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output flags once

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When asking for help on more than one item,
e.g. foo -h me -h oh -h my just print Flags:
once.

TBR=scroggo@google.com

Change-Id: I67080c7390e6bacf4c36096304dd959229fdd07b
Reviewed-on: https://skia-review.googlesource.com/21660
Reviewed-by: Cary Clark <caryclark@skia.org>
Commit-Queue: Cary Clark <caryclark@skia.org>
This commit is contained in:
Cary Clark 2017-07-06 08:33:19 -04:00 committed by Skia Commit-Bot
parent bdf6c62a19
commit 0933f33996
1 changed files with 5 additions and 2 deletions
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7
tools/flags/SkCommandLineFlags.cpp
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@ -233,6 +233,7 @@ void SkCommandLineFlags::Parse(int argc, char** argv) {
gOnce = true;
bool helpPrinted = false;
bool flagsPrinted = false;
// Loop over argv, starting with 1, since the first is just the name of the program.
for (int i = 1; i < argc; i++) {
if (0 == strcmp("-h", argv[i]) || 0 == strcmp("--help", argv[i])) {
@ -248,8 +249,10 @@ void SkCommandLineFlags::Parse(int argc, char** argv) {
// Only print general help message if help for specific flags is not requested.
SkDebugf("%s\n%s\n", argv[0], gUsage.c_str());
}
SkDebugf("Flags:\n");
if (!flagsPrinted) {
SkDebugf("Flags:\n");
flagsPrinted = true;
}
if (0 == helpFlags.count()) {
// If no flags followed --help, print them all
SkTDArray<SkFlagInfo*> allFlags;