forked from sheetjs/docs.sheetjs.com
103 lines
2.7 KiB
Python
103 lines
2.7 KiB
Python
#!/usr/bin/env python3
|
|
|
|
lib = "libduktape.207.20700.so"
|
|
|
|
from ctypes import CDLL, byref, string_at, c_int, c_void_p, c_char_p, c_size_t
|
|
|
|
duk = CDLL(lib)
|
|
|
|
def str_to_c(s):
|
|
b = s.encode("utf8")
|
|
return [c_char_p(b), len(b)]
|
|
|
|
def duk_create_heap_default():
|
|
duk.duk_create_heap.restype = c_void_p
|
|
return duk.duk_create_heap(None, None, None, None, None)
|
|
|
|
def duk_eval_string_noresult(ctx, cmd):
|
|
[s, l] = str_to_c(cmd)
|
|
return duk.duk_eval_raw(ctx, s, l, 1 | (1<<3) | (1<<9) | (1<<10) | (1<<8) | (1<<11) )
|
|
|
|
def duk_eval_string(ctx, cmd):
|
|
[s, l] = str_to_c(cmd)
|
|
return duk.duk_eval_raw(ctx, s, l, 0 | (1<<3) | (1<<9) | (1<<10) | (1<<11) )
|
|
|
|
def duk_peval(ctx):
|
|
return duk.duk_eval_raw(ctx, None, 0, 1 | (1<<3) | (1<<7) | (1<<11) )
|
|
|
|
def duk_get_string(ctx, idx):
|
|
duk.duk_get_string.restype = c_char_p
|
|
retval = duk.duk_get_string(ctx, idx)
|
|
return retval.decode("utf8")
|
|
|
|
def eval_file(ctx, path):
|
|
with open(path, "r") as f:
|
|
code = f.read()
|
|
[s, l] = str_to_c(code)
|
|
|
|
duk.duk_push_lstring(ctx, s, l)
|
|
retval = duk_peval(ctx)
|
|
duk.duk_pop(ctx)
|
|
return retval
|
|
|
|
def load_file(ctx, path, var):
|
|
with open(path, "rb") as f:
|
|
data = f.read()
|
|
ptr = c_char_p(data)
|
|
duk.duk_push_buffer_raw(ctx, 0, 1 | 2)
|
|
duk.duk_config_buffer(ctx, -1, ptr, len(data))
|
|
duk.duk_put_global_string(ctx, str_to_c(var)[0])
|
|
return data
|
|
|
|
def save_file(ctx, path, var):
|
|
duk.duk_get_global_string(ctx, str_to_c(var)[0])
|
|
sz = c_size_t()
|
|
duk.duk_get_buffer_data.restype = c_void_p
|
|
buf = duk.duk_get_buffer_data(ctx, -1, byref(sz))
|
|
s = string_at(buf, sz.value)
|
|
with open(path, "wb") as f:
|
|
f.write(s)
|
|
|
|
def process(path):
|
|
# initialize
|
|
context = duk_create_heap_default()
|
|
ctx = c_void_p(context)
|
|
|
|
def DOIT(cmd):
|
|
return duk_eval_string_noresult(ctx, cmd)
|
|
|
|
# duktape does not expose a standard "global" by default
|
|
DOIT("var global = (function(){ return this; }).call(null);")
|
|
|
|
# load library
|
|
eval_file(ctx, "shim.min.js")
|
|
eval_file(ctx, "xlsx.full.min.js")
|
|
|
|
# get version string
|
|
duk_eval_string(ctx, "XLSX.version")
|
|
print("SheetJS Library Version %s" % (duk_get_string(ctx, -1)))
|
|
duk.duk_pop(ctx)
|
|
|
|
# read file
|
|
# NOTE: data is captured here to avoid GC
|
|
data = load_file(ctx, path, "buf")
|
|
print("Loaded file %s" % (path))
|
|
|
|
# parse workbook
|
|
DOIT("wb = XLSX.read(buf.slice(0, buf.length));")
|
|
DOIT("ws = wb.Sheets[wb.SheetNames[0]]")
|
|
|
|
# print CSV
|
|
duk_eval_string(ctx, "XLSX.utils.sheet_to_csv(ws)")
|
|
print(duk_get_string(ctx, -1))
|
|
duk.duk_pop(ctx)
|
|
|
|
DOIT("newbuf = (XLSX.write(wb, {type:'buffer', bookType:'xlsb'}));")
|
|
save_file(ctx, "sheetjsw.xlsb", "newbuf")
|
|
|
|
duk.duk_destroy_heap(ctx)
|
|
return 0
|
|
|
|
if("__main__" == __name__):
|
|
from sys import argv
|
|
process(argv[1]) |