diff options
Diffstat (limited to 'prototypes/browse/29/main.mu')
| -rw-r--r-- | prototypes/browse/29/main.mu | 271 |
1 files changed, 0 insertions, 271 deletions
diff --git a/prototypes/browse/29/main.mu b/prototypes/browse/29/main.mu deleted file mode 100644 index 08e4f3c6..00000000 --- a/prototypes/browse/29/main.mu +++ /dev/null @@ -1,271 +0,0 @@ -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: grapheme <- read-key-from-real-keyboard - 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) { - var newline-seen?/esi: boolean <- copy 0 # false - var start-of-paragraph?/edi: boolean <- copy 1 # true - var previous-char/ebx: byte <- copy 0 -$render-normal:loop: { - # if done-drawing?(state) break - var done?/eax: boolean <- done-drawing? state - compare done?, 0 # false - break-if-!= - var c/eax: byte <- next-char fs -$render-normal:loop-body: { - # if (c == EOF) break - compare c, 0xffffffff # EOF marker - break-if-= $render-normal:loop - - ## if (c == newline) perform some fairly sophisticated parsing for soft newlines - compare c, 0xa # newline - { - break-if-!= - # if it's the first newline, buffer it - compare newline-seen?, 0 - { - break-if-!= - newline-seen? <- copy 1 # true - break $render-normal:loop-body - } - # otherwise render two newlines - { - break-if-= - add-char state, 0xa # newline - add-char state, 0xa # newline - newline-seen? <- copy 0 # false - start-of-paragraph? <- copy 1 # true - break $render-normal:loop-body - } - } - # if start of paragraph and c == '#', switch to header - compare start-of-paragraph?, 0 - { - break-if-= - compare c, 0x23 # '#' - { - break-if-!= - render-header-line fs, state - newline-seen? <- copy 1 # true - break $render-normal:loop-body - } - } - # c is not a newline - start-of-paragraph? <- copy 0 # false - # if c is unprintable (particularly a '\r' CR), skip it - compare c, 0x20 - loop-if-< $render-normal:loop - # If there's a newline buffered and c is a space, print the buffered - # newline (hard newline). - # If there's a newline buffered and c is not a newline or space, print a - # space (soft newline). - compare newline-seen?, 0 # false -$render-normal:flush-buffered-newline: { - break-if-= - newline-seen? <- copy 0 # false - { - compare c, 0x20 - break-if-!= - add-char state, 0xa # newline - break $render-normal:flush-buffered-newline - } - add-char state, 0x20 # space - # fall through to print c - } - ## end soft newline support - -$render-normal:whitespace-separated-regions: { - # if previous-char wasn't whitespace, skip this block - { - compare previous-char, 0x20 # space - break-if-= - compare previous-char, 0xa # newline - break-if-= - break $render-normal:whitespace-separated-regions - } - # if (c == '*') switch to bold - compare c, 0x2a # '*' - { - break-if-!= - start-bold 0 - render-until-asterisk fs, state - normal-text - break $render-normal:loop-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 - break $render-normal:loop-body - } - } - # - add-char state, c - } # $render-normal:loop-body - previous-char <- copy c - loop - } # $render-normal:loop -} - -fn render-header-line fs: (addr file-state), state: (addr screen-position-state) { -$render-header-line:body: { - # compute color based on number of '#'s - var header-level/esi: int <- copy 1 # caller already grabbed one - var c/eax: byte <- copy 0 - { - # if done-drawing?(state) return - { - var done?/eax: boolean <- done-drawing? state - compare done?, 0 # false - break-if-!= $render-header-line:body - } - # - c <- next-char fs - # if (c != '#') break - compare c, 0x23 # '#' - break-if-!= - # - header-level <- increment - # - loop - } - start-heading header-level - { - # if done-drawing?(state) break - { - var done?/eax: boolean <- done-drawing? state - compare done?, 0 # false - break-if-!= - } - # - c <- next-char fs - # if (c == EOF) break - compare c, 0xffffffff # EOF marker - break-if-= - # if (c == newline) break - compare c, 0xa # newline - break-if-= - # - add-char state, c - # - loop - } - normal-text -} -} - -# colors for a light background, going from bright to dark (meeting up with bold-text) -fn start-heading header-level: int { -$start-heading:body: { - start-bold 0 - compare header-level, 1 - { - break-if-!= - start-color 0, 0xa0, 7 - break $start-heading:body - } - compare header-level, 2 - { - break-if-!= - start-color 0, 0x7c, 7 - break $start-heading:body - } - compare header-level, 3 - { - break-if-!= - start-color 0, 0x58, 7 - break $start-heading:body - } - compare header-level, 4 - { - break-if-!= - start-color 0, 0x34, 7 - break $start-heading:body - } - start-color 0, 0xe8, 7 -} -} - -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 -} |