//tritone.caf为声音文件
afconvert -f AIFC -d ima4 tritone.caf

#!/bin/sh
PROJ=`find . -name ‘*.xib‘ -o -name ‘*.[mh]‘`

for png in `find . -name ‘*.png‘`
do
    name=`basename $png`
    if ! grep -qhs "$name" "$PROJ"; then
        echo "$png is not referenced"
    fi
done

#include <stdio.h>

#define YEAR 2017
int main(int argc, const char * argv[]) {
    printf("Hello, %d!\n", YEAR);
    return 0;
}

clang -ccc-print-phases main.m

0: input, "main.m", objective-c
1: preprocessor, {0}, objective-c-cpp-output
2: compiler, {1}, ir
3: backend, {2}, assembler
4: assembler, {3}, object
5: linker, {4}, image
6: bind-arch, "x86_64", {5}, image

clang -fmodules -E main.m | open -f

# 1 "main.m"
# 1 "<built-in>" 1
# 1 "<built-in>" 3
# 342 "<built-in>" 3
# 1 "<command line>" 1
# 1 "<built-in>" 2
# 1 "main.m" 2


@import Darwin.C.stdio; /* clang -E: implicit import for "/usr/include/stdio.h" */

int main() {
    printf("Hello, %d!\n", 2017);

    return 0;
}

clang -fmodules -fsyntax-only -Xclang -dump-tokens main.m

annot_module_include ‘#include <stdio.h>

#define YEAR 2017
int main() {
    printf("Hello, %d!\n", YEAR);
//    NSLog(@"hello, %@", @"world");
    return 0;
}
‘        Loc=<main.m:9:1>
int ‘int‘     [StartOfLine]    Loc=<main.m:12:1>
identifier ‘main‘     [LeadingSpace]    Loc=<main.m:12:5>
l_paren ‘(‘        Loc=<main.m:12:9>
r_paren ‘)‘        Loc=<main.m:12:10>
l_brace ‘{‘     [LeadingSpace]    Loc=<main.m:12:12>
identifier ‘printf‘     [StartOfLine] [LeadingSpace]    Loc=<main.m:13:5>
l_paren ‘(‘        Loc=<main.m:13:11>
string_literal ‘"Hello, %d!\n"‘        Loc=<main.m:13:12>
comma ‘,‘        Loc=<main.m:13:26>
numeric_constant ‘2017‘     [LeadingSpace]    Loc=<main.m:13:28 <Spelling=main.m:11:14>>
r_paren ‘)‘        Loc=<main.m:13:32>
semi ‘;‘        Loc=<main.m:13:33>
return ‘return‘     [StartOfLine] [LeadingSpace]    Loc=<main.m:15:5>
numeric_constant ‘0‘     [LeadingSpace]    Loc=<main.m:15:12>
semi ‘;‘        Loc=<main.m:15:13>
r_brace ‘}‘     [StartOfLine]    Loc=<main.m:16:1>
eof ‘‘        Loc=<main.m:16:2>

