Zach Anderson
27c79f9459
Change-Id: I8d4f3a892a51bed8b922961bd74bcad727f66508 Reviewed-on: https://dart-review.googlesource.com/73280 Commit-Queue: Zach Anderson <zra@google.com> Reviewed-by: Alexander Markov <alexmarkov@google.com> Reviewed-by: Siva Annamalai <asiva@google.com>
100 lines
2.7 KiB
C++
100 lines
2.7 KiB
C++
// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "bin/options.h"
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namespace dart {
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namespace bin {
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OptionProcessor* OptionProcessor::first_ = NULL;
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bool OptionProcessor::IsValidFlag(const char* name,
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const char* prefix,
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intptr_t prefix_length) {
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const intptr_t name_length = strlen(name);
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return ((name_length > prefix_length) &&
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(strncmp(name, prefix, prefix_length) == 0));
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}
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const char* OptionProcessor::ProcessOption(const char* option,
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const char* name) {
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const intptr_t length = strlen(name);
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for (intptr_t i = 0; i < length; i++) {
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if (option[i] != name[i]) {
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if ((name[i] == '_') && (option[i] == '-')) {
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continue;
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}
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return NULL;
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}
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}
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return option + length;
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}
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bool OptionProcessor::TryProcess(const char* option,
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CommandLineOptions* vm_options) {
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for (OptionProcessor* p = first_; p != NULL; p = p->next_) {
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if (p->Process(option, vm_options)) {
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return true;
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}
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}
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return false;
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}
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bool OptionProcessor::ProcessEnvironmentOption(
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const char* arg,
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CommandLineOptions* vm_options,
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dart::SimpleHashMap** environment) {
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ASSERT(arg != NULL);
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ASSERT(environment != NULL);
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if (*arg == '\0') {
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return false;
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}
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if (*arg != '-') {
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return false;
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}
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if (*(arg + 1) != 'D') {
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return false;
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}
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arg = arg + 2;
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if (*arg == '\0') {
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return true;
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}
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if (*environment == NULL) {
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*environment = new SimpleHashMap(&SimpleHashMap::SameStringValue, 4);
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}
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// Split the name=value part of the -Dname=value argument.
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char* name;
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char* value = NULL;
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const char* equals_pos = strchr(arg, '=');
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if (equals_pos == NULL) {
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// No equal sign (name without value) currently not supported.
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Log::PrintErr("No value given to -D option\n");
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return true;
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}
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int name_len = equals_pos - arg;
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if (name_len == 0) {
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Log::PrintErr("No name given to -D option\n");
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return true;
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}
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// Split name=value into name and value.
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name = reinterpret_cast<char*>(malloc(name_len + 1));
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strncpy(name, arg, name_len);
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name[name_len] = '\0';
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value = strdup(equals_pos + 1);
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SimpleHashMap::Entry* entry =
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(*environment)
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->Lookup(GetHashmapKeyFromString(name),
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SimpleHashMap::StringHash(name), true);
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ASSERT(entry != NULL); // Lookup adds an entry if key not found.
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if (entry->value != NULL) {
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free(name);
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free(entry->value);
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}
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entry->value = value;
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return true;
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}
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} // namespace bin
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} // namespace dart
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