截取字符串，查找字符串，替换字符串——C语言描述
截取字符串，查找字符串，替换字符串——C语言描述
0 测试用例框架
1 截取字符串
OP_STATUS SubString(char *Sub, const char *Str, const unsigned int Pos, const unsigned int SubLen)
用Sub返回串Str的第Pos个字符起长度为SubLen的字串
入参应该满足条件如下:其中“StrLen(Str) – Pos + 1”中“+ 1”是要把Pos的字符也算进去
1 <= Pos <= StrLen(Str1)
0 <= SubLen <= StrLen(Str) – Pos + 1
代码：
OP_STATUS SubString(char *Sub, const char *Str, const unsigned int Pos, const unsigned int SubLen) {
char *TraSub = Sub;
char *TraStr = Str;
unsigned int Num = 0;
printf("SubString start\n");
if (NULL == Str || NULL == Sub) {
return ERROR;
}
if (Pos < 1 || Pos > StringLen(Str)) {
return ERROR;
}
if (SubLen > StringLen(Str) - Pos + 1) {
return ERROR;
}
/*TraStr move to Pos*/
for (Num = 0; Num < Pos - 1; ++Num) {
TraStr++;
}
/*Copy Str into Sub, lenth is SubLen*/
for (Num = 0; Num < SubLen; ++Num) {
*TraSub = *TraStr;
TraStr++;
TraSub++;
}
*TraSub = '\0';
printf("SubString end\n");
return SUCCESS;
}
测试用例代码：
void TestSubString(void) {
/*Test01*/
char Str01[] = "abc";
unsigned int SubPos01 = 1;
unsigned int SubLen01 = 1;
char *Sub01 = NULL;
char Res01[] = "a";
/*Test02*/
char Str02[] = "abc";
unsigned int SubPos02 = 2;
unsigned int SubLen02 = 2;
char *Sub02 = NULL;
char Res02[] = "bc";
Sub01 = (char *)malloc(SubLen01 + 1);
if (Sub01 == NULL) {
goto EXIT;
}
Sub02 = (char *)malloc(SubLen02 + 1);
if (Sub02 == NULL) {
goto EXIT;
}
printf("-------Test start----------\n");
InitNum();
/*Test01*/
printf("\n-------Test 01----------\n");
SubString(Sub01, Str01, SubPos01, SubLen01);
printf("Sub01 = %s\n", Sub01);
StringCompareTest(Res01, Sub01);
/*Test02*/
printf("\n-------Test 02----------\n");
SubString(Sub02, Str02, SubPos02, SubLen02);
printf("Sub02 = %s\n\n", Sub02);
StringCompareTest(Res02, Sub02);
/*Test Result*/
printf("\n-------Test result----------\n");
TestResult();
EXIT:
if (Sub01 != NULL) {
free(Sub01);
Sub01 = NULL;
}
if (Sub02 != NULL) {
free(Sub02);
Sub02 = NULL;
}
}
结果：
-------Test start----------
-------Test 01----------
SubString start
SubString end
Sub01 = a
StrCopmare start
Str1 = a
Str2 = a
ret = 0
StrCopmare end
StringCompareTest test succeed!
-------Test 02----------
SubString start
SubString end
Sub02 = bc
StrCopmare start
Str1 = bc
Str2 = bc
ret = 0
StrCopmare end
StringCompareTest test succeed!
