forked from sheetjs/docs.sheetjs.com
89 lines
2.5 KiB
C++
89 lines
2.5 KiB
C++
/* this sample is based off of the official ChakraCore examples */
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#include "ChakraCore.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string>
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#include <cstring>
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#define FAIL_CHECK(cmd) \
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do { \
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JsErrorCode errCode = cmd; \
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if (errCode != JsNoError) { \
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printf("Error %d at '%s'\n", errCode, #cmd); \
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return 1; \
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} \
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} while(0)
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using namespace std;
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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 EVAL_FILE(path) {\
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JsValueRef filename; \
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JsValueRef result; \
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FAIL_CHECK(JsCreateString(path, strlen(path), &filename)); \
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size_t len; const char* script = read_file(path, &len);\
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JsValueRef src;\
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FAIL_CHECK(JsCreateExternalArrayBuffer((void*)script, len, nullptr, nullptr, &src));\
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FAIL_CHECK(JsRun(src, cookie++, filename, JsParseScriptAttributeNone, &result)); \
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}
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int main(int argc, char *argv[]) {
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JsRuntimeHandle runtime;
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JsContextRef context;
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JsValueRef result;
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size_t cookie = 0;
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FAIL_CHECK(JsCreateRuntime(JsRuntimeAttributeNone, nullptr, &runtime));
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FAIL_CHECK(JsCreateContext(runtime, &context));
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FAIL_CHECK(JsSetCurrentContext(context));
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JsValueRef global;
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FAIL_CHECK(JsGetGlobalObject(&global));
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EVAL_FILE("shim.min.js")
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EVAL_FILE("xlsx.full.min.js")
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JsValueRef buf_str;
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FAIL_CHECK(JsCreateString("buf", strlen("buf"), &buf_str));
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size_t len; char *buf = read_file(argv[1], &len);
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JsValueRef ab;
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FAIL_CHECK(JsCreateExternalArrayBuffer((void*)buf, len, nullptr, nullptr, &ab));
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FAIL_CHECK(JsObjectSetProperty(global, buf_str, ab, true));
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JsValueRef fname;
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FAIL_CHECK(JsCreateString("<script>", strlen("<script>"), &fname));
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const char* script_str =
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"var wb = XLSX.read(buf);"
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"var ws = wb.Sheets[wb.SheetNames[0]];"
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"XLSX.utils.sheet_to_csv(ws);";
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JsValueRef script;
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FAIL_CHECK(JsCreateExternalArrayBuffer((void*)script_str, (size_t)strlen(script_str), nullptr, nullptr, &script));
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FAIL_CHECK(JsRun(script, cookie++, fname, JsParseScriptAttributeNone, &result));
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free(buf);
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FAIL_CHECK(JsCopyString(result, nullptr, 0, &len));
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buf = (char*)malloc(len + 1);
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FAIL_CHECK(JsCopyString(result, buf, len + 1, nullptr));
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buf[len] = 0;
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printf("%s\n", buf);
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free(buf);
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FAIL_CHECK(JsSetCurrentContext(JS_INVALID_REFERENCE));
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FAIL_CHECK(JsDisposeRuntime(runtime));
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return 0;
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} |