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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 screen-position-state-storage: screen-position-state
var screen-position-state/eax: (addr screen-position-state) <- address screen-position-state-storage
init-screen-position-state screen-position-state
normal-text
{
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) {
$render-normal:body: {
# if done-drawing?(state) break
var done?/eax: boolean <- done-drawing? state
compare done?, 0 # false
break-if-!=
#
var c/eax: byte <- next-char fs
# if (c == EOF) break
compare c, 0xffffffff # EOF marker
break-if-=
# if (c == '*') switch to bold
compare c, 0x2a # '*'
{
break-if-!=
start-bold 0
render-until-asterisk fs, state
normal-text
loop $render-normal:body
}
# if (c == '_') switch to bold
compare c, 0x5f # '_'
{
break-if-!=
start-color 0, 0xec, 7 # 236 = darkish gray
start-bold 0
render-until-underscore fs, state
reset-formatting 0
start-color 0, 0xec, 7 # 236 = darkish gray
loop $render-normal:body
}
#
add-char state, c
#
loop
}
}
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 # false
break-if-!=
#
var c/eax: byte <- next-char fs
# if (c == EOF) break
compare c, 0xffffffff # EOF marker
break-if-=
# if (c == '*') break
compare c, 0x2a # '*'
break-if-=
#
add-char state, c
#
loop
}
}
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 # false
break-if-!=
#
var c/eax: byte <- next-char fs
# if (c == EOF) break
compare c, 0xffffffff # EOF marker
break-if-=
# if (c == '_') break
compare c, 0x5f # '_'
break-if-=
#
add-char state, c
#
loop
}
}
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
}
fn normal-text {
reset-formatting 0
start-color 0, 0xec, 7 # 236 = darkish gray
}
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