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|
package main
import (
"encoding/json"
"os/exec"
"strings"
"time"
"github.com/fatih/color"
)
type FormulaInfo struct {
Name string `json:"name"`
Desc string `json:"desc"`
Homepage string `json:"homepage"`
License string `json:"license"`
Versions struct {
Stable string `json:"stable"`
} `json:"versions"`
Installed []struct {
Version string `json:"version"`
InstalledAsDependency bool `json:"installed_as_dependency"`
InstalledOnRequest bool `json:"installed_on_request"`
} `json:"installed"`
Outdated bool `json:"outdated"`
}
type CaskInfo struct {
Token string `json:"token"`
Name []string `json:"name"`
Desc string `json:"desc"`
Homepage string `json:"homepage"`
Installed string `json:"installed"`
AutoUpdates bool `json:"auto_updates"`
Outdated bool `json:"outdated"`
Version string `json:"version"`
}
const brewDepCacheTTL = 3*24*time.Hour
const brewListCacheTTL = 24*time.Hour
// GetInfo fetches package info for both formulae and casks.
// It returns one of the two structs depending on the package type.
func GetBrewInfo(pkg string) (*FormulaInfo, *CaskInfo) {
out, err := exec.Command("brew", "info", "--json=v2", pkg).Output()
if err != nil {
printErrorAndExit("Error fetching info. Please check for typo.")
}
var data struct {
Formulae []FormulaInfo `json:"formulae"`
Casks []CaskInfo `json:"casks"`
}
if err := json.Unmarshal(out, &data); err != nil {
printErrorAndExit("Error parsing data.")
}
if len(data.Formulae) > 0 {
return &data.Formulae[0], nil
}
if len(data.Casks) > 0 {
return nil, &data.Casks[0]
}
return nil, nil // not found
}
func GetBrewUses(pkg string) []string {
out, err := exec.Command("brew", "uses", "--installed", pkg).Output()
if err != nil {
color.Red("❌ Error fetching reverse dependencies.")
return []string{}
}
// Each line is a formula name
lines := strings.Split(strings.TrimSpace(string(out)), "\n")
if len(lines) == 1 && lines[0] == "" {
return []string{}
}
return lines
}
func GetBrewList() []string {
const cachepath = "brewlist.json"
var list []string
// Try reading from cache
list_raw, cache_hit := ReadCache(cachepath, brewListCacheTTL)
if cache_hit {
err := json.Unmarshal(list_raw, &list)
if err != nil {
color.Red("❌ Error unmarshaling cache of brew list")
return []string{}
}
} else {
out, err := exec.
Command("brew", "list", "--installed-on-request").
Output()
if err != nil {
color.Red("❌ Error fetching brew list.")
return []string{}
}
list = strings.Split(strings.TrimSpace(string(out)), "\n")
}
// Write cache
defer func() {
brewlist_json, err := json.Marshal(list)
if err != nil {
color.Red("❌ Error marshaling brew list data to write cache.")
}
WriteCache(cachepath, brewlist_json)
}()
return list
}
func GetBrewDeps(useCache bool) map[string][]string {
depmap := map[string][]string{}
// Try reading from cache
const cachepath = "depmap.json"
var cache_data []byte
var cache_hit bool
if (useCache) {
cache_data, cache_hit = ReadCache(cachepath, brewDepCacheTTL)
}
if cache_hit && useCache {
// if cache hit, decode
err := json.Unmarshal(cache_data, &depmap)
if err != nil {
color.Red("❌ Error unmarshaling cache of dependency map.")
}
} else {
// if not, try fetch
out, err := exec.
Command("brew", "deps", "--installed", "--direct").
Output()
if err != nil {
color.Red("❌ Error fetching brew dependencies.")
return map[string][]string{}
}
// parse raw data
// a list of items like "package: depA depB depC..."
dep_strs := strings.FieldsFunc(string(out), func(r rune) bool {
return r == '\n' || r == '\r'
})
for _, dep_str := range dep_strs {
parts := strings.Split(dep_str, ":")
pkg := parts[0]
pkg_deps := parts[1]
deps := strings.Split(pkg_deps, " ")
filtered := []string{}
// remove empty elements in slice
for _, dep := range deps {
if dep != "" {
filtered = append(filtered, dep)
}
}
depmap[pkg] = filtered
}
}
// Writing cache
defer func() {
depmap_json, err := json.Marshal(depmap)
if err != nil {
color.Red("Error marshaling JSON when writing cache:", err)
}
WriteCache("depmap.json", depmap_json)
}()
return depmap
}
|