-------Test result----------
Print test result;
TestNum = 2, PassNum = 2, FaildNum = 0
2 查找字符串
unsigned int FindStrIndex(char *Str, const char *FindStr, const unsigned int FindStrPos)
需求：在Str串的Pos位置之后，找第一个FinStr,找到返回Str的下标，找不到返回0。
方法：
-
使用SubString函数截取字串，长度为FinStr的长度
-
使用截取的字串与FinStr进行比较
代码：
unsigned int FindStrIndex(char *Str, const char *FindStr, const unsigned int FindStrPos) {
unsigned int StrLenth = StringLen(Str);
unsigned int FindStrLenth = StringLen(FindStr);
char *Sub = NULL;
unsigned int Index = 0;
unsigned int FindStrIndex = 0;
OP_STATUS Status = SUCCESS;
printf("FindStrIndex start\n");
if (Str == NULL || FindStr == NULL || FindStrPos == 0 || FindStrPos > StrLenth - FindStrLenth + 1) {
printf("Invaild parameter!\n");
FindStrIndex = 0;
goto EXIT;
}
Sub = (char *)malloc(StringLen(Str) + 1);
if (Sub == NULL) {
FindStrIndex = 0;
goto EXIT;
}
for (Index = FindStrPos - 1; Index <= StrLenth - FindStrLenth + 1; ++Index) {
Status = SubString(Sub, Str, Index, FindStrLenth);
if (Status == SUCCESS) {
if (StrCopmare(FindStr, Sub) == 0) {
FindStrIndex = Index;
goto EXIT;
}
}
}
EXIT:
if (Sub != NULL) {
free(Sub);
Sub = NULL;
}
printf("FindStrIndex = %d\n", FindStrIndex);
printf("FindStrIndex end\n");
return FindStrIndex;
}
测试用例代码：
void TestFindStrIndex(void) {
/*Test01*/
char Str01[] = "abcdef";
char FindStr01[] = "bc";
unsigned int FindStrPos01 = 1;
unsigned int FindRes01;
unsigned int ComPos01 = 2;
/*Test02*/
char Str02[] = "abcdef";
char FindStr02[] = "ef";
unsigned int FindStrPos02 = 2;
unsigned int FindRes02;
unsigned int ComPos02 = 5;
/*Test03*/
char Str03[] = "abcdef";
char FindStr03[] = "ee";
unsigned int FindStrPos03 = 1;
unsigned int FindRes03;
unsigned int ComPos03 = 0;
printf("-------Test start----------\n");
InitNum();
/*Test01*/
printf("-------Test 01----------\n");
FindRes01 = FindStrIndex(Str01, FindStr01, FindStrPos01);
ValueTest(ComPos01, FindRes01);
/*Test02*/
printf("\n-------Test 02----------\n");
FindRes02 = FindStrIndex(Str02, FindStr02, FindStrPos02);
ValueTest(ComPos02, FindRes02);
/*Test03*/
printf("\n-------Test 03----------\n");
FindRes03 = FindStrIndex(Str03, FindStr03, FindStrPos03);
ValueTest(ComPos03, FindRes03);
/*Test Result*/
printf("\n-------Test result----------\n");
TestResult();
}
结果：
-------Test start----------
-------Test 01----------
FindStrIndex start
SubString start
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = ab
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = bc
ret = 0
StrCopmare end
FindStrIndex = 2
FindStrIndex end
ValueTest test succeed!-------Test 02----------
FindStrIndex start
SubString start
SubString end
StrCopmare start
Str1 = ef
Str2 = ab
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = ef
Str2 = bc
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = ef
Str2 = cd
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = ef
Str2 = de
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = ef
Str2 = ef
ret = 0
StrCopmare end
FindStrIndex = 5
FindStrIndex end
ValueTest test succeed!-------Test 03----------
FindStrIndex start
SubString start
SubString start
SubString end
StrCopmare start
Str1 = ee
Str2 = ab
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = ee
Str2 = bc
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = ee
Str2 = cd
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = ee
Str2 = de
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = ee
Str2 = ef
ret = -1
StrCopmare end
FindStrIndex = 0
FindStrIndex end
ValueTest test succeed!-------Test result----------
Print test result;
TestNum = 3, PassNum = 3, FaildNum = 0
3 替换字符串
OP_STATUS StrReplace(const char *Str3, const char *StrRep, char *NewStrRep)
3.1 需求
Str3，StrRep和NewStrRep都存在，用子串NewStrRep替换主串Str3中出现的所有的子串StrRep。
3.2 方法
（1）使用查找字符串的FindStrIndex函数，查找相应的子串，查到位置为FindPosRet
（2）查到就使用MoveBackStr函数主串移动，从FindPosRet的位置开始移动，移动为长度为子串NewStrRep的长度减去NewStrRep子串的长度。（值为0不移动，大于往后移动，小于0往前移动）
（3）再使用CopyStrWhithoutTail函数将要替换的子串拷进主串
3.3 移动字串MoveBackStr
