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#include "config.h"
#include "DumpRenderTree.h"
#include <algorithm>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string>
class CommandTokenizer {
public:
explicit CommandTokenizer(const std::string& input)
: m_input(input)
, m_posNextSeparator(0)
{
pump();
}
bool hasNext() const;
std::string next();
private:
void pump();
static const char kSeparator = '\'';
const std::string& m_input;
std::string m_next;
size_t m_posNextSeparator;
};
void CommandTokenizer::pump()
{
if (m_posNextSeparator == std::string::npos || m_posNextSeparator == m_input.size()) {
m_next = std::string();
return;
}
size_t start = m_posNextSeparator ? m_posNextSeparator + 1 : 0;
m_posNextSeparator = m_input.find(kSeparator, start);
size_t size = m_posNextSeparator == std::string::npos ? std::string::npos : m_posNextSeparator - start;
m_next = std::string(m_input, start, size);
}
std::string CommandTokenizer::next()
{
ASSERT(hasNext());
std::string oldNext = m_next;
pump();
return oldNext;
}
bool CommandTokenizer::hasNext() const
{
return !m_next.empty();
}
NO_RETURN static void die(const std::string& inputLine)
{
fprintf(stderr, "Unexpected input line: %s\n", inputLine.c_str());
exit(1);
}
TestCommand parseInputLine(const std::string& inputLine)
{
TestCommand result;
CommandTokenizer tokenizer(inputLine);
if (!tokenizer.hasNext())
die(inputLine);
result.pathOrURL = tokenizer.next();
if (!tokenizer.hasNext())
return result;
std::string arg = tokenizer.next();
if (arg != std::string("-p") && arg != std::string("--pixel-test"))
die(inputLine);
result.shouldDumpPixels = true;
if (tokenizer.hasNext())
result.expectedPixelHash = tokenizer.next();
return result;
}
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