void SkCommandLineFlags::Parse(int argc, char** argv) {
// Only allow calling this function once.
static bool gOnce;
if (gOnce) {
SkDebugf("Parse should only be called once at the beginning of main!\n");
SkASSERT(false);
return;
}
gOnce = true;
bool helpPrinted = 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])) {
// Print help message.
SkTDArray<const char*> helpFlags;
for (int j = i + 1; j < argc; j++) {
if (SkStrStartsWith(argv[j], '-')) {
break;
}
helpFlags.append(1, &argv[j]);
}
if (0 == helpFlags.count()) {
// 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");
SkFlagInfo* flag = SkCommandLineFlags::gHead;
while (flag != NULL) {
// If no flags followed --help, print them all
bool printFlag = 0 == helpFlags.count();
if (!printFlag) {
for (int k = 0; k < helpFlags.count(); k++) {
if (flag->name().equals(helpFlags[k]) ||
flag->shortName().equals(helpFlags[k])) {
printFlag = true;
helpFlags.remove(k);
break;
}
}
}
if (printFlag) {
print_help_for_flag(flag);
}
flag = flag->next();
}
if (helpFlags.count() > 0) {
SkDebugf("Requested help for unrecognized flags:\n");
for (int k = 0; k < helpFlags.count(); k++) {
SkDebugf("\t--%s\n", helpFlags[k]);
}
}
helpPrinted = true;
}
if (!helpPrinted) {
bool flagMatched = false;
SkFlagInfo* flag = gHead;
while (flag != NULL) {
if (flag->match(argv[i])) {
flagMatched = true;
switch (flag->getFlagType()) {
case SkFlagInfo::kBool_FlagType:
// Can be handled by match, above, but can also be set by the next
// string.
if (i+1 < argc && !SkStrStartsWith(argv[i+1], '-')) {
i++;
bool value;
if (parse_bool_arg(argv[i], &value)) {
flag->setBool(value);
}
}
break;
case SkFlagInfo::kString_FlagType:
flag->resetStrings();
// Add all arguments until another flag is reached.
while (i+1 < argc && !SkStrStartsWith(argv[i+1], '-')) {
i++;
flag->append(argv[i]);
}
break;
case SkFlagInfo::kInt_FlagType:
i++;
flag->setInt(atoi(argv[i]));
break;
case SkFlagInfo::kDouble_FlagType:
i++;
flag->setDouble(atof(argv[i]));
break;
default:
SkASSERT(!"Invalid flag type");
}
break;
}
flag = flag->next();
}
if (!flagMatched) {
SkDebugf("Got unknown flag \"%s\". Exiting.\n", argv[i]);
exit(-1);
}
}
}
// Since all of the flags have been set, release the memory used by each
// flag. FLAGS_x can still be used after this.
SkFlagInfo* flag = gHead;
gHead = NULL;
while (flag != NULL) {
SkFlagInfo* next = flag->next();
SkDELETE(flag);
flag = next;
}
if (helpPrinted) {
exit(0);
}
}
void SkCommandLineFlags::Parse(int argc, char** argv) {
// Only allow calling this function once.
static bool gOnce;
if (gOnce) {
SkDebugf("Parse should only be called once at the beginning of main!\n");
SkASSERT(false);
return;
}
gOnce = true;
bool helpPrinted = 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])) {
// Print help message.
SkTDArray<const char*> helpFlags;
for (int j = i + 1; j < argc; j++) {
if (SkStrStartsWith(argv[j], '-')) {
break;
}
helpFlags.append(1, &argv[j]);
}
if (0 == helpFlags.count()) {
// 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 (0 == helpFlags.count()) {
// If no flags followed --help, print them all
SkTDArray<SkFlagInfo*> allFlags;
for (SkFlagInfo* flag = SkCommandLineFlags::gHead; flag;
flag = flag->next()) {
allFlags.push(flag);
}
SkTQSort(&allFlags[0], &allFlags[allFlags.count() - 1],
CompareFlagsByName());
for (int i = 0; i < allFlags.count(); ++i) {
print_help_for_flag(allFlags[i]);
if (allFlags[i]->extendedHelp().size() > 0) {
SkDebugf(" Use '--help %s' for more information.\n",
allFlags[i]->name().c_str());
}
}
} else {
for (SkFlagInfo* flag = SkCommandLineFlags::gHead; flag;
flag = flag->next()) {
for (int k = 0; k < helpFlags.count(); k++) {
if (flag->name().equals(helpFlags[k]) ||
flag->shortName().equals(helpFlags[k])) {
print_extended_help_for_flag(flag);
helpFlags.remove(k);
break;
}
}
}
}
if (helpFlags.count() > 0) {
SkDebugf("Requested help for unrecognized flags:\n");
for (int k = 0; k < helpFlags.count(); k++) {
SkDebugf(" --%s\n", helpFlags[k]);
}
}
helpPrinted = true;
}
if (!helpPrinted) {
bool flagMatched = false;
SkFlagInfo* flag = gHead;
while (flag != nullptr) {
if (flag->match(argv[i])) {
flagMatched = true;
switch (flag->getFlagType()) {
case SkFlagInfo::kBool_FlagType:
// Can be handled by match, above, but can also be set by the next
// string.
if (i+1 < argc && !SkStrStartsWith(argv[i+1], '-')) {
i++;
bool value;
if (parse_bool_arg(argv[i], &value)) {
flag->setBool(value);
}
}
break;
case SkFlagInfo::kString_FlagType:
flag->resetStrings();
// Add all arguments until another flag is reached.
while (i+1 < argc) {
char* end = nullptr;
// Negative numbers aren't flags.
ignore_result(strtod(argv[i+1], &end));
if (end == argv[i+1] && SkStrStartsWith(argv[i+1], '-')) {
break;
}
i++;
flag->append(argv[i]);
}
break;
case SkFlagInfo::kInt_FlagType:
i++;
flag->setInt(atoi(argv[i]));
break;
case SkFlagInfo::kDouble_FlagType:
i++;
flag->setDouble(atof(argv[i]));
break;
default:
SkDEBUGFAIL("Invalid flag type");
}
break;
}
flag = flag->next();
}
if (!flagMatched) {
#if SK_BUILD_FOR_MAC
if (SkStrStartsWith(argv[i], "NSDocumentRevisions")
|| SkStrStartsWith(argv[i], "-NSDocumentRevisions")) {
i++; // skip YES
} else
#endif
if (FLAGS_undefok) {
SkDebugf("FYI: ignoring unknown flag '%s'.\n", argv[i]);
} else {
SkDebugf("Got unknown flag '%s'. Exiting.\n", argv[i]);
exit(-1);
}
}
}
}
// Since all of the flags have been set, release the memory used by each
// flag. FLAGS_x can still be used after this.
SkFlagInfo* flag = gHead;
gHead = nullptr;
while (flag != nullptr) {
SkFlagInfo* next = flag->next();
delete flag;
flag = next;
}
if (helpPrinted) {
exit(0);
}
}