void MoveBackStr(char *Str, const unsigned int Pos, const int MvLen)
Str表示主串，Pos表示查找后的位置，MvLen表示要移动的长度，值为NewStrRep的长度减去NewStrRep子串的长度。（值为0不移动，大于往后移动，小于0往前移动）。
当MvLen大于0时，字串往后移动
当MvLen小于0时，字串往前移动
当MvLen等于0时，字串往前移动
代码：
OP_STATUS MoveBackStr(char *Str, const unsigned int Pos, const int MvLen) {
OP_STATUS Status = SUCCESS;
char *TraStr = Str;
unsigned int Index = 0;
int TraPos = Pos - 1;
unsigned int TraStrLen = StringLen(TraStr);
int TraMvLen = MvLen;
printf("MoveBackStr start\n");
if (TraStr == NULL || Pos > TraStrLen + 1) {
Status = INVALID_PARAMETER;
goto EXIT;
}
/*
Example 1:
Pos = 1
ab = 2
RepLen = 4
MvLen = 4 - 2 = 2
Pos
0 1 2 3 4 5
a b c \0
a b c \0
----------------------------
Example 2:
Pos = 2
bcde = 4
RepLen = 2
MvLen = 2 - 4 = -2
Pos
0 1 2 3 4 5 6
a b c d e f \0
a d e f \0
*/
if (TraMvLen > 0) {
for (Index = TraStrLen + 1 + TraMvLen; Index >= TraPos + TraMvLen; --Index) {
TraStr[Index] = TraStr[Index - TraMvLen];
}
} else if (TraMvLen < 0) {
TraMvLen = 0 - TraMvLen;
printf("TraMvLen = %d\n", TraMvLen);
for (Index = TraPos; Index <= TraStrLen + 1 - TraMvLen; ++Index) {
TraStr[Index] = TraStr[Index + TraMvLen];
}
}
printf("TraStr = %s\n", TraStr);
EXIT:
printf("MoveBackStr end\n");
return Status;
}
测试用例代码：
void TestMoveBackStr(void) {
/*Test01*/
char Str01[20] = "abc";
unsigned int Pos01 = 1;
int MvLen01 = 2;
char CpmStr01[] = "ababc";
/*Test02*/
char Str02[20] = "abcdef";
unsigned int Pos02 = 2;
int MvLen02 = -2;
char CpmStr02[] = "adef";
printf("-------Test start----------\n");
InitNum();
/*Test01*/
printf("-------Test 01----------\n");
MoveBackStr(Str01, Pos01, MvLen01);
printf("Str01 = %s\n", Str01);
StringCompareTest(CpmStr01, Str01);
/*Test02*/
printf("\n-------Test 02----------\n");
MoveBackStr(Str02, Pos02, MvLen02);
printf("Str02 = %s\n", Str02);
StringCompareTest(CpmStr02, Str02);
/*Test Result*/
printf("\n-------Test result----------\n");
TestResult();
}
结果：
-------Test start----------
-------Test 01----------
MoveBackStr start
TraStr = ababc
MoveBackStr end
Str01 = ababc
StrCopmare start
Str1 = ababc
Str2 = ababc
ret = 0
StrCopmare end
StringCompareTest test succeed!
-------Test 02----------
MoveBackStr start
TraMvLen = 2
TraStr = adef
MoveBackStr end
Str02 = adef
StrCopmare start
Str1 = adef
Str2 = adef
ret = 0
StrCopmare end
StringCompareTest test succeed!
-------Test result----------
Print test result;
TestNum = 2, PassNum = 2, FaildNum = 0
3.4 拷贝子串函数 CopyStrWhithoutTail
OP_STATUS CopyStrWhithoutTail(char *Str, const unsigned int Pos, const char *CpyStr)
Str是传进去要处理的字符串，Pos是Str的位置，CpyStr是指要替换的子串
代码：
OP_STATUS CopyStrWhithoutTail(char *Str, const unsigned int Pos, const char *CpyStr) {
OP_STATUS Status = SUCCESS;
char *TraStr = Str;
char *TraCpyStr = CpyStr;
unsigned int TraPos = Pos - 1;
unsigned int TraStrLen = StringLen(TraStr);
unsigned int TraCpStrLen = StringLen(TraCpyStr);
unsigned int Index = 0;
printf("CopyStrWhithoutTail start\n");
if (TraStr == NULL || Pos > TraStrLen + 1) {
Status = INVALID_PARAMETER;
goto EXIT;
}
for (Index = TraPos; Index < TraPos + TraCpStrLen; ++Index) {
TraStr[Index] = *TraCpyStr;
++TraCpyStr;
}
//for (Index = TraPos; Index < TraPos + TraCpStrLen; ++Index) {
// *(TraStr + Index) = *TraCpyStr;
// ++TraCpyStr;
//}
printf("TraStr = %s\n", TraStr);
EXIT:
printf("CopyStrWhithoutTail end\n");
return Status;
}
测试用例代码：
void TestCopyStrWhithoutTail(void) {
char Str01[20] = "ababc";
unsigned int Pos01 = 1;
char RepStr01[] = "1234";
char CpmStr01[] = "1234c";
printf("-------Test start----------\n");
InitNum();
printf("-------Test 01----------\n");
CopyStrWhithoutTail(Str01, Pos01, RepStr01);
printf("Str01 = %s\n", Str01);
StringCompareTest(CpmStr01, Str01);
/*Test Result*/
printf("\n-------Test result----------\n");
TestResult();
}
结果：
-------Test start----------
-------Test 01----------
CopyStrWhithoutTail start
TraStr = 1234c
CopyStrWhithoutTail end
Str01 = 1234c
StrCopmare start
Str1 = 1234c
Str2 = 1234c
ret = 0
StrCopmare end
StringCompareTest test succeed!
