Add an output function, which tries generating to a fresh new file
Getty Ritter
5 years ago
| 1 | use std::fmt::Display; | |
| 2 | use std::fmt::{Formatter, Error}; | |
| 3 |
use std:: |
|
| 1 | use std::fmt::{self, Display, Formatter}; | |
| 2 | use std::fs::OpenOptions; | |
| 3 | use std::io::{self, Write}; | |
| 4 | 4 | |
| 5 | 5 | /// An SVG document |
| 6 | 6 | pub struct SVG { |
| 12 | 12 | pub struct Inches { amt: f64 } |
| 13 | 13 | |
| 14 | 14 | impl Display for Inches { |
| 15 |
fn fmt(&self, f: &mut Formatter) -> Result<(), |
|
| 15 | fn fmt(&self, f: &mut Formatter) -> Result<(), fmt::Error> { | |
| 16 | 16 | self.amt.fmt(f)?; |
| 17 | 17 | write!(f, "in") |
| 18 | 18 | } |
| 61 | 61 | w.write(&buf)?; |
| 62 | 62 | Ok(()) |
| 63 | 63 | } |
| 64 | ||
| 65 | /// Print this SVG document to stdout | |
| 66 | pub fn output(self, p: &str) -> Result<(), std::io::Error> { | |
| 67 | let mut file = { | |
| 68 | let mut n = 0u32; | |
| 69 | let mut path = format!("output/{}{:05}.svg", p, n); | |
| 70 | let mut f = OpenOptions::new().write(true).create_new(true).open(&path); | |
| 71 | loop { | |
| 72 | match f { | |
| 73 | Ok(_) => break, | |
| 74 | Err(ref e) if e.kind() != io::ErrorKind::AlreadyExists => | |
| 75 | return Err(io::Error::new(e.kind(), "failed to create file")), | |
| 76 | _ => (), | |
| 77 | } | |
| 78 | n += 1; | |
| 79 | path = format!("output/{}{:05}.svg", p, n); | |
| 80 | f = OpenOptions::new().write(true).create_new(true).open(&path); | |
| 81 | } | |
| 82 | f.unwrap() | |
| 83 | }; | |
| 84 | let buf = self.to_bytes(); | |
| 85 | file.write(&buf)?; | |
| 86 | Ok(()) | |
| 87 | } | |
| 88 | ||
| 64 | 89 | |
| 65 | 90 | pub fn to_bytes(self) -> Vec<u8> { |
| 66 | 91 | let mut buf = Vec::new(); |