clang -fmodules -fsyntax-only -Xclang -ast-dump main.m

TranslationUnitDecl 0x7fbdb7020cd0 <<invalid sloc>> <invalid sloc>
|-TypedefDecl 0x7fbdb7021218 <<invalid sloc>> <invalid sloc> implicit __int128_t ‘__int128‘
| `-BuiltinType 0x7fbdb7020f40 ‘__int128‘
|-TypedefDecl 0x7fbdb7021278 <<invalid sloc>> <invalid sloc> implicit __uint128_t ‘unsigned __int128‘
| `-BuiltinType 0x7fbdb7020f60 ‘unsigned __int128‘
|-TypedefDecl 0x7fbdb7021308 <<invalid sloc>> <invalid sloc> implicit SEL ‘SEL *‘
| `-PointerType 0x7fbdb70212d0 ‘SEL *‘
|   `-BuiltinType 0x7fbdb7021180 ‘SEL‘
|-TypedefDecl 0x7fbdb70213e8 <<invalid sloc>> <invalid sloc> implicit id ‘id‘
| `-ObjCObjectPointerType 0x7fbdb7021390 ‘id‘
|   `-ObjCObjectType 0x7fbdb7021360 ‘id‘
|-TypedefDecl 0x7fbdb70214c8 <<invalid sloc>> <invalid sloc> implicit Class ‘Class‘
| `-ObjCObjectPointerType 0x7fbdb7021470 ‘Class‘
|   `-ObjCObjectType 0x7fbdb7021440 ‘Class‘
|-ObjCInterfaceDecl 0x7fbdb7021518 <<invalid sloc>> <invalid sloc> implicit Protocol
|-TypedefDecl 0x7fbdb7021878 <<invalid sloc>> <invalid sloc> implicit __NSConstantString ‘struct __NSConstantString_tag‘
| `-RecordType 0x7fbdb7021680 ‘struct __NSConstantString_tag‘
|   `-Record 0x7fbdb70215e0 ‘__NSConstantString_tag‘
|-TypedefDecl 0x7fbdb7021908 <<invalid sloc>> <invalid sloc> implicit __builtin_ms_va_list ‘char *‘
| `-PointerType 0x7fbdb70218d0 ‘char *‘
|   `-BuiltinType 0x7fbdb7020d60 ‘char‘
|-TypedefDecl 0x7fbdb78049e8 <<invalid sloc>> <invalid sloc> implicit __builtin_va_list ‘struct __va_list_tag [1]‘
| `-ConstantArrayType 0x7fbdb7804990 ‘struct __va_list_tag [1]‘ 1
|   `-RecordType 0x7fbdb7804800 ‘struct __va_list_tag‘
|     `-Record 0x7fbdb7021958 ‘__va_list_tag‘
|-ImportDecl 0x7fbdb7805230 <main.m:9:1> col:1 implicit Darwin.C.stdio
|-FunctionDecl 0x7fbdb78052b8 <line:12:1, line:16:1> line:12:5 main ‘int ()‘
| `-CompoundStmt 0x7fbdb8861140 <col:12, line:16:1>
|   |-CallExpr 0x7fbdb88610a0 <line:13:5, col:32> ‘int‘
|   | |-ImplicitCastExpr 0x7fbdb8861088 <col:5> ‘int (*)(const char *, ...)‘ <FunctionToPointerDecay>
|   | | `-DeclRefExpr 0x7fbdb7805798 <col:5> ‘int (const char *, ...)‘ Function 0x7fbdb78053c0 ‘printf‘ ‘int (const char *, ...)‘
|   | |-ImplicitCastExpr 0x7fbdb88610f0 <col:12> ‘const char *‘ <BitCast>
|   | | `-ImplicitCastExpr 0x7fbdb88610d8 <col:12> ‘char *‘ <ArrayToPointerDecay>
|   | |   `-StringLiteral 0x7fbdb8861000 <col:12> ‘char [12]‘ lvalue "Hello, %d!\n"
|   | `-IntegerLiteral 0x7fbdb8861038 <line:11:14> ‘int‘ 2017
|   `-ReturnStmt 0x7fbdb8861128 <line:15:5, col:12>
|     `-IntegerLiteral 0x7fbdb8861108 <col:12> ‘int‘ 0
`-<undeserialized declarations>