-------Test result----------
Print test result;
TestNum = 1, PassNum = 1, FaildNum = 0
3.5 查找字符串，移动字符串和拷贝字符 函数TestFindStrIndexToMoveBackStrToCopyStrWhithoutTail
void TestFindStrIndexToMoveBackStrToCopyStrWhithoutTail(void)
先后调用FindStrIndex函数，MoveBackStr函数和CopyStrWhithoutTail函数来实现字符串的替换
代码：
void TestFindStrIndexToMoveBackStrToCopyStrWhithoutTail(void) {
/*Test01*/
char Str01[20] = "abcdef";
unsigned int Pos01 = 1;
unsigned int RetPos01;
char FindStr01[] = "bc";
char RepStr01[] = "12";
int MvLen01 = StringLen(RepStr01) - StringLen(FindStr01);
char CmpStr01[] = "a12def";
/*Test02*/
char Str02[20] = "abcdef";
unsigned int Pos02 = 1;
unsigned int RetPos02;
char FindStr02[] = "bc";
char RepStr02[] = "1234";
int MvLen02 = StringLen(RepStr02) - StringLen(FindStr02);
char CmpStr02[] = "a1234def";
/*Test03*/
char Str03[20] = "abcdef";
unsigned int Pos03 = 1;
unsigned int RetPos03;
char FindStr03[] = "bcde";
char RepStr03[] = "12";
int MvLen03 = StringLen(RepStr03) - StringLen(FindStr03);
char CmpStr03[] = "a12f";
/*Test04*/
char Str04[20] = "abcdef";
unsigned int Pos04 = 1;
unsigned int RetPos04;
char FindStr04[] = "cdef";
char RepStr04[] = "1234";
int MvLen04 = StringLen(RepStr04) - StringLen(FindStr04);
char CmpStr04[] = "ab1234";
/*Test05*/
char Str05[20] = "abcdef";
unsigned int Pos05 = 1;
unsigned int RetPos05;
char FindStr05[] = "cdef";
char RepStr05[] = "123456";
int MvLen05 = StringLen(RepStr05) - StringLen(FindStr05);
char CmpStr05[] = "ab123456";
/*Test06*/
char Str06[20] = "abcdef";
unsigned int Pos06 = 1;
unsigned int RetPos06;
char FindStr06[] = "cdef";
char RepStr06[] = "12";
int MvLen06 = StringLen(RepStr06) - StringLen(FindStr06);
char CmpStr06[] = "ab12";
printf("-------Test start----------\n");
InitNum();
/*Test01*/
printf("-------Test 01----------\n");
RetPos01 = FindStrIndex(Str01, FindStr01, Pos01);
printf("RetPos01 = %d\n", RetPos01);
MoveBackStr(Str01, RetPos01, MvLen01);
printf("Str01 = %s\n", Str01);
CopyStrWhithoutTail(Str01, RetPos01, RepStr01);
printf("Str01 = %s\n", Str01);
StringCompareTest(CmpStr01, Str01);
/*Test02*/
printf("\n-------Test 02----------\n");
RetPos02 = FindStrIndex(Str02, FindStr02, Pos02);
printf("RetPos02 = %d\n", RetPos02);
MoveBackStr(Str02, RetPos02, MvLen02);
printf("Str02 = %s\n", Str02);
CopyStrWhithoutTail(Str02, RetPos02, RepStr02);
printf("Str02 = %s\n", Str02);
StringCompareTest(CmpStr02, Str02);
/*Test03*/
printf("\n-------Test 03----------\n");
RetPos03 = FindStrIndex(Str03, FindStr03, Pos03);
printf("RetPos03 = %d\n", RetPos03);
MoveBackStr(Str03, RetPos03, MvLen03);
printf("Str03 = %s\n", Str03);
CopyStrWhithoutTail(Str03, RetPos03, RepStr03);
printf("Str03 = %s\n", Str03);
StringCompareTest(CmpStr03, Str03);
/*Test04*/
printf("\n-------Test 04----------\n");
RetPos04 = FindStrIndex(Str04, FindStr04, Pos04);
printf("RetPos04 = %d\n", RetPos04);
MoveBackStr(Str04, RetPos04, MvLen04);
printf("Str04 = %s\n", Str04);
CopyStrWhithoutTail(Str04, RetPos04, RepStr04);
