Method run

src/plot.rs:1175–1230

Run python

(&self, figure_path: &S, show: bool)

    /// Run python
    fn run<S>(&self, figure_path: &S, show: bool) -> Result<(), StrError>
    where
        S: AsRef<OsStr> + ?Sized,
    {
        // update commands
        let fig_path = Path::new(figure_path);
        let header = if show {
            "#### >>>> file generated by plotpy <<<< ####\n\n".to_string() + PYTHON_HEADER
        } else {
            "#### >>>> file generated by plotpy <<<< ####\n\nimport matplotlib\nmatplotlib.use('Agg')\n".to_string()
                + PYTHON_HEADER
        };
        let mut txt = "plt.savefig(fn".to_string();
        if self.save_tight {
            txt.push_str(",bbox_inches='tight',bbox_extra_artists=EXTRA_ARTISTS");
        }
        if let Some(pad) = self.save_pad_inches {
            txt.push_str(format!(",pad_inches={}", pad).as_str());
        }
        if let Some(transparent) = self.save_transparent {
            if transparent {
                txt.push_str(",transparent=True");
            }
        }
        txt.push_str(")\n");
        if show {
            txt.push_str("\nplt.show()\n");
        };
        let commands = format!(
            "{}{}\nfn=r'{}'\n{}",
            header,
            self.buffer,
            fig_path.to_string_lossy(),
            txt
        );

        // call python
        let mut path = Path::new(figure_path).to_path_buf();
        path.set_extension("py");
        let output = call_python3(&self.python_exe, &commands, &path)?;

        // handle error => write log file
        if output != "" {
            let mut log_path = Path::new(figure_path).to_path_buf();
            log_path.set_extension("log");
            let mut log_file = File::create(log_path).map_err(|_| "cannot create log file")?;
            log_file
                .write_all(output.as_bytes())
                .map_err(|_| "cannot write to log file")?;
            if self.show_errors {
                println!("{}", output);
            }
            return Err("python3 failed; please see the log file");
        }
        Ok(())
    }
}