1 /*
2 * Copyright 2013 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "SkLua.h"
9 #include "SkLuaCanvas.h"
10 #include "SkPicture.h"
11 #include "SkCommandLineFlags.h"
12 #include "SkGraphics.h"
13 #include "SkStream.h"
14 #include "SkData.h"
15 #include "picture_utils.h"
16 #include "SkOSFile.h"
17 #include "SkOSPath.h"
18
19 #include <stdlib.h>
20
21 extern "C" {
22 #include "lua.h"
23 #include "lualib.h"
24 #include "lauxlib.h"
25 }
26
27 static const char gStartCanvasFunc[] = "sk_scrape_startcanvas";
28 static const char gEndCanvasFunc[] = "sk_scrape_endcanvas";
29 static const char gAccumulateFunc[] = "sk_scrape_accumulate";
30 static const char gSummarizeFunc[] = "sk_scrape_summarize";
31
32 // Example usage for the modulo flag:
33 // for i in {0..5}; do lua_pictures --skpPath SKP_PATH -l YOUR_SCRIPT --modulo $i 6 &; done
34 static DEFINE_string(modulo, "", "[--modulo <remainder> <divisor>]: only run tests for which "
35 "testIndex %% divisor == remainder.");
36 static DEFINE_string2(skpPath, r, "", "Read this .skp file or .skp files from this dir");
37 static DEFINE_string2(luaFile, l, "", "File containing lua script to run");
38 static DEFINE_string2(headCode, s, "", "Optional lua code to call at beginning");
39 static DEFINE_string2(tailFunc, s, "", "Optional lua function to call at end");
40 static DEFINE_bool2(quiet, q, false, "Silence all non-error related output");
41
load_picture(const char path[])42 static sk_sp<SkPicture> load_picture(const char path[]) {
43 std::unique_ptr<SkStream> stream = SkStream::MakeFromFile(path);
44 if (stream) {
45 return SkPicture::MakeFromStream(stream.get());
46 }
47 return nullptr;
48 }
49
call_canvas(lua_State * L,SkLuaCanvas * canvas,const char pictureFile[],const char funcName[])50 static void call_canvas(lua_State* L, SkLuaCanvas* canvas,
51 const char pictureFile[], const char funcName[]) {
52 lua_getglobal(L, funcName);
53 if (!lua_isfunction(L, -1)) {
54 int t = lua_type(L, -1);
55 SkDebugf("--- expected %s function %d, ignoring.\n", funcName, t);
56 lua_settop(L, -2);
57 } else {
58 canvas->pushThis();
59 lua_pushstring(L, pictureFile);
60 if (lua_pcall(L, 2, 0, 0) != LUA_OK) {
61 SkDebugf("lua err: %s\n", lua_tostring(L, -1));
62 }
63 }
64 }
65
main(int argc,char ** argv)66 int main(int argc, char** argv) {
67 SkCommandLineFlags::SetUsage("apply lua script to .skp files.");
68 SkCommandLineFlags::Parse(argc, argv);
69
70 if (FLAGS_skpPath.isEmpty()) {
71 SkDebugf(".skp files or directories are required.\n");
72 exit(-1);
73 }
74 if (FLAGS_luaFile.isEmpty()) {
75 SkDebugf("missing luaFile(s)\n");
76 exit(-1);
77 }
78
79 const char* summary = gSummarizeFunc;
80 if (!FLAGS_tailFunc.isEmpty()) {
81 summary = FLAGS_tailFunc[0];
82 }
83
84 SkAutoGraphics ag;
85 SkLua L(summary);
86
87 for (int i = 0; i < FLAGS_luaFile.count(); ++i) {
88 sk_sp<SkData> data(SkData::MakeFromFileName(FLAGS_luaFile[i]));
89 if (!data) {
90 data = SkData::MakeEmpty();
91 }
92 if (!FLAGS_quiet) {
93 SkDebugf("loading %s...\n", FLAGS_luaFile[i]);
94 }
95 if (!L.runCode(data->data(), data->size())) {
96 SkDebugf("failed to load luaFile %s\n", FLAGS_luaFile[i]);
97 exit(-1);
98 }
99 }
100
101 if (!FLAGS_headCode.isEmpty()) {
102 L.runCode(FLAGS_headCode[0]);
103 }
104
105 int moduloRemainder = -1;
106 int moduloDivisor = -1;
107 SkString moduloStr;
108
109 if (FLAGS_modulo.count() == 2) {
110 moduloRemainder = atoi(FLAGS_modulo[0]);
111 moduloDivisor = atoi(FLAGS_modulo[1]);
112 if (moduloRemainder < 0 || moduloDivisor <= 0 || moduloRemainder >= moduloDivisor) {
113 SkDebugf("invalid modulo values.\n");
114 return -1;
115 }
116 }
117
118 for (int i = 0; i < FLAGS_skpPath.count(); i ++) {
119 SkTArray<SkString> paths;
120 if (sk_isdir(FLAGS_skpPath[i])) {
121 // Add all .skp in this directory.
122 const SkString directory(FLAGS_skpPath[i]);
123 SkString filename;
124 SkOSFile::Iter iter(FLAGS_skpPath[i], "skp");
125 while(iter.next(&filename)) {
126 paths.push_back() = SkOSPath::Join(directory.c_str(), filename.c_str());
127 }
128 } else {
129 // Add this as an .skp itself.
130 paths.push_back() = FLAGS_skpPath[i];
131 }
132
133 for (int i = 0; i < paths.count(); i++) {
134 if (moduloRemainder >= 0) {
135 if ((i % moduloDivisor) != moduloRemainder) {
136 continue;
137 }
138 moduloStr.printf("[%d.%d] ", i, moduloDivisor);
139 }
140 const char* path = paths[i].c_str();
141 if (!FLAGS_quiet) {
142 SkDebugf("scraping %s %s\n", path, moduloStr.c_str());
143 }
144
145 auto pic(load_picture(path));
146 if (pic.get()) {
147 std::unique_ptr<SkLuaCanvas> canvas(
148 new SkLuaCanvas(SkScalarCeilToInt(pic->cullRect().width()),
149 SkScalarCeilToInt(pic->cullRect().height()),
150 L.get(), gAccumulateFunc));
151
152 call_canvas(L.get(), canvas.get(), path, gStartCanvasFunc);
153 canvas->drawPicture(pic);
154 call_canvas(L.get(), canvas.get(), path, gEndCanvasFunc);
155
156 } else {
157 SkDebugf("failed to load\n");
158 }
159 }
160 }
161 return 0;
162 }
163