printf("Str04 = %s\n", Str04);
StringCompareTest(CmpStr04, Str04);
/*Test05*/
printf("\n-------Test 05----------\n");
RetPos05 = FindStrIndex(Str05, FindStr05, Pos05);
printf("RetPos05 = %d\n", RetPos05);
MoveBackStr(Str05, RetPos05, MvLen05);
printf("Str05 = %s\n", Str05);
CopyStrWhithoutTail(Str05, RetPos05, RepStr05);
printf("Str05 = %s\n", Str05);
StringCompareTest(CmpStr05, Str05);
/*Test06*/
printf("\n-------Test 06----------\n");
RetPos06 = FindStrIndex(Str06, FindStr06, Pos06);
printf("RetPos06 = %d\n", RetPos06);
MoveBackStr(Str06, RetPos06, MvLen06);
printf("Str06 = %s\n", Str06);
CopyStrWhithoutTail(Str06, RetPos06, RepStr06);
printf("Str06 = %s\n", Str06);
StringCompareTest(CmpStr06, Str06);
/*Test Result*/
printf("\n-------Test result----------\n");
TestResult();
}
结果：
-------Test start----------
-------Test 01----------
FindStrIndex start
SubString start
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = ab
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = bc
ret = 0
StrCopmare end
FindStrIndex = 2
FindStrIndex end
RetPos01 = 2
MoveBackStr start
TraStr = abcdef
MoveBackStr end
Str01 = abcdef
CopyStrWhithoutTail start
TraStr = a12def
CopyStrWhithoutTail end
Str01 = a12def
StrCopmare start
Str1 = a12def
Str2 = a12def
ret = 0
StrCopmare end
StringCompareTest test succeed!
-------Test 02----------
FindStrIndex start
SubString start
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = ab
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = bc
ret = 0
StrCopmare end
FindStrIndex = 2
FindStrIndex end
RetPos02 = 2
MoveBackStr start
TraStr = abcbcdef
MoveBackStr end
Str02 = abcbcdef
CopyStrWhithoutTail start
TraStr = a1234def
CopyStrWhithoutTail end
Str02 = a1234def
StrCopmare start
Str1 = a1234def
Str2 = a1234def
ret = 0
StrCopmare end
StringCompareTest test succeed!
-------Test 03----------
FindStrIndex start
SubString start
SubString start
SubString end
StrCopmare start
Str1 = bcde
Str2 = abcd
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = bcde
Str2 = bcde
ret = 0
StrCopmare end
FindStrIndex = 2
FindStrIndex end
RetPos03 = 2
MoveBackStr start
TraMvLen = 2
TraStr = adef
MoveBackStr end
Str03 = adef
CopyStrWhithoutTail start
TraStr = a12f
CopyStrWhithoutTail end
Str03 = a12f
StrCopmare start
Str1 = a12f
Str2 = a12f
ret = 0
StrCopmare end
StringCompareTest test succeed!
-------Test 04----------
FindStrIndex start
SubString start
SubString start
SubString end
StrCopmare start
Str1 = cdef
Str2 = abcd
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = cdef
Str2 = bcde
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = cdef
Str2 = cdef
ret = 0
StrCopmare end
FindStrIndex = 3
FindStrIndex end
RetPos04 = 3
MoveBackStr start
TraStr = abcdef
MoveBackStr end
Str04 = abcdef
CopyStrWhithoutTail start
TraStr = ab1234
CopyStrWhithoutTail end
Str04 = ab1234
StrCopmare start
Str1 = ab1234
Str2 = ab1234
ret = 0
StrCopmare end
StringCompareTest test succeed!
