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author | Kartik Agaram <vc@akkartik.com> | 2020-06-05 22:15:02 -0700 |
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committer | Kartik Agaram <vc@akkartik.com> | 2020-06-05 22:15:37 -0700 |
commit | 4d8364749413a7cdc17ad6c49b3ce782d3b2a790 (patch) | |
tree | 8ac0ffd01587bd14db0a6ff1c5d0de450f9b6028 /prototypes/browse/24-bold | |
parent | 5bc67a31fecc1e05b87888b4b41d94b16eba001b (diff) | |
download | mu-4d8364749413a7cdc17ad6c49b3ce782d3b2a790.tar.gz |
6482
Diffstat (limited to 'prototypes/browse/24-bold')
-rw-r--r-- | prototypes/browse/24-bold/README.md | 1 | ||||
-rw-r--r-- | prototypes/browse/24-bold/file-state.mu | 44 | ||||
-rw-r--r-- | prototypes/browse/24-bold/main.mu | 52 | ||||
-rw-r--r-- | prototypes/browse/24-bold/screen-position-state.mu | 164 |
4 files changed, 261 insertions, 0 deletions
diff --git a/prototypes/browse/24-bold/README.md b/prototypes/browse/24-bold/README.md new file mode 100644 index 00000000..a6ecec26 --- /dev/null +++ b/prototypes/browse/24-bold/README.md @@ -0,0 +1 @@ +Support bold text. diff --git a/prototypes/browse/24-bold/file-state.mu b/prototypes/browse/24-bold/file-state.mu new file mode 100644 index 00000000..35f40229 --- /dev/null +++ b/prototypes/browse/24-bold/file-state.mu @@ -0,0 +1,44 @@ +type file-state { + source: (handle buffered-file) + eof?: boolean +} + +fn init-file-state _self: (addr file-state), filename: (addr array byte) { + var self/eax: (addr file-state) <- copy _self + load-file self, filename + var eof/eax: (addr boolean) <- get self, eof? + copy-to *eof, 0 # false +} + +fn load-file _self: (addr file-state), filename: (addr array byte) { + var self/eax: (addr file-state) <- copy _self + var out/esi: (addr handle buffered-file) <- get self, source + open filename, 0, out # 0 = read mode +} + +fn next-char _self: (addr file-state) -> result/eax: byte { + var self/ecx: (addr file-state) <- copy _self + var source/eax: (addr handle buffered-file) <- get self, source + var in/eax: (addr buffered-file) <- lookup *source + result <- read-byte-buffered in + # if result == EOF, set eof? + compare result, 0xffffffff # EOF marker + { + var eof/ecx: (addr boolean) <- get self, eof? + copy-to *eof, 1 # true + } +} + +fn done-reading? _self: (addr file-state) -> result/eax: boolean { + var self/eax: (addr file-state) <- copy _self + var eof/eax: (addr boolean) <- get self, eof? + result <- copy *eof +} + +fn dump in: (addr buffered-file) { + var c/eax: byte <- read-byte-buffered in + compare c, 0xffffffff # EOF marker + break-if-= + print-byte c + loop +} diff --git a/prototypes/browse/24-bold/main.mu b/prototypes/browse/24-bold/main.mu new file mode 100644 index 00000000..cf2fef0d --- /dev/null +++ b/prototypes/browse/24-bold/main.mu @@ -0,0 +1,52 @@ +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 + { + 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 # false + break-if-!= + # + var c/eax: byte <- next-char fs + # if (c == EOF) break + compare c, 0xffffffff # EOF marker + 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 +} diff --git a/prototypes/browse/24-bold/screen-position-state.mu b/prototypes/browse/24-bold/screen-position-state.mu new file mode 100644 index 00000000..62161108 --- /dev/null +++ b/prototypes/browse/24-bold/screen-position-state.mu @@ -0,0 +1,164 @@ +type screen-position-state { + nrows: int # const + ncols: int # const + toprow: int + botrow: int + leftcol: int + rightcol: int + row: int + col: int +} + +fn init-screen-position-state _self: (addr screen-position-state) { + # hardcoded parameters: + # top-margin + # page-margin + # page-width + var self/esi: (addr screen-position-state) <- copy _self + var nrows/eax: int <- copy 0 + var ncols/ecx: int <- copy 0 + nrows, ncols <- screen-size + var dest/edx: (addr int) <- copy 0 + # self->nrows = nrows + dest <- get self, nrows + copy-to *dest, nrows + # self->ncols = ncols + dest <- get self, ncols + copy-to *dest, ncols + # self->toprow = top-margin + dest <- get self, toprow + copy-to *dest, 2 # top-margin + # self->botrow = nrows + dest <- get self, botrow + copy-to *dest, nrows + # + start-drawing self +} + +fn start-drawing _self: (addr screen-position-state) { + var self/esi: (addr screen-position-state) <- copy _self + var tmp/eax: (addr int) <- copy 0 + var tmp2/ecx: int <- copy 0 + clear-screen + # self->leftcol = page-margin + tmp <- get self, leftcol + copy-to *tmp, 5 # left-margin + # self->rightcol = self->leftcol + page-width + tmp <- get self, rightcol + copy-to *tmp, 0x45 # left-margin + page-width + # self->row = self->toprow + tmp <- get self, toprow + tmp2 <- copy *tmp + tmp <- get self, row + copy-to *tmp, tmp2 + # self->col = self->leftcol + tmp <- get self, leftcol + tmp2 <- copy *tmp + tmp <- get self, col + copy-to *tmp, tmp2 + # + reposition-cursor self +} + +fn add-char _self: (addr screen-position-state), c: byte { +$add-char:body: { + var self/esi: (addr screen-position-state) <- copy _self + { + compare c, 0xa # newline + break-if-!= + next-line self + reposition-cursor self + break $add-char:body + } + # print c + print-byte c + # self->col++ + var tmp/eax: (addr int) <- get self, col + increment *tmp + # if (self->col > self->rightcol) next-line(self) + var tmp2/ecx: int <- copy *tmp + tmp <- get self, rightcol + compare tmp2, *tmp + { + break-if-<= + next-line self + reposition-cursor self + } +} +} + +fn next-line _self: (addr screen-position-state) { + var self/esi: (addr screen-position-state) <- copy _self + var tmp/eax: (addr int) <- copy 0 + var tmp2/ecx: int <- copy 0 + # self->col = self->leftcol + tmp <- get self, leftcol + tmp2 <- copy *tmp + tmp <- get self, col + copy-to *tmp, tmp2 + # self->row++ + tmp <- get self, row + increment *tmp + # if (self->row > self->botrow) next-page(self) + tmp2 <- copy *tmp + tmp <- get self, botrow + compare tmp2, *tmp + { + break-if-<= + next-page self + } +} + +fn next-page _self: (addr screen-position-state) { + var self/esi: (addr screen-position-state) <- copy _self + var tmp/eax: (addr int) <- copy 0 + var tmp2/ecx: int <- copy 0 + # self->leftcol = self->rightcol + page-margin + tmp <- get self, rightcol + tmp2 <- copy *tmp + tmp2 <- add 5 # page-margin + tmp <- get self, leftcol + copy-to *tmp, tmp2 + # self->rightcol = self->leftcol + page-width + tmp2 <- copy *tmp + tmp2 <- add 0x40 # page-width + tmp <- get self, rightcol + copy-to *tmp, tmp2 + # self->row = self->toprow + tmp <- get self, toprow + tmp2 <- copy *tmp + tmp <- get self, row + copy-to *tmp, tmp2 + # self->col = self->leftcol + tmp <- get self, leftcol + tmp2 <- copy *tmp + tmp <- get self, col + copy-to *tmp, tmp2 +} + +fn done-drawing? _self: (addr screen-position-state) -> result/eax: boolean { +$done-drawing?:body: { + # return self->rightcol >= self->ncols + var self/esi: (addr screen-position-state) <- copy _self + var max/ecx: (addr int) <- get self, ncols + var tmp/eax: (addr int) <- get self, rightcol + var right/eax: int <- copy *tmp + compare right, *max + { + break-if->= + result <- copy 0 # false + break $done-drawing?:body + } + { + break-if-< + result <- copy 1 # true + } +} +} + +fn reposition-cursor _self: (addr screen-position-state) { + var self/esi: (addr screen-position-state) <- copy _self + var r/eax: (addr int) <- get self, row + var c/ecx: (addr int) <- get self, col + move-cursor *r *c +} |