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package gom |
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// This is copied + slightly adapted from gom's `gomfile.go` file. |
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// |
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// gom's license is MIT-style. |
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import ( |
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"bufio" |
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"fmt" |
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"io" |
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"os" |
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"regexp" |
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"strings" |
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) |
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var qx = `'[^']*'|"[^"]*"` |
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var kx = `:[a-z][a-z0-9_]*` |
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var ax = `(?:\s*` + kx + `\s*|,\s*` + kx + `\s*)` |
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var reGroup = regexp.MustCompile(`\s*group\s+((?:` + kx + `\s*|,\s*` + kx + `\s*)*)\s*do\s*$`) |
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var reEnd = regexp.MustCompile(`\s*end\s*$`) |
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var reGom = regexp.MustCompile(`^\s*gom\s+(` + qx + `)\s*((?:,\s*` + kx + `\s*=>\s*(?:` + qx + `|\s*\[\s*` + ax + `*\s*\]\s*))*)$`) |
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var reOptions = regexp.MustCompile(`(,\s*` + kx + `\s*=>\s*(?:` + qx + `|\s*\[\s*` + ax + `*\s*\]\s*)\s*)`) |
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func unquote(name string) string { |
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name = strings.TrimSpace(name) |
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if len(name) > 2 { |
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if (name[0] == '\'' && name[len(name)-1] == '\'') || (name[0] == '"' && name[len(name)-1] == '"') { |
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return name[1 : len(name)-1] |
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} |
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} |
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return name |
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} |
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func parseOptions(line string, options map[string]interface{}) { |
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ss := reOptions.FindAllStringSubmatch(line, -1) |
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reA := regexp.MustCompile(ax) |
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for _, s := range ss { |
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kvs := strings.SplitN(strings.TrimSpace(s[0])[1:], "=>", 2) |
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kvs[0], kvs[1] = strings.TrimSpace(kvs[0]), strings.TrimSpace(kvs[1]) |
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if kvs[1][0] == '[' { |
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as := reA.FindAllStringSubmatch(kvs[1][1:len(kvs[1])-1], -1) |
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a := []string{} |
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for i := range as { |
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it := strings.TrimSpace(as[i][0]) |
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if strings.HasPrefix(it, ",") { |
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it = strings.TrimSpace(it[1:]) |
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} |
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if strings.HasPrefix(it, ":") { |
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it = strings.TrimSpace(it[1:]) |
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} |
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a = append(a, it) |
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} |
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options[kvs[0][1:]] = a |
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} else { |
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options[kvs[0][1:]] = unquote(kvs[1]) |
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} |
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} |
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} |
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// Gom represents configuration from Gom. |
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type Gom struct { |
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name string |
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options map[string]interface{} |
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} |
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func parseGomfile(filename string) ([]Gom, error) { |
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f, err := os.Open(filename + ".lock") |
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if err != nil { |
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f, err = os.Open(filename) |
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if err != nil { |
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return nil, err |
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} |
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} |
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br := bufio.NewReader(f) |
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goms := make([]Gom, 0) |
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n := 0 |
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skip := 0 |
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valid := true |
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var envs []string |
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for { |
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n++ |
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lb, _, err := br.ReadLine() |
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if err != nil { |
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if err == io.EOF { |
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return goms, nil |
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} |
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return nil, err |
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} |
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line := strings.TrimSpace(string(lb)) |
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if line == "" || strings.HasPrefix(line, "#") { |
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continue |
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} |
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name := "" |
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options := make(map[string]interface{}) |
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var items []string |
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if reGroup.MatchString(line) { |
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envs = strings.Split(reGroup.FindStringSubmatch(line)[1], ",") |
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for i := range envs { |
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envs[i] = strings.TrimSpace(envs[i])[1:] |
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} |
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valid = true |
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continue |
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} else if reEnd.MatchString(line) { |
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if !valid { |
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skip-- |
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if skip < 0 { |
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return nil, fmt.Errorf("Syntax Error at line %d", n) |
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} |
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} |
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valid = false |
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envs = nil |
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continue |
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} else if skip > 0 { |
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continue |
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} else if reGom.MatchString(line) { |
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items = reGom.FindStringSubmatch(line)[1:] |
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name = unquote(items[0]) |
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parseOptions(items[1], options) |
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} else { |
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return nil, fmt.Errorf("Syntax Error at line %d", n) |
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} |
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if envs != nil { |
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options["group"] = envs |
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} |
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goms = append(goms, Gom{name, options}) |
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} |
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} |
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Masterminds /
glide
