| 120 | } |
| 121 | |
| 122 | func processFile(filename string, useStdin bool) error { |
| 123 | var f *os.File |
| 124 | var err error |
| 125 | var fixlog bytes.Buffer |
| 126 | |
| 127 | if useStdin { |
| 128 | f = os.Stdin |
| 129 | } else { |
| 130 | f, err = os.Open(filename) |
| 131 | if err != nil { |
| 132 | return err |
| 133 | } |
| 134 | defer f.Close() |
| 135 | } |
| 136 | |
| 137 | src, err := ioutil.ReadAll(f) |
| 138 | if err != nil { |
| 139 | return err |
| 140 | } |
| 141 | |
| 142 | file, err := parser.ParseFile(fset, filename, src, parserMode) |
| 143 | if err != nil { |
| 144 | return err |
| 145 | } |
| 146 | |
| 147 | // Apply all fixes to file. |
| 148 | newFile := file |
| 149 | fixed := false |
| 150 | for _, fix := range fixes { |
| 151 | if allowed != nil && !allowed[fix.name] { |
| 152 | continue |
| 153 | } |
| 154 | for fix.f(newFile) { |
| 155 | fixed = true |
| 156 | fmt.Fprintf(&fixlog, " %s", fix.name) |
| 157 | |
| 158 | // AST changed. |
| 159 | // Print and parse, to update any missing scoping |
| 160 | // or position information for subsequent fixers. |
| 161 | newSrc, err := gofmtFile(newFile) |
| 162 | if err != nil { |
| 163 | return err |
| 164 | } |
| 165 | newFile, err = parser.ParseFile(fset, filename, newSrc, parserMode) |
| 166 | if err != nil { |
| 167 | if debug { |
| 168 | fmt.Printf("%s", newSrc) |
| 169 | report(err) |
| 170 | os.Exit(exitCode) |
| 171 | } |
| 172 | return err |
| 173 | } |
| 174 | |
| 175 | // All go fix rules are idempotent and only need to run once, except |
| 176 | // for the "unresolved" go fix rule. |
| 177 | if fix.name != "unresolved" { |
| 178 | break |
| 179 | } |