clang -S -o - main.m | open -f

    //.section 指令指定接下来会执行哪一个段
    .section    __TEXT,__text,regular,pure_instructions
    .macosx_version_min 10, 12
    //.globl 指令说明 _main 是一个外部符号。这就是我们的 main() 函数。这个函数对于二进制文件外部来说是可见的，因为系统要调用它来运行可执行文件。
    .globl    _main
    //.align 指令指出了后面代码的对齐方式。在我们的代码中，后面的代码会按照 16(2^4) 字节对齐，如果需要的话，用 0x90 补齐。
    .p2align    4, 0x90
//main 函数的头部：
//_main 函数真正开始的地址。这个符号会被 export。二进制文件会有这个位置的一个引用。    
_main:                                  ## @main
    //.cfi_startproc 指令通常用于函数的开始处。CFI 是调用帧信息 (Call Frame Information) 的缩写。这个调用 帧 以松散的方式对应着一个函数。当开发者使用 debugger 和 step in 或 step out 时，实际上是 stepping in/out 一个调用帧。在 C 代码中，函数有自己的调用帧，当然，别的一些东西也会有类似的调用帧。.cfi_startproc 指令给了函数一个 .eh_frame 入口，这个入口包含了一些调用栈的信息（抛出异常时也是用其来展开调用帧堆栈的）。这个指令也会发送一些和具体平台相关的指令给 CFI。它与后面的 .cfi_endproc 相匹配，以此标记出 main() 函数结束的地方。
    .cfi_startproc
## BB#0:
    //ABI ( 应用二进制接口 application binary interface) 指定了函数调用是如何在汇编代码层面上工作的。在函数调用期间，ABI 会让 rbp 寄存器 (基础指针寄存器 base pointer register) 被保护起来。当函数调用返回时，确保 rbp 寄存器的值跟之前一样，这是属于 main 函数的职责。pushq %rbp 将 rbp 的值 push 到栈中，以便我们以后将其 pop 出来。
    pushq    %rbp
Ltmp0:
    //和.cfi_offset %rbp, -16一起，会输出一些关于生成调用堆栈展开和调试的信息。我们改变了堆栈和基础指针，而这两个指令可以告诉编译器它们都在哪儿，或者更确切的，它们可以确保之后调试器要使用这些信息时，能找到对应的东西。
    .cfi_def_cfa_offset 16
Ltmp1:
    .cfi_offset %rbp, -16
    //把局部变量放置到栈上
    movq    %rsp, %rbp
Ltmp2:
    .cfi_def_cfa_register %rbp
    //将栈指针移动 16 个字节，也就是函数会调用的位置
    subq    $16, %rsp
    //leaq 会将 L_.str 的指针加载到 rdi 寄存器中。
    leaq    L_.str(%rip), %rdi
    movl    $2017, %esi             ## imm = 0x7E1
    movl    $0, -4(%rbp)
    //把使用来存储参数的寄存器数量存储在寄存器 al 中
    movb    $0, %al
    //调用 printf() 函数
    callq    _printf
    //下面的代码将 ecx 寄存器设置为 0，并把 eax 寄存器的值保存至栈中，然后将 ect 中的 0 拷贝至 eax 中。ABI 规定 eax 将用来保存一个函数的返回值
    xorl    %esi, %esi
    movl    %eax, -8(%rbp)          ## 4-byte Spill
    movl    %esi, %eax
    //把堆栈指针 rsp 上移 32 字节
    addq    $16, %rsp
    //把之前存储至 rbp 中的值从栈中弹出来
    popq    %rbp
    //返回调用者， ret 会读取出栈的返回地址
    retq
    .cfi_endproc

    //.section 指令指出下面将要进入的段
    .section    __TEXT,__cstring,cstring_literals
//L_.str 标记运行在实际的代码中获取到字符串的一个指针
L_.str:                                 ## @.str
    //.asciz 指令告诉编译器输出一个以 ‘\0’ (null) 结尾的字符串。
    .asciz    "Hello, %d!\n"

    .section    __DATA,__objc_imageinfo,regular,no_dead_strip
L_OBJC_IMAGE_INFO:
    .long    0
    .long    64

//.subsections_via_symbols 指令是静态链接编辑器使用的
.subsections_via_symbols

clang -fmodules -c main.m -o main.o

callq    _printf

//main.m
#import "GofClass.h"

int main() {
    GofClass *gofClass = [[GofClass alloc] init];
    [gofClass doSomethingWithName:@"写代码"];
    return 0;
}

