[pengfeixx]

fix: strip fractional seconds from 7z time field

1. Root cause: new 7-Zip (24.09+) -slt output includes fractional
   seconds in Modified field (e.g. 2025-06-04 11:11:04.8826983),
   QDateTime::fromString with "yyyy-MM-dd hh:mm:ss" fails to parse,
   returning invalid QDateTime whose toSecsSinceEpoch returns 0
2. Fix: truncate the fractional seconds part before calling
   QDateTime::fromString, compatible with both old and new 7-Zip
3. Impact: only affects 7z archive Modified time parsing, no behavior
   change for archives without fractional seconds

Log: Fix 7z archive modified time displaying as 1970/01/01

Influence:

1. Test opening 7z archives created by new 7-Zip (24.09+)
2. Verify modified time displays correctly instead of 1970/01/01
3. Test opening 7z archives created by old 7-Zip for no regression

fix: 截断7z修改时间字段的小数秒部分

1. 根因：新版 7-Zip (24.09+) 的 -slt 输出中 Modified 字段带小数秒
   （如 2025-06-04 11:11:04.8826983），QDateTime::fromString 使用
   "yyyy-MM-dd hh:mm:ss" 格式解析失败返回无效 QDateTime，
   toSecsSinceEpoch 返回 0 即 1970/01/01
2. 方案：在调用 QDateTime::fromString 前截断小数秒部分（小数点及
   之后），兼容新旧两种 7-Zip 时间格式
3. 影响：仅影响 7z 压缩包 Modified 时间解析，对旧版 7-Zip 无小数秒
   输出完全向后兼容

Log: 修复7z压缩包修改时间显示为1970/01/01的问题

Influence:

1. 测试使用新版 7-Zip (24.09+) 创建的 7z 压缩包
2. 验证修改时间正确显示而非 1970/01/01
3. 测试旧版 7-Zip 创建的 7z 压缩包无回归

PMS: BUG-378795

Summary by Sourcery

Bug Fixes:

• Fix parsing of 7z archive modification times emitted with fractional seconds so they display correctly instead of defaulting to the Unix epoch.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

The 7z plugin now truncates fractional seconds from newer 7-Zip -slt Modified fields before QDateTime parsing, preventing invalid timestamps from displaying as 1970/01/01 while retaining compatibility with older archives.

Sequence diagram for 7z modified time parsing

sequenceDiagram
    participant SevenZip as 7-Zip -slt
    participant Plugin as Cli7zPlugin
    participant DateTime as QDateTime
    participant Entry as FileEntry
    SevenZip->>Plugin: readListLine(line)
    Plugin->>Plugin: modifiedTime.indexOf('.')
    opt fractional seconds present
        Plugin->>Plugin: modifiedTime.truncate(dotIndex)
    end
    Plugin->>DateTime: fromString(modifiedTime, yyyy-MM-dd hh:mm:ss)
    DateTime-->>Plugin: valid parsed time
    Plugin->>Entry: set uLastModifiedTime

Loading

File-Level Changes

Change	Details	Files
Normalize 7-Zip Modified timestamps before parsing to support fractional-second output.	Extract the Modified field value and trim it. Remove the decimal point and all following fractional digits when present. Parse the normalized timestamp using the existing Qt-version-specific conversion path, preserving support for legacy output.	3rdparty/cli7zplugin/cli7zplugin.cpp

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[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: lzwind, pengfeixx

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• debian/deepin/OWNERS

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[pengfeixx]

/merge