forked from sheetjs/docs.sheetjs.com
121 lines
2.8 KiB
C
121 lines
2.8 KiB
C
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#include <stdio.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include "quickjs.h"
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static char *read_file(const char *filename, size_t *sz) {
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FILE *f = fopen(filename, "rb");
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if(!f) return NULL;
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long fsize; { fseek(f, 0, SEEK_END); fsize = ftell(f); fseek(f, 0, SEEK_SET); }
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char *buf = (char *)malloc(fsize * sizeof(char));
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*sz = fread((void *) buf, 1, fsize, f);
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fclose(f);
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return buf;
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}
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#define CLEANUP(v) { JS_FreeContext(ctx); JS_FreeRuntime(rt); return v; }
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#define FREE(v) JS_FreeValue(ctx, v);
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#define VALIDATE(v) { if(JS_IsException(v)) CLEANUP(1) }
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#define VALINIT(xx,vv) \
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JSValue xx = vv;\
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VALIDATE(xx)
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#define VALPROP(xx,vv,pp) VALINIT(xx, JS_GetPropertyStr(ctx, vv, pp))
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int main(int argc, char *argv[]) {
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JSRuntime *rt = JS_NewRuntime();
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JSContext *ctx = JS_NewContext(rt);
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/* load library */
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{
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size_t len; char * buf = read_file("xlsx.full.min.js", &len);
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VALIDATE(JS_Eval(ctx, buf, len, "<input>", 0))
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free(buf);
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}
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VALINIT(global, JS_GetGlobalObject(ctx))
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VALPROP(XLSX, global, "XLSX");
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FREE(global)
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/* print version */
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{
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VALPROP(version, XLSX, "version")
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size_t vlen; const char *vers = JS_ToCStringLen(ctx, &vlen, version);
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printf("Version: %s\n", vers);
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FREE(version)
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}
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/* parse workbook */
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JSValue wb;
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{
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/* read file */
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size_t dlen; uint8_t * dbuf = (uint8_t *)read_file(argv[1], &dlen);
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/* load data into array buffer */
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JSValue ab = JS_NewArrayBuffer(ctx, dbuf, dlen, NULL, NULL, 0);
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{
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VALPROP(byteLen, ab, "byteLength")
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uint32_t byteLength; JS_ToUint32(ctx, &byteLength, byteLen);
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FREE(byteLen)
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printf("Size: %d\n", byteLength);
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}
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/* call XLSX.read(ab) */
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{
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VALPROP(XLSX_read, XLSX, "read");
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JSValue args[] = { ab };
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wb = JS_Call(ctx, XLSX_read, XLSX, 1, args);
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FREE(XLSX_read)
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}
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/* cleanup */
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FREE(ab)
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free(dbuf);
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}
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/* print CSV of first worksheet */
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{
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/* get first worksheet */
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JSValue ws;
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{
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/* get name of first sheet */
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const char *wsname;
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{
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JSValue SheetNames = JS_GetPropertyStr(ctx, wb, "SheetNames");
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JSValue Sheet1 = JS_GetPropertyStr(ctx, SheetNames, "0");
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size_t wslen; wsname = JS_ToCStringLen(ctx, &wslen, Sheet1);
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FREE(Sheet1)
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FREE(SheetNames)
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}
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printf("Worksheet Name: %s\n", wsname);
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/* get worksheet object */
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{
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VALPROP(Sheets, wb, "Sheets");
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ws = JS_GetPropertyStr(ctx, Sheets, wsname);
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FREE(Sheets)
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}
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}
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/* print CSV */
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{
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VALPROP(utils, XLSX, "utils")
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VALPROP(sheet_to_csv, utils, "sheet_to_csv")
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JSValue args[] = { ws };
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JSValue csv = JS_Call(ctx, sheet_to_csv, utils, 1, args);
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FREE(sheet_to_csv)
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FREE(utils)
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size_t csvlen; const char *csvstr = JS_ToCStringLen(ctx, &csvlen, csv);
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printf("%s\n", csvstr);
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FREE(csv)
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}
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FREE(ws)
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}
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FREE(wb)
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FREE(XLSX)
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CLEANUP(0)
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}
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