//GofClass.h
#import <Foundation/Foundation.h>

@interface GofClass : NSObject

/**
 做某项事情

 @param workName 事情名称
 */
- (void)doSomethingWithName:(NSString *)workName;

@end

//GofClass.m
#import "GofClass.h"

@implementation GofClass

- (void)doSomethingWithName:(NSString *)workName {
    NSLog(@"开始%@", workName);
}

@end

clang -fmodules -c main.m -o main.o
clang -fmodules -c GofClass.m -o GofClass.o
//生成可执行文件
clang main.o GofClass.o -o GofMachOFile

//指令
xcrun nm -nm main.o

//结果
                 (undefined) external _OBJC_CLASS_$_GofClass
                 (undefined) external ___CFConstantStringClassReference
                 (undefined) external _objc_msgSend
0000000000000000 (__TEXT,__text) external _main
00000000000000b0 (__TEXT,__ustring) non-external l_.str

//指令
xcrun nm -nm GofClass.o

//结果
                 (undefined) external _NSLog
                 (undefined) external _OBJC_CLASS_$_NSObject
                 (undefined) external _OBJC_METACLASS_$_NSObject
                 (undefined) external ___CFConstantStringClassReference
                 (undefined) external __objc_empty_cache
0000000000000000 (__TEXT,__text) non-external -[GofClass doSomethingWithName:]
0000000000000030 (__TEXT,__ustring) non-external l_.str
0000000000000070 (__DATA,__objc_const) non-external l_OBJC_METACLASS_RO_$_GofClass
00000000000000b8 (__DATA,__objc_const) non-external l_OBJC_$_INSTANCE_METHODS_GofClass
00000000000000d8 (__DATA,__objc_const) non-external l_OBJC_CLASS_RO_$_GofClass
0000000000000120 (__DATA,__objc_data) external _OBJC_METACLASS_$_GofClass
0000000000000148 (__DATA,__objc_data) external _OBJC_CLASS_$_GofClass

//指令
xcrun nm -nm GofMachOFile

//结果
                 (undefined) external _NSLog (from Foundation)
                 (undefined) external _OBJC_CLASS_$_NSObject (from CoreFoundation)
                 (undefined) external _OBJC_METACLASS_$_NSObject (from CoreFoundation)
                 (undefined) external ___CFConstantStringClassReference (from CoreFoundation)
                 (undefined) external __objc_empty_cache (from libobjc)
                 (undefined) external _objc_msgSend (from libobjc)
                 (undefined) external dyld_stub_binder (from libSystem)
0000000100000000 (__TEXT,__text) [referenced dynamically] external __mh_execute_header
0000000100000ea0 (__TEXT,__text) external _main
0000000100000f10 (__TEXT,__text) non-external -[GofClass doSomethingWithName:]
0000000100001140 (__DATA,__objc_data) external _OBJC_METACLASS_$_GofClass
0000000100001168 (__DATA,__objc_data) external _OBJC_CLASS_$_GofClass

#!usr/bin/python
## -*- coding: UTF-8 -*-
#
#使用简介：python linkmap.py XXX-LinkMap-normal-xxxarch.txt 或者 python linkmap.py XXX-LinkMap-normal-xxxarch.txt | open -f
#使用参数-g会统计每个模块.o的统计大小
#
__author__ = "zmjios"
__date__ = "2017-05-05"

import os
import re
import shutil
import sys

class SymbolModel:
    file = ""
    size = 0

def verify_linkmapfile(args):
    if len(sys.argv) < 2:
        print("请输入linkMap文件")
        return False

    path = args[1]

    if not os.path.isfile(path):
        print("请输入文件")
        return False

    file = open(path)
    content    = file.read()
    file.close()

