84 lines
2.0 KiB
Go
84 lines
2.0 KiB
Go
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package raft
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import (
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"io"
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"strconv"
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"sourcecode.social/reiver/go-erorr"
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)
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// writeEmbeddedFile embeds a(nother) file into a RAFT file using the provided file-name, file-size, and file-content.
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//
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// Note that this adds an additional "\n" after the file-content.
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// Technically it isn't necessary.
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// But it is added to make the resulting raft file easier to read (if a person was to try to read it).
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func writeEmbeddedFile(writer io.Writer, filename string, filesize int64, filecontent io.Reader) error {
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if nil == writer {
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return errNilWriter
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}
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if nil == filecontent {
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return errNilReader
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}
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// file name
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{
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var value string = filename
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{
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err := writeString(writer, value)
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if nil != err {
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return erorr.Errorf("raft: problem writing embedded-file's file-name (i.e., %q): %w", value, err)
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}
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}
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{
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err := writeString(writer, eol)
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if nil != err {
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return erorr.Errorf("raft: problem writing end-of-line (i.e., %q) after writing embedded-file's file-name (i.e., %q): %w", eol, value, err)
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}
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}
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}
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// file size
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{
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var value string = strconv.FormatInt(filesize, 10)
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{
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err := writeString(writer, value)
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if nil != err {
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return erorr.Errorf("raft: problem writing embedded-file's file-size — %q: %w", value, err)
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}
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}
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{
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err := writeString(writer, eol)
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if nil != err {
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return erorr.Errorf("raft: problem writing end-of-line (i.e., %q) after writing embedded-file's file-size (i.e., %q): %w", eol, value, err)
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}
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}
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}
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// file content
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{
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{
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err := copyN(writer, filecontent, filesize)
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if nil != err {
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return erorr.Errorf("raft: problem writing embedded-file's file-content: %w", err)
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}
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}
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{
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var value string = eoleol // <---- Note this is a 'eoleol' rather than just a single 'eol'. This is because the 2nd 'eol' add a blank line that makes it easier for a programmer to read the file.
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err := writeString(writer, value)
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if nil != err {
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return erorr.Errorf("raft: problem writing 2 end-of-lines (i.e., %q) after writing file-content: %w", value, err)
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}
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}
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}
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return nil
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}
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