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Support outputting to stdout in the as tool.

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This commit is contained in:
Lei Zhang 2016-02-18 17:43:23 -05:00
parent eb6ae976c6
commit d5bdd9dced
1 changed files with 4 additions and 2 deletions
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6
tools/as/as.cpp
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@ -46,7 +46,7 @@ Options:
-h Print this help.
-o <filename> Set the output filename.
-o <filename> Set the output filename. Use '-' to mean stdout.
)",
argv0, argv0);
}
@ -121,13 +121,15 @@ int main(int argc, char** argv) {
return error;
}
if (FILE* fp = fopen(outFile, "wb")) {
const bool use_stdout = outFile[0] == '-' && outFile[1] == 0;
if (FILE* fp = (use_stdout ? stdout : fopen(outFile, "wb"))) {
size_t written =
fwrite(binary->code, sizeof(uint32_t), (size_t)binary->wordCount, fp);
if (binary->wordCount != written) {
fprintf(stderr, "error: could not write to file '%s'\n", outFile);
return 1;
}
fclose(fp);
} else {
fprintf(stderr, "error: could not open file '%s'\n", outFile);
return 1;