    #查找是否存在# Object files:
    if content.find("# Object files:") == -1:
        print("输入linkmap文件非法")
        return False
    #查找是否存在# Sections:
    if content.find("# Sections:") == -1:
        print("输入linkmap文件非法")
        return False
    #查找是否存在# Symbols:
    if content.find("# Symbols:") == -1:
        print("输入linkmap文件非法")
        return False

    return True 

def symbolMapFromContent():
    symbolMap = {}
    reachFiles = False
    reachSections = False
    reachSymblos = False
    file = open(sys.argv[1])
    for line in file.readlines():
        if line.startswith("#"):
            if line.startswith("# Object files:"):
                reachFiles = True
            if line.startswith("# Sections:"):
                reachSections = True
            if line.startswith("# Symbols:"):
                reachSymblos = True
        else:
            if reachFiles == True and reachSections == False and reachSymblos == False:
                #查找 files 列表，找到所有.o文件
                location = line.find("]")
                if location != -1:
                    key = line[:location+1]
                    if  symbolMap.get(key) is not None:
                        continue
                    symbol = SymbolModel()
                    symbol.file = line[location + 1:]
                    symbolMap[key] = symbol
            elif reachFiles == True and reachSections == True and reachSymblos == True:
                #‘\t‘分割成三部分，分别对应的是Address，Size和 File  Name
                symbolsArray = line.split(‘\t‘)
                if len(symbolsArray) == 3:
                    fileKeyAndName = symbolsArray[2]
                    #16进制转10进制
                    size = int(symbolsArray[1],16)
                    location = fileKeyAndName.find(‘]‘)
                    if location != -1:
                        key = fileKeyAndName[:location + 1]
                        symbol = symbolMap.get(key)
                        if symbol is not None:
                            symbol.size = symbol.size + size
    file.close()

    return symbolMap

def sortSymbol(symbolList):
     return sorted(symbolList, key=lambda s: s.size,reverse = True)

def buildResultWithSymbols(symbols):
    results = ["文件大小\t文件名称\r\n"]
    totalSize = 0
    for symbol in symbols:
        results.append(calSymbol(symbol))
        totalSize += symbol.size
    results.append("总大小: %.2fM" % (totalSize/1024.0/1024.0))
    return results

def buildCombinationResultWithSymbols(symbols):
    #统计不同模块大小
    results = ["库大小\t库名称\r\n"]
    totalSize = 0
    combinationMap = {}

    for symbol in symbols:
        names = symbol.file.split(‘/‘)
        name = names[len(names) - 1].strip(‘\n‘)
        location = name.find("(")
        if name.endswith(")") and location != -1:
            component = name[:location]
            combinationSymbol = combinationMap.get(component)
            if combinationSymbol is None:
                combinationSymbol = SymbolModel()
                combinationMap[component] = combinationSymbol

            combinationSymbol.file = component
            combinationSymbol.size = combinationSymbol.size + symbol.size
        else:
            #symbol可能来自app本身的目标文件或者系统的动态库
            combinationMap[symbol.file] = symbol
    sortedSymbols = sortSymbol(combinationMap.values())

    for symbol in sortedSymbols:
        results.append(calSymbol(symbol))
        totalSize += symbol.size
    results.append("总大小: %.2fM" % (totalSize/1024.0/1024.0))

    return results

def calSymbol(symbol):
    size = ""
    if symbol.size / 1024.0 / 1024.0 > 1:
        size = "%.2fM" % (symbol.size / 1024.0 / 1024.0)
    else:
        size = "%.2fK" % (symbol.size / 1024.0)
    names = symbol.file.split(‘/‘)
    if len(names) > 0:
        size = "%s\t%s" % (size,names[len(names) - 1])
    return size

def analyzeLinkMap():
    if verify_linkmapfile(sys.argv) == True:
        print("**********正在开始解析*********")
        symbolDic = symbolMapFromContent()
        symbolList = sortSymbol(symbolDic.values())
        if len(sys.argv) >= 3 and sys.argv[2] == "-g":
            results = buildCombinationResultWithSymbols(symbolList)
        else:
            results = buildResultWithSymbols(symbolList)
        for result in results:
            print(result)
        print("***********解析结束***********")


if __name__ == "__main__":
    analyzeLinkMap()

