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// Copyright (c) the JPEG XL Project Authors. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
#ifndef TOOLS_ARGS_H_
#define TOOLS_ARGS_H_
// Helpers for parsing command line arguments. No include guard needed.
#include <stdio.h>
#include <string.h>
#include <string>
#include <vector>
#include "lib/extras/color_hints.h"
#include "lib/jxl/base/override.h"
#include "lib/jxl/base/status.h"
#include "lib/jxl/codec_in_out.h" // DecoderHints
#include "lib/jxl/gaborish.h"
#include "lib/jxl/modular/options.h"
namespace jpegxl {
namespace tools {
static inline bool ParseOverride(const char* arg, jxl::Override* out) {
const std::string s_arg(arg);
if (s_arg == "1") {
*out = jxl::Override::kOn;
return true;
}
if (s_arg == "0") {
*out = jxl::Override::kOff;
return true;
}
fprintf(stderr, "Invalid flag, %s must be 0 or 1\n", arg);
return JXL_FAILURE("Args");
}
static inline bool ParseUnsigned(const char* arg, size_t* out) {
char* end;
*out = static_cast<size_t>(strtoull(arg, &end, 0));
if (end[0] != '\0') {
fprintf(stderr, "Unable to interpret as unsigned integer: %s.\n", arg);
return JXL_FAILURE("Args");
}
return true;
}
static inline bool ParseUint32(const char* arg, uint32_t* out) {
size_t value = 0;
bool ret = ParseUnsigned(arg, &value);
if (ret) *out = value;
return ret;
}
static inline bool ParseSigned(const char* arg, int* out) {
char* end;
*out = static_cast<int>(strtol(arg, &end, 0));
if (end[0] != '\0') {
fprintf(stderr, "Unable to interpret as signed integer: %s.\n", arg);
return JXL_FAILURE("Args");
}
return true;
}
static inline bool ParseFloat(const char* arg, float* out) {
char* end;
*out = static_cast<float>(strtod(arg, &end));
if (end[0] != '\0') {
fprintf(stderr, "Unable to interpret as float: %s.\n", arg);
return JXL_FAILURE("Args");
}
return true;
}
static inline bool ParseFloatPair(const char* arg,
std::pair<float, float>* out) {
int parsed = sscanf(arg, "%f,%f", &out->first, &out->second);
if (parsed == 1) {
out->second = out->first;
} else if (parsed != 2) {
fprintf(stderr,
"Unable to interpret as float pair separated by a comma: %s.\n",
arg);
return JXL_FAILURE("Args");
}
return true;
}
static inline bool ParseDouble(const char* arg, double* out) {
char* end;
*out = static_cast<double>(strtod(arg, &end));
if (end[0] != '\0') {
fprintf(stderr, "Unable to interpret as double: %s.\n", arg);
return JXL_FAILURE("Args");
}
return true;
}
static inline bool ParseAndAppendKeyValue(const char* arg,
jxl::ColorHints* out) {
const char* eq = strchr(arg, '=');
if (!eq) {
fprintf(stderr, "Expected argument as 'key=value' but received '%s'\n",
arg);
return false;
}
std::string key(arg, eq);
out->Add(key, std::string(eq + 1));
return true;
}
static inline bool ParsePredictor(const char* arg, jxl::Predictor* out) {
char* end;
size_t p = static_cast<size_t>(strtoull(arg, &end, 0));
if (end[0] != '\0') {
fprintf(stderr, "Invalid predictor: %s.\n", arg);
return JXL_FAILURE("Args");
}
if (p >= jxl::kNumModularPredictors) {
fprintf(stderr, "Invalid predictor value %zu, must be less than %zu.\n", p,
jxl::kNumModularPredictors);
return JXL_FAILURE("Args");
}
*out = static_cast<jxl::Predictor>(p);
return true;
}
static inline bool ParseString(const char* arg, std::string* out) {
out->assign(arg);
return true;
}
static inline bool ParseCString(const char* arg, const char** out) {
*out = arg;
return true;
}
static inline bool SetBooleanTrue(bool* out) {
*out = true;
return true;
}
static inline bool SetBooleanFalse(bool* out) {
*out = false;
return true;
}
static inline bool IncrementUnsigned(size_t* out) {
(*out)++;
return true;
}
} // namespace tools
} // namespace jpegxl
#endif // TOOLS_ARGS_H_
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