lobo/ssd1306_oled_display_cli
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implement ability to pipe in text (#3)

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This commit is contained in:
Emil Lerch 2023-04-03 17:13:27 -07:00
parent 80d0f8c377
commit a7b917d3e9
Signed by: lobo
GPG key ID: A7B62D657EF764F8
1 changed files with 14 additions and 9 deletions
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23
src/main.zig
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@ -24,7 +24,7 @@ const LINES = 8;
// Device specifications // Device specifications
const PAGES = 8; const PAGES = 8;
var lines: [LINES]*const [:0]u8 = undefined; var lines: [LINES]*[:0]u8 = undefined;
fn usage(args: [][]u8) !void { fn usage(args: [][]u8) !void {
const writer = std.io.getStdErr().writer(); const writer = std.io.getStdErr().writer();
@ -53,25 +53,34 @@ pub fn main() !void {
// from the file // from the file
const stdin_file = std.io.getStdIn(); const stdin_file = std.io.getStdIn();
var stdin_data: [WIDTH * HEIGHT + 1]u8 = undefined; var stdin_data: [WIDTH * HEIGHT + 1]u8 = undefined;
// Need this to support deallocation of memory
var line_inx: usize = 0; var line_inx: usize = 0;
var stdin_lines: [LINES][:0]u8 = undefined;
defer { defer {
for (0..line_inx) |i| { for (0..line_inx) |i| {
alloc.free(@constCast(lines[i].*)); alloc.free(stdin_lines[i]);
} }
} }
var nothing: [:0]u8 = @constCast("");
for (lines, 0..) |_, i| {
lines[i] = &nothing;
}
if (!stdin_file.isTty()) { if (!stdin_file.isTty()) {
const read = try stdin_file.readAll(&stdin_data); const read = try stdin_file.readAll(&stdin_data);
if (read == stdin_data.len) { if (read == stdin_data.len) {
try std.io.getStdErr().writer().print("ERROR: data provided exceeds what can be sent to device!\n", .{}); try std.io.getStdErr().writer().print("ERROR: data provided exceeds what can be sent to device!\n", .{});
try usage(args); try usage(args);
} }
var it = std.mem.split(u8, &stdin_data, "\n"); var read_data = stdin_data[0..read];
var it = std.mem.split(u8, read_data, "\n");
while (it.next()) |line| { while (it.next()) |line| {
const bwahahaha = try alloc.dupeZ(u8, line); if (line.len == 0) continue;
lines[line_inx] = &bwahahaha; stdin_lines[line_inx] = try alloc.dupeZ(u8, line);
lines[line_inx] = &stdin_lines[line_inx];
line_inx += 1; line_inx += 1;
} }
} }
std.debug.print("delme: {s}\n", .{lines[0].*});
const opts = try processArgs(alloc, args, &lines); const opts = try processArgs(alloc, args, &lines);
defer alloc.destroy(opts); defer alloc.destroy(opts);
if (opts.background_filename.len > 0) try stdout.print("Converting {s}\n", .{opts.background_filename}); if (opts.background_filename.len > 0) try stdout.print("Converting {s}\n", .{opts.background_filename});
@ -94,10 +103,6 @@ fn processArgs(allocator: std.mem.Allocator, args: [][:0]u8, line_array: *[LINES
if (!std.mem.eql(u8, opts.device_file, "-") and !std.mem.startsWith(u8, opts.device_file, prefix)) try usage(args); if (!std.mem.eql(u8, opts.device_file, "-") and !std.mem.startsWith(u8, opts.device_file, prefix)) try usage(args);
opts.background_filename = @constCast(""); opts.background_filename = @constCast("");
const nothing: [:0]u8 = @constCast("");
for (line_array.*, 0..) |_, i| {
line_array.*[i] = &nothing;
}
var is_filename = false; var is_filename = false;
var line_number: ?usize = null; var line_number: ?usize = null;
for (args[1..], 1..) |arg, i| { for (args[1..], 1..) |arg, i| {