-
Notifications
You must be signed in to change notification settings - Fork 15
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge pull request #8 from hashicorp/f-tfignore
Add support for .terraformignore feature
- Loading branch information
Showing
7 changed files
with
386 additions
and
19 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,225 @@ | ||
| package slug | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "fmt" | ||
| "io" | ||
| "os" | ||
| "path/filepath" | ||
| "regexp" | ||
| "strings" | ||
| "text/scanner" | ||
| ) | ||
|
|
||
| func parseIgnoreFile(rootPath string) []rule { | ||
| // Look for .terraformignore at our root path/src | ||
| file, err := os.Open(filepath.Join(rootPath, ".terraformignore")) | ||
| defer file.Close() | ||
|
|
||
| // If there's any kind of file error, punt and use the default ignore patterns | ||
| if err != nil { | ||
| // Only show the error debug if an error *other* than IsNotExist | ||
| if !os.IsNotExist(err) { | ||
| fmt.Fprintf(os.Stderr, "Error reading .terraformignore, default exclusions will apply: %v \n", err) | ||
| } | ||
| return defaultExclusions | ||
| } | ||
| return readRules(file) | ||
| } | ||
|
|
||
| func readRules(input io.Reader) []rule { | ||
| rules := defaultExclusions | ||
| scanner := bufio.NewScanner(input) | ||
| scanner.Split(bufio.ScanLines) | ||
|
|
||
| for scanner.Scan() { | ||
| pattern := scanner.Text() | ||
| // Ignore blank lines | ||
| if len(pattern) == 0 { | ||
| continue | ||
| } | ||
| // Trim spaces | ||
| pattern = strings.TrimSpace(pattern) | ||
| // Ignore comments | ||
| if pattern[0] == '#' { | ||
| continue | ||
| } | ||
| // New rule structure | ||
| rule := rule{} | ||
| // Exclusions | ||
| if pattern[0] == '!' { | ||
| rule.excluded = true | ||
| pattern = pattern[1:] | ||
| } | ||
| // If it is a directory, add ** so we catch descendants | ||
| if pattern[len(pattern)-1] == os.PathSeparator { | ||
| pattern = pattern + "**" | ||
| } | ||
| // If it starts with /, it is absolute | ||
| if pattern[0] == os.PathSeparator { | ||
| pattern = pattern[1:] | ||
| } else { | ||
| // Otherwise prepend **/ | ||
| pattern = "**" + string(os.PathSeparator) + pattern | ||
| } | ||
| rule.val = pattern | ||
| rule.dirs = strings.Split(pattern, string(os.PathSeparator)) | ||
| rules = append(rules, rule) | ||
| } | ||
|
|
||
| if err := scanner.Err(); err != nil { | ||
| fmt.Fprintf(os.Stderr, "Error reading .terraformignore, default exclusions will apply: %v \n", err) | ||
| return defaultExclusions | ||
| } | ||
| return rules | ||
| } | ||
|
|
||
| func matchIgnoreRule(path string, rules []rule) bool { | ||
| matched := false | ||
| path = filepath.FromSlash(path) | ||
| for _, rule := range rules { | ||
| match, _ := rule.match(path) | ||
|
|
||
| if match { | ||
| matched = !rule.excluded | ||
| } | ||
| } | ||
|
|
||
| if matched { | ||
| debug(true, path, "Skipping excluded path:", path) | ||
| } | ||
|
|
||
| return matched | ||
| } | ||
|
|
||
| type rule struct { | ||
| val string // the value of the rule itself | ||
| excluded bool // ! is present, an exclusion rule | ||
| dirs []string // directories of the rule | ||
| regex *regexp.Regexp // regular expression to match for the rule | ||
| } | ||
|
|
||
