77a83962ac
BUG=skia: not waiting for (dead?) win builder NOTRY=True R=reed@google.com, mtklein@google.com Author: mtklein@chromium.org Review URL: https://codereview.chromium.org/348063002
357 lines
12 KiB
C++
357 lines
12 KiB
C++
/*
|
|
* Copyright 2013 Google Inc.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
#include "SkCommandLineFlags.h"
|
|
#include "SkTDArray.h"
|
|
|
|
DEFINE_bool(undefok, false, "Silently ignore unknown flags instead of crashing.");
|
|
|
|
bool SkFlagInfo::CreateStringFlag(const char* name, const char* shortName,
|
|
SkCommandLineFlags::StringArray* pStrings,
|
|
const char* defaultValue, const char* helpString) {
|
|
SkFlagInfo* info = SkNEW_ARGS(SkFlagInfo, (name, shortName, kString_FlagType, helpString));
|
|
info->fDefaultString.set(defaultValue);
|
|
|
|
info->fStrings = pStrings;
|
|
SetDefaultStrings(pStrings, defaultValue);
|
|
return true;
|
|
}
|
|
|
|
void SkFlagInfo::SetDefaultStrings(SkCommandLineFlags::StringArray* pStrings,
|
|
const char* defaultValue) {
|
|
pStrings->reset();
|
|
if (NULL == defaultValue) {
|
|
return;
|
|
}
|
|
// If default is "", leave the array empty.
|
|
size_t defaultLength = strlen(defaultValue);
|
|
if (defaultLength > 0) {
|
|
const char* const defaultEnd = defaultValue + defaultLength;
|
|
const char* begin = defaultValue;
|
|
while (true) {
|
|
while (begin < defaultEnd && ' ' == *begin) {
|
|
begin++;
|
|
}
|
|
if (begin < defaultEnd) {
|
|
const char* end = begin + 1;
|
|
while (end < defaultEnd && ' ' != *end) {
|
|
end++;
|
|
}
|
|
size_t length = end - begin;
|
|
pStrings->append(begin, length);
|
|
begin = end + 1;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static bool string_is_in(const char* target, const char* set[], size_t len) {
|
|
for (size_t i = 0; i < len; i++) {
|
|
if (0 == strcmp(target, set[i])) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Check to see whether string represents a boolean value.
|
|
* @param string C style string to parse.
|
|
* @param result Pointer to a boolean which will be set to the value in the string, if the
|
|
* string represents a boolean.
|
|
* @param boolean True if the string represents a boolean, false otherwise.
|
|
*/
|
|
static bool parse_bool_arg(const char* string, bool* result) {
|
|
static const char* trueValues[] = { "1", "TRUE", "true" };
|
|
if (string_is_in(string, trueValues, SK_ARRAY_COUNT(trueValues))) {
|
|
*result = true;
|
|
return true;
|
|
}
|
|
static const char* falseValues[] = { "0", "FALSE", "false" };
|
|
if (string_is_in(string, falseValues, SK_ARRAY_COUNT(falseValues))) {
|
|
*result = false;
|
|
return true;
|
|
}
|
|
SkDebugf("Parameter \"%s\" not supported.\n", string);
|
|
return false;
|
|
}
|
|
|
|
bool SkFlagInfo::match(const char* string) {
|
|
if (SkStrStartsWith(string, '-') && strlen(string) > 1) {
|
|
string++;
|
|
const SkString* compareName;
|
|
if (SkStrStartsWith(string, '-') && strlen(string) > 1) {
|
|
string++;
|
|
// There were two dashes. Compare against full name.
|
|
compareName = &fName;
|
|
} else {
|
|
// One dash. Compare against the short name.
|
|
compareName = &fShortName;
|
|
}
|
|
if (kBool_FlagType == fFlagType) {
|
|
// In this case, go ahead and set the value.
|
|
if (compareName->equals(string)) {
|
|
*fBoolValue = true;
|
|
return true;
|
|
}
|
|
if (SkStrStartsWith(string, "no") && strlen(string) > 2) {
|
|
string += 2;
|
|
// Only allow "no" to be prepended to the full name.
|
|
if (fName.equals(string)) {
|
|
*fBoolValue = false;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
int equalIndex = SkStrFind(string, "=");
|
|
if (equalIndex > 0) {
|
|
// The string has an equal sign. Check to see if the string matches.
|
|
SkString flag(string, equalIndex);
|
|
if (flag.equals(*compareName)) {
|
|
// Check to see if the remainder beyond the equal sign is true or false:
|
|
string += equalIndex + 1;
|
|
parse_bool_arg(string, fBoolValue);
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
return compareName->equals(string);
|
|
} else {
|
|
// Has no dash
|
|
return false;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
SkFlagInfo* SkCommandLineFlags::gHead;
|
|
SkString SkCommandLineFlags::gUsage;
|
|
|
|
void SkCommandLineFlags::SetUsage(const char* usage) {
|
|
gUsage.set(usage);
|
|
}
|
|
|
|
// Maximum line length for the help message.
