huntedbytheirsandSisyphus
32e7f6134a
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <[email protected]>
75 lines
2.2 KiB
Go
75 lines
2.2 KiB
Go
package binary
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import (
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"errors"
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"strings"
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)
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// PKGInfo is the parsed content of an ALPM .PKGINFO file, the metadata
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// member at the root of an Arch .pkg.tar.zst package.
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type PKGInfo struct {
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Name, Version, Desc, URL, Arch string
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Depends, OptDepends, Provides, Conflicts, Replaces []string
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}
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// Parse parses ALPM .PKGINFO content: lines of "key = value", full-line
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// `#` comments and blank lines ignored. Multi-value keys (depend,
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// optdepend, provides, conflicts, replaces, license) accumulate across
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// lines; single-value keys (pkgname, pkgver, pkgdesc, url, arch, pkgbase)
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// take the last occurrence. pkgver is the FULL version, already in
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// epoch+pkgrel form (e.g. "1.0-1" or "1:1.0.0-1"), and is passed through
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// verbatim. Unknown keys are ignored. Malformed lines (no '=') are
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// reported through warn and skipped, not fatal.
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//
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// Parse returns an error if pkgname is missing: a .PKGINFO without a name
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// is invalid for conversion.
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func Parse(src string, warn func(string)) (*PKGInfo, error) {
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info := &PKGInfo{}
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haveName := false
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for _, line := range strings.Split(src, "\n") {
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line = strings.TrimSpace(line)
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if line == "" || strings.HasPrefix(line, "#") {
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continue
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}
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eq := strings.Index(line, "=")
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if eq < 0 {
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if warn != nil {
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warn("malformed .PKGINFO line (no '='): " + line)
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}
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continue
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}
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key := strings.TrimSpace(line[:eq])
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value := strings.TrimSpace(line[eq+1:])
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switch key {
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case "pkgname":
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info.Name = value
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haveName = true
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case "pkgver":
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info.Version = value
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case "pkgdesc":
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info.Desc = value
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case "url":
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info.URL = value
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case "arch":
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info.Arch = value
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case "depend":
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info.Depends = append(info.Depends, value)
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case "optdepend":
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info.OptDepends = append(info.OptDepends, value)
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case "provides":
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info.Provides = append(info.Provides, value)
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case "conflicts":
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info.Conflicts = append(info.Conflicts, value)
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case "replaces":
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info.Replaces = append(info.Replaces, value)
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default:
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// pkgbase, license, builddate, packager, size, xdata and any
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// unknown keys are not represented in PKGInfo; ignore them.
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}
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}
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if !haveName {
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return nil, errors.New("pkginfo: missing pkgname")
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}
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return info, nil
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}
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