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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "AnimationParser.h"
#include <android-base/stringprintf.h>
#include <android-base/strings.h>
#include <cutils/klog.h>
#include "animation.h"
#define LOGE(x...) do { KLOG_ERROR("charger", x); } while (0)
#define LOGW(x...) do { KLOG_WARNING("charger", x); } while (0)
#define LOGV(x...) do { KLOG_DEBUG("charger", x); } while (0)
namespace android {
// Lines consisting of only whitespace or whitespace followed by '#' can be ignored.
bool can_ignore_line(const char* str) {
for (int i = 0; str[i] != '\0' && str[i] != '#'; i++) {
if (!isspace(str[i])) return false;
}
return true;
}
bool remove_prefix(std::string_view line, const char* prefix, const char** rest) {
const char* str = line.data();
int start;
char c;
std::string format = base::StringPrintf(" %s%%n%%c", prefix);
if (sscanf(str, format.c_str(), &start, &c) != 1) {
return false;
}
*rest = &str[start];
return true;
}
bool parse_text_field(const char* in, animation::text_field* field) {
int* x = &field->pos_x;
int* y = &field->pos_y;
int* r = &field->color_r;
int* g = &field->color_g;
int* b = &field->color_b;
int* a = &field->color_a;
int start = 0, end = 0;
if (sscanf(in, "c c %d %d %d %d %n%*s%n", r, g, b, a, &start, &end) == 4) {
*x = CENTER_VAL;
*y = CENTER_VAL;
} else if (sscanf(in, "c %d %d %d %d %d %n%*s%n", y, r, g, b, a, &start, &end) == 5) {
*x = CENTER_VAL;
} else if (sscanf(in, "%d c %d %d %d %d %n%*s%n", x, r, g, b, a, &start, &end) == 5) {
*y = CENTER_VAL;
} else if (sscanf(in, "%d %d %d %d %d %d %n%*s%n", x, y, r, g, b, a, &start, &end) != 6) {
return false;
}
if (end == 0) return false;
field->font_file.assign(&in[start], end - start);
return true;
}
bool parse_animation_desc(const std::string& content, animation* anim) {
static constexpr const char* animation_prefix = "animation: ";
static constexpr const char* fail_prefix = "fail: ";
static constexpr const char* clock_prefix = "clock_display: ";
static constexpr const char* percent_prefix = "percent_display: ";
std::vector<animation::frame> frames;
for (const auto& line : base::Split(content, "\n")) {
animation::frame frame;
const char* rest;
if (can_ignore_line(line.c_str())) {
continue;
} else if (remove_prefix(line, animation_prefix, &rest)) {
int start = 0, end = 0;
if (sscanf(rest, "%d %d %n%*s%n", &anim->num_cycles, &anim->first_frame_repeats,
&start, &end) != 2 ||
end == 0) {
LOGE("Bad animation format: %s\n", line.c_str());
return false;
} else {
anim->animation_file.assign(&rest[start], end - start);
}
} else if (remove_prefix(line, fail_prefix, &rest)) {
anim->fail_file.assign(rest);
} else if (remove_prefix(line, clock_prefix, &rest)) {
if (!parse_text_field(rest, &anim->text_clock)) {
LOGE("Bad clock_display format: %s\n", line.c_str());
return false;
}
} else if (remove_prefix(line, percent_prefix, &rest)) {
if (!parse_text_field(rest, &anim->text_percent)) {
LOGE("Bad percent_display format: %s\n", line.c_str());
return false;
}
} else if (sscanf(line.c_str(), " frame: %d %d %d",
&frame.disp_time, &frame.min_level, &frame.max_level) == 3) {
frames.push_back(std::move(frame));
} else {
LOGE("Malformed animation description line: %s\n", line.c_str());
return false;
}
}
if (anim->animation_file.empty() || frames.empty()) {
LOGE("Bad animation description. Provide the 'animation: ' line and at least one 'frame: ' "
"line.\n");
return false;
}
anim->num_frames = frames.size();
anim->frames = new animation::frame[frames.size()];
std::copy(frames.begin(), frames.end(), anim->frames);
return true;
}
} // namespace android
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