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Provide useful feedback if user executes command in different folder (#1407) 

Provides better feedback if user executes in a different folder than what is expected by mdbook

After the changes `mdbook build`
```
2020-12-19 14:27:35 [ERROR] (mdbook::utils): Error: Couldn't open SUMMARY.md in "/Users/vicky/rust/source_codes/mdbook_testing/src/src" directory
2020-12-19 14:27:35 [ERROR] (mdbook::utils):    Caused By: No such file or directory (os error 2)
```

Previously: `mdbook build`
```
2020-12-19 14:28:46 [ERROR] (mdbook::utils): Error: Couldn't open SUMMARY.md
2020-12-19 14:28:46 [ERROR] (mdbook::utils):    Caused By: No such file or directory (os error 2)
```
This commit is contained in:
Vivek Bharath Akupatni 2020-12-27 15:45:11 -05:00 committed by GitHub
parent 7af4b1dfe8
commit a3d4febe3e
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 4 additions and 3 deletions
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7
src/book/book.rs
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@ -14,11 +14,12 @@ pub fn load_book<P: AsRef<Path>>(src_dir: P, cfg: &BuildConfig) -> Result<Book>
let summary_md = src_dir.join("SUMMARY.md");
let mut summary_content = String::new();
File::open(summary_md)
.with_context(|| "Couldn't open SUMMARY.md")?
File::open(&summary_md)
.with_context(|| format!("Couldn't open SUMMARY.md in {:?} directory", src_dir))?
.read_to_string(&mut summary_content)?;
let summary = parse_summary(&summary_content).with_context(|| "Summary parsing failed")?;
let summary = parse_summary(&summary_content)
.with_context(|| format!("Summary parsing failed for file={:?}", summary_md))?;
if cfg.create_missing {
create_missing(&src_dir, &summary).with_context(|| "Unable to create missing chapters")?;