-------Test 05----------
FindStrIndex start
SubString start
SubString start
SubString end
StrCopmare start
Str1 = cdef
Str2 = abcd
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = cdef
Str2 = bcde
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = cdef
Str2 = cdef
ret = 0
StrCopmare end
FindStrIndex = 3
FindStrIndex end
RetPos05 = 3
MoveBackStr start
TraStr = abcdcdef
MoveBackStr end
Str05 = abcdcdef
CopyStrWhithoutTail start
TraStr = ab123456
CopyStrWhithoutTail end
Str05 = ab123456
StrCopmare start
Str1 = ab123456
Str2 = ab123456
ret = 0
StrCopmare end
StringCompareTest test succeed!
-------Test 06----------
FindStrIndex start
SubString start
SubString start
SubString end
StrCopmare start
Str1 = cdef
Str2 = abcd
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = cdef
Str2 = bcde
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = cdef
Str2 = cdef
ret = 0
StrCopmare end
FindStrIndex = 3
FindStrIndex end
RetPos06 = 3
MoveBackStr start
TraMvLen = 2
TraStr = abef
MoveBackStr end
Str06 = abef
CopyStrWhithoutTail start
TraStr = ab12
CopyStrWhithoutTail end
Str06 = ab12
StrCopmare start
Str1 = ab12
Str2 = ab12
ret = 0
StrCopmare end
StringCompareTest test succeed!
-------Test result----------
Print test result;
TestNum = 6, PassNum = 6, FaildNum = 0
3.6 替换字符串总流程函数 StrReplace
OP_STATUS StrReplace(char *Str1, const char *FindStr, const char *StrRep)
St1为主串，FindStr为查找子串，StrRep为要替换的子串
先后调用FindStrIndex函数，MoveBackStr函数和CopyStrWhithoutTail进行实现
代码：
OP_STATUS StrReplace(char *Str1, const char *FindStr, const char *StrRep) {
OP_STATUS Status = SUCCESS;
char *TraStr1 = Str1;
char *TraFindStr = FindStr;
char *TraStrRep = StrRep;
unsigned int TraStr1Len = StringLen(TraStr1);
unsigned int FindStrLen = StringLen(TraFindStr);
unsigned int TraStrRepLen = StringLen(TraStrRep);
unsigned int Pos;
unsigned int FindPosRet = 0;
int MvLen = TraStrRepLen - FindStrLen;
printf("MvLen = %d\n", MvLen);
if (TraStr1 == NULL || TraFindStr == NULL || TraStrRep == NULL) {
printf("Invaild parameter!\n");
Status = INVALID_PARAMETER;
goto EXIT;
}
Pos = 1;
do {
printf("Pos = %d\n", Pos);
/*Find TraStrRep*/
FindPosRet = FindStrIndex(TraStr1, TraFindStr, Pos);
printf("FindRetPos = %d\n", FindPosRet);
if (FindPosRet == 0) {
break;
}
/*Replace with TraNewStrRep*/
/*Move back*/
Status = MoveBackStr(TraStr1, FindPosRet, MvLen);
if (Status != SUCCESS) {
printf("Invaild parameter!\n");
goto EXIT;
}
printf("TraStr1 = %s\n", TraStr1);
/*CopyStrWhithoutTail*/
Status = CopyStrWhithoutTail(TraStr1, FindPosRet, TraStrRep);
if (Status != SUCCESS) {
printf("Invaild parameter!\n");
goto EXIT;
}
printf("TraStr1 = %s\n", TraStr1);
Pos = FindPosRet + TraStrRepLen;
} while (FindPosRet != 0);
EXIT:
return Status;
}
测试用例代码：
void TestStrReplace(void) {
OP_STATUS Status;
/*Test01*/
char Str01[30] = "abcdef";
char FindStr01[] = "bc";
char RepStr01[] = "12";
char CmpStr01[] = "a12def";
/*Test02*/
char Str02[30] = "abcdef";
char FindStr02[] = "bc";
char RepStr02[] = "1234";
char CmpStr02[] = "a1234def";
/*Test03*/
char Str03[30] = "abcdef";
char FindStr03[] = "bcde";
char RepStr03[] = "12";
char CmpStr03[] = "a12f";
/*Test04*/
char Str04[30] = "abcdef";
char FindStr04[] = "cdef";
char RepStr04[] = "1234";
char CmpStr04[] = "ab1234";
/*Test05*/
char Str05[30] = "abcdef";
char FindStr05[] = "cdef";
char RepStr05[] = "123456";
char CmpStr05[] = "ab123456";
/*Test06*/
char Str06[30] = "abcdef";
char FindStr06[] = "cdef";
char RepStr06[] = "12";
char CmpStr06[] = "ab12";
/*Test07*/