| func (r *rule) match(path string) (bool, error) { | ||
| if r.regex == nil { | ||
| if err := r.compile(); err != nil { | ||
| return false, filepath.ErrBadPattern | ||
| } | ||
| } | ||
|
|
||
| b := r.regex.MatchString(path) | ||
| debug(false, path, path, r.regex, b) | ||
| return b, nil | ||
| } | ||
|
|
||
| func (r *rule) compile() error { | ||
| regStr := "^" | ||
| pattern := r.val | ||
| // Go through the pattern and convert it to a regexp. | ||
| // Use a scanner to support utf-8 chars. | ||
| var scan scanner.Scanner | ||
| scan.Init(strings.NewReader(pattern)) | ||
|
|
||
| sl := string(os.PathSeparator) | ||
| escSL := sl | ||
| if sl == `\` { | ||
| escSL += `\` | ||
| } | ||
|
|
||
| for scan.Peek() != scanner.EOF { | ||
| ch := scan.Next() | ||
| if ch == '*' { | ||
| if scan.Peek() == '*' { | ||
| // is some flavor of "**" | ||
| scan.Next() | ||
|
|
||
| // Treat **/ as ** so eat the "/" | ||
| if string(scan.Peek()) == sl { | ||
| scan.Next() | ||
| } | ||
|
|
||
| if scan.Peek() == scanner.EOF { | ||
| // is "**EOF" - to align with .gitignore just accept all | ||
| regStr += ".*" | ||
| } else { | ||
| // is "**" | ||
| // Note that this allows for any # of /'s (even 0) because | ||
| // the .* will eat everything, even /'s | ||
| regStr += "(.*" + escSL + ")?" | ||
| } | ||
| } else { | ||
| // is "*" so map it to anything but "/" | ||
| regStr += "[^" + escSL + "]*" | ||
| } | ||
| } else if ch == '?' { | ||
| // "?" is any char except "/" | ||
| regStr += "[^" + escSL + "]" | ||
| } else if ch == '.' || ch == '$' { | ||
| // Escape some regexp special chars that have no meaning | ||
| // in golang's filepath.Match | ||
| regStr += `\` + string(ch) | ||
| } else if ch == '\\' { | ||
| // escape next char. Note that a trailing \ in the pattern | ||
| // will be left alone (but need to escape it) | ||
| if sl == `\` { | ||
| // On windows map "\" to "\\", meaning an escaped backslash, | ||
| // and then just continue because filepath.Match on | ||
| // Windows doesn't allow escaping at all | ||
| regStr += escSL | ||
| continue | ||
| } | ||
| if scan.Peek() != scanner.EOF { | ||
| regStr += `\` + string(scan.Next()) | ||
| } else { | ||
| regStr += `\` | ||
| } | ||
| } else { | ||
| regStr += string(ch) | ||
| } | ||
| } | ||
|
|
||
| regStr += "$" | ||
| re, err := regexp.Compile(regStr) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| r.regex = re | ||
| return nil | ||
| } | ||
|
|
||
| /* | ||
| Default rules as they would appear in .terraformignore: | ||
| .git/ | ||
| .terraform/ | ||
| !.terraform/modules/ | ||
| */ | ||
|
|
||
| var defaultExclusions = []rule{ | ||
| { | ||
| val: "**/.git/**", | ||
| excluded: false, | ||
| }, | ||
| { | ||
| val: "**/.terraform/**", | ||
| excluded: false, | ||
| }, | ||
| { | ||
| val: "**/.terraform/modules/**", | ||
| excluded: true, | ||
| }, | ||
| } | ||
|
|
||
| func debug(printAll bool, path string, message ...interface{}) { | ||
| logLevel := os.Getenv("TF_IGNORE") == "trace" | ||
| debugPath := os.Getenv("TF_IGNORE_DEBUG") | ||
| isPath := debugPath != "" | ||
| if isPath { | ||
| isPath = strings.Contains(path, debugPath) | ||
| } | ||
|
|
||
| if logLevel { | ||
| if printAll || isPath { | ||
| fmt.Println(message...) | ||
| } | ||
| } | ||
| } |
Oops, something went wrong.