#!/usr/bin/env python
# 使用方法：python py文件 Xcode工程文件目录

# -*- coding:UTF-8 -*-
import sys
import os
import re

if len(sys.argv) == 1:
    print ‘请在.py文件后面输入工程路径‘ 
    sys.exit()

projectPath = sys.argv[1]
print ‘工程路径为%s‘ % projectPath

resourcefile = []
totalClass = set([])
unusedFile = []
pbxprojFile = []

def Getallfile(rootDir): 
    for lists in os.listdir(rootDir): 
        path = os.path.join(rootDir, lists) 
        if os.path.isdir(path): 
            Getallfile(path) 
        else:
            ex = os.path.splitext(path)[1]  
            if ex == ‘.m‘ or ex == ‘.mm‘ or ex == ‘.h‘:
                resourcefile.append(path)
            elif ex == ‘.pbxproj‘:
                pbxprojFile.append(path)

Getallfile(projectPath)

print ‘工程中所使用的类列表为：‘
for ff in resourcefile:
    print ff

for e in pbxprojFile:
    f = open(e, ‘r‘)
    content = f.read()
    array = re.findall(r‘\s+([\w,\+]+\.[h,m]{1,2})\s+‘,content)
    see = set(array)
    totalClass = totalClass|see
    f.close()

print ‘工程中所引用的.h与.m及.mm文件‘
for x in totalClass:
    print x
print ‘--------------------------‘

for x in resourcefile:
    ex = os.path.splitext(x)[1]
    if ex == ‘.h‘: #.h头文件可以不用检查
        continue
    fileName = os.path.split(x)[1]
    print fileName
    if fileName not in totalClass:
        unusedFile.append(x)

for x in unusedFile:
    resourcefile.remove(x)

print ‘未引用到工程的文件列表为：‘

writeFile = []
for unImport in unusedFile:
    ss = ‘未引用到工程的文件:%s\n‘ % unImport
    writeFile.append(ss)
    print unImport

unusedFile = []

allClassDic = {}

for x in resourcefile:
    f = open(x,‘r‘)
    content = f.read()
    array = re.findall(r‘@interface\s+([\w,\+]+)\s+:‘,content)
    for xx in array:
        allClassDic[xx] = x
    f.close()

print ‘所有类及其路径：‘
for x in allClassDic.keys():
    print x,‘:‘,allClassDic[x]

def checkClass(path,className):
    f = open(path,‘r‘)
    content = f.read()
    if os.path.splitext(path)[1] == ‘.h‘:
        match = re.search(r‘:\s+(%s)\s+‘ % className,content)
    else:
        match = re.search(r‘(%s)\s+\w+‘ % className,content)
    f.close()
    if match:
        return True

ivanyuan = 0
totalIvanyuan = len(allClassDic.keys())

for key in allClassDic.keys():
    path = allClassDic[key]
    
    index = resourcefile.index(path)
    count = len(resourcefile)
    
    used = False
    
    offset = 1
    ivanyuan += 1
    print ‘完成‘,ivanyuan,‘共:‘,totalIvanyuan,‘path:%s‘%path
    
    
    while index+offset < count or index-offset > 0:
        if index+offset < count:
            subPath = resourcefile[index+offset]
            if checkClass(subPath,key):
                used = True
                break
        if index - offset > 0:
            subPath = resourcefile[index-offset]
            if checkClass(subPath,key):
                used = True
                break
        offset += 1

    if not used:
        str = ‘未使用的类：%s 文件路径：%s\n‘ %(key,path)
        unusedFile.append(str)
        writeFile.append(str)

for p in unusedFile:
    print ‘未使用的类：%s‘ % p

filePath = os.path.split(projectPath)[0]
writePath = ‘%s/未使用的类.txt‘ % filePath
f = open(writePath,‘w+‘)
f.writelines(writeFile)
f.close()