6456 - new directory for live-blogging prototypes

I don't have layers yet in Mu. But I can still create lots of versions
of a program.

1 files changed, 106 insertions, 0 deletions

diff --git a/prototypes/browse/17-file-state-broken/main.mu b/prototypes/browse/17-file-state-broken/main.mu
new file mode 100644
index 00000000..e95aff73
--- /dev/null
+++ b/prototypes/browse/17-file-state-broken/main.mu
@@ -0,0 +1,106 @@
+fn main args: (addr array (addr array byte)) -> exit-status/ebx: int {
+  # initialize fs from args[1]
+  var filename/eax: (addr array byte) <- first-arg args
+  var file-state-storage: file-state
+  var fs/esi: (addr file-state) <- address file-state-storage
+  init-file-state fs, filename
+  #
+  enable-screen-grid-mode
+  enable-keyboard-immediate-mode
+  # initialize screen state from screen size
+  var nrows/eax: int <- copy 0
+  var ncols/ecx: int <- copy 0
+  nrows, ncols <- screen-size
+  var screen-position-state-storage: screen-position-state
+  var screen-position-state: (addr screen-position-state) = address screen-position-state-storage
+  init-screen-position-state screen-position-state, nrows, ncols
+  {
+    var done?/eax: boolean <- done-reading? fs
+    compare done?, 0
+    break-if-=
+    render fs, screen-position-state
+    var key/eax: byte <- read-key
+    compare key, 0x71  # 'q'
+    loop-if-!=
+  }
+  enable-keyboard-type-mode
+  enable-screen-type-mode
+  exit-status <- copy 0
+}
+
+fn render fs: (addr file-state), state: (addr screen-position-state) {
+  start-drawing state
+  render-normal fs, state
+}
+
+fn render-normal fs: (addr file-state), state: (addr screen-position-state) {
+  {
+    # if done-drawing?(state) break
+    var done?/eax: boolean <- done-drawing? state
+    compare done?, 0
+    break-if-!=
+    #
+    var c/eax: byte <- next-char fs
+    # if (c == EOF) break
+    compare c, 0xffffffff  # EOF marker
+    break-if-=
+    # if (c == '*') start-bold, render-until-asterisk(fs, state), reset
+    # else if (c == '_') start-bold, render-until-underscore(fs, state), reset
+    # else if (c == '#' and fs is at start of line) compute-color, start color, render-header-line(fs, state), reset
+    # else add-char(state, c)
+  }
+}
+
+fn render-until-asterisk fs: (addr file-state), state: (addr screen-position-state) {
+  {
+    # if done-drawing?(state) break
+    var done?/eax: boolean <- done-drawing? state
+    compare done?, 0
+    break-if-!=
+    #
+    var c/eax: byte <- next-char fs
+    # if (c == EOF) break
+    compare c, 0xffffffff  # EOF marker
+    break-if-=
+    # if (c == '*') break
+    # else add-char(state, c)
+  }
+}
+
+fn render-until-underscore fs: (addr file-state), state: (addr screen-position-state) {
+  {
+    # if done-drawing?(state) break
+    var done?/eax: boolean <- done-drawing? state
+    compare done?, 0
+    break-if-!=
+    #
+    var c/eax: byte <- next-char fs
+    # if (c == EOF) break
+    compare c, 0xffffffff  # EOF marker
+    break-if-=
+    # if (c == '_') break
+    # else add-char(state, c)
+  }
+}
+
+fn render-header-line fs: (addr file-state), state: (addr screen-position-state) {
+  {
+    # if done-drawing?(state) break
+    var done?/eax: boolean <- done-drawing? state
+    compare done?, 0
+    break-if-!=
+    #
+    var c/eax: byte <- next-char fs
+    # if (c == EOF) break
+    compare c, 0xffffffff  # EOF marker
+    break-if-=
+    # if (c == '*') break
+    # else add-char(state, c)
+  }
+}
+
+fn first-arg args-on-stack: (addr array (addr array byte)) -> out/eax: (addr array byte) {
+  var args/eax: (addr array (addr array byte)) <- copy args-on-stack
+  var result/eax: (addr addr array byte) <- index args, 1
+  out <- copy *result
+}