|
|
#define LINE_LENGTH 80
|
|
|
|
static void print_help_for_flag(const SkFlagInfo* flag) {
|
|
SkDebugf("\t--%s", flag->name().c_str());
|
|
const SkString& shortName = flag->shortName();
|
|
if (shortName.size() > 0) {
|
|
SkDebugf(" or -%s", shortName.c_str());
|
|
}
|
|
SkDebugf(":\ttype: %s", flag->typeAsString().c_str());
|
|
if (flag->defaultValue().size() > 0) {
|
|
SkDebugf("\tdefault: %s", flag->defaultValue().c_str());
|
|
}
|
|
SkDebugf("\n");
|
|
const SkString& help = flag->help();
|
|
size_t length = help.size();
|
|
const char* currLine = help.c_str();
|
|
const char* stop = currLine + length;
|
|
while (currLine < stop) {
|
|
if (strlen(currLine) < LINE_LENGTH) {
|
|
// Only one line length's worth of text left.
|
|
SkDebugf("\t\t%s\n", currLine);
|
|
break;
|
|
}
|
|
int lineBreak = SkStrFind(currLine, "\n");
|
|
if (lineBreak < 0 || lineBreak > LINE_LENGTH) {
|
|
// No line break within line length. Will need to insert one.
|
|
// Find a space before the line break.
|
|
int spaceIndex = LINE_LENGTH - 1;
|
|
while (spaceIndex > 0 && currLine[spaceIndex] != ' ') {
|
|
spaceIndex--;
|
|
}
|
|
int gap;
|
|
if (0 == spaceIndex) {
|
|
// No spaces on the entire line. Go ahead and break mid word.
|
|
spaceIndex = LINE_LENGTH;
|
|
gap = 0;
|
|
} else {
|
|
// Skip the space on the next line
|
|
gap = 1;
|
|
}
|
|
SkDebugf("\t\t%.*s\n", spaceIndex, currLine);
|
|
currLine += spaceIndex + gap;
|
|
} else {
|
|
// the line break is within the limit. Break there.
|
|
lineBreak++;
|
|
SkDebugf("\t\t%.*s", lineBreak, currLine);
|
|
currLine += lineBreak;
|
|
}
|
|
}
|
|
SkDebugf("\n");
|
|
}
|
|
|
|
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:
|
|
SkDEBUGFAIL("Invalid flag type");
|
|
}
|
|
break;
|
|
}
|
|
flag = flag->next();
|
|
}
|
|
if (!flagMatched) {
|
|
SkString stripped(argv[i]);
|
|
while (stripped.startsWith('-')) {
|
|
stripped.remove(0, 1);
|
|
}
|
|
if (!FLAGS_undefok) {
|
|
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);
|
|
}
|
|
}
|
|
|
|
namespace {
|
|
|
|
template <typename Strings>
|
|
bool ShouldSkipImpl(const Strings& strings, const char* name) {
|
|
int count = strings.count();
|
|
size_t testLen = strlen(name);
|
|
bool anyExclude = count == 0;
|
|
for (int i = 0; i < strings.count(); ++i) {
|
|
const char* matchName = strings[i];
|
|
size_t matchLen = strlen(matchName);
|
|
bool matchExclude, matchStart, matchEnd;
|
|
if ((matchExclude = matchName[0] == '~')) {
|
|
anyExclude = true;
|
|
matchName++;
|
|
matchLen--;
|
|
}
|
|
if ((matchStart = matchName[0] == '^')) {
|
|
matchName++;
|
|
matchLen--;
|
|
}
|
|
if ((matchEnd = matchName[matchLen - 1] == '$')) {
|
|
matchLen--;
|
|
}
|
|
if (matchStart ? (!matchEnd || matchLen == testLen)
|
|
&& strncmp(name, matchName, matchLen) == 0
|
|
: matchEnd ? matchLen <= testLen
|
|
&& strncmp(name + testLen - matchLen, matchName, matchLen) == 0
|
|
: strstr(name, matchName) != 0) {
|
|
return matchExclude;
|
|
}
|
|
}
|
|
return !anyExclude;
|
|
}
|
|
|
|
} // namespace
|
|
|
|
bool SkCommandLineFlags::ShouldSkip(const SkTDArray<const char*>& strings, const char* name) {
|
|
return ShouldSkipImpl(strings, name);
|
|
}
|
|
bool SkCommandLineFlags::ShouldSkip(const StringArray& strings, const char* name) {
|
|
return ShouldSkipImpl(strings, name);
|
|
}
|