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