forked from sheetjs/docs.sheetjs.com
68 lines
2.6 KiB
Zig
68 lines
2.6 KiB
Zig
const std = @import("std");
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const duktape = @cImport({
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@cInclude("duktape.h");
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});
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// SheetJS scripts embedded at comptime
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const shim = @embedFile("shim.min.js");
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const xlsx = @embedFile("xlsx.full.min.js");
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pub fn main() !void {
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// initialize duktape
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const ctx = duktape.duk_create_heap(null, null, null, null, null);
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defer _ = duktape.duk_destroy_heap(ctx);
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// load SheetJS scripts
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_ = duktape.duk_peval_string(ctx, shim);
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_ = duktape.duk_peval_string(ctx, xlsx);
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// display version number
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_ = duktape.duk_peval_string(ctx, "XLSX.version");
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const sum = duktape.duk_get_string(ctx, -1);
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std.debug.print("SheetJS Version {s}\n", .{sum});
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duktape.duk_pop(ctx);
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// create allocator
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var gpa = std.heap.GeneralPurposeAllocator(.{}){};
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defer _ = gpa.deinit();
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var alloc = gpa.allocator();
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// determine file to read
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var args = try std.process.argsWithAllocator(alloc);
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defer args.deinit();
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_ = args.next();
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const path = args.next();
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if (path == null) {
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std.debug.print("Must specify a filename!", .{});
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return;
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}
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std.debug.print("Reading from {s}\n", .{path.?});
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// read file
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const file = try std.fs.cwd().readFileAlloc(alloc, path.?, std.math.maxInt(usize));
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defer alloc.free(file);
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std.debug.print("Size: {} bytes\n", .{file.len});
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// load into duktape
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_ = duktape.duk_push_buffer_raw(ctx, 0, duktape.DUK_BUF_FLAG_DYNAMIC | duktape.DUK_BUF_FLAG_EXTERNAL);
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duktape.duk_config_buffer(ctx, -1, file.ptr, file.len);
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_ = duktape.duk_put_global_string(ctx, "buf");
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_ = duktape.duk_eval_raw(ctx, "workbook = XLSX.read(buf.slice(0, buf.length), {type:'buffer'});", 0, duktape.DUK_COMPILE_EVAL | duktape.DUK_COMPILE_NOSOURCE | duktape.DUK_COMPILE_STRLEN | duktape.DUK_COMPILE_NORESULT | duktape.DUK_COMPILE_NOFILENAME);
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// display CSV of first worksheet
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_ = duktape.duk_peval_string(ctx, "XLSX.utils.sheet_to_csv(workbook.Sheets[workbook.SheetNames[0]])");
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const csv = duktape.duk_get_string(ctx, -1);
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std.debug.print("{s}\n", .{csv});
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duktape.duk_pop(ctx);
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// convert to XLSX
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_ = duktape.duk_eval_raw(ctx, "XLSX.write(workbook, {type:'array', bookType:'xlsx'})", 0, duktape.DUK_COMPILE_EVAL | duktape.DUK_COMPILE_NOSOURCE | duktape.DUK_COMPILE_STRLEN | duktape.DUK_COMPILE_NOFILENAME);
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var sz: usize = 0;
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const c_ptr: *anyopaque = duktape.duk_get_buffer_data(ctx, -1, &sz).?;
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// generate zig slice from C pointer + length
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const slc: []u8 = @as([*]u8, @ptrCast(c_ptr))[0..sz];
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// write to file
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_ = try std.fs.cwd().writeFile("sheetjs.zig.xlsx", slc);
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}
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