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// Copyright 2022 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package conan
import (
"bufio"
"errors"
"io"
"strings"
)
// Conaninfo represents infos of a Conan package
type Conaninfo struct {
Settings map[string]string `json:"settings"`
FullSettings map[string]string `json:"full_settings"`
Requires []string `json:"requires"`
FullRequires []string `json:"full_requires"`
Options map[string]string `json:"options"`
FullOptions map[string]string `json:"full_options"`
RecipeHash string `json:"recipe_hash"`
Environment map[string][]string `json:"environment"`
}
func ParseConaninfo(r io.Reader) (*Conaninfo, error) {
sections, err := readSections(io.LimitReader(r, 1<<20))
if err != nil {
return nil, err
}
info := &Conaninfo{}
for section, lines := range sections {
if len(lines) == 0 {
continue
}
switch section {
case "settings":
info.Settings = toMap(lines)
case "full_settings":
info.FullSettings = toMap(lines)
case "options":
info.Options = toMap(lines)
case "full_options":
info.FullOptions = toMap(lines)
case "requires":
info.Requires = lines
case "full_requires":
info.FullRequires = lines
case "recipe_hash":
info.RecipeHash = lines[0]
case "env":
info.Environment = toMapArray(lines)
}
}
return info, nil
}
func readSections(r io.Reader) (map[string][]string, error) {
sections := make(map[string][]string)
section := ""
lines := make([]string, 0, 5)
scanner := bufio.NewScanner(r)
for scanner.Scan() {
line := strings.TrimSpace(scanner.Text())
if strings.HasPrefix(line, "[") && strings.HasSuffix(line, "]") {
if section != "" {
sections[section] = lines
}
section = line[1 : len(line)-1]
lines = make([]string, 0, 5)
continue
}
if section != "" {
if line != "" {
lines = append(lines, line)
}
continue
}
if line != "" {
return nil, errors.New("Invalid conaninfo.txt")
}
}
if err := scanner.Err(); err != nil {
return nil, err
}
if section != "" {
sections[section] = lines
}
return sections, nil
}
func toMap(lines []string) map[string]string {
result := make(map[string]string)
for _, line := range lines {
parts := strings.SplitN(line, "=", 2)
if len(parts) != 2 || len(parts[0]) == 0 || len(parts[1]) == 0 {
continue
}
result[parts[0]] = parts[1]
}
return result
}
func toMapArray(lines []string) map[string][]string {
result := make(map[string][]string)
for _, line := range lines {
parts := strings.SplitN(line, "=", 2)
if len(parts) != 2 || len(parts[0]) == 0 || len(parts[1]) == 0 {
continue
}
var items []string
if strings.HasPrefix(parts[1], "[") && strings.HasSuffix(parts[1], "]") {
items = strings.Split(parts[1], ",")
} else {
items = []string{parts[1]}
}
result[parts[0]] = items
}
return result
}
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