char Str07[30] = "abcbcfbc";
char FindStr07[] = "bc";
char RepStr07[] = "12";
char CmpStr07[] = "a1212f12";
/*Test08*/
char Str08[30] = "abcbcfbc";
char FindStr08[] = "bc";
char RepStr08[] = "1234";
char CmpStr08[] = "a12341234f1234";
/*Test09*/
char Str09[30] = "abcbcfbc";
char FindStr09[] = "bc";
char RepStr09[] = "1";
char CmpStr09[] = "a11f1";
printf("-------Test start----------\n");
InitNum();
/*Test01*/
printf("-------Test 01----------\n");
StrReplace(Str01, FindStr01, RepStr01);
printf("Str01 = %s\n", Str01);
StringCompareTest(CmpStr01, Str01);
/*Test02*/
printf("\n-------Test 02----------\n");
StrReplace(Str02, FindStr02, RepStr02);
printf("Str02 = %s\n", Str02);
StringCompareTest(CmpStr02, Str02);
/*Test03*/
printf("\n-------Test 03----------\n");
StrReplace(Str03, FindStr03, RepStr03);
printf("Str03 = %s\n", Str03);
StringCompareTest(CmpStr03, Str03);
/*Test04*/
printf("\n-------Test 04----------\n");
StrReplace(Str04, FindStr04, RepStr04);
printf("Str04 = %s\n", Str04);
StringCompareTest(CmpStr04, Str04);
/*Test05*/
printf("\n-------Test 05----------\n");
StrReplace(Str05, FindStr05, RepStr05);
printf("Str05 = %s\n", Str05);
StringCompareTest(CmpStr05, Str05);
/*Test06*/
printf("\n-------Test 06----------\n");
StrReplace(Str06, FindStr06, RepStr06);
printf("Str06 = %s\n", Str06);
StringCompareTest(CmpStr06, Str06);
/*Test07*/
printf("\n-------Test 07----------\n");
StrReplace(Str07, FindStr07, RepStr07);
printf("Str07 = %s\n", Str07);
StringCompareTest(CmpStr07, Str07);
/*Test08*/
printf("\n-------Test 08----------\n");
StrReplace(Str08, FindStr08, RepStr08);
printf("Str08 = %s\n", Str08);
StringCompareTest(CmpStr08, Str08);
/*Test09*/
printf("\n-------Test 09----------\n");
StrReplace(Str09, FindStr09, RepStr09);
printf("Str09 = %s\n", Str09);
StringCompareTest(CmpStr09, Str09);
/*Test Result*/
printf("\n-------Test result----------\n");
TestResult();
}
结果：
TraStr1 = abef
CopyStrWhithoutTail start
TraStr = ab12
CopyStrWhithoutTail end
TraStr1 = ab12
Pos = 5
FindStrIndex start
Invaild parameter!
FindStrIndex = 0
FindStrIndex end
FindRetPos = 0
Str06 = ab12
StrCopmare start
Str1 = ab12
Str2 = ab12
ret = 0
StrCopmare end
StringCompareTest test succeed!
-------Test 07----------
MvLen = 0
Pos = 1
FindStrIndex start
SubString start
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = ab
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = bc
ret = 0
StrCopmare end
FindStrIndex = 2
FindStrIndex end
FindRetPos = 2
MoveBackStr start
TraStr = abcbcfbc
MoveBackStr end
TraStr1 = abcbcfbc
CopyStrWhithoutTail start
TraStr = a12bcfbc
CopyStrWhithoutTail end
TraStr1 = a12bcfbc
Pos = 4
FindStrIndex start
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = 2b
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = bc
ret = 0
StrCopmare end
FindStrIndex = 4
FindStrIndex end
FindRetPos = 4
MoveBackStr start
TraStr = a12bcfbc
MoveBackStr end
TraStr1 = a12bcfbc
CopyStrWhithoutTail start
TraStr = a1212fbc
CopyStrWhithoutTail end
TraStr1 = a1212fbc
Pos = 6
FindStrIndex start
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = 2f
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = fb
ret = -1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = bc
ret = 0
StrCopmare end
FindStrIndex = 7
FindStrIndex end
FindRetPos = 7
MoveBackStr start
TraStr = a1212fbc
MoveBackStr end
TraStr1 = a1212fbc
CopyStrWhithoutTail start
TraStr = a1212f12
CopyStrWhithoutTail end
TraStr1 = a1212f12
Pos = 9
FindStrIndex start
Invaild parameter!
