 mod ui; |
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15 use commands::Command; |
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16 use error::CommandError; |
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18 fn main() { | |
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19 env_logger::init(); |
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20 let app = App::new("rhg") |
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21 .setting(AppSettings::AllowInvalidUtf8) |
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22 .setting(AppSettings::SubcommandRequired) |
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23 .setting(AppSettings::VersionlessSubcommands) |
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24 .version("0.0.1") |
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25 .subcommand( |
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26 SubCommand::with_name("root").about(commands::root::HELP_TEXT), |
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27 ) |
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28 .subcommand( |
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29 SubCommand::with_name("files") |
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30 .arg( |
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31 Arg::with_name("rev") |
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32 .help("search the repository as it is in REV") |
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33 .short("-r") |
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34 .long("--revision") |
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35 .value_name("REV") |
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36 .takes_value(true), |
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37 ) |
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38 .about(commands::files::HELP_TEXT), |
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39 ) |
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40 .subcommand( |
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41 SubCommand::with_name("cat") |
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42 .arg( |
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43 Arg::with_name("rev") |
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44 .help("search the repository as it is in REV") |
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45 .short("-r") |
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46 .long("--revision") |
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47 .value_name("REV") |
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48 .takes_value(true), |
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49 ) |
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50 .arg( |
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51 clap::Arg::with_name("files") |
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52 .required(true) |
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53 .multiple(true) |
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54 .empty_values(false) |
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55 .value_name("FILE") |
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56 .help("Activity to start: activity@category"), |
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57 ) |
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58 .about(commands::cat::HELP_TEXT), |
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59 ) |
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60 .subcommand( |
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61 SubCommand::with_name("debugdata") |
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62 .about(commands::debugdata::HELP_TEXT) |
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63 .arg( |
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64 Arg::with_name("changelog") |
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65 .help("open changelog") |
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66 .short("-c") |
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67 .long("--changelog"), |
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68 ) |
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69 .arg( |
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70 Arg::with_name("manifest") |
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71 .help("open manifest") |
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72 .short("-m") |
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73 .long("--manifest"), |
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74 ) |
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75 .group( |
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76 ArgGroup::with_name("") |
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77 .args(&["changelog", "manifest"]) |
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78 .required(true), |
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79 ) |
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80 .arg( |
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81 Arg::with_name("rev") |
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82 .help("revision") |
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83 .required(true) |
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84 .value_name("REV"), |
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85 ), |
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86 ) |
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87 .subcommand( |
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88 SubCommand::with_name("debugrequirements") |
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89 .about(commands::debugrequirements::HELP_TEXT), |
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90 ); |
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91 |
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92 let matches = app.clone().get_matches_safe().unwrap_or_else(|err| { |
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93 let _ = ui::Ui::new().writeln_stderr_str(&err.message); |
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94 std::process::exit(exitcode::UNIMPLEMENTED_COMMAND) |
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95 }); |
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96 |
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97 let ui = ui::Ui::new(); |
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98 |
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99 let command_result = match_subcommand(matches, &ui); |
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100 |
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101 match command_result { |
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102 Ok(_) => std::process::exit(exitcode::OK), |
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103 Err(e) => { |
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104 let message = e.get_error_message_bytes(); |
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105 if let Some(msg) = message { |
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106 match ui.write_stderr(&msg) { |
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107 Ok(_) => (), |
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108 Err(_) => std::process::exit(exitcode::ABORT), |
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109 }; |
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110 }; |
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111 e.exit() |
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112 } |
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113 } |
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115 |
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116 fn match_subcommand( |
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117 matches: ArgMatches, |
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118 ui: &ui::Ui, |
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119 ) -> Result<(), CommandError> { |
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120 match matches.subcommand() { |
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121 ("root", _) => commands::root::RootCommand::new().run(&ui), |
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122 ("files", Some(matches)) => { |
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123 commands::files::FilesCommand::try_from(matches)?.run(&ui) |
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124 } |
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125 ("cat", Some(matches)) => { |
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126 commands::cat::CatCommand::try_from(matches)?.run(&ui) |
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127 } |
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128 ("debugdata", Some(matches)) => { |
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129 commands::debugdata::DebugDataCommand::try_from(matches)?.run(&ui) |
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130 } |
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131 ("debugrequirements", _) => { |
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132 commands::debugrequirements::DebugRequirementsCommand::new() |
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133 .run(&ui) |
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134 } |
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135 _ => unreachable!(), // Because of AppSettings::SubcommandRequired, |
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136 } |
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137 } |
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138 |
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139 impl<'a> TryFrom<&'a ArgMatches<'_>> for commands::files::FilesCommand<'a> { |
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140 type Error = CommandError; |
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141 |
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142 fn try_from(args: &'a ArgMatches) -> Result<Self, Self::Error> { |
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143 let rev = args.value_of("rev"); |
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144 Ok(commands::files::FilesCommand::new(rev)) |
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145 } |
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146 } |
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147 |
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148 impl<'a> TryFrom<&'a ArgMatches<'_>> for commands::cat::CatCommand<'a> { |
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149 type Error = CommandError; |
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150 |
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151 fn try_from(args: &'a ArgMatches) -> Result<Self, Self::Error> { |
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152 let rev = args.value_of("rev"); |
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153 let files = match args.values_of("files") { |
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154 Some(files) => files.collect(), |
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155 None => vec![], |
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156 }; |
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157 Ok(commands::cat::CatCommand::new(rev, files)) |
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158 } |
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159 } |
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160 |
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161 impl<'a> TryFrom<&'a ArgMatches<'_>> |
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162 for commands::debugdata::DebugDataCommand<'a> |
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163 { |
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164 type Error = CommandError; |
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165 |
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166 fn try_from(args: &'a ArgMatches) -> Result<Self, Self::Error> { |
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167 let rev = args |
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168 .value_of("rev") |
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169 .expect("rev should be a required argument"); |
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170 let kind = match ( |
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171 args.is_present("changelog"), |
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172 args.is_present("manifest"), |
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173 ) { |
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174 (true, false) => DebugDataKind::Changelog, |
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175 (false, true) => DebugDataKind::Manifest, |
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176 (true, true) => { |
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177 unreachable!("Should not happen since options are exclusive") |
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178 } |
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179 (false, false) => { |
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180 unreachable!("Should not happen since options are required") |
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181 } |
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182 }; |
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183 Ok(commands::debugdata::DebugDataCommand::new(rev, kind)) |
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184 } |
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185 } |