TermiNexus
782b4d63ff
- 新增 copyself：延迟后删除目标并复制文件/目录 - ViperC 新增 --build-self：自举到 __vpcbuild_2__ 后由 copyself 替换 __vpcbuild__ - 同步当前 ViperC 工作区已有的 Gen/Diag/Stub 改动 - .gitignore 忽略 __vpcbuild_* 与 _sha1_map.txt
45 lines
1.8 KiB
Markdown
45 lines
1.8 KiB
Markdown
# copyself
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A small Windows VPC utility used by `viperc --build-self`.
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## Build
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```powershell
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viperc --project ViperC\copyself\project.vpj --clean
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```
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Output: `ViperC\copyself\__vpcbuild__\output\copyself.exe`.
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## Usage
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```text
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copyself <seconds> <source> <destination>
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```
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- Waits `<seconds>` seconds, then copies `<source>` to `<destination>`.
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- Existing destination is removed first: files are deleted, directories are removed recursively.
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- Source file, destination file: deletes the destination file, then copies the source file.
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- Source directory, destination directory: removes the destination directory, recreates it, then copies the source directory contents.
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- Source file + destination directory, or source directory + destination file: reports an error and does not copy.
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- Missing destination directories are created.
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- File operation failures print the path and the Win32 error code.
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- Source and destination must not be the same path; a destination inside the source directory is rejected.
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- A source directory inside the destination directory is rejected because the destination is removed first.
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## Example
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```powershell
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cd ViperC\copyself\__vpcbuild__\output
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copyself.exe 5 ../../../__vpcbuild_2__ ../../../__vpcbuild__
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```
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## Used by `viperc --build-self`
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`viperc --build-self` locates the ViperC tree from `viperc.exe`'s own path (not from the current working directory), compiles ViperC into `ViperC\__vpcbuild_2__`, then launches:
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```text
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copyself.exe 5 ../../__vpcbuild_2__ ../../__vpcbuild__
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```
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from working directory `ViperC\copyself\output`; the executable itself may live in `copyself\output` or `copyself\__vpcbuild__\output`. Build `copyself.exe` first with the command above; `--build-self` reports the missing executable and the build command if it is absent.
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