Large reorganization of headers (WIP)

2018-08-26 08:11:35 -06:00
parent ff32c8cbbd
commit c20ce5ffed
261 changed files with 236 additions and 1672 deletions
@@ -0,0 +1,115 @@
+use core::fmt::Write as CoreWrite;
+use core::{slice, str};
+
+use platform::types::*;
+use platform::{self, Write};
+use vl::VaList;
+
+pub unsafe fn printf<W: Write>(w: W, format: *const c_char, mut ap: VaList) -> c_int {
+    let mut w = platform::CountingWriter::new(w);
+
+    let format = slice::from_raw_parts(format as *const u8, usize::max_value());
+
+    let mut found_percent = false;
+    for &b in format.iter() {
+        // check for NUL
+        if b == 0 {
+            break;
+        }
+
+        if found_percent {
+            if match b as char {
+                '%' => {
+                    found_percent = false;
+                    w.write_char('%')
+                }
+                'c' => {
+                    let a = ap.get::<u32>();
+
+                    found_percent = false;
+
+                    w.write_u8(a as u8)
+                }
+                'd' | 'i' => {
+                    let a = ap.get::<c_int>();
+
+                    found_percent = false;
+
+                    w.write_fmt(format_args!("{}", a))
+                }
+                'f' | 'F' => {
+                    let a = ap.get::<f64>();
+
+                    found_percent = false;
+
+                    w.write_fmt(format_args!("{}", a))
+                }
+                'n' => {
+                    let _a = ap.get::<c_int>();
+
+                    found_percent = false;
+                    Ok(())
+                }
+                'p' => {
+                    let a = ap.get::<usize>();
+
+                    found_percent = false;
+
+                    w.write_fmt(format_args!("0x{:x}", a))
+                }
+                's' => {
+                    let a = ap.get::<*const c_char>();
+
+                    found_percent = false;
+
+                    w.write_str(str::from_utf8_unchecked(platform::c_str(a)))
+                }
+                'u' => {
+                    let a = ap.get::<c_uint>();
+
+                    found_percent = false;
+
+                    w.write_fmt(format_args!("{}", a))
+                }
+                'x' => {
+                    let a = ap.get::<c_uint>();
+
+                    found_percent = false;
+
+                    w.write_fmt(format_args!("{:x}", a))
+                }
+                'X' => {
+                    let a = ap.get::<c_uint>();
+
+                    found_percent = false;
+
+                    w.write_fmt(format_args!("{:X}", a))
+                }
+                'o' => {
+                    let a = ap.get::<c_uint>();
+
+                    found_percent = false;
+
+                    w.write_fmt(format_args!("{:o}", a))
+                }
+                '-' => Ok(()),
+                '+' => Ok(()),
+                ' ' => Ok(()),
+                '#' => Ok(()),
+                '0'...'9' => Ok(()),
+                _ => Ok(()),
+            }.is_err()
+            {
+                return -1;
+            }
+        } else if b == b'%' {
+            found_percent = true;
+        } else {
+            if w.write_u8(b).is_err() {
+                return -1;
+            }
+        }
+    }
+
+    w.written as c_int
+}