FindStrIndex = 0
FindStrIndex end
FindRetPos = 0
Str07 = a1212f12
StrCopmare start
Str1 = a1212f12
Str2 = a1212f12
ret = 0
StrCopmare end
StringCompareTest test succeed!
-------Test 08----------
MvLen = 2
Pos = 1
FindStrIndex start
SubString start
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = ab
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = bc
ret = 0
StrCopmare end
FindStrIndex = 2
FindStrIndex end
FindRetPos = 2
MoveBackStr start
TraStr = abcbcbcfbc
MoveBackStr end
TraStr1 = abcbcbcfbc
CopyStrWhithoutTail start
TraStr = a1234bcfbc
CopyStrWhithoutTail end
TraStr1 = a1234bcfbc
Pos = 6
FindStrIndex start
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = 4b
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = bc
ret = 0
StrCopmare end
FindStrIndex = 6
FindStrIndex end
FindRetPos = 6
MoveBackStr start
TraStr = a1234bcbcfbc
MoveBackStr end
TraStr1 = a1234bcbcfbc
CopyStrWhithoutTail start
TraStr = a12341234fbc
CopyStrWhithoutTail end
TraStr1 = a12341234fbc
Pos = 10
FindStrIndex start
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = 4f
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = fb
ret = -1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = bc
ret = 0
StrCopmare end
FindStrIndex = 11
FindStrIndex end
FindRetPos = 11
MoveBackStr start
TraStr = a12341234fbcbc
MoveBackStr end
TraStr1 = a12341234fbcbc
CopyStrWhithoutTail start
TraStr = a12341234f1234
CopyStrWhithoutTail end
TraStr1 = a12341234f1234
Pos = 15
FindStrIndex start
Invaild parameter!
FindStrIndex = 0
FindStrIndex end
FindRetPos = 0
Str08 = a12341234f1234
StrCopmare start
Str1 = a12341234f1234
Str2 = a12341234f1234
ret = 0
StrCopmare end
StringCompareTest test succeed!
-------Test 09----------
MvLen = -1
Pos = 1
FindStrIndex start
SubString start
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = ab
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = bc
ret = 0
StrCopmare end
FindStrIndex = 2
FindStrIndex end
FindRetPos = 2
MoveBackStr start
TraMvLen = 1
TraStr = acbcfbc
MoveBackStr end
TraStr1 = acbcfbc
CopyStrWhithoutTail start
TraStr = a1bcfbc
CopyStrWhithoutTail end
TraStr1 = a1bcfbc
Pos = 3
FindStrIndex start
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = 1b
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = bc
ret = 0
StrCopmare end
FindStrIndex = 3
FindStrIndex end
FindRetPos = 3
MoveBackStr start
TraMvLen = 1
TraStr = a1cfbc
MoveBackStr end
TraStr1 = a1cfbc
CopyStrWhithoutTail start
TraStr = a11fbc
CopyStrWhithoutTail end
TraStr1 = a11fbc
Pos = 4
FindStrIndex start
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = 1f
ret = 1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = fb
ret = -1
StrCopmare end
SubString start
SubString end
StrCopmare start
Str1 = bc
Str2 = bc
ret = 0
StrCopmare end
FindStrIndex = 5
FindStrIndex end
FindRetPos = 5
MoveBackStr start
TraMvLen = 1
TraStr = a11fc
MoveBackStr end
TraStr1 = a11fc
CopyStrWhithoutTail start
TraStr = a11f1
CopyStrWhithoutTail end
TraStr1 = a11f1
Pos = 6
FindStrIndex start
Invaild parameter!
FindStrIndex = 0
FindStrIndex end
FindRetPos = 0
Str09 = a11f1
StrCopmare start
Str1 = a11f1
Str2 = a11f1
ret = 0
StrCopmare end
StringCompareTest test succeed!
-------Test result----------
Print test result;
TestNum = 9, PassNum = 9, FaildNum = 0
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